UPDATE: Adds web app

.gitignore

@@ -1,2 +1 @@
-target/*
-.DS_Store
+target/*

Cargo.lock

@@ -370,6 +370,7 @@ dependencies = [
  "ryu",
  "serde",
  "serde_json",
+ "serde_repr",
 ]
 
 [[package]]
@@ -678,6 +679,17 @@ dependencies = [
  "serde",
 ]
 
+[[package]]
+name = "serde_repr"
+version = "0.1.18"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "0b2e6b945e9d3df726b65d6ee24060aff8e3533d431f677a9695db04eff9dfdb"
+dependencies = [
+ "proc-macro2",
+ "quote",
+ "syn",
+]
+
 [[package]]
 name = "sha1"
 version = "0.10.6"

Makefile

@@ -1,6 +1,13 @@
+all:
+	cargo build --release
+	cd bindings/wasm/ && make
+	cd webapp && npm install && npm run build
+
 lint:
 	cargo fmt -- --check
-	cargo clippy --all-targets --all-features
+	# TODO: See issue #33
+	# cargo clippy --all-targets --all-features -- -D warnings -D clippy::expect_used -D clippy::unwrap_used -D clippy::panic
+	cargo clippy --all-targets --all-features -- -D warnings
 
 format:
 	cargo fmt
@@ -10,7 +17,7 @@ tests: lint
 	./target/debug/documentation
 	cmp functions.md wiki/functions.md || exit 1
 	make remove-artifacts
-	cd bindings/wasm/ && wasm-pack build --target nodejs && node tests/test.mjs
+	cd bindings/wasm/ && make tests
 
 remove-artifacts:
 	rm -f xlsx/hello-calc.xlsx
@@ -25,6 +32,7 @@ clean: remove-artifacts
 	rm -f cargo-test-*
 	rm -f base/cargo-test-*
 	rm -f xlsx/cargo-test-*
+	rm -r -f webapp/node_modules
 
 
 coverage:

assets/icon/ironcalc_icon.svg

@@ -1,8 +0,0 @@
-<svg width="600" height="600" viewBox="0 0 600 600" fill="none" xmlns="http://www.w3.org/2000/svg">
-<rect width="600" height="600" rx="20" fill="#F2994A"/>
-<path opacity="0.8" fill-rule="evenodd" clip-rule="evenodd" d="M348.98 100C348.98 166.034 322.748 229.362 276.055 276.055C268.163 283.947 259.796 291.255 251.021 297.95L251.021 500L348.98 500H251.021C251.021 433.966 277.252 370.637 323.945 323.945C331.837 316.053 340.204 308.745 348.98 302.05L348.98 100Z" fill="white"/>
-<path opacity="0.8" fill-rule="evenodd" clip-rule="evenodd" d="M251.021 100.068C251.003 140.096 235.094 178.481 206.788 206.787C178.466 235.109 140.053 251.02 100 251.02V348.979C154.873 348.979 207.877 330.866 251.021 297.95V100.068Z" fill="white"/>
-<path opacity="0.8" fill-rule="evenodd" clip-rule="evenodd" d="M348.98 499.882C349.011 459.872 364.918 421.507 393.213 393.213C421.534 364.891 459.947 348.98 500 348.98V251.02C445.128 251.02 392.123 269.134 348.98 302.05V499.882Z" fill="white"/>
-<path fill-rule="evenodd" clip-rule="evenodd" d="M276.055 276.055C322.748 229.362 348.98 166.034 348.98 100H251.021V297.95C259.796 291.255 268.163 283.947 276.055 276.055Z" fill="white"/>
-<path fill-rule="evenodd" clip-rule="evenodd" d="M348.98 302.05V499.895C348.98 499.93 348.98 499.965 348.98 500L251.021 500C251.021 499.946 251.02 499.891 251.021 499.837C251.064 433.862 277.291 370.599 323.945 323.945C331.837 316.053 340.204 308.745 348.98 302.05Z" fill="white"/>
-</svg>

base/Cargo.toml

@@ -12,6 +12,8 @@ readme = "README.md"
 
 [dependencies]
 serde = { version = "1.0", features = ["derive"] }
+serde_json = "1.0"
+serde_repr = "0.1"
 ryu = "1.0"
 chrono = "0.4"
 chrono-tz = "0.9"
@@ -19,9 +21,6 @@ regex = "1.0"
 once_cell = "1.16.0"
 bitcode = "0.6.0"
 
-[dev-dependencies]
-serde_json = "1.0"
-
 [target.'cfg(target_arch = "wasm32")'.dependencies]
 js-sys = { version = "0.3.69" }
 

base/src/cell.rs

@@ -1,9 +1,12 @@
 use crate::{
     expressions::token::Error, language::Language, number_format::to_excel_precision_str, types::*,
 };
+use serde::{Deserialize, Serialize};
+use serde_json::json;
 
 /// A CellValue is the representation of the cell content.
-#[derive(Debug, PartialEq)]
+#[derive(Serialize, Deserialize, Debug, PartialEq)]
+#[serde(untagged)]
 pub enum CellValue {
     None,
     String(String),
@@ -11,6 +14,17 @@ pub enum CellValue {
     Boolean(bool),
 }
 
+impl CellValue {
+    pub fn to_json_str(&self) -> String {
+        match &self {
+            CellValue::None => "null".to_string(),
+            CellValue::String(s) => json!(s).to_string(),
+            CellValue::Number(f) => json!(f).to_string(),
+            CellValue::Boolean(b) => json!(b).to_string(),
+        }
+    }
+}
+
 impl From<f64> for CellValue {
     fn from(value: f64) -> Self {
         Self::Number(value)

base/src/expressions/parser/mod.rs

@@ -222,7 +222,7 @@ impl Parser {
 
     pub fn parse(&mut self, formula: &str, context: &Option<CellReferenceRC>) -> Node {
         self.lexer.set_formula(formula);
-        self.context.clone_from(context);
+        self.context = context.clone();
         self.parse_expr()
     }
 

base/src/expressions/token.rs

@@ -2,6 +2,7 @@ use std::fmt;
 
 use bitcode::{Decode, Encode};
 use serde::{Deserialize, Serialize};
+use serde_repr::{Deserialize_repr, Serialize_repr};
 
 use crate::language::Language;
 
@@ -80,7 +81,8 @@ impl fmt::Display for OpProduct {
 ///  * "#ERROR!" means there was an error processing the formula (for instance "=A1+")
 ///  * "#N/IMPL!" means the formula or feature in Excel but has not been implemented in IronCalc
 /// Note that they are serialized/deserialized by index
-#[derive(Serialize, Deserialize, Encode, Decode, Debug, PartialEq, Eq, Clone)]
+#[derive(Serialize_repr, Deserialize_repr, Encode, Decode, Debug, PartialEq, Eq, Clone)]
+#[repr(u8)]
 pub enum Error {
     REF,
     NAME,

base/src/language/language.bin

@@ -1 +0,0 @@
-PfrendeesD<>VRAITRUEWAHRVERDADEROTVFAUXFALSEFALSCHFALSOUw#REF!#REF!#BEZUG!#¡REF!e<>#NOM?#NAME?#NAME?#¿NOMBRE?x<>#VALEUR!#VALUE!#WERT!#¡VALOR!w<>#DIV/0!#DIV/0!#DIV/0!#¡DIV/0!<04>#N/A#N/A#NV#N/AXv#NOMBRE!#NUM!#ZAHL!#¡NUM!<02><>#N/IMPL!#N/IMPL!#N/IMPL!#N/IMPL!w{#SPILL!#SPILL!#ÜBERLAUF!#SPILL!ff#CALC!#CALC!#CALC!#CALC!ff#CIRC!#CIRC!#CIRC!#CIRC!ww#ERROR!#ERROR!#ERROR!#ERROR!ff#NULL!#NULL!#NULL!#NULL!

base/src/language/mod.rs

@@ -1,15 +1,15 @@
+use once_cell::sync::Lazy;
+use serde::{Deserialize, Serialize};
+
 use std::collections::HashMap;
 
-use bitcode::{Decode, Encode};
-use once_cell::sync::Lazy;
-
-#[derive(Encode, Decode, Clone)]
+#[derive(Serialize, Deserialize, Clone)]
 pub struct Booleans {
     pub r#true: String,
     pub r#false: String,
 }
 
-#[derive(Encode, Decode, Clone)]
+#[derive(Serialize, Deserialize, Clone)]
 pub struct Errors {
     pub r#ref: String,
     pub name: String,
@@ -25,14 +25,14 @@ pub struct Errors {
     pub null: String,
 }
 
-#[derive(Encode, Decode, Clone)]
+#[derive(Serialize, Deserialize, Clone)]
 pub struct Language {
     pub booleans: Booleans,
     pub errors: Errors,
 }
 
 static LANGUAGES: Lazy<HashMap<String, Language>> = Lazy::new(|| {
-    bitcode::decode(include_bytes!("language.bin")).expect("Failed parsing language file")
+    serde_json::from_str(include_str!("language.json")).expect("Failed parsing language file")
 });
 
 pub fn get_language(id: &str) -> Result<&Language, String> {

base/src/locale/mod.rs

@@ -1,29 +1,32 @@
-use bitcode::{Decode, Encode};
 use once_cell::sync::Lazy;
+use serde::{Deserialize, Serialize};
 
 use std::collections::HashMap;
 
-#[derive(Encode, Decode, Clone)]
+#[derive(Serialize, Deserialize, Clone)]
 pub struct Locale {
     pub dates: Dates,
     pub numbers: NumbersProperties,
     pub currency: Currency,
 }
 
-#[derive(Encode, Decode, Clone)]
+#[derive(Serialize, Deserialize, Clone)]
 pub struct Currency {
     pub iso: String,
     pub symbol: String,
 }
 
-#[derive(Encode, Decode, Clone)]
+#[derive(Serialize, Deserialize, Clone)]
 pub struct NumbersProperties {
+    #[serde(rename = "symbols-numberSystem-latn")]
     pub symbols: NumbersSymbols,
+    #[serde(rename = "decimalFormats-numberSystem-latn")]
     pub decimal_formats: DecimalFormats,
+    #[serde(rename = "currencyFormats-numberSystem-latn")]
     pub currency_formats: CurrencyFormats,
 }
 
-#[derive(Encode, Decode, Clone)]
+#[derive(Serialize, Deserialize, Clone)]
 pub struct Dates {
     pub day_names: Vec<String>,
     pub day_names_short: Vec<String>,
@@ -32,7 +35,8 @@ pub struct Dates {
     pub months_letter: Vec<String>,
 }
 
-#[derive(Encode, Decode, Clone)]
+#[derive(Serialize, Deserialize, Clone)]
+#[serde(rename_all = "camelCase")]
 pub struct NumbersSymbols {
     pub decimal: String,
     pub group: String,
@@ -50,23 +54,31 @@ pub struct NumbersSymbols {
 }
 
 // See: https://cldr.unicode.org/translation/number-currency-formats/number-and-currency-patterns
-#[derive(Encode, Decode, Clone)]
+#[derive(Serialize, Deserialize, Clone)]
 pub struct CurrencyFormats {
     pub standard: String,
+    #[serde(rename = "standard-alphaNextToNumber")]
+    #[serde(skip_serializing_if = "Option::is_none")]
     pub standard_alpha_next_to_number: Option<String>,
+    #[serde(rename = "standard-noCurrency")]
     pub standard_no_currency: String,
     pub accounting: String,
+    #[serde(rename = "accounting-alphaNextToNumber")]
+    #[serde(skip_serializing_if = "Option::is_none")]
     pub accounting_alpha_next_to_number: Option<String>,
+    #[serde(rename = "accounting-noCurrency")]
     pub accounting_no_currency: String,
 }
 
-#[derive(Encode, Decode, Clone)]
+#[derive(Serialize, Deserialize, Clone)]
+#[serde(rename_all = "camelCase")]
 pub struct DecimalFormats {
     pub standard: String,
 }
 
-static LOCALES: Lazy<HashMap<String, Locale>> =
-    Lazy::new(|| bitcode::decode(include_bytes!("locales.bin")).expect("Failed parsing locale"));
+static LOCALES: Lazy<HashMap<String, Locale>> = Lazy::new(|| {
+    serde_json::from_str(include_str!("locales.json")).expect("Failed parsing locale")
+});
 
 pub fn get_locale(id: &str) -> Result<&Locale, String> {
     // TODO: pass the locale once we implement locales in Rust

base/src/model.rs

@@ -118,8 +118,6 @@ pub struct Model {
     pub(crate) language: Language,
     /// The timezone used to evaluate the model
     pub(crate) tz: Tz,
-    /// The view id. A view consist of a selected sheet and ranges.
-    pub(crate) view_id: u32,
 }
 
 // FIXME: Maybe this should be the same as CellReference
@@ -888,7 +886,6 @@ impl Model {
             language,
             locale,
             tz,
-            view_id: 0,
         };
 
         model.parse_formulas();

base/src/new_empty.rs

@@ -6,18 +6,14 @@ use crate::{
     calc_result::Range,
     expressions::{
         lexer::LexerMode,
-        parser::{
-            stringify::{rename_sheet_in_node, to_rc_format},
-            Parser,
-        },
+        parser::stringify::{rename_sheet_in_node, to_rc_format},
+        parser::Parser,
         types::CellReferenceRC,
     },
     language::get_language,
     locale::get_locale,
     model::{get_milliseconds_since_epoch, Model, ParsedDefinedName},
-    types::{
-        Metadata, SheetState, Workbook, WorkbookSettings, WorkbookView, Worksheet, WorksheetView,
-    },
+    types::{Metadata, SheetState, Workbook, WorkbookSettings, Worksheet},
     utils::ParsedReference,
 };
 
@@ -37,20 +33,7 @@ fn is_valid_sheet_name(name: &str) -> bool {
 
 impl Model {
     /// Creates a new worksheet. Note that it does not check if the name or the sheet_id exists
-    fn new_empty_worksheet(name: &str, sheet_id: u32, view_ids: &[&u32]) -> Worksheet {
-        let mut views = HashMap::new();
-        for id in view_ids {
-            views.insert(
-                **id,
-                WorksheetView {
-                    row: 1,
-                    column: 1,
-                    range: [1, 1, 1, 1],
-                    top_row: 1,
-                    left_column: 1,
-                },
-            );
-        }
+    fn new_empty_worksheet(name: &str, sheet_id: u32) -> Worksheet {
         Worksheet {
             cols: vec![],
             rows: vec![],
@@ -65,7 +48,6 @@ impl Model {
             color: Default::default(),
             frozen_columns: 0,
             frozen_rows: 0,
-            views,
         }
     }
 
@@ -140,7 +122,7 @@ impl Model {
         self.parsed_defined_names = parsed_defined_names;
     }
 
-    /// Reparses all formulas and defined names
+    // Reparses all formulas and defined names
     pub(crate) fn reset_parsed_structures(&mut self) {
         self.parser
             .set_worksheets(self.workbook.get_worksheet_names());
@@ -171,8 +153,7 @@ impl Model {
         let sheet_name = format!("{}{}", base_name, index);
         // Now we need a sheet_id
         let sheet_id = self.get_new_sheet_id();
-        let view_ids: Vec<&u32> = self.workbook.views.keys().collect();
-        let worksheet = Model::new_empty_worksheet(&sheet_name, sheet_id, &view_ids);
+        let worksheet = Model::new_empty_worksheet(&sheet_name, sheet_id);
         self.workbook.worksheets.push(worksheet);
         self.reset_parsed_structures();
         (sheet_name, self.workbook.worksheets.len() as u32 - 1)
@@ -203,8 +184,7 @@ impl Model {
             Some(id) => id,
             None => self.get_new_sheet_id(),
         };
-        let view_ids: Vec<&u32> = self.workbook.views.keys().collect();
-        let worksheet = Model::new_empty_worksheet(sheet_name, sheet_id, &view_ids);
+        let worksheet = Model::new_empty_worksheet(sheet_name, sheet_id);
         if sheet_index as usize > self.workbook.worksheets.len() {
             return Err("Sheet index out of range".to_string());
         }
@@ -351,14 +331,11 @@ impl Model {
         // "2020-08-06T21:20:53Z
         let now = dt.format("%Y-%m-%dT%H:%M:%SZ").to_string();
 
-        let mut views = HashMap::new();
-        views.insert(0, WorkbookView { sheet: 0 });
-
         // String versions of the locale are added here to simplify the serialize/deserialize logic
         let workbook = Workbook {
             shared_strings: vec![],
             defined_names: vec![],
-            worksheets: vec![Model::new_empty_worksheet("Sheet1", 1, &[&0])],
+            worksheets: vec![Model::new_empty_worksheet("Sheet1", 1)],
             styles: Default::default(),
             name: name.to_string(),
             settings: WorkbookSettings {
@@ -374,7 +351,6 @@ impl Model {
                 last_modified: now,
             },
             tables: HashMap::new(),
-            views,
         };
         let parsed_formulas = Vec::new();
         let worksheets = &workbook.worksheets;
@@ -395,7 +371,6 @@ impl Model {
             locale,
             language,
             tz,
-            view_id: 0,
         };
         model.parse_formulas();
         Ok(model)

base/src/test/engineering/test_complex.rs

@@ -76,16 +76,10 @@ fn fn_imconjugate() {
 fn fn_imcos() {
     let mut model = new_empty_model();
     model._set("A1", r#"=IMCOS("4+3i")"#);
-    // In macos non intel this is "-6.58066304055116+7.58155274274655i"
-    model._set("A2", r#"=COMPLEX(-6.58066304055116, 7.58155274274654)"#);
-    model._set("A3", r#"=IMABS(IMSUB(A1, A2)) < G1"#);
-
-    // small number
-    model._set("G1", "0.0000001");
 
     model.evaluate();
 
-    assert_eq!(model._get_text("A3"), "TRUE");
+    assert_eq!(model._get_text("A1"), "-6.58066304055116+7.58155274274654i");
 }
 
 #[test]

base/src/test/mod.rs

@@ -53,5 +53,4 @@ mod test_frozen_rows_and_columns;
 mod test_get_cell_content;
 mod test_percentage;
 mod test_today;
-mod test_types;
 mod user_model;

base/src/test/test_types.rs

@@ -1,24 +0,0 @@
-#![allow(clippy::unwrap_used)]
-
-use crate::types::{Alignment, HorizontalAlignment, VerticalAlignment};
-
-#[test]
-fn alignment_default() {
-    let alignment = Alignment::default();
-    assert_eq!(
-        alignment,
-        Alignment {
-            horizontal: HorizontalAlignment::General,
-            vertical: VerticalAlignment::Bottom,
-            wrap_text: false
-        }
-    );
-
-    let s = serde_json::to_string(&alignment).unwrap();
-    // defaults stringifies as an empty object
-    assert_eq!(s, "{}");
-
-    let a: Alignment = serde_json::from_str("{}").unwrap();
-
-    assert_eq!(a, alignment)
-}

base/src/test/user_model/mod.rs

@@ -8,4 +8,3 @@ mod test_row_column;
 mod test_styles;
 mod test_to_from_bytes;
 mod test_undo_redo;
-mod test_view;

base/src/test/user_model/test_styles.rs

@@ -144,18 +144,13 @@ fn basic_fill() {
 
     let style = model.get_cell_style(0, 1, 1).unwrap();
     assert_eq!(style.fill.bg_color, None);
-    assert_eq!(style.fill.fg_color, None);
 
