/*
 * jQuery UI 1.5.2
 *
 * Copyright (c) 2008 Paul Bakaus (ui.jquery.com)
 * Dual licensed under the MIT (MIT-LICENSE.txt)
 * and GPL (GPL-LICENSE.txt) licenses.
 *
 * http://docs.jquery.com/UI
 */
;(function($) {

$.ui = {
  plugin: {
    add: function(module, option, set) {
      var proto = $.ui[module].prototype;
      for(var i in set) {
        proto.plugins[i] = proto.plugins[i] || [];
        proto.plugins[i].push([option, set[i]]);
      }
    },
    call: function(instance, name, args) {
      var set = instance.plugins[name];
      if(!set) { return; }

      for (var i = 0; i < set.length; i++) {
        if (instance.options[set[i][0]]) {
          set[i][1].apply(instance.element, args);
        }
      }
    }
  },
  cssCache: {},
  css: function(name) {
    if ($.ui.cssCache[name]) { return $.ui.cssCache[name]; }
    var tmp = $('<div class="ui-gen">').addClass(name).css({position:'absolute', top:'-5000px', left:'-5000px', display:'block'}).appendTo('body');

    //if (!$.browser.safari)
      //tmp.appendTo('body');

    //Opera and Safari set width and height to 0px instead of auto
    //Safari returns rgba(0,0,0,0) when bgcolor is not set
    $.ui.cssCache[name] = !!(
      (!(/auto|default/).test(tmp.css('cursor')) || (/^[1-9]/).test(tmp.css('height')) || (/^[1-9]/).test(tmp.css('width')) ||
      !(/none/).test(tmp.css('backgroundImage')) || !(/transparent|rgba\(0, 0, 0, 0\)/).test(tmp.css('backgroundColor')))
    );
    try { $('body').get(0).removeChild(tmp.get(0));  } catch(e){}
    return $.ui.cssCache[name];
  },
  disableSelection: function(el) {
    $(el).attr('unselectable', 'on').css('MozUserSelect', 'none');
  },
  enableSelection: function(el) {
    $(el).attr('unselectable', 'off').css('MozUserSelect', '');
  },
  hasScroll: function(e, a) {
    var scroll = /top/.test(a||"top") ? 'scrollTop' : 'scrollLeft', has = false;
    if (e[scroll] > 0) return true; e[scroll] = 1;
    has = e[scroll] > 0 ? true : false; e[scroll] = 0;
    return has;
  }
};


/** jQuery core modifications and additions **/

var _remove = $.fn.remove;
$.fn.remove = function() {
  $("*", this).add(this).triggerHandler("remove");
  return _remove.apply(this, arguments );
};

// $.widget is a factory to create jQuery plugins
// taking some boilerplate code out of the plugin code
// created by Scott González and Jörn Zaefferer
function getter(namespace, plugin, method) {
  var methods = $[namespace][plugin].getter || [];
  methods = (typeof methods == "string" ? methods.split(/,?\s+/) : methods);
  return ($.inArray(method, methods) != -1);
}

$.widget = function(name, prototype) {
  var namespace = name.split(".")[0];
  name = name.split(".")[1];

  // create plugin method
  $.fn[name] = function(options) {
    var isMethodCall = (typeof options == 'string'),
      args = Array.prototype.slice.call(arguments, 1);

    if (isMethodCall && getter(namespace, name, options)) {
      var instance = $.data(this[0], name);
      return (instance ? instance[options].apply(instance, args)
        : undefined);
    }

    return this.each(function() {
      var instance = $.data(this, name);
      if (isMethodCall && instance && $.isFunction(instance[options])) {
        instance[options].apply(instance, args);
      } else if (!isMethodCall) {
        $.data(this, name, new $[namespace][name](this, options));
      }
    });
  };

  // create widget constructor
  $[namespace][name] = function(element, options) {
    var self = this;

    this.widgetName = name;
    this.widgetBaseClass = namespace + '-' + name;

    this.options = $.extend({}, $.widget.defaults, $[namespace][name].defaults, options);
    this.element = $(element)
      .bind('setData.' + name, function(e, key, value) {
        return self.setData(key, value);
      })
      .bind('getData.' + name, function(e, key) {
        return self.getData(key);
      })
      .bind('remove', function() {
        return self.destroy();
      });
    this.init();
  };

