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// ////////////////////////////////////////////////////////////////////////////
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// Symbian Foundation Example Code
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//
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// This software is in the public domain. No copyright is claimed, and you
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// may use it for any purpose without license from the Symbian Foundation.
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// No warranty for any purpose is expressed or implied by the authors or
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// the Symbian Foundation.
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// ////////////////////////////////////////////////////////////////////////////
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// Forums
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// Forums have the following structure:
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//
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// Forum group list
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// Forum list
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// Thread list
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// Message list
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// All four views are based on customised RssReader. We customise two aspects:
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// - Parsing XML - data is not RSS
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// - Handling item selection (e.g. creating a new view for a newly selected forum)
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// /////////////////////////////////////////////////////////////////////////////
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// Forum groups
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// response parser for forum groups
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function forumGroupsResponseParser(broker, responseStatus, xmlDoc) {
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if (responseStatus == 200 && xmlDoc != null) {
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// node ref for iterating
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var node;
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// for compatibility with rss
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var lastModified = new Date();
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// init result items array
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var items = [];
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var elements = xmlDoc.getElementsByTagName("group");
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for (var i = 0; i < elements.length; i++) {
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var groupid = elements[i].getAttribute("id");
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var grouptitle = elements[i].getAttribute("title");
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items.push({ id: groupid, title: grouptitle});
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}
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// update was completed successfully
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return { status: "ok", lastModified: lastModified, items: items };
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} else {
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// update failed
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return { status: "error" };
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}
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}
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// FeedPresenter implementation for forum groups
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function ForumGroupsFeedPresenter(rssreader){
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if (rssreader) {
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this.init(rssreader);
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}
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}
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// ForumGroupsFeedPresenter is a subclass of ButtonFeedPresenter
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ForumGroupsFeedPresenter.prototype = new ButtonFeedPresenter(null);
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// ForumGroupsFeedPresenter "Constructor"
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ForumGroupsFeedPresenter.prototype.init = function(rssreader) {
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ButtonFeedPresenter.prototype.init.call(this, rssreader);
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}
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// Handle the click on a specific item
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ForumGroupsFeedPresenter.prototype.feedClicked = function(event){
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var buttonid = event.source.id;
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if (buttonid == "latestPosts") {
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// show latest posts
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var url = forumFeedURL;
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var latestPostsView = new RssReader("Latest posts", url, new LatestPostsFeedPresenter(null), this.rssreader, null);
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latestPostsView.show();
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}
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else {
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// show forum group
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var groupid = this.items[buttonid].id;
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var grouptitle = this.items[buttonid].title;
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var url = forumsListUrl + groupid;
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var forumListView = new RssReader(grouptitle, url, new ForumsListFeedPresenter(null), this.rssreader, forumListResponseParser);
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forumListView.show();
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}
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}
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// Create and add controls to be shown before items list.
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ForumGroupsFeedPresenter.prototype.addPreambleItems = function(){
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var feedItemControl = new NavigationButton("latestPosts", "blueright.gif", "Latest posts");
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var self = this;
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feedItemControl.addEventListener("ActionPerformed", function(event) { self.feedClicked(event); });
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this.rssreader.addControl(feedItemControl);
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}
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// ///////////////////////////////////////////////////////////////////////////
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// List of forums in a group
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// response parser for forum list - in a group
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function forumListResponseParser(broker, responseStatus, xmlDoc) {
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if (responseStatus == 200 && xmlDoc != null) {
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// node ref for iterating
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var node;
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// for compatibility with rss
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var lastModified = new Date();
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// init result items array
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var items = [];
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// extract items for all group elements
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var elements = xmlDoc.getElementsByTagName("group");
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for (var i = 0; i < elements.length; i++) {
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var forumid = elements[i].getAttribute("id");
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var forumtitle = elements[i].getAttribute("title");
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items.push({ id: forumid, title: forumtitle});
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}
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// update was completed successfully
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return { status: "ok", lastModified: lastModified, items: items };
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} else {
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// update failed
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return { status: "error" };
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}
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}
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// FeedPresenter implementation for forum groups
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function ForumsListFeedPresenter(rssreader){
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if (rssreader) {
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this.init(rssreader);
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}
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}
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// ForumsListFeedPresenter is a subclass of ButtonFeedPresenter
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ForumsListFeedPresenter.prototype = new ButtonFeedPresenter(null);
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// ForumsListFeedPresenter constructor
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ForumsListFeedPresenter.prototype.init = function(rssreader) {
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ButtonFeedPresenter.prototype.init.call(this, rssreader);
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}
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// forum has been selected, create a reader showing threads in the forum
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ForumsListFeedPresenter.prototype.feedClicked = function(event){
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var buttonid = event.source.id;
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if (buttonid == "latestPosts") {
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// show latest posts
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var url = forumFeedURL + "&forumids=";
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// append requested forum ids
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for( var i = 0; i < this.items.length; i++) {
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url += this.items[i].id + ",";
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}
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var latestPostsView = new RssReader(
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"Latest posts in " + this.rssreader.feedName,
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url,
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new LatestPostsFeedPresenter(null),
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this.rssreader,
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null);
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latestPostsView.show();
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}
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else {
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var forumid = this.items[buttonid].id;
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var forumtitle = this.items[buttonid].title;
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var url = forumFeedURL + forumsForumSpecQuery + forumid;
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var forumListView = new RssReader(forumtitle, url, new ThreadListFeedPresenter(null), this.rssreader, null);
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forumListView.show();
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}
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}
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// Create and add controls to be shown before items list.
