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-rw-r--r--httemplate/elements/jsrsClient.js356
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diff --git a/httemplate/elements/jsrsClient.js b/httemplate/elements/jsrsClient.js
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-//
-// jsrsClient.js - javascript remote scripting client include
-//
-// Author: Brent Ashley [jsrs@megahuge.com]
-//
-// make asynchronous remote calls to server without client page refresh
-//
-// see license.txt for copyright and license information
-
-/*
-see history.txt for full history
-2.0 26 Jul 2001 - added POST capability for IE/MOZ
-2.2 10 Aug 2003 - added Opera support
-2.3(beta) 10 Oct 2003 - added Konqueror support - **needs more testing**
-*/
-
-// callback pool needs global scope
-var jsrsContextPoolSize = 0;
-var jsrsContextMaxPool = 10;
-var jsrsContextPool = new Array();
-var jsrsBrowser = jsrsBrowserSniff();
-var jsrsPOST = true;
-var containerName;
-
-// constructor for context object
-function jsrsContextObj( contextID ){
-
- // properties
- this.id = contextID;
- this.busy = true;
- this.callback = null;
- this.container = contextCreateContainer( contextID );
-
- // methods
- this.GET = contextGET;
- this.POST = contextPOST;
- 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( jsrsBrowser ) {
- 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( "afterBegin", '<span id="SPAN' + containerName + '"></span>' );
- var span = document.all( "SPAN" + containerName );
- var html = '<iframe name="' + containerName + '" src=""></iframe>';
- 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;
- iframe.id = containerName;
- span.appendChild( iframe );
- container = iframe;
- break;
-
- case 'OPR':
- var span = document.createElement('SPAN');
- span.id = "SPAN" + containerName;
- document.body.appendChild( span );
- var iframe = document.createElement('IFRAME');
- iframe.name = containerName;
- iframe.id = containerName;
- span.appendChild( iframe );
- container = iframe;
- break;
-
- case 'KONQ':
- var span = document.createElement('SPAN');
- span.id = "SPAN" + containerName;
- document.body.appendChild( span );
- var iframe = document.createElement('IFRAME');
- iframe.name = containerName;
- iframe.id = containerName;
- span.appendChild( iframe );
- container = iframe;
-
- // Needs to be hidden for Konqueror, otherwise it'll appear on the page
- span.style.display = none;
- iframe.style.display = none;
- iframe.style.visibility = hidden;
- iframe.height = 0;
- iframe.width = 0;
-
- break;
- }
- return container;
-}
-
-function contextPOST( rsPage, func, parms ){
-
- var d = new Date();
- var unique = d.getTime() + '' + Math.floor(1000 * Math.random());
- var doc = (jsrsBrowser == "IE" ) ? this.container.document : this.container.contentDocument;
- doc.open();
- doc.write('<html><body>');
- doc.write('<form name="jsrsForm" method="post" target="" ');
- doc.write(' action="' + rsPage + '?U=' + unique + '">');
- doc.write('<input type="hidden" name="C" value="' + this.id + '">');
-
- // func and parms are optional
- if (func != null){
- doc.write('<input type="hidden" name="F" value="' + func + '">');
-
- if (parms != null){
- if (typeof(parms) == "string"){
- // single parameter
- doc.write( '<input type="hidden" name="P0" '
- + 'value="[' + jsrsEscapeQQ(parms) + ']">');
- } else {
- // assume parms is array of strings
- for( var i=0; i < parms.length; i++ ){
- doc.write( '<input type="hidden" name="P' + i + '" '
- + 'value="[' + jsrsEscapeQQ(parms[i]) + ']">');
- }
- } // parm type
- } // parms
- } // func
-
- doc.write('</form></body></html>');
- doc.close();
- doc.forms['jsrsForm'].submit();
-}
-
-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();
-
- // make the call
- switch( jsrsBrowser ) {
- 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;
- case 'OPR':
- this.container.src = '';
- this.container.src = URL;
- break;
- case 'KONQ':
- this.container.src = '';
- this.container.src = URL;
- break;
- }
-}
-
-function contextGetPayload(){
- switch( jsrsBrowser ) {