  // add widget prototype
  $[namespace][name].prototype = $.extend({}, $.widget.prototype, prototype);
};

$.widget.prototype = {
  init: function() {},
  destroy: function() {
    this.element.removeData(this.widgetName);
  },

  getData: function(key) {
    return this.options[key];
  },
  setData: function(key, value) {
    this.options[key] = value;

    if (key == 'disabled') {
      this.element[value ? 'addClass' : 'removeClass'](
        this.widgetBaseClass + '-disabled');
    }
  },

  enable: function() {
    this.setData('disabled', false);
  },
  disable: function() {
    this.setData('disabled', true);
  }
};

$.widget.defaults = {
  disabled: false
};


/** Mouse Interaction Plugin **/

$.ui.mouse = {
  mouseInit: function() {
    var self = this;

    this.element.bind('mousedown.'+this.widgetName, function(e) {
      return self.mouseDown(e);
    });

    // Prevent text selection in IE
    if ($.browser.msie) {
      this._mouseUnselectable = this.element.attr('unselectable');
      this.element.attr('unselectable', 'on');
    }

    this.started = false;
  },

  // TODO: make sure destroying one instance of mouse doesn't mess with
  // other instances of mouse
  mouseDestroy: function() {
    this.element.unbind('.'+this.widgetName);

    // Restore text selection in IE
    ($.browser.msie
      && this.element.attr('unselectable', this._mouseUnselectable));
  },

  mouseDown: function(e) {
    // we may have missed mouseup (out of window)
    (this._mouseStarted && this.mouseUp(e));

    this._mouseDownEvent = e;

    var self = this,
      btnIsLeft = (e.which == 1),
      elIsCancel = (typeof this.options.cancel == "string" ? $(e.target).parents().add(e.target).filter(this.options.cancel).length : false);
    if (!btnIsLeft || elIsCancel || !this.mouseCapture(e)) {
      return true;
    }

    this._mouseDelayMet = !this.options.delay;
    if (!this._mouseDelayMet) {
      this._mouseDelayTimer = setTimeout(function() {
        self._mouseDelayMet = true;
      }, this.options.delay);
    }

    if (this.mouseDistanceMet(e) && this.mouseDelayMet(e)) {
      this._mouseStarted = (this.mouseStart(e) !== false);
      if (!this._mouseStarted) {
        e.preventDefault();
        return true;
      }
    }

    // these delegates are required to keep context
    this._mouseMoveDelegate = function(e) {
      return self.mouseMove(e);
    };
    this._mouseUpDelegate = function(e) {
      return self.mouseUp(e);
    };
    $(document)
      .bind('mousemove.'+this.widgetName, this._mouseMoveDelegate)
      .bind('mouseup.'+this.widgetName, this._mouseUpDelegate);

    return false;
  },

  mouseMove: function(e) {
    // IE mouseup check - mouseup happened when mouse was out of window
    if ($.browser.msie && !e.button) {
      return this.mouseUp(e);
    }

    if (this._mouseStarted) {
      this.mouseDrag(e);
      return false;
    }

    if (this.mouseDistanceMet(e) && this.mouseDelayMet(e)) {
      this._mouseStarted =
        (this.mouseStart(this._mouseDownEvent, e) !== false);
      (this._mouseStarted ? this.mouseDrag(e) : this.mouseUp(e));
    }

    return !this._mouseStarted;
  },

  mouseUp: function(e) {
    $(document)
      .unbind('mousemove.'+this.widgetName, this._mouseMoveDelegate)
      .unbind('mouseup.'+this.widgetName, this._mouseUpDelegate);

    if (this._mouseStarted) {
      this._mouseStarted = false;
      this.mouseStop(e);
    }

    return false;
  },

  mouseDistanceMet: function(e) {
    return (Math.max(
        Math.abs(this._mouseDownEvent.pageX - e.pageX),
        Math.abs(this._mouseDownEvent.pageY - e.pageY)
      ) >= this.options.distance
    );
  },

  mouseDelayMet: function(e) {
    return this._mouseDelayMet;
  },

  // These are placeholder methods, to be overriden by extending plugin
  mouseStart: function(e) {},
  mouseDrag: function(e) {},
  mouseStop: function(e) {},
  mouseCapture: function(e) { return true; }
};

$.ui.mouse.defaults = {
  cancel: null,
  distance: 1,
  delay: 0
};

})(jQuery);