From: Mike Taylor Date: Fri, 14 Jun 2013 15:57:11 +0000 (+0100) Subject: Oops, deleted the wrong copy X-Git-Tag: 0.9.1~619 X-Git-Url: http://sru.miketaylor.org.uk/?a=commitdiff_plain;h=e79716b1fbd97009a89db659ab95d72831d7d765;p=mkws-moved-to-github.git Oops, deleted the wrong copy --- diff --git a/experiments/spclient/pz2.js b/experiments/spclient/pz2.js deleted file mode 100644 index 309ad1e..0000000 --- a/experiments/spclient/pz2.js +++ /dev/null @@ -1,1110 +0,0 @@ -/* - * $Id: 3a9980787bb5d0fe966140b243a4a5eb6768913e $ -** pz2.js - pazpar2's javascript client library. -*/ - -//since explorer is flawed -if (!window['Node']) { - window.Node = new Object(); - Node.ELEMENT_NODE = 1; - Node.ATTRIBUTE_NODE = 2; - Node.TEXT_NODE = 3; - Node.CDATA_SECTION_NODE = 4; - Node.ENTITY_REFERENCE_NODE = 5; - Node.ENTITY_NODE = 6; - Node.PROCESSING_INSTRUCTION_NODE = 7; - Node.COMMENT_NODE = 8; - Node.DOCUMENT_NODE = 9; - Node.DOCUMENT_TYPE_NODE = 10; - Node.DOCUMENT_FRAGMENT_NODE = 11; - Node.NOTATION_NODE = 12; -} - -// prevent execution of more than once -if(typeof window.pz2 == "undefined") { -window.undefined = window.undefined; - -var pz2 = function ( paramArray ) -{ - - // at least one callback required - if ( !paramArray ) - throw new Error("Pz2.js: Array with parameters has to be supplied."); - - //supported pazpar2's protocol version - this.suppProtoVer = '1'; - if (typeof paramArray.pazpar2path != "undefined") - this.pz2String = paramArray.pazpar2path; - else - this.pz2String = "/pazpar2/search.pz2"; - this.useSessions = true; - - this.stylesheet = paramArray.detailstylesheet || null; - //load stylesheet if required in async mode - if( this.stylesheet ) { - var context = this; - var request = new pzHttpRequest( this.stylesheet ); - request.get( {}, function ( doc ) { context.xslDoc = doc; } ); - } - - this.errorHandler = paramArray.errorhandler || null; - this.showResponseType = paramArray.showResponseType || "xml"; - - // function callbacks - this.initCallback = paramArray.oninit || null; - this.statCallback = paramArray.onstat || null; - this.showCallback = paramArray.onshow || null; - this.termlistCallback = paramArray.onterm || null; - this.recordCallback = paramArray.onrecord || null; - this.bytargetCallback = paramArray.onbytarget || null; - this.resetCallback = paramArray.onreset || null; - - // termlist keys - this.termKeys = paramArray.termlist || "subject"; - - // some configurational stuff - this.keepAlive = 50000; - - if ( paramArray.keepAlive < this.keepAlive ) - this.keepAlive = paramArray.keepAlive; - - this.sessionID = null; - this.serviceId = paramArray.serviceId || null; - this.initStatusOK = false; - this.pingStatusOK = false; - this.searchStatusOK = false; - - // for sorting - this.currentSort = "relevance"; - - // where are we? - this.currentStart = 0; - // currentNum can be overwritten in show - this.currentNum = 20; - - // last full record retrieved - this.currRecID = null; - - // current query - this.currQuery = null; - - //current raw record offset - this.currRecOffset = null; - - //timers - this.pingTimer = null; - this.statTime = paramArray.stattime || 1000; - this.statTimer = null; - this.termTime = paramArray.termtime || 1000; - this.termTimer = null; - this.showTime = paramArray.showtime || 1000; - this.showTimer = null; - this.showFastCount = 4; - this.bytargetTime = paramArray.bytargettime || 1000; - this.bytargetTimer = null; - this.recordTime = paramArray.recordtime || 500; - this.recordTimer = null; - - // counters for each command and applied delay - this.dumpFactor = 500; - this.showCounter = 0; - this.termCounter = 0; - this.statCounter = 0; - this.bytargetCounter = 0; - this.recordCounter = 0; - - // active clients, updated by stat and show - // might be an issue since bytarget will poll accordingly - this.activeClients = 1; - - // if in proxy mode no need to init - if (paramArray.usesessions != undefined) { - this.useSessions = paramArray.usesessions; - this.initStatusOK = true; - } - // else, auto init session or wait for a user init? - if (this.useSessions && paramArray.autoInit !== false) { - this.init(this.sessionID, this.serviceId); - } - // Version parameter - this.version = paramArray.version || null; -}; - -pz2.prototype = -{ - //error handler for async error throws - throwError: function (errMsg, errCode) - { - var err = new Error(errMsg); - if (errCode) err.code = errCode; - - if (this.errorHandler) { - this.errorHandler(err); - } - else { - throw err; - } - }, - - // stop activity by clearing tiemouts - stop: function () - { - clearTimeout(this.statTimer); - clearTimeout(this.showTimer); - clearTimeout(this.termTimer); - clearTimeout(this.bytargetTimer); - }, - - // reset status variables - reset: function () - { - if ( this.useSessions ) { - this.sessionID = null; - this.initStatusOK = false; - this.pingStatusOK = false; - clearTimeout(this.pingTimer); - } - this.searchStatusOK = false; - this.stop(); - - if ( this.resetCallback ) - this.resetCallback(); - }, - - init: function (sessionId, serviceId) - { - this.reset(); - - // session id as a param - if (sessionId && this.useSessions ) { - this.initStatusOK = true; - this.sessionID = sessionId; - this.ping(); - // old school direct pazpar2 init - } else if (this.useSessions) { - var context = this; - var request = new pzHttpRequest(this.pz2String, this.errorHandler); - var opts = {'command' : 'init'}; - if (serviceId) opts.service = serviceId; - request.safeGet( - opts, - function(data) { - if ( data.getElementsByTagName("status")[0] - .childNodes[0].nodeValue == "OK" ) { - if ( data.getElementsByTagName("protocol")[0] - .childNodes[0].nodeValue - != context.suppProtoVer ) - throw new Error( - "Server's protocol not supported by the client" - ); - context.initStatusOK = true; - context.sessionID = - data.getElementsByTagName("session")[0] - .childNodes[0].nodeValue; - if (data.getElementsByTagName("keepAlive").length > 0) { - context.keepAlive = data.getElementsByTagName("keepAlive")[0].childNodes[0].nodeValue; - } - context.pingTimer = - setTimeout( - function () { - context.ping(); - }, - context.keepAlive - ); - if ( context.initCallback ) - context.initCallback(); - } - else - context.throwError('Init failed. Malformed WS resonse.', - 110); - } - ); - // when through proxy no need to init - } else { - this.initStatusOK = true; - } - }, - // no need to ping explicitly - ping: function () - { - // pinging only makes sense when using pazpar2 directly - if( !this.initStatusOK || !this.useSessions ) - throw new Error( - 'Pz2.js: Ping not allowed (proxy mode) or session not initialized.' - ); - var context = this; - - clearTimeout(context.pingTimer); - - var request = new pzHttpRequest(this.pz2String, this.errorHandler); - request.safeGet( - { "command": "ping", "session": this.sessionID, "windowid" : window.name }, - function(data) { - if ( data.getElementsByTagName("status")[0] - .childNodes[0].nodeValue == "OK" ) { - context.pingStatusOK = true; - context.pingTimer = - setTimeout( - function () { - context.ping(); - }, - context.keepAlive - ); - } - else - context.throwError('Ping failed. Malformed WS resonse.', - 111); - } - ); - }, - search: function (query, num, sort, filter, showfrom, addParamsArr) - { - clearTimeout(this.statTimer); - clearTimeout(this.showTimer); - clearTimeout(this.termTimer); - clearTimeout(this.bytargetTimer); - - this.showCounter = 0; - this.termCounter = 0; - this.bytargetCounter = 0; - this.statCounter = 0; - this.activeClients = 1; - - // no proxy mode - if( !this.initStatusOK ) - throw new Error('Pz2.js: session not initialized.'); - - if( query !== undefined ) - this.currQuery = query; - else - throw new Error("Pz2.js: no query supplied to the search command."); - - if ( showfrom !== undefined ) - var start = showfrom; - else - var start = 0; - - var searchParams = { - "command": "search", - "query": this.currQuery, - "session": this.sessionID, - "windowid" : window.name - }; - - if( sort !== undefined ) { - this.currentSort = sort; - searchParams["sort"] = sort; - } - if (filter !== undefined) - searchParams["filter"] = filter; - - // copy additional parmeters, do not overwrite - if (addParamsArr != undefined) { - for (var prop in addParamsArr) { - if (!searchParams.hasOwnProperty(prop)) - searchParams[prop] = addParamsArr[prop]; - } - } - - var context = this; - var request = new pzHttpRequest(this.pz2String, this.errorHandler); - request.safeGet( - searchParams, - function(data) { - if ( data.getElementsByTagName("status")[0] - .childNodes[0].nodeValue == "OK" ) { - context.searchStatusOK = true; - //piggyback search - context.show(start, num, sort); - if (context.statCallback) - context.stat(); - if (context.termlistCallback) - context.termlist(); - if (context.bytargetCallback) - context.bytarget(); - } - else - context.throwError('Search failed. Malformed WS resonse.', - 112); - } - ); - }, - stat: function() - { - if( !this.initStatusOK ) - throw new Error('Pz2.js: session not initialized.'); - - // if called explicitly takes precedence - clearTimeout(this.statTimer); - - var context = this; - var request = new pzHttpRequest(this.pz2String, this.errorHandler); - request.safeGet( - { "command": "stat", "session": this.sessionID, "windowid" : window.name }, - function(data) { - if ( data.getElementsByTagName("stat") ) { - var activeClients = - Number( data.getElementsByTagName("activeclients")[0] - .childNodes[0].nodeValue ); - context.activeClients = activeClients; - - var stat = Element_parseChildNodes(data.documentElement); - - context.statCounter++; - var delay = context.statTime - + context.statCounter * context.dumpFactor; - - if ( activeClients > 0 ) - context.statTimer = - setTimeout( - function () { - context.stat(); - }, - delay - ); - context.statCallback(stat); - } - else - context.throwError('Stat failed. Malformed WS resonse.', - 113); - } - ); - }, - show: function(start, num, sort, query_state) - { - if( !this.searchStatusOK && this.useSessions ) - throw new Error( - 'Pz2.js: show command has to be preceded with a search command.' - ); - - // if called explicitly takes precedence - clearTimeout(this.showTimer); - - if( sort !== undefined ) - this.currentSort = sort; - if( start !== undefined ) - this.currentStart = Number( start ); - if( num !== undefined ) - this.currentNum = Number( num ); - - var context = this; - var request = new pzHttpRequest(this.pz2String, this.errorHandler); - var requestParameters = - { - "command": "show", - "session": this.sessionID, - "start": this.currentStart, - "num": this.currentNum, - "sort": this.currentSort, - "block": 1, - "type": this.showResponseType, - "windowid" : window.name - }; - if (query_state) - requestParameters["query-state"] = query_state; - if (this.version && this.version > 0) - requestParameters["version"] = this.version; - request.safeGet( - requestParameters, - function(data, type) { - var show = null; - var activeClients = 0; - if (type === "json") { - show = {}; - activeClients = Number(data.activeclients[0]); - show.activeclients = activeClients; - show.merged = Number(data.merged[0]); - show.total = Number(data.total[0]); - show.start = Number(data.start[0]); - show.num = Number(data.num[0]); - show.hits = data.hit; - } else if (data.getElementsByTagName("status")[0] - .childNodes[0].nodeValue == "OK") { - // first parse the status data send along with records - // this is strictly bound to the format - activeClients = - Number(data.getElementsByTagName("activeclients")[0] - .childNodes[0].nodeValue); - show = { - "activeclients": activeClients, - "merged": - Number( data.getElementsByTagName("merged")[0] - .childNodes[0].nodeValue ), - "total": - Number( data.getElementsByTagName("total")[0] - .childNodes[0].nodeValue ), - "start": - Number( data.getElementsByTagName("start")[0] - .childNodes[0].nodeValue ), - "num": - Number( data.getElementsByTagName("num")[0] - .childNodes[0].nodeValue ), - "hits": [] - }; - // parse all the first-level nodes for all tags - var hits = data.getElementsByTagName("hit"); - for (i = 0; i < hits.length; i++) - show.hits[i] = Element_parseChildNodes(hits[i]); - } else { - context.throwError('Show failed. Malformed WS resonse.', - 114); - }; - - var approxNode = data.getElementsByTagName("approximation"); - if (approxNode && approxNode[0] && approxNode[0].childNodes[0] && approxNode[0].childNodes[0].nodeValue) - show['approximation'] = - Number( approxNode[0].childNodes[0].nodeValue); - - - data.getElementsByTagName("") - context.activeClients = activeClients; - context.showCounter++; - var delay = context.showTime; - if (context.showCounter > context.showFastCount) - delay += context.showCounter * context.dumpFactor; - if ( activeClients > 0 ) - context.showTimer = setTimeout( - function () { - context.show(); - }, - delay); - context.showCallback(show); - } - ); - }, - record: function(id, offset, syntax, handler) - { - // we may call record with no previous search if in proxy mode - if(!this.searchStatusOK && this.useSessions) - throw new Error( - 'Pz2.js: record command has to be preceded with a search command.' - ); - - if( id !