//MooTools More, <http://mootools.net/more>. Copyright (c) 2006-2008 Valerio Proietti, <http://mad4milk.net>, MIT Style License.

/*
Script: Fx.Scroll.js
	Effect to smoothly scroll any element, including the window.

License:
	MIT-style license.
*/

Fx.Scroll = new Class({

	Extends: Fx,

	options: {
		offset: {'x': 0, 'y': 0},
		wheelStops: true
	},

	initialize: function(element, options){
		this.element = this.subject = $(element);
		this.parent(options);
		var cancel = this.cancel.bind(this, false);

		if ($type(this.element) != 'element') this.element = $(this.element.getDocument().body);

		var stopper = this.element;

		if (this.options.wheelStops){
			this.addEvent('start', function(){
				stopper.addEvent('mousewheel', cancel);
			}, true);
			this.addEvent('complete', function(){
				stopper.removeEvent('mousewheel', cancel);
			}, true);
		}
	},

	set: function(){
		var now = Array.flatten(arguments);
		this.element.scrollTo(now[0], now[1]);
	},

	compute: function(from, to, delta){
		var now = [];
		var x = 2;
		x.times(function(i){
			now.push(Fx.compute(from[i], to[i], delta));
		});
		return now;
	},

	start: function(x, y){
		if (!this.check(arguments.callee, x, y)) return this;
		var offsetSize = this.element.getSize(), scrollSize = this.element.getScrollSize();
		var scroll = this.element.getScroll(), values = {x: x, y: y};
		for (var z in values){
			var max = scrollSize[z] - offsetSize[z];
			if ($chk(values[z])) values[z] = ($type(values[z]) == 'number') ? values[z].limit(0, max) : max;
			else values[z] = scroll[z];
			values[z] += this.options.offset[z];
		}
		return this.parent([scroll.x, scroll.y], [values.x, values.y]);
	},

	toTop: function(){
		return this.start(false, 0);
	},

	toLeft: function(){
		return this.start(0, false);
	},

	toRight: function(){
		return this.start('right', false);
	},

	toBottom: function(){
		return this.start(false, 'bottom');
	},

	toElement: function(el){
		var position = $(el).getPosition(this.element);
		return this.start(position.x, position.y);
	}

});


/*
Script: Fx.Elements.js
	Effect to change any number of CSS properties of any number of Elements.

License:
	MIT-style license.
*/

Fx.Elements = new Class({

	Extends: Fx.CSS,

	initialize: function(elements, options){
		this.elements = this.subject = $$(elements);
		this.parent(options);
	},

	compute: function(from, to, delta){
		var now = {};
		for (var i in from){
			var iFrom = from[i], iTo = to[i], iNow = now[i] = {};
			for (var p in iFrom) iNow[p] = this.parent(iFrom[p], iTo[p], delta);
		}
		return now;
	},

	set: function(now){
		for (var i in now){
			var iNow = now[i];
			for (var p in iNow) this.render(this.elements[i], p, iNow[p], this.options.unit);
		}
		return this;
	},

	start: function(obj){
		if (!this.check(arguments.callee, obj)) return this;
		var from = {}, to = {};
		for (var i in obj){
			var iProps = obj[i], iFrom = from[i] = {}, iTo = to[i] = {};
			for (var p in iProps){
				var parsed = this.prepare(this.elements[i], p, iProps[p]);
				iFrom[p] = parsed.from;
				iTo[p] = parsed.to;
			}
		}
		return this.parent(from, to);
	}

});

/*
Script: Drag.js
	The base Drag Class. Can be used to drag and resize Elements using mouse events.

License:
	MIT-style license.
*/

var Drag = new Class({

	Implements: [Events, Options],

	options: {/*
		onBeforeStart: $empty,
		onStart: $empty,
		onDrag: $empty,
		onCancel: $empty,
		onComplete: $empty,*/
		snap: 6,
		unit: 'px',
		grid: false,
		style: true,
		limit: false,
		handle: false,
		invert: false,
		preventDefault: false,
		modifiers: {x: 'left', y: 'top'}
	},

	initialize: function(){
		var params = Array.link(arguments, {'options': Object.type, 'element': $defined});
		this.element = $(params.element);
		this.document = this.element.getDocument();
		this.setOptions(params.options || {});
		var htype = $type(this.options.handle);
		this.handles = (htype == 'array' || htype == 'collection') ? $$(this.options.handle) : $(this.options.handle) || this.element;
		this.mouse = {'now': {}, 'pos': {}};
		this.value = {'start': {}, 'now': {}};
		
