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

     2 // (c)2009 Symbian Foundation

     3 // ////////////////////////////////////////////////////////////////////////////

     4 

     5 // Feed presentation classes

     6 

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

     8 function FeedPresenter(rssreader){

     9 	if (rssreader) {

    10 		this.init(rssreader);

    11 	}

    12 }

    13 

    14 // FeedPresenter "Constructor"

    15 FeedPresenter.prototype.init = function(rssreader){

    16 	this.rssreader = rssreader;

    17 }

    18 

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

    20 // parent rss reader

    21 FeedPresenter.prototype.show = function(item){

    22 }

    23 

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

    25 FeedPresenter.prototype.addPreambleItems = function(){

    26 }

    27 

    28 // No items returned, show "No messages"

    29 FeedPresenter.prototype.showNoItems = function(){

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

    31 	this.rssreader.addControl(label);

    32 }

    33 

    34 // Implementation of FeedPresenter that shows feed in a 

    35 // ContentPanel

    36 function HtmlFeedPresenter(rssreader) {

    37 	if (rssreader) {

    38 		this.init(rssreader);

    39 	}

    40 	this.expanded = false;

    41 }

    42 

    43 // HtmlFeedPresenter is a subclass of FeedPresenter

    44 HtmlFeedPresenter.prototype = new FeedPresenter(null);

    45 

    46 // HtmlFeedPresenter "constructor"

    47 HtmlFeedPresenter.prototype.init = function(rssreader) {

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

    49 }

    50 

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

    52 // parent rss reader

    53 HtmlFeedPresenter.prototype.show = function(item) {

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

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

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

    57 

    58 		// initialize feed item control

    59 		feedItemControl.setCaption(item.title);

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

    61 		feedItemControl.setExpanded(this.expanded);

    62 		

    63 		// add the feed item control to the main view

    64 		this.rssreader.feedItemControls.push(feedItemControl);

    65 		this.rssreader.addControl(feedItemControl);

    66 }

    67 

    68 // Returns the content HTML for a feed item.

    69 HtmlFeedPresenter.prototype.getContentHTMLForFeedItem = function (item){

    70 	var buf = "";

    71 	

    72 	// item date

    73 	if (item.date != null) {

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

    75 		if ( item.author != null ) {

    76 			buf += item.author + ", ";

    77 		}

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

    79 	}

    80 	

    81 	// item description

    82 	if (item.description != null) {

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

    84 	}

    85 

    86 	if (item.url != null) {

    87 		// blogs

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

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

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

    91             buf += "Read more...";

    92             buf += "</a>";

    93         buf += "</div>";

    94 	}

    95 	

    96 	return buf;

    97 }

    98 

    99 

   100 // Implementation of FeedPresenter that shows feed as a clickable

   101 // button that shows feed entry title as label

   102 function ButtonFeedPresenter(rssreader) {

   103 	if (rssreader) {

   104 		this.init(rssreader);

   105 	}

   106 	this.indexCounter = 0;

   107 	this.items = [];

   108 }

   109 

   110 // ButtonFeedPresenter is a subclass of FeedPresenter

   111 ButtonFeedPresenter.prototype = new FeedPresenter(null);

   112 

   113 // ButtonFeedPresenter "constructor"

   114 ButtonFeedPresenter.prototype.init = function(rssreader) {

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

   116 }

   117 

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

   119 // parent rss reader

   120 ButtonFeedPresenter.prototype.show = function(item) {

   121 	this.items[this.indexCounter] = item;

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

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

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

   125 

   126 	// add button press handler

   127     var self = this;

   128 	feedItemControl.addEventListener("ActionPerformed", 

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

   130 

   131 	this.indexCounter++;

   132 		

   133 	// add the feed item control to the main view

   134 	this.rssreader.feedItemControls.push(feedItemControl);

   135 	this.rssreader.addControl(feedItemControl);

   136 }

   137 

   138 // Handle the button-press

   139 ButtonFeedPresenter.prototype.feedClicked = function(event){

   140 	var clickedButton = event.source;

   141 	var id = clickedButton.id;

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

   143 	

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

   145 		// hack for printable wiki pages

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

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

   148 		openURL(url);

   149 	}

   150 	else {

   151 		openURL(url);

   152 	}

   153 }

   154 

   155