51 lines
1.7 KiB
JavaScript
Executable File
51 lines
1.7 KiB
JavaScript
Executable File
Ext.namespace('Ext.ux');
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var scriptRegister = [];
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Ext.ux.OnDemandLoad = function(){
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loadComponent = function(component, callback){
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if( !scriptRegister[component] ) {
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scriptRegister[component] = { loaded: false };
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}
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var fileType = component.substring(component.lastIndexOf('.'));
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var head = document.getElementsByTagName("head")[0];
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var done = false;
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if (fileType === ".js" ) {
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if( !scriptRegister[component].loaded ) {
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var fileRef = document.createElement('script');
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fileRef.setAttribute("type", "text/javascript");
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fileRef.setAttribute("src", component);
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fileRef.onload = fileRef.onreadystatechange = function(){
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if (!done) {
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scriptRegister[component].loaded = true;
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done = true;
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if(typeof callback == "function"){
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callback();
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};
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head.removeChild(fileRef);
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}
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};
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} else {
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if(typeof callback == "function"){
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callback();
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};
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}
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} else if (fileType === ".css" && !scriptRegister[component].loaded) {
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var fileRef = document.createElement("link");
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fileRef.setAttribute("type", "text/css");
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fileRef.setAttribute("rel", "stylesheet");
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fileRef.setAttribute("href", component);
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scriptRegister[component].loaded = true;
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}
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if (typeof fileRef != "undefined") {
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head.appendChild(fileRef);
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}
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};
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return {
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load: function(component, callback){
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loadComponent(component, callback);
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}
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};
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}(); |