// script.aculo.us slider.js v1.8.1, Thu Jan 03 22:07:12 -0500 2008

// Copyright (c) 2005-2007 Marty Haught, Thomas Fuchs 
//
// script.aculo.us is freely distributable under the terms of an MIT-style license.
// For details, see the script.aculo.us web site: http://script.aculo.us/

if (!Control) var Control = { };

// options:
//  axis: 'vertical', or 'horizontal' (default)
//
// callbacks:
//  onChange(value)
//  onSlide(value)
Control.Slider = Class.create({
  initialize: function(handle, track, options) {
    var slider = this;
    
    if (Object.isArray(handle)) {
      this.handles = handle.collect( function(e) { return $(e) });
    } else {
      this.handles = [$(handle)];
    }
    
    this.track   = $(track);
    this.options = options || { };

    this.axis      = this.options.axis || 'horizontal';
    this.increment = this.options.increment || 1;
    this.step      = parseInt(this.options.step || '1');
    this.range     = this.options.range || $R(0,1);
    
    this.value     = 0; // assure backwards compat
    this.values    = this.handles.map( function() { return 0 });
    this.spans     = this.options.spans ? this.options.spans.map(function(s){ return $(s) }) : false;
    this.options.startSpan = $(this.options.startSpan || null);
    this.options.endSpan   = $(this.options.endSpan || null);

    this.restricted = this.options.restricted || false;

    this.maximum   = this.options.maximum || this.range.end;
    this.minimum   = this.options.minimum || this.range.start;

    // Will be used to align the handle onto the track, if necessary
    this.alignX = parseInt(this.options.alignX || '0');
    this.alignY = parseInt(this.options.alignY || '0');
    
    this.trackLength = this.maximumOffset() - this.minimumOffset();

    this.handleLength = this.isVertical() ? 
      (this.handles[0].offsetHeight != 0 ? 
        this.handles[0].offsetHeight : this.handles[0].style.height.replace(/px$/,"")) : 
      (this.handles[0].offsetWidth != 0 ? this.handles[0].offsetWidth : 
        this.handles[0].style.width.replace(/px$/,""));

    this.active   = false;
    this.dragging = false;
    this.disabled = false;

    if (this.options.disabled) this.setDisabled();

    // Allowed values array
    this.allowedValues = this.options.values ? this.options.values.sortBy(Prototype.K) : false;
    if (this.allowedValues) {
      this.minimum = this.allowedValues.min();
      this.maximum = this.allowedValues.max();
    }

    this.eventMouseDown = this.startDrag.bindAsEventListener(this);
    this.eventMouseUp   = this.endDrag.bindAsEventListener(this);
    this.eventMouseMove = this.update.bindAsEventListener(this);

    // Initialize handles in reverse (make sure first handle is active)
    this.handles.each( function(h,i) {
      i = slider.handles.length-1-i;
      slider.setValue(parseFloat(
        (Object.isArray(slider.options.sliderValue) ? 
          slider.options.sliderValue[i] : slider.options.sliderValue) || 
         slider.range.start), i);
      h.makePositioned().observe("mousedown", slider.eventMouseDown);
    });
    
    this.track.observe("mousedown", this.eventMouseDown);
    document.observe("mouseup", this.eventMouseUp);
    document.observe("mousemove", this.eventMouseMove);
    
    this.initialized = true;
  },
  dispose: function() {
    var slider = this;    
    Event.stopObserving(this.track, "mousedown", this.eventMouseDown);
    Event.stopObserving(document, "mouseup", this.eventMouseUp);
    Event.stopObserving(document, "mousemove", this.eventMouseMove);
    this.handles.each( function(h) {
      Event.stopObserving(h, "mousedown", slider.eventMouseDown);
    });
  },
  setDisabled: function(){
    this.disabled = true;
  },
  setEnabled: function(){
    this.disabled = false;
  },  
  getNearestValue: function(value){
    if (this.allowedValues){
      if (value >= this.allowedValues.max()) return(this.allowedValues.max());
      if (value <= this.allowedValues.min()) return(this.allowedValues.min());
      
