overview-summary-sarissa_ieemu_load.js.html

sarissa用于支持多浏览器的浏览及编程

        };
        <span class="reserved">if</span>(window.XMLDocument){
            <span class="comment">/**
            * &lt;p&gt;Keeps a handle to the original load() method. Internal use and only
            * if Mozilla version is lower than 1.4&lt;/p&gt;
            * <span class="attrib">@private</span>
            */</span>
            XMLDocument.<span class="reserved">prototype</span>._sarissa_load = XMLDocument.<span class="reserved">prototype</span>.load;
            <span class="comment">// NOTE: setting async to false will only work with documents</span>
            <span class="comment">// called over HTTP (meaning a server), not the local file system,</span>
            <span class="comment">// unless you are using Moz 1.4+.</span>
        
            <span class="comment">/**
            * &lt;p&gt;This is deprecated, use XMLHttpRequest to load remote documents instead. 
            * Overrides the original load method to provide synchronous loading for
            * Mozilla versions prior to 1.4 and fix ready state stuff.&lt;/p&gt;
            * <span class="attrib">@deprecated</span> 
            * <span class="attrib">@returns</span> the DOM Object as it was before the load() call (may be  empty)
            */</span>
            XMLDocument.<span class="reserved">prototype</span>.load = <span class="reserved">function</span>(sURI) {
                var oDoc = Sarissa.getDomDocument();
                Sarissa.copyChildNodes(<span class="reserved">this</span>, oDoc);
                <span class="reserved">this</span>.parseError.errorCode = 0;
                Sarissa.__setReadyState__(<span class="reserved">this</span>, 1);
                try {
                    <span class="reserved">if</span>(<span class="reserved">this</span>.async == false &amp;&amp; _SARISSA_SYNC_NON_IMPLEMENTED) {
                        var tmp = new XMLHttpRequest();
                        tmp.open(<span class="literal">"GET"</span>, sURI, false);
                        tmp.send(null);
                        Sarissa.__setReadyState__(<span class="reserved">this</span>, 2);
                        Sarissa.copyChildNodes(tmp.responseXML, <span class="reserved">this</span>);
                        Sarissa.__setReadyState__(<span class="reserved">this</span>, 3);
                    }<span class="reserved">else</span>{
                        <span class="reserved">this</span>._sarissa_load(sURI);
                    };
                }
                catch (objException) {
                        oDoc.parseError.errorCode = -1;
                }
                finally {
                    <span class="reserved">if</span> (!oDoc.documentElement || oDoc.documentElement.tagName == <span class="literal">"parsererror"</span>){
                        oDoc.parseError.errorCode = -1;
                    };
                    <span class="reserved">if</span>(<span class="reserved">this</span>.async == false){
                        Sarissa.__handleLoad__(<span class="reserved">this</span>);
                    };
                };
                <span class="reserved">return</span> oDoc;
            };
        <span class="comment">//if(window.XMLDocument) , now mainly for opera  </span>
        }<span class="comment">// TODO: check if the new document has content before trying to copynodes, check  for error handling in DOM 3 LS</span>
        <span class="reserved">else</span> <span class="reserved">if</span>(document.implementation &amp;&amp; document.implementation.hasFeature &amp;&amp; document.implementation.hasFeature(<span class="literal">'LS'</span>, <span class="literal">'3.0'</span>)){
            Document.<span class="reserved">prototype</span>.async = true;
            Document.<span class="reserved">prototype</span>.onreadystatechange = null;
            Document.<span class="reserved">prototype</span>.load = <span class="reserved">function</span>(sURI) {
                var oldDoc = Sarissa.getDomDocument();
                Sarissa.copyChildNodes(<span class="reserved">this</span>, oldDoc, false);
                var parser = document.implementation.createLSParser(<span class="reserved">this</span>.async ? document.implementation.MODE_ASYNCHRONOUS : document.implementation.MODE_SYNCHRONOUS, null);
                <span class="reserved">if</span>(<span class="reserved">this</span>.async){
                    var self = <span class="reserved">this</span>;
                    parser.addEventListener(<span class="literal">"load"</span>, 
                        <span class="reserved">function</span>(e) { 
                              self.readyState = 4;
                              Sarissa.copyChildNodes(e.newDocument, self, false);
                              self.onreadystatechange.call(); 
                        }, 
                        false); 
                };
                try {
                    var oDoc = parser.parseURI(sURI);
                    <span class="reserved">if</span>(!<span class="reserved">this</span>.async) {
