Merged r1559:r1587 from source:/sandbox/crschmidt/noprototype. OpenLayers is now Prototype-free(tm).

git-svn-id: http://svn.openlayers.org/trunk/openlayers@1588 dc9f47b5-9b13-0410-9fdd-eb0c1a62fdaf

lib/OpenLayers/Util.js

@@ -7,6 +7,34 @@
  */
 OpenLayers.Util = new Object();
 
+/* from Prototype.js */
+if ($ == null) {
+    var $ = function () {
+      var elements = new Array();
+
+      for (var i = 0; i < arguments.length; i++) {
+        var element = arguments[i];
+        if (typeof element == 'string')
+          element = document.getElementById(element);
+
+        if (arguments.length == 1)
+          return element;
+
+        elements.push(element);
+      }
+
+      return elements;
+    }
+} 
+
+/* from Prototype.js */
+OpenLayers.Util.extend = function(destination, source) {
+    for (property in source) {
+      destination[property] = source[property];
+    }
+    return destination;
+};
+
 /**
  * @param {String} id
  * @param {OpenLayers.Pixel} px
@@ -105,9 +133,9 @@ OpenLayers.Util.createImage = function(id, px, sz, imgURL, position, border,
 
     if(delayDisplay) {
         image.style.display = "none";
-        Event.observe(image, "load", 
+        OpenLayers.Event.observe(image, "load", 
                       OpenLayers.Util.onImageLoad.bindAsEventListener(image));
-        Event.observe(image, "error", 
+        OpenLayers.Event.observe(image, "error", 
                       OpenLayers.Util.onImageLoadError.bindAsEventListener(image));
         
     }
@@ -244,9 +272,9 @@ OpenLayers.Util.createAlphaImageDiv = function(id, px, sz, imgURL,
 
     if (delayDisplay) {
         img.style.display = "none";
-        Event.observe(img, "load",
+        OpenLayers.Event.observe(img, "load",
                       OpenLayers.Util.onImageLoad.bindAsEventListener(div));
-        Event.observe(img, "error",
+        OpenLayers.Event.observe(img, "error",
                       OpenLayers.Util.onImageLoadError.bindAsEventListener(div));
     }
 
@@ -275,7 +303,7 @@ OpenLayers.Util.upperCaseObject = function (object) {
 };
 
 /** Takes a hashtable and copies any keys that don't exist from
-*   another hashtable, by analogy with Object.extend() from
+*   another hashtable, by analogy with OpenLayers.Util.extend() from
 *   Prototype.js.
 *
 * @param {Object} to
@@ -318,6 +346,21 @@ OpenLayers.Util.getImagesLocation = function() {
     return OpenLayers._getScriptLocation() + "img/";
 };
 
+/* Originally from Prototype */
+
+OpenLayers.Util.Try = function() {
+    var returnValue;
+
+    for (var i = 0; i < arguments.length; i++) {
+      var lambda = arguments[i];
+      try {
+        returnValue = lambda();
+        break;
+      } catch (e) {}
+    }
+
+    return returnValue;
+}
 
 
 /** These could/should be made namespace aware?
@@ -328,7 +371,7 @@ OpenLayers.Util.getImagesLocation = function() {
 * @return {Array}
 */
 OpenLayers.Util.getNodes=function(p, tagName) {
-    var nodes = Try.these(
+    var nodes = OpenLayers.Util.Try(
         function () {
             return OpenLayers.Util._getNodes(p.documentElement.childNodes,
                                             tagName);
@@ -392,7 +435,7 @@ OpenLayers.Util.getTagText = function (parent, item, index) {
  */
 OpenLayers.Util.getXmlNodeValue = function(node) {
     var val = null;
-    Try.these( 
+    OpenLayers.Util.Try( 
         function() {
             val = node.text;
             if (!val)
@@ -573,3 +616,26 @@ OpenLayers.Util.safeStopPropagation = function(evt) {
     } 
     evt.cancelBubble = true;    
 };
+
+OpenLayers.Util.pagePosition = function(forElement) {
+    var valueT = 0, valueL = 0;
+
+    var element = forElement;
+    do {
+      valueT += element.offsetTop  || 0;
+      valueL += element.offsetLeft || 0;
+
+      // Safari fix
+      if (element.offsetParent==document.body)
+        if (OpenLayers.Element.getStyle(element,'position')=='absolute') break;
+
+    } while (element = element.offsetParent);
+
+    element = forElement;
+    do {
+      valueT -= element.scrollTop  || 0;
+      valueL -= element.scrollLeft || 0;
+    } while (element = element.parentNode);
+
+    return [valueL, valueT];
+};