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From Erik de Bruin <e...@ixsoftware.nl>
Subject Re: git commit: [flex-sdk] [refs/heads/develop] - Falcon caught a duplicate variable
Date Mon, 02 Mar 2015 11:53:30 GMT
Alex,

What happened to this commit? The diff looks like you completely
replaced the entire contents of the file... While the subject suggests
you only changed the name of one of the variables?

Maybe revert and try to create a more readable diff?

EdB



On Sun, Mar 1, 2015 at 8:03 AM,  <aharui@apache.org> wrote:
> Repository: flex-sdk
> Updated Branches:
>   refs/heads/develop ca3287102 -> 3c40976eb
>
>
> Falcon caught a duplicate variable
>
>
> Project: http://git-wip-us.apache.org/repos/asf/flex-sdk/repo
> Commit: http://git-wip-us.apache.org/repos/asf/flex-sdk/commit/3c40976e
> Tree: http://git-wip-us.apache.org/repos/asf/flex-sdk/tree/3c40976e
> Diff: http://git-wip-us.apache.org/repos/asf/flex-sdk/diff/3c40976e
>
> Branch: refs/heads/develop
> Commit: 3c40976eb0b3a73d2bb7180cc22400917f719fc4
> Parents: ca32871
> Author: Alex Harui <aharui@apache.org>
> Authored: Sat Feb 28 23:03:24 2015 -0800
> Committer: Alex Harui <aharui@apache.org>
> Committed: Sat Feb 28 23:03:24 2015 -0800
>
> ----------------------------------------------------------------------
>  .../org/apache/flex/collections/ArrayList.as    | 1678 +++++++++---------
>  1 file changed, 839 insertions(+), 839 deletions(-)
> ----------------------------------------------------------------------
>
>
> http://git-wip-us.apache.org/repos/asf/flex-sdk/blob/3c40976e/frameworks/projects/apache/src/org/apache/flex/collections/ArrayList.as
> ----------------------------------------------------------------------
> diff --git a/frameworks/projects/apache/src/org/apache/flex/collections/ArrayList.as b/frameworks/projects/apache/src/org/apache/flex/collections/ArrayList.as
> index a1ea7b4..853f812 100644
> --- a/frameworks/projects/apache/src/org/apache/flex/collections/ArrayList.as
> +++ b/frameworks/projects/apache/src/org/apache/flex/collections/ArrayList.as
> @@ -1,839 +1,839 @@
> -////////////////////////////////////////////////////////////////////////////////
> -//
> -//  Licensed to the Apache Software Foundation (ASF) under one or more
> -//  contributor license agreements.  See the NOTICE file distributed with
> -//  this work for additional information regarding copyright ownership.
> -//  The ASF licenses this file to You under the Apache License, Version 2.0
> -//  (the "License"); you may not use this file except in compliance with
> -//  the License.  You may obtain a copy of the License at
> -//
> -//      http://www.apache.org/licenses/LICENSE-2.0
> -//
> -//  Unless required by applicable law or agreed to in writing, software
> -//  distributed under the License is distributed on an "AS IS" BASIS,
> -//  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
> -//  See the License for the specific language governing permissions and
> -//  limitations under the License.
> -//
> -////////////////////////////////////////////////////////////////////////////////
> -
> -package org.apache.flex.collections
> -{
> -
> -import flash.events.EventDispatcher;
> -import flash.events.IEventDispatcher;
> -import flash.utils.IDataInput;
> -import flash.utils.IDataOutput;
> -import flash.utils.IExternalizable;
> -import flash.utils.getQualifiedClassName;
> -
> -import mx.collections.ICollectionView;
> -import mx.collections.IList;
> -import mx.core.IPropertyChangeNotifier;
> -import mx.events.CollectionEvent;
> -import mx.events.CollectionEventKind;
> -import mx.events.PropertyChangeEvent;
> -import mx.events.PropertyChangeEventKind;
> -import mx.resources.IResourceManager;
> -import mx.resources.ResourceManager;
> -import mx.utils.ArrayUtil;
> -import mx.utils.UIDUtil;
> -
> -//--------------------------------------
> -//  Events
> -//--------------------------------------
> -
> -/**
> - *  Dispatched when the IList has been updated in some way.
> - *
> - *  @eventType mx.events.CollectionEvent.COLLECTION_CHANGE
> - *
> - *  @langversion 3.0
> - *  @playerversion Flash 9
> - *  @playerversion AIR 1.1
> - *  @productversion Flex 3
> - */
> -[Event(name="collectionChange", type="mx.events.CollectionEvent")]
> -
> -//--------------------------------------
> -//  Other metadata
> -//--------------------------------------
> -
> -[RemoteClass(alias="flex.messaging.io.ArrayList")]
> -
> -[ResourceBundle("collections")]
> -
> -[DefaultProperty("source")]
> -
> -/**
> - *  The ArrayList class is a simple implementation of IList
> - *  that uses a backing Array as the source of the data.
> - *
> - *  Items in the backing Array can be accessed and manipulated
> - *  using the methods and properties of the <code>IList</code>
> - *  interface. Operations on an ArrayList instance modify the
> - *  data source; for example, if you use the <code>removeItemAt()</code>
> - *  method on an ArrayList, you remove the item from the underlying
> - *  Array.
> - *
> - *  This base class will not throw ItemPendingErrors but it
> - *  is possible that a subclass might.
