Re: [qooxdoo-devel] Implementation of selectNodes and selectSingleNodes for gecko/mozilla browsers with XPathEvaluator (renderer branch)

[Sebastian Werner]

Dietrich Streifert schrieb:
Here is a better patch which does not acces the text property/attribute 
of nodes but implements getter methods for the text property:

This is a diff against QxXmlExtras.js in cvs renderer branch.

Is this patch usable to get committed to the qooxdoo cvs? What is the 
copyright stuff of this lines?

Sebastian



Dietrich Streifert schrieb:

Hello List!


if someone needs this: Gecko/Mozilla has no implementation of the 
simple to handle xpath node selection methods selectNodes and 
selectSingleNode (which are InternetExplorerer proprietary) for 
Element and Document object. Here is the Implementation built as patch 
for QxXmlExtras.


A little tutorial for the usage is:


selectNodes: http://www.webreference.com/js/tips/020309.html
selectSingleNode: http://www.webreference.com/js/tips/020310.html


------------------------------------------------------------------------

--- source/script/binding/QxXmlExtras.js.orig   2005-11-29 09:12:47.100690000 
+0100
+++ source/script/binding/QxXmlExtras.js        2005-11-29 18:44:50.191349000 
+0100
@@ -105,3 +105,60 @@
 
   throw new Error("This browser does not support xml dom creation.");
 };
+
+// Implementation of selectNodes() and selectSingleNode()
+// for Gecko/Mozilla browsers
+if (window.XPathEvaluator) {
+
+  var xpath = new XPathEvaluator();
+
+  // if (!Element.prototype.selectSingleNode) {
+    Element.prototype.selectSingleNode = function (path) {
+      return xpath.evaluate(path, this, this.ownerDocument._ns, 
XPathResult.FIRST_ORDERED_NODE_TYPE, null).singleNodeValue;
+    };
+  //}
+  
+  // if (!Element.prototype.selectNodes) {
+    Element.prototype.selectNodes = function (path) {
+      var result = xpath.evaluate(path, this, this.ownerDocument._ns, 
XPathResult.ORDERED_NODE_SNAPSHOT_TYPE, null);
+      var i, nodes = [];
+  
+      for (i=0; i<result.snapshotLength; i++) {
+        nodes[i] = result.snapshotItem(i);
+      };
+  
+      return nodes;
+    };
+  // }
+  
+  // if (!Document.prototype.selectSingleNode) {
+    Document.prototype.selectSingleNode = function (path) {
+      return xpath.evaluate(path, this, this._ns, 
XPathResult.FIRST_ORDERED_NODE_TYPE, null).singleNodeValue;
+    };
+  // }
+  
+  // if (!Document.prototype.selectNodes) {
+    Document.prototype.selectNodes = function (path) {
+      var result = xpath.evaluate(path, this, this._ns, 
XPathResult.ORDERED_NODE_SNAPSHOT_TYPE, null);
+      var i, nodes = [];
+
+      for (i=0; i<result.snapshotLength; i++) {
+        nodes[i] = result.snapshotItem(i);
+      };
+      
+      return nodes;
+    };
+  // }
+
+  Element.prototype.text getter = function(){
+               var i, a=[], nodes = this.childNodes, length = nodes.length;
+               for (i=0; i<length; i++) {
+          a[i] = nodes[i].text
+        };
+               return a.join("");
+       };
+
+  Attr.prototype.text getter = function(){return this.nodeValue};
+  Text.prototype.text getter = function(){return this.nodeValue};
+}
+



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