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

// Symbian Foundation Example Code

//

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

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

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

// the Symbian Foundation. 

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

var MILLIS_IN_A_DAY = 24*60*60*1000;

function BookmarksViewItem(articleTitle, articleContent, articleBase, pos) {

	var d = new Date();

	this.articleTitle = articleTitle;

	this.articleContent = articleContent; 

	this.pos = pos;

	this.articleBase = articleBase;

	this.timestamp = d.getTime();

}

function BookmarksView (){

	try {

		ListView.prototype.init.call(this, null, null);	

		var caption = new NavigationButton(1, "titlebar.png", "Bookmarks", true);

		caption.addEventListener("ActionPerformed", function(){wikiHomeView.show();});

		this.addControl(caption);

		this.previousView = null;

		this.items = new Array();

		this.startindex = 0;

		this.endindex = 0;

		this.rendered = false;	

		this.todayControl = null;

		this.loadItems();

	}catch(w) {alert(w);}

}

BookmarksView.prototype = new ListView(null, null);

BookmarksView.prototype.items = null;

BookmarksView.prototype.addItem = function(articleTitle, articleContent, articleBase){

	try {

		this.removeItem(articleTitle);

		this.rendered = false;

		var item = null;

		item = new BookmarksViewItem(articleTitle, null /*articleContent*/, articleBase, this.endindex);

		this.items[this.endindex - this.startindex] = item;

		this.endindex++;

		this.saveItem(item);

	}catch(w) { alert(w);}

}

BookmarksView.prototype.saveItem = function(item){

	if ( window.widget ) {

//		alert("BM: Saving item: pos=" + item.pos +", title=" + item.articleTitle +", ts=" + item.timestamp

//		+ "titlekey:" + getBookmarksTitleKey(item.pos) + ", timekey: " + getBookmarksTimeKey(item.pos)	);

		widget.setPreferenceForKey(item.articleTitle, getBookmarksTitleKey(item.pos));

		//widget.setPreferenceForKey(item.articleContent, getBookmarksContentKey(item.pos));

		widget.setPreferenceForKey(item.articleBase, getBookmarksBaseKey(item.pos));

		widget.setPreferenceForKey(""+item.timestamp, getBookmarksTimeKey(item.pos));

		this.storeIndex();

	}

}

BookmarksView.prototype.storeIndex = function () {

	widget.setPreferenceForKey("" + this.startindex, "boox-start");

	widget.setPreferenceForKey("" + this.endindex, "boox-end");

//	alert("BM: index stored, start:"+this.startindex + ", end:"+this.endindex);

}

BookmarksView.prototype.clear = function(){

	this.items = new Array();

	if (window.widget) {

		for (var i = this.startindex; i < this.endindex + 1; i++) {

			widget.setPreferenceForKey(null, getBookmarksTitleKey(i));

			widget.setPreferenceForKey(null, getBookmarksContentKey(i));

			widget.setPreferenceForKey(null, getBookmarksBaseKey(i));

			widget.setPreferenceForKey(null, getBookmarksTimeKey(i));

		}

		this.startindex = 0;

		this.endindex = 0;

		this.storeIndex();

		this.rendered = false;

		this.render();

	}

}

BookmarksView.prototype.loadItems = function(){

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

	var self = this;

	setTimeout(function(){self.doLoadItems();},0);

}

BookmarksView.prototype.doLoadItems = function(){

	if ( window.widget ) {

		var d = new Date();

		var now = d.getTime();

		this.items = new Array();

		var tmpstart 	= 	widget.preferenceForKey("boox-start");

		var tmpend 		= 	widget.preferenceForKey("boox-end");

		this.startindex = (( tmpstart != undefined && tmpstart != null ) ? parseInt(tmpstart) : 0);

		this.endindex = (( tmpend != undefined && tmpend != null ) ? parseInt(tmpend) : 0);

//		alert("BM: startindex=" + this.startindex +", endindex=" + this.endindex);

		for (var i = this.startindex; i < this.endindex; i++) {

			var pos =  i - this.startindex;

			var title = widget.preferenceForKey(getBookmarksTitleKey(i));

//			alert("BM: Examining item: i=" + i + ", pos=" + pos +", title=" + title );

			if ( !title || title == null || title == "null") continue;

			var item = new BookmarksViewItem(title,null,null,i);

			item.articleContent = widget.preferenceForKey(getBookmarksContentKey(i));

			item.articleBase = widget.preferenceForKey(getBookmarksBaseKey(i));

			item.timestamp = parseFloat(widget.preferenceForKey(getBookmarksTimeKey(i)));

			item.pos = i;

			this.items[pos] = item;

//			alert("BM: Loaded item: i=" + i + ", pos=" + pos +", title=" + title +", ts=" + item.timestamp);

		}

		this.rendered = false;

	}

	uiManager.hideNotification();

}

BookmarksView.prototype.render = function(){

	if ( this.rendered ) return;

	var d = new Date();

	var now = d.getTime();

	// clear components

	this.removeAllControls();

	var caption = new NavigationButton(1, "titlebar.png", "Bookmarks", true);

	caption.addEventListener("ActionPerformed", function(){

		wikiHomeView.show();

	});

	this.addControl(caption);

