Implement float cell type

Author: martinRenou

js/src/sheet.ts

@@ -274,33 +274,45 @@ let put_values2d = function(grid, values) {
 });
 
 
-// Register `int` cell type
-let int_editor = Handsontable.editors.TextEditor.prototype.extend();
+// Register `int` and `float` cell types
+class NumberEditor extends Handsontable.editors.TextEditor {
+    getValue() {
+        return Number.parseFloat(this.TEXTAREA.value);
+    }
+};
 
 function int_renderer(hotInstance, td, row, column, prop, value, cellProperties) {
     const numeric_format = cellProperties.numericFormat || 'd';
     td.innerHTML = d3.format(numeric_format)(value);
 }
 
 function int_validator(query, callback) {
-    let is_integer = false;
-    if (typeof query == 'number') {
-        is_integer = Number.isInteger(query);
-    } else {
-        is_integer = Number.isInteger(parseFloat(query));
-    }
-
-    console.log('is_integer?', query, is_integer);
-    callback(is_integer);
+    callback(Number.isInteger(query));
 }
 
 (Handsontable.cellTypes as any).registerCellType('int', {
-    editor: int_editor,
+    editor: NumberEditor,
     renderer: int_renderer,
     validator: int_validator,
     allowInvalid: false
 });
 
+function float_renderer(hotInstance, td, row, column, prop, value, cellProperties) {
+    const numeric_format = cellProperties.numericFormat || '.2f';
+    td.innerHTML = d3.format(numeric_format)(value);
+}
+
+function float_validator(query, callback) {
+    callback(Number.isInteger(query));
+}
+
+(Handsontable.cellTypes as any).registerCellType('float', {
+    editor: NumberEditor,
+    renderer: float_renderer,
+    validator: float_validator,
+    allowInvalid: false
+});
+
 let SheetView = widgets.DOMWidgetView.extend({
     render: function() {
         // this.widget_view_promises = {}