mirror of
https://github.com/Alfresco/alfresco-community-repo.git
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a4aa830af2
. NodeInfo panel and Ajax client library - Rewrite of Node Info panel - Alfresco common DOM methods refactored into namespaced object (YUI/Dojo style) Alfresco.Dom - Addition of useful DOM and 'smart' alignment method to common.js - OpenSearch now uses additional namespace for it's global method handlers: Alfresco.OpenSearchEngine - Temporary icons added for pop-up node info panel . Additional FreeMarker model API method "cropContent(contentprop, length)" to return the first N bytes of a content stream - auto converted to plain/text from all supported transformation mimetypes . DownloadContentServlet now handles ContentIOException more gracefully . AbstractContentReader fixed to handle empty file data when requesting N characters from a content stream . Yahoo scripts move to PageTag rendering as appropriate . Refactoring of existing ajax components that output Yahoo scripts git-svn-id: https://svn.alfresco.com/repos/alfresco-enterprise/alfresco/HEAD/root@5253 c4b6b30b-aa2e-2d43-bbcb-ca4b014f7261
680 lines
20 KiB
JavaScript
680 lines
20 KiB
JavaScript
//
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// Alfresco OpenSearch client library
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// Gavin Cornwell 09-01-2007
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//
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// NOTE: This script relies on common.js so therefore needs to be loaded
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// prior to this one on the containing HTML page.
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var _OS_NS_PREFIX = "opensearch";
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var _OS_NS_URI = "http://a9.com/-/spec/opensearch/1.1/";
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var _RESULTS_DIV_ID_SUFFIX = "-os-results";
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var _OPTIONS_DIV_ID_SUFFIX = "-os-options";
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var _RESULTSET_PANEL_DIV_ID_SUFFIX = "-osresults-panel";
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var _RESULTSET_LIST_DIV_ID_SUFFIX = "-osresults-list";
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var _RESULTSET_PAGING_DIV_ID_SUFFIX = "-osresults-paging";
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var _ENGINE_ENABLED_FIELD_ID = "-engine-enabled";
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var _SEARCH_TERM_FIELD_ID = "-search-term";
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var _PAGE_SIZE_FIELD_ID = "-page-size";
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/**
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* Constructor for an object to hold the definition of an OpenSearch engine
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*/
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Alfresco.OpenSearchEngine = function(id, label, url)
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{
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this.id = id;
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this.label = label;
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this.url = url;
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}
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/**
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* Constructor for an OpenSearchClient object
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*/
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Alfresco.OpenSearchClient = function(id)
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{
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this.id = id;
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this.engines = [];
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this.enginesById = [];
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}
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Alfresco.OpenSearchClient.prototype =
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{
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id: null,
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engines: null,
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enginesById: null,
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/**
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* Registers an OpenSearch engine to be called when performing queries
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*/
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registerOpenSearchEngine: function(id, label, url)
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{
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var se = new Alfresco.OpenSearchEngine(id, label, url);
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this.engines[this.engines.length] = se;
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this.enginesById[id] = se;
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},
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/**
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* Handles the key press event, if ENTER is pressed execute the query
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*/
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handleKeyPress: function(e)
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{
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var keycode;
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// get the keycode
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if (window.event)
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{
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keycode = window.event.keyCode;
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}
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else if (e)
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{
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keycode = e.which;
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}
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// if ENTER was pressed execute the query
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if (keycode == 13)
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{
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this.executeQuery();
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return false;
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}
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return true;
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},
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/**
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* Toggles the visibility of the options panel
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*/
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toggleOptions: function(icon)
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{
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var currentState = icon.className;
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var optionsDiv = document.getElementById(this.id + _OPTIONS_DIV_ID_SUFFIX);
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if (currentState == "collapsed")
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{
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icon.src = getContextPath() + "/images/icons/expanded.gif";
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icon.className = "expanded";
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// show the div holding the options
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if (optionsDiv != null)
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{
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optionsDiv.style.display = "block";
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}
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}
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else
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{
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icon.src = getContextPath() + "/images/icons/collapsed.gif";
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icon.className = "collapsed";
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// hide the div holding the options
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if (optionsDiv != null)
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{
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optionsDiv.style.display = "none";
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}
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}
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},
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/**
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* Executes the query against all the registered and selected opensearch engines
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*/
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executeQuery: function()
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{
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// gather the required parameters
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var term = document.getElementById(this.id + _SEARCH_TERM_FIELD_ID).value;
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var count = document.getElementById(this.id + _PAGE_SIZE_FIELD_ID).value;
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// default the count if its invalid
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if (count.length == 0 || isNaN(count))
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{
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count = 5;
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}
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// issue the queries if there is enough search criteria
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if (term != null && term.length > 1)
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{
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// remove previous results (if necessary)
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var resultsPanel = document.getElementById(this.id + _RESULTS_DIV_ID_SUFFIX);
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if (resultsPanel != null)
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{
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while (resultsPanel.firstChild)
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{
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resultsPanel.removeChild(resultsPanel.firstChild);
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};
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}
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// issue the search request for each enabled engine
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for (var e = 0; e < this.engines.length; e++)
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{
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// get the checkbox for the current engine
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var ose = this.engines[e];
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var engCheckbox = document.getElementById(this.id + "-" + ose.id + _ENGINE_ENABLED_FIELD_ID);
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if (engCheckbox != null && engCheckbox.checked)
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{
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this.issueSearchRequest(ose, term, count);
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}
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}
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}
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},
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/**
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* Issues an Ajax request for the given OpenSearchEngine
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* using the given search term and page size.
