/**

* Colorpicker component class
*
* @param {Object|String} element
* @param {Object} options
* @constructor
*/

var Colorpicker = function(element, options) {

this.element = $(element).addClass('colorpicker-element');
this.options = $.extend(true, {}, defaults, this.element.data(), options);
this.component = this.options.component;
this.component = (this.component !== false) ? this.element.find(this.component) : false;
if (this.component && (this.component.length === 0)) {
  this.component = false;
}
this.container = (this.options.container === true) ? this.element : this.options.container;
this.container = (this.container !== false) ? $(this.container) : false;

// Is the element an input? Should we search inside for any input?
this.input = this.element.is('input') ? this.element : (this.options.input ?
  this.element.find(this.options.input) : false);
if (this.input && (this.input.length === 0)) {
  this.input = false;
}
// Set HSB color
this.color = this.createColor(this.options.color !== false ? this.options.color : this.getValue());

this.format = this.options.format !== false ? this.options.format : this.color.origFormat;

if (this.options.color !== false) {
  this.updateInput(this.color);
  this.updateData(this.color);
}

// Setup picker
var $picker = this.picker = $(this.options.template);
if (this.options.customClass) {
  $picker.addClass(this.options.customClass);
}
if (this.options.inline) {
  $picker.addClass('colorpicker-inline colorpicker-visible');
} else {
  $picker.addClass('colorpicker-hidden');
}
if (this.options.horizontal) {
  $picker.addClass('colorpicker-horizontal');
}
if (
  (['rgba', 'hsla', 'alias'].indexOf(this.format) !== -1) ||
  this.options.format === false ||
  this.getValue() === 'transparent'
) {
  $picker.addClass('colorpicker-with-alpha');
}
if (this.options.align === 'right') {
  $picker.addClass('colorpicker-right');
}
if (this.options.inline === true) {
  $picker.addClass('colorpicker-no-arrow');
}
if (this.options.colorSelectors) {
  var colorpicker = this,
    selectorsContainer = colorpicker.picker.find('.colorpicker-selectors');

  if (selectorsContainer.length > 0) {
    $.each(this.options.colorSelectors, function(name, color) {
      var $btn = $('<i />')
        .addClass('colorpicker-selectors-color')
        .css('background-color', color)
        .data('class', name).data('alias', name);

      $btn.on('mousedown.colorpicker touchstart.colorpicker', function(event) {
        event.preventDefault();
        colorpicker.setValue(
          colorpicker.format === 'alias' ? $(this).data('alias') : $(this).css('background-color')
        );
      });
      selectorsContainer.append($btn);
    });
    selectorsContainer.show().addClass('colorpicker-visible');
  }
}

// Prevent closing the colorpicker when clicking on itself
$picker.on('mousedown.colorpicker touchstart.colorpicker', $.proxy(function(e) {
  if (e.target === e.currentTarget) {
    e.preventDefault();
  }
}, this));

// Bind click/tap events on the sliders
$picker.find('.colorpicker-saturation, .colorpicker-hue, .colorpicker-alpha')
  .on('mousedown.colorpicker touchstart.colorpicker', $.proxy(this.mousedown, this));

$picker.appendTo(this.container ? this.container : $('body'));

// Bind other events
if (this.input !== false) {
  this.input.on({
    'keyup.colorpicker': $.proxy(this.keyup, this)
  });
  this.input.on({
    'change.colorpicker': $.proxy(this.change, this)
  });
  if (this.component === false) {
    this.element.on({
      'focus.colorpicker': $.proxy(this.show, this)
    });
  }
  if (this.options.inline === false) {
    this.element.on({
      'focusout.colorpicker': $.proxy(this.hide, this)
    });
  }
}

if (this.component !== false) {
  this.component.on({
    'click.colorpicker': $.proxy(this.show, this)
  });
}

if ((this.input === false) && (this.component === false)) {
  this.element.on({
    'click.colorpicker': $.proxy(this.show, this)
  });
}

// for HTML5 input[type='color']
if ((this.input !== false) && (this.component !== false) && (this.input.attr('type') === 'color')) {

  this.input.on({
    'click.colorpicker': $.proxy(this.show, this),
    'focus.colorpicker': $.proxy(this.show, this)
  });
}
this.update();