		this.selection = (Browser.Engine.trident) ? 'selectstart' : 'mousedown';
		
		this.bound = {
			start: this.start.bind(this),
			check: this.check.bind(this),
			drag: this.drag.bind(this),
			stop: this.stop.bind(this),
			cancel: this.cancel.bind(this),
			eventStop: $lambda(false)
		};
		this.attach();
	},

	attach: function(){
		this.handles.addEvent('mousedown', this.bound.start);
		return this;
	},

	detach: function(){
		this.handles.removeEvent('mousedown', this.bound.start);
		return this;
	},

	start: function(event){
		if (this.options.preventDefault) event.preventDefault();
		this.fireEvent('beforeStart', this.element);
		this.mouse.start = event.page;
		var limit = this.options.limit;
		this.limit = {'x': [], 'y': []};
		for (var z in this.options.modifiers){
			if (!this.options.modifiers[z]) continue;
			if (this.options.style) this.value.now[z] = this.element.getStyle(this.options.modifiers[z]).toInt();
			else this.value.now[z] = this.element[this.options.modifiers[z]];
			if (this.options.invert) this.value.now[z] *= -1;
			this.mouse.pos[z] = event.page[z] - this.value.now[z];
			if (limit && limit[z]){
				for (var i = 2; i--; i){
					if ($chk(limit[z][i])) this.limit[z][i] = $lambda(limit[z][i])();
				}
			}
		}
		if ($type(this.options.grid) == 'number') this.options.grid = {'x': this.options.grid, 'y': this.options.grid};
		this.document.addEvents({mousemove: this.bound.check, mouseup: this.bound.cancel});
		this.document.addEvent(this.selection, this.bound.eventStop);
	},

	check: function(event){
		if (this.options.preventDefault) event.preventDefault();
		var distance = Math.round(Math.sqrt(Math.pow(event.page.x - this.mouse.start.x, 2) + Math.pow(event.page.y - this.mouse.start.y, 2)));
		if (distance > this.options.snap){
			this.cancel();
			this.document.addEvents({
				mousemove: this.bound.drag,
				mouseup: this.bound.stop
			});
			this.fireEvent('start', this.element).fireEvent('snap', this.element);
		}
	},

	drag: function(event){
		if (this.options.preventDefault) event.preventDefault();
		this.mouse.now = event.page;
		for (var z in this.options.modifiers){
			if (!this.options.modifiers[z]) continue;
			this.value.now[z] = this.mouse.now[z] - this.mouse.pos[z];
			if (this.options.invert) this.value.now[z] *= -1;
			if (this.options.limit && this.limit[z]){
				if ($chk(this.limit[z][1]) && (this.value.now[z] > this.limit[z][1])){
					this.value.now[z] = this.limit[z][1];
				} else if ($chk(this.limit[z][0]) && (this.value.now[z] < this.limit[z][0])){
					this.value.now[z] = this.limit[z][0];
				}
			}
			if (this.options.grid[z]) this.value.now[z] -= (this.value.now[z] % this.options.grid[z]);
			if (this.options.style) this.element.setStyle(this.options.modifiers[z], this.value.now[z] + this.options.unit);
			else this.element[this.options.modifiers[z]] = this.value.now[z];
		}
		this.fireEvent('drag', this.element);
	},

	cancel: function(event){
		this.document.removeEvent('mousemove', this.bound.check);
		this.document.removeEvent('mouseup', this.bound.cancel);
		if (event){
			this.document.removeEvent(this.selection, this.bound.eventStop);
			this.fireEvent('cancel', this.element);
		}
	},

	stop: function(event){
		this.document.removeEvent(this.selection, this.bound.eventStop);
		this.document.removeEvent('mousemove', this.bound.drag);
		this.document.removeEvent('mouseup', this.bound.stop);
		if (event) this.fireEvent('complete', this.element);
	}

});

Element.implement({
	
	makeResizable: function(options){
		return new Drag(this, $merge({modifiers: {'x': 'width', 'y': 'height'}}, options));
	}

});

/*
Script: Tips.js
	Class for creating nice tips that follow the mouse cursor when hovering an element.

