X-Git-Url: http://git.indexdata.com/?a=blobdiff_plain;f=js%2Fpz2.js;h=3d4d8dacc0b3a8b8458f2105cf2c42c1666e65bb;hb=7cebf8c8b85533360b140a7e5c769be4de9ea25c;hp=6d34ce0cca5b9f7b14f1c81ca2746773099164a7;hpb=103af57a266accbc9e45591aaaa4c2d93ca3057f;p=pazpar2-moved-to-github.git diff --git a/js/pz2.js b/js/pz2.js index 6d34ce0..3d4d8da 100644 --- a/js/pz2.js +++ b/js/pz2.js @@ -1,5 +1,5 @@ /* -** $Id: pz2.js,v 1.9 2007-04-18 04:07:48 quinn Exp $ +** $Id: pz2.js,v 1.51 2007-08-30 13:24:37 jakub Exp $ ** pz2.js - pazpar2's javascript client library. */ @@ -19,21 +19,34 @@ if (!window['Node']) { Node.DOCUMENT_FRAGMENT_NODE = 11; Node.NOTATION_NODE = 12; } -// check for jQuery -if(typeof window.jQuery == "undefined"){ - throw new Error("pz2.js requires jQuery library"); -} + // prevent execution of more than once if(typeof window.pz2 == "undefined") { window.undefined = window.undefined; -var pz2 = function(paramArray) { +var pz2 = function ( paramArray ) +{ + + // at least one callback required + if ( !paramArray ) + throw new Error("Pz2.js: An array with parameters has to be suplied when instantiating a class"); + //for convenience __myself = this; - // at least one callback required - if ( !paramArray ) - throw new Error("An array with parameters has to be suplied when instantiating a class"); + //supported pazpar2's protocol version + __myself.suppProtoVer = '1'; + __myself.pz2String = paramArray.pazpar2path || "/pazpar2/search.pz2"; + __myself.useSessions = true; + + __myself.stylesheet = paramArray.detailstylesheet || null; + //load stylesheet if required in async mode + if( __myself.stylesheet ) { + var request = new pzHttpRequest( __myself.stylesheet ); + request.get( {}, function ( doc ) { __myself.xslDoc = doc; } ); + } + + __myself.errorHandler = paramArray.errorhandler || null; // function callbacks __myself.statCallback = paramArray.onstat || null; @@ -41,35 +54,37 @@ var pz2 = function(paramArray) { __myself.termlistCallback = paramArray.onterm || null; __myself.recordCallback = paramArray.onrecord || null; __myself.bytargetCallback = paramArray.onbytarget || null; + __myself.resetCallback = paramArray.onreset || null; // termlist keys __myself.termKeys = paramArray.termlist || "subject"; // some configurational stuff - __myself.pz2String = "search.pz2"; __myself.keepAlive = 50000; + + if ( paramArray.keepAlive < __myself.keepAlive ) + __myself.keepAlive = paramArray.keepAlive; __myself.sessionID = null; __myself.initStatusOK = false; __myself.pingStatusOK = false; __myself.searchStatusOK = false; - - if ( paramArray.keepAlive < __myself.keepAlive ) - __myself.keepAlive = paramArray.keepAlive; - + // for sorting __myself.currentSort = "relevance"; + // where are we? __myself.currentStart = 0; __myself.currentNum = 20; // last full record retrieved __myself.currRecID = null; + // current query __myself.currQuery = null; //timers - __myself.statTime = paramArray.stattime || 2000; + __myself.statTime = paramArray.stattime || 1000; __myself.statTimer = null; __myself.termTime = paramArray.termtime || 1000; __myself.termTimer = null; @@ -79,56 +94,98 @@ var pz2 = function(paramArray) { __myself.bytargetTime = paramArray.bytargettime || 1000; __myself.bytargetTimer = null; - //useful? + // counters for each command and applied delay __myself.dumpFactor = 500; __myself.showCounter = 0; __myself.termCounter = 0; + __myself.statCounter = 0; + __myself.bytargetCounter = 0; // active clients, updated by stat and show // might be an issue since bytarget will poll accordingly __myself.activeClients = 1; - // error handling - $(document).ajaxError( - function (request, settings, exception) { - alert("AjaxErr"); - if ( settings.responseXML && settings.responseXML.getElementsByTagName("error") ) - throw new Error( settings.responseXML.getElementsByTagName("error")[0].childNodes[0].nodeValue); - }); - - // auto init session? - if (paramArray.autoInit !