$($.proxy(function() {
  this.element.trigger('create');
}, this));

};

Colorpicker.Color = Color;

Colorpicker.prototype = {

constructor: Colorpicker,
destroy: function() {
  this.picker.remove();
  this.element.removeData('colorpicker', 'color').off('.colorpicker');
  if (this.input !== false) {
    this.input.off('.colorpicker');
  }
  if (this.component !== false) {
    this.component.off('.colorpicker');
  }
  this.element.removeClass('colorpicker-element');
  this.element.trigger({
    type: 'destroy'
  });
},
reposition: function() {
  if (this.options.inline !== false || this.options.container) {
    return false;
  }
  var type = this.container && this.container[0] !== window.document.body ? 'position' : 'offset';
  var element = this.component || this.element;
  var offset = element[type]();
  if (this.options.align === 'right') {
    offset.left -= this.picker.outerWidth() - element.outerWidth();
  }
  this.picker.css({
    top: offset.top + element.outerHeight(),
    left: offset.left
  });
},
show: function(e) {
  if (this.isDisabled()) {
    // Don't show the widget if it's disabled (the input)
    return;
  }
  this.picker.addClass('colorpicker-visible').removeClass('colorpicker-hidden');
  this.reposition();
  $(window).on('resize.colorpicker', $.proxy(this.reposition, this));
  if (e && (!this.hasInput() || this.input.attr('type') === 'color')) {
    if (e.stopPropagation && e.preventDefault) {
      e.stopPropagation();
      e.preventDefault();
    }
  }
  if ((this.component || !this.input) && (this.options.inline === false)) {
    $(window.document).on({
      'mousedown.colorpicker': $.proxy(this.hide, this)
    });
  }
  this.element.trigger({
    type: 'showPicker',
    color: this.color
  });
},
hide: function(e) {
  if ((typeof e !== 'undefined') && e.target) {
    // Prevent hide if triggered by an event and an element inside the colorpicker has been clicked/touched
    if (
      $(e.currentTarget).parents('.colorpicker').length > 0 ||
      $(e.target).parents('.colorpicker').length > 0
    ) {
      return false;
    }
  }
  this.picker.addClass('colorpicker-hidden').removeClass('colorpicker-visible');
  $(window).off('resize.colorpicker', this.reposition);
  $(window.document).off({
    'mousedown.colorpicker': this.hide
  });
  this.update();
  this.element.trigger({
    type: 'hidePicker',
    color: this.color
  });
},
updateData: function(val) {
  val = val || this.color.toString(this.format, false);
  this.element.data('color', val);
  return val;
},
updateInput: function(val) {
  val = val || this.color.toString(this.format, false);
  if (this.input !== false) {
    this.input.prop('value', val);
    this.input.trigger('change');
  }
  return val;
},
updatePicker: function(val) {
  if (typeof val !== 'undefined') {
    this.color = this.createColor(val);
  }
  var sl = (this.options.horizontal === false) ? this.options.sliders : this.options.slidersHorz;
  var icns = this.picker.find('i');
  if (icns.length === 0) {
    return;
  }
  if (this.options.horizontal === false) {
    sl = this.options.sliders;
    icns.eq(1).css('top', sl.hue.maxTop * (1 - this.color.value.h)).end()
      .eq(2).css('top', sl.alpha.maxTop * (1 - this.color.value.a));
  } else {
    sl = this.options.slidersHorz;
    icns.eq(1).css('left', sl.hue.maxLeft * (1 - this.color.value.h)).end()
      .eq(2).css('left', sl.alpha.maxLeft * (1 - this.color.value.a));
  }
  icns.eq(0).css({
    'top': sl.saturation.maxTop - this.color.value.b * sl.saturation.maxTop,
    'left': this.color.value.s * sl.saturation.maxLeft
  });

  this.picker.find('.colorpicker-saturation')
    .css('backgroundColor', (this.options.hexNumberSignPrefix ? '' : '#') + this.color.toHex(this.color.value.h, 1, 1, 1));

  this.picker.find('.colorpicker-alpha')
    .css('backgroundColor', (this.options.hexNumberSignPrefix ? '' : '#') + this.color.toHex());

