/*
Sirius Tuner Widget
by Tanner Jepsen

Not affiliated with or supported by Sirius Radio Online

Portions Copyright (c) 2005 Jason William.  All rights reserved.
Copyright (c) 2005 Tanner Jepsen.  All rights reserved.
*/

include("Screen.js");

/**
 * The main screen for the Sirius player which will display channel info while
 * playing.
 */
function MainScreen(player) {
	// reference to the Sirius Tuner 
	this.player = player;
	
	// set up the screen elements
	this.channelDisplay = new Text();	
	this.genreDisplay = new Text();
	this.artistDisplay = new Text();  
	this.titleDisplay = new Text();     
	this.albumDisplay = new Text();
	this.statusDisplay = new Text();
	this.presetBankDisplay = new Text();
	
	// initialize the screen
	this.init();
}

// extend the Screen object
MainScreen.prototype = new Screen();

MainScreen.prototype.init = function() {
	this.channelDisplay.alignment = "left";
	this.channelDisplay.size = 10;
	this.channelDisplay.bgColor = "#000000";
	this.channelDisplay.bgOpacity = 180;
	this.channelDisplay.color = "#FFFFFF";
	this.channelDisplay.opacity = 0;
	this.channelDisplay.data = "Channel";
	this.channelDisplay.window = main;
	this.channelDisplay.hOffset = 1;
	this.channelDisplay.vOffset = this.channelDisplay.height - 1
	this.addSubView(this.channelDisplay);

	this.genreDisplay.alignment = "right";
	this.genreDisplay.size = 10;
	this.genreDisplay.bgColor = "#000000";
	this.genreDisplay.bgOpacity = 180;
	this.genreDisplay.color = "#FFFFFF";
	this.genreDisplay.opacity = 0;
	this.genreDisplay.data = "Genre";
	this.genreDisplay.window = main;
	this.genreDisplay.hOffset = screen.width - 1;
	this.genreDisplay.vOffset = this.genreDisplay.height - 1;
	this.addSubView(this.genreDisplay);
	
	this.artistDisplay.width = screen.width - 6;
	this.artistDisplay.alignment = "left";
	this.artistDisplay.size = 16; //12
	this.artistDisplay.opacity = 0;
	this.artistDisplay.data = "Artist";
	this.artistDisplay.scrolling = "autoLeft";
	this.artistDisplay.window = main;
	this.artistDisplay.hOffset = 3;
	this.artistDisplay.vOffset = (screen.height / 3) + 5;
	this.addSubView(this.artistDisplay);
	
	this.titleDisplay.width = this.artistDisplay.width;
	this.titleDisplay.alignment = "left";
	this.titleDisplay.size = 16; //12
	this.titleDisplay.opacity = 0;
	this.titleDisplay.data = "Title";
	this.titleDisplay.scrolling = "autoLeft";
	this.titleDisplay.window = main;
	this.titleDisplay.hOffset = 3;
	this.titleDisplay.vOffset = this.artistDisplay.vOffset + this.artistDisplay.height
	this.addSubView(this.titleDisplay);
	
	this.albumDisplay.width = this.titleDisplay.width;
	this.albumDisplay.alignment = "left";
	this.albumDisplay.size = 10;
	this.albumDisplay.opacity = 0;
	this.albumDisplay.data = "Title";
	this.albumDisplay.scrolling = "autoLeft";
	this.albumDisplay.window = main;
	this.albumDisplay.hOffset = 3;
	this.albumDisplay.vOffset = this.titleDisplay.vOffset + this.titleDisplay.height;
	this.addSubView(this.albumDisplay);
	
	this.statusDisplay.width = screen.width - 27;
	this.statusDisplay.alignment = "left";
	this.statusDisplay.size = 8;
	this.statusDisplay.opacity = 0;
	this.statusDisplay.data = "Ready";
	this.statusDisplay.scrolling = "autoLeft";
	this.statusDisplay.window = main;
	this.statusDisplay.hOffset = 2;
	this.statusDisplay.vOffset = screen.height - 2;
	this.addSubView(this.statusDisplay);
	