> - *
> - *  <pre>
> - *  &lt;mx:ArrayList
> - *  <b>Properties</b>
> - *  source="null"
> - *  /&gt;
> - *  </pre>
> - *
> - *  @langversion 3.0
> - *  @playerversion Flash 10
> - *  @playerversion AIR 1.5
> - *  @productversion Flex 4
> - */
> -public class ArrayList extends EventDispatcher
> -       implements IList, IExternalizable, IPropertyChangeNotifier
> -{
> -    //include "../core/Version.as";
> -
> -    //--------------------------------------------------------------------------
> -    //
> -    // Constructor
> -    //
> -    //--------------------------------------------------------------------------
> -
> -    /**
> -     *  Construct a new ArrayList using the specified array as its source.
> -     *  If no source is specified an empty array will be used.
> -     *
> -     *  @param source The Array to use as a source for the ArrayList.
> -     *
> -     *  @langversion 3.0
> -     *  @playerversion Flash 9
> -     *  @playerversion AIR 1.1
> -     *  @productversion Flex 3
> -     */
> -    public function ArrayList(source:Array = null)
> -    {
> -        super();
> -
> -        disableEvents();
> -        this.source = source;
> -        enableEvents();
> -    }
> -
> -    //--------------------------------------------------------------------------
> -    //
> -    // Variables
> -    //
> -    //--------------------------------------------------------------------------
> -
> -    /**
> -     *  @private
> -     *  Used for accessing localized Error messages.
> -     */
> -    private var resourceManager:IResourceManager =
> -        ResourceManager.getInstance();
> -
> -    /**
> -     *  @private
> -     *  Indicates if events should be dispatched.
> -     *  calls to enableEvents() and disableEvents() effect the value when == 0
> -     *  events should be dispatched.
> -     */
> -    private var _dispatchEvents:int = 0;
> -
> -    //--------------------------------------------------------------------------
> -    //
> -    // Properties
> -    //
> -    //--------------------------------------------------------------------------
> -
> -    //----------------------------------
> -    // length
> -    //----------------------------------
> -
> -    [Bindable("collectionChange")]
> -
> -    /**
> -     *  Get the number of items in the list.  An ArrayList should always
> -     *  know its length so it shouldn't return -1, though a subclass may
> -     *  override that behavior.
> -     *
> -     *  @return int representing the length of the source.
> -     *
> -     *  @langversion 3.0
> -     *  @playerversion Flash 9
> -     *  @playerversion AIR 1.1
> -     *  @productversion Flex 3
> -     */
> -    public function get length():int
> -    {
> -        if (source)
> -            return source.length;
> -        else
> -            return 0;
> -    }
> -
> -    //----------------------------------
> -    // source
> -    //----------------------------------
> -
> -    /**
> -     *  @private
> -     *  Storage for the source Array.
> -     */
> -    private var _source:Array;
> -
> -    /**
> -     *  The source array for this ArrayList.
> -     *  Any changes done through the IList interface will be reflected in the
> -     *  source array.
> -     *  If no source array was supplied the ArrayList will create one internally.
> -     *  Changes made directly to the underlying Array (e.g., calling
> -     *  <code>theList.source.pop()</code> will not cause <code>CollectionEvents</code>
> -     *  to be dispatched.
> -     *
> -     *  @return An Array that represents the underlying source.
> -     *
> -     *  @langversion 3.0
> -     *  @playerversion Flash 9
> -     *  @playerversion AIR 1.1
> -     *  @productversion Flex 3
> -     */
> -    public function get source():Array
> -    {
> -        return _source;
> -    }
> -
> -    public function set source(s:Array):void
> -    {
> -        var i:int;
> -        var len:int;
> -        if (_source && _source.length)
> -        {
> -            len = _source.length;
> -            for (i = 0; i < len; i++)
> -            {
> -                stopTrackUpdates(_source[i]);
> -            }
> -        }
> -        _source  = s ? s : [];
> -        len = _source.length;
> -        for (i = 0; i < len; i++)
> -        {
> -            startTrackUpdates(_source[i]);
> -        }
> -
> -        if (_dispatchEvents == 0)
> -        {
> -           var event:CollectionEvent =
> -            new CollectionEvent(CollectionEvent.COLLECTION_CHANGE);
> -           event.kind = CollectionEventKind.RESET;
> -           dispatchEvent(event);
> -        }
> -    }
> -
> -    //----------------------------------
> -    // uid -- mx.core.IPropertyChangeNotifier
> -    //----------------------------------
> -
> -    /**
> -     *  @private
> -     *  Storage for the UID String.
> -     */
> -    private var _uid:String;
> -
> -    /**
> -     *  Provides access to the unique id for this list.
> -     *
> -     *  @return String representing the internal uid.
> -     *
> -     *  @langversion 3.0
> -     *  @playerversion Flash 9
> -     *  @playerversion AIR 1.1
> -     *  @productversion Flex 3
> -     */
> -    public function get uid():String
> -    {
> -               if (!_uid) {
> -                       _uid = UIDUtil.createUID();
> -               }
> -        return _uid;
> -    }
> -
> -    public function set uid(value:String):void
> -    {
> -        _uid = value;
> -    }
> -
> -    //--------------------------------------------------------------------------
> -    //
> -    // Methods
> -    //
> -    //--------------------------------------------------------------------------
> -
> -    /**
> -     *  Get the item at the specified index.