- case 'NS':
- return this.container.document.forms['jsrs_Form'].elements['jsrs_Payload'].value;
- case 'IE':
- return this.container.document.forms['jsrs_Form']['jsrs_Payload'].value;
- case 'MOZ':
- return window.frames[this.container.name].document.forms['jsrs_Form']['jsrs_Payload'].value;
- case 'OPR':
- var textElement = window.frames[this.container.name].document.getElementById("jsrs_Payload");
- case 'KONQ':
- var textElement = window.frames[this.container.name].document.getElementById("jsrs_Payload");
- return textElement.value;
- }
-}
-
-function contextSetVisibility( vis ){
- switch( jsrsBrowser ) {
- 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';
- case 'OPR':
- 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 jsrsGetContextID(){
- var contextObj;
- for (var i = 1; i <= jsrsContextPoolSize; i++){
- contextObj = jsrsContextPool[ 'jsrs' + i ];
- if ( !contextObj.busy ){
- contextObj.busy = true;
- return contextObj.id;
- }
- }
- // if we got here, there are no existing free contexts
- if ( jsrsContextPoolSize <= jsrsContextMaxPool ){
- // create new context
- var contextID = "jsrs" + (jsrsContextPoolSize + 1);
- jsrsContextPool[ contextID ] = new jsrsContextObj( contextID );
- jsrsContextPoolSize++;
- return contextID;
- } else {
- alert( "jsrs Error: context pool full" );
- return null;
- }
-}
-
-function jsrsExecute( 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 = jsrsContextPool[ jsrsGetContextID() ];
- contextObj.callback = callback;
-
- var vis = (visibility == null)? false : visibility;
- contextObj.setVisibility( vis );
-
- if ( jsrsPOST && ((jsrsBrowser == 'IE') || (jsrsBrowser == 'MOZ'))){
- contextObj.POST( rspage, func, parms );
- } else {
- contextObj.GET( rspage, func, parms );
- }
-
- return contextObj.id;
-}
-
-function jsrsLoaded( contextID ){
- // get context object and invoke callback
- var contextObj = jsrsContextPool[ contextID ];
- if( contextObj.callback != null){
- contextObj.callback( jsrsUnescape( contextObj.getPayload() ), contextID );
- }
- // clean up and return context to pool
- contextObj.callback = null;
- contextObj.busy = false;
-}
-
-function jsrsError( contextID, str ){
- alert( unescape(str) );
- jsrsContextPool[ contextID ].busy = false
-}
-
-function jsrsEscapeQQ( thing ){
- return thing.replace(/'"'/g, '\\"');
-}
-
-function jsrsUnescape( str ){
- // payload has slashes escaped with whacks
- return str.replace( /\\\//g, "/" );
-}
-
-function jsrsBrowserSniff(){
- if (document.layers) return "NS";
- if (document.all) {
- // But is it really IE?
- // convert all characters to lowercase to simplify testing
- var agt=navigator.userAgent.toLowerCase();
- var is_opera = (agt.indexOf("opera") != -1);
- var is_konq = (agt.indexOf("konqueror") != -1);
- if(is_opera) {
- return "OPR";
- } else {
- if(is_konq) {
- return "KONQ";
- } else {
- // Really is IE
- return "IE";
- }
- }
- }
- if (document.getElementById) return "MOZ";
- return "OTHER";
-}
-
-/////////////////////////////////////////////////
-//
-// user functions
-
-function jsrsArrayFromString( s, delim ){
- // rebuild an array returned from server as string
- // optional delimiter defaults to ~
- var d = (delim == null)? '~' : delim;
- return s.split(d);
-}
-
-function jsrsDebugInfo(){
- // use for debugging by attaching to f1 (works with IE)
- // with onHelp = "return jsrsDebugInfo();" in the body tag
- var doc = window.open().document;
- doc.open;
- doc.write( 'Pool Size: ' + jsrsContextPoolSize + '<br><font face="arial" size="2"><b>' );
- for( var i in jsrsContextPool ){
- var contextObj = jsrsContextPool[i];
- doc.write( '<hr>' + contextObj.id + ' : ' + (contextObj.busy ? 'busy' : 'available') + '<br>');
- doc.write( contextObj.container.document.location.pathname + '<br>');
- doc.write( contextObj.container.document.location.search + '<br>');
- doc.write( '<table border="1"><tr><td>' + contextObj.container.document.body.innerHTML + '</td></tr></table>' );
- }
- doc.write('</table>');
- doc.close();
- return false;
-}
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