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| Rev | Author | Line No. | Line |
|---|---|---|---|
| 20 | reyssat | 1 | /* |
| 2 | DynAPI Distribution |
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| 3 | IOElement SYNChronous add-on |
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| 4 | |||
| 5 | The DynAPI Distribution is distributed under the terms of the GNU LGPL license. |
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| 6 | |||
| 7 | requires: dynapi.util.IOElement |
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| 8 | */ |
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| 9 | |||
| 10 | IOElementSync={} |
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| 11 | IOElement.SYNC=true; |
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| 12 | |||
| 13 | var p=IOElement.prototype; |
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| 14 | |||
| 15 | p.activateSyncMode = function(fn,useJava){ |
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| 16 | this._SyncFn=fn; |
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| 17 | this._useJava=useJava; |
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| 18 | this._hasXMLHttp=(this._hasXMLHttp==null)? IOElement._hasXMLHttp():this._hasXMLHttp; |
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| 19 | if (!this.isSync && this._created) { |
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| 20 | window.setTimeout(this+'._initSync()',100); |
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| 21 | } |
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| 22 | }; |
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| 23 | p._syncRequest = function(url,data,method){ |
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| 24 | var dataBody; |
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| 25 | var i,mode,rq,rt={value:''},nv=[]; |
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| 26 | var id = this._getRandomID(); // create random load ID to ensure no caching |
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| 27 | if(!this.isSync) return; |
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| 28 | method=(method+'').toLowerCase(); |
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| 29 | mod=(method=='post'||method=='get')? method:'get'; |
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| 30 | url=IOElement.getAbsoluteUrl(url); |
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| 31 | url += ((url.indexOf('?')==-1)? '?' : '&')+'IORequestID='+id+'&IOMethod='+mod; |
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| 32 | for (i in data) { |
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| 33 | nv[nv.length]=i+'='+((mod!='get')? data[i]:IOElement.URLEncode(data[i])); |
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| 34 | }; |
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| 35 | dataBody = nv.join('&'); |
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| 36 | if(data && mod=='get') {url+='&'+dataBody;dataBody=null} |
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| 37 | // get HTTP Request Object |
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| 38 | if(!this._hReq) this._hReq=IOElement._getHttpReq(this._jApplet); |
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| 39 | rq=this._hReq; rq.open(mod,url,false); |
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| 40 | if (mod=='post') rq.setRequestHeader("Content-type", "application/x-www-form-urlencoded"); |
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| 41 | if(dynapi.ua.ns4) { |
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| 42 | rq.send(dataBody); rt.value=rq.responseText; |
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| 43 | }else { |
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| 44 | eval('try {' |
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| 45 | +' rq.send(dataBody); rt.value=rq.responseText;' |
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| 46 | +'} catch(e) {}'); |
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| 47 | } |
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| 48 | if(rq.status!=200) rt.error={code:rq.status,text:'Connection Error : '+rq.statusText}; |
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| 49 | return rt; |
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| 50 | }; |
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| 51 | p._initApplet = function(){ |
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| 52 | var isJava,doc,scope=this.getScope(this._elmID+'Sync'); |
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| 53 | doc=scope.document; |
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| 54 | this._jApplet=doc.applets['loadApplet']; |
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| 55 | isJava = !(navigator.javaEnabled() && this._jApplet); |
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| 56 | if(isJava) alert('IOElement Error: Java Applet not loaded. Java is not enabled on this browser'); |
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| 57 | else{ |
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| 58 | this.isSync=true; |
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| 59 | if (typeof(this._SyncFn)=='function') this._SyncFn(); |
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| 60 | else eval(this._SyncFn); |
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| 61 | } |
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| 62 | }; |
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| 63 | p._initSync = function(){ |
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| 64 | var evl,ua=dynapi.ua; |
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| 65 | if (this._hasXMLHttp && !this._useJava ) { |
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| 66 | this.isSync=true; |
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| 67 | if (typeof(this._SyncFn)=='function') this._SyncFn(); |
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| 68 | else eval(this._SyncFn); |
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| 69 | }else { |
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| 70 | var t,url,doc; |
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| 71 | var scope=this.getScope(this._elmID+'Sync'); |
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| 72 | if(!scope) return; |
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| 73 | url=dynapi.library.path+'util/'; |
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| 74 | t='<html><body><applet name="loadApplet" id="loadApplet" codebase="'+url+'" code="url.class" width="1" height="1"></applet></body></html>'; |
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| 75 | doc=scope.document; |
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| 76 | doc.open();doc.write(t);doc.close(); |