> -     *
> -     *  @param  index the index in the list from which to retrieve the item
> -     *  @param  prefetch int indicating both the direction and amount of items
> -     *          to fetch during the request should the item not be local.
> -     *  @return the item at that index, null if there is none
> -     *  @throws ItemPendingError if the data for that index needs to be
> -     *                           loaded from a remote location
> -     *  @throws RangeError if the index &lt; 0 or index &gt;= length
> -     *
> -     *  @langversion 3.0
> -     *  @playerversion Flash 9
> -     *  @playerversion AIR 1.1
> -     *  @productversion Flex 3
> -     */
> -    public function getItemAt(index:int, prefetch:int = 0):Object
> -    {
> -        if (index < 0 || index >= length)
> -        {
> -            var message:String = resourceManager.getString(
> -                "collections", "outOfBounds", [ index ]);
> -            throw new RangeError(message);
> -        }
> -
> -        return source[index];
> -    }
> -
> -    /**
> -     *  Place the item at the specified index.
> -     *  If an item was already at that index the new item will replace it and it
> -     *  will be returned.
> -     *
> -     *  @param  item the new value for the index
> -     *  @param  index the index at which to place the item
> -     *  @return the item that was replaced, null if none
> -     *  @throws RangeError if index is less than 0 or greater than or equal to length
> -     *
> -     *  @langversion 3.0
> -     *  @playerversion Flash 9
> -     *  @playerversion AIR 1.1
> -     *  @productversion Flex 3
> -     */
> -    public function setItemAt(item:Object, index:int):Object
> -    {
> -        if (index < 0 || index >= length)
> -        {
> -            var message:String = resourceManager.getString(
> -                "collections", "outOfBounds", [ index ]);
> -            throw new RangeError(message);
> -        }
> -
> -        var oldItem:Object = source[index];
> -        source[index] = item;
> -        stopTrackUpdates(oldItem);
> -        startTrackUpdates(item);
> -
> -        //dispatch the appropriate events
> -        if (_dispatchEvents == 0)
> -        {
> -            var hasCollectionListener:Boolean =
> -                hasEventListener(CollectionEvent.COLLECTION_CHANGE);
> -            var hasPropertyListener:Boolean =
> -                hasEventListener(PropertyChangeEvent.PROPERTY_CHANGE);
> -            var updateInfo:PropertyChangeEvent;
> -
> -            if (hasCollectionListener || hasPropertyListener)
> -            {
> -                updateInfo = new PropertyChangeEvent(PropertyChangeEvent.PROPERTY_CHANGE);
> -                updateInfo.kind = PropertyChangeEventKind.UPDATE;
> -                updateInfo.oldValue = oldItem;
> -                updateInfo.newValue = item;
> -                updateInfo.property = index;
> -            }
> -
> -            if (hasCollectionListener)
> -            {
> -                var event:CollectionEvent =
> -                    new CollectionEvent(CollectionEvent.COLLECTION_CHANGE);
> -                event.kind = CollectionEventKind.REPLACE;
> -                event.location = index;
> -                event.items.push(updateInfo);
> -                dispatchEvent(event);
> -            }
> -
> -            if (hasPropertyListener)
> -            {
> -                dispatchEvent(updateInfo);
> -            }
> -        }
> -        return oldItem;
> -    }
> -
> -    /**
> -     *  Add the specified item to the end of the list.
> -     *  Equivalent to addItemAt(item, length);
> -     *
> -     *  @param item the item to add
> -     *
> -     *  @langversion 3.0
> -     *  @playerversion Flash 9
> -     *  @playerversion AIR 1.1
> -     *  @productversion Flex 3
> -     */
> -    public function addItem(item:Object):void
> -    {
> -        addItemAt(item, length);
> -    }
> -
> -    /**
> -     *  Add the item at the specified index.
> -     *  Any item that was after this index is moved out by one.
> -     *
> -     *  @param item the item to place at the index
> -     *  @param index the index at which to place the item
> -     *  @throws RangeError if index is less than 0 or greater than the length
> -     *
> -     *  @langversion 3.0
> -     *  @playerversion Flash 9
> -     *  @playerversion AIR 1.1
> -     *  @productversion Flex 3
> -     */
> -    public function addItemAt(item:Object, index:int):void
> -    {
> -        const spliceUpperBound:int = length;
> -
> -        if (index < spliceUpperBound && index > 0)
> -        {
> -            source.splice(index, 0, item);
> -        }
> -        else if (index == spliceUpperBound)
> -        {
> -            source.push(item);
> -        }
> -        else if (index == 0)
> -        {
> -            source.unshift(item);
> -        }
> -        else
> -        {
> -            var message:String = resourceManager.getString(
> -                "collections", "outOfBounds", [ index ]);
> -            throw new RangeError(message);
> -        }
> -
> -        startTrackUpdates(item);
> -        internalDispatchEvent(CollectionEventKind.ADD, item, index);
> -    }
> -
> -    /**
> -     *  @copy mx.collections.ListCollectionView#addAll()
> -     *
> -     *  @langversion 3.0
> -     *  @playerversion Flash 9
> -     *  @playerversion AIR 1.1
> -     *  @productversion Flex 3
> -     */
> -    public function addAll(addList:IList):void
> -    {
> -        addAllAt(addList, length);
> -    }
> -
> -    /**
> -     *  @copy mx.collections.ListCollectionView#addAllAt()
> -     *
> -     *  @langversion 3.0
> -     *  @playerversion Flash 9
> -     *  @playerversion AIR 1.1
> -     *  @productversion Flex 3
> -     */
> -    public function addAllAt(addList:IList, index:int):void
> -    {
> -        var length:int = addList.length;
> -        for (var i:int = 0; i < length; i++)
> -        {
> -            this.addItemAt(addList.getItemAt(i), i+index);
> -        }
> -    }
> -
> -    /**
> -     *  Return the index of the item if it is in the list such that
> -     *  getItemAt(index) == item.