     // bg_color
     model
         .update_range_style(&range, "fill.bg_color", "#F2F2F2")
         .unwrap();
-    model
-        .update_range_style(&range, "fill.fg_color", "#F3F4F5")
-        .unwrap();
     let style = model.get_cell_style(0, 1, 1).unwrap();
     assert_eq!(style.fill.bg_color, Some("#F2F2F2".to_owned()));
-    assert_eq!(style.fill.fg_color, Some("#F3F4F5".to_owned()));
 
     let send_queue = model.flush_send_queue();
 
@@ -164,7 +159,6 @@ fn basic_fill() {
 
     let style = model2.get_cell_style(0, 1, 1).unwrap();
     assert_eq!(style.fill.bg_color, Some("#F2F2F2".to_owned()));
-    assert_eq!(style.fill.fg_color, Some("#F3F4F5".to_owned()));
 }
 
 #[test]
@@ -177,15 +171,9 @@ fn fill_errors() {
         width: 1,
         height: 1,
     };
-    assert_eq!(
-        model.update_range_style(&range, "fill.bg_color", "#FFF"),
-        Err("Invalid color: '#FFF'.".to_string())
-    );
-
-    assert_eq!(
-        model.update_range_style(&range, "fill.fg_color", "#FFF"),
-        Err("Invalid color: '#FFF'.".to_string())
-    );
+    assert!(model
+        .update_range_style(&range, "fill.bg_color", "#FFF")
+        .is_err());
 }
 
 #[test]

base/src/test/user_model/test_view.rs

@@ -1,216 +0,0 @@
-#![allow(clippy::unwrap_used)]
-
-use std::collections::HashMap;
-
-use crate::{
-    constants::{LAST_COLUMN, LAST_ROW},
-    test::util::new_empty_model,
-    user_model::SelectedView,
-    UserModel,
-};
-
-#[test]
-fn initial_view() {
-    let model = new_empty_model();
-    let model = UserModel::from_model(model);
-    assert_eq!(model.get_selected_sheet(), 0);
-    assert_eq!(model.get_selected_cell(), (0, 1, 1));
-    assert_eq!(
-        model.get_selected_view(),
-        SelectedView {
-            sheet: 0,
-            row: 1,
-            column: 1,
-            range: [1, 1, 1, 1],
-            top_row: 1,
-            left_column: 1
-        }
-    );
-}
-
-#[test]
-fn set_the_cell_sets_the_range() {
-    let model = new_empty_model();
-    let mut model = UserModel::from_model(model);
-    model.set_selected_cell(5, 4).unwrap();
-    assert_eq!(model.get_selected_sheet(), 0);
-    assert_eq!(model.get_selected_cell(), (0, 5, 4));
-    assert_eq!(
-        model.get_selected_view(),
-        SelectedView {
-            sheet: 0,
-            row: 5,
-            column: 4,
-            range: [5, 4, 5, 4],
-            top_row: 1,
-            left_column: 1
-        }
-    );
-}
-
-#[test]
-fn set_the_range_does_not_set_the_cell() {
-    let model = new_empty_model();
-    let mut model = UserModel::from_model(model);
-    model.set_selected_range(5, 4, 10, 6).unwrap();
-    assert_eq!(model.get_selected_sheet(), 0);
-    assert_eq!(model.get_selected_cell(), (0, 1, 1));
-    assert_eq!(
-        model.get_selected_view(),
-        SelectedView {
-            sheet: 0,
-            row: 1,
-            column: 1,
-            range: [5, 4, 10, 6],
-            top_row: 1,
-            left_column: 1
-        }
-    );
-}
-
-#[test]
-fn add_new_sheet_and_back() {
-    let model = new_empty_model();
-    let mut model = UserModel::from_model(model);
-    model.new_sheet();
-    assert_eq!(model.get_selected_sheet(), 0);
-    model.set_selected_cell(5, 4).unwrap();
-    model.set_selected_sheet(1).unwrap();
-    assert_eq!(model.get_selected_cell(), (1, 1, 1));
-    model.set_selected_sheet(0).unwrap();
-    assert_eq!(model.get_selected_cell(), (0, 5, 4));
-}
-
-#[test]
-fn set_selected_cell_errors() {
-    let model = new_empty_model();
-    let mut model = UserModel::from_model(model);
-    assert_eq!(
-        model.set_selected_cell(-5, 4),
-        Err("Invalid row: '-5'".to_string())
-    );
-    assert_eq!(
-        model.set_selected_cell(5, -4),
-        Err("Invalid column: '-4'".to_string())
-    );
-    assert_eq!(
-        model.set_selected_range(-1, 1, 1, 1),
-        Err("Invalid row: '-1'".to_string())
-    );
-    assert_eq!(
-        model.set_selected_range(1, 0, 1, 1),
-        Err("Invalid column: '0'".to_string())
-    );
-    assert_eq!(
-        model.set_selected_range(1, 1, LAST_ROW + 1, 1),
-        Err("Invalid row: '1048577'".to_string())
-    );
-    assert_eq!(
-        model.set_selected_range(1, 1, 1, LAST_COLUMN + 1),
-        Err("Invalid column: '16385'".to_string())
-    );
-}
-
-#[test]
-fn set_selected_cell_errors_wrong_sheet() {
-    let mut model = new_empty_model();
-    // forcefully set a wrong index
-    model.workbook.views.get_mut(&0).unwrap().sheet = 2;
-    let mut model = UserModel::from_model(model);
-    // It's returning the wrong number
-    assert_eq!(model.get_selected_sheet(), 2);
-
-    // But we can't set the selected cell anymore
-    assert_eq!(
-        model.set_selected_cell(3, 4),
-        Err("Invalid worksheet index 2".to_string())
-    );
-    assert_eq!(
-        model.set_selected_range(3, 4, 5, 6),
-        Err("Invalid worksheet index 2".to_string())
-    );
-
-    assert_eq!(
-        model.set_top_left_visible_cell(3, 4),
-        Err("Invalid worksheet index 2".to_string())
-    );
-
-    // we can fix it by setting the right cell
-    model.set_selected_sheet(0).unwrap();
-    model.set_selected_cell(3, 4).unwrap();
-}
-
-#[test]
-fn set_visible_cell() {
-    let model = new_empty_model();
-    let mut model = UserModel::from_model(model);
-    model.set_top_left_visible_cell(100, 12).unwrap();
-
-    assert_eq!(
-        model.get_selected_view(),
-        SelectedView {
-            sheet: 0,
-            row: 1,
-            column: 1,
-            range: [1, 1, 1, 1],
-            top_row: 100,
-            left_column: 12
-        }
-    );
-
-    let s = serde_json::to_string(&model.get_selected_view()).unwrap();
-    assert_eq!(
-        serde_json::from_str::<SelectedView>(&s).unwrap(),
-        SelectedView {
-            sheet: 0,
-            row: 1,
-            column: 1,
-            range: [1, 1, 1, 1],
-            top_row: 100,
-            left_column: 12
-        }
-    );
-}
-
-#[test]
-fn set_visible_cell_errors() {
-    let model = new_empty_model();
-    let mut model = UserModel::from_model(model);
-    assert_eq!(
-        model.set_top_left_visible_cell(-100, 12),
-        Err("Invalid row: '-100'".to_string())
-    );
-    assert_eq!(
-        model.set_top_left_visible_cell(100, -12),
-        Err("Invalid column: '-12'".to_string())
-    );
-}
-
-#[test]
-fn errors_no_views() {
-    let mut model = new_empty_model();
-    // forcefully remove the view
-    model.workbook.views = HashMap::new();
-    // also in the sheet
-    model.workbook.worksheets[0].views = HashMap::new();
-    let mut model = UserModel::from_model(model);
-    // get methods will return defaults
-    assert_eq!(model.get_selected_sheet(), 0);
-    assert_eq!(model.get_selected_cell(), (0, 1, 1));
-    assert_eq!(
-        model.get_selected_view(),
-        SelectedView {
-            sheet: 0,
-            row: 1,
-            column: 1,
-            range: [1, 1, 1, 1],
-            top_row: 1,
-            left_column: 1
-        }
-    );
-
-    // set methods won't complain. but won't work either
-    model.set_selected_sheet(0).unwrap();
-    model.set_selected_cell(5, 6).unwrap();
-    assert_eq!(model.get_selected_cell(), (0, 1, 1));
-}

base/src/types.rs

@@ -4,15 +4,37 @@ use std::{collections::HashMap, fmt::Display};
 
 use crate::expressions::token::Error;
 
+// Useful for `#[serde(default = "default_as_true")]`
+fn default_as_true() -> bool {
+    true
+}
+
 fn default_as_false() -> bool {
     false
 }
 
+// Useful for `#[serde(skip_serializing_if = "is_true")]`
+fn is_true(b: &bool) -> bool {
+    *b
+}
+
 fn is_false(b: &bool) -> bool {
     !*b
 }
 
-#[derive(Encode, Decode, Debug, PartialEq, Eq, Clone)]
+fn is_zero(num: &i32) -> bool {
+    *num == 0
+}
+
+fn is_default_alignment(o: &Option<Alignment>) -> bool {
+    o.is_none() || *o == Some(Alignment::default())
+}
+
+fn hashmap_is_empty(h: &HashMap<String, Table>) -> bool {
+    h.values().len() == 0
+}
+
+#[derive(Serialize, Deserialize, Encode, Decode, Debug, PartialEq, Eq, Clone)]
 pub struct Metadata {
     pub application: String,
     pub app_version: String,
@@ -22,21 +44,14 @@ pub struct Metadata {
     pub last_modified: String, //"2020-11-20T16:24:35"
 }
 
-#[derive(Encode, Decode, Debug, PartialEq, Eq, Clone)]
+#[derive(Serialize, Deserialize, Encode, Decode, Debug, PartialEq, Eq, Clone)]
 pub struct WorkbookSettings {
     pub tz: String,
     pub locale: String,
 }
-
-/// A Workbook View tracks of the selected sheet for each view
-#[derive(Encode, Decode, Debug, PartialEq, Clone)]
-pub struct WorkbookView {
-    /// The index of the currently selected sheet.
-    pub sheet: u32,
-}
-
 /// An internal representation of an IronCalc Workbook
-#[derive(Encode, Decode, Debug, PartialEq, Clone)]
+#[derive(Serialize, Deserialize, Encode, Decode, Debug, PartialEq, Clone)]
+#[serde(deny_unknown_fields)]
 pub struct Workbook {
     pub shared_strings: Vec<String>,
     pub defined_names: Vec<DefinedName>,
@@ -45,22 +60,28 @@ pub struct Workbook {
     pub name: String,
     pub settings: WorkbookSettings,
     pub metadata: Metadata,
+    #[serde(default)]
+    #[serde(skip_serializing_if = "hashmap_is_empty")]
     pub tables: HashMap<String, Table>,
-    pub views: HashMap<u32, WorkbookView>,
 }
 
 /// A defined name. The `sheet_id` is the sheet index in case the name is local
-#[derive(Encode, Decode, Debug, PartialEq, Eq, Clone)]
+#[derive(Serialize, Deserialize, Encode, Decode, Debug, PartialEq, Eq, Clone)]
 pub struct DefinedName {
     pub name: String,
     pub formula: String,
+    #[serde(skip_serializing_if = "Option::is_none")]
     pub sheet_id: Option<u32>,
 }
 
+// TODO: Move to worksheet.rs make frozen_rows/columns private and u32
+/// Internal representation of a worksheet Excel object
+
 /// * state:
 ///    18.18.68 ST_SheetState (Sheet Visibility Types)
 ///    hidden, veryHidden, visible
-#[derive(Encode, Decode, Debug, PartialEq, Eq, Clone)]
+#[derive(Serialize, Deserialize, Encode, Decode, Debug, PartialEq, Eq, Clone)]
+#[serde(rename_all = "lowercase")]
 pub enum SheetState {
     Visible,
     Hidden,
@@ -77,25 +98,8 @@ impl Display for SheetState {
     }
 }
 
-/// Represents the state of the worksheet as seen by the user. This includes
-/// details such as the currently selected cell, the visible range, and the
-/// position of the viewport.
-#[derive(Encode, Decode, Debug, PartialEq, Clone)]
-pub struct WorksheetView {
-    /// The row index of the currently selected cell.
-    pub row: i32,
-    /// The column index of the currently selected cell.
-    pub column: i32,
-    /// The selected range in the worksheet, specified as [start_row, start_column, end_row, end_column].
-    pub range: [i32; 4],
-    /// The row index of the topmost visible cell in the worksheet view.
-    pub top_row: i32,
-    /// The column index of the leftmost visible cell in the worksheet view.
-    pub left_column: i32,
-}
-
 /// Internal representation of a worksheet Excel object
-#[derive(Encode, Decode, Debug, PartialEq, Clone)]
+#[derive(Serialize, Deserialize, Encode, Decode, Debug, PartialEq, Clone)]
 pub struct Worksheet {
     pub dimension: String,
     pub cols: Vec<Col>,
@@ -105,12 +109,16 @@ pub struct Worksheet {
     pub shared_formulas: Vec<String>,
     pub sheet_id: u32,
     pub state: SheetState,
+    #[serde(skip_serializing_if = "Option::is_none")]
     pub color: Option<String>,
     pub merge_cells: Vec<String>,
     pub comments: Vec<Comment>,
+    #[serde(default)]
+    #[serde(skip_serializing_if = "is_zero")]
     pub frozen_rows: i32,
+    #[serde(default)]
+    #[serde(skip_serializing_if = "is_zero")]
     pub frozen_columns: i32,
-    pub views: HashMap<u32, WorksheetView>,
 }
 
 /// Internal representation of Excel's sheet_data
@@ -118,7 +126,7 @@ pub struct Worksheet {
 pub type SheetData = HashMap<i32, HashMap<i32, Cell>>;
 
 // ECMA-376-1:2016 section 18.3.1.73
-#[derive(Encode, Decode, Debug, PartialEq, Clone)]
+#[derive(Serialize, Deserialize, Encode, Decode, Debug, PartialEq, Clone)]
 pub struct Row {
     /// Row index
     pub r: i32,
@@ -126,19 +134,23 @@ pub struct Row {
     pub custom_format: bool,
     pub custom_height: bool,
     pub s: i32,
+    #[serde(default = "default_as_false")]
+    #[serde(skip_serializing_if = "is_false")]
     pub hidden: bool,
 }
 
 // ECMA-376-1:2016 section 18.3.1.13
-#[derive(Encode, Decode, Debug, PartialEq, Clone)]
+#[derive(Serialize, Deserialize, Encode, Decode, Debug, PartialEq, Clone)]
 pub struct Col {
     // Column definitions are defined on ranges, unlike rows which store unique, per-row entries.
     /// First column affected by this record. Settings apply to column in \[min, max\] range.
     pub min: i32,
     /// Last column affected by this record. Settings apply to column in \[min, max\] range.
     pub max: i32,
+
     pub width: f64,
     pub custom_width: bool,
+    #[serde(skip_serializing_if = "Option::is_none")]
     pub style: Option<i32>,
 }
 
@@ -153,55 +165,32 @@ pub enum CellType {
     CompoundData = 128,
 }
 
-#[derive(Encode, Decode, Debug, Clone, PartialEq)]
+#[derive(Serialize, Deserialize, Encode, Decode, Debug, Clone, PartialEq)]
+#[serde(tag = "t", deny_unknown_fields)]
 pub enum Cell {
-    EmptyCell {
-        s: i32,
-    },
-
-    BooleanCell {
-        v: bool,
-        s: i32,
-    },
-
-    NumberCell {
-        v: f64,
-        s: i32,
-    },
+    #[serde(rename = "empty")]
+    EmptyCell { s: i32 },
+    #[serde(rename = "b")]
+    BooleanCell { v: bool, s: i32 },
+    #[serde(rename = "n")]
+    NumberCell { v: f64, s: i32 },
     // Maybe we should not have this type. In Excel this is just a string
-    ErrorCell {
-        ei: Error,
-        s: i32,
-    },
+    #[serde(rename = "e")]
+    ErrorCell { ei: Error, s: i32 },
     // Always a shared string
-    SharedString {
-        si: i32,
-        s: i32,
-    },
+    #[serde(rename = "s")]
+    SharedString { si: i32, s: i32 },
     // Non evaluated Formula
-    CellFormula {
-        f: i32,
-        s: i32,
-    },
-
-    CellFormulaBoolean {
-        f: i32,
-        v: bool,
-        s: i32,
-    },
-
-    CellFormulaNumber {
-        f: i32,
-        v: f64,
-        s: i32,
-    },
+    #[serde(rename = "u")]
+    CellFormula { f: i32, s: i32 },
+    #[serde(rename = "fb")]
+    CellFormulaBoolean { f: i32, v: bool, s: i32 },
+    #[serde(rename = "fn")]
+    CellFormulaNumber { f: i32, v: f64, s: i32 },
     // always inline string
-    CellFormulaString {
-        f: i32,
-        v: String,
-        s: i32,
-    },
-
+    #[serde(rename = "str")]
+    CellFormulaString { f: i32, v: String, s: i32 },
+    #[serde(rename = "fe")]
     CellFormulaError {
         f: i32,
         ei: Error,
@@ -220,16 +209,17 @@ impl Default for Cell {
     }
 }
 
-#[derive(Encode, Decode, Debug, PartialEq, Eq, Clone)]
+#[derive(Serialize, Deserialize, Encode, Decode, Debug, PartialEq, Eq, Clone)]
 pub struct Comment {
     pub text: String,
     pub author_name: String,
+    #[serde(skip_serializing_if = "Option::is_none")]
     pub author_id: Option<String>,
     pub cell_ref: String,
 }
 
 // ECMA-376-1:2016 section 18.5.1.2
-#[derive(Encode, Decode, Debug, PartialEq, Eq, Clone)]
+#[derive(Serialize, Deserialize, Encode, Decode, Debug, PartialEq, Eq, Clone)]
 pub struct Table {
     pub name: String,
     pub display_name: String,
@@ -237,24 +227,34 @@ pub struct Table {
     pub reference: String,
     pub totals_row_count: u32,
     pub header_row_count: u32,
+    #[serde(skip_serializing_if = "Option::is_none")]
     pub header_row_dxf_id: Option<u32>,
+    #[serde(skip_serializing_if = "Option::is_none")]
     pub data_dxf_id: Option<u32>,
+    #[serde(skip_serializing_if = "Option::is_none")]
     pub totals_row_dxf_id: Option<u32>,
     pub columns: Vec<TableColumn>,
     pub style_info: TableStyleInfo,
+    #[serde(default = "default_as_false")]
+    #[serde(skip_serializing_if = "is_false")]
     pub has_filters: bool,
 }
 
 // totals_row_label vs totals_row_function might be mutually exclusive. Use an enum?
 // the totals_row_function is an enum not String methinks
-#[derive(Encode, Decode, Debug, PartialEq, Eq, Clone)]
+#[derive(Serialize, Deserialize, Encode, Decode, Debug, PartialEq, Eq, Clone)]
 pub struct TableColumn {
     pub id: u32,
     pub name: String,
+    #[serde(skip_serializing_if = "Option::is_none")]
     pub totals_row_label: Option<String>,
+    #[serde(skip_serializing_if = "Option::is_none")]
     pub header_row_dxf_id: Option<u32>,
+    #[serde(skip_serializing_if = "Option::is_none")]
     pub data_dxf_id: Option<u32>,
+    #[serde(skip_serializing_if = "Option::is_none")]
     pub totals_row_dxf_id: Option<u32>,
+    #[serde(skip_serializing_if = "Option::is_none")]
     pub totals_row_function: Option<String>,
 }
 