  this.picker.find('.colorpicker-color, .colorpicker-color div')
    .css('backgroundColor', this.color.toString(this.format, true));

  return val;
},
updateComponent: function(val) {
  var color;

  if (typeof val !== 'undefined') {
    color = this.createColor(val);
  } else {
    color = this.color;
  }

  if (this.component !== false) {
    var icn = this.component.find('i').eq(0);
    if (icn.length > 0) {
      icn.css({
        'backgroundColor': color.toString(this.format, true)
      });
    } else {
      this.component.css({
        'backgroundColor': color.toString(this.format, true)
      });
    }
  }

  return color.toString(this.format, false);
},
update: function(force) {
  var val;
  if ((this.getValue(false) !== false) || (force === true)) {
    // Update input/data only if the current value is not empty
    val = this.updateComponent();
    this.updateInput(val);
    this.updateData(val);
    this.updatePicker(); // only update picker if value is not empty
  }
  return val;

},
setValue: function(val) { // set color manually
  this.color = this.createColor(val);
  this.update(true);
  this.element.trigger({
    type: 'changeColor',
    color: this.color,
    value: val
  });
},
/**
 * Creates a new color using the instance options
 * @protected
 * @param {String} val
 * @returns {Color}
 */
createColor: function(val) {
  return new Color(
    val ? val : null,
    this.options.colorSelectors,
    this.options.fallbackColor ? this.options.fallbackColor : this.color,
    this.options.fallbackFormat,
    this.options.hexNumberSignPrefix
  );
},
getValue: function(defaultValue) {
  defaultValue = (typeof defaultValue === 'undefined') ? this.options.fallbackColor : defaultValue;
  var val;
  if (this.hasInput()) {
    val = this.input.val();
  } else {
    val = this.element.data('color');
  }
  if ((val === undefined) || (val === '') || (val === null)) {
    // if not defined or empty, return default
    val = defaultValue;
  }
  return val;
},
hasInput: function() {
  return (this.input !== false);
},
isDisabled: function() {
  if (this.hasInput()) {
    return (this.input.prop('disabled') === true);
  }
  return false;
},
disable: function() {
  if (this.hasInput()) {
    this.input.prop('disabled', true);
    this.element.trigger({
      type: 'disable',
      color: this.color,
      value: this.getValue()
    });
    return true;
  }
  return false;
},
enable: function() {
  if (this.hasInput()) {
    this.input.prop('disabled', false);
    this.element.trigger({
      type: 'enable',
      color: this.color,
      value: this.getValue()
    });
    return true;
  }
  return false;
},
currentSlider: null,
mousePointer: {
  left: 0,
  top: 0
},
mousedown: function(e) {
  if (!e.pageX && !e.pageY && e.originalEvent && e.originalEvent.touches) {
    e.pageX = e.originalEvent.touches[0].pageX;
    e.pageY = e.originalEvent.touches[0].pageY;
  }
  e.stopPropagation();
  e.preventDefault();

  var target = $(e.target);

