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/* =========================================================

 * bootstrap-slider.js v2.0.0

 * http://www.eyecon.ro/bootstrap-slider

 * =========================================================

 * Copyright 2012 Stefan Petre

 *

 * Licensed under the Apache License, Version 2.0 (the "License");

 * you may not use this file except in compliance with the License.

 * You may obtain a copy of the License at

 *

 * http://www.apache.org/licenses/LICENSE-2.0

 *

 * Unless required by applicable law or agreed to in writing, software

 * distributed under the License is distributed on an "AS IS" BASIS,

 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.

 * See the License for the specific language governing permissions and

 * limitations under the License.

 * ========================================================= */

!function( $ ) {

  var Slider = function(element, options) {

    this.element = $(element);

    this.picker = $('<div class="slider">'+

              '<div class="slider-track">'+

                '<div class="slider-selection"></div>'+

                '<div class="slider-handle"></div>'+

                '<div class="slider-handle"></div>'+

              '</div>'+

              '<div class="tooltip"><div class="tooltip-arrow"></div><div class="tooltip-inner"></div></div>'+

            '</div>')

              .insertBefore(this.element)

              .append(this.element);

    this.id = this.element.data('slider-id')||options.id;

    if (this.id) {

      this.picker[0].id = this.id;

    }

    if (typeof Modernizr !== 'undefined' && Modernizr.touch) {

      this.touchCapable = true;

    }

    var tooltip = this.element.data('slider-tooltip')||options.tooltip;

    this.tooltip = this.picker.find('.tooltip');

    this.tooltipInner = this.tooltip.find('div.tooltip-inner');

    this.orientation = this.element.data('slider-orientation')||options.orientation;

    switch(this.orientation) {

      case 'vertical':

        this.picker.addClass('slider-vertical');

        this.stylePos = 'top';

        this.mousePos = 'pageY';

        this.sizePos = 'offsetHeight';

        this.tooltip.addClass('right')[0].style.left = '100%';

        break;

      default:

        this.picker

          .addClass('slider-horizontal')

          .css('width', this.element.outerWidth());

        this.orientation = 'horizontal';

        this.stylePos = 'left';

        this.mousePos = 'pageX';

        this.sizePos = 'offsetWidth';

        this.tooltip.addClass('top')[0].style.top = -this.tooltip.outerHeight() - 14 + 'px';

        break;

    }

    this.min = this.element.data('slider-min')||options.min;

    this.max = this.element.data('slider-max')||options.max;

    this.step = this.element.data('slider-step')||options.step;

    this.value = this.element.data('slider-value')||options.value;

    if (this.value[1]) {

      this.range = true;

    }

    this.selection = this.element.data('slider-selection')||options.selection;

    this.selectionEl = this.picker.find('.slider-selection');

    if (this.selection === 'none') {

      this.selectionEl.addClass('hide');

    }

    this.selectionElStyle = this.selectionEl[0].style;

    this.handle1 = this.picker.find('.slider-handle:first');

    this.handle1Stype = this.handle1[0].style;

    this.handle2 = this.picker.find('.slider-handle:last');

    this.handle2Stype = this.handle2[0].style;

    var handle = this.element.data('slider-handle')||options.handle;

    switch(handle) {

      case 'round':

        this.handle1.addClass('round');

        this.handle2.addClass('round');

        break

      case 'triangle':

        this.handle1.addClass('triangle');

        this.handle2.addClass('triangle');

        break

    }

    if (this.range) {

      this.value[0] = Math.max(this.min, Math.min(this.max, this.value[0]));

      this.value[1] = Math.max(this.min, Math.min(this.max, this.value[1]));

    } else {

      this.value = [ Math.max(this.min, Math.min(this.max, this.value))];

      this.handle2.addClass('hide');

      if (this.selection == 'after') {

        this.value[1] = this.max;

      } else {

        this.value[1] = this.min;

