fixing bugs

web2d/src/main/javascript/peer/svg/ElementPeer.js

@@ -36,7 +36,7 @@ web2d.peer.svg.ElementPeer.prototype.setChildren = function(children)
 web2d.peer.svg.ElementPeer.prototype.getChildren = function()
 {
     var result = this._children;
-    if (!result)
+    if (!core.Utils.isDefined(result))
     {
         result = [];
         this._children = result;
@@ -270,7 +270,7 @@ web2d.peer.svg.ElementPeer.prototype.updateStrokeStyle = function()
 web2d.peer.svg.ElementPeer.prototype.attachChangeEventListener = function(type, listener)
 {
     var listeners = this.getChangeEventListeners(type);
-    if (!listener)
+    if (!core.Utils.isDefined(listener))
     {
         throw "Listener can not be null";
     }
@@ -280,7 +280,7 @@ web2d.peer.svg.ElementPeer.prototype.attachChangeEventListener = function(type,
 web2d.peer.svg.ElementPeer.prototype.getChangeEventListeners = function(type)
 {
     var listeners = this._changeListeners[type];
-    if (!listeners)
+    if (!core.Utils.isDefined(listeners))
     {
         listeners = [];
         this._changeListeners[type] = listeners;

web2d/src/main/javascript/peer/svg/RectPeer.js

@@ -53,7 +53,7 @@ web2d.peer.svg.RectPeer.prototype.setSize = function(width, height)
     web2d.peer.svg.RectPeer.superClass.setSize.call(this, width, height);
 
     var min = width < height?width:height;
-    if (this._arc)
+    if (core.Utils.isDefined(this._arc))
     {
         // Transform percentages to SVG format.
         var arc = (min / 2) * this._arc;

web2d/src/main/javascript/peer/svg/TextPeer.js

@@ -45,7 +45,7 @@ web2d.peer.svg.TextPeer.prototype.setText = function(text)
 {
     text = core.Utils.escapeInvalidTags(text);
     var child = this._native.firstChild;
-    if (child)
+    if (core.Utils.isDefined(child))
     {
         this._native.removeChild(child);
     }
@@ -63,7 +63,7 @@ web2d.peer.svg.TextPeer.prototype.setPosition = function(x, y)
 {
     this._position = {x:x, y:y};
     var height = this._font.getSize();
-    if(this._parent && this._native.getBBox)
+    if(core.Utils.isDefined(this._parent) && core.Utils.isDefined(this._native.getBBox))
         height = this.getHeight();
     var size = parseInt(height);
     this._native.setAttribute('y', y+size*3/4);

web2d/src/main/javascript/peer/utils/EventUtils.js

@@ -21,7 +21,7 @@ web2d.peer.utils.EventUtils =
     broadcastChangeEvent:function (elementPeer, type)
     {
         var listeners = elementPeer.getChangeEventListeners(type);
-        if (listeners)
+        if (core.Utils.isDefined(listeners))
         {
             for (var i = 0; i < listeners.length; i++)
             {