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*/
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issueSearchRequest: function(ose, term, pageSize)
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{
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// generate the search url
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var searchUrl = this.calculateSearchUrl(ose.url, term, pageSize);
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// issue the request
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if (searchUrl != null)
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{
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YAHOO.util.Connect.asyncRequest("GET", searchUrl,
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{
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success: Alfresco.OpenSearchEngine.processSearchResults,
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failure: Alfresco.OpenSearchEngine.handleSearchError,
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argument: [ose.id, this]
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},
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null);
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}
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else
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{
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handleErrorYahoo("Failed to generate url for search engine '" + ose.label +
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"'.\n\nThis is probably caused by missing required parameters, check the template url for the search engine.");
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}
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},
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/**
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* Shows another page of the current search results for the
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* given engineId
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*/
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showPage: function(engineId, url)
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{
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// execute the query and process the results
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YAHOO.util.Connect.asyncRequest("GET", url,
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{
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success: Alfresco.OpenSearchEngine.processShowPageResults,
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failure: Alfresco.OpenSearchEngine.handleSearchError,
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argument: [engineId, this]
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},
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null);
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},
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/**
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* Generates a concrete url for the given template url and parameters.
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*
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* All parameters (inside { and }) have to be replaced. We only need to populate
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* the 'searchTerms' and 'count' parameters, all optional ones will use the
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* empty string. If there is a mandatory parameter present (other than searchTerms
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* and count) null will be returned.
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*/
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calculateSearchUrl: function(templateUrl, term, count)
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{
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var searchUrl = null;
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// define regex pattern to look for params
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var pattern = /\{+\w*\}+|\{+\w*\?\}+|\{+\w*:\w*\}+|\{+\w*:\w*\?\}+/g;
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var params = templateUrl.match(pattern);
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if (params != null && params.length > 0)
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{
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searchUrl = templateUrl;
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// go through the parameters and replace the searchTerms and count
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// parameters with the given values and then replace all optional
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// parameters with an empty string.
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for (var p = 0; p < params.length; p++)
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{
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var param = params[p];
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if (param == "{searchTerms}")
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{
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searchUrl = searchUrl.replace(param, term);
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}
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else if (param == "{count}" || param == "{count?}")
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{
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searchUrl = searchUrl.replace(param, count);
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}
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else if (param.indexOf("?") != -1)
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{
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// replace the optional parameter with ""
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searchUrl = searchUrl.replace(param, "");
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}
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else
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{
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// an unknown manadatory parameter return
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searchUrl = null;
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break;
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}
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}
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}
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return searchUrl;
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},
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/**
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* Renders the results for the given feed element.