      var offset = Math.abs(this.allowedValues[0] - value);
      var newValue = this.allowedValues[0];
      this.allowedValues.each( function(v) {
        var currentOffset = Math.abs(v - value);
        if (currentOffset <= offset){
          newValue = v;
          offset = currentOffset;
        } 
      });
      return newValue;
    }
    if (value > this.range.end) return this.range.end;
    if (value < this.range.start) return this.range.start;
    return value;
  },
  setValue: function(sliderValue, handleIdx){
    if (!this.active) {
      this.activeHandleIdx = handleIdx || 0;
      this.activeHandle    = this.handles[this.activeHandleIdx];
      this.updateStyles();
    }
    handleIdx = handleIdx || this.activeHandleIdx || 0;
    if (this.initialized && this.restricted) {
      if ((handleIdx>0) && (sliderValue<this.values[handleIdx-1]))
        sliderValue = this.values[handleIdx-1];
      if ((handleIdx < (this.handles.length-1)) && (sliderValue>this.values[handleIdx+1]))
        sliderValue = this.values[handleIdx+1];
    }
    sliderValue = this.getNearestValue(sliderValue);
    this.values[handleIdx] = sliderValue;
    this.value = this.values[0]; // assure backwards compat
    
    this.handles[handleIdx].style[this.isVertical() ? 'top' : 'left'] = 
      this.translateToPx(sliderValue);
    
    this.drawSpans();
    if (!this.dragging || !this.event) this.updateFinished();
  },
  setValueBy: function(delta, handleIdx) {
    this.setValue(this.values[handleIdx || this.activeHandleIdx || 0] + delta, 
      handleIdx || this.activeHandleIdx || 0);
  },
  translateToPx: function(value) {
    return Math.round(
      ((this.trackLength-this.handleLength)/(this.range.end-this.range.start)) * 
      (value - this.range.start)) + "px";
  },
  translateToValue: function(offset) {
    return ((offset/(this.trackLength-this.handleLength) * 
      (this.range.end-this.range.start)) + this.range.start);
  },
  getRange: function(range) {
    var v = this.values.sortBy(Prototype.K); 
    range = range || 0;
    return $R(v[range],v[range+1]);
  },
  minimumOffset: function(){
    return(this.isVertical() ? this.alignY : this.alignX);
  },
  maximumOffset: function(){
    return(this.isVertical() ? 
      (this.track.offsetHeight != 0 ? this.track.offsetHeight :
        this.track.style.height.replace(/px$/,"")) - this.alignY : 
      (this.track.offsetWidth != 0 ? this.track.offsetWidth : 
        this.track.style.width.replace(/px$/,"")) - this.alignX);
  },  
  isVertical:  function(){
    return (this.axis == 'vertical');
  },
  drawSpans: function() {
    var slider = this;
    if (this.spans)
      $R(0, this.spans.length-1).each(function(r) { slider.setSpan(slider.spans[r], slider.getRange(r)) });
    if (this.options.startSpan)
      this.setSpan(this.options.startSpan,
        $R(0, this.values.length>1 ? this.getRange(0).min() : this.value ));
    if (this.options.endSpan)
      this.setSpan(this.options.endSpan, 
        $R(this.values.length>1 ? this.getRange(this.spans.length-1).max() : this.value, this.maximum));
  },
  setSpan: function(span, range) {
    if (this.isVertical()) {
      span.style.top = this.translateToPx(range.start);
      span.style.height = this.translateToPx(range.end - range.start + this.range.start);
    } else {
      span.style.left = this.translateToPx(range.start);
      span.style.width = this.translateToPx(range.end - range.start + this.range.start);
    }
  },
  updateStyles: function() {
    this.handles.each( function(h){ Element.removeClassName(h, 'selected') });
    Element.addClassName(this.activeHandle, 'selected');
  },
  startDrag: function(event) {
    if (Event.isLeftClick(event)) {
      if (!this.disabled){
        this.active = true;
        