> -     *  Note that in this implementation the search is linear and is therefore
> -     *  O(n).
> -     *
> -     *  @param item the item to find
> -     *  @return the index of the item, -1 if the item is not in the list.
> -     *
> -     *  @langversion 3.0
> -     *  @playerversion Flash 9
> -     *  @playerversion AIR 1.1
> -     *  @productversion Flex 3
> -     */
> -    public function getItemIndex(item:Object):int
> -    {
> -        return ArrayUtil.getItemIndex(item, source);
> -    }
> -
> -    /**
> -     *  Removes the specified item from this list, should it exist.
> -     *
> -     *  @param  item Object reference to the item that should be removed.
> -     *  @return Boolean indicating if the item was removed.
> -     *
> -     *  @langversion 3.0
> -     *  @playerversion Flash 9
> -     *  @playerversion AIR 1.1
> -     *  @productversion Flex 3
> -     */
> -    public function removeItem(item:Object):Boolean
> -    {
> -        var index:int = getItemIndex(item);
> -        var result:Boolean = index >= 0;
> -        if (result)
> -            removeItemAt(index);
> -
> -        return result;
> -    }
> -
> -    /**
> -     *  Remove the item at the specified index and return it.
> -     *  Any items that were after this index are now one index earlier.
> -     *
> -     *  @param index The index from which to remove the item.
> -     *  @return The item that was removed.
> -     *  @throws RangeError if index &lt; 0 or index &gt;= length.
> -     *
> -     *  @langversion 3.0
> -     *  @playerversion Flash 9
> -     *  @playerversion AIR 1.1
> -     *  @productversion Flex 3
> -     */
> -    public function removeItemAt(index:int):Object
> -    {
> -        const spliceUpperBound:int = length - 1;
> -        var removed:Object;
> -
> -        if (index > 0 && index < spliceUpperBound)
> -        {
> -            removed = source.splice(index, 1)[0];
> -        }
> -        else if (index == spliceUpperBound)
> -        {
> -            removed = source.pop();
> -        }
> -        else if (index == 0)
> -        {
> -            removed = source.shift();
> -        }
> -        else
> -        {
> -            var message:String = resourceManager.getString(
> -                "collections", "outOfBounds", [ index ]);
> -            throw new RangeError(message);
> -        }
> -
> -        var removed:Object = source.splice(index, 1)[0];
> -        stopTrackUpdates(removed);
> -        internalDispatchEvent(CollectionEventKind.REMOVE, removed, index);
> -        return removed;
> -    }
> -
> -    /**
> -     *  Remove all items from the list.
> -     *
> -     *  @langversion 3.0
> -     *  @playerversion Flash 9
> -     *  @playerversion AIR 1.1
> -     *  @productversion Flex 3
> -     */
> -    public function removeAll():void
> -    {
> -        if (length > 0)
> -        {
> -            var len:int = length;
> -            for (var i:int = 0; i < len; i++)
> -            {
> -                stopTrackUpdates(source[i]);
> -            }
> -
> -            source.splice(0, length);
> -            internalDispatchEvent(CollectionEventKind.RESET);
> -        }
> -    }
> -
> -    /**
> -     *  Notify the view that an item has been updated.
> -     *  This is useful if the contents of the view do not implement
> -     *  <code>IEventDispatcher</code>.
> -     *  If a property is specified the view may be able to optimize its
> -     *  notification mechanism.
> -     *  Otherwise it may choose to simply refresh the whole view.
> -     *
> -     *  @param item The item within the view that was updated.
> -     *
> -     *  @param property A String, QName, or int
> -     *  specifying the property that was updated.
> -     *
> -     *  @param oldValue The old value of that property.
> -     *  (If property was null, this can be the old value of the item.)
> -     *
> -     *  @param newValue The new value of that property.
> -     *  (If property was null, there's no need to specify this
> -     *  as the item is assumed to be the new value.)
> -     *
> -     *  @see mx.events.CollectionEvent
> -     *  @see mx.core.IPropertyChangeNotifier
> -     *  @see mx.events.PropertyChangeEvent
> -     *
> -     *  @langversion 3.0
> -     *  @playerversion Flash 9
> -     *  @playerversion AIR 1.1
> -     *  @productversion Flex 3
> -     */
> -     public function itemUpdated(item:Object, property:Object = null,
> -                                 oldValue:Object = null,
> -                                 newValue:Object = null):void
> -    {
> -        var event:PropertyChangeEvent =
> -            new PropertyChangeEvent(PropertyChangeEvent.PROPERTY_CHANGE);
> -
> -        event.kind = PropertyChangeEventKind.UPDATE;
> -        event.source = item;
> -        event.property = property;
> -        event.oldValue = oldValue;
> -        event.newValue = newValue;
> -
> -               //This handler was intended to handle events from child objects, not to be called directly
> -               //itemUpdateHandler(event);
> -
> -               internalDispatchEvent(CollectionEventKind.UPDATE, event);
> -
> -               // need to dispatch object event now
> -               if (_dispatchEvents == 0 && hasEventListener(PropertyChangeEvent.PROPERTY_CHANGE))
> -               {
> -                       dispatchPropertyChangeEventClone( event, item );
> -               }
> -    }
> -
> -    /**
> -     *  Return an Array that is populated in the same order as the IList
> -     *  implementation.