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*/
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renderSearchResults: function(engineId, feed)
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{
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// look up the label from the osengine registry
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var engineLabel = this.enginesById[engineId].label;
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// create the div to hold the results and the header bar
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var sb = [];
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sb[sb.length] = "<div id='";
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sb[sb.length] = this.id;
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sb[sb.length] = "-";
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sb[sb.length] = engineId;
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sb[sb.length] = _RESULTSET_PANEL_DIV_ID_SUFFIX;
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sb[sb.length] = "' class='osResults'>";
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sb[sb.length] = "<div class='osEngineTitle'>";
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sb[sb.length] = engineLabel;
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sb[sb.length] = "</div>";
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// create the actual results to display, start with the containing div
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sb[sb.length] = "<div id='";
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sb[sb.length] = this.id;
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sb[sb.length] = "-";
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sb[sb.length] = engineId;
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sb[sb.length] = _RESULTSET_LIST_DIV_ID_SUFFIX;
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sb[sb.length] = "'>";
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sb[sb.length] = this.generateResultsListHTML(feed);
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sb[sb.length] = "</div>";
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// create the paging controls
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sb[sb.length] = "<div id='";
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sb[sb.length] = this.id;
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sb[sb.length] = "-";
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sb[sb.length] = engineId;
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sb[sb.length] = _RESULTSET_PAGING_DIV_ID_SUFFIX;
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sb[sb.length] = "' class='osResultsPaging'>";
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sb[sb.length] = this.generatePagingHTML(engineId, feed);
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sb[sb.length] = "</div>";
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// close the containing div
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sb[sb.length] = "</div>";
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// create a div element to hold the results
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var d = document.createElement("div");
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d.innerHTML = sb.join("");
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// return the div
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return d;
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},
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/**
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* Generates the HTML to display the search results from the
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* given feed.
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*/
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generateResultsListHTML: function(feed)
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{
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var isAtom = true;
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// if the name of the feed element is "channel" this is an RSS feed
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if (feed.tagName == "channel")
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{
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isAtom = false;
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}
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var results = null;
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if (isAtom)
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{
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results = feed.getElementsByTagName("entry");
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}
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else
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{
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results = feed.getElementsByTagName("item");
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}
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if (results == null || results.length == 0)
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{
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return "<div class='osResultNoMatch'>No results</div>";
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}
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else
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{
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var sb = [];
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sb[sb.length] = "<table cellpadding='0' cellspacing='0'>";
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for (var x = 0; x < results.length; x++)
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{
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// get the current entry
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var elResult = results[x];
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// get the title, icon and summary
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var title = Alfresco.Dom.getElementTextByTagName(elResult, "title");
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var icon = Alfresco.Dom.getElementTextByTagName(elResult, "icon");
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var summary = null;
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if (isAtom)
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{
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summary = Alfresco.Dom.getElementTextByTagName(elResult, "summary");
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}
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else
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{
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summary = Alfresco.Dom.getElementTextByTagName(elResult, "description");
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}
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// get the link href
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var link = null;
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var elLink = Alfresco.Dom.getElementByTagName(elResult, "link");
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if (elLink != null)
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{
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if (isAtom)
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{
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link = elLink.getAttribute("href");
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}
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else
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{
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link = Alfresco.Dom.getElementText(elLink);
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}
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}
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// generate the row to represent the result
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sb[sb.length] = "<tr><td valign='top'><div class='osResultIcon'>";
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if (icon != null)
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{
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sb[sb.length] = "<img src='";
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sb[sb.length] = icon;
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sb[sb.length] = "' />";
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}
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sb[sb.length] = "</div></td><td><div class='osResultTitle'>";
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if (title != null)
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{
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if (link != null)
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{
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sb[sb.length] = "<a target='_new' href='";
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sb[sb.length] = link;
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sb[sb.length] = "'>";
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}
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sb[sb.length] = title;
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if (link != null)
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{
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sb[sb.length] = "</a>";
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}
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}
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sb[sb.length] = "</div><div class='osResultSummary'>";
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if (summary != null)
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{
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sb[sb.length] = summary;
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}
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sb[sb.length] = "</div></td></tr>";
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}
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// close the table
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sb[sb.length] = "</table>";
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return sb.join("");
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}
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},
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/**
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* Generates the HTML to display the paging information i.e. the first, next, previous
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* and last buttons and the position info i.e. "x - y of z".
