/*
 * jQuery UI 1.7.1
 *
 * 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: "1.7.1",

        // $.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 overridden 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);