== false) - __myself.init(__myself.keepAlive); + // if in proxy mode no need to init + if (paramArray.usesessions != undefined) { + __myself.useSessions = paramArray.usesessions; + __myself.initStatusOK = true; + } + // else, auto init session or wait for a user init? + if (__myself.useSessions && paramArray.autoInit !== false) { + __myself.init(); + } }; -pz2.prototype = { - init: function(keepAlive) + +pz2.prototype = +{ + // stop activity by clearing tiemouts + stop: function () + { + clearTimeout(__myself.statTimer); + clearTimeout(__myself.showTimer); + clearTimeout(__myself.termTimer); + clearTimeout(__myself.bytargetTimer); + }, + + // reset status variables + reset: function () + { + if ( __myself.useSessions ) { + __myself.sessionID = null; + __myself.initStatusOK = false; + __myself.pingStatusOK = false; + } + __myself.searchStatusOK = false; + __myself.stop(); + + if ( __myself.resetCallback ) + __myself.resetCallback(); + }, + + init: function ( sessionId ) { - if ( keepAlive < __myself.keepAlive ) - __myself.keepAlive = keepAlive; + __myself.reset(); - $.get( __myself.pz2String, - { "command": "init" }, - function(data) { - if ( data.getElementsByTagName("status")[0].childNodes[0].nodeValue == "OK" ) { - __myself.initStatusOK = true; - __myself.sessionID = data.getElementsByTagName("session")[0].childNodes[0].nodeValue; - setTimeout(__myself.ping, __myself.keepAlive); + // session id as a param + if ( sessionId != undefined && __myself.useSessions ) { + __myself.initStatusOK = true; + __myself.sessionID = sessionId; + __myself.ping(); + // old school direct pazpar2 init + } else if (__myself.useSessions) { + var request = new pzHttpRequest(__myself.pz2String, __myself.errorHandler); + request.get( + { "command": "init" }, + function(data) { + if ( data.getElementsByTagName("status")[0].childNodes[0].nodeValue == "OK" ) { + if ( data.getElementsByTagName("protocol")[0].childNodes[0].nodeValue + != __myself.suppProtoVer ) + throw new Error("Server's protocol not supported by the client"); + __myself.initStatusOK = true; + __myself.sessionID = data.getElementsByTagName("session")[0].childNodes[0].nodeValue; + setTimeout("__myself.ping()", __myself.keepAlive); + } + else + // if it gets here the http return code was 200 (pz2 errors are 417) + // but the response was invalid, it should never occur + setTimeout("__myself.init()", 1000); } - else - // if it gets here the http return code was 200 (pz2 errors are 417) - // but the response was invalid, it should never occur - setTimeout("__myself.init()", 1000); - } - ); + ); + // when through proxy no need to init + } else { + __myself.initStatusOK = true; + } }, // no need to ping explicitly - ping: function() + ping: function () { - if( !__myself.initStatusOK ) - return; + // pinging only makes sense when using pazpar2 directly + if( !__myself.initStatusOK || !__myself.useSessions ) + throw new Error('Pz2.js: Ping not allowed (proxy mode) or session not initialized.'); // session is not initialized code here - - $.get( __myself.pz2String, + + var request = new pzHttpRequest(__myself.pz2String, __myself.errorHandler); + request.get( { "command": "ping", "session": __myself.sessionID }, function(data) { if ( data.getElementsByTagName("status")[0].childNodes[0].nodeValue == "OK" ) { @@ -142,7 +199,7 @@ pz2.prototype = { } ); }, - search: function(query, num, sort, filter) + search: function (query, num, sort, filter, showfrom) { clearTimeout(__myself.statTimer); clearTimeout(__myself.showTimer); @@ -151,50 +208,63 @@ pz2.prototype = { __myself.showCounter = 0; __myself.termCounter = 0; + __myself.bytargetCounter = 0; + __myself.statCounter = 0; + // no proxy mode if( !