editor: inform user about errors that occured during document transaction

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

diff --git a/src/editor/modules/documentCanvas/canvas/canvas.js b/src/editor/modules/documentCanvas/canvas/canvas.js
index 428cedc..476a95b 100644 (file)
--- a/src/editor/modules/documentCanvas/canvas/canvas.js
+++ b/src/editor/modules/documentCanvas/canvas/canvas.js
@@ -2,15 +2,17 @@ define([
 'libs/jquery',
 'libs/underscore',
 'libs/backbone',
+'fnpjs/logging/logging',
 'modules/documentCanvas/canvas/documentElement',
 'modules/documentCanvas/canvas/keyboard',
 'modules/documentCanvas/canvas/utils',
 'modules/documentCanvas/canvas/wlxmlListener'
-], function($, _, Backbone, documentElement, keyboard, utils, wlxmlListener) {
+], function($, _, Backbone, logging, documentElement, keyboard, utils, wlxmlListener) {
     
 'use strict';
 /* global document:false, window:false, Node:false */
 
+var logger = logging.getLogger('canvas');
 
 var TextHandler = function(canvas) {this.canvas = canvas; this.buffer = null;};
 $.extend(TextHandler.prototype, {
@@ -69,6 +71,31 @@ $.extend(Canvas.prototype, {
         this.reloadRoot();
     },
 
+    createElement: function(wlxmlNode) {
+        var Factory = wlxmlNode.nodeType === Node.TEXT_NODE ? documentElement.DocumentTextElement : documentElement.DocumentNodeElement;
+        return new Factory(wlxmlNode, this);
+    },
+
+    getDocumentElement: function(htmlElement) {
+        /* globals HTMLElement, Text */
+        if(!htmlElement || !(htmlElement instanceof HTMLElement || htmlElement instanceof Text)) {
+            return null;
+        }
+        var $element = $(htmlElement);
+        if(htmlElement.nodeType === Node.ELEMENT_NODE && $element.attr('document-node-element') !== undefined) {
+            return $element.data('canvas-element');
+        }
+
+        if(htmlElement.nodeType === Node.TEXT_NODE && $element.parent().attr('document-text-element') !== undefined) {
+            $element = $element.parent();
+        }
+
+        if($element.attr('document-text-element') !== undefined || (htmlElement.nodeType === Node.TEXT_NODE && $element.parent().attr('document-text-element') !== undefined)) {
+            //return DocumentTextElement.fromHTMLElement(htmlElement, canvas);
+            return $element.data('canvas-element');
+        }
+    },
+
     reloadRoot: function() {
         var canvasDOM = this.generateCanvasDOM(this.wlxmlDocument.root);
         //var canvasDOM = this.wlxmlDocument.root.getData('canvasElement') ? this.wlxmlDocument.root.getData('canvasElement').dom() : this.generateCanvasDOM(this.wlxmlDocument.root);
@@ -79,8 +106,9 @@ $.extend(Canvas.prototype, {
     },
 
     generateCanvasDOM: function(wlxmlNode) {
-        var element = documentElement.DocumentNodeElement.create(wlxmlNode, this);
-        return element.dom();
+        //var element = new documentElement.DocumentNodeElement(wlxmlNode, this);
+        //return element.dom();
+        return this.createElement(wlxmlNode).dom();
     },
 
     setupEventHandling: function() {
@@ -89,13 +117,20 @@ $.extend(Canvas.prototype, {
             keyboard.handleKey(e, this);
         }.bind(this));
 
+        var mouseDown;
+        this.wrapper.on('mousedown', '[document-node-element], [document-text-element]', function(e) {
+            mouseDown = e.target;
+        });
+
         this.wrapper.on('click', '[document-node-element], [document-text-element]', function(e) {
             e.stopPropagation();
             if(e.originalEvent.detail === 3) {
                 e.preventDefault();
                 canvas._moveCaretToTextElement(canvas.getDocumentElement(e.currentTarget), 'whole');
             } else {
-                canvas.setCurrentElement(canvas.getDocumentElement(e.currentTarget), {caretTo: false});
+                if(mouseDown === e.target) {
+                    canvas.setCurrentElement(canvas.getDocumentElement(e.currentTarget), {caretTo: false});
+                }
             }
         });
 
