// ////////////////////////////////////////////////////////////////////////////

// (c)2009 Symbian Foundation

// ////////////////////////////////////////////////////////////////////////////

// Feed presentation classes

// Abstract class used to create controls to represent feed entries.

function FeedPresenter(rssreader){

	if (rssreader) {

		this.init(rssreader);

	}

}

// FeedPresenter "Constructor"

FeedPresenter.prototype.init = function(rssreader){

	this.rssreader = rssreader;

}

// Create a control that represents this item and add it to

// parent rss reader

FeedPresenter.prototype.show = function(item){

}

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

FeedPresenter.prototype.addPreambleItems = function(){

}

// No items returned, show "No messages"

FeedPresenter.prototype.showNoItems = function(){

	var label = new Label(null, null, "No messages");

	this.rssreader.addControl(label);

}

// Implementation of FeedPresenter that shows feed in a 

// ContentPanel

function HtmlFeedPresenter(rssreader) {

	if (rssreader) {

		this.init(rssreader);

	}

	this.expanded = false;

}

// HtmlFeedPresenter is a subclass of FeedPresenter

HtmlFeedPresenter.prototype = new FeedPresenter(null);

// HtmlFeedPresenter "constructor"

HtmlFeedPresenter.prototype.init = function(rssreader) {

	FeedPresenter.prototype.init.call(this, rssreader);

}

// Create a control that represents this item and add it to

// parent rss reader

HtmlFeedPresenter.prototype.show = function(item) {

			// get a feed item control from the pool or create one and

		// place it in the pool if there aren't enough feed item controls

		var feedItemControl = new ContentPanel(null, null, null, true);

		// initialize feed item control

		feedItemControl.setCaption(item.title);

		feedItemControl.setContent(this.getContentHTMLForFeedItem(item));

		feedItemControl.setExpanded(this.expanded);

		// add the feed item control to the main view

		this.rssreader.feedItemControls.push(feedItemControl);

		this.rssreader.addControl(feedItemControl);

}

// Returns the content HTML for a feed item.

HtmlFeedPresenter.prototype.getContentHTMLForFeedItem = function (item){

	var buf = "";

	// item date

	if (item.date != null) {

		buf += "<div class=\"FeedItemDate\">" ;

		if ( item.author != null ) {

			buf += item.author + ", ";

		}

		buf += item.date + "</div>";

	}

	// item description

	if (item.description != null) {

		buf += "<div class=\"FeedItemDescription\">" + item.description + "</div>";

	}

	if (item.url != null) {

		// blogs

        buf += "<div class=\"FeedItemLink\">";

//            buf += "<a href=\"JavaScript:void(0)\" onclick=\"openURL('" + item.title + "', '" + item.url + "'); return false;\">";

            buf += "<a href=\"JavaScript:void(0)\" onclick=\"openURL('" + item.url + "'); return false;\">";

            buf += "Read more...";

            buf += "</a>";

        buf += "</div>";

	}

	return buf;

}

// Implementation of FeedPresenter that shows feed as a clickable

// button that shows feed entry title as label

function ButtonFeedPresenter(rssreader) {

	if (rssreader) {

		this.init(rssreader);

	}

	this.indexCounter = 0;

	this.items = [];

}

// ButtonFeedPresenter is a subclass of FeedPresenter

ButtonFeedPresenter.prototype = new FeedPresenter(null);

// ButtonFeedPresenter "constructor"

ButtonFeedPresenter.prototype.init = function(rssreader) {

	FeedPresenter.prototype.init.call(this, rssreader);

}

// Create a control that represents this item and add it to

// parent rss reader

ButtonFeedPresenter.prototype.show = function(item) {

	this.items[this.indexCounter] = item;

	// get a feed item control from the pool or create one and

	// place it in the pool if there aren't enough feed item controls

	var feedItemControl = new NavigationButton(this.indexCounter, "right.gif", item.title);

	// add button press handler

    var self = this;

	feedItemControl.addEventListener("ActionPerformed", 

		function(event) { self.feedClicked(event); } );

	this.indexCounter++;

	// add the feed item control to the main view

	this.rssreader.feedItemControls.push(feedItemControl);

	this.rssreader.addControl(feedItemControl);

}

// Handle the button-press

ButtonFeedPresenter.prototype.feedClicked = function(event){

	var clickedButton = event.source;

	var id = clickedButton.id;

	var url = this.items[id].url;

	if (url.indexOf("/wiki/index.php")) {

		// hack for printable wiki pages

		var articleName = url.replace(wikiBaseUrl + "/", "");

		url = wikiBaseUrl + "?title=" + articleName + "&action=render";

		openURL(url);

	}

	else {

		openURL(url);

	}

}