/*
* 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
*/
; (function($) {

    /** jQuery core modifications and additions **/

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

    function isVisible(element) {
        function checkStyles(element) {
            var style = element.style;
            return (style.display != 'none' && style.visibility != 'hidden');
        }

        var visible = checkStyles(element);

        (visible && $.each($.dir(element, 'parentNode'), function() {
            return (visible = checkStyles(this));
        }));

        return visible;
    }

    $.extend($.expr[':'], {
        data: function(a, i, m) {
            return $.data(a, m[3]);
        },

        // TODO: add support for object, area
        tabbable: function(a, i, m) {
            var nodeName = a.nodeName.toLowerCase();

            return (
            // in tab order
			a.tabIndex >= 0 &&

			( // filter node types that participate in the tab order

            // anchor tag
				('a' == nodeName && a.href) ||

            // enabled form element
				(/input|select|textarea|button/.test(nodeName) &&
					'hidden' != a.type && !a.disabled)
			) &&

            // visible on page
			isVisible(a)
		);
        }
    });

    $.keyCode = {
        BACKSPACE: 8,
        CAPS_LOCK: 20,
        COMMA: 188,
        CONTROL: 17,
        DELETE: 46,
        DOWN: 40,
        END: 35,
        ENTER: 13,
        ESCAPE: 27,
        HOME: 36,
        INSERT: 45,
        LEFT: 37,
        NUMPAD_ADD: 107,
        NUMPAD_DECIMAL: 110,
        NUMPAD_DIVIDE: 111,
        NUMPAD_ENTER: 108,
        NUMPAD_MULTIPLY: 106,
        NUMPAD_SUBTRACT: 109,
        PAGE_DOWN: 34,
        PAGE_UP: 33,
        PERIOD: 190,
        RIGHT: 39,
        SHIFT: 16,
        SPACE: 32,
        TAB: 9,
        UP: 38
    };

    // $.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, args) {
        function getMethods(type) {
            var methods = $[namespace][plugin][type] || [];
            return (typeof methods == 'string' ? methods.split(/,?\s+/) : methods);
        }

        var methods = getMethods('getter');
        if (args.length == 1 && typeof args[0] == 'string') {
            methods = methods.concat(getMethods('getterSetter'));
        }
        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);

            // prevent calls to internal methods
            if (isMethodCall && options.substring(0, 1) == '_') {
                return this;
            }

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

            // handle initialization and non-getter methods
            return this.each(function() {
                var instance = $.data(this, name);

                // constructor
                (!instance && !isMethodCall &&
				$.data(this, name, new $[namespace][name](this, options)));

                // method call
                (instance && isMethodCall && $.isFunction(instance[options]) &&
				instance[options].apply(instance, args));
            });
        };

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

            this.widgetName = name;
            this.widgetEventPrefix = $[namespace][name].eventPrefix || name;
            this.widgetBaseClass = namespace + '-' + name;

            this.options = $.extend({},
			$.widget.defaults,
			$[namespace][name].defaults,
			$.metadata && $.metadata.get(element)[name],
			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);

        // TODO: merge getter and getterSetter properties from widget prototype
        // and plugin prototype
        $[namespace][name].getterSetter = 'option';
    };

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

        option: function(key, value) {
            var options = key,
			self = this;

            if (typeof key == "string") {
                if (value === undefined) {
                    return this._getData(key);
                }
                options = {};
                options[key] = value;
            }

            $.each(options, function(key, value) {
                self._setData(key, value);
            });
        },
        _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);
        },

        _trigger: function(type, e, data) {
            var eventName = (type == this.widgetEventPrefix
			? type : this.widgetEventPrefix + type);
            e = e || $.event.fix({ type: eventName, target: this.element[0] });
            return this.element.triggerHandler(eventName, [e, data], this.options[type]);
        }
    };

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


    /** jQuery UI core **/

    $.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')
			.bind('selectstart.ui', function() { return false; });
        },
        enableSelection: function(el) {
            $(el)
			.attr('unselectable', 'off')
			.css('MozUserSelect', '')
			.unbind('selectstart.ui');
        },
        hasScroll: function(e, a) {
            var scroll = (a && a == 'left') ? 'scrollLeft' : 'scrollTop',
			has = false;

            if (e[scroll] > 0) { return true; }

            // TODO: determine which cases actually cause this to happen
            // if the element doesn't have the scroll set, see if it's possible to
            // set the scroll
            e[scroll] = 1;
            has = (e[scroll] > 0);
            e[scroll] = 0;
            return has;
        }
    };


    /** 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);