/*
 * jQuery UI @VERSION
 *
 * Copyright (c) 2009 AUTHORS.txt (http://jqueryui.com/about)
 * Dual licensed under the MIT (MIT-LICENSE.txt)
 * and GPL (GPL-LICENSE.txt) licenses.
 *
 * http://docs.jquery.com/UI
 */
;jQuery.ui || (function($) {

var _remove = $.fn.remove,
        isFF2 = $.browser.mozilla && (parseFloat($.browser.version) < 1.9);

//Helper functions and ui object
$.ui = {
        version: "@VERSION",

        // $.ui.plugin is deprecated.  Use the proxy pattern instead.
        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 || !instance.element[0].parentNode) { return; }

                        for (var i = 0; i < set.length; i++) {
                                if (instance.options[set[i][0]]) {
                                        set[i][1].apply(instance.element, args);
                                }
                        }
                }
        },

        contains: function(a, b) {
                return document.compareDocumentPosition
                        ? a.compareDocumentPosition(b) & 16
                        : a !== b && a.contains(b);
        },

        hasScroll: function(el, a) {

                //If overflow is hidden, the element might have extra content, but the user wants to hide it
                if ($(el).css('overflow') == 'hidden') { return false; }

                var scroll = (a && a == 'left') ? 'scrollLeft' : 'scrollTop',
                        has = false;

                if (el[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
                el[scroll] = 1;
                has = (el[scroll] > 0);
                el[scroll] = 0;
                return has;
        },

        isOverAxis: function(x, reference, size) {
                //Determines when x coordinate is over "b" element axis
                return (x > reference) && (x < (reference + size));
        },

        isOver: function(y, x, top, left, height, width) {
                //Determines when x, y coordinates is over "b" element
                return $.ui.isOverAxis(y, top, height) && $.ui.isOverAxis(x, left, width);
        },

        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
        }
};

// WAI-ARIA normalization
if (isFF2) {
        var attr = $.attr,
                removeAttr = $.fn.removeAttr,
                ariaNS = "http://www.w3.org/2005/07/aaa",
                ariaState = /^aria-/,
                ariaRole = /^wairole:/;

        $.attr = function(elem, name, value) {
                var set = value !== undefined;

                return (name == 'role'
                        ? (set
                                ? attr.call(this, elem, name, "wairole:" + value)
                                : (attr.apply(this, arguments) || "").replace(ariaRole, ""))
                        : (ariaState.test(name)
                                ? (set
                                        ? elem.setAttributeNS(ariaNS,
                                                name.replace(ariaState, "aaa:"), value)
                                        : attr.call(this, elem, name.replace(ariaState, "aaa:")))
                                : attr.apply(this, arguments)));
        };

        $.fn.removeAttr = function(name) {
                return (ariaState.test(name)
                        ? this.each(function() {
                                this.removeAttributeNS(ariaNS, name.replace(ariaState, ""));
                        }) : removeAttr.call(this, name));
        };
}

//jQuery plugins
$.fn.extend({
        remove: function() {
                // Safari has a native remove event which actually removes DOM elements,
                // so we have to use triggerHandler instead of trigger (#3037).
                $("*", this).add(this).each(function() {
                        $(this).triggerHandler("remove");
                });
                return _remove.apply(this, arguments );
        },

        enableSelection: function() {
                return this
                        .attr('unselectable', 'off')
                        .css('MozUserSelect', '')
                        .unbind('selectstart.ui');
        },

        disableSelection: function() {
                return this
                        .attr('unselectable', 'on')
                        .css('MozUserSelect', 'none')
                        .bind('selectstart.ui', function() { return false; });
        },

        scrollParent: function() {
                var scrollParent;
                if(($.browser.msie && (/(static|relative)/).test(this.css('position'))) || (/absolute/).test(this.css('position'))) {
                        scrollParent = this.parents().filter(function() {
                                return (/(relative|absolute|fixed)/).test($.curCSS(this,'position',1)) && (/(auto|scroll)/).test($.curCSS(this,'overflow',1)+$.curCSS(this,'overflow-y',1)+$.curCSS(this,'overflow-x',1));
                        }).eq(0);
                } else {
                        scrollParent = this.parents().filter(function() {
                                return (/(auto|scroll)/).test($.curCSS(this,'overflow',1)+$.curCSS(this,'overflow-y',1)+$.curCSS(this,'overflow-x',1));
                        }).eq(0);
                }

                return (/fixed/).test(this.css('position')) || !scrollParent.length ? $(document) : scrollParent;
        }
});