License:
	MIT-style license.
*/

var Tips = new Class({

	Implements: [Events, Options],

	options: {
		onShow: function(tip){
			tip.setStyle('visibility', 'visible');
		},
		onHide: function(tip){
			tip.setStyle('visibility', 'hidden');
		},
		showDelay: 100,
		hideDelay: 100,
		className: null,
		offsets: {x: 16, y: 16},
		fixed: false
	},

	initialize: function(){
		var params = Array.link(arguments, {options: Object.type, elements: $defined});
		this.setOptions(params.options || null);
		
		this.tip = new Element('div').inject(document.body);
		
		if (this.options.className) this.tip.addClass(this.options.className);
		
		var top = new Element('div', {'class': 'tip-top'}).inject(this.tip);
		this.container = new Element('div', {'class': 'tip'}).inject(this.tip);
		var bottom = new Element('div', {'class': 'tip-bottom'}).inject(this.tip);

		this.tip.setStyles({position: 'absolute', top: 0, left: 0, visibility: 'hidden'});
		
		if (params.elements) this.attach(params.elements);
	},
	
	attach: function(elements){
		$$(elements).each(function(element){
			var title = element.retrieve('tip:title', element.get('title'));
			var text = element.retrieve('tip:text', element.get('rel') || element.get('href'));
			var enter = element.retrieve('tip:enter', this.elementEnter.bindWithEvent(this, element));
			var leave = element.retrieve('tip:leave', this.elementLeave.bindWithEvent(this, element));
			element.addEvents({mouseenter: enter, mouseleave: leave});
			if (!this.options.fixed){
				var move = element.retrieve('tip:move', this.elementMove.bindWithEvent(this, element));
				element.addEvent('mousemove', move);
			}
			element.store('tip:native', element.get('title'));
			element.erase('title');
		}, this);
		return this;
	},
	
	detach: function(elements){
		$$(elements).each(function(element){
			element.removeEvent('mouseenter', element.retrieve('tip:enter') || $empty);
			element.removeEvent('mouseleave', element.retrieve('tip:leave') || $empty);
			element.removeEvent('mousemove', element.retrieve('tip:move') || $empty);
			element.eliminate('tip:enter').eliminate('tip:leave').eliminate('tip:move');
			var original = element.retrieve('tip:native');
			if (original) element.set('title', original);
		});
		return this;
	},
	
	elementEnter: function(event, element){
		
		$A(this.container.childNodes).each(Element.dispose);
		
		var title = element.retrieve('tip:title');
		
		if (title){
			this.titleElement = new Element('div', {'class': 'tip-title'}).inject(this.container);
			this.fill(this.titleElement, title);
		}
		
		var text = element.retrieve('tip:text');
		if (text){
			this.textElement = new Element('div', {'class': 'tip-text'}).inject(this.container);
			this.fill(this.textElement, text);
		}
		
		this.timer = $clear(this.timer);
		this.timer = this.show.delay(this.options.showDelay, this);

		this.position((!this.options.fixed) ? event : {page: element.getPosition()});
	},
	
	elementLeave: function(event){
		$clear(this.timer);
		this.timer = this.hide.delay(this.options.hideDelay, this);
	},
	
	elementMove: function(event){
		this.position(event);
	},
	
	position: function(event){
		var size = window.getSize(), scroll = window.getScroll();
		var tip = {x: this.tip.offsetWidth, y: this.tip.offsetHeight};
		var props = {x: 'left', y: 'top'};
		for (var z in props){
			var pos = event.page[z] + this.options.offsets[z];
			if ((pos + tip[z] - scroll[z]) > size[z]) pos = event.page[z] - this.options.offsets[z] - tip[z];
			this.tip.setStyle(props[z], pos);
		}
	},
	
	fill: function(element, contents){
		(typeof contents == 'string') ? element.set('html', contents) : element.adopt(contents);
	},

	show: function(){
		this.fireEvent('show', this.tip);
	},

	hide: function(){
		this.fireEvent('hide', this.tip);
	}

});

/*
Script: SmoothScroll.js
	Class for creating a smooth scrolling effect to all internal links on the page.