== undefined ) - this.currRecID = id; - - var recordParams = { - "command": "record", - "session": this.sessionID, - "id": this.currRecID, - "windowid" : window.name - }; - - this.currRecOffset = null; - if (offset != undefined) { - recordParams["offset"] = offset; - this.currRecOffset = offset; - } - - if (syntax != undefined) - recordParams['syntax'] = syntax; - - //overwrite default callback id needed - var callback = this.recordCallback; - var args = undefined; - if (handler != undefined) { - callback = handler['callback']; - args = handler['args']; - } - - var context = this; - var request = new pzHttpRequest(this.pz2String, this.errorHandler); - - request.safeGet( - recordParams, - function(data) { - var recordNode; - var record; - //raw record - if (context.currRecOffset !== null) { - record = new Array(); - record['xmlDoc'] = data; - record['offset'] = context.currRecOffset; - callback(record, args); - //pz2 record - } else if ( recordNode = - data.getElementsByTagName("record")[0] ) { - // if stylesheet was fetched do not parse the response - if ( context.xslDoc ) { - record = new Array(); - record['xmlDoc'] = data; - record['xslDoc'] = context.xslDoc; - record['recid'] = - recordNode.getElementsByTagName("recid")[0] - .firstChild.nodeValue; - //parse record - } else { - record = Element_parseChildNodes(recordNode); - } - var activeClients = - Number( data.getElementsByTagName("activeclients")[0] - .childNodes[0].nodeValue ); - context.activeClients = activeClients; - context.recordCounter++; - var delay = context.recordTime + context.recordCounter * context.dumpFactor; - if ( activeClients > 0 ) - context.recordTimer = - setTimeout ( - function() { - context.record(id, offset, syntax, handler); - }, - delay - ); - callback(record, args); - } - else - context.throwError('Record failed. Malformed WS resonse.', - 115); - } - ); - }, - - termlist: function() - { - if( !this.searchStatusOK && this.useSessions ) - throw new Error( - 'Pz2.js: termlist command has to be preceded with a search command.' - ); - - // if called explicitly takes precedence - clearTimeout(this.termTimer); - - var context = this; - var request = new pzHttpRequest(this.pz2String, this.errorHandler); - request.safeGet( - { - "command": "termlist", - "session": this.sessionID, - "name": this.termKeys, - "windowid" : window.name, - "version" : this.version - - }, - function(data) { - if ( data.getElementsByTagName("termlist") ) { - var activeClients = - Number( data.getElementsByTagName("activeclients")[0] - .childNodes[0].nodeValue ); - context.activeClients = activeClients; - var termList = { "activeclients": activeClients }; - var termLists = data.getElementsByTagName("list"); - //for each termlist - for (i = 0; i < termLists.length; i++) { - var listName = termLists[i].getAttribute('name'); - termList[listName] = new Array(); - var terms = termLists[i].getElementsByTagName('term'); - //for each term in the list - for (j = 0; j < terms.length; j++) { - var term = { - "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' - }; - - // Only for xtargets: id, records, filtered - var termIdNode = - terms[j].getElementsByTagName("id"); - if(terms[j].getElementsByTagName("id").length) - term["id"] = - termIdNode[0].childNodes[0].nodeValue; - termList[listName][j] = term; - - var recordsNode = terms[j].getElementsByTagName("records"); - if (recordsNode && recordsNode.length) - term["records"] = recordsNode[0].childNodes[0].nodeValue; - - var filteredNode = terms[j].getElementsByTagName("filtered"); - if (filteredNode && filteredNode.length) - term["filtered"] = filteredNode[0].childNodes[0].nodeValue; - - } - } - - context.termCounter++; - var delay = context.termTime - + context.termCounter * context.dumpFactor; - if ( activeClients > 0 ) - context.termTimer = - setTimeout( - function () { - context.termlist(); - }, - delay - ); - - context.termlistCallback(termList); - } - else - context.throwError('Termlist failed. Malformed WS resonse.', - 116); - } - ); - - }, - bytarget: function() - { - if( !this.initStatusOK && this.useSessions ) - throw new Error( - 'Pz2.js: bytarget command has to be preceded with a search command.' - ); - - // no need to continue - if( !this.searchStatusOK ) - return; - - // if called explicitly takes precedence - clearTimeout(this.bytargetTimer); - - var context = this; - var request = new pzHttpRequest(this.pz2String, this.errorHandler); - request.safeGet( - { - "command": "bytarget", - "session": this.sessionID, - "block": 1, - "windowid" : window.name, - "version" : this.version - }, - function(data) { - if ( data.getElementsByTagName("status")[0] - .childNodes[0].nodeValue == "OK" ) { - var targetNodes = data.getElementsByTagName("target"); - var bytarget = new Array(); - for ( i = 0; i < targetNodes.length; i++) { - bytarget[i] = new Array(); - for( j = 0; j < targetNodes[i].childNodes.length; j++ ) { - if ( targetNodes[i].childNodes[j].nodeType - == Node.ELEMENT_NODE ) { - var nodeName = - targetNodes[i].childNodes[j].nodeName; - if (targetNodes[i].childNodes[j].firstChild != null) - { - var nodeText = targetNodes[i].childNodes[j] - .firstChild.nodeValue; - bytarget[i][nodeName] = nodeText; - } - else { - bytarget[i][nodeName] = ""; - } - - - } - } - if (bytarget[i]["state"]=="Client_Disconnected") { - bytarget[i]["hits"] = "Error"; - } else if (bytarget[i]["state"]=="Client_Error") { - bytarget[i]["hits"] = "Error"; - } else if (bytarget[i]["state"]=="Client_Working") { - bytarget[i]["hits"] = "..."; - } - if (bytarget[i].diagnostic == "1") { - bytarget[i].diagnostic = "Permanent system error"; - } else if (bytarget[i].diagnostic == "2") { - bytarget[i].diagnostic = "Temporary system error"; - } - var targetsSuggestions = targetNodes[i].getElementsByTagName("suggestions"); - if (targetsSuggestions != undefined && targetsSuggestions.length>0) { - var suggestions = targetsSuggestions[0]; - bytarget[i]["suggestions"] = Element_parseChildNodes(suggestions); - } - } - - context.bytargetCounter++; - var delay = context.bytargetTime - + context.bytargetCounter * context.dumpFactor; - if ( context.activeClients > 0 ) - context.bytargetTimer = - setTimeout( - function () { - context.bytarget(); - }, - delay - ); - - context.bytargetCallback(bytarget); - } - else - context.throwError('Bytarget failed. Malformed WS resonse.', - 117); - } - ); - }, - - // just for testing, probably shouldn't be here - showNext: function(page) - { - var step = page || 1; - this.show( ( step * this.currentNum ) + this.currentStart ); - }, - - showPrev: function(page) - { - if (this.currentStart == 0 ) - return false; - var step = page || 1; - var newStart = this.currentStart - (step * this.currentNum ); - this.show( newStart > 0 ? newStart : 0 ); - }, - - showPage: function(pageNum) - { - //var page = pageNum || 1; - this.show(pageNum * this.currentNum); - } -}; - -/* -******************************************************************************** -** AJAX HELPER CLASS *********************************************************** -******************************************************************************** -*/ -var pzHttpRequest = function ( url, errorHandler ) { - this.maxUrlLength = 2048; - this.request = null; - this.url = url; - this.errorHandler = errorHandler || null; - this.async = true; - this.requestHeaders = {}; - - 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 = -{ - safeGet: function ( params, callback ) - { - var encodedParams = this.encodeParams(params); - var url = this._urlAppendParams(encodedParams); - if (url.length >= this.maxUrlLength) { - this.requestHeaders["Content-Type"] - = "application/x-www-form-urlencoded"; - this._send( 'POST', this.url, encodedParams, callback ); - } else { - this._send( 'GET', url, '', callback ); - } - }, - - get: function ( params, callback ) - { - this._send( 'GET', this._urlAppendParams(this.encodeParams(params)), - '', callback ); - }, - - post: function ( params, data, callback ) - { - this._send( 'POST', this._urlAppendParams(this.encodeParams(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; - }, - - encodeParams: function (params) - { - var sep = ""; - var encoded = ""; - for (var key in params) { - if (params[key] != null) { - encoded += sep + key + '=' + encodeURIComponent(params[key]); - sep = '&'; - } - } - return encoded; - }, - - _send: function ( type, url, data, callback) - { - var context = this; - this.callback = callback; - this.async = true; - this.request.open( type, url, this.async ); - for (var key in this.requestHeaders) - this.request.setRequestHeader(key, this.requestHeaders[key]); - this.request.onreadystatechange = function () { - context._handleResponse(url); /// url used ONLY for error reporting - } - this.request.send(data); - }, - - _urlAppendParams: function (encodedParams) - { - if (encodedParams) - return this.url + "?" + encodedParams; - else - return this.url; - }, - - _handleResponse: function (savedUrlForErrorReporting) - { - if ( this.request.readyState == 4 ) { - // pick up appplication errors first - var errNode = null; - if (this.request.responseXML && - (errNode = this.request.responseXML.documentElement) - && errNode.nodeName == 'error') { - var errMsg = errNode.getAttribute("msg"); - var errCode = errNode.getAttribute("code"); - var errAddInfo = ''; - if (errNode.childNodes.length) - errAddInfo = ': ' + errNode.childNodes[0].nodeValue; - - 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.request.responseXML == null) { - if (this.request.responseText != null) { - //assume JSON - - var json = null; - var text = this.request.responseText; - if (typeof window.JSON == "undefined") - json = eval("(" + text + ")"); - else { - try { - json = JSON.parse(text); - } - catch (e) { - // Safari: eval will fail as well. Considering trying JSON2 (non-native implementation) instead - /* DEBUG only works in mk2-mobile - if (document.getElementById("log")) - document.getElementById("log").innerHTML = "" + e + " " + length + ": " + text; - */ - try { - json = eval("(" + text + ")"); - } - catch (e) { - /* DEBUG only works in mk2-mobile - if (document.getElementById("log")) - document.getElementById("log").innerHTML = "" + e + " " + length + ": " + text; - */ - } - } - } - this.callback(json, "json"); - } else { - var err = new Error("XML response is empty but no error " + - "for " + savedUrlForErrorReporting); - err.code = -1; - 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("HTTP response not OK: " - + this.request.status + " - " - + this.request.statusText ); - err.code = '00' + this.request.status; - if (this.errorHandler) { - this.errorHandler(err); - } - else { - throw err; - } - } - } - } -}; - -/* -******************************************************************************** -** XML HELPER FUNCTIONS ******************************************************** -******************************************************************************** -*/ - -// 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; -} - -DOMDoc.transformToDoc = function (xmlDoc, xslDoc) -{ - if ( window.XSLTProcessor ) { - var proc = new XSLTProcessor(); - proc.importStylesheet( xslDoc ); - return proc.transformToDocument(xmlDoc); - } else if ( window.ActiveXObject ) { - return document.parseXmlFromString(xmlDoc.transformNode(xslDoc)); - } else { - alert( 'Unable to perform XSLT transformation in this browser' ); - } -} - -// 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 (typeof DOM_Element.text != 'undefined') { - return DOM_Element.text; - } else { - throw new Error("Cannot get text content of the node, no such method."); - } -} - -Element_parseChildNodes = function (node) -{ - var parsed = {}; - var hasChildElems = false; - var textContent = ''; - - if (node.hasChildNodes()) { - var children = node.childNodes; - for (var i = 0; i < children.length; i++) { - var child = children[i]; - switch (child.nodeType) { - case Node.ELEMENT_NODE: - hasChildElems = true; - var nodeName = child.nodeName; - if (!