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ForumsListFeedPresenter.prototype.addPreambleItems = function(){
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var feedItemControl = new NavigationButton("latestPosts", "blueright.gif", "Latest posts in " + this.rssreader.feedName);
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var self = this;
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feedItemControl.addEventListener("ActionPerformed", function(event) { self.feedClicked(event); });
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this.rssreader.addControl(feedItemControl);
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}
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// ///////////////////////////////////////////////////////////////////////////
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// List of threads in a forum
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// response parser for thread list is the usual rss parser
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// FeedPresenter implementation for forum groups
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function ThreadListFeedPresenter(rssreader){
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if (rssreader) {
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this.init(rssreader);
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}
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}
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// ThreadListFeedPresenter is a subclass of ButtonFeedPresenter
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ThreadListFeedPresenter.prototype = new ButtonFeedPresenter(null);
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// ThreadListFeedPresenter constructor
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ThreadListFeedPresenter.prototype.init = function(rssreader) {
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ButtonFeedPresenter.prototype.init.call(this, rssreader);
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}
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// Handle the click on a specific item
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ThreadListFeedPresenter.prototype.feedClicked = function(event){
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var buttonid = event.source.id;
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if (buttonid == "newThread") {
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// extract forum id from rssreader.feedURL
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var ind = this.rssreader.feedURL.indexOf(forumsForumSpecQuery);
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var forumid = this.rssreader.feedURL.substring( ind + forumsForumSpecQuery.length);
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var postForm = new ForumPostForm(this.rssreader, forumid);
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postForm.show();
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}
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else {
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var weburl = this.items[buttonid].url;
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// extract thread id from url. looking for t=xxx
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var ind1 = weburl.indexOf("?t=");
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if (ind1 == -1) {
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ind1 = weburl.indexOf("&t=");
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}
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if (ind1 != -1) {
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var threadid = "";
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var ind2 = weburl.indexOf("&", ind1);
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if (ind2 == -1) {
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threadid = weburl.substring(ind1 + 3); // ?t=
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}
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else {
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threadid = weburl.substring(ind1 + 3, ind2); // ?t=
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}
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var url = forumThreadUrl + threadid;
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var title = this.items[buttonid].title;
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if (title.length > 30) {
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title = title.substring(0, 30) + "...";
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}
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var threadView = new RssReader(title, url, new ThreadFeedPresenter(null), this.rssreader, threadResponseParser);
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threadView.show();
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}
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}
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}
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// Create and add controls to be shown before items list.