> -     *
> -     *  @return An Array populated in the same order as the IList
> -     *  implementation.
> -     *
> -     *  @throws ItemPendingError if the data is not yet completely loaded
> -     *  from a remote location
> -     *
> -     *  @langversion 3.0
> -     *  @playerversion Flash 9
> -     *  @playerversion AIR 1.1
> -     *  @productversion Flex 3
> -     */
> -    public function toArray():Array
> -    {
> -        return source.concat();
> -    }
> -
> -    /**
> -     *  Ensures that only the source property is seralized.
> -     *  @private
> -     */
> -    public function readExternal(input:IDataInput):void
> -    {
> -        source = input.readObject();
> -    }
> -
> -    /**
> -     *  Ensures that only the source property is serialized.
> -     *  @private
> -     */
> -    public function writeExternal(output:IDataOutput):void
> -    {
> -        output.writeObject(_source);
> -    }
> -
> -    /**
> -     *  Pretty prints the contents of this ArrayList to a string and returns it.
> -     *
> -     *  @return A String containing the contents of the ArrayList.
> -     *
> -     *  @langversion 3.0
> -     *  @playerversion Flash 9
> -     *  @playerversion AIR 1.1
> -     *  @productversion Flex 3
> -     */
> -    override public function toString():String
> -    {
> -        if (source)
> -            return source.toString();
> -        else
> -            return getQualifiedClassName(this);
> -    }
> -
> -    //--------------------------------------------------------------------------
> -    //
> -    // Internal Methods
> -    //
> -    //--------------------------------------------------------------------------
> -
> -       /**
> -        *  Dispatches a PropertyChangeEvent clone either from a child object whose event needs to be redispatched
> -        *  or when a PropertyChangeEvent is faked inside of this class for the purposes of informing the view
> -        *  of an update to underlying data.
> -        *
> -        *  @param event The PropertyChangeEvent to be cloned and dispatched
> -        *  @param item The item within the view that was updated.
> -        *
> -        *  @see mx.core.IPropertyChangeNotifier
> -        *  @see mx.events.PropertyChangeEvent
> -        */
> -
> -       private function dispatchPropertyChangeEventClone( event:PropertyChangeEvent, item:Object ):void {
> -               var objEvent:PropertyChangeEvent = PropertyChangeEvent(event.clone());
> -
> -               var index:int = getItemIndex( item );
> -               objEvent.property = index.toString() + "." + event.property;
> -               dispatchEvent(objEvent);
> -       }
> -
> -    /**
> -     *  Enables event dispatch for this list.
> -     *
> -     *  @langversion 3.0
> -     *  @playerversion Flash 9
> -     *  @playerversion AIR 1.1
> -     *  @productversion Flex 3
> -     */
> -    private function enableEvents():void
> -    {
> -        _dispatchEvents++;
> -        if (_dispatchEvents > 0)
> -            _dispatchEvents = 0;
> -    }
> -
> -    /**
> -     *  Disables event dispatch for this list.
> -     *  To re-enable events call enableEvents(), enableEvents() must be called
> -     *  a matching number of times as disableEvents().
> -     *
> -     *  @langversion 3.0
> -     *  @playerversion Flash 9
> -     *  @playerversion AIR 1.1
> -     *  @productversion Flex 3
> -     */
> -    private function disableEvents():void
> -    {
> -        _dispatchEvents--;
> -    }
> -
> -    /**
> -     *  Dispatches a collection event with the specified information.
> -     *
> -     *  @param kind String indicates what the kind property of the event should be
> -     *  @param item Object reference to the item that was added or removed
> -     *  @param location int indicating where in the source the item was added.
> -     *
> -     *  @langversion 3.0
> -     *  @playerversion Flash 9
> -     *  @playerversion AIR 1.1
> -     *  @productversion Flex 3
> -     */
> -    private function internalDispatchEvent(kind:String, item:Object = null, location:int = -1):void
> -    {
> -        if (_dispatchEvents == 0)
> -        {
> -            if (hasEventListener(CollectionEvent.COLLECTION_CHANGE))
> -            {
> -                var event:CollectionEvent =
> -                    new CollectionEvent(CollectionEvent.COLLECTION_CHANGE);
> -                event.kind = kind;
> -                event.items.push(item);
> -                event.location = location;
> -                dispatchEvent(event);
> -            }
> -
> -            // now dispatch a complementary PropertyChangeEvent
> -            if (hasEventListener(PropertyChangeEvent.PROPERTY_CHANGE) &&
> -               (kind == CollectionEventKind.ADD || kind == CollectionEventKind.REMOVE))
> -            {
> -                var objEvent:PropertyChangeEvent =
> -                    new PropertyChangeEvent(PropertyChangeEvent.PROPERTY_CHANGE);
> -                objEvent.property = location;
> -                if (kind == CollectionEventKind.ADD)
> -                    objEvent.newValue = item;
> -                else
> -                    objEvent.oldValue = item;
> -                dispatchEvent(objEvent);
> -            }
> -        }
> -    }
> -
> -    /**
> -     *  Called when any of the contained items in the list dispatch an
> -     *  ObjectChange event.
