/*!
 * jQuery UI Widget @VERSION
 * http://jqueryui.com
 *
 * Copyright 2014 jQuery Foundation and other contributors
 * Released under the MIT license.
 * http://jquery.org/license
 *
 * http://api.jqueryui.com/jQuery.widget/
 */
(function( factory ) {
    if ( typeof define === "function" && define.amd ) {

        // AMD. Register as an anonymous module.
        define( [ "jquery" ], factory );
    } else {

        // Browser globals
        factory( jQuery );
    }
}(function( $ ) {

    var widget_uuid = 0,
        widget_slice = Array.prototype.slice;

    $.cleanData = (function( orig ) {
        return function( elems ) {
            var events, elem, i;
            for ( i = 0; (elem = elems[i]) != null; i++ ) {
                try {

                    // Only trigger remove when necessary to save time
                    events = $._data( elem, "events" );
                    if ( events && events.remove ) {
                        $( elem ).triggerHandler( "remove" );
                    }

                    // http://bugs.jquery.com/ticket/8235
                } catch( e ) {}
            }
            orig( elems );
        };
    })( $.cleanData );

    $.widget = function( name, base, prototype ) {
        var fullName, existingConstructor, constructor, basePrototype,
        // proxiedPrototype allows the provided prototype to remain unmodified
        // so that it can be used as a mixin for multiple widgets (#8876)
            proxiedPrototype = {},
            namespace = name.split( "." )[ 0 ];

        name = name.split( "." )[ 1 ];
        fullName = namespace + "-" + name;

        if ( !prototype ) {
            prototype = base;
            base = $.Widget;
        }

        // create selector for plugin
        $.expr[ ":" ][ fullName.toLowerCase() ] = function( elem ) {
            return !!$.data( elem, fullName );
        };

        $[ namespace ] = $[ namespace ] || {};
        existingConstructor = $[ namespace ][ name ];
        constructor = $[ namespace ][ name ] = function( options, element ) {
            // allow instantiation without "new" keyword
            if ( !this._createWidget ) {
                return new constructor( options, element );
            }

            // allow instantiation without initializing for simple inheritance
            // must use "new" keyword (the code above always passes args)
            if ( arguments.length ) {
                this._createWidget( options, element );
            }
        };
        // extend with the existing constructor to carry over any static properties
        $.extend( constructor, existingConstructor, {
            version: prototype.version,
            // copy the object used to create the prototype in case we need to
            // redefine the widget later
            _proto: $.extend( {}, prototype ),
            // track widgets that inherit from this widget in case this widget is
            // redefined after a widget inherits from it
            _childConstructors: []
        });

        basePrototype = new base();
        // we need to make the options hash a property directly on the new instance
        // otherwise we'll modify the options hash on the prototype that we're
        // inheriting from
        basePrototype.options = $.widget.extend( {}, basePrototype.options );
        $.each( prototype, function( prop, value ) {
            if ( !$.isFunction( value ) ) {
                proxiedPrototype[ prop ] = value;
                return;
            }
            proxiedPrototype[ prop ] = (function() {
                var _super = function() {
                        return base.prototype[ prop ].apply( this, arguments );
                    },
                    _superApply = function( args ) {
                        return base.prototype[ prop ].apply( this, args );
                    };
                return function() {
                    var __super = this._super,
                        __superApply = this._superApply,
                        returnValue;

                    this._super = _super;
                    this._superApply = _superApply;

                    returnValue = value.apply( this, arguments );

                    this._super = __super;
                    this._superApply = __superApply;

                    return returnValue;
                };
            })();
        });
        constructor.prototype = $.widget.extend( basePrototype, {
            // TODO: remove support for widgetEventPrefix
            // always use the name + a colon as the prefix, e.g., draggable:start
            // don't prefix for widgets that aren't DOM-based
            widgetEventPrefix: existingConstructor ? (basePrototype.widgetEventPrefix || name) : name
        }, proxiedPrototype, {
            constructor: constructor,
            namespace: namespace,
            widgetName: name,
            widgetFullName: fullName
        });