@@ -272,16 +272,25 @@ impl Default for TableColumn {
     }
 }
 
-#[derive(Encode, Decode, Debug, PartialEq, Eq, Clone, Default)]
+#[derive(Serialize, Deserialize, Encode, Decode, Debug, PartialEq, Eq, Clone, Default)]
 pub struct TableStyleInfo {
+    #[serde(skip_serializing_if = "Option::is_none")]
     pub name: Option<String>,
+    #[serde(default = "default_as_false")]
+    #[serde(skip_serializing_if = "is_false")]
     pub show_first_column: bool,
+    #[serde(default = "default_as_false")]
+    #[serde(skip_serializing_if = "is_false")]
     pub show_last_column: bool,
+    #[serde(default = "default_as_false")]
+    #[serde(skip_serializing_if = "is_false")]
     pub show_row_stripes: bool,
+    #[serde(default = "default_as_false")]
+    #[serde(skip_serializing_if = "is_false")]
     pub show_column_stripes: bool,
 }
 
-#[derive(Encode, Decode, Debug, PartialEq, Eq, Clone)]
+#[derive(Serialize, Deserialize, Encode, Decode, Debug, PartialEq, Eq, Clone)]
 pub struct Styles {
     pub num_fmts: Vec<NumFmt>,
     pub fonts: Vec<Font>,
@@ -317,7 +326,7 @@ pub struct Style {
     pub quote_prefix: bool,
 }
 
-#[derive(Encode, Decode, Debug, PartialEq, Eq, Clone)]
+#[derive(Serialize, Deserialize, Encode, Decode, Debug, PartialEq, Eq, Clone)]
 pub struct NumFmt {
     pub num_fmt_id: i32,
     pub format_code: String,
@@ -507,17 +516,29 @@ pub struct Alignment {
     pub wrap_text: bool,
 }
 
-#[derive(Encode, Decode, Debug, PartialEq, Eq, Clone)]
+#[derive(Serialize, Deserialize, Encode, Decode, Debug, PartialEq, Eq, Clone)]
 pub struct CellStyleXfs {
     pub num_fmt_id: i32,
     pub font_id: i32,
     pub fill_id: i32,
     pub border_id: i32,
+    #[serde(default = "default_as_true")]
+    #[serde(skip_serializing_if = "is_true")]
     pub apply_number_format: bool,
+    #[serde(default = "default_as_true")]
+    #[serde(skip_serializing_if = "is_true")]
     pub apply_border: bool,
+    #[serde(default = "default_as_true")]
+    #[serde(skip_serializing_if = "is_true")]
     pub apply_alignment: bool,
+    #[serde(default = "default_as_true")]
+    #[serde(skip_serializing_if = "is_true")]
     pub apply_protection: bool,
+    #[serde(default = "default_as_true")]
+    #[serde(skip_serializing_if = "is_true")]
     pub apply_font: bool,
+    #[serde(default = "default_as_true")]
+    #[serde(skip_serializing_if = "is_true")]
     pub apply_fill: bool,
 }
 
@@ -538,24 +559,39 @@ impl Default for CellStyleXfs {
     }
 }
 
-#[derive(Encode, Decode, Debug, PartialEq, Eq, Clone, Default)]
+#[derive(Serialize, Deserialize, Encode, Decode, Debug, PartialEq, Eq, Clone, Default)]
 pub struct CellXfs {
     pub xf_id: i32,
     pub num_fmt_id: i32,
     pub font_id: i32,
     pub fill_id: i32,
     pub border_id: i32,
+    #[serde(default = "default_as_false")]
+    #[serde(skip_serializing_if = "is_false")]
     pub apply_number_format: bool,
+    #[serde(default = "default_as_false")]
+    #[serde(skip_serializing_if = "is_false")]
     pub apply_border: bool,
+    #[serde(default = "default_as_false")]
+    #[serde(skip_serializing_if = "is_false")]
     pub apply_alignment: bool,
+    #[serde(default = "default_as_false")]
+    #[serde(skip_serializing_if = "is_false")]
     pub apply_protection: bool,
+    #[serde(default = "default_as_false")]
+    #[serde(skip_serializing_if = "is_false")]
     pub apply_font: bool,
+    #[serde(default = "default_as_false")]
+    #[serde(skip_serializing_if = "is_false")]
     pub apply_fill: bool,
+    #[serde(default = "default_as_false")]
+    #[serde(skip_serializing_if = "is_false")]
     pub quote_prefix: bool,
+    #[serde(skip_serializing_if = "is_default_alignment")]
     pub alignment: Option<Alignment>,
 }
 
-#[derive(Encode, Decode, Debug, PartialEq, Eq, Clone)]
+#[derive(Serialize, Deserialize, Encode, Decode, Debug, PartialEq, Eq, Clone)]
 pub struct CellStyles {
     pub name: String,
     pub xf_id: i32,

base/src/user_model.rs

@@ -3,7 +3,6 @@
 use std::{collections::HashMap, fmt::Debug};
 
 use bitcode::{Decode, Encode};
-use serde::{Deserialize, Serialize};
 
 use crate::{
     constants,
@@ -19,17 +18,6 @@ use crate::{
     utils::is_valid_hex_color,
 };
 
-#[derive(Serialize, Deserialize)]
-#[cfg_attr(test, derive(PartialEq, Debug))]
-pub struct SelectedView {
-    pub sheet: u32,
-    pub row: i32,
-    pub column: i32,
-    pub range: [i32; 4],
-    pub top_row: i32,
-    pub left_column: i32,
-}
-
 #[derive(Clone, Encode, Decode)]
 struct RowData {
     row: Option<Row>,
@@ -130,7 +118,6 @@ enum Diff {
         old_value: String,
         new_value: String,
     },
-    // FIXME: we are missing SetViewDiffs
 }
 
 type DiffList = Vec<Diff>;
@@ -262,7 +249,7 @@ fn vertical(value: &str) -> Result<VerticalAlignment, String> {
 }
 
 /// # A wrapper around [`Model`] for a spreadsheet end user.
-/// UserModel is a wrapper around Model with undo/redo history, _diffs_, automatic evaluation and view management.
+/// UserModel is a wrapper around Model with undo/redo history, _diffs_ and automatic evaluation.
 ///
 /// A diff in this context (or more correctly a _user diff_) is a change created by a user.
 ///
@@ -862,7 +849,7 @@ impl UserModel {
                         style.fill.fg_color = color(value)?;
                     }
                     "num_fmt" => {
-                        value.clone_into(&mut style.num_fmt);
+                        style.num_fmt = value.to_owned();
                     }
                     "border.left" => {
                         style.border.left = border(value)?;
@@ -948,165 +935,6 @@ impl UserModel {
         self.model.get_worksheets_properties()
     }
 
-    /// Returns the selected sheet index
-    pub fn get_selected_sheet(&self) -> u32 {
-        if let Some(view) = self.model.workbook.views.get(&self.model.view_id) {
-            view.sheet
-        } else {
-            0
-        }
-    }
-
-    /// Returns the selected cell
-    pub fn get_selected_cell(&self) -> (u32, i32, i32) {
-        let sheet = if let Some(view) = self.model.workbook.views.get(&self.model.view_id) {
-            view.sheet
-        } else {
-            0
-        };
-        if let Ok(worksheet) = self.model.workbook.worksheet(sheet) {
-            if let Some(view) = worksheet.views.get(&self.model.view_id) {
-                return (sheet, view.row, view.column);
-            }
-        }
-        // return a safe default
-        (0, 1, 1)
-    }
-
-    /// Returns selected view
-    pub fn get_selected_view(&self) -> SelectedView {
-        let sheet = if let Some(view) = self.model.workbook.views.get(&self.model.view_id) {
-            view.sheet
-        } else {
-            0
-        };
-        if let Ok(worksheet) = self.model.workbook.worksheet(sheet) {
-            if let Some(view) = worksheet.views.get(&self.model.view_id) {
-                return SelectedView {
-                    sheet,
-                    row: view.row,
-                    column: view.column,
-                    range: view.range,
-                    top_row: view.top_row,
-                    left_column: view.left_column,
-                };
-            }
-        }
-        // return a safe default
-        SelectedView {
-            sheet: 0,
-            row: 1,
-            column: 1,
-            range: [1, 1, 1, 1],
-            top_row: 1,
-            left_column: 1,
-        }
-    }
-
-    /// Sets the the selected sheet
-    pub fn set_selected_sheet(&mut self, sheet: u32) -> Result<(), String> {
-        if self.model.workbook.worksheet(sheet).is_err() {
-            return Err(format!("Invalid worksheet index {}", sheet));
-        }
-        if let Some(view) = self.model.workbook.views.get_mut(&0) {
-            view.sheet = sheet;
-        }
-        Ok(())
-    }
-
-    /// Sets the selected cell
-    pub fn set_selected_cell(&mut self, row: i32, column: i32) -> Result<(), String> {
-        let sheet = if let Some(view) = self.model.workbook.views.get(&self.model.view_id) {
-            view.sheet
-        } else {
-            0
-        };
-        if !is_valid_column_number(column) {
-            return Err(format!("Invalid column: '{column}'"));
-        }
-        if !is_valid_column_number(row) {
-            return Err(format!("Invalid row: '{row}'"));
-        }
-        if self.model.workbook.worksheet(sheet).is_err() {
-            return Err(format!("Invalid worksheet index {}", sheet));
-        }
-        if let Ok(worksheet) = self.model.workbook.worksheet_mut(sheet) {
-            if let Some(view) = worksheet.views.get_mut(&0) {
-                view.row = row;
-                view.column = column;
-                view.range = [row, column, row, column];
-            }
-        }
-        Ok(())
-    }
-
-    /// Sets the selected range
-    pub fn set_selected_range(
-        &mut self,
-        start_row: i32,
-        start_column: i32,
-        end_row: i32,
-        end_column: i32,
-    ) -> Result<(), String> {
-        let sheet = if let Some(view) = self.model.workbook.views.get(&self.model.view_id) {
-            view.sheet
-        } else {
-            0
-        };
-
-        if !is_valid_column_number(start_column) {
-            return Err(format!("Invalid column: '{start_column}'"));
-        }
-        if !is_valid_column_number(start_row) {
-            return Err(format!("Invalid row: '{start_row}'"));
-        }
-
-        if !is_valid_column_number(end_column) {
-            return Err(format!("Invalid column: '{end_column}'"));
-        }
-        if !is_valid_column_number(end_row) {
-            return Err(format!("Invalid row: '{end_row}'"));
-        }
-        if self.model.workbook.worksheet(sheet).is_err() {
-            return Err(format!("Invalid worksheet index {}", sheet));
-        }
-        if let Ok(worksheet) = self.model.workbook.worksheet_mut(sheet) {
-            if let Some(view) = worksheet.views.get_mut(&0) {
-                view.range = [start_row, start_column, end_row, end_column];
-            }
-        }
-        Ok(())
-    }
-
-    /// Sets the value of the first visible cell
-    pub fn set_top_left_visible_cell(
-        &mut self,
-        top_row: i32,
-        left_column: i32,
-    ) -> Result<(), String> {
-        let sheet = if let Some(view) = self.model.workbook.views.get(&self.model.view_id) {
-            view.sheet
-        } else {
-            0
-        };
-
-        if !is_valid_column_number(left_column) {
-            return Err(format!("Invalid column: '{left_column}'"));
-        }
-        if !is_valid_column_number(top_row) {
-            return Err(format!("Invalid row: '{top_row}'"));
-        }
-        if self.model.workbook.worksheet(sheet).is_err() {
-            return Err(format!("Invalid worksheet index {}", sheet));
-        }
-        if let Ok(worksheet) = self.model.workbook.worksheet_mut(sheet) {
-            if let Some(view) = worksheet.views.get_mut(&0) {
-                view.top_row = top_row;
-                view.left_column = left_column;
-            }
-        }
-        Ok(())
-    }
     // **** Private methods ****** //
 
     fn push_diff_list(&mut self, diff_list: DiffList) {

bindings/wasm/src/lib.rs

@@ -286,56 +286,4 @@ impl Model {
     pub fn get_worksheets_properties(&self) -> JsValue {
         serde_wasm_bindgen::to_value(&self.model.get_worksheets_properties()).unwrap()
     }
-
-    #[wasm_bindgen(js_name = "getSelectedSheet")]
-    pub fn get_selected_sheet(&self) -> u32 {
-        self.model.get_selected_sheet()
-    }
-
-    #[wasm_bindgen(js_name = "getSelectedCell")]
-    pub fn get_selected_cell(&self) -> Vec<i32> {
-        let (sheet, row, column) = self.model.get_selected_cell();
-        vec![sheet as i32, row, column]
-    }
-
-    #[wasm_bindgen(js_name = "getSelectedView")]
-    pub fn get_selected_view(&self) -> JsValue {
-        serde_wasm_bindgen::to_value(&self.model.get_selected_view()).unwrap()
-    }
-
-    #[wasm_bindgen(js_name = "setSelectedSheet")]
-    pub fn set_selected_sheet(&mut self, sheet: u32) -> Result<(), JsError> {
-        self.model.set_selected_sheet(sheet).map_err(to_js_error)
-    }
-
-    #[wasm_bindgen(js_name = "setSelectedCell")]
-    pub fn set_selected_cell(&mut self, row: i32, column: i32) -> Result<(), JsError> {
-        self.model
-            .set_selected_cell(row, column)
-            .map_err(to_js_error)
-    }
-
-    #[wasm_bindgen(js_name = "setSelectedRange")]
-    pub fn set_selected_range(
-        &mut self,
-        start_row: i32,
-        start_column: i32,
-        end_row: i32,
-        end_column: i32,
-    ) -> Result<(), JsError> {
-        self.model
-            .set_selected_range(start_row, start_column, end_row, end_column)
-            .map_err(to_js_error)
-    }
-
-    #[wasm_bindgen(js_name = "setTopLeftVisibleCell")]
-    pub fn set_top_left_visible_cell(
-        &mut self,
-        top_row: i32,
-        top_column: i32,
-    ) -> Result<(), JsError> {
-        self.model
-            .set_top_left_visible_cell(top_row, top_column)
-            .map_err(to_js_error)
-    }
 }

solidjs_app/.storybook/main.ts

@@ -1,19 +0,0 @@
-import type { StorybookConfig } from "storybook-solidjs-vite";
-
-const config: StorybookConfig = {
-  stories: ["../src/**/*.mdx", "../src/**/*.stories.@(js|jsx|mjs|ts|tsx)"],
-  addons: [
-    "@storybook/addon-links",
-    "@storybook/addon-essentials",
-    "@chromatic-com/storybook",
-    "@storybook/addon-interactions",
-  ],
-  framework: {
-    name: "storybook-solidjs-vite",
-    options: {},
-  },
-  docs: {
-    autodocs: "tag",
-  },
-};
-export default config;

solidjs_app/.storybook/preview.ts

@@ -1,12 +0,0 @@
-const preview: Preview = {
-  parameters: {
-    controls: {
-      matchers: {
-        color: /(background|color)$/i,
-        date: /Date$/i,
-      },
-    },
-  },
-};
-
-export default preview;

solidjs_app/Makefile

@@ -1,8 +0,0 @@
-
-lint:
-	pnpm biome lint *   
-
-format:
-	pnpm biome format * 
-build:
-	pnpm run build

solidjs_app/README.md

@@ -1,70 +0,0 @@
-# Web IronCalc
-
-## Widgets
-
-Toolbar
-NavigationBar
-FormulaBar
-ColorPicker
-Number Formatter
-Border Picker
-
-
-## Stack
-
-Vite
-TypeScript
-SolidJs
-Lucide Icons
-BiomeJs
-Storybook
-pnpm
-
-## Recreate
-
-Install nodejs
-Activate pnpm
-    corepack enable pnpm
-Create app    
-    pnpm create vite
-    pnpm install
-add biomejs
-    pnpm add --save-dev --save-exact @biomejs/biome
-    pnpm biome init
-add solidjs
-add storybook
-    pnpm dlx storybook@latest init
-add i18n
-    pnpm add @solid-primitives/i18n
-(https://github.com/jfgodoy/vite-plugin-solid-svg)
-add vite-plugin-solid-svg
-add script: "restore": "cp node_modules/@ironcalc/wasm/wasm_bg.wasm node_modules/.vite/deps/",
-
-
-
-## Usage
-
-```bash
-$ pnpm install # or npm install or yarn install
-```
-
-## Available Scripts
-
-In the project directory, you can run:
-
-### `pnpm run dev`
-
-Runs the app in the development mode.<br>
-Open [http://localhost:5173](http://localhost:5173) to view it in the browser.
-
-### `pnpm run build`
-
-Builds the app for production to the `dist` folder.<br>
-It correctly bundles Solid in production mode and optimizes the build for the best performance.
-
-The build is minified and the filenames include the hashes.<br>
-Your app is ready to be deployed!
-
-## Deployment
-
-Learn more about deploying your application with the [documentations](https://vitejs.dev/guide/static-deploy.html)

solidjs_app/biome.json

@@ -1,15 +0,0 @@
-{
-  "$schema": "https://biomejs.dev/schemas/1.7.0/schema.json",
-  "organizeImports": {
-    "enabled": true
-  },
-  "linter": {
-    "enabled": true,
-    "rules": {
-      "recommended": true
-    }
-  },
-  "formatter": {
-    "indentStyle": "space"
-  }
-}

solidjs_app/index.html

@@ -1,13 +0,0 @@
-<!doctype html>
-<html lang="en">
-  <head>
-    <meta charset="UTF-8" />
-    <link rel="icon" type="image/svg+xml" href="/ironcalc_icon.svg" />
-    <meta name="viewport" content="width=device-width, initial-scale=1.0" />
-    <title>Vite + Solid + TS</title>
-  </head>
-  <body>
-    <div id="root"></div>
-    <script type="module" src="/src/index.tsx"></script>
-  </body>
-</html>

solidjs_app/package.json

@@ -1,35 +0,0 @@
-{
-  "name": "app",
-  "private": true,
-  "version": "0.0.0",
-  "type": "module",
-  "scripts": {
-    "restore": "cp node_modules/@ironcalc/wasm/wasm_bg.wasm node_modules/.vite/deps/",
-    "dev": "vite",
-    "build": "tsc && vite build",
-    "preview": "vite preview",
-    "storybook": "storybook dev -p 6006",
-    "build-storybook": "storybook build"
-  },
-  "dependencies": {
-    "@ironcalc/wasm": "file:../bindings/wasm/pkg",
-    "@solid-primitives/i18n": "^2.1.1",
-    "lucide-solid": "^0.379.0",
-    "solid-js": "^1.8.15"
-  },
-  "devDependencies": {
-    "@biomejs/biome": "1.7.0",
-    "@chromatic-com/storybook": "^1.3.3",
-    "@storybook/addon-essentials": "^8.0.8",
-    "@storybook/addon-interactions": "^8.0.8",
-    "@storybook/addon-links": "^8.0.8",
-    "@storybook/blocks": "^8.0.8",
-    "storybook": "^8.0.8",
-    "storybook-solidjs": "^1.0.0-beta.2",
-    "storybook-solidjs-vite": "^1.0.0-beta.2",
-    "typescript": "^5.2.2",
-    "vite": "^5.2.0",
-    "vite-plugin-solid": "^2.10.2",
-    "vite-plugin-solid-svg": "^0.8.1"
-  }
-}

