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154 lines
4.8 KiB
154 lines
4.8 KiB
2 years ago
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/*
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DynAPI Distribution
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IOElement SYNChronous add-on
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The DynAPI Distribution is distributed under the terms of the GNU LGPL license.
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requires: dynapi.util.IOElement
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*/
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IOElementSync={}
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IOElement.SYNC=true;
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var p=IOElement.prototype;
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p.activateSyncMode = function(fn,useJava){
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this._SyncFn=fn;
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this._useJava=useJava;
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this._hasXMLHttp=(this._hasXMLHttp==null)? IOElement._hasXMLHttp():this._hasXMLHttp;
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if (!this.isSync && this._created) {
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window.setTimeout(this+'._initSync()',100);
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}
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};
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p._syncRequest = function(url,data,method){
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var dataBody;
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var i,mode,rq,rt={value:''},nv=[];
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var id = this._getRandomID(); // create random load ID to ensure no caching
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if(!this.isSync) return;
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method=(method+'').toLowerCase();
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mod=(method=='post'||method=='get')? method:'get';
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url=IOElement.getAbsoluteUrl(url);
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url += ((url.indexOf('?')==-1)? '?' : '&')+'IORequestID='+id+'&IOMethod='+mod;
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for (i in data) {
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nv[nv.length]=i+'='+((mod!='get')? data[i]:IOElement.URLEncode(data[i]));
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};
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dataBody = nv.join('&');
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if(data && mod=='get') {url+='&'+dataBody;dataBody=null}
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// get HTTP Request Object
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if(!this._hReq) this._hReq=IOElement._getHttpReq(this._jApplet);
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rq=this._hReq; rq.open(mod,url,false);
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if (mod=='post') rq.setRequestHeader("Content-type", "application/x-www-form-urlencoded");
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if(dynapi.ua.ns4) {
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rq.send(dataBody); rt.value=rq.responseText;
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}else {
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eval('try {'
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+' rq.send(dataBody); rt.value=rq.responseText;'
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+'} catch(e) {}');
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}
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if(rq.status!=200) rt.error={code:rq.status,text:'Connection Error : '+rq.statusText};
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return rt;
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};
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p._initApplet = function(){
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var isJava,doc,scope=this.getScope(this._elmID+'Sync');
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doc=scope.document;
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this._jApplet=doc.applets['loadApplet'];
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isJava = !(navigator.javaEnabled() && this._jApplet);
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if(isJava) alert('IOElement Error: Java Applet not loaded. Java is not enabled on this browser');
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else{
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this.isSync=true;
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if (typeof(this._SyncFn)=='function') this._SyncFn();
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else eval(this._SyncFn);
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}
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};
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p._initSync = function(){
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var evl,ua=dynapi.ua;
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if (this._hasXMLHttp && !this._useJava ) {
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this.isSync=true;
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if (typeof(this._SyncFn)=='function') this._SyncFn();
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else eval(this._SyncFn);
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}else {
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var t,url,doc;
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var scope=this.getScope(this._elmID+'Sync');
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if(!scope) return;
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url=dynapi.library.path+'util/';
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t='<html><body><applet name="loadApplet" id="loadApplet" codebase="'+url+'" code="url.class" width="1" height="1"></applet></body></html>';
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doc=scope.document;
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doc.open();doc.write(t);doc.close();
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window.setTimeout(this+'._initApplet()',1000); // Allow applet to initialize
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}
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};
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IOElement._getHttpReq = function(jApplet){
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var o,ua=dynapi.ua;
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if (jApplet) o = new JavaHttpRequest(jApplet);
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else if(IOElement._hasXMLHttp()){
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if (ua.ns) o = new XMLHttpRequest();
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else if (ua.ie) {
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var t='try {o = new ActiveXObject("Microsoft.XMLHTTP");}'
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+'catch(e){o = new ActiveXObject("MSXML2.XMLHTTP");}'
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eval(t);
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}
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}
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return o;
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};
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IOElement._hasXMLHttp = function(){
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var state,ua=dynapi.ua;
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// ie for mac,ie4, ns4, ns6.1,x, does not support xmlhttprequest
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// while ns 6.2.x (based on gecko 0.9.4) supports xmlhttprequest but
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// it does not support sending string via send() - only gecko 0.9.7+ can send string
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// netscape 6.x needs the Java-Plugin to support java applets :(
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if(ua.ns && navigator.vendor=='Netscape6') state=false;
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else if(ua.v>4 && (ua.ns||(ua.ie && ua.win32))) state=true;
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return state;
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};
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// GetAbsoluteURL
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IOElement.getAbsoluteUrl=function(url, docUrl) { // inspired by afroAPI urlToAbs()
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if(url && url.indexOf('://')>0) return url;
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docUrl=(docUrl)? docUrl.substring(0,docUrl.lastIndexOf('/')+1):dynapi.documentPath;
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url=url.replace(/^(.\/)*/,'');
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docUrl=docUrl.replace(/(\?.*)$/,'').replace(/(#.*)*$/,'').replace(/[^\/]*$/,'');
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if (url.indexOf('/')==0) return docUrl.substring(0,docUrl.indexOf('/',docUrl.indexOf('//')+2))+url;
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else while(url.indexOf('../')==0){
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url=url.replace(/^..\//,'');
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docUrl=docUrl.replace(/([^\/]+[\/][^\/]*)$/,'');
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};
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return docUrl+url;
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};
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// Java Base HttpRequest
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JavaHttpRequest = function(jApplet){
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this.applet=jApplet;
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this.url = "";
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this.responseText = "";
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this.status=200;this.statusText="";
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};
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var jhr = JavaHttpRequest.prototype;
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jhr.setRequestHeader = function(){}; //dummy
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jhr.open = function(method,url){
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this.url = url;
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this.method = (method||'get');
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};
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jhr.send = function(data){
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var r,url=this.url;
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if (url=="") return false;
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this.responseText = "";
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if (this.applet){
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this.status=200;this.statusText="";
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if(!url.indexOf('file:///') && url.indexOf('file://')) url='file:///'+url.substr(7);
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r=this.applet.readURL(url, true, data||"", dynapi.documentPath);
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if(r) {
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r=new String(r);
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r=r.replace(/\n$/,'');
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if(r.indexOf('Error: ')==0) {
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this.status='403';
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this.statusText=r.substr(7);
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}
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this.responseText=r;
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}
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return true;
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}
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};
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