(nodeName in parsed)) - parsed[nodeName] = []; - parsed[nodeName].push(Element_parseChildNodes(child)); - break; - case Node.TEXT_NODE: - textContent += child.nodeValue; - break; - case Node.CDATA_SECTION_NODE: - textContent += child.nodeValue; - break; - } - } - } - - var attrs = node.attributes; - for (var i = 0; i < attrs.length; i++) { - hasChildElems = true; - var attrName = '@' + attrs[i].nodeName; - var attrValue = attrs[i].nodeValue; - parsed[attrName] = attrValue; - } - - // if no nested elements/attrs set value to text - if (hasChildElems) - parsed['#text'] = textContent; - else - parsed = textContent; - - return parsed; -} - -/* do not remove trailing bracket */ -} diff --git a/experiments/spdemo/pz2.js b/experiments/spdemo/pz2.js new file mode 100644 index 0000000..309ad1e --- /dev/null +++ b/experiments/spdemo/pz2.js @@ -0,0 +1,1110 @@ +/* + * $Id: 3a9980787bb5d0fe966140b243a4a5eb6768913e $ +** pz2.js - pazpar2's javascript client library. +*/ + +//since explorer is flawed +if (!window['Node']) { + window.Node = new Object(); + Node.ELEMENT_NODE = 1; + Node.ATTRIBUTE_NODE = 2; + Node.TEXT_NODE = 3; + Node.CDATA_SECTION_NODE = 4; + Node.ENTITY_REFERENCE_NODE = 5; + Node.ENTITY_NODE = 6; + Node.PROCESSING_INSTRUCTION_NODE = 7; + Node.COMMENT_NODE = 8; + Node.DOCUMENT_NODE = 9; + Node.DOCUMENT_TYPE_NODE = 10; + Node.DOCUMENT_FRAGMENT_NODE = 11; + Node.NOTATION_NODE = 12; +} + +// prevent execution of more than once +if(typeof window.pz2 == "undefined") { +window.undefined = window.undefined; + +var pz2 = function ( paramArray ) +{ + + // at least one callback required + if ( !paramArray ) + throw new Error("Pz2.js: Array with parameters has to be supplied."); + + //supported pazpar2's protocol version + this.suppProtoVer = '1'; + if (typeof paramArray.pazpar2path != "undefined") + this.pz2String = paramArray.pazpar2path; + else + this.pz2String = "/pazpar2/search.pz2"; + this.useSessions = true; + + this.stylesheet = paramArray.detailstylesheet || null; + //load stylesheet if required in async mode + if( this.stylesheet ) { + var context = this; + var request = new pzHttpRequest( this.stylesheet ); + request.get( {}, function ( doc ) { context.xslDoc = doc; } ); + } + + this.errorHandler = paramArray.errorhandler || null; + this.showResponseType = paramArray.showResponseType || "xml"; + + // function callbacks + this.initCallback = paramArray.oninit || null; + this.statCallback = paramArray.onstat || null; + this.showCallback = paramArray.onshow || null; + this.termlistCallback = paramArray.onterm || null; + this.recordCallback = paramArray.onrecord || null; + this.bytargetCallback = paramArray.onbytarget || null; + this.resetCallback = paramArray.onreset || null; + + // termlist keys + this.termKeys = paramArray.termlist || "subject"; + + // some configurational stuff + this.keepAlive = 50000; + + if ( paramArray.keepAlive < this.keepAlive ) + this.keepAlive = paramArray.keepAlive; + + this.sessionID = null; + this.serviceId = paramArray.serviceId || null; + this.initStatusOK = false; + this.pingStatusOK = false; + this.searchStatusOK = false; + + // for sorting + this.currentSort = "relevance"; + + // where are we? + this.currentStart = 0; + // currentNum can be overwritten in show + this.currentNum = 20; + + // last full record retrieved + this.currRecID = null; + + // current query + this.currQuery = null; + + //current raw record offset + this.currRecOffset = null; + + //timers + this.pingTimer = null; + this.statTime = paramArray.stattime || 1000; + this.statTimer = null; + this.termTime = paramArray.termtime || 1000; + this.termTimer = null; + this.showTime = paramArray.showtime || 1000; + this.showTimer = null; + this.showFastCount = 4; + this.bytargetTime = paramArray.bytargettime || 1000; + this.bytargetTimer = null; + this.recordTime = paramArray.recordtime || 500; + this.recordTimer = null; + + // counters for each command and applied delay + this.dumpFactor = 500; + this.showCounter = 0; + this.termCounter = 0; + this.statCounter = 0; + this.bytargetCounter = 0; + this.recordCounter = 0; + + // active clients, updated by stat and show + // might be an issue since bytarget will poll accordingly + this.activeClients = 1; + + // if in proxy mode no need to init + if (paramArray.usesessions != undefined) { + this.useSessions = paramArray.usesessions; + this.initStatusOK = true; + } + // else, auto init session or wait for a user init? + if (this.useSessions && paramArray.autoInit !== false) { + this.init(this.sessionID, this.serviceId); + } + // Version parameter + this.version = paramArray.version || null; +}; + +pz2.prototype = +{ + //error handler for async error throws + throwError: function (errMsg, errCode) + { + var err = new Error(errMsg); + if (errCode) err.code = errCode; + + if (this.errorHandler) { + this.errorHandler(err); + } + else { + throw err; + } + }, + + // stop activity by clearing tiemouts + stop: function () + { + clearTimeout(this.statTimer); + clearTimeout(this.showTimer); + clearTimeout(this.termTimer); + clearTimeout(this.bytargetTimer); + }, + + // reset status variables + reset: function () + { + if ( this.useSessions ) { + this.sessionID = null; + this.initStatusOK = false; + this.pingStatusOK = false; + clearTimeout(this.pingTimer); + } + this.searchStatusOK = false; + this.stop(); + + if ( this.resetCallback ) + this.resetCallback(); + }, + + init: function (sessionId, serviceId) + { + this.reset(); + + // session id as a param + if (sessionId && this.useSessions ) { + this.initStatusOK = true; + this.sessionID = sessionId; + this.ping(); + // old school direct pazpar2 init + } else if (this.useSessions) { + var context = this; + var request = new pzHttpRequest(this.pz2String, this.errorHandler); + var opts = {'command' : 'init'}; + if (serviceId) opts.service = serviceId; + request.safeGet( + opts, + function(data) { + if ( data.getElementsByTagName("status")[0] + .childNodes[0].nodeValue == "OK" ) { + if ( data.getElementsByTagName("protocol")[0] + .childNodes[0].nodeValue + != context.suppProtoVer ) + throw new Error( + "Server's protocol not supported by the client" + ); + context.initStatusOK = true; + context.sessionID = + data.getElementsByTagName("session")[0] + .childNodes[0].nodeValue; + if (data.getElementsByTagName("keepAlive").length > 0) { + context.keepAlive = data.getElementsByTagName("keepAlive")[0].childNodes[0].nodeValue; + } + context.pingTimer = + setTimeout( + function () { + context.ping(); + }, + context.keepAlive + ); + if ( context.initCallback ) + context.initCallback(); + } + else + context.throwError('Init failed. Malformed WS resonse.', + 110); + } + ); + // when through proxy no need to init + } else { + this.initStatusOK = true; + } + }, + // no need to ping explicitly + ping: function () + { + // pinging only makes sense when using pazpar2 directly + if( !this.initStatusOK || !this.useSessions ) + throw new Error( + 'Pz2.js: Ping not