/*

	GMapsOverlay v1.0

	by André Fiedler (http://www.visualdrugs.net) - GNU license.

*/



var GMapsOverlay = {



	init: function(options){

		this.options = Object.extend({

			resizeDuration: 400,

			resizeTransition: Fx.Transitions.sineInOut,

			width: 250,

			height: 250,

			animateCaption: true

		}, options || {});

		

		if(!GBrowserIsCompatible()) return false;

		

		this.geocoder = new GClientGeocoder();



		this.anchors = [];

		$each(document.links, function(el){

			if (el.rel && el.rel.test(/^gmapsoverlay/i)){

				el.onclick = this.click.pass(el, this);

				this.anchors.push(el);

			}

		}, this);

		this.eventKeyDown = this.keyboardListener.bindAsEventListener(this);

		this.eventPosition = this.position.bind(this);



		this.overlay = new Element('div').setProperty('id', 'gmOverlay').injectInside(document.body);



		this.center = new Element('div').setProperty('id', 'gmCenter').setStyles({

																				 

																				 width: this.options.width+'px', 

																				 height: this.options.height+'px', 

																				 marginLeft: '-'+(this.options.width/2)+'px'

																				 }).injectInside(document.body);

		this.maplayer = new Element('div').setProperty('id', 'gmMap').injectInside(this.center);

		

		this.map = new GMap2(this.maplayer);

		this.map.addControl(new GLargeMapControl());

		this.map.addControl(new GMapTypeControl());

		

		this.bottomContainer = new Element('div').setProperty('id', 'gmBottomContainer').setStyle('display', 'none').injectInside(document.body);

		this.bottom = new Element('div').setProperty('id', 'gmBottom').injectInside(this.bottomContainer);

		new Element('a').setProperties({id: 'gmCloseLink', href: '#'}).injectInside(this.bottom).onclick = this.overlay.onclick = this.close.bind(this);

		this.caption = new Element('div').setProperty('id', 'gmCaption').injectInside(this.bottom);

		new Element('div').setStyle('clear', 'both').injectInside(this.bottom);

		

		this.center.style.display = 'none';

		

		var nextEffect = this.nextEffect.bind(this);

		this.fx = {

			overlay: this.overlay.effect('opacity', {duration: 500, fps:100}).hide(),

			resize: this.center.effects({duration: this.options.resizeDuration, transition: this.options.resizeTransition, onComplete: nextEffect}),

			maplayer: this.maplayer.effect('opacity', {duration: 500, onComplete: nextEffect}),

			bottom: this.bottom.effect('margin-top', {duration: 400, onComplete: nextEffect})

		};

		

	},



	click: function(link){

		return this.show(link.href);

	},



	show: function(link){

		this.link = link;

		this.position();

		this.setup(true);

		this.top = window.getScrollTop() + (window.getHeight() / 15);

		this.center.setStyles({top: this.top+'px', display: ''});

		this.fx.overlay.start(0.8);

		return this.changeLink();

	},



	position: function(){

		this.overlay.setStyles({top: window.getScrollTop()+'px', height: window.getHeight()+'px'});

	},



	setup: function(open){

		var elements = $A(document.getElementsByTagName('object'));

		if (window.ie) elements.extend(document.getElementsByTagName('select'));

		elements.each(function(el){ el.style.visibility = open ? 'hidden' : ''; });

		var fn = open ? 'addEvent' : 'removeEvent';

		window[fn]('scroll', this.eventPosition)[fn]('resize', this.eventPosition);

		document[fn]('keydown', this.eventKeyDown);

		this.step = 0;

	},



	keyboardListener: function(event){

		this.close();

	},



	changeLink: function(){

		this.step = 1;

		this.bottomContainer.style.display = 'none';

		this.fx.maplayer.hide();

		this.center.className = 'gmLoading';

		this.showAddress(decodeURI(this.link.substring(this.link.indexOf('q=')+2)));

		this.nextEffect();

		return false;

	},



	nextEffect: function(){

		switch (this.step++){

		case 1:

			this.center.className = '';



			this.caption.setHTML("<a href=\""+this.link+"\" target=\"_blank\">Go to Google Maps</a>");

			if (this.center.clientHeight != this.maplayer.offsetHeight){

				this.fx.resize.start({height: this.maplayer.offsetHeight, width: this.maplayer.offsetWidth, marginLeft: -this.maplayer.offsetWidth/2});

				break;

			}

			this.step++;

		case 2:

			this.bottomContainer.setStyles({top: (this.top + this.center.clientHeight)+'px', height: '0px', marginLeft: this.center.style.marginLeft, width: this.center.clientWidth+'px', display: ''});

			this.fx.maplayer.start(1);

			break;

		case 3:

			if (this.options.animateCaption){

				this.fx.bottom.set(-this.bottom.offsetHeight);

				this.bottomContainer.style.height = '';

				this.fx.bottom.start(0);

				break;

			}

			this.bottomContainer.style.height = '';

		case 4:

			this.step = 0;

		}

	},



	close: function(){

		if (this.step < 0) return;

		this.step = -1;

		for (var f in this.fx) this.fx[f].stop();

		this.center.style.display = this.bottomContainer.style.display = 'none';

		this.fx.overlay.chain(this.setup.pass(false, this)).start(0);

		return false;

	},

	

	showAddress: function(address){

		this.geocoder.getLatLng(

		address,

		function(point){

			if(point){

				this.map.setCenter(point, 15);

				var marker = new GMarker(point);

				this.map.addOverlay(marker);

				marker.openInfoWindowHtml(address);

			}

			else

			{

				this.close();

				alert('This address could not be found.');

			}

		}.bind(this));

	}

};

window.addEvent('domready', GMapsOverlay.init.bind(GMapsOverlay));