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ThreadListFeedPresenter.prototype.addPreambleItems = function(){
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var feedItemControl = new NavigationButton("newThread", "blueright.gif", "Post a new thread");
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var self = this;
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feedItemControl.addEventListener("ActionPerformed", function(event) { self.feedClicked(event); });
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this.rssreader.addControl(feedItemControl);
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}
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// ///////////////////////////////////////////////////////////////////////////
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// List of messages in a thread
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// response parser for thread list
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function threadResponseParser(broker, responseStatus, xmlDoc) {
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if (responseStatus == 200 && xmlDoc != null) {
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// node ref for iterating
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var node;
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// for compatibility with rss
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var lastModified = new Date();
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// init result items array
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var items = [];
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// iterate over message elements
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var elements = xmlDoc.getElementsByTagName("message");
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for (var i = 0; i < elements.length; i++) {
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var postid;
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var threadid;
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var username;
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var title;
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var dateline;
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var pagetext;
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var isdeleted;
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// extract info about the post
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node = elements[i].firstChild;
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while (node != null) {
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if ( node.nodeName == "postid" ) postid=getTextOfNode(node);
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else if ( node.nodeName == "threadid" ) threadid=getTextOfNode(node);
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else if ( node.nodeName == "username" ) username=getTextOfNode(node);
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else if ( node.nodeName == "title" ) title=getTextOfNode(node);
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else if ( node.nodeName == "dateline" ) dateline=getTextOfNode(node);
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else if ( node.nodeName == "pagetext" ) pagetext=getTextOfNode(node);
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else if ( node.nodeName == "isdeleted" ) isdeleted=getTextOfNode(node);
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node = node.nextSibling;
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}
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if ( isdeleted == 1 ) continue;
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items.push({
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postid: postid,
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threadid: threadid,
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username: username,
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title: title,
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dateline: dateline,
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pagetext: pagetext
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});
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}
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// update was completed successfully
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return { status: "ok", lastModified: lastModified, items: items };
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} else {
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// update failed
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return { status: "error" };
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}
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}
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// FeedPresenter implementation for forum groups
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function ThreadFeedPresenter(rssreader){
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if (rssreader) {
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this.init(rssreader);
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}
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}
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// ThreadFeedPresenter is a subclass of HtmlFeedPresenter
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ThreadFeedPresenter.prototype = new HtmlFeedPresenter(null);
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// ThreadFeedPresenter constructor
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ThreadFeedPresenter.prototype.init = function(rssreader) {
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HtmlFeedPresenter.prototype.init.call(this, rssreader);
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}
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// Handle the click on a specific item
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ThreadFeedPresenter.prototype.feedClicked = function(event){
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// do nothing
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}
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// Create a control that represents this item and add it to
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// parent rss reader
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ThreadFeedPresenter.prototype.show = function(item) {
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// get a feed item control from the pool or create one and
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// place it in the pool if there aren't enough feed item controls
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var feedItemControl = new ContentPanel(null, null, null, true);
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// initialize feed item control
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var title = item.title;
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if ( !title || title.length == 0 ) {
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title = "Re:";
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item.title = title;
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}
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feedItemControl.setCaption(bbcode2html(title));
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feedItemControl.setContent(this.getContentHTMLForFeedItem(item));
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feedItemControl.setExpanded(true);
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// add the feed item control to the main view
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this.rssreader.feedItemControls.push(feedItemControl);
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this.rssreader.addControl(feedItemControl);
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}
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// Generate HTML content from the feed item
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ThreadFeedPresenter.prototype.getContentHTMLForFeedItem = function (item){
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var buf = "";
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// item date
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if (item.dateline != null) {
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var date = new Date();
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date.setTime(item.dateline*1000);
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buf += "<div class=\"FeedItemDate\">" ;
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if ( item.username != null ) {
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buf += item.username + ", ";
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}
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buf += date + "</div>";
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}
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// item description
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if (item.pagetext != null) {
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var text = bbcode2html(item.pagetext);
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text = text.replace(/\r\n/g, "<br>");
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buf += "<div class=\"FeedItemDescription\">" + text + "</div>";
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buf += "<div class=\"FeedItemLink\">";
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buf += "<a href=\"JavaScript:void(0)\" onclick=\"showReplyForm("
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+ item.threadid+ "," + item.postid + ", '" + item.title
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+ "'); return false;\">";
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buf += "<strong>Reply to this post<strong></a>"
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buf += "</div>";
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}
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return buf;
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}
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// Show the reply-to-post form
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function showReplyForm(threadid, postid, title) {
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var replyForm = new ForumReplyForm(uiManager.currentView, threadid, postid, title);
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replyForm.show();
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}
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// ///////////////////////////////////////////////////////////////////////////
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// Latest posts - same as ThreadListFeedPresenter, only has no preamble items
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// because it doesn't show one thread (so we can't post to latest items)...
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// FeedPresenter implementation for latest posts
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function LatestPostsFeedPresenter(rssreader){
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if (rssreader) {
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this.init(rssreader);
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}
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}
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LatestPostsFeedPresenter.prototype = new ThreadListFeedPresenter(null);
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// ForumGroupsFeedPresenter "Constructor"
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LatestPostsFeedPresenter.prototype.init = function(rssreader) {
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ButtonFeedPresenter.prototype.init.call(this, rssreader);
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}
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// LatestPostsFeedPresenter has no preamble items
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LatestPostsFeedPresenter.prototype.addPreambleItems = function(){
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}
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// ///////////////////////////////////////////////////////////////////////////
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// Utilities
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// Forum posts can be be quite messy and include bbcodes, smilies etc.