	this.presetBankDisplay.width = 20;
	this.presetBankDisplay.size = 8;
	this.presetBankDisplay.style = "bold";
	this.presetBankDisplay.opacity = 255;
	this.presetBankDisplay.data = preferences.lastActivePresetBank.value;
	this.presetBankDisplay.window = main;
	this.presetBankDisplay.hOffset = screen.width - 20;
	this.presetBankDisplay.vOffset = screen.height - 2;
	this.addSubView(this.presetBankDisplay);
	
	this.signalStrength = new Array();
	for (var i = 0; i < 3; i++) {
		this.signalStrength[i] = new Image();
		this.signalStrength[i].src = "Images/signal_tick_" + (i + 1) + ".png";
		this.signalStrength[i].vAlign = "bottom";
		this.signalStrength[i].window = main;
		this.signalStrength[i].opacity = 20;
		this.signalStrength[i].hOffset = screen.width - 12 + (i * 3);
		this.signalStrength[i].vOffset = screen.height - 2;
		this.addSubView(this.signalStrength[i]);
	}
}

/**
 * Sets a message to appear in the status area of the screen.
 */
MainScreen.prototype.setStatusDisplay = function(text) {
	if (this.statusDisplay.data != text) {
		if (this.statusDisplay.opacity > 0) {
			this.statusDisplay.fade(this.statusDisplay.opacity, 0, 1);
		}
		this.statusDisplay.data = text;
		this.statusDisplay.fade(0, 255, 1);
	}
}

MainScreen.prototype.setChannelDisplay = function(ch) {
	this.channelDisplay.data = " " + ch.num + "   " + ch.name;
	this.genreDisplay.data = ch.catname;
	this.channelDisplay.width = this.channelDisplay.width + (screen.width - 6)
			- (this.channelDisplay.width + this.genreDisplay.width);
	this.channelDisplay.opacity = 255;
	this.genreDisplay.opacity = 255;
}

MainScreen.prototype.setMainDisplay = function(ch) {
	log("Updating main display");
	if (ch != null && ch.currentArtist != null) {
		this.artistDisplay.data = ch.currentArtist;
		this.titleDisplay.data = ch.currentTitle;
		this.albumDisplay.data = ""; //ch.currentAlbum;
	}
	else {
		this.artistDisplay.data = ch.name;
		this.titleDisplay.data = "Waiting for data...";
		this.albumDisplay.data = ""; //ch.currentAlbum;
	}
	this.artistDisplay.opacity = 255;
	this.titleDisplay.opacity = 255;
	this.albumDisplay.opacity = 255;
}

MainScreen.prototype.updatePresetBankDisplay = function() {
	this.presetBankDisplay.data = this.player.activePresetBank;	
}

MainScreen.prototype.updateSignalStrength = function(strength) {
	for (var i = 0; i < 3; i++) {
		if (strength >= 100 * ((i + 1) / 3)) {
			this.signalStrength[i].opacity = 255;
		} else if (strength < 100 * (i / 3) || strength == null) {
			this.signalStrength[i].opacity = 20;
		} else {
			var opacity = 255 * ((strength - (100 * (i / 3))) / (100 * (1 / 3)));
			if (opacity < 20) {
				this.signalStrength[i].opacity = 20;
			} else {
				this.signalStrength[i].opacity = opacity;
			}
		}
	}
}

MainScreen.prototype.upButtonClicked = function() {
	this.player.nextChannel();
}

MainScreen.prototype.downButtonClicked = function() {
	this.player.previousChannel();
}

MainScreen.prototype.playButtonClicked = function() {
	this.player.play();
}

MainScreen.prototype.updateChannelData = function() {
	this.setMainDisplay(this.player.siriusTuner.currentChannel);	
}