From 88fd67cfb21bf9b51d2d070de059dc4bbbab63dd Mon Sep 17 00:00:00 2001
From: =?utf8?q?Aleksander=20=C5=81ukasz?=
 <aleksander.lukasz@nowoczesnapolska.org.pl>
Date: Thu, 6 Mar 2014 14:38:11 +0100
Subject: [PATCH 1/1] refactoring: moving create(wlxmlNode) to constructor,
 caching element instance

---
 .../modules/documentCanvas/canvas/canvas.js   | 16 ++--
 .../documentCanvas/canvas/documentElement.js  | 83 ++++++++-----------
 2 files changed, 44 insertions(+), 55 deletions(-)

diff --git a/src/editor/modules/documentCanvas/canvas/canvas.js b/src/editor/modules/documentCanvas/canvas/canvas.js
index 94ad763..f29f99f 100644
--- a/src/editor/modules/documentCanvas/canvas/canvas.js
+++ b/src/editor/modules/documentCanvas/canvas/canvas.js
@@ -73,7 +73,7 @@ $.extend(Canvas.prototype, {
 
     createElement: function(wlxmlNode) {
         var Factory = wlxmlNode.nodeType === Node.TEXT_NODE ? documentElement.DocumentTextElement : documentElement.DocumentNodeElement;
-        return Factory.create(wlxmlNode, this);
+        return new Factory(wlxmlNode, this);
     },
 
     getDocumentElement: function(htmlElement) {
@@ -83,11 +83,16 @@ $.extend(Canvas.prototype, {
         }
         var $element = $(htmlElement);
         if(htmlElement.nodeType === Node.ELEMENT_NODE && $element.attr('document-node-element') !== undefined) {
-            return new documentElement.DocumentNodeElement(htmlElement, this);
+            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 new documentElement.DocumentTextElement(htmlElement, this);
+            return $element.data('canvas-element');
         }
     },
 
@@ -101,8 +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() {
diff --git a/src/editor/modules/documentCanvas/canvas/documentElement.js b/src/editor/modules/documentCanvas/canvas/documentElement.js
index 60e179d..02c6e19 100644
--- a/src/editor/modules/documentCanvas/canvas/documentElement.js
+++ b/src/editor/modules/documentCanvas/canvas/documentElement.js
@@ -10,17 +10,18 @@ define([
 
 
 // DocumentElement represents a text or an element node from WLXML document rendered inside Canvas
-var DocumentElement = function(htmlElement, canvas) {
+var DocumentElement = function(wlxmlNode, canvas) {
     if(arguments.length === 0) {
         return;
     }
+    this.wlxmlNode = wlxmlNode;
     this.canvas = canvas;
-    this._setupDOMHandler(htmlElement);
 };
 
 $.extend(DocumentElement.prototype, {
     _setupDOMHandler: function(htmlElement) {
         this.$element = $(htmlElement);
+        this.$element.data('canvas-element', this);
     },
     bound: function() {
         return $.contains(document.documentElement, this.dom()[0]);
@@ -115,38 +116,33 @@ $.extend(DocumentElement.prototype, {
 
 
 // DocumentNodeElement represents an element node from WLXML document rendered inside Canvas
-var DocumentNodeElement = function(htmlElement, canvas) {
-    DocumentElement.call(this, htmlElement, canvas);
-};
-
-$.extend(DocumentNodeElement, {
-    create: function(wlxmlNode, canvas) {
-        var dom = $('<div>')
-                .attr('document-node-element', ''),
-            widgetsContainer = $('<div>')
-                .addClass('canvas-widgets')
-                .attr('contenteditable', false),
-            container = $('<div>')
-                .attr('document-element-content', '');
-        
-        dom.append(widgetsContainer, container);
-        // Make sure widgets aren't navigable with arrow keys
-        widgetsContainer.find('*').add(widgetsContainer).attr('tabindex', -1);
-
-        var element = canvas.getDocumentElement(dom[0]);
+var DocumentNodeElement = function(wlxmlNode, canvas) {
+    DocumentElement.call(this, wlxmlNode, canvas);
+
+    var dom = $('<div>')
+            .attr('document-node-element', ''),
+        widgetsContainer = $('<div>')
+            .addClass('canvas-widgets')
+            .attr('contenteditable', false),
+        container = $('<div>')
+            .attr('document-element-content', '');
+    
+    dom.append(widgetsContainer, container);
+    // Make sure widgets aren't navigable with arrow keys
+    widgetsContainer.find('*').add(widgetsContainer).attr('tabindex', -1);
+    this._setupDOMHandler(dom);
+    
 
-        element.data('wlxmlNode', wlxmlNode);
-        wlxmlNode.setData('canvasElement', element);
+    this.data('wlxmlNode', wlxmlNode);
+    wlxmlNode.setData('canvasElement', this);
 
-        element.setWlxml({tag: wlxmlNode.getTagName(), klass: wlxmlNode.getClass()});
+    this.setWlxml({tag: wlxmlNode.getTagName(), klass: wlxmlNode.getClass()});
 
-        wlxmlNode.contents().forEach(function(node) {
-            container.append(canvas.createElement(node).dom());
-        }.bind(this));
+    wlxmlNode.contents().forEach(function(node) {
+        container.append(canvas.createElement(node).dom());
+    }.bind(this));
+};
 
-        return element;
-    }
-});
 
 var manipulate = function(e, params, action) {
     var element;
@@ -291,20 +287,16 @@ $.extend(DocumentNodeElement.prototype, {
 
 
 // DocumentNodeElement represents a text node from WLXML document rendered inside Canvas
-var DocumentTextElement = function(htmlElement, canvas) {
-    DocumentElement.call(this, htmlElement, canvas);
+var DocumentTextElement = function(wlxmlTextNode, canvas) {
+    DocumentElement.call(this, wlxmlTextNode, canvas);
+    var dom = $('<div>')
+        .attr('document-text-element', '')
+        .text(wlxmlTextNode.getText() || utils.unicode.ZWS);
+    this._setupDOMHandler(dom);
+    this.data('wlxmlNode', wlxmlTextNode);
 };
 
 $.extend(DocumentTextElement, {
-    create: function(wlxmlTextNode, canvas) {
-        var dom = $('<div>')
-            .attr('document-text-element', '')
-            .text(wlxmlTextNode.getText() || utils.unicode.ZWS),
-        element = canvas.getDocumentElement(dom[0]);
-        element.data('wlxmlNode', wlxmlTextNode);
-        return element;
-    },
-
     isContentContainer: function(htmlElement) {
         return htmlElement.nodeType === Node.TEXT_NODE && $(htmlElement).parent().is('[document-text-element]');
     }
@@ -313,15 +305,6 @@ $.extend(DocumentTextElement, {
 DocumentTextElement.prototype = new DocumentElement();
 
 $.extend(DocumentTextElement.prototype, {
-    _setupDOMHandler: function(htmlElement) {
-        var $element = $(htmlElement);
-        if(htmlElement.nodeType === Node.TEXT_NODE) {
-            this.$element = $element.parent();
-        }
-        else {
-            this.$element = $element;
-        }
-    },
     detach: function() {
         this.dom().detach();
         this.canvas = null;
-- 
2.20.1