  //detect the slider and set the limits and callbacks
  var zone = target.closest('div');
  var sl = this.options.horizontal ? this.options.slidersHorz : this.options.sliders;
  if (!zone.is('.colorpicker')) {
    if (zone.is('.colorpicker-saturation')) {
      this.currentSlider = $.extend({}, sl.saturation);
    } else if (zone.is('.colorpicker-hue')) {
      this.currentSlider = $.extend({}, sl.hue);
    } else if (zone.is('.colorpicker-alpha')) {
      this.currentSlider = $.extend({}, sl.alpha);
    } else {
      return false;
    }
    var offset = zone.offset();
    //reference to guide's style
    this.currentSlider.guide = zone.find('i')[0].style;
    this.currentSlider.left = e.pageX - offset.left;
    this.currentSlider.top = e.pageY - offset.top;
    this.mousePointer = {
      left: e.pageX,
      top: e.pageY
    };
    //trigger mousemove to move the guide to the current position
    $(window.document).on({
      'mousemove.colorpicker': $.proxy(this.mousemove, this),
      'touchmove.colorpicker': $.proxy(this.mousemove, this),
      'mouseup.colorpicker': $.proxy(this.mouseup, this),
      'touchend.colorpicker': $.proxy(this.mouseup, this)
    }).trigger('mousemove');
  }
  return false;
},
mousemove: function(e) {
  if (!e.pageX && !e.pageY && e.originalEvent && e.originalEvent.touches) {
    e.pageX = e.originalEvent.touches[0].pageX;
    e.pageY = e.originalEvent.touches[0].pageY;
  }
  e.stopPropagation();
  e.preventDefault();
  var left = Math.max(
    0,
    Math.min(
      this.currentSlider.maxLeft,
      this.currentSlider.left + ((e.pageX || this.mousePointer.left) - this.mousePointer.left)
    )
  );
  var top = Math.max(
    0,
    Math.min(
      this.currentSlider.maxTop,
      this.currentSlider.top + ((e.pageY || this.mousePointer.top) - this.mousePointer.top)
    )
  );
  this.currentSlider.guide.left = left + 'px';
  this.currentSlider.guide.top = top + 'px';
  if (this.currentSlider.callLeft) {
    this.color[this.currentSlider.callLeft].call(this.color, left / this.currentSlider.maxLeft);
  }
  if (this.currentSlider.callTop) {
    this.color[this.currentSlider.callTop].call(this.color, top / this.currentSlider.maxTop);
  }
  // Change format dynamically
  // Only occurs if user choose the dynamic format by
  // setting option format to false
  if (
    this.options.format === false &&
    (this.currentSlider.callTop === 'setAlpha' ||
      this.currentSlider.callLeft === 'setAlpha')
  ) {

    // Converting from hex / rgb to rgba
    if (this.color.value.a !== 1) {
      this.format = 'rgba';
      this.color.origFormat = 'rgba';
    }

    // Converting from rgba to hex
    else {
      this.format = 'hex';
      this.color.origFormat = 'hex';
    }
  }
  this.update(true);

  this.element.trigger({
    type: 'changeColor',
    color: this.color
  });
  return false;
},
mouseup: function(e) {
  e.stopPropagation();
  e.preventDefault();
  $(window.document).off({
    'mousemove.colorpicker': this.mousemove,
    'touchmove.colorpicker': this.mousemove,
    'mouseup.colorpicker': this.mouseup,
    'touchend.colorpicker': this.mouseup
  });
  return false;
},
change: function(e) {
  this.keyup(e);
},
keyup: function(e) {
  if ((e.keyCode === 38)) {
    if (this.color.value.a < 1) {
      this.color.value.a = Math.round((this.color.value.a + 0.01) * 100) / 100;
    }
    this.update(true);
  } else if ((e.keyCode === 40)) {
    if (this.color.value.a > 0) {
      this.color.value.a = Math.round((this.color.value.a - 0.01) * 100) / 100;
    }
    this.update(true);
  } else {
    this.color = this.createColor(this.input.val());
    // Change format dynamically
    // Only occurs if user choose the dynamic format by
    // setting option format to false
    if (this.color.origFormat && this.options.format === false) {
      this.format = this.color.origFormat;
    }
    if (this.getValue(false) !== false) {
      this.updateData();
      this.updateComponent();
      this.updatePicker();
    }
  }
  this.element.trigger({
    type: 'changeColor',
    color: this.color,
    value: this.input.val()
  });
}

};

$.colorpicker = Colorpicker;

$.fn.colorpicker = function(option) {

var apiArgs = Array.prototype.slice.call(arguments, 1),
  isSingleElement = (this.length === 1),
  returnValue = null;

var $jq = this.each(function() {
  var $this = $(this),
    inst = $this.data('colorpicker'),
    options = ((typeof option === 'object') ? option : {});

  if (!inst) {
    inst = new Colorpicker(this, options);
    $this.data('colorpicker', inst);
  }

  if (typeof option === 'string') {
    if ($.isFunction(inst[option])) {
      returnValue = inst[option].apply(inst, apiArgs);
    } else { // its a property ?
      if (apiArgs.length) {
        // set property
        inst[option] = apiArgs[0];
      }
      returnValue = inst[option];
    }
  } else {
    returnValue = $this;
  }
});
return isSingleElement ? returnValue : $jq;

};

$.fn.colorpicker.constructor = Colorpicker;