__myself.initStatusOK ) - return; + throw new Error('Pz2.js: session not initialized.'); if( query !== undefined ) __myself.currQuery = query; else - throw new Error("You need to supply query to the search command"); - - if( filter !== undefined ) - var searchParams = { "command": "search", "session": __myself.sessionID, "query": __myself.currQuery, "filter": filter }; + throw new Error("Pz2.js: no query supplied to the search command."); + + if ( showfrom !== undefined ) + var start = showfrom; else - var searchParams = { "command": "search", "session": __myself.sessionID, "query": __myself.currQuery }; + var start = 0; - $.get( __myself.pz2String, + var searchParams = { "command": "search", "query": __myself.currQuery, "session": __myself.sessionID }; + + if (filter !== undefined) + searchParams["filter"] = filter; + + var request = new pzHttpRequest(__myself.pz2String, __myself.errorHandler); + request.get( searchParams, function(data) { if ( data.getElementsByTagName("status")[0].childNodes[0].nodeValue == "OK" ) { __myself.searchStatusOK = true; //piggyback search - __myself.show(0, num, sort); + __myself.show(start, num, sort); if ( __myself.statCallback ) - __myself.statTimer = setTimeout("__myself.stat()", __myself.statTime / 2); + __myself.stat(); + //__myself.statTimer = setTimeout("__myself.stat()", __myself.statTime / 4); if ( __myself.termlistCallback ) - //__myself.termlist(); - __myself.termTimer = setTimeout("__myself.termlist()", __myself.termTime / 2); + __myself.termlist(); + //__myself.termTimer = setTimeout("__myself.termlist()", __myself.termTime / 4); if ( __myself.bytargetCallback ) - __myself.bytargetTimer = setTimeout("__myself.bytarget()", __myself.bytargetTime / 2); + __myself.bytarget(); + //__myself.bytargetTimer = setTimeout("__myself.bytarget()", __myself.bytargetTime / 4); } else // if it gets here the http return code was 200 (pz2 errors are 417) // but the response was invalid, it should never occur - setTimeout("__myself.search(__myself.currQuery)", 1000); + setTimeout("__myself.search(__myself.currQuery)", 500); } ); }, stat: function() { - if( !__myself.searchStatusOK ) - return; + if( !__myself.initStatusOK ) + throw new Error('Pz2.js: session not initialized.'); + // if called explicitly takes precedence clearTimeout(__myself.statTimer); - - $.get( __myself.pz2String, + + var request = new pzHttpRequest(__myself.pz2String, __myself.errorHandler); + request.get( { "command": "stat", "session": __myself.sessionID }, function(data) { if ( data.getElementsByTagName("stat") ) { @@ -212,9 +282,12 @@ pz2.prototype = { "failed": Number( data.getElementsByTagName("failed")[0].childNodes[0].nodeValue ), "error": Number( data.getElementsByTagName("error")[0].childNodes[0].nodeValue ) }; + + __myself.statCounter++; + var delay = __myself.statTime + __myself.statCounter * __myself.dumpFactor; + if ( activeClients > 0 ) + __myself.statTimer = setTimeout("__myself.stat()", delay); __myself.statCallback(stat); - if (activeClients > 0) - __myself.statTimer = setTimeout("__myself.stat()", __myself.statTime); } else // if it gets here the http return code was 200 (pz2 errors are 417) @@ -225,8 +298,9 @@ pz2.prototype = { }, show: function(start, num, sort) { - if( !__myself.searchStatusOK ) - return; + if( !__myself.searchStatusOK && __myself.useSessions ) + throw new Error('Pz2.js: show command has to be preceded with a search command.'); + // if called explicitly takes precedence clearTimeout(__myself.showTimer); @@ -236,8 +310,10 @@ pz2.prototype = { __myself.currentStart = Number( start ); if( num !