add composite input to spreadsheets

cell/view/CellEditorView.js

@@ -125,6 +125,8 @@
 		this.cursorStyle = undefined;
 		this.cursorTID = undefined;
 		this.cursorPos = 0;
+		this.beginCompositePos = -1;
+		this.compositeLength = 0;
 		this.topLineIndex = 0;
 		this.m_oFont = oFont;
 		this.fmgrGraphics = fmgrGraphics;
@@ -2688,6 +2690,38 @@
 		return {x: x, y: y};
 	};
 
+	CellEditor.prototype.Begin_CompositeInput = function () {
+		if (this.selectionBegin === this.selectionEnd) {
+			this.beginCompositePos = this.cursorPos;
+			this.compositeLength = 0;
+		} else {
+			this.beginCompositePos = this.selectionBegin;
+			this.compositeLength = this.selectionEnd - this.selectionBegin;
+		}
+	};
+	CellEditor.prototype.Replace_CompositeText = function (arrCharCodes) {
+		if (!this.isOpened) {
+			return;
+		}
+
+		var code, codePt, newText = '';
+		for (var i = 0; i < arrCharCodes.length; ++i) {
+			code = arrCharCodes[i];
+			if (code < 0x10000) {
+				newText += String.fromCharCode(code);
+			} else {
+				codePt = code - 0x10000;
+				newText += String.fromCharCode(0xD800 + (codePt >> 10), 0xDC00 + (codePt & 0x3FF));
+			}
+		}
+		this.replaceText(this.beginCompositePos, this.compositeLength, newText);
+		this.compositeLength = newText.length;
+	};
+	CellEditor.prototype.End_CompositeInput = function () {
+		this.beginCompositePos = -1;
+		this.compositeLength = 0;
+	};
+
 
 	//------------------------------------------------------------export---------------------------------------------------
 	window['AscCommonExcel'] = window['AscCommonExcel'] || {};

cell/view/WorkbookView.js

@@ -176,7 +176,7 @@
     this.fontRenderingMode = null;
     this.lockDraw = false;		// Lock отрисовки на некоторое время
 
-	this.isCellEditMode = false;
+    this.isCellEditMode = false;
 
     this.formulasList = [];		// Список всех формул
     this.lastFormulaPos = -1; 		// Последняя позиция формулы
@@ -572,7 +572,22 @@
         self.cellEditor._onWindowKeyUp(event);
       }
     };
-    
+    this.Api.Begin_CompositeInput = function () {
+      self.cellEditor.Begin_CompositeInput();
+      if (!self.isCellEditMode) {
+        self._onEditCell(false, true, undefined, true, function() {
+          self.cellEditor.Begin_CompositeInput();
+        });
+      }
+    };
+    this.Api.Replace_CompositeText = function (arrCharCodes) {
+      if (self.isCellEditMode) {
+        self.cellEditor.Replace_CompositeText(arrCharCodes);
+      }
+    };
+    this.Api.End_CompositeInput = function() {
+      self.cellEditor.End_CompositeInput();
+    };
     AscCommon.InitBrowserInputContext(this.Api, "id_target_cursor");
 
     this.wsViewHandlers = new AscCommonExcel.asc_CHandlersList(/*handlers*/{