1 // ////////////////////////////////////////////////////////////////////////////

     2 // Symbian Foundation Example Code

     3 //

     4 // This software is in the public domain. No copyright is claimed, and you 

     5 // may use it for any purpose without license from the Symbian Foundation.

     6 // No warranty for any purpose is expressed or implied by the authors or

     7 // the Symbian Foundation. 

     8 // ////////////////////////////////////////////////////////////////////////////

     9 

    10 var resultsPerPage = 30;

    11 

    12 var wikiSearchBaseUrl = symbianOrgBaseUrl + "/wiki/api.php?format=xml&action=query&list=search&srsearch=";

    13 var wikiSearchOffsetQueryPart = "&sroffset=";

    14 var wikiSearchLimitQueryPart = "&srlimit=";

    15 var wikiSearchWhatQueryPart = "&srwhat=";

    16 

    17 var wikiViewPageUrlBase = symbianOrgBaseUrl + "/wiki/index.php?title=";

    18 var wikiPrintableParam = "&printable=yes";

    19 

    20 

    21 //var wikiListCategoriesUrl = symbianOrgBaseUrl + "/wiki/api.php?format=xml&action=query&list=allcategories&aclimit=500&acprop=size";

    22 //var wikiWatchListUrl = "http://en.wikipedia.org/w/api.php?action=query&list=watchlist&wlallrev&wlprop=ids|title|timestamp|user|comment";

    23 //var wikiWatchListFeed = "/wiki/api.php?action=feedwatchlist&feedformat=rss";

    24 

    25 var wikiSearchOptions = [

    26     { value: "title", text: "Search in title only" },

    27     { value: "text", text: "Full text search" },

    28 ];

    29 

    30 function WikiHome (parent) {

    31 	ListView.prototype.init.call(this, null, createCaption("Symbian Wiki"));	

    32 	this.previousView = parent;

    33 

    34 	this.wikiMainPageButton = new NavigationButton(1, "right.gif", "Browse: Main page");

    35 	this.wikiSearchButton = new FormButton(null, "Search");

    36 	this.wikiSearchSelection = new SelectionList(null, null, wikiSearchOptions, false, wikiSearchOptions[0]);

    37 	this.wikiSearchString = new TextField('wikiSearchString', null, "");

    38 	

    39 	var self = this;

    40 	

    41 	this.wikiMainPageButton.addEventListener("ActionPerformed", function(){wikiBrowse("Main Page");});

    42 	this.wikiSearchButton.addEventListener("ActionPerformed", function(){self.search(0);});

    43 

    44 	this.addControl(this.wikiMainPageButton);

    45 	this.addControl(new Label(null, "Search Wiki", null));

    46 	this.addControl(this.wikiSearchString);

    47 	this.addControl(this.wikiSearchSelection);

    48 	this.addControl(this.wikiSearchButton);

    49 

    50 

    51 //	wikiBrowseButton = new NavigationButton(1, "right.gif", "Browse categories");

    52 //	wikiBrowseButton.addEventListener("ActionPerformed", function(){browseWikiCategories.show();});

    53 //	this.addControl(wikiBrowseButton);

    54 

    55 }

    56 

    57 WikiHome.prototype = new ListView(null, null);

    58 WikiHome.prototype.wikiMainPageButton = null;

    59 WikiHome.prototype.wikiSearchButton = null;

    60 WikiHome.prototype.wikiSearchString = null;

    61 WikiHome.prototype.wikiSearchSelection = null;

    62 

    63 var lastWikiSearchWasFrom = 0;

    64 var lastWikiSearchResultCountWas = 0;

    65 

    66 WikiHome.prototype.search = function(from) {

    67 	lastWikiSearchWasFrom = from;

    68 	var srstring = this.wikiSearchString.getText();

    69     var selectedTitleOrText = this.wikiSearchSelection.getSelected();

    70     var titleOrText = (selectedTitleOrText != null) ? selectedTitleOrText.value : "title";

    71 	var url = this.formSearchUrl( srstring , from, resultsPerPage, titleOrText );

    72 	var reader = new RssReader("Wiki: " + srstring, url, new WikiFeedPresenter(null), this, wikiResponseParser);

    73 	reader.show();

    74 }

    75 

    76 WikiHome.prototype.formSearchUrl = function(query, offset, limit, what) {

    77 	var buf = wikiSearchBaseUrl + query

    78 	if (offset > 0) {

    79 		buf += wikiSearchOffsetQueryPart + offset;

    80 	}

    81 	buf += wikiSearchLimitQueryPart + limit

    82 	buf += wikiSearchWhatQueryPart + what;

    83 	return buf;

    84 }

    85 

    86 

    87 // /////////////////////////////////////////////////////////////////////////////

    88 // RssReader customisations

    89 

    90 // response parser for forum groups

    91 function wikiResponseParser(broker, responseStatus, xmlDoc) {

    92     if (responseStatus == 200 && xmlDoc != null) {

    93 		// for compatibility with rss

    94 		var lastModified = new Date();

    95 		

    96         // init result items array

    97         var items = [];

    98 

    99 		var elements = xmlDoc.getElementsByTagName("p");

   100 

   101 		for (var i = 0; i < elements.length; i++) {

   102 			var pagetitle = elements[i].getAttribute("title");

   103             items.push({ id: ""+i, title: pagetitle});

   104 		}

   105 

   106 		lastWikiSearchResultCountWas = elements.length;

   107         // update was completed successfully

   108         return { status: "ok", lastModified: lastModified, items: items };