== undefined ) __myself.currentNum = Number( num ); - - $.get( __myself.pz2String, + + var request = new pzHttpRequest(__myself.pz2String, __myself.errorHandler); + var context = this; + request.get( { "command": "show", "session": __myself.sessionID, "start": __myself.currentStart, "num": __myself.currentNum, "sort": __myself.currentSort, "block": 1 }, function(data) { @@ -245,6 +321,7 @@ pz2.prototype = { // first parse the status data send along with records // this is strictly bound to the format var activeClients = Number( data.getElementsByTagName("activeclients")[0].childNodes[0].nodeValue ); + __myself.activeClients = activeClients; var show = { "activeclients": activeClients, "merged": Number( data.getElementsByTagName("merged")[0].childNodes[0].nodeValue ), @@ -272,19 +349,22 @@ pz2.prototype = { } else { var nodeName = hits[i].childNodes[j].nodeName; - var nodeText = hits[i].childNodes[j].firstChild.nodeValue; + var nodeText = 'ERROR' + if ( hits[i].childNodes[j].firstChild ) + nodeText = hits[i].childNodes[j].firstChild.nodeValue; show.hits[i][nodeName] = nodeText; } } } } - __myself.showCallback(show); __myself.showCounter++; var delay = __myself.showTime; if (__myself.showCounter > __myself.showFastCount) - delay *= 2; - if (activeClients > 0) + delay += __myself.showCounter * __myself.dumpFactor; + if ( activeClients > 0 ) __myself.showTimer = setTimeout("__myself.show()", delay); + + __myself.showCallback(show); } else // if it gets here the http return code was 200 (pz2 errors are 417) @@ -293,68 +373,116 @@ pz2.prototype = { } ); }, - record: function(id) + record: function(id, offset, params) { - if( !__myself.searchStatusOK ) - return; + // we may call record with no previous search if in proxy mode + if( !__myself.searchStatusOK && __myself.useSessions) + throw new Error('Pz2.js: record command has to be preceded with a search command.'); + + if ( params == undefined ) + params = {}; + + if ( params.callback != undefined ) { + callback = params.callback; + } else { + callback = __myself.recordCallback; + } + + // what is that? + if ( params['handle'] == undefined ) + handle = {}; + else + handle = params['handle']; if( id !== undefined ) __myself.currRecID = id; + + var request = new pzHttpRequest(__myself.pz2String, __myself.errorHandler); + + var recordParams = { "command": "record", + "session": __myself.sessionID, + "id": __myself.currRecID }; + + if (offset !== undefined) { + recordParams["offset"] = offset; + } - $.get( __myself.pz2String, - { "command": "record", "session": __myself.sessionID, "id": __myself.currRecID }, + if (params.syntax != undefined) { + recordParams['syntax'] = params.syntax; + } + + __myself.currRecOffset = offset; + + request.get( + recordParams, function(data) { var recordNode; var record = new Array(); - if ( recordNode = data.getElementsByTagName("record")[0] ) { - for ( i = 0; i < recordNode.childNodes.length; i++) { - if ( recordNode.childNodes[i].nodeType == Node.ELEMENT_NODE ) { - var nodeName = recordNode.childNodes[i].nodeName; - var nodeText = recordNode.childNodes[i].firstChild.nodeValue; - record[nodeName] = nodeText; + record['xmlDoc'] = data; + if (__myself.currRecOffset !