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*/
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generatePagingHTML: function(engineId, feed)
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{
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var totalResults = 0;
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var pageSize = 5;
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var startIndex = 0;
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// check there are results
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var elTotalResults = Alfresco.Dom.getElementByTagNameNS(feed, _OS_NS_URI, _OS_NS_PREFIX, "totalResults");
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if (elTotalResults != null)
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{
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totalResults = Alfresco.Dom.getElementText(elTotalResults);
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}
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// if there are no results return an empty string
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if (totalResults == 0)
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{
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return "";
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}
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var elStartIndex = Alfresco.Dom.getElementByTagNameNS(feed, _OS_NS_URI, _OS_NS_PREFIX, "startIndex");
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if (elStartIndex != null)
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{
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startIndex = Alfresco.Dom.getElementText(elStartIndex);
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}
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var elItemsPerPage = Alfresco.Dom.getElementByTagNameNS(feed, _OS_NS_URI, _OS_NS_PREFIX, "itemsPerPage");
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if (elItemsPerPage != null)
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{
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pageSize = Alfresco.Dom.getElementText(elItemsPerPage);
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}
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// calculate the number of pages the results span
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/*var noPages = Math.floor(totalResults / pageSize);
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var remainder = totalResults % pageSize;
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if (remainder != 0)
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{
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noPages++;
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}*/
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var endIndex = (Number(startIndex) + Number(pageSize)) - 1;
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if (endIndex > totalResults)
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{
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endIndex = totalResults;
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}
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// extract the navigation urls
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var firstUrl = null;
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var nextUrl = null;
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var previousUrl = null;
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var lastUrl = null;
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var links = feed.getElementsByTagName("link");
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if (links != null && links.length > 0)
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{
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for (var x = 0; x < links.length; x++)
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{
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var elNavLink = links[x];
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var linkType = elNavLink.getAttribute("rel");
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if (linkType == "first")
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{
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firstUrl = elNavLink.getAttribute("href");
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}
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else if (linkType == "next")
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{
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nextUrl = elNavLink.getAttribute("href");
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}
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else if (linkType == "previous")
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{
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previousUrl = elNavLink.getAttribute("href");
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}
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else if (linkType == "last")
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{
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lastUrl = elNavLink.getAttribute("href");
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}
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}
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}
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var sb = [];
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if (firstUrl != null)
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{
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sb[sb.length] = "<a href='#' onclick='";
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sb[sb.length] = this.id;
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sb[sb.length] = ".showPage("";
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sb[sb.length] = engineId;
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sb[sb.length] = "", "";
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sb[sb.length] = firstUrl;
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sb[sb.length] = "");'><img src='";
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sb[sb.length] = getContextPath();
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sb[sb.length] = "/images/icons/FirstPage.gif' title='First Page' border='0' /></a>";
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}
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else
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{