solidjs_app/public/ironcalc_icon.svg

@@ -1,8 +0,0 @@
-<svg width="600" height="600" viewBox="0 0 600 600" fill="none" xmlns="http://www.w3.org/2000/svg">
-<rect width="600" height="600" rx="20" fill="#F2994A"/>
-<path opacity="0.8" fill-rule="evenodd" clip-rule="evenodd" d="M348.98 100C348.98 166.034 322.748 229.362 276.055 276.055C268.163 283.947 259.796 291.255 251.021 297.95L251.021 500L348.98 500H251.021C251.021 433.966 277.252 370.637 323.945 323.945C331.837 316.053 340.204 308.745 348.98 302.05L348.98 100Z" fill="white"/>
-<path opacity="0.8" fill-rule="evenodd" clip-rule="evenodd" d="M251.021 100.068C251.003 140.096 235.094 178.481 206.788 206.787C178.466 235.109 140.053 251.02 100 251.02V348.979C154.873 348.979 207.877 330.866 251.021 297.95V100.068Z" fill="white"/>
-<path opacity="0.8" fill-rule="evenodd" clip-rule="evenodd" d="M348.98 499.882C349.011 459.872 364.918 421.507 393.213 393.213C421.534 364.891 459.947 348.98 500 348.98V251.02C445.128 251.02 392.123 269.134 348.98 302.05V499.882Z" fill="white"/>
-<path fill-rule="evenodd" clip-rule="evenodd" d="M276.055 276.055C322.748 229.362 348.98 166.034 348.98 100H251.021V297.95C259.796 291.255 268.163 283.947 276.055 276.055Z" fill="white"/>
-<path fill-rule="evenodd" clip-rule="evenodd" d="M348.98 302.05V499.895C348.98 499.93 348.98 499.965 348.98 500L251.021 500C251.021 499.946 251.02 499.891 251.021 499.837C251.064 433.862 277.291 370.599 323.945 323.945C331.837 316.053 340.204 308.745 348.98 302.05Z" fill="white"/>
-</svg>

solidjs_app/src/App.css

@@ -1,7 +0,0 @@
-#root {
-  max-width: 1280px;
-  margin: 0 auto;
-  padding: 2rem;
-  text-align: center;
-}
-

solidjs_app/src/App.tsx

@@ -1,29 +0,0 @@
-import { Show, createResource } from "solid-js";
-// import "./App.css";
-// import solidLogo from "./assets/solid.svg";
-
-import init, { Model } from "@ironcalc/wasm";
-import Workbook from "./components/Workbook";
-
-const fetchModel = async () => {
-  await init();
-  // const model_bytes = new Uint8Array(
-  //     await (await fetch("./example.ic")).arrayBuffer(),
-  //   );
-  //   const _model = Model.from_bytes(model_bytes);*/
-  const model = new Model("en", "UTC");
-  model.setUserInput(0, 1, 1, "=1+1");
-  return model;
-};
-
-function App() {
-  const [model] = createResource(fetchModel);
-
-  return (
-    <Show when={model()} fallback={<div>Loading...</div>}>
-      {(model) => <Workbook model={model()} />}
-    </Show>
-  );
-}
-
-export default App;

solidjs_app/src/assets/ironcalc_icon.svg

@@ -1,8 +0,0 @@
-<svg width="600" height="600" viewBox="0 0 600 600" fill="none" xmlns="http://www.w3.org/2000/svg">
-<rect width="600" height="600" rx="20" fill="#F2994A"/>
-<path opacity="0.8" fill-rule="evenodd" clip-rule="evenodd" d="M348.98 100C348.98 166.034 322.748 229.362 276.055 276.055C268.163 283.947 259.796 291.255 251.021 297.95L251.021 500L348.98 500H251.021C251.021 433.966 277.252 370.637 323.945 323.945C331.837 316.053 340.204 308.745 348.98 302.05L348.98 100Z" fill="white"/>
-<path opacity="0.8" fill-rule="evenodd" clip-rule="evenodd" d="M251.021 100.068C251.003 140.096 235.094 178.481 206.788 206.787C178.466 235.109 140.053 251.02 100 251.02V348.979C154.873 348.979 207.877 330.866 251.021 297.95V100.068Z" fill="white"/>
-<path opacity="0.8" fill-rule="evenodd" clip-rule="evenodd" d="M348.98 499.882C349.011 459.872 364.918 421.507 393.213 393.213C421.534 364.891 459.947 348.98 500 348.98V251.02C445.128 251.02 392.123 269.134 348.98 302.05V499.882Z" fill="white"/>
-<path fill-rule="evenodd" clip-rule="evenodd" d="M276.055 276.055C322.748 229.362 348.98 166.034 348.98 100H251.021V297.95C259.796 291.255 268.163 283.947 276.055 276.055Z" fill="white"/>
-<path fill-rule="evenodd" clip-rule="evenodd" d="M348.98 302.05V499.895C348.98 499.93 348.98 499.965 348.98 500L251.021 500C251.021 499.946 251.02 499.891 251.021 499.837C251.064 433.862 277.291 370.599 323.945 323.945C331.837 316.053 340.204 308.745 348.98 302.05Z" fill="white"/>
-</svg>

solidjs_app/src/components/Workbook.tsx

@@ -1,23 +0,0 @@
-import type { Model } from "@ironcalc/wasm";
-import styles from "./workbook.module.css";
-import Toolbar from "./toolbar/Toolbar";
-import Navigation from "./navigation/Navigation";
-import FormulaBar from "./formulabar/FormulaBar";
-import Worksheet from "./Worksheet/Worksheet";
-
-function Workbook(props: { model: Model }) {
-  const onkeydown = (event: KeyboardEvent) => {
-    console.log("key pressed: ", event);
-  };
-  return (
-    <div class={styles.workbook} onkeydown={onkeydown} tabIndex={0}>
-      <Toolbar></Toolbar>
-      {/* {props.model.getFormattedCellValue(0, 1, 1)} */}
-      <FormulaBar></FormulaBar>
-      <Worksheet></Worksheet>
-      <Navigation></Navigation>
-    </div>
-  );
-}
-
-export default Workbook;

solidjs_app/src/components/Worksheet/Worksheet.tsx

@@ -1,14 +0,0 @@
-import styles from "./worksheet.module.css";
-
-function Worksheet() {
-  const onkeydown = (event: KeyboardEvent) => {
-    console.log("key pressed: ", event);
-  };
-  return (
-    <div class={styles.worksheet} onkeydown={onkeydown} tabIndex={0}>
-
-    </div>
-  );
-}
-
-export default Worksheet;

solidjs_app/src/components/formulabar/FormulaBar.tsx

@@ -1,14 +0,0 @@
-import styles from "./formulabar.module.css";
-
-function FormulaBar() {
-  const onkeydown = (event: KeyboardEvent) => {
-    console.log("key pressed: ", event);
-  };
-  return (
-    <div class={styles.toolbar} onkeydown={onkeydown} tabIndex={0}>
-
-    </div>
-  );
-}
-
-export default FormulaBar;

solidjs_app/src/components/navigation/Navigation.tsx

@@ -1,14 +0,0 @@
-import styles from "./navigation.module.css";
-
-function Navigation() {
-  const onkeydown = (event: KeyboardEvent) => {
-    console.log("key pressed: ", event);
-  };
-  return (
-    <div class={styles.navigation} onkeydown={onkeydown} tabIndex={0}>
-
-    </div>
-  );
-}
-
-export default Navigation;

solidjs_app/src/components/toolbar/Toolbar.tsx

@@ -1,299 +0,0 @@
-import { JSX } from "solid-js/jsx-runtime";
-import styles from "./toolbar.module.css";
-import {
-  AlignCenter,
-  AlignLeft,
-  AlignRight,
-  ArrowDownToLine,
-  ArrowUpToLine,
-  Bold,
-  ChevronDown,
-  Euro,
-  Grid2X2,
-  Italic,
-  Paintbrush2,
-  PaintBucket,
-  Percent,
-  Redo2,
-  Strikethrough,
-  Type,
-  Underline,
-  Undo2,
-} from "lucide-solid";
-import { DecimalPlacesDecreaseIcon, DecimalPlacesIncreaseIcon, ArrowMiddleFromLine } from "../../icons";
-
-function Toolbar() {
-  const onkeydown = (event: KeyboardEvent) => {
-    console.log("key pressed: ", event);
-  };
-
-  const t = (s: string): string => s;
-
-  const properties = {
-    onUndo: () => {},
-    canUndo: true,
-    onRedo: () => {},
-    canRedo: true,
-    onCopyStyles: () => {},
-    canEdit: true,
-  };
-
-  return (
-    <div class={styles.toolbar} onkeydown={onkeydown} tabIndex={0}>
-      <StyledButton
-        pressed={false}
-        onClick={properties.onUndo}
-        disabled={!properties.canUndo}
-        title={t("toolbar.undo")}
-      >
-        <Undo2 />
-      </StyledButton>
-      <StyledButton
-        pressed={false}
-        onClick={properties.onRedo}
-        disabled={!properties.canRedo}
-        title={t("toolbar.redo")}
-      >
-        <Redo2 />
-      </StyledButton>
-      <div class={styles.divider} />
-      <StyledButton
-        pressed={false}
-        onClick={properties.onCopyStyles}
-        title={t("toolbar.copy_styles")}
-      >
-        <Paintbrush2 />
-      </StyledButton>
-      <div class={styles.divider} />
-      <StyledButton
-        pressed={false}
-        // onClick={(): void => {
-        //   properties.onNumberFormatPicked(NumberFormats.CURRENCY_EUR);
-        // }}
-        title={t("toolbar.euro")}
-      >
-        <Euro />
-      </StyledButton>
-      <StyledButton
-        pressed={false}
-        // onClick={(): void => {
-        //   properties.onNumberFormatPicked(NumberFormats.PERCENTAGE);
-        // }}
-        title={t("toolbar.percentage")}
-      >
-        <Percent />
-      </StyledButton>
-      <StyledButton
-        pressed={false}
-        // onClick={(): void => {
-        //   properties.onNumberFormatPicked(
-        //     decreaseDecimalPlaces(properties.numFmt)
-        //   );
-        // }}
-        title={t("toolbar.decimal_places_decrease")}
-      >
-        <div><DecimalPlacesDecreaseIcon /></div>
-      </StyledButton>
-      <StyledButton
-        pressed={false}
-        // onClick={(): void => {
-        //   properties.onNumberFormatPicked(
-        //     increaseDecimalPlaces(properties.numFmt)
-        //   );
-        // }}
-        title={t("toolbar.decimal_places_increase")}
-      >
-        <DecimalPlacesIncreaseIcon />
-      </StyledButton>
-      {/* //   <FormatMenu
-    //     numFmt={properties.numFmt}
-    //     onChange={(numberFmt): void => {
-    //       properties.onNumberFormatPicked(numberFmt);
-    //     }}
-    //     onExited={(): void => {}}
-    //     anchorOrigin={{
-    //       horizontal: 20, // Aligning the menu to the middle of FormatButton
-    //       vertical: "bottom",
-    //     }}
-    //   >*/
-        <StyledButton
-
-          pressed={false}
-          
-          title={t("toolbar.format_number")}
-        >
-          <div class={styles.format_menu}>{"123"}<ChevronDown /></div>
-          
-        </StyledButton>
-    /*   </FormatMenu> */}
-      <div class={styles.divider} />
-      <StyledButton
-        // pressed={properties.bold}
-        // onClick={() => properties.onToggleBold(!properties.bold)}
-        title={t("toolbar.bold")}
-      >
-        <Bold />
-      </StyledButton>
-      <StyledButton
-        // pressed={properties.italic}
-        // onClick={() => properties.onToggleItalic(!properties.italic)}
-        title={t("toolbar.italic")}
-      >
-        <Italic />
-      </StyledButton>
-      <StyledButton
-        // pressed={properties.underline}
-        // onClick={() => properties.onToggleUnderline(!properties.underline)}
-        title={t("toolbar.underline")}
-      >
-        <Underline />
-      </StyledButton>
-      <StyledButton
-        // pressed={properties.strike}
-        // onClick={() => properties.onToggleStrike(!properties.strike)}
-        title={t("toolbar.strike_trough")}
-      >
-        <Strikethrough />
-      </StyledButton>
-      <div class={styles.divider} />
-      <StyledButton
-        pressed={false}
-        title={t("toolbar.font_color")}
-        // ref={fontColorButton}
-        // underlinedColor={properties.fontColor}
-        // onClick={() => setFontColorPickerOpen(true)}
-      >
-        <Type />
-      </StyledButton>
-      <StyledButton
-        pressed={false}
-        title={t("toolbar.fill_color")}
-        // ref={fillColorButton}
-        // underlinedColor={properties.fillColor}
-        // onClick={() => setFillColorPickerOpen(true)}
-      >
-        <PaintBucket />
-      </StyledButton>
-      <div class={styles.divider} />
-      <StyledButton
-        // pressed={properties.horizontalAlign === "left"}
-        // onClick={() =>
-        //   properties.onToggleHorizontalAlign(
-        //     properties.horizontalAlign === "left" ? "general" : "left"
-        //   )
-        // }
-        title={t("toolbar.align_left")}
-      >
-        <AlignLeft />
-      </StyledButton>
-      <StyledButton
-        // pressed={properties.horizontalAlign === "center"}
-        // onClick={() =>
-        //   properties.onToggleHorizontalAlign(
-        //     properties.horizontalAlign === "center" ? "general" : "center"
-        //   )
-        // }
-        title={t("toolbar.align_center")}
-      >
-        <AlignCenter />
-      </StyledButton>
-      <StyledButton
-        // pressed={properties.horizontalAlign === "right"}
-        // onClick={() =>
-        //   properties.onToggleHorizontalAlign(
-        //     properties.horizontalAlign === "right" ? "general" : "right"
-        //   )
-        // }
-        title={t("toolbar.align_right")}
-      >
-        <AlignRight />
-      </StyledButton>
-      <StyledButton
-        // pressed={properties.verticalAlign === "top"}
-        // onClick={() =>
-        //   properties.onToggleVerticalAlign(
-        //     properties.verticalAlign === "top" ? "bottom" : "top"
-        //   )
-        // }
-        title={t("toolbar.vertical_align_top")}
-      >
-        <ArrowUpToLine />
-      </StyledButton>
-      <StyledButton
-        // pressed={properties.verticalAlign === "center"}
-        // onClick={() =>
-        //   properties.onToggleVerticalAlign(
-        //     properties.verticalAlign === "center" ? "bottom" : "center"
-        //   )
-        // }
-        title={t("toolbar.vertical_align_center")}
-      >
-        <ArrowMiddleFromLine />
-      </StyledButton>
-      <StyledButton
-        // pressed={properties.verticalAlign === "bottom"}
-        // onClick={() => properties.onToggleVerticalAlign("bottom")}
-        title={t("toolbar.vertical_align_bottom")}
-      >
-        <ArrowDownToLine />
-      </StyledButton>
-      <div class={styles.divider} />
-      <StyledButton
-        pressed={false}
-        // onClick={() => setBorderPickerOpen(true)}
-        // ref={borderButton}
-        title={t("toolbar.borders")}
-      >
-        <Grid2X2 />
-      </StyledButton>
-      {/* //   <ColorPicker
-    //     color={properties.fontColor}
-    //     onChange={(color): void => {
-    //       properties.onTextColorPicked(color);
-    //       setFontColorPickerOpen(false);
-    //     }}
-    //     anchorEl={fontColorButton}
-    //     open={fontColorPickerOpen}
-    //   />
-    //   <ColorPicker
-    //     color={properties.fillColor}
-    //     onChange={(color): void => {
-    //       properties.onFillColorPicked(color);
-    //       setFillColorPickerOpen(false);
-    //     }}
-    //     anchorEl={fillColorButton}
-    //     open={fillColorPickerOpen}
-    //   />
-    //   <BorderPicker
-    //     onChange={(border): void => {
-    //       properties.onBorderChanged(border);
-    //       setBorderPickerOpen(false);
-    //     }}
-    //     anchorEl={borderButton}
-    //     open={borderPickerOpen}
-    //   /> */}
-    </div>
-  );
-}
-
-function StyledButton(props: {
-  children: JSX.Element;
-  title: string;
-  onClick?: () => void;
-  disabled?: boolean;
-  pressed?: boolean;
-  underlinedColor?: string;
-}) {
-  return (
-    <button
-      disabled={props.disabled || false}
-      onClick={props.onClick}
-      title={props.title}
-      class={styles.button}
-    >
-      {props.children}
-    </button>
-  );
-}
-
-export default Toolbar;

solidjs_app/src/components/toolbar/toolbar.module.css

@@ -1,67 +0,0 @@
-.toolbar {
-  display: flex;
-  flex-shrink: 0;
-  align-items: center;
-  /* ${({ theme }) => theme.palette.background.paper}; */
-  background: #fff;
-  height: 40px;
-  line-height: 40px;
-  /* theme.palette.grey["600"] */
-  border-bottom: 1px solid #757575;
-  font-family: Inter;
-  border-radius: 4px 4px 0px 0px;
-  overflow-x: auto;
-}
-
-.button {
-  width: 24px;
-  height: 24px;
-  display: inline-flex;
-  align-items: center;
-  justify-content: center;
-  font-size: 26px;
-  border: 0px solid #fff;
-  border-radius: 2px;
-  margin-right: 5px;
-  transition: all 0.2s;
-  cursor: pointer;
-  background-color: white;
-  padding: 0px;
-}
-
-.button:disabled {
-  color: grey;
-  cursor: default;
-}
-
-.button:not(disabled) {
-  border-top: none;
-  border-bottom: none;
-  color: #21243a;
-  background-color: #fff;
-}
-
-.button:hover {
-  background-color: #f1f2f8;
-  border-top-color: #f1f2f8;
-}
-
-.button svg {
-  width: 16px;
-  height: 16px;
-}
-
-.divider {
-  width: 0px;
-  height: 10px;
-  border-left: 1px solid #d3d6e9;
-  margin-left: 5px;
-  margin-right: 10px;
-}
-
-.format_menu {
-    width: 40px; 
-    font-size: 13px;
-    font-weight: 400;
-    display: flex;
-}

solidjs_app/src/components/workbook.module.css

@@ -1,6 +0,0 @@
-/* @import './theme.css'; */
-
-.workbook {
-    /* background-color:  var(--main-bg-color); */
-    /* color: var(--other); */
-}

solidjs_app/src/icons/index.ts

@@ -1,46 +0,0 @@
-import DecimalPlacesDecreaseIcon from "./decrease-decimal.svg";
-import DecimalPlacesIncreaseIcon from "./increase-decimal.svg";
-
-import BorderBottomIcon from "./border-bottom.svg";
-import BorderCenterHIcon from "./border-center-h.svg";
-import BorderCenterVIcon from "./border-center-v.svg";
-import BorderInnerIcon from "./border-inner.svg";
-import BorderLeftIcon from "./border-left.svg";
-import BorderOuterIcon from "./border-outer.svg";
-import BorderRightIcon from "./border-right.svg";
-import BorderTopIcon from "./border-top.svg";
-import BorderNoneIcon from "./border-none.svg";
-import BorderStyleIcon from "./border-style.svg";
-
-import DeleteColumnIcon from "./delete-column.svg";
-import DeleteRowIcon from "./delete-row.svg";
-import InsertColumnLeftIcon from "./insert-column-left.svg";
-import InsertColumnRightIcon from "./insert-column-right.svg";
-import InsertRowAboveIcon from "./insert-row-above.svg";
-import InsertRowBelow from "./insert-row-below.svg";
-import ArrowMiddleFromLine from "./arrow-middle-from-line.svg";
-
-import Fx from "./fx.svg";
-
-export {
-  ArrowMiddleFromLine,
-  DecimalPlacesDecreaseIcon,
-  DecimalPlacesIncreaseIcon,
-  BorderBottomIcon,
-  BorderCenterHIcon,
-  BorderCenterVIcon,
-  BorderInnerIcon,
-  BorderLeftIcon,
-  BorderOuterIcon,
-  BorderRightIcon,
-  BorderTopIcon,
-  BorderNoneIcon,
-  BorderStyleIcon,
-  DeleteColumnIcon,
-  DeleteRowIcon,
-  InsertColumnLeftIcon,
-  InsertColumnRightIcon,
-  InsertRowAboveIcon,
-  InsertRowBelow,
-  Fx,
-};

