// callback pool needs global scope var rsContextPoolSize = 0; var rsContextMaxPool = 10; var rsContextPool = new Array(); var rsBrowser = rsBrowserSniff(); var rsPOST = false; //---------------------------------------------------------------------------------- // constructor for context object function rsContextObj( contextID ){ // properties this.id = contextID; this.busy = true; this.callback = null; this.container = contextCreateContainer( contextID ); // methods this.GET = contextGET; if (rsBrowser == 'IE') this.POST = contextPOST; else this.POST = contextPOST_MOZ; this.getPayload = contextGetPayload; this.setVisibility = contextSetVisibility; } //---------------------------------------------------------------------------------- // method functions are not privately scoped // because Netscape's debugger chokes on private functions function contextCreateContainer( containerName ){ // creates hidden container to receive server data var container; switch( rsBrowser ) { case 'NS': container = new Layer(100); container.name = containerName; container.visibility = 'hidden'; container.clip.width = 100; container.clip.height = 100; break; case 'IE': document.body.insertAdjacentHTML( "beforeEnd", '' ); var span = document.all( "SPAN" + containerName ); var html = ''; span.innerHTML = html; span.style.display = 'none'; container = window.frames[ containerName ]; break; case 'MOZ': var span = document.createElement('span'); span.id = "SPAN" + containerName; document.body.appendChild( span ); var iframe = document.createElement('iframe'); iframe.name = containerName; span.appendChild( iframe ); container = iframe; break; } return container; } //---------------------------------------------------------------------------------- function contextPOST( rsPage, func, parms ) { var d = new Date(); var unique = d.getTime() + '' + Math.floor(1000 * Math.random()); var doc = this.container.document; doc.open(); doc.write(''); doc.write(''); doc.close(); doc.forms['rsForm'].submit(); } //---------------------------------------------------------------------------------- function contextGetForm(contextObj) { switch( rsBrowser ) { case 'NS': return contextObj.container.document.forms['rsForm']; case 'IE': return contextObj.container.document.forms['rsForm']; case 'MOZ': return window.frames[contextObj.container.name].document.forms['rsForm']; } } //---------------------------------------------------------------------------------- function rsDoPost( contextID ) { // get context object and invoke callback var contextObj = rsContextPool[ contextID ]; var objForm = contextGetForm(contextObj); // build URL to call var innerHTML = ''; // always send context innerHTML += ''; // func and parms are optional if (contextObj.func != null) { innerHTML += ''; if (contextObj.parms != null){ if (typeof(contextObj.parms) == "string"){ // single parameter innerHTML += ''; } else { // assume parms is array of strings for( var i=0; i < contextObj.parms.length; i++ ) { innerHTML += ''; } } // parm type } // parms } // func // unique string to defeat cache var d = new Date(); innerHTML += ''; // insert the form fields and make the call objForm.innerHTML = innerHTML; objForm.action = contextObj.rsPage; objForm.submit(); } //---------------------------------------------------------------------------------- function contextPOST_MOZ( rsPage, func, parms ) { this.func = func; if (parms != null) this.parms = parms; this.rsPage = rsPage; var URL = "/include/rs/rsPost.jsp?C=" + this.id; switch( rsBrowser ) { case 'NS': this.container.src = URL; break; case 'IE': this.container.document.location.replace(URL); break; case 'MOZ': this.container.src = ''; this.container.src = URL; break; } } //---------------------------------------------------------------------------------- function contextGET( rsPage, func, parms ) { // build URL to call var URL = rsPage; // always send context URL += "?C=" + this.id; // func and parms are optional if (func != null){ URL += "&F=" + escape(func); if (parms != null){ if (typeof(parms) == "string"){ // single parameter URL += "&P0=[" + escape(parms+'') + "]"; } else { // assume parms is array of strings for( var i=0; i < parms.length; i++ ){ URL += "&P" + i + "=[" + escape(parms[i]+'') + "]"; } } // parm type } // parms } // func // unique string to defeat cache var d = new Date(); URL += "&U=" + d.getTime(); //alert(URL); if (document.all) window.clipboardData.setData("Text", URL); // make the call switch( rsBrowser ) { case 'NS': this.container.src = URL; break; case 'IE': this.container.document.location.replace(URL); break; case 'MOZ': this.container.src = ''; this.container.src = URL; break; } } //---------------------------------------------------------------------------------- function contextGetPayload() { switch( rsBrowser ) { case 'NS': return this.container.document.forms['rsForm'].elements['rsReturn'].value; case 'IE': return this.container.document.forms['rsForm']['rsReturn'].value; case 'MOZ': return window.frames[this.container.name].document.forms['rsForm']['rsReturn'].value; } } //---------------------------------------------------------------------------------- function contextSetVisibility( vis ) { switch( rsBrowser ) { case 'NS': this.container.visibility = (vis)? 