allowed (proxy mode) or session not initialized.' + ); + var context = this; + + clearTimeout(context.pingTimer); + + var request = new pzHttpRequest(this.pz2String, this.errorHandler); + request.safeGet( + { "command": "ping", "session": this.sessionID, "windowid" : window.name }, + function(data) { + if ( data.getElementsByTagName("status")[0] + .childNodes[0].nodeValue == "OK" ) { + context.pingStatusOK = true; + context.pingTimer = + setTimeout( + function () { + context.ping(); + }, + context.keepAlive + ); + } + else + context.throwError('Ping failed. Malformed WS resonse.', + 111); + } + ); + }, + search: function (query, num, sort, filter, showfrom, addParamsArr) + { + clearTimeout(this.statTimer); + clearTimeout(this.showTimer); + clearTimeout(this.termTimer); + clearTimeout(this.bytargetTimer); + + this.showCounter = 0; + this.termCounter = 0; + this.bytargetCounter = 0; + this.statCounter = 0; + this.activeClients = 1; + + // no proxy mode + if( !this.initStatusOK ) + throw new Error('Pz2.js: session not initialized.'); + + if( query !== undefined ) + this.currQuery = query; + else + throw new Error("Pz2.js: no query supplied to the search command."); + + if ( showfrom !== undefined ) + var start = showfrom; + else + var start = 0; + + var searchParams = { + "command": "search", + "query": this.currQuery, + "session": this.sessionID, + "windowid" : window.name + }; + + if( sort !== undefined ) { + this.currentSort = sort; + searchParams["sort"] = sort; + } + if (filter !== undefined) + searchParams["filter"] = filter; + + // copy additional parmeters, do not overwrite + if (addParamsArr != undefined) { + for (var prop in addParamsArr) { + if (!searchParams.hasOwnProperty(prop)) + searchParams[prop] = addParamsArr[prop]; + } + } + + var context = this; + var request = new pzHttpRequest(this.pz2String, this.errorHandler); + request.safeGet( + searchParams, + function(data) { + if ( data.getElementsByTagName("status")[0] + .childNodes[0].nodeValue == "OK" ) { + context.searchStatusOK = true; + //piggyback search + context.show(start, num, sort); + if (context.statCallback) + context.stat(); + if (context.termlistCallback) + context.termlist(); + if (context.bytargetCallback) + context.bytarget(); + } + else + context.throwError('Search failed. Malformed WS resonse.', + 112); + } + ); + }, + stat: function() + { + if( !this.initStatusOK ) + throw new Error('Pz2.js: session not initialized.'); + + // if called explicitly takes precedence + clearTimeout(this.statTimer); + + var context = this; + var request = new pzHttpRequest(this.pz2String, this.errorHandler); + request.safeGet( + { "command": "stat", "session": this.sessionID, "windowid" : window.name }, + function(data) { + if ( data.getElementsByTagName("stat") ) { + var activeClients = + Number( data.getElementsByTagName("activeclients")[0] + .childNodes[0].nodeValue ); + context.activeClients = activeClients; + + var stat = Element_parseChildNodes(data.documentElement); + + context.statCounter++; + var delay = context.statTime + + context.statCounter * context.dumpFactor; + + if ( activeClients > 0 ) + context.statTimer = + setTimeout( + function () { + context.stat(); + }, + delay + ); + context.statCallback(stat); + } + else + context.throwError('Stat failed. Malformed WS resonse.', + 113); + } + ); + }, + show: function(start, num, sort, query_state) + { + if( !this.searchStatusOK && this.useSessions ) + throw new Error( + 'Pz2.js: show command has to be preceded with a search command.' + ); + + // if called explicitly takes precedence + clearTimeout(this.showTimer); + + if( sort !== undefined ) + this.currentSort = sort; + if( start !== undefined ) + this.currentStart = Number( start ); + if( num !== undefined ) + this.currentNum = Number( num ); + + var context = this; + var request = new pzHttpRequest(this.pz2String, this.errorHandler); + var requestParameters = + { + "command": "show", + "session": this.sessionID, + "start": this.currentStart, + "num": this.currentNum, + "sort": this.currentSort, + "block": 1, + "type": this.showResponseType, + "windowid" : window.name + }; + if (query_state) + requestParameters["query-state"] = query_state; + if (this.version && this.version > 0) + requestParameters["version"] = this.version; + request.safeGet( + requestParameters, + function(data, type) { + var show = null; + var activeClients = 0; + if (type === "json") { + show = {}; + activeClients = Number(data.activeclients[0]); + show.activeclients = activeClients; + show.merged = Number(data.merged[0]); + show.total = Number(data.total[0]); + show.start = Number(data.start[0]); + show.num = Number(data.num[0]); + show.hits = data.hit; + } else if (data.getElementsByTagName("status")[0] + .childNodes[0].nodeValue == "OK") { + // first parse the status data send along with records + // this is strictly bound to the format + activeClients = + Number(data.getElementsByTagName("activeclients")[0] + .childNodes[0].nodeValue); + show = { + "activeclients": activeClients, + "merged": + Number( data.getElementsByTagName("merged")[0] + .childNodes[0].nodeValue ), + "total": + Number( data.getElementsByTagName("total")[0] + .childNodes[0].nodeValue ), + "start": + Number( data.getElementsByTagName("start")[0] + .childNodes[0].nodeValue ), + "num": + Number( data.getElementsByTagName("num")[0] + .childNodes[0].nodeValue ), + "hits": [] + }; + // parse all the first-level nodes for all tags + var hits = data.getElementsByTagName("hit"); + for (i = 0; i < hits.length; i++) + show.hits[i] = Element_parseChildNodes(hits[i]); + } else { + context.throwError('Show failed. Malformed WS resonse.', + 114); + }; + + var approxNode = data.getElementsByTagName("approximation"); + if (approxNode && approxNode[0] && approxNode[0].childNodes[0] && approxNode[0].childNodes[0].nodeValue) + show['approximation'] = + Number( approxNode[0].childNodes[0].nodeValue); + + + data.getElementsByTagName("") + context.activeClients = activeClients; + context.showCounter++; + var delay = context.showTime; + if (context.showCounter > context.showFastCount) + delay += context.showCounter * context.dumpFactor; + if ( activeClients > 0 ) + context.showTimer = setTimeout( + function () { + context.show(); + }, + delay); + context.showCallback(show); + } + ); + }, + record: function(id, offset, syntax, handler) + { + // we may call record with no previous search if in proxy mode + if(!this.searchStatusOK && this.useSessions) + throw new Error( + 'Pz2.js: record command has to be preceded with a search command.' + ); + + if( id !