autocomplete/js/xmlextras.js

   1 //<script>\r
   2 //////////////////\r
   3 // Helper Stuff //\r
   4 //////////////////\r
   5 \r
   6 // used to find the Automation server name\r
   7 function getDomDocumentPrefix() {\r
   8         if (getDomDocumentPrefix.prefix)\r
   9                 return getDomDocumentPrefix.prefix;\r
  10         \r
  11         var prefixes = ["MSXML2", "Microsoft", "MSXML", "MSXML3"];\r
  12         var o;\r
  13         for (var i = 0; i < prefixes.length; i++) {\r
  14                 try {\r
  15                         // try to create the objects\r
  16                         o = new ActiveXObject(prefixes[i] + ".DomDocument");\r
  17                         return getDomDocumentPrefix.prefix = prefixes[i];\r
  18                 }\r
  19                 catch (ex) {};\r
  20         }\r
  21         \r
  22         throw new Error("Could not find an installed XML parser");\r
  23 }\r
  24 \r
  25 function getXmlHttpPrefix() {\r
  26         if (getXmlHttpPrefix.prefix)\r
  27                 return getXmlHttpPrefix.prefix;\r
  28         \r
  29         var prefixes = ["MSXML2", "Microsoft", "MSXML", "MSXML3"];\r
  30         var o;\r
  31         for (var i = 0; i < prefixes.length; i++) {\r
  32                 try {\r
  33                         // try to create the objects\r
  34                         o = new ActiveXObject(prefixes[i] + ".XmlHttp");\r
  35                         return getXmlHttpPrefix.prefix = prefixes[i];\r
  36                 }\r
  37                 catch (ex) {};\r
  38         }\r
  39         \r
  40         throw new Error("Could not find an installed XML parser");\r
  41 }\r
  42 \r
  43 //////////////////////////\r
  44 // Start the Real stuff //\r
  45 //////////////////////////\r
  46 \r
  47 \r
  48 // XmlHttp factory\r
  49 function XmlHttp() {}\r
  50 \r
  51 XmlHttp.create = function () {\r
  52         try {\r
  53                 if (window.XMLHttpRequest) {\r
  54                         var req = new XMLHttpRequest();\r
  55                         \r
  56                         // some versions of Moz do not support the readyState property\r
  57                         // and the onreadystate event so we patch it!\r
  58                         if (req.readyState == null) {\r
  59                                 req.readyState = 1;\r
  60                                 req.addEventListener("load", function () {\r
  61                                         req.readyState = 4;\r
  62                                         if (typeof req.onreadystatechange == "function")\r
  63                                                 req.onreadystatechange();\r
  64                                 }, false);\r
  65                         }\r
  66                         \r
  67                         return req;\r
  68                 }\r
  69                 if (window.ActiveXObject) {\r
  70                         return new ActiveXObject(getXmlHttpPrefix() + ".XmlHttp");\r
  71                 }\r
  72         }\r
  73         catch (ex) {}\r
  74         // fell through\r
  75         throw new Error("Your browser does not support XmlHttp objects");\r
  76 };\r
  77 \r
  78 // XmlDocument factory\r
  79 function XmlDocument() {}\r
  80 \r
  81 XmlDocument.create = function () {\r
  82         try {\r
  83                 // DOM2\r
  84                 if (document.implementation && document.implementation.createDocument) {\r
  85                         var doc = document.implementation.createDocument("", "", null);\r
  86                         \r
  87                         // some versions of Moz do not support the readyState property\r
  88                         // and the onreadystate event so we patch it!\r
  89                         if (doc.readyState == null) {\r
  90                                 doc.readyState = 1;\r
  91                                 doc.addEventListener("load", function () {\r
  92                                         doc.readyState = 4;\r
  93                                         if (typeof doc.onreadystatechange == "function")\r
  94                                                 doc.onreadystatechange();\r
  95                                 }, false);\r
  96                         }\r
  97                         \r
  98                         return doc;\r
  99                 }\r
 100                 if (window.ActiveXObject)\r
 101                         return new ActiveXObject(getDomDocumentPrefix() + ".DomDocument");\r
 102         }\r
 103         catch (ex) {}\r
 104         throw new Error("Your browser does not support XmlDocument objects");\r
 105 };\r
 106 \r
 107 // Create the loadXML method and xml getter for Mozilla\r
 108 if (window.DOMParser &&\r
 109         window.XMLSerializer &&\r
 110         window.Node && Node.prototype && Node.prototype.__defineGetter__) {\r
 111 \r
 112         // XMLDocument did not extend the Document interface in some versions\r
 113         // of Mozilla. Extend both!\r
 114         //XMLDocument.prototype.loadXML = \r
 115         Document.prototype.loadXML = function (s) {\r
 116                 \r
 117                 // parse the string to a new doc        \r
 118                 var doc2 = (new DOMParser()).parseFromString(s, "text/xml");\r
 119                 \r
 120                 // remove all initial children\r
 121                 while (this.hasChildNodes())\r
 122                         this.removeChild(this.lastChild);\r
 123                         \r
 124                 // insert and import nodes\r
 125                 for (var i = 0; i < doc2.childNodes.length; i++) {\r
 126                         this.appendChild(this.importNode(doc2.childNodes[i], true));\r
 127                 }\r
 128         };\r
 129         \r
 130         \r
 131         /*\r
 132          * xml getter\r
 133          *\r
 134          * This serializes the DOM tree to an XML String\r
 135          *\r
 136          * Usage: var sXml = oNode.xml\r
 137          *\r
 138          */\r
 139         // XMLDocument did not extend the Document interface in some versions\r
 140         // of Mozilla. Extend both!\r
 141         /*\r
 142         XMLDocument.prototype.__defineGetter__("xml", function () {\r
 143                 return (new XMLSerializer()).serializeToString(this);\r
 144         });\r
 145         */\r
 146         Document.prototype.__defineGetter__("xml", function () {\r
 147                 return (new XMLSerializer()).serializeToString(this);\r
 148         });\r
 149 }