editor: Handling backspace/delete on the text boundries

[fnpeditor.git] / src / editor / modules / documentCanvas / canvas / keyboard.js

diff --git a/src/editor/modules/documentCanvas/canvas/keyboard.js b/src/editor/modules/documentCanvas/canvas/keyboard.js
index 0b58443..65f8f6b 100644 (file)
--- a/src/editor/modules/documentCanvas/canvas/keyboard.js
+++ b/src/editor/modules/documentCanvas/canvas/keyboard.js
@@ -50,11 +50,13 @@ handlers.push({key: KEYS.ENTER,
         if(Object.keys(cursor.getPosition()).length === 0) {
             var currentElement = canvas.getCurrentNodeElement();
             if(currentElement) {
+                canvas.wlxmlDocument.startTransaction();
                 added = currentElement.data('wlxmlNode').after({
-                    tag: currentElement.getWlxmlTag() || 'div',
+                    tagName: currentElement.getWlxmlTag() || 'div',
                     attrs: {'class': currentElement.getWlxmlClass() || 'p'}
                 });
                 added.append({text:''});
+                canvas.wlxmlDocument.endTransaction();
                 canvas.setCurrentElement(utils.findCanvasElement(added), {caretTo: 'start'});
             }
             return;
@@ -65,10 +67,13 @@ handlers.push({key: KEYS.ENTER,
                 if(element instanceof documentElement.DocumentTextElement) {
                     element = element.parent();
                 }
+
+                canvas.wlxmlDocument.startTransaction();
                 added = element.data('wlxmlNode').after(
                     {tagName: element.getWlxmlTag() || 'div', attrs: {'class': element.getWlxmlClass() || 'p'}}
                 );
                 added.append({text: ''});
+                canvas.wlxmlDocument.endTransaction();
                 canvas.setCurrentElement(utils.findCanvasElement(added), {caretTo: 'start'});
 
             } else {
@@ -99,7 +104,7 @@ handlers.push({key: KEYS.ENTER,
                 var result = position.element.data('wlxmlNode').breakContent({offset: position.offset}),
                     goto, gotoOptions;
                 if(result.emptyText) {
-                    goto = result.createdEmpty;
+                    goto = result.emptyText;
                     gotoOptions = {};
                 } else {
                     goto = result.second;
@@ -134,18 +139,24 @@ handlers.push({keys: [KEYS.ARROW_UP, KEYS.ARROW_DOWN, KEYS.ARROW_LEFT, KEYS.ARRO
             caretTo = false;
         if(!element) {
             // Chrome hack
-            var direction;
-            if(event.which === KEYS.ARROW_LEFT  || event.which === KEYS.ARROW_UP) {
-                direction = 'above';
-                caretTo = 'end';
-            } else {
-                direction = 'below';
-                caretTo = 'start';
+
+            var moves = [{direction: 'above', caretTo: 'end'}, {direction: 'below', caretTo: 'start'}];
+            if(event.which === KEYS.ARROW_RIGHT  || event.which === KEYS.ARROW_DOWN) {
+                moves.reverse();
             }
-            /* globals window */
-            element = canvas.getDocumentElement(utils.nearestInDocumentOrder('[document-text-element]:visible', direction, window.getSelection().focusNode));
+            moves.some(function(move) {
+                /* globals window */
+                var targetNode = utils.nearestInDocumentOrder('[document-text-element]:visible', move.direction, window.getSelection().focusNode);
+                if(targetNode) {
+                    element = canvas.getDocumentElement(targetNode);
+                    caretTo = move.caretTo;
+                    return true; // break
+                }
+            });
+        }
+        if(element) {
+            canvas.setCurrentElement(element, {caretTo: caretTo});
         }
-        canvas.setCurrentElement(element, {caretTo: caretTo});
     }
 });
 
@@ -169,7 +180,9 @@ handlers.push({keys: [KEYS.BACKSPACE, KEYS.DELETE],
     keydown: function(event, canvas) {
         var cursor = canvas.getCursor(),
             position = canvas.getCursor().getPosition(),
-            element = position.element;
+            element = position.element,
+            node = element.data('wlxmlNode'),
+            goto;
 
         if(cursor.isSelecting() && !cursor.isSelectingWithinElement()) {
             event.preventDefault();
@@ -185,25 +198,25 @@ handlers.push({keys: [KEYS.BACKSPACE, KEYS.DELETE],
             return element.getText().length === 1 || selectsWholeTextElement(cursor);
         };
 
+        canvas.wlxmlDocument.startTransaction();
+        
+        var direction = 'above',
+            caretTo = 'end';
+            
+        if(event.which === KEYS.DELETE) {
+            direction = 'below';
+            caretTo = 'start';
+        }
+
         if(willDeleteWholeText()) {
             event.preventDefault();
-            element.setText('');
+            node.setText('');
         }
         else if(element.isEmpty()) {
-
-            var direction = 'above',
-                caretTo = 'end';
-                
-            if(event.which === KEYS.DELETE) {
-                direction = 'below';
-                caretTo = 'start';
-            }
-
             event.preventDefault();
 
             var parent = element.parent(),
-                grandParent = parent ? parent.parent() : null,
-                goto;
+                grandParent = parent ? parent.parent() : null;
             if(parent.children().length === 1 && parent.children()[0].sameNode(element)) {
                 if(grandParent && grandParent.children().length === 1) {
                     goto = grandParent.data('wlxmlNode').append({text: ''});
@@ -219,9 +232,17 @@ handlers.push({keys: [KEYS.BACKSPACE, KEYS.DELETE],
             canvas.publisher('contentChanged');
         }
         else if(cursorAtOperationEdge) {
-            // todo
+            if(direction === 'below') {
+                element = element.getNearestTextElement(direction);
+            }
+            if(element) {
+                goto = element.data('wlxmlNode').mergeContentUp();
+                canvas.setCurrentElement(goto.node, {caretTo: goto.offset});
+            }
             event.preventDefault();
         }
+        canvas.wlxmlDocument.endTransaction();
+
     }
 });