== undefined ) + this.currRecID = id; + + var recordParams = { + "command": "record", + "session": this.sessionID, + "id": this.currRecID, + "windowid" : window.name + }; + + this.currRecOffset = null; + if (offset != undefined) { + recordParams["offset"] = offset; + this.currRecOffset = offset; + } + + if (syntax != undefined) + recordParams['syntax'] = syntax; + + //overwrite default callback id needed + var callback = this.recordCallback; + var args = undefined; + if (handler != undefined) { + callback = handler['callback']; + args = handler['args']; + } + + var context = this; + var request = new pzHttpRequest(this.pz2String, this.errorHandler); + + request.safeGet( + recordParams, + function(data) { + var recordNode; + var record; + //raw record + if (context.currRecOffset !== null) { + record = new Array(); + record['xmlDoc'] = data; + record['offset'] = context.currRecOffset; + callback(record, args); + //pz2 record + } else if ( recordNode = + data.getElementsByTagName("record")[0] ) { + // if stylesheet was fetched do not parse the response + if ( context.xslDoc ) { + record = new Array(); + record['xmlDoc'] = data; + record['xslDoc'] = context.xslDoc; + record['recid'] = + recordNode.getElementsByTagName("recid")[0] + .firstChild.nodeValue; + //parse record + } else { + record = Element_parseChildNodes(recordNode); + } + var activeClients = + Number( data.getElementsByTagName("activeclients")[0] + .childNodes[0].nodeValue ); + context.activeClients = activeClients; + context.recordCounter++; + var delay = context.recordTime + context.recordCounter * context.dumpFactor; + if ( activeClients > 0 ) + context.recordTimer = + setTimeout ( + function() { + context.record(id, offset, syntax, handler); + }, + delay + ); + callback(record, args); + } + else + context.throwError('Record failed. Malformed WS resonse.', + 115); + } + ); + }, + + termlist: function() + { + if( !this.searchStatusOK && this.useSessions ) + throw new Error( + 'Pz2.js: termlist command has to be preceded with a search command.' + ); + + // if called explicitly takes precedence + clearTimeout(this.termTimer); + + var context = this; + var request = new pzHttpRequest(this.pz2String, this.errorHandler); + request.safeGet( + { + "command": "termlist", + "session": this.sessionID, + "name": this.termKeys, + "windowid" : window.name, + "version" : this.version + + }, + function(data) { + if ( data.getElementsByTagName("termlist") ) { + var activeClients = + Number( data.getElementsByTagName("activeclients")[0] + .childNodes[0].nodeValue ); + context.activeClients = activeClients; + var termList = { "activeclients": activeClients }; + var termLists = data.getElementsByTagName("list"); + //for each termlist + for (i = 0; i < termLists.length; i++) { + var listName = termLists[i].getAttribute('name'); + termList[listName] = new Array(); + var terms = termLists[i].getElementsByTagName('term'); + //for each term in the list + for (j = 0; j < terms.length; j++) { + var term = { + "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' + }; + + // Only for xtargets: id, records, filtered + var termIdNode = + terms[j].getElementsByTagName("id"); + if(terms[j].getElementsByTagName("id").length) + term["id"] = + termIdNode[0].childNodes[0].nodeValue; + termList[listName][j] = term; + + var recordsNode = terms[j].getElementsByTagName("records"); + if (recordsNode && recordsNode.length) + term["records"] = recordsNode[0].childNodes[0].nodeValue; + + var filteredNode = terms[j].getElementsByTagName("filtered"); + if (filteredNode && filteredNode.length) + term["filtered"] = filteredNode[0].childNodes[0].nodeValue; + + } + } + + context.termCounter++; + var delay = context.termTime + + context.termCounter * context.dumpFactor; + if ( activeClients > 0 ) + context.termTimer = + setTimeout( + function () { + context.termlist(); + }, + delay + ); + + context.termlistCallback(termList); + } + else + context.throwError('Termlist failed. Malformed WS resonse.', + 116); + } + ); + + }, + bytarget: function() + { + if( !this.initStatusOK && this.useSessions ) + throw new Error( + 'Pz2.js: bytarget command has to be preceded with a search command.' + ); + + // no need to continue + if( !this.searchStatusOK ) + return; + + // if called explicitly takes precedence + clearTimeout(this.bytargetTimer); + + var context = this; + var request = new pzHttpRequest(this.pz2String, this.errorHandler); + request.safeGet( + { + "command": "bytarget", + "session": this.sessionID, + "block": 1, + "windowid" : window.name, + "version" : this.version + }, + function(data) { + if ( data.getElementsByTagName("status")[0] + .childNodes[0].nodeValue == "OK" ) { + var targetNodes = data.getElementsByTagName("target"); + var bytarget = new Array(); + for ( i = 0; i < targetNodes.length; i++) { + bytarget[i] = new Array(); + for( j = 0; j < targetNodes[i].childNodes.length; j++ ) { + if ( targetNodes[i].childNodes[j].nodeType + == Node.ELEMENT_NODE ) { + var nodeName = + targetNodes[i].childNodes[j].nodeName; + if (targetNodes[i].childNodes[j].firstChild != null) + { + var nodeText = targetNodes[i].childNodes[j] + .firstChild.nodeValue; + bytarget[i][nodeName] = nodeText; + } + else { + bytarget[i][nodeName] = ""; + } + + + } + } + if (bytarget[i]["state"]=="Client_Disconnected") { + bytarget[i]["hits"] = "Error"; + } else if (bytarget[i]["state"]=="Client_Error") { + bytarget[i]["hits"] = "Error"; + } else if (bytarget[i]["state"]=="Client_Working") { + bytarget[i]["hits"] = "..."; + } + if (bytarget[i].diagnostic == "1") { + bytarget[i].diagnostic = "Permanent system error"; + } else if (bytarget[i].diagnostic == "2") { + bytarget[i].diagnostic = "Temporary system error"; + } + var targetsSuggestions = targetNodes[i].getElementsByTagName("suggestions"); + if (targetsSuggestions != undefined && targetsSuggestions.length>0) { + var suggestions = targetsSuggestions[0]; + bytarget[i]["suggestions"] = Element_parseChildNodes(suggestions); + } + } + + context.bytargetCounter++; + var delay = context.bytargetTime + + context.bytargetCounter * context.dumpFactor; + if ( context.activeClients > 0 ) + context.bytargetTimer = + setTimeout( + function () { + context.bytarget(); + }, + delay + ); + + context.bytargetCallback(bytarget); + } + else + context.throwError('Bytarget failed. Malformed WS resonse.', + 117); + } + ); + }, + + // just for testing, probably shouldn't be here + showNext: function(page) + { + var step = page || 1; + this.show( ( step * this.currentNum ) + this.currentStart ); + }, + + showPrev: function(page) + { + if (this.currentStart == 0 ) + return false; + var step = page || 1; + var newStart = this.currentStart - (step * this.currentNum ); + this.show( newStart > 0 ? newStart : 0 ); + }, + + showPage: function(pageNum) + { + //var page = pageNum || 1; + this.show(pageNum * this.currentNum); + } +}; + +/* +******************************************************************************** +** AJAX HELPER CLASS *********************************************************** +******************************************************************************** +*/ +var pzHttpRequest = function ( url, errorHandler ) { + this.maxUrlLength = 2048; + this.request = null; + this.url = url; + this.errorHandler = errorHandler || null; + this.async = true; + this.requestHeaders = {}; + + 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 = +{ + safeGet: function ( params, callback ) + { + var encodedParams = this.encodeParams(params); + var url = this._urlAppendParams(encodedParams); + if (url.length >= this.maxUrlLength) { + this.requestHeaders["Content-Type"] + = "application/x-www-form-urlencoded"; + this._send( 'POST', this.url, encodedParams, callback ); + } else { + this._send( 'GET', url, '', callback ); + } + }, + + get: function ( params, callback ) + { + this._send( 'GET', this._urlAppendParams(this.encodeParams(params)), + '', callback ); + }, + + post: function ( params, data, callback ) + { + this._send( 'POST', this._urlAppendParams(this.encodeParams(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; + }, + + encodeParams: function (params) + { + var sep = ""; + var encoded = ""; + for (var key in params) { + if (params[key] != null) { + encoded += sep + key + '=' + encodeURIComponent(params[key]); + sep = '&'; + } + } + return encoded; + }, + + _send: function ( type, url, data, callback) + { + var context = this; + this.callback = callback; + this.async = true; + this.request.open( type, url, this.async ); + for (var key in this.requestHeaders) + this.request.setRequestHeader(key, this.requestHeaders[key]); + this.request.onreadystatechange = function () { + context._handleResponse(url); /// url used ONLY for error reporting + } + this.request.send(data); + }, + + _urlAppendParams: function (encodedParams) + { + if (encodedParams) + return this.url + "?" + encodedParams; + else + return this.url; + }, + + _handleResponse: function (savedUrlForErrorReporting) + { + if ( this.request.readyState == 4 ) { + // pick up appplication errors first + var errNode = null; + if (this.request.responseXML && + (errNode = this.request.responseXML.documentElement) + && errNode.nodeName == 'error') { + var errMsg = errNode.getAttribute("msg"); + var errCode = errNode.getAttribute("code"); + var errAddInfo = ''; + if (errNode.childNodes.length) + errAddInfo = ': ' + errNode.childNodes[0].nodeValue; + + 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.request.responseXML == null) { + if (this.request.responseText != null) { + //assume JSON + + var json = null; + var text = this.request.responseText; + if (typeof window.JSON == "undefined") + json = eval("(" + text + ")"); + else { + try { + json = JSON.parse(text); + } + catch (e) { + // Safari: eval will fail as well. Considering trying JSON2 (non-native implementation) instead + /* DEBUG only works in mk2-mobile + if (document.getElementById("log")) + document.getElementById("log").innerHTML = "" + e + " " + length + ": " + text; + */ + try { + json = eval("(" + text + ")"); + } + catch (e) { + /* DEBUG only works in mk2-mobile + if (document.getElementById("log")) + document.getElementById("log").innerHTML = "" + e + " " + length + ": " + text; + */ + } + } + } + this.callback(json, "json"); + } else { + var err = new Error("XML response is empty but no error " + + "for " + savedUrlForErrorReporting); + err.code = -1; + 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("HTTP response not OK: " + + this.request.status + " - " + + this.request.statusText ); + err.code = '00' + this.request.status; + if (this.errorHandler) { + this.errorHandler(err); + } + else { + throw err; + } + } + } + } +}; + +/* +******************************************************************************** +** XML HELPER FUNCTIONS ******************************************************** +******************************************************************************** +*/ + +// 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; +} + +DOMDoc.transformToDoc = function (xmlDoc, xslDoc) +{ + if ( window.XSLTProcessor ) { + var proc = new XSLTProcessor(); + proc.importStylesheet( xslDoc ); + return proc.transformToDocument(xmlDoc); + } else if ( window.ActiveXObject ) { + return document.parseXmlFromString(xmlDoc.transformNode(xslDoc)); + } else { + alert( 'Unable to perform XSLT transformation in this browser' ); + } +} + +// 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 (typeof DOM_Element.text != 'undefined') { + return DOM_Element.text; + } else { + throw new Error("Cannot get text content of the node, no such method."); + } +} + +Element_parseChildNodes = function (node) +{ + var parsed = {}; + var hasChildElems = false; + var textContent = ''; + + if (node.hasChildNodes()) { + var children = node.childNodes; + for (var i = 0; i < children.length; i++) { + var child = children[i]; + switch (child.nodeType) { + case Node.ELEMENT_NODE: + hasChildElems = true; + var nodeName = child.nodeName; + if (!(nodeName in parsed)) + parsed[nodeName] = []; + parsed[nodeName].push(Element_parseChildNodes(child)); + break; + case Node.TEXT_NODE: + textContent += child.nodeValue; + break; + case Node.CDATA_SECTION_NODE: + textContent += child.nodeValue; + break; + } + } + } + + var attrs = node.attributes; + for (var i = 0; i < attrs.length; i++) { + hasChildElems = true; + var attrName = '@' + attrs[i].nodeName; + var attrValue = attrs[i].nodeValue; + parsed[attrName] = attrValue; + } + + // if no nested elements/attrs set value to text + if (hasChildElems) + parsed['#text'] = textContent; + else + parsed = textContent; + + return parsed; +} + +/* do not remove trailing bracket */ +}