/*
 * 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: 2008-05-04 16:52:15 +0200 (So, 04 Mai 2008) $
 * $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);