        // If this widget is being redefined then we need to find all widgets that
        // are inheriting from it and redefine all of them so that they inherit from
        // the new version of this widget. We're essentially trying to replace one
        // level in the prototype chain.
        if ( existingConstructor ) {
            $.each( existingConstructor._childConstructors, function( i, child ) {
                var childPrototype = child.prototype;

                // redefine the child widget using the same prototype that was
                // originally used, but inherit from the new version of the base
                $.widget( childPrototype.namespace + "." + childPrototype.widgetName, constructor, child._proto );
            });
            // remove the list of existing child constructors from the old constructor
            // so the old child constructors can be garbage collected
            delete existingConstructor._childConstructors;
        } else {
            base._childConstructors.push( constructor );
        }

        $.widget.bridge( name, constructor );

        return constructor;
    };

    $.widget.extend = function( target ) {
        var input = widget_slice.call( arguments, 1 ),
            inputIndex = 0,
            inputLength = input.length,
            key,
            value;
        for ( ; inputIndex < inputLength; inputIndex++ ) {
            for ( key in input[ inputIndex ] ) {
                value = input[ inputIndex ][ key ];
                if ( input[ inputIndex ].hasOwnProperty( key ) && value !== undefined ) {
                    // Clone objects
                    if ( $.isPlainObject( value ) ) {
                        target[ key ] = $.isPlainObject( target[ key ] ) ?
                            $.widget.extend( {}, target[ key ], value ) :
                            // Don't extend strings, arrays, etc. with objects
                            $.widget.extend( {}, value );
                        // Copy everything else by reference
                    } else {
                        target[ key ] = value;
                    }
                }
            }
        }
        return target;
    };

    $.widget.bridge = function( name, object ) {
        var fullName = object.prototype.widgetFullName || name;
        $.fn[ name ] = function( options ) {
            var isMethodCall = typeof options === "string",
                args = widget_slice.call( arguments, 1 ),
                returnValue = this;

            // allow multiple hashes to be passed on init
            options = !isMethodCall && args.length ?
                $.widget.extend.apply( null, [ options ].concat(args) ) :
                options;

            if ( isMethodCall ) {
                this.each(function() {
                    var methodValue,
                        instance = $.data( this, fullName );
                    if ( options === "instance" ) {
                        returnValue = instance;
                        return false;
                    }
                    if ( !instance ) {
                        return $.error( "cannot call methods on " + name + " prior to initialization; " +
                        "attempted to call method '" + options + "'" );
                    }
                    if ( !$.isFunction( instance[options] ) || options.charAt( 0 ) === "_" ) {
                        return $.error( "no such method '" + options + "' for " + name + " widget instance" );
                    }
                    methodValue = instance[ options ].apply( instance, args );
                    if ( methodValue !== instance && methodValue !== undefined ) {
                        returnValue = methodValue && methodValue.jquery ?
                            returnValue.pushStack( methodValue.get() ) :
                            methodValue;
                        return false;
                    }
                });
            } else {
                this.each(function() {
                    var instance = $.data( this, fullName );
                    if ( instance ) {
                        instance.option( options || {} );
                        if ( instance._init ) {
                            instance._init();
                        }
                    } else {
                        $.data( this, fullName, new object( options, this ) );
                    }
                });
            }

            return returnValue;
        };
    };

    $.Widget = function( /* options, element */ ) {};
    $.Widget._childConstructors = [];

    $.Widget.prototype = {
        widgetName: "widget",
        widgetEventPrefix: "",
        defaultElement: "<div>",
        options: {
            disabled: false,