> -     *  Wraps it in a <code>CollectionEventKind.UPDATE</code> object.
> -     *
> -     *  @param event The event object for the ObjectChange event.
> -     *
> -     *  @langversion 3.0
> -     *  @playerversion Flash 9
> -     *  @playerversion AIR 1.1
> -     *  @productversion Flex 3
> -     */
> -    protected function itemUpdateHandler(event:PropertyChangeEvent):void
> -    {
> -        internalDispatchEvent(CollectionEventKind.UPDATE, event);
> -
> -               // need to dispatch object event now
> -               if (_dispatchEvents == 0 && hasEventListener(PropertyChangeEvent.PROPERTY_CHANGE))
> -               {
> -                       dispatchPropertyChangeEventClone( event, event.target );
> -               }
> -    }
> -
> -    /**
> -     *  If the item is an IEventDispatcher, watch it for updates.
> -     *  This method is called by the <code>addItemAt()</code> method,
> -     *  and when the source is initially assigned.
> -     *
> -     *  @param item The item passed to the <code>addItemAt()</code> method.
> -     *
> -     *  @langversion 3.0
> -     *  @playerversion Flash 9
> -     *  @playerversion AIR 1.1
> -     *  @productversion Flex 3
> -     */
> -    protected function startTrackUpdates(item:Object):void
> -    {
> -        if (item && (item is IEventDispatcher))
> -        {
> -            IEventDispatcher(item).addEventListener(
> -                                        PropertyChangeEvent.PROPERTY_CHANGE,
> -                                        itemUpdateHandler, false, 0, true);
> -        }
> -    }
> -
> -    /**
> -     *  If the item is an IEventDispatcher, stop watching it for updates.
> -     *  This method is called by the <code>removeItemAt()</code> and
> -     *  <code>removeAll()</code> methods, and before a new
> -     *  source is assigned.
> -     *
> -     *  @param item The item passed to the <code>removeItemAt()</code> method.
> -     *
> -     *  @langversion 3.0
> -     *  @playerversion Flash 9
> -     *  @playerversion AIR 1.1
> -     *  @productversion Flex 3
> -     */
> -    protected function stopTrackUpdates(item:Object):void
> -    {
> -        if (item && item is IEventDispatcher)
> -        {
> -            IEventDispatcher(item).removeEventListener(
> -                                        PropertyChangeEvent.PROPERTY_CHANGE,
> -                                        itemUpdateHandler);
> -        }
> -    }
> -
> -}
> -
> -}
> +////////////////////////////////////////////////////////////////////////////////
> +//
> +//  Licensed to the Apache Software Foundation (ASF) under one or more
> +//  contributor license agreements.  See the NOTICE file distributed with
> +//  this work for additional information regarding copyright ownership.
> +//  The ASF licenses this file to You under the Apache License, Version 2.0
> +//  (the "License"); you may not use this file except in compliance with
> +//  the License.  You may obtain a copy of the License at
> +//
> +//      http://www.apache.org/licenses/LICENSE-2.0
> +//
> +//  Unless required by applicable law or agreed to in writing, software
> +//  distributed under the License is distributed on an "AS IS" BASIS,
> +//  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
> +//  See the License for the specific language governing permissions and
> +//  limitations under the License.
> +//
> +////////////////////////////////////////////////////////////////////////////////
> +
> +package org.apache.flex.collections
> +{
> +
> +import flash.events.EventDispatcher;
> +import flash.events.IEventDispatcher;
> +import flash.utils.IDataInput;
> +import flash.utils.IDataOutput;
> +import flash.utils.IExternalizable;
> +import flash.utils.getQualifiedClassName;
> +
> +import mx.collections.ICollectionView;
> +import mx.collections.IList;
> +import mx.core.IPropertyChangeNotifier;
> +import mx.events.CollectionEvent;
> +import mx.events.CollectionEventKind;
> +import mx.events.PropertyChangeEvent;
> +import mx.events.PropertyChangeEventKind;
> +import mx.resources.IResourceManager;
> +import mx.resources.ResourceManager;
> +import mx.utils.ArrayUtil;
> +import mx.utils.UIDUtil;
> +
> +//--------------------------------------
> +//  Events
> +//--------------------------------------
> +
> +/**
> + *  Dispatched when the IList has been updated in some way.
> + *
> + *  @eventType mx.events.CollectionEvent.COLLECTION_CHANGE
> + *
> + *  @langversion 3.0
> + *  @playerversion Flash 9
> + *  @playerversion AIR 1.1
> + *  @productversion Flex 3
> + */
> +[Event(name="collectionChange", type="mx.events.CollectionEvent")]
> +
> +//--------------------------------------
> +//  Other metadata
> +//--------------------------------------
> +
> +[RemoteClass(alias="flex.messaging.io.ArrayList")]
> +
> +[ResourceBundle("collections")]
> +
> +[DefaultProperty("source")]
> +
> +/**
> + *  The ArrayList class is a simple implementation of IList
> + *  that uses a backing Array as the source of the data.
> + *
> + *  Items in the backing Array can be accessed and manipulated
> + *  using the methods and properties of the <code>IList</code>
> + *  interface. Operations on an ArrayList instance modify the
> + *  data source; for example, if you use the <code>removeItemAt()</code>
> + *  method on an ArrayList, you remove the item from the underlying
> + *  Array.
> + *
> + *  This base class will not throw ItemPendingErrors but it
> + *  is possible that a subclass might.