== undefined) { + record['offset'] = __myself.currRecOffset; + callback(record, handle); + } else if ( recordNode = data.getElementsByTagName("record")[0] ) { + // if stylesheet was fetched do not parse the response + if ( __myself.xslDoc ) { + record['recid'] = recordNode.getElementsByTagName("recid")[0].firstChild.nodeValue; + record['xslDoc'] = __myself.xslDoc; + } else { + for ( i = 0; i < recordNode.childNodes.length; i++) { + if ( recordNode.childNodes[i].nodeType == Node.ELEMENT_NODE + && recordNode.childNodes[i].nodeName != 'location' ) { + var nodeName = recordNode.childNodes[i].nodeName; + var nodeText = recordNode.childNodes[i].firstChild.nodeValue; + record[nodeName] = nodeText; + } } - } - // the location is hard coded - var locationNodes = recordNode.getElementsByTagName("location"); - record["location"] = new Array(); - for ( i = 0; i < locationNodes.length; i++ ) { - record["location"][i] = { - "id": locationNodes[i].getAttribute("id"), - "name": locationNodes[i].getAttribute("name") - }; - for ( j = 0; j < locationNodes[i].childNodes.length; j++) { - if ( locationNodes[i].childNodes[j].nodeType == Node.ELEMENT_NODE ) { - var nodeName = locationNodes[i].childNodes[j].nodeName; - var nodeText; - if (locationNodes[i].childNodes[j].firstChild) - nodeText = locationNodes[i].childNodes[j].firstChild.nodeValue; - else - nodeText = ''; - record["location"][i][nodeName] = nodeText; + // the location might be empty!! + var locationNodes = recordNode.getElementsByTagName("location"); + record["location"] = new Array(); + for ( i = 0; i < locationNodes.length; i++ ) { + record["location"][i] = { + "id": locationNodes[i].getAttribute("id"), + "name": locationNodes[i].getAttribute("name") + }; + + for ( j = 0; j < locationNodes[i].childNodes.length; j++) { + if ( locationNodes[i].childNodes[j].nodeType == Node.ELEMENT_NODE ) { + var nodeName = locationNodes[i].childNodes[j].nodeName; + var nodeText = ''; + if (locationNodes[i].childNodes[j].firstChild) + nodeText = locationNodes[i].childNodes[j].firstChild.nodeValue; + record["location"][i][nodeName] = nodeText; + } } } } - __myself.recordCallback(record); + + callback(record, handle); } else // if it gets here the http return code was 200 (pz2 errors are 417) // but the response was invalid, it should never occur - setTimeout("__myself.record(__myself.currRecID)", 1000); + setTimeout("__myself.record(__myself.currRecID)", 500); } ); }, + termlist: function() { - if( !__myself.searchStatusOK ) - return; + if( !__myself.searchStatusOK && __.myself.useSessions ) + throw new Error('Pz2.js: termlist command has to be preceded with a search command.'); + // if called explicitly takes precedence clearTimeout(__myself.termTimer); - - $.get( __myself.pz2String, + + var request = new pzHttpRequest(__myself.pz2String, __myself.errorHandler); + request.get( { "command": "termlist", "session": __myself.sessionID, "name": __myself.termKeys }, function(data) { if ( data.getElementsByTagName("termlist") ) { - var termList = { "activeclients": Number( data.getElementsByTagName("activeclients")[0].childNodes[0].nodeValue ) }; + var activeClients = Number( data.getElementsByTagName("activeclients")[0].childNodes[0].nodeValue ); + __myself.activeClients = activeClients; + var termList = { "activeclients": activeClients }; var termLists = data.getElementsByTagName("list"); //for each termlist for (i = 0; i < termLists.length; i++) { @@ -364,8 +492,10 @@ pz2.prototype = { //for each term in the list for (j = 0; j < terms.length; j++) { var term = { - "name": terms[j].getElementsByTagName("name")[0].childNodes[0].nodeValue, - "freq": terms[j].getElementsByTagName("frequency")[0].childNodes[0].nodeValue + "name": (terms[j].getElementsByTagName("name")[0].childNodes.length + ? terms[j].getElementsByTagName("name")[0].childNodes[0].nodeValue + : 'ERROR'), + "freq": terms[j].getElementsByTagName("frequency")[0].childNodes[0].nodeValue || 'ERROR' }; var termIdNode = terms[j].getElementsByTagName("id"); @@ -376,10 +506,12 @@ pz2.prototype = { } } - __myself.termlistCallback(termList); __myself.termCounter++; - if (termList["activeclients"] > 0) - __myself.termTimer = setTimeout("__myself.termlist()", (__myself.termTime + __myself.termCounter*__myself.dumpFactor)); + var delay = __myself.termTime + __myself.termCounter * __myself.dumpFactor; + if ( activeClients > 0 ) + __myself.termTimer = setTimeout("__myself.termlist()", delay); + + __myself.termlistCallback(termList); } else // if it gets here the http return code was 200 (pz2 errors are 417) @@ -391,12 +523,18 @@ pz2.prototype = { }, bytarget: function() { + if( !