License:
	MIT-style license.
*/

var SmoothScroll = new Class({

	Extends: Fx.Scroll,

	initialize: function(options, context){
		context = context || document;
		var doc = context.getDocument(), win = context.getWindow();
		this.parent(doc, options);
		this.links = (this.options.links) ? $$(this.options.links) : $$(doc.links);
		var location = win.location.href.match(/^[^#]*/)[0] + '#';
		this.links.each(function(link){
			if (link.href.indexOf(location) != 0) return;
			var anchor = link.href.substr(location.length);
			if (anchor && $(anchor)) this.useLink(link, anchor);
		}, this);
		if (!Browser.Engine.webkit419) this.addEvent('complete', function(){
			win.location.hash = this.anchor;
		}, true);
	},

	useLink: function(link, anchor){
		link.addEvent('click', function(event){
			this.anchor = anchor;
			this.toElement(anchor);
			event.stop();
		}.bind(this));
	}

});

/*
Script: Slider.js
	Class for creating horizontal and vertical slider controls.

License:
	MIT-style license.
*/

var Slider = new Class({

	Implements: [Events, Options],

	options: {/*
		onChange: $empty,
		onComplete: $empty,*/
		onTick: function(position){
			if(this.options.snap) position = this.toPosition(this.step);
			this.knob.setStyle(this.property, position);
		},
		snap: false,
		offset: 0,
		range: false,
		wheel: false,
		steps: 100,
		mode: 'horizontal'
	},

	initialize: function(element, knob, options){
		this.setOptions(options);
		this.element = $(element);
		this.knob = $(knob);
		this.previousChange = this.previousEnd = this.step = -1;
		this.element.addEvent('mousedown', this.clickedElement.bind(this));
		if (this.options.wheel) this.element.addEvent('mousewheel', this.scrolledElement.bindWithEvent(this));
		var offset, limit = {}, modifiers = {'x': false, 'y': false};
		switch (this.options.mode){
			case 'vertical':
				this.axis = 'y';
				this.property = 'top';
				offset = 'offsetHeight';
				break;
			case 'horizontal':
				this.axis = 'x';
				this.property = 'left';
				offset = 'offsetWidth';
		}
		this.half = this.knob[offset] / 2;
		this.full = this.element[offset] - this.knob[offset] + (this.options.offset * 2);
		this.min = $chk(this.options.range[0]) ? this.options.range[0] : 0;
		this.max = $chk(this.options.range[1]) ? this.options.range[1] : this.options.steps;
		this.range = this.max - this.min;
		this.steps = this.options.steps || this.full;
		this.stepSize = Math.abs(this.range) / this.steps;
		this.stepWidth = this.stepSize * this.full / Math.abs(this.range) ;
		
		this.knob.setStyle('position', 'relative').setStyle(this.property, - this.options.offset);
		modifiers[this.axis] = this.property;
		limit[this.axis] = [- this.options.offset, this.full - this.options.offset];
		this.drag = new Drag(this.knob, {
			snap: 0,
			limit: limit,
			modifiers: modifiers,
			onDrag: this.draggedKnob.bind(this),
			onStart: this.draggedKnob.bind(this),
			onComplete: function(){
				this.draggedKnob();
				this.end();
			}.bind(this)
		});
		if (this.options.snap) {
			this.drag.options.grid = Math.ceil(this.stepWidth);
			this.drag.options.limit[this.axis][1] = this.full;
		}
	},

	set: function(step){
		if (!((this.range > 0) ^ (step < this.min))) step = this.min;
		if (!((this.range > 0) ^ (step > this.max))) step = this.max;
		
		this.step = Math.round(step);
		this.checkStep();
		this.end();
		this.fireEvent('tick', this.toPosition(this.step));
		return this;
	},

	clickedElement: function(event){
		var dir = this.range < 0 ? -1 : 1;
		var position = event.page[this.axis] - this.element.getPosition()[this.axis] - this.half;
		position = position.limit(-this.options.offset, this.full -this.options.offset);
		
		this.step = Math.round(this.min + dir * this.toStep(position));
		this.checkStep();
		this.end();
		this.fireEvent('tick', position);
	},
	
	scrolledElement: function(event){
		var mode = (this.options.mode == 'horizontal') ? (event.wheel < 0) : (event.wheel > 0);
		this.set(mode ? this.step - this.stepSize : this.step + this.stepSize);
		event.stop();
	},

	draggedKnob: function(){
		var dir = this.range < 0 ? -1 : 1;
		var position = this.drag.value.now[this.axis];
		position = position.limit(-this.options.offset, this.full -this.options.offset);
		this.step = Math.round(this.min + dir * this.toStep(position));
		this.checkStep();
	},