'show' : 'hidden'; break; case 'IE': document.all("SPAN" + this.id ).style.display = (vis)? '' : 'none'; break; case 'MOZ': document.getElementById("SPAN" + this.id).style.visibility = (vis)? '' : 'hidden'; this.container.width = (vis)? 250 : 0; this.container.height = (vis)? 100 : 0; break; } } //---------------------------------------------------------------------------------- // end of context constructor function rsGetContextID() { var contextObj; for (var i = 1; i <= rsContextPoolSize; i++) { contextObj = rsContextPool[ 'rs' + i ]; if ( !contextObj.busy ) { contextObj.busy = true; return contextObj.id; } } // if we got here, there are no existing free contexts if ( rsContextPoolSize <= rsContextMaxPool ) { // create new context var contextID = "rs" + (rsContextPoolSize + 1); rsContextPool[ contextID ] = new rsContextObj( contextID ); rsContextPoolSize++; return contextID; } else { alert( "Remote Scripting Error: Context pool full" ); return null; } } //---------------------------------------------------------------------------------- function rsExecute( rspage, callback, func, parms, visibility ) { // call a server routine from client code // // rspage - href to asp file // callback - function to call on return // or null if no return needed // (passes returned string to callback) // func - sub or function name to call // parm - string parameter to function // or array of string parameters if more than one // visibility - optional boolean to make container visible for debugging // get context var contextObj = rsContextPool[ rsGetContextID() ]; contextObj.callback = callback; var vis = (visibility == null)? false : visibility; contextObj.setVisibility( vis ); if ( rsPOST && ((rsBrowser == 'IE') || (rsBrowser == 'MOZ'))){ contextObj.POST( rspage, func, parms ); } else { contextObj.GET( rspage, func, parms ); } return contextObj.id; } //---------------------------------------------------------------------------------- function rsLoaded( contextID ) { // get context object and invoke callback var contextObj = rsContextPool[ contextID ]; if( contextObj.callback != null){ contextObj.callback( rsUnescape( contextObj.getPayload() ), contextID ); } // clean up and return context to pool contextObj.callback = null; contextObj.busy = false; } //---------------------------------------------------------------------------------- function rsError( contextID, str ) { alert( unescape(str) ); rsContextPool[ contextID ].busy = false } //---------------------------------------------------------------------------------- function rsEscapeQQ( thing ) { return thing.replace(/'"'/g, '\\"'); } //---------------------------------------------------------------------------------- function rsUnescape( str ) { // payload has slashes escaped with whacks return str.replace( /\\\//g, "/" ); } //---------------------------------------------------------------------------------- function rsBrowserSniff() { if (document.layers) return "NS"; if (document.all) return "IE"; if (document.getElementById) return "MOZ"; return "OTHER"; } //---------------------------------------------------------------------------------- ///////////////////////////////////////////////// // // user functions function rsArrayFromString( s, delim ){ // rebuild an array returned from server as string // optional delimiter defaults to ~ var d = (delim == null)? '~' : delim; return s.split(d); } //---------------------------------------------------------------------------------- function rsDebugInfo(){ // use for debugging by attaching to f1 (works with IE) // with onHelp = "return rsDebugInfo();" in the body tag var doc = window.open().document; doc.open; doc.write( 'Pool Size: ' + rsContextPoolSize + '
' ); for( var i in rsContextPool ){ var contextObj = rsContextPool[i]; doc.write( '
' + contextObj.id + ' : ' + (contextObj.busy ? 'busy' : 'available') + '
'); doc.write( contextObj.container.document.location.pathname + '
'); doc.write( contextObj.container.document.location.search + '
'); doc.write( '
' + contextObj.container.document.body.innerHTML + '
' ); } doc.write(''); doc.close(); return false; } //----------------------------------------------------------------------------------