> + *
> + *  <pre>
> + *  &lt;mx:ArrayList
> + *  <b>Properties</b>
> + *  source="null"
> + *  /&gt;
> + *  </pre>
> + *
> + *  @langversion 3.0
> + *  @playerversion Flash 10
> + *  @playerversion AIR 1.5
> + *  @productversion Flex 4
> + */
> +public class ArrayList extends EventDispatcher
> +       implements IList, IExternalizable, IPropertyChangeNotifier
> +{
> +    //include "../core/Version.as";
> +
> +    //--------------------------------------------------------------------------
> +    //
> +    // Constructor
> +    //
> +    //--------------------------------------------------------------------------
> +
> +    /**
> +     *  Construct a new ArrayList using the specified array as its source.
> +     *  If no source is specified an empty array will be used.
> +     *
> +     *  @param source The Array to use as a source for the ArrayList.
> +     *
> +     *  @langversion 3.0
> +     *  @playerversion Flash 9
> +     *  @playerversion AIR 1.1
> +     *  @productversion Flex 3
> +     */
> +    public function ArrayList(source:Array = null)
> +    {
> +        super();
> +
> +        disableEvents();
> +        this.source = source;
> +        enableEvents();
> +    }
> +
> +    //--------------------------------------------------------------------------
> +    //
> +    // Variables
> +    //
> +    //--------------------------------------------------------------------------
> +
> +    /**
> +     *  @private
> +     *  Used for accessing localized Error messages.
> +     */
> +    private var resourceManager:IResourceManager =
> +        ResourceManager.getInstance();
> +
> +    /**
> +     *  @private
> +     *  Indicates if events should be dispatched.
> +     *  calls to enableEvents() and disableEvents() effect the value when == 0
> +     *  events should be dispatched.
> +     */
> +    private var _dispatchEvents:int = 0;
> +
> +    //--------------------------------------------------------------------------
> +    //
> +    // Properties
> +    //
> +    //--------------------------------------------------------------------------
> +
> +    //----------------------------------
> +    // length
> +    //----------------------------------
> +
> +    [Bindable("collectionChange")]
> +
> +    /**
> +     *  Get the number of items in the list.  An ArrayList should always
> +     *  know its length so it shouldn't return -1, though a subclass may
> +     *  override that behavior.
> +     *
> +     *  @return int representing the length of the source.
> +     *
> +     *  @langversion 3.0
> +     *  @playerversion Flash 9
> +     *  @playerversion AIR 1.1
> +     *  @productversion Flex 3
> +     */
> +    public function get length():int
> +    {
> +        if (source)
> +            return source.length;
> +        else
> +            return 0;
> +    }
> +
> +    //----------------------------------
> +    // source
> +    //----------------------------------
> +
> +    /**
> +     *  @private
> +     *  Storage for the source Array.
> +     */
> +    private var _source:Array;
> +
> +    /**
> +     *  The source array for this ArrayList.
> +     *  Any changes done through the IList interface will be reflected in the
> +     *  source array.
> +     *  If no source array was supplied the ArrayList will create one internally.
> +     *  Changes made directly to the underlying Array (e.g., calling
> +     *  <code>theList.source.pop()</code> will not cause <code>CollectionEvents</code>
> +     *  to be dispatched.
> +     *
> +     *  @return An Array that represents the underlying source.
> +     *
> +     *  @langversion 3.0
> +     *  @playerversion Flash 9
> +     *  @playerversion AIR 1.1
> +     *  @productversion Flex 3
> +     */
> +    public function get source():Array
> +    {
> +        return _source;
> +    }
> +
> +    public function set source(s:Array):void
> +    {
> +        var i:int;
> +        var len:int;
> +        if (_source && _source.length)
> +        {
> +            len = _source.length;
> +            for (i = 0; i < len; i++)
> +            {
> +                stopTrackUpdates(_source[i]);
> +            }
> +        }
> +        _source  = s ? s : [];
> +        len = _source.length;
> +        for (i = 0; i < len; i++)
> +        {
> +            startTrackUpdates(_source[i]);
> +        }
> +
> +        if (_dispatchEvents == 0)
> +        {
> +           var event:CollectionEvent =
> +            new CollectionEvent(CollectionEvent.COLLECTION_CHANGE);
> +           event.kind = CollectionEventKind.RESET;
> +           dispatchEvent(event);
> +        }
> +    }
> +
> +    //----------------------------------
> +    // uid -- mx.core.IPropertyChangeNotifier
> +    //----------------------------------
> +
> +    /**
> +     *  @private
> +     *  Storage for the UID String.
> +     */
> +    private var _uid:String;
> +
> +    /**
> +     *  Provides access to the unique id for this list.
> +     *
> +     *  @return String representing the internal uid.
> +     *
> +     *  @langversion 3.0
> +     *  @playerversion Flash 9
> +     *  @playerversion AIR 1.1
> +     *  @productversion Flex 3
> +     */
> +    public function get uid():String
> +    {
> +               if (!_uid) {
> +                       _uid = UIDUtil.createUID();
> +               }
> +        return _uid;
> +    }
> +
> +    public function set uid(value:String):void
> +    {
> +        _uid = value;
> +    }
> +
> +    //--------------------------------------------------------------------------
> +    //
> +    // Methods
> +    //
> +    //--------------------------------------------------------------------------
> +
> +    /**
> +     *  Get the item at the specified index.