solidjs_app/src/index.css

@@ -1,68 +0,0 @@
-:root {
-  font-family: Inter, system-ui, Avenir, Helvetica, Arial, sans-serif;
-  line-height: 1.5;
-  font-weight: 400;
-
-  color-scheme: light dark;
-  color: rgba(255, 255, 255, 0.87);
-  background-color: #242424;
-
-  font-synthesis: none;
-  text-rendering: optimizeLegibility;
-  -webkit-font-smoothing: antialiased;
-  -moz-osx-font-smoothing: grayscale;
-}
-
-a {
-  font-weight: 500;
-  color: #646cff;
-  text-decoration: inherit;
-}
-a:hover {
-  color: #535bf2;
-}
-
-body {
-  margin: 0;
-  display: flex;
-  place-items: center;
-  min-width: 320px;
-  min-height: 100vh;
-}
-
-h1 {
-  font-size: 3.2em;
-  line-height: 1.1;
-}
-
-button {
-  border-radius: 8px;
-  border: 1px solid transparent;
-  padding: 0.6em 1.2em;
-  font-size: 1em;
-  font-weight: 500;
-  font-family: inherit;
-  background-color: #1a1a1a;
-  cursor: pointer;
-  transition: border-color 0.25s;
-}
-button:hover {
-  border-color: #646cff;
-}
-button:focus,
-button:focus-visible {
-  outline: 4px auto -webkit-focus-ring-color;
-}
-
-@media (prefers-color-scheme: light) {
-  :root {
-    color: #213547;
-    background-color: #ffffff;
-  }
-  a:hover {
-    color: #747bff;
-  }
-  button {
-    background-color: #f9f9f9;
-  }
-}

solidjs_app/src/index.tsx

@@ -1,12 +0,0 @@
-/* @refresh reload */
-import { render } from "solid-js/web";
-
-import App from "./App";
-// import "./index.css";
-import "./theme.css";
-
-const root = document.getElementById("root");
-
-if (root) {
-  render(() => <App />, root);
-}

solidjs_app/src/theme.css

@@ -1,4 +0,0 @@
-:root {
-    --main-bg-color: brown;
-    --other: blue;
-}

solidjs_app/src/typings.d.ts

@@ -1 +0,0 @@
-declare module "*.module.css";

solidjs_app/src/vite-env.d.ts

@@ -1 +0,0 @@
-/// <reference types="vite/client" />

solidjs_app/vite.config.ts

@@ -1,8 +0,0 @@
-import { defineConfig } from "vite";
-import solid from "vite-plugin-solid";
-import solidPlugin from "vite-plugin-solid";
-import solidSvg from "vite-plugin-solid-svg";
-
-export default defineConfig({
-  plugins: [solid(), solidPlugin(), solidSvg()],
-});

webapp/.gitignore

@@ -1,2 +1,3 @@
 node_modules/*
 dist/*
+example.json

webapp/.storybook/main.ts

@@ -0,0 +1,19 @@
+import type { StorybookConfig } from '@storybook/react-vite';
+
+const config: StorybookConfig = {
+  stories: ['../src/**/*.mdx', '../src/**/*.stories.@(js|jsx|mjs|ts|tsx)'],
+  addons: [
+    '@storybook/addon-links',
+    '@storybook/addon-essentials',
+    '@storybook/addon-onboarding',
+    '@storybook/addon-interactions',
+  ],
+  framework: {
+    name: '@storybook/react-vite',
+    options: {},
+  },
+  docs: {
+    autodocs: 'tag',
+  },
+};
+export default config;

webapp/.storybook/preview.tsx

@@ -0,0 +1,29 @@
+import type { Preview } from '@storybook/react';
+import i18n from '../src/i18n';
+import { I18nextProvider } from 'react-i18next';
+import React from 'react';
+
+
+const withI18next = (Story: any) => {
+  return (
+      <I18nextProvider i18n={i18n}>
+        <Story />
+      </I18nextProvider>
+  );
+};
+
+const preview: Preview = {
+  parameters: {
+    actions: { argTypesRegex: '^on[A-Z].*' },
+    controls: {
+      matchers: {
+        color: /(background|color)$/i,
+        date: /Date$/i,
+      },
+    },
+  },
+};
+
+
+export const decorators = [withI18next];
+export default preview;

webapp/README.md

@@ -0,0 +1,21 @@
+# IronCalc Web App
+
+## Build
+
+```bash
+npm install
+```
+
+## Local development
+
+```bash
+npm run dev
+```
+
+# Deploy
+
+```bash
+npm install
+npm run build
+```
+

webapp/index.html

@@ -0,0 +1,16 @@
+<!doctype html>
+<html lang="en">
+  <head>
+    <meta charset="UTF-8" />
+    <!-- <link rel="icon" type="image/svg+xml" href="/vite.svg" /> -->
+    <meta name="viewport" content="width=device-width, initial-scale=1.0" />
+    <!-- <meta name="theme-color" content="#1bb566"> -->
+    <meta name="theme-color" media="(prefers-color-scheme: light)" content="#F2994A" />
+    <meta name="theme-color" media="(prefers-color-scheme: dark)" content="black" />
+    <title>Spreadsheet</title>
+  </head>
+  <body>
+    <div id="root"></div>
+    <script type="module" src="/src/main.tsx"></script>
+  </body>
+</html>

webapp/jest.config.ts

@@ -0,0 +1,15 @@
+import type { Config } from "jest";
+// import {defaults} from 'jest-config';
+
+const config: Config = {
+  // testMatch:["**.jest.mjs"],
+  moduleFileExtensions: ["js", "ts", "mts", "mjs"],
+  transform: {
+    "^.+\\.[jt]s?$": "ts-jest",
+  },
+  moduleNameMapper: {
+    "^@ironcalc/wasm$": "<rootDir>/node_modules/@ironcalc/nodejs/"
+  },
+};
+
+export default config;

webapp/package.json

@@ -0,0 +1,55 @@
+{
+  "name": "frontend",
+  "private": true,
+  "version": "0.0.0",
+  "type": "module",
+  "scripts": {
+    "restore": "cp node_modules/@ironcalc/wasm/wasm_bg.wasm node_modules/.vite/deps/",
+    "dev": "vite",
+    "test": "jest",
+    "build": "tsc && vite build",
+    "lint": "eslint . --ext ts,tsx --report-unused-disable-directives --max-warnings 0",
+    "preview": "vite preview",
+    "storybook": "storybook dev -p 6006",
+    "build-storybook": "storybook build"
+  },
+  "dependencies": {
+    "@emotion/react": "^11.11.4",
+    "@emotion/styled": "^11.11.5",
+    "@ironcalc/wasm": "file:../bindings/wasm/pkg",
+    "@mui/material": "^5.15.15",
+    "i18next": "^23.11.1",
+    "lucide-react": "^0.292.0",
+    "react": "^18.2.0",
+    "react-colorful": "^5.6.1",
+    "react-dom": "^18.2.0",
+    "react-i18next": "^13.5.0"
+  },
+  "devDependencies": {
+    "@storybook/addon-essentials": "^7.6.17",
+    "@storybook/addon-interactions": "^7.6.17",
+    "@storybook/addon-links": "^7.6.17",
+    "@storybook/addon-onboarding": "^1.0.11",
+    "@storybook/blocks": "^7.5.3",
+    "@storybook/react": "^7.5.3",
+    "@storybook/react-vite": "^7.6.17",
+    "@storybook/testing-library": "^0.2.2",
+    "@types/jest": "^29.5.12",
+    "@types/react": "^18.2.75",
+    "@types/react-dom": "^18.2.24",
+    "@typescript-eslint/eslint-plugin": "^6.21.0",
+    "@typescript-eslint/parser": "^6.21.0",
+    "@vitejs/plugin-react": "^4.2.1",
+    "eslint": "^8.57.0",
+    "eslint-plugin-react-hooks": "^4.6.0",
+    "eslint-plugin-react-refresh": "^0.4.6",
+    "eslint-plugin-storybook": "^0.6.15",
+    "jest": "^29.7.0",
+    "storybook": "^7.6.17",
+    "ts-jest": "^29.1.2",
+    "ts-node": "^10.9.2",
+    "typescript": "^5.4.5",
+    "vite": "^5.2.8",
+    "vite-plugin-svgr": "^4.2.0"
+  }
+}

webapp/src/App.css

@@ -0,0 +1,6 @@
+#root {
+    position: absolute;
+    inset: 10px;
+    border: 1px solid #AAA;
+    border-radius: 4px;
+}

webapp/src/App.tsx

@@ -0,0 +1,40 @@
+import "./App.css";
+import Workbook from "./components/workbook";
+import "./i18n";
+import { createContext, useEffect, useState } from "react";
+import init, { Model } from "@ironcalc/wasm";
+import { WorkbookState } from "./components/workbookState";
+import WorkbookContext from "./components/workbookContext";
+
+function App() {
+  const [model, setModel] = useState<Model | null>(null);
+  const [workbookState, setWorkbookState] = useState<WorkbookState | null>(
+    null
+  );
+  useEffect(() => {
+    async function start() {
+      await init();
+      const model_bytes = new Uint8Array(await (await fetch("./example.ic")).arrayBuffer());
+      const _model = Model.from_bytes(model_bytes);
+      // const _model = new Model("en", "UTC");
+      if (!model) setModel(_model);
+      if (!workbookState) setWorkbookState(new WorkbookState());
+    }
+    start();
+  }, []);
+
+  if (!model || !workbookState) {
+    return <div>Loading</div>;
+  }
+
+  // We could use context for model, but the problem is that it should initialized to null.
+  // Passing the property down makes sure it is always defined.
+  return (
+    // <WorkbookContext.Provider value={{}}>
+    <Workbook model={model} workbookState={workbookState} />
+    // </WorkbookContext.Provider>
+  );
+}
+
+export default App;
+

webapp/src/components/README.md

@@ -0,0 +1,12 @@
+# Keyboard and mouse events architecture
+
+This document describes the architecture of the keyboard navigation and mouse events in IronCalc Web
+
+There are two modes for mouse events:
+
+* Normal mode: clicking a cell selects it, clicking on a sheet opens it
+* Browse mode: clicking on a cell updates the formula, etc
+
+While in browse mode some mouse events might end the browse mode
+
+We follow Excel's way of navigating a spreadsheet

webapp/src/components/WorksheetCanvas/constants.ts

@@ -0,0 +1,25 @@
+export const headerCornerBackground = '#FFF';
+export const headerTextColor = '#333';
+export const headerBackground = '#FFF';
+export const headerGlobalSelectorColor = '#EAECF4';
+export const headerSelectedBackground = '#EEEEEE';
+export const headerFullSelectedBackground = '#D3D6E9';
+export const headerSelectedColor = '#333';
+export const headerBorderColor = '#DEE0EF';
+
+export const gridColor = '#D3D6E9';
+export const gridSeparatorColor = '#D3D6E9';
+export const defaultTextColor = '#2E414D';
+
+export const outlineColor = '#F2994A';
+export const outlineBackgroundColor = '#F2994A1A';
+
+export const LAST_COLUMN = 16_384;
+export const LAST_ROW = 1_048_576;
+
+// FIXME: Browsers cannot have a height that big
+// For now we will go A-IZ and 10_000 rows
+export const lastColumn = 260; // TODO: Excel supports up to 16_384
+// I know of a world with one million moons.
+// Carl Sagan in The cosmic connection Chapter 7 "Space Exploration as a Human Enterprise"
+export const lastRow = 10_000; // TODO: Excel supports up to 1_048_576

webapp/src/components/WorksheetCanvas/types.ts

@@ -0,0 +1,23 @@
+export interface Cell {
+  row: number;
+  column: number;
+}
+
+export interface Area {
+  rowStart: number;
+  rowEnd: number;
+  columnStart: number;
+  columnEnd: number;
+}
+
+export interface SheetArea extends Area {
+  sheet: number;
+  color: string;
+}
+
+interface AreaWithBorderInterface extends Area {
+  border: "left" | "top" | "right" | "bottom";
+}
+
+export type AreaWithBorder = AreaWithBorderInterface | null;
+

webapp/src/components/WorksheetCanvas/util.ts

@@ -0,0 +1,396 @@
+const letters = [
+    'A',
+    'B',
+    'C',
+    'D',
+    'E',
+    'F',
+    'G',
+    'H',
+    'I',
+    'J',
+    'K',
+    'L',
+    'M',
+    'N',
+    'O',
+    'P',
+    'Q',
+    'R',
+    'S',
+    'T',
+    'U',
+    'V',
+    'W',
+    'X',
+    'Y',
+    'Z',
+  ];
+  interface Reference {
+    row: number;
+    column: number;
+    absoluteRow: boolean;
+    absoluteColumn: boolean;
+  }
+  
+  export function referenceToString(rf: Reference): string {
+    const absC = rf.absoluteColumn ? '$' : '';
+    const absR = rf.absoluteRow ? '$' : '';
+    return absC + columnNameFromNumber(rf.column) + absR + rf.row;
+  }
+  
+  export function columnNameFromNumber(column: number): string {
+    let columnName = '';
+    let index = column;
+    while (index > 0) {
+      columnName = `${letters[(index - 1) % 26]}${columnName}`;
+      index = Math.floor((index - 1) / 26);
+    }
+    return columnName;
+  }
+  
+  export function columnNumberFromName(columnName: string): number {
+    let column = 0;
+    for (const character of columnName) {
+      const index = (character.codePointAt(0) ?? 0) - 64;
+      column = column * 26 + index;
+    }
+    return column;
+  }
+  
+  // EqualTo Color Palette
+  export function getColor(index: number, alpha = 1): string {
+    const colors = [
+      {
+        name: 'Cyan',
+        rgba: [89, 185, 188, 1],
+        hex: '#59B9BC',
+      },
+      {
+        name: 'Flamingo',
+        rgba: [236, 87, 83, 1],
+        hex: '#EC5753',
+      },
+      {
+        hex: '#3358B7',
+        rgba: [51, 88, 183, 1],
+        name: 'Blue',
+      },
+      {
+        hex: '#F8CD3C',
+        rgba: [248, 205, 60, 1],
+        name: 'Yellow',
+      },
+      {
+        hex: '#3BB68A',
+        rgba: [59, 182, 138, 1],
+        name: 'Emerald',
+      },
+      {
+        hex: '#523E93',
+        rgba: [82, 62, 147, 1],
+        name: 'Violet',
+      },
+      {
+        hex: '#A23C52',
+        rgba: [162, 60, 82, 1],
+        name: 'Burgundy',
+      },
+      {
+        hex: '#8CB354',
+        rgba: [162, 60, 82, 1],
+        name: 'Wasabi',
+      },
+      {
+        hex: '#D03627',
+        rgba: [208, 54, 39, 1],
+        name: 'Red',
+      },
+      {
+        hex: '#1B717E',
+        rgba: [27, 113, 126, 1],
+        name: 'Teal',
+      },
+    ];
+    if (alpha === 1) {
+      return colors[index % 10].hex;
+    }
+    const { rgba } = colors[index % 10];
+    return `rgba(${rgba[0]}, ${rgba[1]}, ${rgba[2]}, ${alpha})`;
+  }
+  
+  export function mergedAreas(area1: Area, area2: Area): Area {
+    return {
+      rowStart: Math.min(area1.rowStart, area2.rowStart, area1.rowEnd, area2.rowEnd),
+      rowEnd: Math.max(area1.rowStart, area2.rowStart, area1.rowEnd, area2.rowEnd),
+      columnStart: Math.min(area1.columnStart, area2.columnStart, area1.columnEnd, area2.columnEnd),
+      columnEnd: Math.max(area1.columnStart, area2.columnStart, area1.columnEnd, area2.columnEnd),
+    };
+  }
+  
+  export function getExpandToArea(area: Area, cell: Cell): AreaWithBorder {
+    let { rowStart, rowEnd, columnStart, columnEnd } = area;
+    if (rowStart > rowEnd) {
+      [rowStart, rowEnd] = [rowEnd, rowStart];
+    }
+    if (columnStart > columnEnd) {
+      [columnStart, columnEnd] = [columnEnd, columnStart];
+    }
+    const { row, column } = cell;
+    if (row <= rowEnd && row >= rowStart && column >= columnStart && column <= columnEnd) {
+      return null;
+    }
+    // Two rules:
+    //   * The extendTo area must be larger than the selected area
+    //   * The extendTo area must be of the same width or the same height as the selected area
+    if (row >= rowEnd && column >= columnStart) {
+      // Normal case: we are expanding down and right
+      if (row - rowEnd > column - columnEnd) {
+        // Expanding by rows (down)
+        return {
+          rowStart: rowEnd + 1,
+          rowEnd: row,
+          columnStart,
+          columnEnd,
+          border: 'top',
+        };
+      }
+      // expanding by columns (right)
+      return {
+        rowStart,
+        rowEnd,
+        columnStart: columnEnd + 1,
+        columnEnd: column,
+        border: 'left',
+      };
+    }
+    if (row >= rowEnd && column <= columnStart) {
+      // We are expanding down and left
+      if (row - rowEnd > columnStart - column) {
+        // Expanding by rows (down)
+        return {
+          rowStart: rowEnd + 1,
+          rowEnd: row,
+          columnStart,
+          columnEnd,
+          border: 'top',
+        };
+      }
+      // Expanding by columns (left)
+      return {
+        rowStart,
+        rowEnd,
+        columnStart: column,
+        columnEnd: columnStart - 1,
+        border: 'right',
+      };
+    }
+    if (row <= rowEnd && column >= columnEnd) {
+      // We are expanding up and right
+      if (rowStart - row > column - columnEnd) {
+        // Expanding by rows (up)
+        return {
+          rowStart: row,
+          rowEnd: rowStart - 1,
+          columnStart,
+          columnEnd,
+          border: 'bottom',
+        };
+      }
+      // Expanding by columns (right)
+      return {
+        rowStart,
+        rowEnd,
+        columnStart: columnEnd + 1,
+        columnEnd: column,
+        border: 'left',
+      };
+    }
+    if (row <= rowEnd && column <= columnStart) {
+      // We are expanding up and left
+      if (rowStart - row > columnStart - column) {
+        // Expanding by rows (up)
+        return {
+          rowStart: row,
+          rowEnd: rowStart - 1,
+          columnStart,
+          columnEnd,
+          border: 'bottom',
+        };
+      }
+      // Expanding by columns (left)
+      return {
+        rowStart,
+        rowEnd,
+        columnStart: column,
+        columnEnd: columnStart - 1,
+        border: 'right',
+      };
+    }
+    return null;
+  }
+  
+  /**
+   *  Returns true if the keypress should start editing
+   */
+  export function isEditingKey(key: string): boolean {
+    if (key.length !== 1) {
+      return false;
+    }
+    const code = key.codePointAt(0) ?? 0;
+    if (code > 0 && code < 255) {
+      return true;
+    }
+    return false;
+  }
+  
+  // /  Common types
+  
+  export interface Area {
+    rowStart: number;
+    rowEnd: number;
+    columnStart: number;
+    columnEnd: number;
+  }
+  
+  interface AreaWithBorderInterface extends Area {
+    border: 'left' | 'top' | 'right' | 'bottom';
+  }
+  
+  export type AreaWithBorder = AreaWithBorderInterface | null;
+  
+  export interface Cell {
+    row: number;
+    column: number;
+  }
+  
+  export interface ScrollPosition {
+    left: number;
+    top: number;
+  }
+  
+  export interface StateSettings {
+    selectedCell: Cell;
+    selectedArea: Area;
+    scrollPosition: ScrollPosition;
+    extendToArea: AreaWithBorder;
+  }
+  
+  export type Dispatch<A> = (value: A) => void;
+  export type SetStateAction<S> = S | ((prevState: S) => S);
+  
+  export enum FocusType {
+    Cell = 'cell',
+    FormulaBar = 'formula-bar',
+  }
+  
+  /**
+   *  In Excel there are two "modes" of editing
+   *   * `init`: When you start typing in a cell. In this mode arrow keys will move away from the cell
+   *   * `edit`: If you double click on a cell or click in the cell while editing.
+   *     In this mode arrow keys will move within the cell.
+   *
+   * In a formula bar mode is always `edit`.
+   */
+  export type CellEditMode = 'init' | 'edit';
+  export interface CellEditingType {
+    /**
+     * ID of cell editing. Useful when one edit transforms into another and some code needs to run
+     * when target changes.
+     *
+     * Due to problems with focus management (see #339) it's possible to start a new cell editing
+     * without properly cleaning up previous one (lose focus in workbook, regain focus NOT in
+     * the input and then use the keyboard.
+     */
+    id: number;
+    sheet: number;
+    row: number;
+    column: number;
+    text: string;
+    base: string;
+    mode: CellEditMode;
+    focus: FocusType;
+  }
+  
+  export type NavigationKey = 'ArrowRight' | 'ArrowLeft' | 'ArrowDown' | 'ArrowUp' | 'Home' | 'End';
+  
+  export const isNavigationKey = (key: string): key is NavigationKey =>
+    ['ArrowRight', 'ArrowLeft', 'ArrowDown', 'ArrowUp', 'Home', 'End'].includes(key);
+  
+  function nameNeedsQuoting(name: string): boolean {
+    const chars = [' ', '(', ')', "'", '$', ',', ';', '-', '+', '{', '}'];
+    const l = chars.length;
+    for (let index = 0; index < l; index += 1) {
+      if (name.includes(chars[index])) {
+        return true;
+      }
+    }
+    return false;
+  }
+  
+  // FIXME: We should use the function of a similar name in the rust code.
+  export const quoteSheetName = (name: string): string => {
+    if (nameNeedsQuoting(name)) {
+      return `'${name.replace("'", "''")}'`;
+    }
+    return name;
+  };
+  
+  export function cellReprToRowColumn(cellRepr: string): { row: number; column: number } {
+    let row = 0;
+    let column = 0;
+    for (const character of cellRepr) {
+      if (Number.isNaN(Number.parseInt(character, 10))) {
+        column *= 26;
+        const characterCode = character.codePointAt(0);
+        const ACharacterCode = 'A'.codePointAt(0);
+        if (typeof characterCode === 'undefined' || typeof ACharacterCode === 'undefined') {
+          throw new TypeError('Failed to find character code');
+        }
+        const deltaCodes = characterCode - ACharacterCode;
+        if (deltaCodes < 0) {
+          throw new Error('Incorrect character');
+        }
+        column += deltaCodes + 1;
+      } else {
+        row *= 10;
+        row += Number.parseInt(character, 10);
+      }
+    }
+    return { row, column };
+  }
+  
+  export const getMessageCellText = (
+    cell: string,
+    getMessageSheetNumber: (sheet: string) => number | undefined,
+    getCellText?: (sheet: number, row: number, column: number) => string | undefined,
+  ) => {
+    const messageMatch = /^=?(?<sheet>\w+)!(?<cell>\w+)/.exec(cell);
+    if (messageMatch && messageMatch.groups) {
+      const messageSheet = getMessageSheetNumber(messageMatch.groups.sheet);
+      const dynamicIconCell = cellReprToRowColumn(messageMatch.groups.cell);
+      if (messageSheet !== undefined && getCellText) {
+        return getCellText(messageSheet, dynamicIconCell.row, dynamicIconCell.column) || '';
+      }
+    }
+    return '';
+  };
+  
+  export const getCellAddress = (selectedArea: Area, selectedCell?: Cell) => {
+    const isSingleCell =
+      selectedArea.rowStart === selectedArea.rowEnd &&
+      selectedArea.columnEnd === selectedArea.columnStart;
+  
+    return isSingleCell && selectedCell
+      ? `${columnNameFromNumber(selectedCell.column)}${selectedCell.row}`
+      : `${columnNameFromNumber(selectedArea.columnStart)}${
+          selectedArea.rowStart
+        }:${columnNameFromNumber(selectedArea.columnEnd)}${selectedArea.rowEnd}`;
+  };
+  
+  export enum Border {
+    Top = 'top',
+    Bottom = 'bottom',
+    Right = 'right',
+    Left = 'left',
+  }