      }

    }

    this.diff = this.max - this.min;

    this.percentage = [

      (this.value[0]-this.min)*100/this.diff,

      (this.value[1]-this.min)*100/this.diff,

      this.step*100/this.diff

    ];

    this.offset = this.picker.offset();

    this.size = this.picker[0][this.sizePos];

    this.formater = options.formater;

    this.layout();

    if (this.touchCapable) {

      // Touch: Bind touch events:

      this.picker.on({

        touchstart: $.proxy(this.mousedown, this)

      });

    } else {

      this.picker.on({

        mousedown: $.proxy(this.mousedown, this)

      });

    }

    if (tooltip === 'show') {

      this.picker.on({

        mouseenter: $.proxy(this.showTooltip, this),

        mouseleave: $.proxy(this.hideTooltip, this)

      });

    } else {

      this.tooltip.addClass('hide');

    }

  };

  Slider.prototype = {

    constructor: Slider,

    over: false,

    inDrag: false,

    showTooltip: function(){

      this.tooltip.addClass('in');

      //var left = Math.round(this.percent*this.width);

      //this.tooltip.css('left', left - this.tooltip.outerWidth()/2);

      this.over = true;

    },

    hideTooltip: function(){

      if (this.inDrag === false) {

        this.tooltip.removeClass('in');

      }

      this.over = false;

    },

    layout: function(){

      this.handle1Stype[this.stylePos] = this.percentage[0]+'%';

      this.handle2Stype[this.stylePos] = this.percentage[1]+'%';

      if (this.orientation == 'vertical') {

        this.selectionElStyle.top = Math.min(this.percentage[0], this.percentage[1]) +'%';

        this.selectionElStyle.height = Math.abs(this.percentage[0] - this.percentage[1]) +'%';

      } else {

        this.selectionElStyle.left = Math.min(this.percentage[0], this.percentage[1]) +'%';

        this.selectionElStyle.width = Math.abs(this.percentage[0] - this.percentage[1]) +'%';

      }

      if (this.range) {

        this.tooltipInner.text(

          this.formater(this.value[0]) +

          ' : ' +

          this.formater(this.value[1])

        );

        this.tooltip[0].style[this.stylePos] = this.size * (this.percentage[0] + (this.percentage[1] - this.percentage[0])/2)/100 - (this.orientation === 'vertical' ? this.tooltip.outerHeight()/2 : this.tooltip.outerWidth()/2) +'px';

      } else {

        this.tooltipInner.text(

          this.formater(this.value[0])

        );

        this.tooltip[0].style[this.stylePos] = this.size * this.percentage[0]/100 - (this.orientation === 'vertical' ? this.tooltip.outerHeight()/2 : this.tooltip.outerWidth()/2) +'px';

      }

    },

    mousedown: function(ev) {

      // Touch: Get the original event:

      if (this.touchCapable && ev.type === 'touchstart') {

        ev = ev.originalEvent;

      }

      this.offset = this.picker.offset();

      this.size = this.picker[0][this.sizePos];

      var percentage = this.getPercentage(ev);

      if (this.range) {

        var diff1 = Math.abs(this.percentage[0] - percentage);

        var diff2 = Math.abs(this.percentage[1] - percentage);

        this.dragged = (diff1 < diff2) ? 0 : 1;

      } else {

        this.dragged = 0;

      }

      this.percentage[this.dragged] = percentage;

      this.layout();

      if (this.touchCapable) {

        // Touch: Bind touch events:

        $(document).on({

          touchmove: $.proxy(this.mousemove, this),

          touchend: $.proxy(this.mouseup, this)

        });

      } else {

        $(document).on({

          mousemove: $.proxy(this.mousemove, this),

          mouseup: $.proxy(this.mouseup, this)

        });

      }

      this.inDrag = true;

      var val = this.calculateValue();

      this.element.trigger({

          type: 'slideStart',

          value: val

        }).trigger({

          type: 'slide',

          value: val

        });

      return false;