            // callbacks
            create: null
        },
        _createWidget: function( options, element ) {
            element = $( element || this.defaultElement || this )[ 0 ];
            this.element = $( element );
            this.uuid = widget_uuid++;
            this.eventNamespace = "." + this.widgetName + this.uuid;
            this.options = $.widget.extend( {},
                this.options,
                this._getCreateOptions(),
                options );

            this.bindings = $();
            this.hoverable = $();
            this.focusable = $();

            if ( element !== this ) {
                $.data( element, this.widgetFullName, this );
                this._on( true, this.element, {
                    remove: function( event ) {
                        if ( event.target === element ) {
                            this.destroy();
                        }
                    }
                });
                this.document = $( element.style ?
                    // element within the document
                    element.ownerDocument :
                    // element is window or document
                element.document || element );
                this.window = $( this.document[0].defaultView || this.document[0].parentWindow );
            }

            this._create();
            this._trigger( "create", null, this._getCreateEventData() );
            this._init();
        },
        _getCreateOptions: $.noop,
        _getCreateEventData: $.noop,
        _create: $.noop,
        _init: $.noop,

        destroy: function() {
            this._destroy();
            // we can probably remove the unbind calls in 2.0
            // all event bindings should go through this._on()
            this.element
                .unbind( this.eventNamespace )
                .removeData( this.widgetFullName )
                // support: jquery <1.6.3
                // http://bugs.jquery.com/ticket/9413
                .removeData( $.camelCase( this.widgetFullName ) );
            this.widget()
                .unbind( this.eventNamespace )
                .removeAttr( "aria-disabled" )
                .removeClass(
                this.widgetFullName + "-disabled " +
                "ui-state-disabled" );

            // clean up events and states
            this.bindings.unbind( this.eventNamespace );
            this.hoverable.removeClass( "ui-state-hover" );
            this.focusable.removeClass( "ui-state-focus" );
        },
        _destroy: $.noop,

        widget: function() {
            return this.element;
        },

        option: function( key, value ) {
            var options = key,
                parts,
                curOption,
                i;

            if ( arguments.length === 0 ) {
                // don't return a reference to the internal hash
                return $.widget.extend( {}, this.options );
            }

            if ( typeof key === "string" ) {
                // handle nested keys, e.g., "foo.bar" => { foo: { bar: ___ } }
                options = {};
                parts = key.split( "." );
                key = parts.shift();
                if ( parts.length ) {
                    curOption = options[ key ] = $.widget.extend( {}, this.options[ key ] );
                    for ( i = 0; i < parts.length - 1; i++ ) {
                        curOption[ parts[ i ] ] = curOption[ parts[ i ] ] || {};
                        curOption = curOption[ parts[ i ] ];
                    }
                    key = parts.pop();
                    if ( arguments.length === 1 ) {
                        return curOption[ key ] === undefined ? null : curOption[ key ];
                    }
                    curOption[ key ] = value;
                } else {
                    if ( arguments.length === 1 ) {
                        return this.options[ key ] === undefined ? null : this.options[ key ];
                    }
                    options[ key ] = value;
                }
            }

            this._setOptions( options );

            return this;
        },
        _setOptions: function( options ) {
            var key;

            for ( key in options ) {
                this._setOption( key, options[ key ] );
            }

            return this;
        },
        _setOption: function( key, value ) {
            this.options[ key ] = value;

            if ( key === "disabled" ) {
                this.widget()
                    .toggleClass( this.widgetFullName + "-disabled", !!value );

                // If the widget is becoming disabled, then nothing is interactive
                if ( value ) {
                    this.hoverable.removeClass( "ui-state-hover" );
                    this.focusable.removeClass( "ui-state-focus" );
                }
            }

            return this;
        },

        enable: function() {
            return this._setOptions({ disabled: false });
        },
        disable: function() {
            return this._setOptions({ disabled: true });
        },

        _on: function( suppressDisabledCheck, element, handlers ) {
            var delegateElement,
                instance = this;

            // no suppressDisabledCheck flag, shuffle arguments
            if ( typeof suppressDisabledCheck !== "boolean" ) {
                handlers = element;
                element = suppressDisabledCheck;
                suppressDisabledCheck = false;
            }

            // no element argument, shuffle and use this.element
            if ( !handlers ) {
                handlers = element;
                element = this.element;
                delegateElement = this.widget();
            } else {
                element = delegateElement = $( element );
                this.bindings = this.bindings.add( element );
            }