webapp/src/components/borderPicker.tsx

@@ -0,0 +1,566 @@
+import React, { useRef, useState } from "react";
+import { useTranslation } from "react-i18next";
+import {
+  BorderBottomIcon,
+  BorderCenterHIcon,
+  BorderCenterVIcon,
+  BorderInnerIcon,
+  BorderLeftIcon,
+  BorderOuterIcon,
+  BorderRightIcon,
+  BorderTopIcon,
+  BorderNoneIcon,
+  BorderStyleIcon,
+} from "../icons";
+import ColorPicker from "./colorPicker";
+import Popover, { PopoverOrigin } from "@mui/material/Popover";
+import {
+  Check,
+  ChevronDown,
+  Grid2X2 as BorderAllIcon,
+  PencilLine,
+  ChevronRight,
+} from "lucide-react";
+import { styled } from "@mui/material/styles";
+import { theme } from "../theme";
+import { BorderOptions, BorderStyle, BorderType } from "@ironcalc/wasm";
+
+type BorderPickerProps = {
+  className?: string;
+  onChange: (border: BorderOptions) => void;
+  anchorEl: React.RefObject<HTMLElement>;
+  anchorOrigin?: PopoverOrigin;
+  transformOrigin?: PopoverOrigin;
+  open: boolean;
+};
+
+const BorderPicker = (properties: BorderPickerProps) => {
+  const { t } = useTranslation();
+
+  const [borderSelected, setBorderSelected] = useState(BorderType.None);
+  const [borderColor, setBorderColor] = useState("#000000");
+  const [borderStyle, setBorderStyle] = useState(BorderStyle.Thin);
+  const [colorPickerOpen, setColorPickerOpen] = useState(false);
+  const [stylePickerOpen, setStylePickerOpen] = useState(false);
+  const closePicker = (): void => {
+    properties.onChange({
+      color: borderColor,
+      style: borderStyle,
+      border: borderSelected,
+    });
+  };
+  const borderColorButton = useRef(null);
+  const borderStyleButton = useRef(null);
+  return (
+    <>
+      <StyledPopover
+        open={properties.open}
+        onClose={(): void => closePicker()}
+        anchorEl={properties.anchorEl.current}
+        anchorOrigin={
+          properties.anchorOrigin || { vertical: "bottom", horizontal: "left" }
+        }
+        transformOrigin={
+          properties.transformOrigin || { vertical: "top", horizontal: "left" }
+        }
+      >
+        <BorderPickerDialog>
+          <Borders>
+            <Line>
+              <Button
+                type="button"
+                $pressed={borderSelected === BorderType.BorderAll}
+                onClick={() => {
+                  if (borderSelected === BorderType.BorderAll) {
+                    setBorderSelected(BorderType.None);
+                  } else {
+                    setBorderSelected(BorderType.BorderAll);
+                  }
+                }}
+                disabled={false}
+                title={t("workbook.toolbar.borders_button_title")}
+              >
+                <BorderAllIcon />
+              </Button>
+              <Button
+                type="button"
+                $pressed={borderSelected === BorderType.BorderInner}
+                onClick={() => {
+                  if (borderSelected === BorderType.BorderInner) {
+                    setBorderSelected(BorderType.None);
+                  } else {
+                    setBorderSelected(BorderType.BorderInner);
+                  }
+                }}
+                disabled={false}
+                title={t("workbook.toolbar.borders_button_title")}
+              >
+                <BorderInnerIcon />
+              </Button>
+              <Button
+                type="button"
+                $pressed={borderSelected === BorderType.BorderCenterH}
+                onClick={() => {
+                  if (borderSelected === BorderType.BorderCenterH) {
+                    setBorderSelected(BorderType.None);
+                  } else {
+                    setBorderSelected(BorderType.BorderCenterH);
+                  }
+                }}
+                disabled={false}
+                title={t("workbook.toolbar.borders_button_title")}
+              >
+                <BorderCenterHIcon />
+              </Button>
+              <Button
+                type="button"
+                $pressed={borderSelected === BorderType.BorderCenterV}
+                onClick={() => {
+                  if (borderSelected === BorderType.BorderCenterV) {
+                    setBorderSelected(BorderType.None);
+                  } else {
+                    setBorderSelected(BorderType.BorderCenterV);
+                  }
+                }}
+                disabled={false}
+                title={t("workbook.toolbar.borders_button_title")}
+              >
+                <BorderCenterVIcon />
+              </Button>
+              <Button
+                type="button"
+                $pressed={borderSelected === BorderType.BorderOuter}
+                onClick={() => {
+                  if (borderSelected === BorderType.BorderOuter) {
+                    setBorderSelected(BorderType.None);
+                  } else {
+                    setBorderSelected(BorderType.BorderOuter);
+                  }
+                }}
+                disabled={false}
+                title={t("workbook.toolbar.borders_button_title")}
+              >
+                <BorderOuterIcon />
+              </Button>
+            </Line>
+            <Line>
+              <Button
+                type="button"
+                $pressed={borderSelected === BorderType.BorderNone}
+                onClick={() => {
+                  if (borderSelected === BorderType.BorderNone) {
+                    setBorderSelected(BorderType.None);
+                  } else {
+                    setBorderSelected(BorderType.BorderNone);
+                  }
+                }}
+                disabled={false}
+                title={t("workbook.toolbar.borders_button_title")}
+              >
+                <BorderNoneIcon />
+              </Button>
+              <Button
+                type="button"
+                $pressed={borderSelected === BorderType.BorderTop}
+                onClick={() => {
+                  if (borderSelected === BorderType.BorderTop) {
+                    setBorderSelected(BorderType.None);
+                  } else {
+                    setBorderSelected(BorderType.BorderTop);
+                  }
+                }}
+                disabled={false}
+                title={t("workbook.toolbar.borders_button_title")}
+              >
+                <BorderTopIcon />
+              </Button>
+              <Button
+                type="button"
+                $pressed={borderSelected === BorderType.BorderRight}
+                onClick={() => {
+                  if (borderSelected === BorderType.BorderRight) {
+                    setBorderSelected(BorderType.None);
+                  } else {
+                    setBorderSelected(BorderType.BorderRight);
+                  }
+                }}
+                disabled={false}
+                title={t("workbook.toolbar.borders_button_title")}
+              >
+                <BorderRightIcon />
+              </Button>
+              <Button
+                type="button"
+                $pressed={borderSelected === BorderType.BorderBottom}
+                onClick={() => {
+                  if (borderSelected === BorderType.BorderBottom) {
+                    setBorderSelected(BorderType.None);
+                  } else {
+                    setBorderSelected(BorderType.BorderBottom);
+                  }
+                }}
+                disabled={false}
+                title={t("workbook.toolbar.borders_button_title")}
+              >
+                <BorderBottomIcon />
+              </Button>
+              <Button
+                type="button"
+                $pressed={borderSelected === BorderType.BorderLeft}
+                onClick={() => {
+                  if (borderSelected === BorderType.BorderLeft) {
+                    setBorderSelected(BorderType.None);
+                  } else {
+                    setBorderSelected(BorderType.BorderLeft);
+                  }
+                }}
+                disabled={false}
+                title={t("workbook.toolbar.borders_button_title")}
+              >
+                <BorderLeftIcon />
+              </Button>
+            </Line>
+          </Borders>
+          <Divider />
+          <Styles>
+            <ButtonWrapper onClick={() => setColorPickerOpen(true)}>
+              <Button
+                type="button"
+                $pressed={false}
+                disabled={false}
+                ref={borderColorButton}
+                title={t("workbook.toolbar.borders_button_title")}
+              >
+                <PencilLine />
+              </Button>
+              <div style={{flexGrow:2}}>Border color</div>
+              <ChevronRightStyled />
+            </ButtonWrapper>
+            <ButtonWrapper onClick={() => setStylePickerOpen(true)} ref={borderStyleButton}>
+              <Button
+                type="button"
+                $pressed={false}
+                disabled={false}
+                title={t("workbook.toolbar.borders_button_title")}
+              >
+                <BorderStyleIcon />
+              </Button>
+              <div style={{flexGrow:2}}>Border style</div>
+              <ChevronRightStyled />
+            </ButtonWrapper>
+          </Styles>
+        </BorderPickerDialog>
+        <ColorPicker
+          color={borderColor}
+          onChange={(color): void => {
+            setBorderColor(color);
+            setColorPickerOpen(false);
+          }}
+          anchorEl={borderColorButton}
+          open={colorPickerOpen}
+        />
+        <StyledPopover
+          open={stylePickerOpen}
+          onClose={(): void => {
+            setStylePickerOpen(false);
+          }}
+          anchorEl={borderStyleButton.current}
+          anchorOrigin={{ vertical: "bottom", horizontal: "right" }}
+          transformOrigin={{ vertical: 38, horizontal: -6 }}
+        >
+          <BorderStyleDialog>
+          <LineWrapper
+              onClick={() => {
+                setBorderStyle(BorderStyle.Dashed);
+                setStylePickerOpen(false);
+              }}
+              $checked={borderStyle === BorderStyle.None}
+            >
+              <BorderDescription>None</BorderDescription>
+              <NoneLine />
+            </LineWrapper>
+            <LineWrapper
+              onClick={() => {
+                setBorderStyle(BorderStyle.Thin);
+                setStylePickerOpen(false);
+              }}
+              $checked={borderStyle === BorderStyle.Thin}
+            >
+              <BorderDescription>Thin</BorderDescription>
+              <SolidLine />
+            </LineWrapper>
+            <LineWrapper
+              onClick={() => {
+                setBorderStyle(BorderStyle.Medium);
+                setStylePickerOpen(false);
+              }}
+              $checked={borderStyle === BorderStyle.Medium}
+            >
+              <BorderDescription>Medium</BorderDescription>
+              <MediumLine />
+            </LineWrapper>
+            <LineWrapper
+              onClick={() => {
+                setBorderStyle(BorderStyle.Thick);
+                setStylePickerOpen(false);
+              }}
+              $checked={borderStyle === BorderStyle.Thick}
+            >
+              <BorderDescription>Thick</BorderDescription>
+              <ThickLine />
+            </LineWrapper>
+            <LineWrapper
+              onClick={() => {
+                setBorderStyle(BorderStyle.Dotted);
+                setStylePickerOpen(false);
+              }}
+              $checked={borderStyle === BorderStyle.Dotted}
+            >
+              <BorderDescription>Dotted</BorderDescription>
+              <DottedLine />
+            </LineWrapper>
+            <LineWrapper
+              onClick={() => {
+                setBorderStyle(BorderStyle.Dashed);
+                setStylePickerOpen(false);
+              }}
+              $checked={borderStyle === BorderStyle.Dashed}
+            >
+              <BorderDescription>Dashed</BorderDescription>
+              <DashedLine />
+            </LineWrapper>
+            <LineWrapper
+              onClick={() => {
+                setBorderStyle(BorderStyle.Dashed);
+                setStylePickerOpen(false);
+              }}
+              $checked={borderStyle === BorderStyle.Double}
+            >
+              <BorderDescription>Double</BorderDescription>
+              <DoubleLine />
+            </LineWrapper>
+          </BorderStyleDialog>
+        </StyledPopover>
+      </StyledPopover>
+    </>
+  );
+};
+
+type LineWrapperProperties = { $checked: boolean };
+const LineWrapper = styled("div")<LineWrapperProperties>`
+  display: flex;
+  flex-direction: row;
+  align-items: center;
+  background-color: ${({ $checked }): string => {
+    if ($checked) {
+      return '#EEEEEE;';
+    } else {
+      return 'inherit;';
+    }
+  }};
+  &:hover {
+    border: 1px solid #EEEEEE;
+  }
+  padding:8px;
+  cursor: pointer;
+  border-radius: 4px;
+  border: 1px solid white;
+`;
+
+const CheckIconWrapper = styled("div")`
+  width: 12px;
+`;
+
+type CheckIconProperties = { $checked: boolean };
+const CheckIcon = styled("div")<CheckIconProperties>`
+  width: 2px;
+  background-color: #EEE;
+  height: 28px;
+  visibility: ${({ $checked }): string => {
+    if ($checked) {
+      return "visible";
+    }
+    return "hidden";
+  }};
+`;
+const NoneLine = styled("div")`
+  width: 68px;
+  border-top: 1px solid #E0E0E0;
+`;
+const SolidLine = styled("div")`
+  width: 68px;
+  border-top: 1px solid #333333;
+`;
+const MediumLine = styled("div")`
+  width: 68px;
+  border-top: 2px solid #333333;
+`;
+const ThickLine = styled("div")`
+  width: 68px;
+  border-top: 3px solid #333333;
+`;
+const DashedLine = styled("div")`
+  width: 68px;
+  border-top: 1px dashed #333333;
+`;
+const DottedLine = styled("div")`
+  width: 68px;
+  border-top: 1px dotted #333333;
+`;
+const DoubleLine = styled('div')`
+  width: 68px;
+  border-top: 3px double #333333;
+`;
+
+const Divider = styled("div")`
+  display: inline-flex;
+  heigh: 1px;
+  border-bottom: 1px solid #EEE;
+  margin-left: 0px;
+  margin-right: 0px;
+`;
+
+const Borders = styled("div")`
+  display: flex;
+  flex-direction: column;
+  padding-bottom: 4px;
+`;
+
+const Styles = styled("div")`
+  display: flex;
+  flex-direction: column;
+`;
+
+const Line = styled("div")`
+  display: flex;
+  flex-direction: row;
+  align-items: center;
+`;
+
+const ButtonWrapper = styled("div")`
+  display: flex;
+  flex-direction: row;
+  align-items: center;
+  &:hover {
+    background-color: #EEE;
+    border-top-color: ${(): string => theme.palette.grey["400"]};
+  }
+  cursor: pointer;
+  padding: 8px
+`;
+
+const BorderStyleDialog = styled("div")`
+  background: ${({ theme }): string => theme.palette.background.default};
+  padding: 4px;
+  display: flex;
+  flex-direction: column;
+  align-items: center;
+`;
+
+const StyledPopover = styled(Popover)`
+  .MuiPopover-paper {
+    border-radius: 10px;
+    border: 0px solid ${({ theme }): string => theme.palette.background.default};
+    box-shadow: 1px 2px 8px rgba(139, 143, 173, 0.5);
+  }
+  .MuiPopover-padding {
+    padding: 0px;
+  }
+  .MuiList-padding {
+    padding: 0px;
+  }
+  font-family: ${({ theme }) => theme.typography.fontFamily};
+  font-size: 13px;
+`;
+
+const BorderPickerDialog = styled("div")`
+  background: ${({ theme }): string => theme.palette.background.default};
+  padding: 4px;
+  display: flex;
+  flex-direction: column;
+`;
+
+const BorderDescription = styled("div")`
+width: 70px;
+`;
+
+// type TypeButtonProperties = { $pressed: boolean; $underlinedColor?: string };
+// const Button = styled.button<TypeButtonProperties>`
+//   width: 23px;
+//   height: 23px;
+//   display: inline-flex;
+//   align-items: center;
+//   justify-content: center;
+//   font-size: 14px;
+//   border-radius: 2px;
+//   margin-right: 5px;
+//   transition: all 0.2s;
+
+//   ${({ theme, disabled, $pressed, $underlinedColor }): string => {
+//     if (disabled) {
+//       return `
+//       color: ${theme.palette.grey['600']};
+//       cursor: default;
+//     `;
+//     }
+//     return `
+//       border-top: ${$underlinedColor ? '3px solid #FFF' : 'none'};
+//       border-bottom: ${$underlinedColor ? `3px solid ${$underlinedColor}` : 'none'};
+//       color: ${theme.palette.text.primary};
+//       background-color: ${$pressed ? theme.palette.grey['600'] : '#FFF'};
+//       &:hover {
+//         background-color: ${theme.palette.grey['400']};
+//         border-top-color: ${theme.palette.grey['400']};
+//       }
+//     `;
+//   }}
+// `;
+
+type TypeButtonProperties = { $pressed: boolean; $underlinedColor?: string };
+const Button = styled("button")<TypeButtonProperties>(
+  ({ disabled, $pressed, $underlinedColor }) => {
+    let result: Record<string, any> = {
+      width: "24px",
+      height: "24px",
+      display: "inline-flex",
+      alignItems: "center",
+      justifyContent: "center",
+      // fontSize: "26px",
+      border: "0px solid #fff",
+      borderRadius: "2px",
+      marginRight: "5px",
+      transition: "all 0.2s",
+      cursor: "pointer",
+      padding: "0px",
+    };
+    if (disabled) {
+      result.color = theme.palette.grey["600"];
+      result.cursor = "default";
+    } else {
+      result.borderTop = $underlinedColor ? "3px solid #FFF" : "none";
+      result.borderBottom = $underlinedColor
+        ? `3px solid ${$underlinedColor}`
+        : "none";
+      (result.color = "#21243A"),
+        (result.backgroundColor = $pressed
+          ? theme.palette.grey["600"]
+          : "inherit");
+      result["&:hover"] = {
+        backgroundColor: "#F1F2F8",
+        borderTopColor: "#F1F2F8",
+      };
+      result["svg"] = {
+        width: "16px",
+        height: "16px",
+      };
+    }
+    return result;
+  }
+);
+
+const ChevronRightStyled = styled(ChevronRight)`
+  width: 16px;
+  height: 16px;
+`;
+
+export default BorderPicker;