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// This function does the minimum by stripping bbcodes and such
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function sanitize(text) {
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var prevind = 0;
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var ind = text.indexOf("[");
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if ( ind == -1 ) return text;
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var buf = "";
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while ( ind != -1 ) {
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426 |
buf += text.substring(prevind, ind);
|
|
427 |
var ind2 = text.indexOf("]", ind);
|
|
428 |
if ( ind2 != -1 ) {
|
|
429 |
prevind = ind2+1;
|
|
430 |
} else {
|
|
431 |
break;
|
|
432 |
}
|
|
433 |
ind = text.indexOf("[", prevind);
|
|
434 |
}
|
|
435 |
if ( prevind > 0 && prevind < text.length) {
|
|
436 |
buf += text.substring(prevind);
|
|
437 |
}
|
|
438 |
return buf;
|
|
439 |
}
|
|
440 |
|
|
441 |
|
|
442 |
|
4
|
443 |
// feeds contain bbcodes - this function should turn the bbcode markup
|
|
444 |
// to HTML
|
|
445 |
function bbcode2html(s) {
|
|
446 |
var prevind = 0;
|
|
447 |
var buf = "";
|
|
448 |
var ind = s.indexOf("[");
|
|
449 |
if ( ind == -1 ) return s;
|
|
450 |
while ( ind != -1 ) {
|
|
451 |
buf += s.substring(prevind, ind);
|
|
452 |
var ind2 = s.indexOf("]", ind); // end of tag
|
|
453 |
var fulltag = s.substring(ind+1,ind2);
|
|
454 |
var tag = fulltag;
|
|
455 |
var ind3 = s.indexOf("=", ind); // end of tag name, eg. [URL=http...]
|
|
456 |
if ( ind3 != -1 && ind3 < ind2) {
|
|
457 |
tag = s.substring(ind+1,ind3);
|
|
458 |
}
|
|
459 |
var ind4 = s.indexOf("[/"+tag+"]");
|
|
460 |
var tagContent = s.substring(ind2+1, ind4);
|
|
461 |
buf += convertTag(tag, fulltag, tagContent);
|
|
462 |
if ( ind4 != -1 ) {
|
|
463 |
prevind = s.indexOf(']',ind4) + 1;
|
|
464 |
} else {
|
|
465 |
break;
|
|
466 |
}
|
|
467 |
ind = s.indexOf("[", prevind);
|
|
468 |
}
|
|
469 |
buf += s.substring(prevind);
|
|
470 |
return buf;
|
|
471 |
}
|
|
472 |
|
|
473 |
function convertTag(tag, fulltag, tagContent) {
|
|
474 |
tag = tag.toLowerCase();
|
|
475 |
switch(tag) {
|
|
476 |
case 'b':case 'i':case 'u':case 's':case 'sup':case 'sub':case 'h1':case 'h2':case 'h3':case 'h4':case 'h5':case 'h6':case 'table':case 'tr':case 'th':case 'td':
|
|
477 |
{
|
|
478 |
return '<' + tag + '>' + tagContent + "</" + tag + ">";
|
|
479 |
}
|
|
480 |
case 'quote': return '<blockquote><i>' + tagContent + '</i></blockquote>';
|
|
481 |
case 'url': {
|
|
482 |
var eqsign = fulltag.indexOf("=");
|
|
483 |
if ( eqsign > -1 ) {
|
|
484 |
return '<div class="FeedItemLink"><a href="JavaScript:void(0)" onclick="openURL( '
|
|
485 |
+ fulltag.substring(eqsign+1)
|
|
486 |
+ '") ><i>'
|
|
487 |
+ tagContent
|
|
488 |
+ '</i></a></div>';
|
|
489 |
} else {
|
|
490 |
return '<div class="FeedItemLink"><a href="JavaScript:void(0)" onclick="openURL( '
|
|
491 |
+ tagContent
|
|
492 |
+ '") ><i>'
|
|
493 |
+ tagContent
|
|
494 |
+ '</i></a></div>';
|
|
495 |
}
|
|
496 |
}
|
|
497 |
}
|
|
498 |
}
|