        var handle = Event.element(event);
        var pointer  = [Event.pointerX(event), Event.pointerY(event)];
        var track = handle;
        if (track==this.track) {
          var offsets  = Position.cumulativeOffset(this.track); 
          this.event = event;
          this.setValue(this.translateToValue( 
           (this.isVertical() ? pointer[1]-offsets[1] : pointer[0]-offsets[0])-(this.handleLength/2)
          ));
          var offsets  = Position.cumulativeOffset(this.activeHandle);
          this.offsetX = (pointer[0] - offsets[0]);
          this.offsetY = (pointer[1] - offsets[1]);
        } else {
          // find the handle (prevents issues with Safari)
          while((this.handles.indexOf(handle) == -1) && handle.parentNode) 
            handle = handle.parentNode;
            
          if (this.handles.indexOf(handle)!=-1) {
            this.activeHandle    = handle;
            this.activeHandleIdx = this.handles.indexOf(this.activeHandle);
            this.updateStyles();
            
            var offsets  = Position.cumulativeOffset(this.activeHandle);
            this.offsetX = (pointer[0] - offsets[0]);
            this.offsetY = (pointer[1] - offsets[1]);
          }
        }
      }
      Event.stop(event);
    }
  },
  update: function(event) {
   if (this.active) {
      if (!this.dragging) this.dragging = true;
      this.draw(event);
      if (Prototype.Browser.WebKit) window.scrollBy(0,0);
      Event.stop(event);
   }
  },
  draw: function(event) {
    var pointer = [Event.pointerX(event), Event.pointerY(event)];
    var offsets = Position.cumulativeOffset(this.track);
    pointer[0] -= this.offsetX + offsets[0];
    pointer[1] -= this.offsetY + offsets[1];
    this.event = event;
    this.setValue(this.translateToValue( this.isVertical() ? pointer[1] : pointer[0] ));
    if (this.initialized && this.options.onSlide)
      this.options.onSlide(this.values.length>1 ? this.values : this.value, this);
  },
  endDrag: function(event) {
    if (this.active && this.dragging) {
      this.finishDrag(event, true);
      Event.stop(event);
    }
    this.active = false;
    this.dragging = false;
  },  
  finishDrag: function(event, success) {
    this.active = false;
    this.dragging = false;
    this.updateFinished();
  },
  updateFinished: function() {
    if (this.initialized && this.options.onChange) 
      this.options.onChange(this.values.length>1 ? this.values : this.value, this);
    this.event = null;
  }
});
/*  Control.Scroller, version 1.1
 *  Copyright (c) 2008, Glenn Nilsson <glenn.nilsson@gmail.com>
 *
 *  Control.Scroller is distributed under the terms of an Creative Commons
 *  Attribution license. In short words, you can use this however you like
 *  as long as you give me and the code credit. Read more at:
 *  <http://creativecommons.org/licenses/by/2.5/>
 *
 *  Requirements: Prototype framework <http://prototype.conio.net/> and
 *  slider.js from <http://wiki.script.aculo.us/scriptaculous/show/Slider>
 *
 *  For details, see: <http://wailqill.com/projects/scroller/>
 *
/*--------------------------------------------------------------------------*/
Control.Scroller = Class.create();
Control.Scroller.scrollers = [];
Control.Scroller.prototype = {
	initialize: function(content, handle, track, options) {
		this.id = "scroller"
		this.content = $(content);
		this.handle = $(handle);
		this.track = $(track);
		
		this.currentValue = 0;