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sb[sb.length] = "<img src='";
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sb[sb.length] = getContextPath();
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sb[sb.length] = "/images/icons/FirstPage_unavailable.gif' />";
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}
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sb[sb.length] = " ";
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if (previousUrl != null)
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{
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sb[sb.length] = "<a href='#' onclick='";
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sb[sb.length] = this.id;
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sb[sb.length] = ".showPage("";
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sb[sb.length] = engineId;
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sb[sb.length] = "", "";
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sb[sb.length] = previousUrl;
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sb[sb.length] = "");'><img src='";
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sb[sb.length] = getContextPath();
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sb[sb.length] = "/images/icons/PreviousPage.gif' title='Previous Page' border='0' /></a>";
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}
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else
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{
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sb[sb.length] = "<img src='";
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sb[sb.length] = getContextPath();
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sb[sb.length] = "/images/icons/PreviousPage_unavailable.gif' />";
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}
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sb[sb.length] = " ";
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sb[sb.length] = startIndex;
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sb[sb.length] = " - ";
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sb[sb.length] = endIndex;
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sb[sb.length] = " of ";
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sb[sb.length] = totalResults;
|
|
sb[sb.length] = " ";
|
|
|
|
if (nextUrl != null)
|
|
{
|
|
sb[sb.length] = "<a href='#' onclick='";
|
|
sb[sb.length] = this.id;
|
|
sb[sb.length] = ".showPage("";
|
|
sb[sb.length] = engineId;
|
|
sb[sb.length] = "", "";
|
|
sb[sb.length] = nextUrl;
|
|
sb[sb.length] = "");'><img src='";
|
|
sb[sb.length] = getContextPath();
|
|
sb[sb.length] = "/images/icons/NextPage.gif' title='Next Page' border='0' /></a>";
|
|
}
|
|
else
|
|
{
|
|
sb[sb.length] = "<img src='";
|
|
sb[sb.length] = getContextPath();
|
|
sb[sb.length] = "/images/icons/NextPage_unavailable.gif' />";
|
|
}
|
|
|
|
sb[sb.length] = " ";
|
|
|
|
if (lastUrl != null)
|
|
{
|
|
sb[sb.length] = "<a href='#' onclick='";
|
|
sb[sb.length] = this.id;
|
|
sb[sb.length] = ".showPage("";
|
|
sb[sb.length] = engineId;
|
|
sb[sb.length] = "", "";
|
|
sb[sb.length] = lastUrl;
|
|
sb[sb.length] = "");'><img src='";
|
|
sb[sb.length] = getContextPath();
|
|
sb[sb.length] = "/images/icons/LastPage.gif' title='Last Page' border='0' /></a>";
|
|
}
|
|
else
|
|
{
|
|
sb[sb.length] = "<img src='";
|
|
sb[sb.length] = getContextPath();
|
|
sb[sb.length] = "/images/icons/LastPage_unavailable.gif' />";
|
|
}
|
|
|
|
return sb.join("");
|
|
}
|
|
}
|
|
|
|
/*********************************/
|
|
/** Handlers for AJAX callbacks **/
|
|
/*********************************/
|
|
|
|
/**
|
|
* Processes the XML search results
|
|
*/
|
|
Alfresco.OpenSearchEngine.processSearchResults = function(ajaxResponse)
|
|
{
|
|
try
|
|
{
|
|
// render the results from the Ajax response
|
|
var engineId = ajaxResponse.argument[0];
|
|
var clientInstance = ajaxResponse.argument[1];
|
|
var feed = ajaxResponse.responseXML.documentElement;
|
|
|
|
// if the name of the feed element is "rss", get the channel child element
|
|
if (feed.tagName == "rss")
|
|
{
|
|
feed = Alfresco.Dom.getElementByTagName(feed, "channel");
|
|
}
|
|
|
|
var resultsDiv = clientInstance.renderSearchResults(engineId, feed);
|
|
|
|
// create the div to hold the results and add the results
|
|
var resultsPanel = document.getElementById(clientInstance.id + _RESULTS_DIV_ID_SUFFIX);
|
|
if (resultsPanel != null)
|
|
{
|
|
// add the new results
|
|
resultsPanel.appendChild(resultsDiv);
|
|
}
|
|
else
|
|
{
|
|
alert("Failed to final results panel, unable to render search results!");
|
|
return;
|
|
}
|
|
}
|
|
catch (e)
|
|
{
|
|
handleCaughtError(e);
|
|
}
|
|
}
|
|
|
|
|
|
/**
|
|
* Processes the search results and updates the postion, result list
|
|
* and paging controls.
|
|
*/
|
|
Alfresco.OpenSearchEngine.processShowPageResults = function(ajaxResponse)
|
|
{
|
|
try
|
|
{
|
|
// render the results from the Ajax response
|
|
var engineId = ajaxResponse.argument[0];
|
|
var clientInstance = ajaxResponse.argument[1];
|
|
var feed = ajaxResponse.responseXML.documentElement;
|
|
|
|
// if the name of the feed element is "rss", get the channel child element
|
|
if (feed.tagName == "rss")
|
|
{
|
|
feed = Alfresco.Dom.getElementByTagName(feed, "channel");
|
|
}
|
|
|
|
// append the results list to the results list div
|
|
var resultsListDiv = document.getElementById(clientInstance.id + "-" +
|
|
engineId + _RESULTSET_LIST_DIV_ID_SUFFIX);
|
|
if (resultsListDiv != null)
|
|
{
|
|
resultsListDiv.innerHTML = clientInstance.generateResultsListHTML(feed);
|
|
}
|
|
|
|
// update the paging div with new urls and position info
|
|
var pagingDiv = document.getElementById(clientInstance.id + "-" +
|
|
engineId + _RESULTSET_PAGING_DIV_ID_SUFFIX);
|
|
if (pagingDiv != null)
|
|
{
|
|
pagingDiv.innerHTML = clientInstance.generatePagingHTML(engineId, feed);
|
|
}
|
|
}
|
|
catch (e)
|
|
{
|
|
handleCaughtError(e);
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Error handler for Ajax call to search engine
|
|
*/
|
|
Alfresco.OpenSearchEngine.handleSearchError = function(ajaxResponse)
|
|
{
|
|
var engineId = ajaxResponse.argument[0];
|
|
var clientInstance = ajaxResponse.argument[1];
|
|
var engineLabel = clientInstance.enginesById[engineId].label;
|
|
|
|
handleErrorYahoo("Failed to retrieve search results for '" + engineLabel +
|
|
"': " + ajaxResponse.status + " " + ajaxResponse.statusText);
|
|
}
|