editor: canvas - support NullElements - elements that are not inserted into canvas

[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 ff2b31e..f7edfa5 100644 (file)
--- a/src/editor/modules/documentCanvas/canvas/canvas.js
+++ b/src/editor/modules/documentCanvas/canvas/canvas.js
@@ -9,7 +9,8 @@ define([
 'modules/documentCanvas/canvas/wlxmlListener',
 'modules/documentCanvas/canvas/elementsRegister',
 'modules/documentCanvas/canvas/genericElement',
-], function($, _, Backbone, logging, documentElement, keyboard, utils, wlxmlListener, ElementsRegister, genericElement) {
+'modules/documentCanvas/canvas/nullElement',
+], function($, _, Backbone, logging, documentElement, keyboard, utils, wlxmlListener, ElementsRegister, genericElement, nullElement) {
     
 'use strict';
 /* global document:false, window:false, Node:false, gettext */
@@ -58,7 +59,7 @@ $.extend(TextHandler.prototype, {
 
 
 var Canvas = function(wlxmlDocument, elements) {
-    this.elementsRegister = new ElementsRegister(documentElement.DocumentNodeElement);
+    this.elementsRegister = new ElementsRegister(documentElement.DocumentNodeElement, nullElement);
 
     elements = [
         {tag: 'section', klass: null, prototype: genericElement},
@@ -208,8 +209,12 @@ $.extend(Canvas.prototype, Backbone.Events, {
         observer.observe(this.wrapper[0], config);
 
 
-        this.wrapper.on('mouseover', '[document-node-element], [document-text-element]', function(e) {
-            var el = canvas.getDocumentElement(e.currentTarget);
+        var hoverHandler = function(e) {
+            var el = canvas.getDocumentElement(e.currentTarget),
+                expose = {
+                    mouseover: true,
+                    mouseout: false
+                };
             if(!el) {
                 return;
             }
@@ -217,19 +222,11 @@ $.extend(Canvas.prototype, Backbone.Events, {
             if(el instanceof documentElement.DocumentTextElement) {
                 el = el.parent();
             }
-            el.toggleLabel(true);
-        });
-        this.wrapper.on('mouseout', '[document-node-element], [document-text-element]', function(e) {
-            var el = canvas.getDocumentElement(e.currentTarget);
-            if(!el) {
-                return;
-            }
-            e.stopPropagation();
-            if(el instanceof documentElement.DocumentTextElement) {
-                el = el.parent();
-            }
-            el.toggleLabel(false);
-        });
+            el.updateState({exposed:expose[e.type]});
+        };
+
+        this.wrapper.on('mouseover', '[document-node-element], [document-text-element]', hoverHandler);
+        this.wrapper.on('mouseout', '[document-node-element], [document-text-element]', hoverHandler);
 
         this.eventBus.on('elementToggled', function(toggle, element) {
             if(!toggle) {
@@ -248,7 +245,7 @@ $.extend(Canvas.prototype, Backbone.Events, {
 
     toggleElementHighlight: function(node, toggle) {
         var element = utils.getElementForNode(node);
-        element.toggleHighlight(toggle);
+        element.updateState({exposed: toggle});
     },
 
     getCursor: function() {
@@ -257,10 +254,7 @@ $.extend(Canvas.prototype, Backbone.Events, {
 
     
     getCurrentNodeElement: function() {
-        var htmlElement = this.wrapper.find('.current-node-element').parent()[0];
-        if(htmlElement) {
-            return this.getDocumentElement(htmlElement);
-        }
+        return this.currentNodeElement;
     },
 
     getCurrentTextElement: function() {
@@ -285,17 +279,38 @@ $.extend(Canvas.prototype, Backbone.Events, {
     },
 
     contains: function(element) {
-        return element.dom.parents().index(this.wrapper) !== -1;
+        return element && element.dom && element.dom.parents().index(this.wrapper) !== -1;
     },
 
     triggerSelectionChanged: function() {
         this.trigger('selectionChanged', this.getSelection());
+        var s = this.getSelection(),
+            f = s.toDocumentFragment();
+        if(f && f instanceof f.RangeFragment) {
+            if(this.currentNodeElement) {
+                this.currentNodeElement.updateState({active: false});
+                this.currentNodeElement = null;
+            }
+        }
     },
 
     getSelection: function() {
         return new Selection(this);
     },
 
+    select: function(fragment) {
+        if(fragment instanceof this.wlxmlDocument.RangeFragment) {
+            this.setCurrentElement(fragment.endNode, {caretTo: fragment.endOffset});
+        } else if(fragment instanceof this.wlxmlDocument.NodeFragment) {
+            var params = {
+                caretTo: fragment instanceof this.wlxmlDocument.CaretFragment ? fragment.offset : 'start'
+            };
+            this.setCurrentElement(fragment.node, params);
+        } else {
+            logger.debug('Fragment not supported');
+        }
+    },
+
     setCurrentElement: function(element, params) {
         if(!element) {
             logger.debug('Invalid element passed to setCurrentElement: ' + element);
@@ -324,8 +339,11 @@ $.extend(Canvas.prototype, Backbone.Events, {
                 this.wrapper.find('.current-text-element').removeClass('current-text-element');
                 element.dom.addClass('current-text-element');
             } else {
-                this.wrapper.find('.current-node-element').removeClass('current-node-element');
-                element._container().addClass('current-node-element');
+                if(this.currentNodeElement) {
+                    this.currentNodeElement.updateState({active: false});
+                }
+                element.updateState({active: true});
+                this.currentNodeElement = element;
             }
         }.bind(this);