webapp/src/components/colorPicker.tsx

@@ -0,0 +1,261 @@
+import styled from "@emotion/styled";
+import Popover, { PopoverOrigin } from "@mui/material/Popover";
+import React, { useEffect, useRef, useState } from "react";
+import { HexColorInput, HexColorPicker } from "react-colorful";
+import { theme } from "../theme";
+
+type ColorPickerProps = {
+  className?: string;
+  color: string;
+  onChange: (color: string) => void;
+  anchorEl: React.RefObject<HTMLElement>;
+  anchorOrigin?: PopoverOrigin;
+  transformOrigin?: PopoverOrigin;
+  open: boolean;
+};
+
+const colorPickerWidth = 240;
+const colorPickerPadding = 15;
+const colorfulHeight = 185; // 150 + 15 + 20
+
+const ColorPicker = (properties: ColorPickerProps) => {
+  const [color, setColor] = useState<string>(properties.color);
+  const recentColors = useRef<string[]>([]);
+
+  const closePicker = (newColor: string): void => {
+    const maxRecentColors = 14;
+    properties.onChange(newColor);
+    const colors = recentColors.current.filter((c) => c !== newColor);
+    recentColors.current = [newColor, ...colors].slice(0, maxRecentColors);
+  };
+
+  useEffect(() => {
+    setColor(properties.color);
+  }, [properties.color]);
+
+  const presetColors = [
+    "#FFFFFF",
+    "#1B717E",
+    "#59B9BC",
+    "#3BB68A",
+    "#8CB354",
+    "#F8CD3C",
+    "#EC5753",
+    "#A23C52",
+    "#D03627",
+    "#523E93",
+    "#3358B7",
+  ];
+
+  return (
+    <Popover
+      open={properties.open}
+      onClose={(): void => closePicker(color)}
+      anchorEl={properties.anchorEl.current}
+      anchorOrigin={
+        properties.anchorOrigin || { vertical: "bottom", horizontal: "left" }
+      }
+      transformOrigin={
+        properties.transformOrigin || { vertical: "top", horizontal: "left" }
+      }
+    >
+      <ColorPickerDialog>
+        <HexColorPicker
+          color={color}
+          onChange={(newColor): void => {
+            setColor(newColor);
+          }}
+        />
+        <ColorPickerInput>
+          <HexWrapper>
+            <HexLabel>{"Hex"}</HexLabel>
+            <HexColorInputBox>
+              <HashLabel>{"#"}</HashLabel>
+              <HexColorInput
+                color={color}
+                onChange={(newColor): void => {
+                  setColor(newColor);
+                }}
+              />
+            </HexColorInputBox>
+          </HexWrapper>
+          <Swatch $color={color} />
+        </ColorPickerInput>
+        <HorizontalDivider />
+        <ColorList>
+          {presetColors.map((presetColor) => (
+            <Button
+              key={presetColor}
+              $color={presetColor}
+              onClick={(): void => {
+                closePicker(presetColor);
+              }}
+            />
+          ))}
+        </ColorList>
+        <HorizontalDivider />
+        <RecentLabel>{"Recent"}</RecentLabel>
+        <ColorList>
+          {recentColors.current.map((recentColor) => (
+            <Button
+              key={recentColor}
+              $color={recentColor}
+              onClick={(): void => {
+                closePicker(recentColor);
+              }}
+            />
+          ))}
+        </ColorList>
+      </ColorPickerDialog>
+    </Popover>
+  );
+};
+
+const RecentLabel = styled.div`
+  font-size: 12px;
+  color: ${theme.palette.text.secondary};
+`;
+
+const ColorList = styled.div`
+  display: flex;
+  flex-wrap: wrap;
+  flex-direction: row;
+`;
+
+const Button = styled.button<{ $color: string }>`
+  width: 20px;
+  height: 20px;
+  ${({ $color }): string => {
+    if ($color.toUpperCase() === "#FFFFFF") {
+      return `border: 1px solid ${theme.palette.grey['600']};`;
+    }
+    return `border: 1px solid ${$color};`;
+  }}
+  background-color: ${({ $color }): string => {
+    return $color;
+  }};
+  box-sizing: border-box;
+  margin-top: 10px;
+  margin-right: 10px;
+  border-radius: 2px;
+`;
+
+const HorizontalDivider = styled.div`
+  height: 0px;
+  width: 100%;
+  border-top: 1px solid ${theme.palette.grey['400']};
+  margin-top: 15px;
+  margin-bottom: 5px;
+`;
+
+// const StyledPopover = styled(Popover)`
+//   .MuiPopover-paper {
+//     border-radius: 10px;
+//     border: 0px solid ${theme.palette.background.default};
+//     box-shadow: 1px 2px 8px rgba(139, 143, 173, 0.5);
+//   }
+//   .MuiPopover-padding {
+//     padding: 0px;
+//   }
+//   .MuiList-padding {
+//     padding: 0px;
+//   }
+// `;
+
+const ColorPickerDialog = styled.div`
+  background: ${theme.palette.background.default};
+  width: ${colorPickerWidth}px;
+  padding: 15px;
+  display: flex;
+  flex-direction: column;
+
+  & .react-colorful {
+    height: ${colorfulHeight}px;
+    width: ${colorPickerWidth - colorPickerPadding * 2}px;
+  }
+  & .react-colorful__saturation {
+    border-bottom: none;
+    border-radius: 5px;
+  }
+  & .react-colorful__hue {
+    height: 20px;
+    margin-top: 15px;
+    border-radius: 5px;
+  }
+  & .react-colorful__saturation-pointer {
+    width: 14px;
+    height: 14px;
+  }
+  & .react-colorful__hue-pointer {
+    width: 7px;
+    border-radius: 3px;
+  }
+`;
+
+const HashLabel = styled.div`
+  margin: auto 0px auto 10px;
+  font-size: 13px;
+  color: #7d8ec2;
+  font-family: ${theme.typography.button.fontFamily};
+`;
+
+const HexLabel = styled.div`
+  margin: auto 10px auto 0px;
+  font-size: 12px;
+  display: inline-flex;
+  font-family: ${theme.typography.button.fontFamily};
+`;
+
+const HexColorInputBox = styled.div`
+  display: inline-flex;
+  flex-grow: 1;
+  margin-right: 10px;
+  width: 140px;
+  height: 28px;
+  border: 1px solid ${theme.palette.grey['600']};
+  border-radius: 5px;
+`;
+
+const HexWrapper = styled.div`
+  display: flex;
+  flex-grow: 1;
+  & input {
+    min-width: 0px;
+    border: 0px;
+    background: ${theme.palette.background.default};
+    outline: none;
+    font-family: ${theme.typography.button.fontFamily};
+    font-size: 12px;
+    text-transform: uppercase;
+    text-align: right;
+    padding-right: 10px;
+    border-radius: 5px;
+  }
+
+  & input:focus {
+    border-color: #4298ef;
+  }
+`;
+
+const Swatch = styled.div<{ $color: string }>`
+  display: inline-flex;
+  ${({ $color }): string => {
+    if ($color.toUpperCase() === "#FFFFFF") {
+      return `border: 1px solid ${theme.palette.grey['600']};`;
+    }
+    return `border: 1px solid ${$color};`;
+  }}
+  background-color: ${({ $color }): string => $color};
+  width: 28px;
+  height: 28px;
+  border-radius: 5px;
+`;
+
+const ColorPickerInput = styled.div`
+  display: flex;
+  flex-direction: row;
+  align-items: center;
+  margin-top: 15px;
+`;
+
+export default ColorPicker;

webapp/src/components/editor/editor.tsx

@@ -0,0 +1,420 @@
+import {
+  CSSProperties,
+  useCallback,
+  useEffect,
+  useState,
+  KeyboardEvent,
+  useContext,
+} from "react";
+import { useRef } from "react";
+import EditorContext, { Area } from "./editorContext";
+import { getStringRange } from "./util";
+
+/**
+ * This is the Cell Editor for IronCalc
+ * I uses a transparent textarea and a styled mask. What you see is the HTML styled content of the mask
+ * and the caret from the textarea. The alternative would be to have a 'contenteditable' div.
+ * That turns out to be a much more difficult implementation.
+ *
+ * The editor grows horizontally with text if it fits in the screen.
+ * If it doesn't fit, it wraps and grows vertically. If it doesn't fit vertically it scrolls.
+ *
+ * Many keyboard and mouse events are handled gracefully by the textarea in full or in part.
+ * For example letter key strokes like 'q' or '1' are handled full by the textarea.
+ * Some keyboard events like "RightArrow" might need to be handled separately and let them bubble up,
+ * or might be handled by the textarea, depending on the "editor mode".
+ * Some other like "Enter" we need to intercept and change the normal behaviour.
+ */
+
+const commonCSS: CSSProperties = {
+  fontWeight: "inherit",
+  fontFamily: "inherit",
+  fontSize: "inherit",
+  position: "absolute",
+  left: 0,
+  top: 0,
+  whiteSpace: "pre",
+  width: "100%",
+  padding: 0,
+};
+
+interface Cell {
+  sheet: number;
+  row: number;
+  column: number;
+}
+
+interface EditorOptions {
+  minimalWidth: number;
+  minimalHeight: number;
+  textColor: string;
+  originalText: string;
+  getStyledText: (
+    text: string,
+    insertRangeText: string
+  ) => {
+    html: JSX.Element[];
+    isInReferenceMode: boolean;
+  };
+  onEditEnd: (text: string) => void;
+  display: boolean;
+  cell: Cell;
+  sheetNames: string[];
+}
+
+// You can either be editing a formula or content.
+// When editing content (behaviour is common to Excel and Google Sheets):
+// * If you start editing by typing you are in *accept* mode
+// * If you start editing by F2 you are in *cruise* mode
+// * If you start editing by double click you are in *cruise* mode
+// In Google Sheets "Enter" starts editing and puts you in *cruise* mode. We do not do that
+// Once you are in cruise mode it is not possible to switch to accept mode
+// The only way to go from accept mode to cruise mode is clicking in the content somewhere
+
+// When editing a formula.
+// In Google Sheets you are either in insert mode or cruise mode.
+// You can get back to accept mode if you delete the whole formula
+// In Excel you can be either in insert or accept but if you click in the formula body
+// you switch to cruise mode. Once in cruise mode you can go to insert mode by selecting a range.
+// Then you are back in accept/insert modes
+
+const Editor = (options: EditorOptions) => {
+  const {
+    minimalWidth,
+    minimalHeight,
+    textColor,
+    onEditEnd,
+    originalText,
+    display,
+    cell,
+    sheetNames,
+  } = options;
+
+  const [width, setWidth] = useState(minimalWidth);
+  const [height, setHeight] = useState(minimalHeight);
+
+  const { editorContext, setEditorContext } = useContext(EditorContext);
+
+  const setBaseText = (newText: string) => {
+    console.log('Calling setBaseText');
+    setEditorContext((c) => {
+      return {
+        ...c,
+        baseText: newText,
+      };
+    });
+  };
+
+  const insertRangeText = editorContext.insertRange
+    ? getStringRange(editorContext.insertRange, sheetNames)
+    : "";
+
+  const baseText = editorContext.baseText;
+  const text = baseText + insertRangeText;
+  console.log('baseText', baseText, 'insertRange:', insertRangeText);
+
+  const formulaRef = useRef<HTMLDivElement>(null);
+  const maskRef = useRef<HTMLDivElement>(null);
+  const textareaRef = useRef<HTMLTextAreaElement>(null);
+
+  // useEffect(() => {
+  //   setBaseText(originalText);
+  // }, [cell]);
+
+  const { html: styledFormula, isInReferenceMode } = options.getStyledText(
+    baseText,
+    insertRangeText
+  );
+
+  if (display && textareaRef.current) {
+    textareaRef.current.focus();
+  }
+
+  useEffect(() => {
+    if (formulaRef.current) {
+      const scrollWidth = formulaRef.current.scrollWidth;
+      if (scrollWidth > width) {
+        setWidth(scrollWidth);
+      } else if (scrollWidth <= minimalWidth) {
+        setWidth(minimalWidth);
+      }
+      const scrollHeight = formulaRef.current.scrollHeight;
+      if (scrollHeight > height) {
+        setHeight(scrollHeight);
+      }
+    }
+  }, [text]);
+
+  useEffect(() => {
+    if (isInReferenceMode) {
+      setEditorContext((c) => {
+        return {
+          ...c,
+          mode: "insert",
+        };
+      });
+    } else {
+      setEditorContext((c) => {
+        return {
+          ...c,
+          mode: "cruise",
+          insertRange: null,
+        };
+      });
+    }
+  }, [isInReferenceMode]);
+
+  useEffect(() => {
+    if (display && textareaRef.current) {
+      textareaRef.current.focus();
+    }
+  }, [display]);
+
+  console.log("Ok, this is running", text, editorContext.id);
+
+  const onKeyDown = useCallback(
+    (event: KeyboardEvent) => {
+      const { key, shiftKey, altKey } = event;
+      const textarea = textareaRef.current;
+      const mode = editorContext.mode;
+      if (!textarea) {
+        return;
+      }
+      switch (key) {
+        case "Enter": {
+          if (altKey) {
+            // new line
+            const start = textarea.selectionStart;
+            const end = textarea.selectionEnd;
+            const newText = text.slice(0, start) + "\n" + text.slice(end);
+            setBaseText(newText);
+            setTimeout(() => {
+              textarea.setSelectionRange(start + 1, start + 1);
+            }, 1);
+            event.stopPropagation();
+            event.preventDefault();
+            return;
+          } else {
+            // end edit
+            onEditEnd(text);
+            textarea.blur();
+            // event bubbles up
+            return;
+          }
+          break;
+        }
+        case "Escape": {
+          setBaseText(originalText);
+          textarea.blur();
+          event.stopPropagation();
+          event.preventDefault();
+          break;
+        }
+        case "ArrowLeft": {
+          if (mode === "accept") {
+            onEditEnd(text);
+            textarea.blur();
+            // event bubbles up
+            return;
+          } else if (mode == "insert") {
+            if (shiftKey) {
+              // increase the inserted range to the left
+              if (!editorContext.insertRange) {
+                setEditorContext((c) => {
+                  return {
+                    ...c,
+                    insertRange: {
+                      absoluteColumnEnd: false,
+                      absoluteColumnStart: false,
+                      absoluteRowEnd: false,
+                      absoluteRowStart: false,
+                      sheet: cell.sheet,
+                      rowStart: cell.row,
+                      rowEnd: cell.row,
+                      columnStart: cell.column,
+                      columnEnd: cell.column,
+                    },
+                  };
+                });
+              } else {
+                // const r = insertRage;
+                // r.columnStart = Math.max(r.columnStart - 1, 1);
+                // setInsertRange(r);
+              }
+            } else {
+              // move inserted cell to the left
+              if (!editorContext.insertRange) {
+                setEditorContext((c) => {
+                  return {
+                    ...c,
+                    insertRange: {
+                      absoluteColumnEnd: false,
+                      absoluteColumnStart: false,
+                      absoluteRowEnd: false,
+                      absoluteRowStart: false,
+                      sheet: cell.sheet,
+                      rowStart: cell.row,
+                      rowEnd: cell.row,
+                      columnStart: cell.column,
+                      columnEnd: cell.column,
+                    },
+                  };
+                });
+              } else {
+                setEditorContext((c) => {
+                  const range = c.insertRange as Area;
+                  const row = range.rowStart;
+                  let column = range.columnStart - 1;
+                  if (column < 1) {
+                    column = 1;
+                  }
+                  return {
+                    ...c,
+                    insertRange: {
+                      absoluteColumnEnd: false,
+                      absoluteColumnStart: false,
+                      absoluteRowEnd: false,
+                      absoluteRowStart: false,
+                      sheet: range.sheet,
+                      rowStart: row,
+                      rowEnd: row,
+                      columnStart: column,
+                      columnEnd: column,
+                    },
+                  };
+                });
+              }
+            }
+            event.stopPropagation();
+            event.preventDefault();
+            return;
+          }
+          // We don't do anything in "cruise mode" and rely on the textarea default behaviour
+          break;
+        }
+        case "ArrowDown": {
+          if (mode === "accept") {
+            onEditEnd(text);
+            textarea.blur();
+          }
+          break;
+        }
+        case "ArrowRight": {
+          if (mode === "accept") {
+            onEditEnd(text);
+            textarea.blur();
+          }
+          break;
+        }
+        case "ArrowUp": {
+          if (mode === "accept") {
+            onEditEnd(text);
+            textarea.blur();
+          }
+          break;
+        }
+        case "Tab": {
+          onEditEnd(text);
+          textarea.blur();
+          // event bubbles up
+        }
+      }
+      if (editorContext.mode === "insert") {
+        setBaseText(text);
+        setEditorContext((context) => {
+          return {
+            ...context,
+            mode: "cruise",
+            insertRange: null,
+          };
+        });
+      }
+    },
+    [text, editorContext]
+  );
+
+  return (
+    <div
+      style={{
+        position: "relative",
+        width,
+        height,
+        overflow: "hidden",
+        background: "#FFF",
+        display: display ? "block" : "none",
+      }}
+      onClick={(_event) => {
+        console.log("Click on wrapper");
+      }}
+      onPointerDown={() => {
+        console.log("On pointer down wrapper");
+      }}
+    >
+      <div
+        ref={maskRef}
+        style={{
+          ...commonCSS,
+          textAlign: "left",
+          pointerEvents: "none",
+          height,
+        }}
+        onClick={(_event) => {
+          console.log("Click on mask");
+        }}
+        onPointerDown={() => {
+          console.log("On pointer down mask");
+        }}
+      >
+        <div ref={formulaRef}>{styledFormula}</div>
+      </div>
+      <textarea
+        ref={textareaRef}
+        rows={1}
+        style={{
+          ...commonCSS,
+          color: "transparent",
+          backgroundColor: "transparent",
+          caretColor: textColor,
+          outline: "none",
+          resize: "none",
+          border: "none",
+          height,
+        }}
+        spellCheck="false"
+        value={text}
+        onChange={(event) => {
+          console.log("onChange", event.target.value);
+          setBaseText(event.target.value);
+        }}
+        onScroll={() => {
+          if (maskRef.current && textareaRef.current) {
+            maskRef.current.style.left = `-${textareaRef.current.scrollLeft}px`;
+            maskRef.current.style.top = `-${textareaRef.current.scrollTop}px`;
+          }
+        }}
+        onKeyDown={onKeyDown}
+        onClick={(event) => {
+          console.log("Setting mode");
+          setEditorContext((c) => {
+            return {
+              ...c,
+              mode: "cruise",
+            };
+          });
+          console.log("here");
+          // if (display) {
+          event.stopPropagation();
+          // }
+        }}
+        onBlur={() => {
+          // on blur
+        }}
+        onPointerDown={(event) => {
+          event.stopPropagation();
+        }}
+      ></textarea>
+    </div>
+  );
+};
+
+export default Editor;