	checkStep: function(){
		if (this.previousChange != this.step){
			this.previousChange = this.step;
			this.fireEvent('change', this.step);
		}
	},

	end: function(){
		if (this.previousEnd !== this.step){
			this.previousEnd = this.step;
			this.fireEvent('complete', this.step + '');
		}
	},

	toStep: function(position){
		var step = (position + this.options.offset) * this.stepSize / this.full * this.steps;
		return this.options.steps ? Math.round(step -= step % this.stepSize) : step;
	},

	toPosition: function(step){
		return (this.full * Math.abs(this.min - step)) / (this.steps * this.stepSize) - this.options.offset;
	}

});

/*
Script: Accordion.js
	An Fx.Elements extension which allows you to easily create accordion type controls.

License:
	MIT-style license.
*/

var Accordion = new Class({

	Extends: Fx.Elements,

	options: {/*
		onActive: $empty,
		onBackground: $empty,*/
		display: 0,
		show: false,
		height: true,
		width: false,
		opacity: true,
		fixedHeight: false,
		fixedWidth: false,
		wait: false,
		alwaysHide: false
	},

	initialize: function(){
		var params = Array.link(arguments, {'container': Element.type, 'options': Object.type, 'togglers': $defined, 'elements': $defined});
		this.parent(params.elements, params.options);
		this.togglers = $$(params.togglers);
		this.container = $(params.container);
		this.previous = -1;
		if (this.options.alwaysHide) this.options.wait = true;
		if ($chk(this.options.show)){
			this.options.display = false;
			this.previous = this.options.show;
		}
		if (this.options.start){
			this.options.display = false;
			this.options.show = false;
		}
		this.effects = {};
		if (this.options.opacity) this.effects.opacity = 'fullOpacity';
		if (this.options.width) this.effects.width = this.options.fixedWidth ? 'fullWidth' : 'offsetWidth';
		if (this.options.height) this.effects.height = this.options.fixedHeight ? 'fullHeight' : 'scrollHeight';
		for (var i = 0, l = this.togglers.length; i < l; i++) this.addSection(this.togglers[i], this.elements[i]);
		this.elements.each(function(el, i){
			if (this.options.show === i){
				this.fireEvent('active', [this.togglers[i], el]);
			} else {
				for (var fx in this.effects) el.setStyle(fx, 0);
			}
		}, this);
		if ($chk(this.options.display)) this.display(this.options.display);
	},

	addSection: function(toggler, element, pos){
		toggler = $(toggler);
		element = $(element);
		var test = this.togglers.contains(toggler);
		var len = this.togglers.length;
		this.togglers.include(toggler);
		this.elements.include(element);
		if (len && (!test || pos)){
			pos = $pick(pos, len - 1);
			toggler.inject(this.togglers[pos], 'before');
			element.inject(toggler, 'after');
		} else if (this.container && !test){
			toggler.inject(this.container);
			element.inject(this.container);
		}
		var idx = this.togglers.indexOf(toggler);
		toggler.addEvent('click', this.display.bind(this, idx));
		if (this.options.height) element.setStyles({'padding-top': 0, 'border-top': 'none', 'padding-bottom': 0, 'border-bottom': 'none'});
		if (this.options.width) element.setStyles({'padding-left': 0, 'border-left': 'none', 'padding-right': 0, 'border-right': 'none'});
		element.fullOpacity = 1;
		if (this.options.fixedWidth) element.fullWidth = this.options.fixedWidth;
		if (this.options.fixedHeight) element.fullHeight = this.options.fixedHeight;
		element.setStyle('overflow', 'hidden');
		if (!test){
			for (var fx in this.effects) element.setStyle(fx, 0);
		}
		return this;
	},

	display: function(index){
		index = ($type(index) == 'element') ? this.elements.indexOf(index) : index;
		if ((this.timer && this.options.wait) || (index === this.previous && !this.options.alwaysHide)) return this;
		this.previous = index;
		var obj = {};
		this.elements.each(function(el, i){
			obj[i] = {};
			var hide = (i != index) || (this.options.alwaysHide && (el.offsetHeight > 0));
			this.fireEvent(hide ? 'background' : 'active', [this.togglers[i], el]);
			for (var fx in this.effects) obj[i][fx] = hide ? 0 : el[this.effects[fx]];
		}, this);
		return this.start(obj);
	}

});