__myself.initStatusOK && __myself.useSessions ) + throw new Error('Pz2.js: bytarget command has to be preceded with a search command.'); + + // no need to continue if( !__myself.searchStatusOK ) return; + // if called explicitly takes precedence clearTimeout(__myself.bytargetTimer); - - $.get( __myself.pz2String, + + var request = new pzHttpRequest(__myself.pz2String, __myself.errorHandler); + request.get( { "command": "bytarget", "session": __myself.sessionID }, function(data) { if ( data.getElementsByTagName("status")[0].childNodes[0].nodeValue == "OK" ) { @@ -412,9 +550,13 @@ pz2.prototype = { } } } - __myself.bytargetCallback(bytarget); + + __myself.bytargetCounter++; + var delay = __myself.bytargetTime + __myself.bytargetCounter * __myself.dumpFactor; if ( __myself.activeClients > 0 ) - __myself.bytargetTimer = setTimeout("__myself.bytarget()", __myself.bytargetTime); + __myself.bytargetTimer = setTimeout("__myself.bytarget()", delay); + + __myself.bytargetCallback(bytarget); } else // if it gets here the http return code was 200 (pz2 errors are 417) @@ -423,12 +565,14 @@ pz2.prototype = { } ); }, + // just for testing, probably shouldn't be here showNext: function(page) { var step = page || 1; __myself.show( ( step * __myself.currentNum ) + __myself.currentStart ); }, + showPrev: function(page) { if (__myself.currentStart == 0 ) @@ -437,10 +581,378 @@ pz2.prototype = { var newStart = __myself.currentStart - (step * __myself.currentNum ); __myself.show( newStart > 0 ? newStart : 0 ); }, + showPage: function(pageNum) { //var page = pageNum || 1; __myself.show(pageNum * __myself.currentNum); } }; + +/* +********************************************************************************* +** AJAX HELPER CLASS ************************************************************ +********************************************************************************* +*/ +var pzHttpRequest = function ( url, errorHandler ) { + this.request = null; + this.url = url; + this.errorHandler = errorHandler || null; + this.async = true; + + if ( window.XMLHttpRequest ) { + this.request = new XMLHttpRequest(); + } else if ( window.ActiveXObject ) { + try { + this.request = new ActiveXObject( 'Msxml2.XMLHTTP' ); + } catch (err) { + this.request = new ActiveXObject( 'Microsoft.XMLHTTP' ); + } + } +}; + +pzHttpRequest.prototype = +{ + get: function ( params, callback ) + { + this._send( 'GET', params, '', callback ); + }, + + post: function ( params, data, callback ) + { + this._send( 'POST', params, data, callback ); + }, + + load: function () + { + this.async = false; + this.request.open( 'GET', this.url, this.async ); + this.request.send(''); + if ( this.request.status == 200 ) + return this.request.responseXML; + }, + + _send: function ( type, params, data, callback ) + { + this.callback = callback; + var context = this; + this.async = true; + this.request.open( type, this._urlAppendParams(params), this.async ); + this.request.onreadystatechange = function () { + context._handleResponse(); + } + this.request.send(data); + }, + + _urlAppendParams: function (params) + { + var getUrl = this.url; + + var sep = '?'; + var el = params; + for (var key in el) { + if (el[key] != null) { + getUrl += sep + key + '=' + encodeURI(el[key]); + sep = '&'; + } + } + return getUrl; + }, + + _handleResponse: function () + { + if ( this.request.readyState == 4 ) { + // pick up pazpr2 errors first + if ( this.request.responseXML + && this.request.responseXML.documentElement.nodeName == 'error' + && this.request.responseXML.getElementsByTagName("error").length ) { + var errAddInfo = this.request.responseXML.getElementsByTagName("error")[0].childNodes[0].nodeValue; + var errMsg = this.request.responseXML.getElementsByTagName("error")[0].getAttribute("msg"); + var errCode = this.request.responseXML.getElementsByTagName("error")[0].getAttribute("code"); + + var err = new Error(errMsg + ': ' + errAddInfo); + err.code = errCode; + + if (this.errorHandler) { + this.errorHandler(err); + } + else { + throw err; + } + } else if ( this.request.status == 200 ) { + this.callback( this.request.responseXML ); + } else { + var err = new Error("Pz2.js: HTTP request error (AJAX). Code: " + + this.request.status + " Info: " + + this.request.statusText ); + err.code = 'HTTP'; + + if (this.errorHandler) { + this.errorHandler(err); + } + else { + throw err; + } + } + } + } +}; + +/* +********************************************************************************* +** XML HELPER CLASS ************************************************************ +********************************************************************************* +*/ + +// DOMDocument + +if ( window.ActiveXObject) { + var DOMDoc = document; +} else { + var DOMDoc = Document.prototype; +} + +DOMDoc.newXmlDoc = function ( root ) +{ + var doc; + + if (document.implementation && document.implementation.createDocument) { + doc = document.implementation.createDocument('', root, null); + } else if ( window.ActiveXObject ) { + doc = new ActiveXObject("MSXML2.DOMDocument"); + doc.loadXML('<' + root + '/>'); + } else { + throw new Error ('No XML support in this browser'); + } + + return doc; +} + + +DOMDoc.parseXmlFromString = function ( xmlString ) +{ + var doc; + + if ( window.DOMParser ) { + var parser = new DOMParser(); + doc = parser.parseFromString( xmlString, "text/xml"); + } else if ( window.ActiveXObject ) { + doc = new ActiveXObject("MSXML2.DOMDocument"); + doc.loadXML( xmlString ); + } else { + throw new Error ("No XML parsing support in this browser."); + } + + return doc; +} + +// DOMElement + +Element_removeFromDoc = function (DOM_Element) +{ + DOM_Element.parentNode.removeChild(DOM_Element); +} + +Element_emptyChildren = function (DOM_Element) +{ + while( DOM_Element.firstChild ) { + DOM_Element.removeChild( DOM_Element.firstChild ) + } +} + +Element_appendTransformResult = function ( DOM_Element, xmlDoc, xslDoc ) +{ + if ( window.XSLTProcessor ) { + var proc = new XSLTProcessor(); + proc.importStylesheet( xslDoc ); + var docFrag = false; + docFrag = proc.transformToFragment( xmlDoc, DOM_Element.ownerDocument ); + DOM_Element.appendChild(docFrag); + } else if ( window.ActiveXObject ) { + DOM_Element.innerHTML = xmlDoc.transformNode( xslDoc ); + } else { + alert( 'Unable to perform XSLT transformation in this browser' ); + } +} + +Element_appendTextNode = function (DOM_Element, tagName, textContent ) +{ + var node = DOM_Element.ownerDocument.createElement(tagName); + var text = DOM_Element.ownerDocument.createTextNode(textContent); + + DOM_Element.appendChild(node); + node.appendChild(text); + + return node; +} + +Element_setTextContent = function ( DOM_Element, textContent ) +{ + if (typeof DOM_Element.textContent !== "undefined") { + DOM_Element.textContent = textContent; + } else if (typeof DOM_Element.innerText !