   109     } else {

   110         // update failed

   111         return { status: "error" };

   112     }

   113 }

   114 

   115 // FeedPresenter implementation for wiki

   116 function WikiFeedPresenter(rssreader){

   117 	if (rssreader) {

   118 		this.init(rssreader);

   119 	}

   120 }

   121 

   122 // WikiFeedPresenter is a subclass of ButtonFeedPresenter

   123 WikiFeedPresenter.prototype = new ButtonFeedPresenter(null);

   124 

   125 // WikiFeedPresenter "Constructor"

   126 WikiFeedPresenter.prototype.init = function(rssreader) {

   127 	ButtonFeedPresenter.prototype.init.call(this, rssreader);

   128 }

   129 

   130 // Handle the click on a specific item

   131 WikiFeedPresenter.prototype.feedClicked = function(event){

   132 	var buttonid = event.source.id;

   133 	

   134 	if (buttonid == "Next page") {

   135 		wiki.search(lastWikiSearchWasFrom + resultsPerPage);

   136 	}

   137 	else if (buttonid == "Previous page") {

   138 		var from = lastWikiSearchWasFrom - resultsPerPage; 

   139 		if ( from < 0 ) from = 0;

   140 		wiki.search(from);

   141 	}

   142 	else {

   143 		// show article

   144 		var title = this.items[buttonid].title;

   145 		wikiBrowse(title);

   146 	}

   147 }

   148 

   149 // Create and add controls to be shown before items list.

   150 WikiFeedPresenter.prototype.addFooterItems = function(){

   151     var self = this;

   152 	if (lastWikiSearchResultCountWas == resultsPerPage) {

   153 		var nextPageButton = new NavigationButton("Next page", "blueright.gif", "Next page");

   154 		nextPageButton.addEventListener("ActionPerformed", function(event){ self.feedClicked(event); });

   155 		this.rssreader.addControl(nextPageButton);

   156 	}

   157 	if (lastWikiSearchWasFrom > 0) {

   158 		var prevPageButton = new NavigationButton("Previous page", "blueright.gif", "Previous page");

   159 		prevPageButton.addEventListener("ActionPerformed", function(event) { self.feedClicked(event); });

   160 		this.rssreader.addControl(prevPageButton);

   161 	}

   162 }

   163 

   164 

   165 // /////////////////////////////////////////////////////////////////////////////////

   166 // Browse / view wiki pages in 'printable format'

   167 var wikiAjax;

   168 var pageBeingShown;

   169 function wikiBrowse(page) {

   170 	pageBeingShown = page;

   171 	uiManager.showNotification(-1, "wait", "Loading page...", -1);

   172 	if ( page ) {

   173 		wikiAjax = new Ajax();

   174 	    

   175 		wikiAjax.onreadystatechange = function() { wikiPageDownloadStateChanged(); };

   176 		

   177 		var url = wikiViewPageUrlBase  + encodeURIComponent(page) + wikiPrintableParam; 

   178 	    // initiate the request

   179 	    wikiAjax.open("GET", url, true);

   180 	    wikiAjax.send(null);

   181 	}

   182 }

   183 

   184 function wikiPageDownloadStateChanged() {

   185     if (wikiAjax.readyState == 4) {

   186 		uiManager.hideNotification();

   187 		var html = wikiAjax.responseText;

   188 		var start = html.indexOf('<div id="bodyContent">');

   189 		var end = findDivEnd(html, start);

   190 		var pageView = new ListView(null, createCaption(pageBeingShown));

   191 		var container = new TextPane(null, null, modWikiLinks(html.substring(start, end)));

   192 		pageView.addControl(container);

   193 		pageView.previousView = uiManager.currentView;

   194 		pageView.show();

   195 		if (window.widget) {

   196 			widget.setNavigationEnabled(true);

   197 		}

   198 	}

   199 }

   200 

   201 function modWikiLinks(text) {

   202 	var tmp = text.replace(/ src="/g, ' src="http://developer.symbian.org');

   203 	// images sorted. now links

   204 	var strToLookFor = ' href="/wiki/index.php/';

   205 	var from = 0;

   206 	var ind = tmp.indexOf(strToLookFor);

   207 	var buf ="";

   208 	while ( ind > 0 ) {

   209 		buf = buf + tmp.substring(from, ind);

   210 		// extract page name

   211 		var ind2 = tmp.indexOf('"', ind + strToLookFor.length);

   212 		var pageName = tmp.substring(ind + strToLookFor.length, ind2);

   213 		buf += " style=\"text-decoration: underline;\" href=\"JavaScript:void(0)\" onclick=\"wikiBrowse('" + pageName + "'); return false;\"";

   214 		from = ind2;

   215 		ind = tmp.indexOf(strToLookFor, from);

   216 	}

   217 	buf = buf + tmp.substring(from);

   218 	return buf; 

   219 }

   220 

   221 function findDivEnd(text, from) {

   222 	var openDivCount = 1;

   223 	var divind = text.indexOf("<div", from+1);

   224 	var cdivind = text.indexOf("</div", from+1);

   225 	var pos = from;

   226 	while ( openDivCount > 0 && divind > 0 && cdivind > 0 ) {

   227 		pos = Math.min(divind, cdivind);

   228 		if ( pos == divind ) {

   229 			openDivCount ++;

   230 		}

   231 		if ( pos == cdivind ) {

   232 			openDivCount --;

   233 		}

   234 		divind = text.indexOf("<div", pos+1);

   235 		cdivind = text.indexOf("</div", pos+1);

   236 	}

   237 	return pos;

   238 }