//Additional selectors
$.extend($.expr[':'], {
        data: function(elem, i, match) {
                return !!$.data(elem, match[3]);
        },

        focusable: function(element) {
                var nodeName = element.nodeName.toLowerCase(),
                        tabIndex = $.attr(element, 'tabindex');
                return (/input|select|textarea|button|object/.test(nodeName)
                        ? !element.disabled
                        : 'a' == nodeName || 'area' == nodeName
                                ? element.href || !isNaN(tabIndex)
                                : !isNaN(tabIndex))
                        // the element and all of its ancestors must be visible
                        // the browser may report that the area is hidden
                        && !$(element)['area' == nodeName ? 'parents' : 'closest'](':hidden').length;
        },

        tabbable: function(element) {
                var tabIndex = $.attr(element, 'tabindex');
                return (isNaN(tabIndex) || tabIndex >= 0) && $(element).is(':focusable');
        }
});



// $.widget is a factory to create jQuery plugins
// taking some boilerplate code out of the plugin code
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))._init());

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

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

                this.namespace = namespace;
                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(event, key, value) {
                                if (event.target == element) {
                                        return self._setData(key, value);
                                }
                        })
                        .bind('getData.' + name, function(event, key) {
                                if (event.target == element) {
                                        return self._getData(key);
                                }
                        })
                        .bind('remove', function() {
                                return self.destroy();
                        });
        };

        // 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)
                        .removeClass(this.widgetBaseClass + '-disabled' + ' ' + this.namespace + '-state-disabled')
                        .removeAttr('aria-disabled');
        },

        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' + ' ' +
                                        this.namespace + '-state-disabled')
                                .attr("aria-disabled", value);
                }
        },

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

        _trigger: function(type, event, data) {
                var callback = this.options[type],
                        eventName = (type == this.widgetEventPrefix
                                ? type : this.widgetEventPrefix + type);

                event = $.Event(event);
                event.type = eventName;

                // copy original event properties over to the new event
                // this would happen if we could call $.event.fix instead of $.Event
                // but we don't have a way to force an event to be fixed multiple times
                if (event.originalEvent) {
                        for (var i = $.event.props.length, prop; i;) {
                                prop = $.event.props[--i];
                                event[prop] = event.originalEvent[prop];
                        }
                }

                this.element.trigger(event, data);

                return !($.isFunction(callback) && callback.call(this.element[0], event, data) === false
                        || event.isDefaultPrevented());
        }
};

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


/** Mouse Interaction Plugin **/

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

                this.element
                        .bind('mousedown.'+this.widgetName, function(event) {
                                return self._mouseDown(event);
                        })
                        .bind('click.'+this.widgetName, function(event) {
                                if(self._preventClickEvent) {
                                        self._preventClickEvent = false;
                                        event.stopImmediatePropagation();
                                        return false;
                                }
                        });

                // 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(event) {
                // don't let more than one widget handle mouseStart
                // TODO: figure out why we have to use originalEvent
                event.originalEvent = event.originalEvent || {};
                if (event.originalEvent.mouseHandled) { return; }

                // we may have missed mouseup (out of window)
                (this._mouseStarted && this._mouseUp(event));

                this._mouseDownEvent = event;

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

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

                if (this._mouseDistanceMet(event) && this._mouseDelayMet(event)) {
                        this._mouseStarted = (this._mouseStart(event) !== false);
                        if (!this._mouseStarted) {
                                event.preventDefault();
                                return true;
                        }
                }

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

                // preventDefault() is used to prevent the selection of text here -
                // however, in Safari, this causes select boxes not to be selectable
                // anymore, so this fix is needed
                ($.browser.safari || event.preventDefault());

                event.originalEvent.mouseHandled = true;
                return true;
        },

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

                if (this._mouseStarted) {
                        this._mouseDrag(event);
                        return event.preventDefault();
                }

                if (this._mouseDistanceMet(event) && this._mouseDelayMet(event)) {
                        this._mouseStarted =
                                (this._mouseStart(this._mouseDownEvent, event) !== false);
                        (this._mouseStarted ? this._mouseDrag(event) : this._mouseUp(event));
                }

                return !this._mouseStarted;
        },

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

                if (this._mouseStarted) {
                        this._mouseStarted = false;
                        this._preventClickEvent = (event.target == this._mouseDownEvent.target);
                        this._mouseStop(event);
                }

                return false;
        },

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

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

        // These are placeholder methods, to be overriden by extending plugin
        _mouseStart: function(event) {},
        _mouseDrag: function(event) {},
        _mouseStop: function(event) {},
        _mouseCapture: function(event) { return true; }
};

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

})(jQuery);