== "undefined" ) { + DOM_Element.innerText = textContent; + } else { + throw new Error("Cannot set text content of the node, no such method."); + } +} + +Element_getTextContent = function (DOM_Element) +{ + if ( typeof DOM_Element.textContent != 'undefined' ) { + return DOM_Element.textContent; + } else if (DOM_Element.text ) { + return DOM_Element.text; + } else { + throw new Error("Cannot get text content of the node, no such method."); + } +} + +/* +********************************************************************************* +** QUERY CLASS ****************************************************************** +********************************************************************************* +*/ +var pzQuery = function() +{ + this.simpleQuery = ''; + this.singleFilter = null; + this.advTerms = new Array(); + this.filterHash = new Array(); + this.numTerms = 0; + this.filterNums = 0; +}; +pzQuery.prototype = { + reset: function() + { + this.simpleQuery = ''; + this.advTerms = new Array(); + this.simpleFilter = null; + this.numTerms = 0; + }, + clearSimpleQuery: function() + { + this.simpleQuery = ''; + }, + addTerm: function(field, value) + { + var term = {"field": field, "value": value}; + this.advTerms[this.numTerms] = term; + this.numTerms++; + }, + getTermValueByIdx: function(index) + { + return this.advTerms[index].value; + }, + getTermFieldByIdx: function(index) + { + return this.advTerms[index].field; + }, + /* semicolon separated list of terms for given field*/ + getTermsByField: function(field) + { + var terms = ''; + for(var i = 0; i < this.advTerms.length; i++) + { + if( this.advTerms[i].field == field ) + terms = terms + this.queryHas[i].value + ';'; + } + return terms; + }, + addTermsFromList: function(inputString, field) + { + var inputArr = inputString.split(';'); + for(var i=0; i < inputArr.length; i++) + { + if(inputArr[i].length < 3) continue; + this.advTerms[this.numTerms] = {"field": field, "value": inputArr[i] }; + this.numTerms++; + } + }, + removeTermByIdx: function(index) + { + this.advTerms.splice(index, 1); + this.numTerms--; + }, + toCCL: function() + { + var ccl = ''; + if( this.simpleQuery != '') + ccl = this.simpleQuery; + for(var i = 0; i < this.advTerms.length; i++) + { + if (ccl != '') ccl = ccl + ' and '; + ccl = ccl + this.advTerms[i].field+'="'+this.advTerms[i].value+'"'; + } + return ccl; + }, + addFilter: function(name, value) + { + var filter = {"name": name, "id": value }; + this.filterHash[this.filterHash.length] = filter; + this.filterNums++ + return this.filterHash.length - 1; + }, + setFilter: function(name, value) + { + this.filterHash = new Array(); + this.filterNums = 0; + this.addFilter(name, value); + }, + getFilter: function(index) + { + return this.filterHash[index].id; + }, + getFilterName: function(index) + { + return this.filterHash[index].name; + }, + removeFilter: function(index) + { + delete this.filterHash[index]; + this.filterNums--; + }, + clearFilter: function() + { + this.filterHash = new Array(); + this.filterNums = 0; + }, + getFilterString: function() + { + //temporary + if( this.singleFilter != null ) { + return 'pz:id='+this.singleFilter.id; + } + else if( this.filterNums <= 0 ) { + return undefined; + } + + var filter = 'pz:id='; + for(var i = 0; i < this.filterHash.length; i++) + { + if (this.filterHash[i] == undefined) continue; + if (filter > 'pz:id=') filter = filter + '|'; + filter += this.filterHash[i].id; + } + return filter; + }, + totalLength: function() + { + var simpleLength = this.simpleQuery != '' ? 1 : 0; + return this.advTerms.length + simpleLength; + }, + clearSingleFilter: function() + { + this.singleFilter = null; + }, + setSingleFilter: function(name, value) + { + this.singleFilter = {"name": name, "id": value }; + }, + getSingleFilterName: function() + { + return this.singleFilter.name; + } +} + }