            $.each( handlers, function( event, handler ) {
                function handlerProxy() {
                    // allow widgets to customize the disabled handling
                    // - disabled as an array instead of boolean
                    // - disabled class as method for disabling individual parts
                    if ( !suppressDisabledCheck &&
                        ( instance.options.disabled === true ||
                        $( this ).hasClass( "ui-state-disabled" ) ) ) {
                        return;
                    }
                    return ( typeof handler === "string" ? instance[ handler ] : handler )
                        .apply( instance, arguments );
                }

                // copy the guid so direct unbinding works
                if ( typeof handler !== "string" ) {
                    handlerProxy.guid = handler.guid =
                        handler.guid || handlerProxy.guid || $.guid++;
                }

                var match = event.match( /^([\w:-]*)\s*(.*)$/ ),
                    eventName = match[1] + instance.eventNamespace,
                    selector = match[2];
                if ( selector ) {
                    delegateElement.delegate( selector, eventName, handlerProxy );
                } else {
                    element.bind( eventName, handlerProxy );
                }
            });
        },

        _off: function( element, eventName ) {
            eventName = (eventName || "").split( " " ).join( this.eventNamespace + " " ) + this.eventNamespace;
            element.unbind( eventName ).undelegate( eventName );
        },

        _delay: function( handler, delay ) {
            function handlerProxy() {
                return ( typeof handler === "string" ? instance[ handler ] : handler )
                    .apply( instance, arguments );
            }
            var instance = this;
            return setTimeout( handlerProxy, delay || 0 );
        },

        _hoverable: function( element ) {
            this.hoverable = this.hoverable.add( element );
            this._on( element, {
                mouseenter: function( event ) {
                    $( event.currentTarget ).addClass( "ui-state-hover" );
                },
                mouseleave: function( event ) {
                    $( event.currentTarget ).removeClass( "ui-state-hover" );
                }
            });
        },

        _focusable: function( element ) {
            this.focusable = this.focusable.add( element );
            this._on( element, {
                focusin: function( event ) {
                    $( event.currentTarget ).addClass( "ui-state-focus" );
                },
                focusout: function( event ) {
                    $( event.currentTarget ).removeClass( "ui-state-focus" );
                }
            });
        },

        _trigger: function( type, event, data ) {
            var prop, orig,
                callback = this.options[ type ];

            data = data || {};
            event = $.Event( event );
            event.type = ( type === this.widgetEventPrefix ?
                type :
            this.widgetEventPrefix + type ).toLowerCase();
            // the original event may come from any element
            // so we need to reset the target on the new event
            event.target = this.element[ 0 ];

            // copy original event properties over to the new event
            orig = event.originalEvent;
            if ( orig ) {
                for ( prop in orig ) {
                    if ( !( prop in event ) ) {
                        event[ prop ] = orig[ prop ];
                    }
                }
            }

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

    $.each( { show: "fadeIn", hide: "fadeOut" }, function( method, defaultEffect ) {
        $.Widget.prototype[ "_" + method ] = function( element, options, callback ) {
            if ( typeof options === "string" ) {
                options = { effect: options };
            }
            var hasOptions,
                effectName = !options ?
                    method :
                    options === true || typeof options === "number" ?
                        defaultEffect :
                    options.effect || defaultEffect;
            options = options || {};
            if ( typeof options === "number" ) {
                options = { duration: options };
            }
            hasOptions = !$.isEmptyObject( options );
            options.complete = callback;
            if ( options.delay ) {
                element.delay( options.delay );
            }
            if ( hasOptions && $.effects && $.effects.effect[ effectName ] ) {
                element[ method ]( options );
            } else if ( effectName !== method && element[ effectName ] ) {
                element[ effectName ]( options.duration, options.easing, callback );
            } else {
                element.queue(function( next ) {
                    $( this )[ method ]();
                    if ( callback ) {
                        callback.call( element[ 0 ] );
                    }
                    next();
                });
            }
        };
    });

    return $.widget;

}));