webapp/src/components/editor/editorContext.ts

@@ -0,0 +1,45 @@
+import { Dispatch, SetStateAction, createContext } from "react";
+
+export interface Area {
+  sheet: number | null;
+  rowStart: number;
+  rowEnd: number;
+  columnStart: number;
+  columnEnd: number;
+  absoluteRowStart: boolean;
+  absoluteRowEnd: boolean;
+  absoluteColumnStart: boolean;
+  absoluteColumnEnd: boolean;
+}
+
+// Arrow keys behave in different ways depending on the "edit mode":
+// * In _cruise_ mode arrowy keys navigate within the editor
+// * In _accept_ mode pressing an arrow key will end editing
+// * In _insert_ mode arrow keys will change the selected range
+export type EditorMode = "cruise" | "accept" | "insert";
+
+export interface EditorState {
+  mode: EditorMode;
+  insertRange: null | Area;
+  baseText: string;
+  id: number;
+}
+
+interface EditorContextType {
+  editorContext: EditorState;
+  setEditorContext: Dispatch<
+    SetStateAction<{ mode: EditorMode; insertRange: null | Area }>
+  >;
+}
+
+const EditorContext = createContext<EditorContextType>({
+  editorContext: {
+    mode: "accept",
+    insertRange: null,
+    baseText: '',
+    id: Math.floor(Math.random()*1000),
+  },
+  setEditorContext: () => {},
+});
+
+export default EditorContext;

webapp/src/components/editor/index.tsx

@@ -0,0 +1,3 @@
+export { default } from './editor';
+
+

webapp/src/components/editor/tokenTypes.ts

@@ -0,0 +1,92 @@
+type ErrorType =
+  | 'REF'
+  | 'NAME'
+  | 'VALUE'
+  | 'DIV'
+  | 'NA'
+  | 'NUM'
+  | 'ERROR'
+  | 'NIMPL'
+  | 'SPILL'
+  | 'CALC'
+  | 'CIRC';
+
+type OpCompareType =
+  | 'LessThan'
+  | 'GreaterThan'
+  | 'Equal'
+  | 'LessOrEqualThan'
+  | 'GreaterOrEqualThan'
+  | 'NonEqual';
+
+type OpSumType = 'Add' | 'Minus';
+
+type OpProductType = 'Times' | 'Divide';
+
+interface ReferenceType {
+  sheet: string | null;
+  row: number;
+  column: number;
+  absolute_column: boolean;
+  absolute_row: boolean;
+}
+
+interface ParsedReferenceType {
+  column: number;
+  row: number;
+  absolute_column: boolean;
+  absolute_row: boolean;
+}
+
+interface Reference {
+  Reference: ReferenceType;
+}
+
+interface Range {
+  Range: {
+    sheet: string | null;
+    left: ParsedReferenceType;
+    right: ParsedReferenceType;
+  };
+}
+
+export type TokenType =
+  | 'Illegal'
+  | 'Eof'
+  | { Ident: string }
+  | { String: string }
+  | { Boolean: boolean }
+  | { Number: number }
+  | { ERROR: ErrorType }
+  | { COMPARE: OpCompareType }
+  | { SUM: OpSumType }
+  | { PRODUCT: OpProductType }
+  | 'POWER'
+  | 'LPAREN'
+  | 'RPAREN'
+  | 'COLON'
+  | 'SEMICOLON'
+  | 'LBRACKET'
+  | 'RBRACKET'
+  | 'LBRACE'
+  | 'RBRACE'
+  | 'COMMA'
+  | 'BANG'
+  | 'PERCENT'
+  | 'AND'
+  | Reference
+  | Range;
+
+export interface MarkedToken {
+  token: TokenType;
+  start: number;
+  end: number;
+}
+
+export function tokenIsReferenceType(token: TokenType): token is Reference {
+  return typeof token === 'object' && 'Reference' in token;
+}
+
+export function tokenIsRangeType(token: TokenType): token is Range {
+  return typeof token === 'object' && 'Range' in token;
+}

webapp/src/components/editor/useEditorKeyDown.ts

@@ -0,0 +1,108 @@
+import { useCallback, KeyboardEvent } from "react";
+import { WorkbookState } from "../workbookState";
+import { Model } from "@ironcalc/wasm";
+
+interface Options {
+  // onMoveCaretToStart: () => void;
+  // onMoveCaretToEnd: () => void;
+  // onEditEnd: (delta: { deltaRow: number; deltaColumn: number }) => void;
+  // onEditEscape: () => void;
+  // onReferenceCycle: () => void;
+  // text: string;
+  // setText: (text: string) => void;
+  model: Model;
+  state: WorkbookState;
+  refresh: () => void;
+}
+
+const useEditorKeydown = (
+  options: Options
+): {
+  onKeyDown: (event: KeyboardEvent) => void;
+} => {
+  const { state, model } = options;
+  const onKeyDown = useCallback((event: KeyboardEvent) => {
+    const { key, shiftKey } = event;
+    const { mode, text } = state.getEditor() ?? { mode: "init", text: "" };
+    switch (key) {
+      case "Enter":
+        // options.onEditEnd({ deltaRow: 1, deltaColumn: 0 });
+        const { row, column } = state.getSelectedCell();
+        const sheet = state.getSelectedSheet();
+        model.setUserInput(sheet, row, column, text);
+        state.selectCell({ row: row + 1, column });
+        event.preventDefault();
+        event.stopPropagation();
+        options.refresh();
+        break;
+      // case 'ArrowUp': {
+      //   if (mode === 'init') {
+      //     options.onEditEnd({ deltaRow: -1, deltaColumn: 0 });
+      //   } else {
+      //     options.onMoveCaretToStart();
+      //   }
+      //   event.preventDefault();
+      //   event.stopPropagation();
+      //   break;
+      // }
+      // case 'ArrowDown': {
+      //   if (mode === 'init') {
+      //     options.onEditEnd({ deltaRow: 1, deltaColumn: 0 });
+      //   } else {
+      //     options.onMoveCaretToEnd();
+      //   }
+      //   event.preventDefault();
+      //   event.stopPropagation();
+      //   break;
+      // }
+      // case 'Tab': {
+      //   if (event.shiftKey) {
+      //     options.onEditEnd({ deltaRow: 0, deltaColumn: -1 });
+      //   } else {
+      //     options.onEditEnd({ deltaRow: 0, deltaColumn: 1 });
+      //   }
+      //   event.preventDefault();
+      //   event.stopPropagation();
+
+      //   break;
+      // }
+      // case 'Escape': {
+      //   options.onEditEscape();
+      //   event.preventDefault();
+      //   event.stopPropagation();
+
+      //   break;
+      // }
+      // case 'ArrowLeft': {
+      //   if (mode === 'init') {
+      //     options.onEditEnd({ deltaRow: 0, deltaColumn: -1 });
+      //     event.preventDefault();
+      //     event.stopPropagation();
+      //   }
+
+      //   break;
+      // }
+      // case 'ArrowRight': {
+      //   if (mode === 'init') {
+      //     options.onEditEnd({ deltaRow: 0, deltaColumn: 1 });
+      //     event.preventDefault();
+      //     event.stopPropagation();
+      //   }
+
+      //   break;
+      // }
+      // case 'F4': {
+      //   options.onReferenceCycle();
+      //   event.preventDefault();
+      //   event.stopPropagation();
+
+      //   break;
+      // }
+      default:
+        break;
+    }
+  }, [model, state]);
+  return { onKeyDown };
+};
+
+export default useEditorKeydown;

webapp/src/components/editor/util.tsx

@@ -0,0 +1,334 @@
+import { getTokens } from "@ironcalc/wasm";
+import { tokenIsRangeType, tokenIsReferenceType } from "./tokenTypes";
+import { Area } from "./editorContext";
+
+const letters = [
+  "A",
+  "B",
+  "C",
+  "D",
+  "E",
+  "F",
+  "G",
+  "H",
+  "I",
+  "J",
+  "K",
+  "L",
+  "M",
+  "N",
+  "O",
+  "P",
+  "Q",
+  "R",
+  "S",
+  "T",
+  "U",
+  "V",
+  "W",
+  "X",
+  "Y",
+  "Z",
+];
+interface Reference {
+  row: number;
+  column: number;
+  absoluteRow: boolean;
+  absoluteColumn: boolean;
+}
+
+export function referenceToString(rf: Reference): string {
+  const absC = rf.absoluteColumn ? "$" : "";
+  const absR = rf.absoluteRow ? "$" : "";
+  return absC + columnNameFromNumber(rf.column) + absR + rf.row;
+}
+
+export function columnNameFromNumber(column: number): string {
+  let columnName = "";
+  let index = column;
+  while (index > 0) {
+    columnName = `${letters[(index - 1) % 26]}${columnName}`;
+    index = Math.floor((index - 1) / 26);
+  }
+  return columnName;
+}
+
+export function columnNumberFromName(columnName: string): number {
+  let column = 0;
+  for (const character of columnName) {
+    const index = (character.codePointAt(0) ?? 0) - 64;
+    column = column * 26 + index;
+  }
+  return column;
+}
+interface Range {
+  sheet: number | null;
+  rowStart: number;
+  rowEnd: number;
+  columnStart: number;
+  columnEnd: number;
+  absoluteRowStart: boolean;
+  absoluteRowEnd: boolean;
+  absoluteColumnStart: boolean;
+  absoluteColumnEnd: boolean;
+}
+
+export function getStringRange(range: Range, sheetNames: string[]) {
+  const name = range.sheet ? `${sheetNames[range.sheet]}!` : "";
+  const left = referenceToString({
+    row: range.rowStart,
+    column: range.columnStart,
+    absoluteRow: range.absoluteRowStart,
+    absoluteColumn: range.absoluteColumnStart,
+  });
+  if (
+    range.rowStart === range.rowEnd &&
+    range.columnStart === range.columnEnd
+  ) {
+    return `${name}${left}`;
+  }
+  const right = referenceToString({
+    row: range.rowEnd,
+    column: range.columnEnd,
+    absoluteRow: range.absoluteRowEnd,
+    absoluteColumn: range.absoluteColumnEnd,
+  });
+  return `${name}${left}:${right}`;
+}
+
+interface ActiveRange {
+  sheet: number;
+  rowStart: number;
+  rowEnd: number;
+  columnStart: number;
+  columnEnd: number;
+  color: string;
+}
+
+// IronCalc Color Palette
+export function getColor(index: number, alpha = 1): string {
+  const colors = [
+    {
+      name: "Cyan",
+      rgba: [89, 185, 188, 1],
+      hex: "#59B9BC",
+    },
+    {
+      name: "Flamingo",
+      rgba: [236, 87, 83, 1],
+      hex: "#EC5753",
+    },
+    {
+      hex: "#3358B7",
+      rgba: [51, 88, 183, 1],
+      name: "Blue",
+    },
+    {
+      hex: "#F8CD3C",
+      rgba: [248, 205, 60, 1],
+      name: "Yellow",
+    },
+    {
+      hex: "#3BB68A",
+      rgba: [59, 182, 138, 1],
+      name: "Emerald",
+    },
+    {
+      hex: "#523E93",
+      rgba: [82, 62, 147, 1],
+      name: "Violet",
+    },
+    {
+      hex: "#A23C52",
+      rgba: [162, 60, 82, 1],
+      name: "Burgundy",
+    },
+    {
+      hex: "#8CB354",
+      rgba: [162, 60, 82, 1],
+      name: "Wasabi",
+    },
+    {
+      hex: "#D03627",
+      rgba: [208, 54, 39, 1],
+      name: "Red",
+    },
+    {
+      hex: "#1B717E",
+      rgba: [27, 113, 126, 1],
+      name: "Teal",
+    },
+  ];
+  if (alpha === 1) {
+    return colors[index % 10].hex;
+  }
+  const { rgba } = colors[index % 10];
+  return `rgba(${rgba[0]}, ${rgba[1]}, ${rgba[2]}, ${alpha})`;
+}
+
+/**
+ *
+ * This function get a formula like `=A1*SUM(B5:C6)` and transforms it to:
+ *
+ * `<span>=</span><span>A1</span><span>SUM</span><span>(</span><span>B5:C6</span><span>)</span>`
+ *
+ * While also returning the set of ranges [A1, B5:C6] with specific color assignments for each range
+ */
+export function getFormulaHTML(
+  text: string,
+  sheet: number,
+  sheetList: string[],
+  insertRage: Area | null,
+  insertRangeText: string
+): {
+  html: JSX.Element[];
+  activeRanges: ActiveRange[];
+  isInReferenceMode: boolean;
+} {
+  let html = [];
+  const activeRanges: ActiveRange[] = [];
+  let colorCount = 0;
+  if (text.startsWith("=")) {
+    const formula = text.slice(1);
+
+    const tokens = getTokens(formula);
+    const tokenCount = tokens.length;
+    const usedColors: Record<string, string> = {};
+    for (let index = 0; index < tokenCount; index += 1) {
+      const { token, start, end } = tokens[index];
+      if (tokenIsReferenceType(token)) {
+        const { sheet: refSheet, row, column } = token.Reference;
+        const sheetIndex = refSheet ? sheetList.indexOf(refSheet) : sheet;
+        const key = `${sheetIndex}-${row}-${column}`;
+        let color = usedColors[key];
+        if (!color) {
+          color = getColor(colorCount);
+          usedColors[key] = color;
+          colorCount += 1;
+        }
+        html.push(
+          <span key={index} style={{ color }}>
+            {formula.slice(start, end)}
+          </span>
+        );
+        activeRanges.push({
+          sheet: sheetIndex,
+          rowStart: row,
+          columnStart: column,
+          rowEnd: row,
+          columnEnd: column,
+          color,
+        });
+      } else if (tokenIsRangeType(token)) {
+        let {
+          sheet: refSheet,
+          left: { row: rowStart, column: columnStart },
+          right: { row: rowEnd, column: columnEnd },
+        } = token.Range;
+        const sheetIndex = refSheet ? sheetList.indexOf(refSheet) : sheet;
+
+        const key = `${sheetIndex}-${rowStart}-${columnStart}:${rowEnd}-${columnEnd}`;
+        let color = usedColors[key];
+        if (!color) {
+          color = getColor(colorCount);
+          usedColors[key] = color;
+          colorCount += 1;
+        }
+
+        if (rowStart > rowEnd) {
+          [rowStart, rowEnd] = [rowEnd, rowStart];
+        }
+        if (columnStart > columnEnd) {
+          [columnStart, columnEnd] = [columnEnd, columnStart];
+        }
+        html.push(
+          <span key={index} style={{ color }}>
+            {formula.slice(start, end)}
+          </span>
+        );
+        colorCount += 1;
+
+        activeRanges.push({
+          sheet: sheetIndex,
+          rowStart,
+          columnStart,
+          rowEnd,
+          columnEnd,
+          color,
+        });
+      } else {
+        html.push(<span key={index}>{formula.slice(start, end)}</span>);
+      }
+    }
+    if (tokenCount > 0) {
+      const lastToken = tokens[tokens.length - 1];
+      if (lastToken.end < text.length - 1) {
+        html.push(
+          <span key="rest">{text.slice(lastToken.end + 1, text.length)}</span>
+        );
+      }
+    }
+    html = [<span key="equals">=</span>].concat(html);
+  } else {
+    html = [<span key="single">{text}</span>];
+  }
+  const isRefMode = isInReferenceMode(text, text.length);
+  if (isRefMode) {
+    if (insertRage) {
+      const color = getColor(colorCount);
+      activeRanges.push({
+        sheet: insertRage.sheet || sheet,
+        rowStart: insertRage.rowStart,
+        rowEnd: insertRage.rowEnd,
+        columnStart: insertRage.columnStart,
+        columnEnd: insertRage.columnEnd,
+        color,
+      });
+      colorCount += 1;
+      html.push(
+        <span key="insert-range" style={{ color, textDecoration: "underline" }}>
+          {insertRangeText}
+        </span>
+      );
+    } else {
+      html.push(
+        <span
+          key="insert-cue"
+          style={{
+            border: "1px solid #d5d5d5",
+            height: "2px",
+            width: "7px",
+            borderTop: 0,
+            display: "inline-block",
+          }}
+        />
+      );
+    }
+  }
+  // We add a clickable element that spans the rest of the available space
+  html.push(<span key="spacer" style={{ flexGrow: 1 }}></span>);
+  return { html, activeRanges, isInReferenceMode: isRefMode };
+}
+
+export function isInReferenceMode(text: string, cursor: number): boolean {
+  // FIXME
+  // This is a gross oversimplification
+  // Returns true if both are true:
+  // 1. Cursor is at the end
+  // 2. Last char is one of [',', '(', '+', '*', '-', '/', '<', '>', '=', '&']
+  // This has many false positives like '="1+' and also likely some false negatives
+  // The right way of doing this is to have a partial parse of the formula tree
+  // and check if the next token could be a reference
+  if (!text.startsWith("=")) {
+    return false;
+  }
+  if (text === "=") {
+    return true;
+  }
+  const l = text.length;
+  const chars = [",", "(", "+", "*", "-", "/", "<", ">", "=", "&"];
+  if (cursor === l && chars.includes(text[l - 1])) {
+    return true;
+  }
+  return false;
+}