                        Sarissa.copyChildNodes(oDoc, <span class="reserved">this</span>, false);
                    };
                }
                catch(e){
                    <span class="reserved">this</span>.parseError.errorCode = -1;
                };
                <span class="reserved">return</span> oldDoc;
            };
            <span class="comment">/**
            * &lt;p&gt;Factory method to obtain a new DOM Document object&lt;/p&gt;
            * <span class="attrib">@argument</span> sUri the namespace of the root node (if any)
            * <span class="attrib">@argument</span> sUri the local name of the root node (if any)
            * <span class="attrib">@returns</span> a new DOM Document
            */</span>
            Sarissa.getDomDocument = <span class="reserved">function</span>(sUri, sName){
                var oDoc = document.implementation.createDocument(sUri?sUri:null, sName?sName:null, null);
                <span class="reserved">if</span>(!oDoc.parseError){
                    oDoc.parseError = {errorCode:0};
                };
                <span class="reserved">return</span> oDoc;
            };
        }
        <span class="reserved">else</span> {
            Sarissa.getDomDocument = <span class="reserved">function</span>(sUri, sName){
                var oDoc = document.implementation.createDocument(sUri?sUri:null, sName?sName:null, null);
                <span class="comment">// looks like safari does not create the root element for some unknown reason</span>
                <span class="reserved">if</span>(oDoc &amp;&amp; (sUri || sName) &amp;&amp; !oDoc.documentElement){
                    oDoc.appendChild(oDoc.createElementNS(sUri, sName));
                };
                <span class="comment">// attachb to the new object as we have no prototype to use, this is for safari</span>
                <span class="reserved">if</span>(!oDoc.load) {
                        oDoc.load = <span class="reserved">function</span>(sUrl) {
                            var oldDoc = document.implementation.createDocument();
                            Sarissa.copyChildNodes(<span class="reserved">this</span>, oldDoc);
                            <span class="reserved">this</span>.parseError = {errorCode : 0};
                            Sarissa.__setReadyState__(<span class="reserved">this</span>, 1);
                            <span class="reserved">if</span>(<span class="reserved">this</span>.async == false) {
                                var tmp = new XMLHttpRequest();
                                tmp.open(<span class="literal">"GET"</span>, sUrl, false);
                                tmp.send(null);
                                Sarissa.__setReadyState__(<span class="reserved">this</span>, 2);
                                Sarissa.copyChildNodes(tmp.responseXML, oDoc);
                                <span class="reserved">if</span>(!oDoc.documentElement || oDoc.getElementsByTagName(<span class="literal">"parsererror"</span>).length &gt;0){
                                    oDoc.parseError.errorCode = -1;
                                };
                                Sarissa.__setReadyState__(<span class="reserved">this</span>, 3);
                                Sarissa.__setReadyState__(<span class="reserved">this</span>, 4);
                            }
                            <span class="reserved">else</span> {
                                var xmlhttp = new XMLHttpRequest();
                                xmlhttp.open(<span class="literal">'GET'</span>, sUrl, true);
                                xmlhttp.onreadystatechange = <span class="reserved">function</span>(){
                                    <span class="reserved">if</span> (xmlhttp.readyState == 4) {
                                        Sarissa.copyChildNodes(xmlhttp.responseXML, oDoc);
                                        <span class="reserved">if</span>(!oDoc.documentElement || oDoc.getElementsByTagName(<span class="literal">"parsererror"</span>).length &gt; 0){
                                            oDoc.parseError.errorCode = -1;
                                        };      
                                    };
                                Sarissa.__setReadyState__(oDoc, xmlhttp.readyState);
                                };
                                xmlhttp.send(null);
                            };
                            <span class="reserved">return</span> oldDoc;
                        };
                };
                <span class="reserved">return</span> oDoc;
            };
        };
    };<span class="comment">//if(_SARISSA_HAS_DOM_CREATE_DOCUMENT)</span>
};
<span class="comment">//   EOF</span>
</pre>
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<div class="jsdoc_ctime">Documentation generated by <a href="http://jsdoc.sourceforge.net/" target="_parent">JSDoc</a> on Thu Nov 30 22:06:11 2006</div>
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