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

* 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.dragLocked = false;
            this.limit = 100000;
            this.element = $(element).hide();
            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.reversed = this.element.data('slider-reversed')||options.reversed;

            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(){
  var positionPercentages;

  if(this.reversed) {
    positionPercentages = [ this.percentage[1] - this.percentage[0], this.percentage[1] ];
  } else {
    positionPercentages = [ this.percentage[0], this.percentage[1] ];
  }

  this.handle1Stype[this.stylePos] = positionPercentages[0]+'%';
  this.handle2Stype[this.stylePos] = positionPercentages[1]+'%';
  if (this.orientation == 'vertical') {
    this.selectionElStyle.top = Math.min(positionPercentages[0], positionPercentages[1]) +'%';
    this.selectionElStyle.height = Math.abs(positionPercentages[0] - positionPercentages[1]) +'%';
  } else {
    this.selectionElStyle.left = Math.min(positionPercentages[0], positionPercentages[1]) +'%';
    this.selectionElStyle.width = Math.abs(positionPercentages[0] - positionPercentages[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 * (positionPercentages[0] + (positionPercentages[1] - positionPercentages[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 * positionPercentages[0]/100 - (this.orientation === 'vertical' ? this.tooltip.outerHeight()/2 : this.tooltip.outerWidth()/2) +'px';
  }
},

            mousedown: function(ev) {

                    if (!this.dragLocked){
                    // 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] = this.reversed ? this.percentage[1] - percentage : 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.setValue(val);
                    this.element.trigger({
                            type: 'slideStart',
                            value: val
                    }).trigger({
                            type: 'slide',
                            value: val
                    });
                    return false;
                    }
            },

            mousemove: function(ev) {
                    // Touch: Get the original event:
                    if (!this.dragLocked){
                            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;
                                    }
                            }
                            x = this.reversed ? this.percentage[1] - percentage : percentage;
                            if (x > this.limit) {
                                    return ;
                            }
                            this.percentage[this.dragged] = x;
                            this.layout();
                            var val = this.calculateValue();
                            this.setValue(val);

                            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.layout();
                    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];
            },
            setLimit: function(val) {
                    this.limit = val;
            },
            setDragLocked: function(val) {
                    this.dragLocked = val;
            },
            getDragLocked: function(val) {
                    return this.dragLocked;
            },
            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();
            },
            destroy: function(){
                    this.element.show().insertBefore(this.picker);
                    this.picker.remove();
            },
    };

    $.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',
            reversed : false,
            limit: 100000,
            dragLocked: false,
            formater: function(value) {
                    return value;
            }
    };

    $.fn.slider.Constructor = Slider;

}( window.jQuery );