/*
 * Goweb Sitemanager 4 Framework
 * @author     I&D <dev@goweb.pt>, Pedro Pinto <ppinto@goweb.pt>
 * @copyright  2008 (c) Goweb (http://www.goweb.pt)
 */

function buttonUp(div) {
	window[div + 'slider'].setValue(window[div + 'slider'].value-0.1);
}

function buttonDown(div){
	window[div + 'slider'].setValue(window[div + 'slider'].value+0.1);
}

function buttonLeft(div) {
	window[div + 'slider'].setValue(window[div + 'slider'].value-0.1);
}

function buttonRight(div){
	window[div + 'slider'].setValue(window[div + 'slider'].value+0.1);
}

function createSliderVertical(div, reverse , width, height){
	is_ie = ( /msie/i.test(navigator.userAgent) && !/opera/i.test(navigator.userAgent) );
	if (reverse != 1) reverse = 0;
	if (!$(div + '_scrollable')){
		alert('É necessário criar a div "' + div + '_scrollable" para que as coisas funcionem correctamente!');
		return false;
	}
	if (!$(div + '_handle')){
		alert('É necessário criar a div "' + div + '_handle" para que as coisas funcionem correctamente!');
		return false;
	}
	if (!$(div + '_track')){
		alert('É necessário criar a div "' + div + '_track" para que as coisas funcionem correctamente!');
		return false;
	}

	if (reverse == 1){
		window[div + 'slider'] = new Control.Slider(div + '_handle', div + '_track', {
			sliderValue: 1,
			axis: 'vertical',
			onSlide: function(v) { scrollVertical(v, $(div + '_scrollable'), window[div + 'slider'], reverse);  },
			onChange: function(v) { scrollVertical(v, $(div + '_scrollable'), window[div + 'slider'], reverse); }
		});
	} else {
		window[div + 'slider'] = new Control.Slider(div + '_handle', div + '_track', {
			axis: 'vertical',
			onSlide: function(v) { scrollVertical(v, $(div + '_scrollable'), window[div + 'slider'], reverse);  },
			onChange: function(v) { scrollVertical(v, $(div + '_scrollable'), window[div + 'slider'], reverse); }
		});
	}

	function scrollVertical(value, element, slider, rev) {
		element.scrollTop = Math.round(value/slider.maximum*(element.scrollHeight-element.offsetHeight));
	}

	function handle(delta) {
		window[div + 'slider'].setValueBy(-delta);
	}
	
	/*
	if (!height) height = "20px";
	if (!width) width = "100px";

	if ($(div + '_scrollable').style.overflow != "hidden"){
		$(div + '_scrollable').style.overflow = "hidden";
		if (is_ie) $(div + '_scrollable').style.position = "relative";
	}

	if (!$(div + '_scrollable').style.width){
		$(div + '_scrollable').style.width = width;
	}

	if (!$(div + '_scrollable').style.height){
		$(div + '_scrollable').style.height = height;
	}
	*/
	
	if ($(div + '_scrollable').style.overflow != "hidden"){
		if (is_ie) $(div + '_scrollable').style.position = "relative";
	}

	if ($(div + '_buttonDown')){
		$(div + '_buttonDown').onmouseover = new Function('Timer = setInterval(\'buttonDown("' + div + '")\', 100);');
		$(div + '_buttonDown').onmouseout = new Function('clearInterval(Timer)');
	}

	if ($(div + '_buttonUp')){
		$(div + '_buttonUp').onmouseover = new Function('Timer = setInterval(\'buttonUp("' + div + '")\', 100);');
		$(div + '_buttonUp').onmouseout = new Function('clearInterval(Timer)');
	}

	if ($(div + '_scrollable').scrollHeight <= $(div + '_scrollable').offsetHeight) {
		window[div + 'slider'].setDisabled();
		$(div + '_track').hide();
	}
	//if (reverse == 1) $(div + '_scrollable').scrollTop = $(div + '_scrollable').scrollHeigh-$(div + '_scrollable').offsetHeight;
	//if (reverse == 1) window[div + 'slider'].setValue(1);


	function wheel(event){
		var delta = 0;
		if (!event) /* For IE. */
			event = window.event;
		if (event.wheelDelta) { /* IE/Opera. */
			delta = event.wheelDelta/120;
		} else if (event.detail) { /** Mozilla case. */
			delta = -event.detail/3;
		}
		if (delta)
			handle(delta);
		if (event.preventDefault)
			event.preventDefault();
		event.returnValue = false;
	}
	Event.observe(div + '_scrollable', 'DOMMouseScroll', wheel);
	Event.observe(div + '_scrollable', 'mousewheel', wheel);
}

function createSliderHorizontal(div,reverse , width, height){
	this.currentValue = 1;
	is_ie = ( /msie/i.test(navigator.userAgent) && !/opera/i.test(navigator.userAgent) );
	if (reverse != 1) reverse = 0;
	if (!$(div + '_scrollable')){
		alert('É necessário criar a div "' + div + '_scrollable" para que as coisas funcionem correctamente!');
		return false;
	}
	if (!$(div + '_handle')){
		alert('É necessário criar a div "' + div + '_handle" para que as coisas funcionem correctamente!');
		return false;
	}
	if (!$(div + '_track')){
		alert('É necessário criar a div "' + div + '_track" para que as coisas funcionem correctamente!');
		return false;
	}

	window[div + 'slider'] = new Control.Slider(div + '_handle', div + '_track', {
		onSlide: function(v) { scrollHorizontal(v, $(div + '_scrollable'), window[div + 'slider']);  },
		onChange: function(v) { scrollHorizontal(v, $(div + '_scrollable'), window[div + 'slider']); }
	});

	function scrollHorizontal(value, element, slider) {
		this.currentValue = value;
		element.scrollLeft = Math.round(value/slider.maximum*(element.scrollWidth-element.offsetWidth));
	}
	
	/*if (!height) height = "20px";

	if (!width) width = "100px";

	if ($(div + '_scrollable').style.overflow != "hidden"){
		$(div + '_scrollable').style.overflow = "hidden";
		if (is_ie) $(div + '_scrollable').style.position = "relative";
	}

	if (!$(div + '_scrollable').style.width){
		$(div + '_scrollable').style.width = width;
	}

	if (!$(div + '_scrollable').style.height){
		$(div + '_scrollable').style.height = height;
	}

	if ($(div + '_scrollable').style.whiteSpace != 'nowrap'){
		$(div + '_scrollable').style.whiteSpace = 'nowrap';
	}*/
	
	if ($(div + '_scrollable').style.overflow != "hidden"){
		if (is_ie) $(div + '_scrollable').style.position = "relative";
	}
	
	if ($(div + '_buttonRight')){
		$(div + '_buttonRight').onmousedown = new Function('Timer = setInterval(\'buttonRight("' + div + '")\', 100);');
		$(div + '_buttonRight').onmouseup = new Function('clearInterval(Timer)');
	}

	if ($(div + '_buttonLeft')){
		$(div + '_buttonLeft').onmousedown = new Function('Timer = setInterval(\'buttonLeft("' + div + '")\', 20);');
		$(div + '_buttonLeft').onmouseup = new Function('clearInterval(Timer)');
	}

	if (reverse == 1) window[div + 'slider'].setValue(window[div + 'slider'].maximum);
}