/*
 * jQuery UI @VERSION
 *
 * 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
 *
 * $Date: 2008-08-28 14:22:08 $
 * $Rev: 5419 $
 */
;(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-resizable-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(e) {
      e.unselectable = "on";
      e.onselectstart = function() { return false; };
      if (e.style) { e.style.MozUserSelect = "none"; }
    },
    enableSelection: function(e) {
      e.unselectable = "off";
      e.onselectstart = function() { return true; };
      if (e.style) { e.style.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).trigger("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);
  };
  
  var widgetPrototype = {
    init: function() {},
    destroy: function() {
      this.element.removeData(this.widgetName);
    },
    
    getData: function(key) {
      return this.options[key];
    },
    setData: function(key, value) {
      this.options[key] = value;
    },
    
    enable: function() {
      this.setData('disabled', false);
    },
    disable: function() {
      this.setData('disabled', true);
    }
  };
  
  $.widget = function(name, prototype) {
    var namespace = name.split(".")[0];
    name = name.split(".")[1];
    // create plugin method
    $.fn[name] = function(options, data) {
      var isMethodCall = (typeof options == 'string'),
        args = arguments;
      
      if (isMethodCall && getter(namespace, name, options)) {
        var instance = $.data(this[0], name);
        return (instance ? instance[options](data) : undefined); 
      }
      
      return this.each(function() {
        var instance = $.data(this, name);
        if (!instance) {
          $.data(this, name, new $[namespace][name](this, options));
        } else if (isMethodCall) {
          instance[options].apply(instance, $.makeArray(args).slice(1));
        }
      });
    };
    
    // create widget constructor
    $[namespace][name] = function(element, options) {
      var self = this;
      
      this.widgetName = name;
      
      this.options = $.extend({}, $[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({}, widgetPrototype, prototype);
  };
  
  
  /** Mouse Interaction Plugin **/
  
  $.widget("ui.mouse", {
    init: function() {
      var self = this;
      
      this.element
        .bind('mousedown.mouse', function() { return self.click.apply(self, arguments); })
        .bind('mouseup.mouse', function() { (self.timer && clearInterval(self.timer)); })
        .bind('click.mouse', function() { if(self.initialized) { self.initialized = false; return false; } });
      //Prevent text selection in IE
      if ($.browser.msie) {
        this.unselectable = this.element.attr('unselectable');
        this.element.attr('unselectable', 'on');
      }
    },
    destroy: function() {
      this.element.unbind('.mouse').removeData("mouse");
      ($.browser.msie && this.element.attr('unselectable', this.unselectable));
    },
    trigger: function() { return this.click.apply(this, arguments); },
    click: function(e) {
    
      if(    e.which != 1 //only left click starts dragging
        || $.inArray(e.target.nodeName.toLowerCase(), this.options.dragPrevention || []) != -1 // Prevent execution on defined elements
        || (this.options.condition && !this.options.condition.apply(this.options.executor || this, [e, this.element])) //Prevent execution on condition
      ) { return true; }
    
      var self = this;
      this.initialized = false;
      var initialize = function() {
        self._MP = { left: e.pageX, top: e.pageY }; // Store the click mouse position
        $(document).bind('mouseup.mouse', function() { return self.stop.apply(self, arguments); });
        $(document).bind('mousemove.mouse', function() { return self.drag.apply(self, arguments); });
    
        if(!self.initalized && Math.abs(self._MP.left-e.pageX) >= self.options.distance || Math.abs(self._MP.top-e.pageY) >= self.options.distance) {
          (self.options.start && self.options.start.call(self.options.executor || self, e, self.element));
          (self.options.drag && self.options.drag.call(self.options.executor || self, e, this.element)); //This is actually not correct, but expected
          self.initialized = true;
        }
      };

      if(this.options.delay) {
        if(this.timer) { clearInterval(this.timer); }
        this.timer = setTimeout(initialize, this.options.delay);
      } else {
        initialize();
      }
        
      return false;
      
    },
    stop: function(e) {
      
      if(!this.initialized) {
        return $(document).unbind('mouseup.mouse').unbind('mousemove.mouse');
      }

      (this.options.stop && this.options.stop.call(this.options.executor || this, e, this.element));
      
      $(document).unbind('mouseup.mouse').unbind('mousemove.mouse');
      return false;
      
    },
    drag: function(e) {

      var o = this.options;
      if ($.browser.msie && !e.button) {
        return this.stop.call(this, e); // IE mouseup check
      }
      
      if(!this.initialized && (Math.abs(this._MP.left-e.pageX) >= o.distance || Math.abs(this._MP.top-e.pageY) >= o.distance)) {
        (o.start && o.start.call(o.executor || this, e, this.element));
        this.initialized = true;
      } else {
        if(!this.initialized) { return false; }
      }

      (o.drag && o.drag.call(this.options.executor || this, e, this.element));
      return false;
      
    }
  });
  
})(jQuery);