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| 77 | window.setTimeout(this+'._initApplet()',1000); // Allow applet to initialize |
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| 78 | } |
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| 79 | }; |
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| 80 | IOElement._getHttpReq = function(jApplet){ |
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| 81 | var o,ua=dynapi.ua; |
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| 82 | if (jApplet) o = new JavaHttpRequest(jApplet); |
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| 83 | else if(IOElement._hasXMLHttp()){ |
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| 84 | if (ua.ns) o = new XMLHttpRequest(); |
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| 85 | else if (ua.ie) { |
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| 86 | var t='try {o = new ActiveXObject("Microsoft.XMLHTTP");}' |
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| 87 | +'catch(e){o = new ActiveXObject("MSXML2.XMLHTTP");}' |
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| 88 | eval(t); |
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| 89 | } |
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| 90 | |||
| 91 | } |
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| 92 | return o; |
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| 93 | }; |
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| 94 | IOElement._hasXMLHttp = function(){ |
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| 95 | var state,ua=dynapi.ua; |
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| 96 | // ie for mac,ie4, ns4, ns6.1,x, does not support xmlhttprequest |
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| 97 | // while ns 6.2.x (based on gecko 0.9.4) supports xmlhttprequest but |
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| 98 | // it does not support sending string via send() - only gecko 0.9.7+ can send string |
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| 99 | // netscape 6.x needs the Java-Plugin to support java applets :( |
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| 100 | if(ua.ns && navigator.vendor=='Netscape6') state=false; |
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| 101 | else if(ua.v>4 && (ua.ns||(ua.ie && ua.win32))) state=true; |
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| 102 | return state; |
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| 103 | }; |
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| 104 | |||
| 105 | // GetAbsoluteURL |
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| 106 | IOElement.getAbsoluteUrl=function(url, docUrl) { // inspired by afroAPI urlToAbs() |
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| 107 | if(url && url.indexOf('://')>0) return url; |
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| 108 | docUrl=(docUrl)? docUrl.substring(0,docUrl.lastIndexOf('/')+1):dynapi.documentPath; |
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| 109 | url=url.replace(/^(.\/)*/,''); |
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| 110 | docUrl=docUrl.replace(/(\?.*)$/,'').replace(/(#.*)*$/,'').replace(/[^\/]*$/,''); |
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| 111 | if (url.indexOf('/')==0) return docUrl.substring(0,docUrl.indexOf('/',docUrl.indexOf('//')+2))+url; |
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| 112 | else while(url.indexOf('../')==0){ |
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| 113 | url=url.replace(/^..\//,''); |
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| 114 | docUrl=docUrl.replace(/([^\/]+[\/][^\/]*)$/,''); |
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| 115 | }; |
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| 116 | return docUrl+url; |
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| 117 | }; |
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| 118 | |||
| 119 | // Java Base HttpRequest |
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| 120 | JavaHttpRequest = function(jApplet){ |
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| 121 | this.applet=jApplet; |
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| 122 | this.url = ""; |
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| 123 | this.responseText = ""; |
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| 124 | this.status=200;this.statusText=""; |
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| 125 | }; |
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| 126 | var jhr = JavaHttpRequest.prototype; |
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| 127 | jhr.setRequestHeader = function(){}; //dummy |
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| 128 | jhr.open = function(method,url){ |
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| 129 | this.url = url; |
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| 130 | this.method = (method||'get'); |
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| 131 | }; |
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| 132 | jhr.send = function(data){ |
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| 133 | var r,url=this.url; |
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| 134 | if (url=="") return false; |
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| 135 | |||
| 136 | this.responseText = ""; |
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| 137 | if (this.applet){ |
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| 138 | this.status=200;this.statusText=""; |
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| 139 | if(!url.indexOf('file:///') && url.indexOf('file://')) url='file:///'+url.substr(7); |
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| 140 | r=this.applet.readURL(url, true, data||"", dynapi.documentPath); |
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| 141 | if(r) { |
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| 142 | r=new String(r); |
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| 143 | r=r.replace(/\n$/,''); |
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| 144 | if(r.indexOf('Error: ')==0) { |
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| 145 | this.status='403'; |
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| 146 | this.statusText=r.substr(7); |
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| 147 | } |
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| 148 | this.responseText=r; |
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| 149 | } |
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| 150 | return true; |
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| 151 | } |
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| 152 | }; |
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| 153 |