    },

    mousemove: function(ev) {

      // Touch: Get the original event:

      if (this.touchCapable && ev.type === 'touchmove') {

        ev = ev.originalEvent;

      }

      var percentage = this.getPercentage(ev);

      if (this.range) {

        if (this.dragged === 0 && this.percentage[1] < percentage) {

          this.percentage[0] = this.percentage[1];

          this.dragged = 1;

        } else if (this.dragged === 1 && this.percentage[0] > percentage) {

          this.percentage[1] = this.percentage[0];

          this.dragged = 0;

        }

      }

      this.percentage[this.dragged] = percentage;

      this.layout();

      var val = this.calculateValue();

      this.element

        .trigger({

          type: 'slide',

          value: val

        })

        .data('value', val)

        .prop('value', val);

      return false;

    },

    mouseup: function(ev) {

      if (this.touchCapable) {

        // Touch: Bind touch events:

        $(document).off({

          touchmove: this.mousemove,

          touchend: this.mouseup

        });

      } else {

        $(document).off({

          mousemove: this.mousemove,

          mouseup: this.mouseup

        });

      }

      this.inDrag = false;

      if (this.over == false) {

        this.hideTooltip();

      }

      this.element;

      var val = this.calculateValue();

      this.element

        .trigger({

          type: 'slideStop',

          value: val

        })

        .data('value', val)

        .prop('value', val);

      return false;

    },

    calculateValue: function() {

      var val;

      if (this.range) {

        val = [

          (this.min + Math.round((this.diff * this.percentage[0]/100)/this.step)*this.step),

          (this.min + Math.round((this.diff * this.percentage[1]/100)/this.step)*this.step)

        ];

        this.value = val;

      } else {

        val = (this.min + Math.round((this.diff * this.percentage[0]/100)/this.step)*this.step);

        this.value = [val, this.value[1]];

      }

      return val;

    },

    getPercentage: function(ev) {

      if (this.touchCapable) {

        ev = ev.touches[0];

      }

      var percentage = (ev[this.mousePos] - this.offset[this.stylePos])*100/this.size;

      percentage = Math.round(percentage/this.percentage[2])*this.percentage[2];

      return Math.max(0, Math.min(100, percentage));

    },

    getValue: function() {

      if (this.range) {

        return this.value;

      }

      return this.value[0];

    },

    setValue: function(val) {

      this.value = val;

      if (this.range) {

        this.value[0] = Math.max(this.min, Math.min(this.max, this.value[0]));

        this.value[1] = Math.max(this.min, Math.min(this.max, this.value[1]));

      } else {

        this.value = [ Math.max(this.min, Math.min(this.max, this.value))];

        this.handle2.addClass('hide');

        if (this.selection == 'after') {

          this.value[1] = this.max;

        } else {

          this.value[1] = this.min;

        }

      }

      this.diff = this.max - this.min;

      this.percentage = [

        (this.value[0]-this.min)*100/this.diff,

        (this.value[1]-this.min)*100/this.diff,

        this.step*100/this.diff

      ];

      this.layout();

    }

  };

  $.fn.slider = function ( option, val ) {

    return this.each(function () {

      var $this = $(this),

        data = $this.data('slider'),

        options = typeof option === 'object' && option;

      if (!data)  {

        $this.data('slider', (data = new Slider(this, $.extend({}, $.fn.slider.defaults,options))));

      }

      if (typeof option == 'string') {

        data[option](val);

      }

    })

  };

  $.fn.slider.defaults = {

    min: 0,

    max: 10,

    step: 1,

    orientation: 'horizontal',

    value: 5,

    selection: 'before',

    tooltip: 'show',

    handle: 'round',

    formater: function(value) {

      return value;

    }

  };

  $.fn.slider.Constructor = Slider;

}( window.jQuery );