	// add components for bookmarks items, up to today

	var thecontrol = new ContentPanel(null, "All bookmarks", "", true, true);

	thecontrol.setContent(this.renderBookmarksContent(0, now));

	this.addControl(thecontrol);

	this.rendered = true;

}

BookmarksView.prototype.renderBookmarksContent = function (from , to) {

	var buf = "<table class='historytable'>";

	for ( var i = this.endindex ; i >= this.startindex ; i -- ) {

		var ind = i - this.startindex;

		if ( this.items[ind] == undefined || this.items[ind] == null ) continue;

		if ( this.items[ind].timestamp < from ) break;

		if ( this.items[ind].timestamp < to ) {

			buf += this.renderBookmarksItem(this.items[ind]);			

		}

	}

	buf += "</table>"

	return buf;

}

BookmarksView.prototype.renderBookmarksItem = function(item){

	if ( item == undefined || item == null ) return "";

    var buf = "<tr><td><small>";

	buf += shortFormatTime(item.timestamp);

	buf += "</small></td><td width=70%>";	 

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

	buf += "<a href=\"JavaScript:void(0)\" onclick=\"wikiBookmarksView.goTo(" ;

	buf += item.pos;

	buf +=  "); return false;\">";

	buf += "<strong>";

	buf += shorten(item.articleTitle, 30);

	buf += "<strong></a>";

	buf += "</div>";

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

	buf += "<a href=\"JavaScript:void(0)\" onclick=\"event.stopPropagation();wikiBookmarksView.deleteItem(" ;

	buf += item.pos;

	buf +=  "); wikiBookmarksView.render(); return false;\">";

	buf += "<img src=delete.png border=0></a>";

	buf += "</div>";

	buf += "</td></tr>";

	return buf;

}

BookmarksView.prototype.deleteItem = function(ind){	

	try {

	//	alert("BM: removeItem: ind=" + ind);

		// remove item

		this.items[ind-this.startindex] = null;

		if (window.widget) {

			widget.setPreferenceForKey(null, getBookmarksTitleKey(ind));

			widget.setPreferenceForKey(null, getBookmarksContentKey(ind));

			widget.setPreferenceForKey(null, getBookmarksBaseKey(ind));

			widget.setPreferenceForKey(null, getBookmarksTimeKey(ind));

		}

		this.rendered = false;

	}catch(ex) { alert(ex);}

}

BookmarksView.prototype.goTo = function(pos){

	wikiBrowse(this.items[pos-this.startindex].articleTitle, false, this.items[pos-this.startindex].articleBase); // true means don't re-add to history	 	

}

BookmarksView.prototype.show = function(){

	try {

		this.render();

	}catch(e){ alert(e);}

	View.prototype.show.call(this);

}

// abstract function for updating per-view menu

// only called if window.widget is defined

BookmarksView.prototype.setupMenu = function(){

	if ( window.widget ) {

		menu.clear();

		var clearMenuItem = new MenuItem("Clear", MENU_ITEM_BOOKMARKS_CLEAR);

		var self = this; 

		clearMenuItem.onSelect = function(){self.clear();};

		menu.append(clearMenuItem);

		var self = this;

		var searchMenuItem = new MenuItem("Search", MENU_ITEM_MAIN_SEARCH); 

		searchMenuItem.onSelect = function(){wikiHomeView.show();};

		menu.append(searchMenuItem);

		var historyMenuItem = new MenuItem("History", MENU_ITEM_MAIN_HISTORY); 

		historyMenuItem.onSelect = function(){wikiHistoryView.previousView = self; wikiHistoryView.show();};

		menu.append(historyMenuItem);

		var bookmarksMenuItem = new MenuItem("Bookmarks", MENU_ITEM_MAIN_BOOKMARKS); 

		bookmarksMenuItem.onSelect = function(){wikiBookmarksView.show();};

		menu.append(bookmarksMenuItem);

		addHelpMenuItems();

	}

}

function getBookmarksKeyBase(pos) {

	return "boox." + pos + "."; 

}

function getBookmarksTitleKey(pos) {

	return getBookmarksKeyBase(pos) + "title"; 

}

function getBookmarksContentKey(pos) {

	return getBookmarksKeyBase(pos) + "content"; 

}

function getBookmarksTimeKey(pos) {

	return getBookmarksKeyBase(pos) + "time"; 

}

function getBookmarksBaseKey(pos) {

	return getHistoryKeyBase(pos) + "base"; 

}

BookmarksView.prototype.removeItem = function(articleTitle){

	// find index

	var ind = this.findItemIdFromTitle(articleTitle)

	if ( ind == -1 ) {

		return;

	}

	deleteItem(ind);

}

BookmarksView.prototype.findItemIdFromTitle = function(title) {

	var ind = -1;

	for ( var i = this.startindex ; i < this.endindex + 1 ; i ++ ) {

		var arrind = i-this.startindex;

		if ( this.items[arrind] != undefined && this.items[arrind] != null && title == this.items[arrind].articleTitle) {

			ind = i;

			break;

		}

	}

	return ind;

}

// return already downloaded content for an article or null

// if we don't have it

BookmarksView.prototype.getContentForArticle = function(articleTitle){

	if (window.widget) {

		var i = this.findItemIdFromTitle(articleTitle);

		return widget.preferenceForKey(getBookmarksContentKey(i));

	}

	return null;

}