		/* Slider-options */
		this.options = Object.extend({
			axis: 'vertical',
			onChange: function(value)  {
				self.updateView(value);
			},
			onSlide: function(value)  {
				self.updateView(value);
			}
		}, options);
		var self = this;
		/* Scroller-options */
		this.options = Object.extend({
			scrollOnHover: false,
			visibleHeight: this.isVertical() ? 220 : this.content.offsetHeight,
			visibleWidth: this.isVertical() ? this.content.offsetWidth : 200,
			delta: 20,
			autoHide: true,
			interval: 100
		}, this.options);
		
		this.maxValue = this.isVertical() ?
				this.content.offsetHeight - this.options.visibleHeight - this.handle.offsetHeight :
				this.content.offsetWidth - this.options.visibleWidth - this.handle.offsetWidth;
		this.options.range = $R(0, this.maxValue);

		this.buttons = {
			up: $(this.options.up),
			down: $(this.options.down)
		};

    // Ensure that the scroller is needed.
    //var children = $A(this.content.childNodes);
		//var wrapper = this.content.insert({top:new Element("div", { "class": "scroller-content-wrapper" })});
		//children.each(function(child) {
		//  wrapper.insert(child);
		//});
    if ((this.isVertical() && this.content.offsetHeight <= this.options.visibleHeight) || (!this.isVertical() && this.content.offsetWidth <= this.options.visibleWidth)) {
		  if (this.options.autoHide)
		    [this.track, this.handle, this.buttons.up, this.buttons.down].invoke("hide");
		  return;
		}
		
		this.content.style.height = this.options.visibleHeight+"px";
		
		this.eventMouseAction = this.buttonAction.bindAsEventListener(this);
   		$H(this.buttons).values().each(function(button) {
			if (self.options.scrollOnHover) {
				Event.observe(button, "mouseover", self.eventMouseAction);
				Event.observe(button, "mouseout", self.eventMouseAction);
			} else {
				Event.observe(button, "mousedown", self.eventMouseAction);
				Event.observe(button, "mouseup", self.eventMouseAction);
			}
		});
		this.slider = new Control.Slider(this.handle, this.track, this.options);
	},
	isVertical: function() {
		return this.options.axis == 'vertical';
	},
	buttonAction: function(e) {
		this.multiplier = Event.element(e) == this.buttons.up ? -1 : 1;
		switch (e.type) {
			case "mouseover":
			case "mousedown":
				this.scroll();
				var self = this;
				this.timer = setInterval(function() { self.scroll() }, self.options.interval);
				break;
			case "mouseout":
			case "mouseup":
				clearTimeout(this.timer)
				break;
		}
	},
	scroll: function() {
		this.slider.setValue(this.currentValue + this.options.delta * this.multiplier, 0);
	},
	updateView: function(value) {
		this.currentValue = value;
		if (this.options.axis == "vertical") {
			this.content.style.marginTop = (-this.currentValue) + "px";
			this.content.style.height = (this.options.visibleHeight+this.currentValue)+"px";
			this.content.style.clip = 'rect('+value+'px '+this.options.visibleWidth+'px '+(this.options.visibleHeight+this.currentValue)+'px 0px)';
		} else {
			this.content.style.marginLeft = (-this.currentValue) + "px";
			this.content.style.clip = 'rect(0 '+(this.options.visibleHeight+this.currentValue)+'px '+this.options.visibleHeight+'px '+value+'px)';
		}
		(this.options.onScroll || Prototype.emptyFunction)(value, this);
	}
}
	// <![CDATA[
	$(document).observe("dom:loaded", function() {
		new Control.Scroller( 'content', 'handle', 'track', {
			up: "button-up",
			down: "button-down",
			onScroll: function(value, scroller) {
				document.title = value;
			}
		});
		new Control.Scroller( 'content2', 'handle2', 'track2', {
			up: "button-up2",
			down: "button-down2",
			onScroll: function(value, scroller) {
				document.title = value;
			}
		});
		
		
	});
	// ]]>