Livesearch = Class.create();

Livesearch.prototype = {
	initialize: function(father, url, pars, searchtext) {
		this.father = father;
		this.url = url;
		this.pars = pars;
		this.searchtext = searchtext;
		
		this.searchfield = 's';
		this.loaditem = 'search-loading';
		this.resetitem = 'search-reset';
		this.contentitem = 'search-results';
		this.lastsearch = '';
		this.t = null;
		
		Event.observe(window, "load", this.onLoading.bindAsEventListener(this));
	},
	
	onLoading: function() {
		if ( $(this.father) ) {
			$(this.father).update('<input type="text" id="'+this.searchfield+'" name="'+this.searchfield+'" class="searchinput" autocomplete="off" value="'+this.searchtext+'" /><div id="'+this.resetitem+'"></div><div id="'+this.loaditem+'"></div><div id="'+this.contentitem+'"></div>');
			$(this.resetitem).hide();
			$(this.loaditem).hide();
       		$(this.contentitem).hide();
			this.focusListener = this.onInputFocus.bindAsEventListener(this);
			this.blurListener = this.onInputBlur.bindAsEventListener(this);
			this.keyupListener = this.readyLivesearch.bindAsEventListener(this);
			Event.observe(this.searchfield, 'focus', this.focusListener);
			Event.observe(this.searchfield, 'blur', this.blurListener);
			Event.observe(this.searchfield, 'keyup', this.keyupListener);
		}
	},

	onInputFocus: function() {
		if ($F(this.searchfield) == this.searchtext) {
			$(this.searchfield).value = '';
		}
	},

	onInputBlur: function() {
		if ($F(this.searchfield) == '') {
			$(this.searchfield).value = this.searchtext;
		}
	},

	readyLivesearch: function(event) {
		var code = event.keyCode;
		var currentLivesearch = this;
		if (code == Event.KEY_ESC || ((code == Event.KEY_DELETE || code == Event.KEY_BACKSPACE) && $F(this.searchfield) == '')) {
			this.resetLivesearch();
		} else if (code != Event.KEY_LEFT && code != Event.KEY_RIGHT && code != Event.KEY_DOWN && code != Event.KEY_UP && code != Event.KEY_RETURN) {
			if (this.t) { clearTimeout(this.t) };
	        this.t = setTimeout(this.doLivesearch.bind(this), 400);
		}
	},

	searchComplete: function() {
		Effect.Fade(this.loaditem, { duration: .1});
		Effect.Appear(this.resetitem, { duration: .8});
		Effect.Appear(this.contentitem, {duration: .5});
		Event.observe(this.resetitem, 'click', this.resetLivesearch.bindAsEventListener(this));
	},

	doLivesearch: function() {
		if ($F(this.searchfield) == this.lastsearch) return;
		$(this.resetitem).hide();
		Effect.Appear(this.loaditem, {duration: .1});
		new Ajax.Updater(
			this.contentitem,
			this.url,
			{
				method: 'get',
				parameters: this.pars + encodeURIComponent($F(this.searchfield)),
				onComplete: this.searchComplete.bind(this)
		});
		this.lastsearch = $F(this.searchfield);
	},

	resetLivesearch: function() {
		Effect.Fade(this.resetitem, { duration: .7 });
		Effect.Fade(this.contentitem, {duration: .5});
		this.lastsearch = '';
		$(this.searchfield).value = this.searchtext;
	}
}

FastInit.addOnLoad( function() { new Livesearch('searchform', 'http://weblog.ib.hu-berlin.de/wp-content/themes/unnamed-one-021beta/livesearch.php', 'searchquery=', 'Type and Wait to Search'); } );