@@ -136,15 +171,14 @@ $.extend(Canvas.prototype, {
                         canvas._moveCaretToTextElement(canvas.getDocumentElement(mutation.target), 'end');
                     }
                     observer.observe(canvas.wrapper[0], config);
-                    canvas.publisher('contentChanged');
 
                     var textElement = canvas.getDocumentElement(mutation.target),
                         toSet = mutation.target.data !== utils.unicode.ZWS ? mutation.target.data : '';
 
                     //textElement.data('wlxmlNode').setText(toSet);
                     //textElement.data('wlxmlNode').document.transform('setText', {node: textElement.data('wlxmlNode'), text: toSet});
-                    if(textElement.data('wlxmlNode').getText() !== toSet) {
-                        canvas.textHandler.handle(textElement.data('wlxmlNode'), toSet);
+                    if(textElement.wlxmlNode.getText() !== toSet) {
+                        canvas.textHandler.handle(textElement.wlxmlNode, toSet);
                     }
                 }
             });
@@ -191,7 +225,7 @@ $.extend(Canvas.prototype, {
         if(this.d === null) {
             return null;
         }
-        return documentElement.DocumentNodeElement.fromHTMLElement(this.d.get(0), this); //{wlxmlTag: this.d.prop('tagName')};
+        return this.getDocumentElement(this.d[0]);
     },
 
     toggleElementHighlight: function(node, toggle) {
@@ -199,36 +233,39 @@ $.extend(Canvas.prototype, {
         element.toggleHighlight(toggle);
     },
 
-    createNodeElement: function(params) {
-        return documentElement.DocumentNodeElement.create(params, this);
-    },
-
-    getDocumentElement: function(from) {
-        /* globals HTMLElement, Text */
-        if(from instanceof HTMLElement || from instanceof Text) {
-           return documentElement.DocumentElement.fromHTMLElement(from, this);
-        }
-    },
     getCursor: function() {
         return new Cursor(this);
     },
 
     
     getCurrentNodeElement: function() {
-        return this.getDocumentElement(this.wrapper.find('.current-node-element').parent()[0]);
+        var htmlElement = this.wrapper.find('.current-node-element').parent()[0];
+        if(htmlElement) {
+            return this.getDocumentElement(htmlElement);
+        }
     },
 
     getCurrentTextElement: function() {
-        return this.getDocumentElement(this.wrapper.find('.current-text-element')[0]);
+        var htmlElement = this.wrapper.find('.current-text-element')[0];
+        if(htmlElement) {
+            return this.getDocumentElement(htmlElement);
+        }
     },
 
-
+    contains: function(element) {
+        return element.dom().parents().index(this.wrapper) !== -1;
+    },
 
     setCurrentElement: function(element, params) {
         if(!(element instanceof documentElement.DocumentElement)) {
             element = utils.findCanvasElement(element);
         }
 
+        if(!element || !this.contains(element)) {
+            logger.warning('Cannot set current element: element doesn\'t exist on canvas');
+            return;
+        }
+
         params = _.extend({caretTo: 'end'}, params);
         var findFirstDirectTextChild = function(e, nodeToLand) {
             var byBrowser = this.getCursor().getPosition().element;
@@ -250,7 +287,6 @@ $.extend(Canvas.prototype, {
             } else {
                 this.wrapper.find('.current-node-element').removeClass('current-node-element');
                 element._container().addClass('current-node-element');
-                this.publisher('currentElementChanged', element);
             }
         }.bind(this);
 
@@ -271,7 +307,7 @@ $.extend(Canvas.prototype, {
                 this._moveCaretToTextElement(textElementToLand, params.caretTo); // as method on element?
             }
             if(!(textElementToLand.sameNode(currentTextElement))) {
-                this.publisher('currentTextElementSet', textElementToLand.data('wlxmlNode'));
+                this.publisher('currentTextElementSet', textElementToLand.wlxmlNode);
             }
         } else {
             document.getSelection().removeAllRanges();
@@ -280,7 +316,7 @@ $.extend(Canvas.prototype, {
         if(!(currentNodeElement && currentNodeElement.sameNode(nodeElementToLand))) {
             _markAsCurrent(nodeElementToLand);
 
-            this.publisher('currentNodeElementSet', nodeElementToLand.data('wlxmlNode'));
+            this.publisher('currentNodeElementSet', nodeElementToLand.wlxmlNode);
         }
     },