> +     *
> +     *  @param  index the index in the list from which to retrieve the item
> +     *  @param  prefetch int indicating both the direction and amount of items
> +     *          to fetch during the request should the item not be local.
> +     *  @return the item at that index, null if there is none
> +     *  @throws ItemPendingError if the data for that index needs to be
> +     *                           loaded from a remote location
> +     *  @throws RangeError if the index &lt; 0 or index &gt;= length
> +     *
> +     *  @langversion 3.0
> +     *  @playerversion Flash 9
> +     *  @playerversion AIR 1.1
> +     *  @productversion Flex 3
> +     */
> +    public function getItemAt(index:int, prefetch:int = 0):Object
> +    {
> +        if (index < 0 || index >= length)
> +        {
> +            var message:String = resourceManager.getString(
> +                "collections", "outOfBounds", [ index ]);
> +            throw new RangeError(message);
> +        }
> +
> +        return source[index];
> +    }
> +
> +    /**
> +     *  Place the item at the specified index.
> +     *  If an item was already at that index the new item will replace it and it
> +     *  will be returned.
> +     *
> +     *  @param  item the new value for the index
> +     *  @param  index the index at which to place the item
> +     *  @return the item that was replaced, null if none
> +     *  @throws RangeError if index is less than 0 or greater than or equal to length
> +     *
> +     *  @langversion 3.0
> +     *  @playerversion Flash 9
> +     *  @playerversion AIR 1.1
> +     *  @productversion Flex 3
> +     */
> +    public function setItemAt(item:Object, index:int):Object
> +    {
> +        if (index < 0 || index >= length)
> +        {
> +            var message:String = resourceManager.getString(
> +                "collections", "outOfBounds", [ index ]);
> +            throw new RangeError(message);
> +        }
> +
> +        var oldItem:Object = source[index];
> +        source[index] = item;
> +        stopTrackUpdates(oldItem);
> +        startTrackUpdates(item);
> +
> +        //dispatch the appropriate events
> +        if (_dispatchEvents == 0)
> +        {
> +            var hasCollectionListener:Boolean =
> +                hasEventListener(CollectionEvent.COLLECTION_CHANGE);
> +            var hasPropertyListener:Boolean =
> +                hasEventListener(PropertyChangeEvent.PROPERTY_CHANGE);
> +            var updateInfo:PropertyChangeEvent;
> +
> +            if (hasCollectionListener || hasPropertyListener)
> +            {
> +                updateInfo = new PropertyChangeEvent(PropertyChangeEvent.PROPERTY_CHANGE);
> +                updateInfo.kind = PropertyChangeEventKind.UPDATE;
> +                updateInfo.oldValue = oldItem;
> +                updateInfo.newValue = item;
> +                updateInfo.property = index;
> +            }
> +
> +            if (hasCollectionListener)
> +            {
> +                var event:CollectionEvent =
> +                    new CollectionEvent(CollectionEvent.COLLECTION_CHANGE);
> +                event.kind = CollectionEventKind.REPLACE;
> +                event.location = index;
> +                event.items.push(updateInfo);
> +                dispatchEvent(event);
> +            }
> +
> +            if (hasPropertyListener)
> +            {
> +                dispatchEvent(updateInfo);
> +            }
> +        }
> +        return oldItem;
> +    }
> +
> +    /**
> +     *  Add the specified item to the end of the list.
> +     *  Equivalent to addItemAt(item, length);
> +     *
> +     *  @param item the item to add
> +     *
> +     *  @langversion 3.0
> +     *  @playerversion Flash 9
> +     *  @playerversion AIR 1.1
> +     *  @productversion Flex 3
> +     */
> +    public function addItem(item:Object):void
> +    {
> +        addItemAt(item, length);
> +    }
> +
> +    /**
> +     *  Add the item at the specified index.
> +     *  Any item that was after this index is moved out by one.
> +     *
> +     *  @param item the item to place at the index
> +     *  @param index the index at which to place the item
> +     *  @throws RangeError if index is less than 0 or greater than the length
> +     *
> +     *  @langversion 3.0
> +     *  @playerversion Flash 9
> +     *  @playerversion AIR 1.1
> +     *  @productversion Flex 3
> +     */
> +    public function addItemAt(item:Object, index:int):void
> +    {
> +        const spliceUpperBound:int = length;
> +
> +        if (index < spliceUpperBound && index > 0)
> +        {
> +            source.splice(index, 0, item);
> +        }
> +        else if (index == spliceUpperBound)
> +        {
> +            source.push(item);
> +        }
> +        else if (index == 0)
> +        {
> +            source.unshift(item);
> +        }
> +        else
> +        {
> +            var message:String = resourceManager.getString(
> +                "collections", "outOfBounds", [ index ]);
> +            throw new RangeError(message);
> +        }
> +
> +        startTrackUpdates(item);
> +        internalDispatchEvent(CollectionEventKind.ADD, item, index);
> +    }
> +
> +    /**
> +     *  @copy mx.collections.ListCollectionView#addAll()
> +     *
> +     *  @langversion 3.0
> +     *  @playerversion Flash 9
> +     *  @playerversion AIR 1.1
> +     *  @productversion Flex 3
> +     */
> +    public function addAll(addList:IList):void
> +    {
> +        addAllAt(addList, length);
> +    }
> +
> +    /**
> +     *  @copy mx.collections.ListCollectionView#addAllAt()
> +     *
> +     *  @langversion 3.0
> +     *  @playerversion Flash 9
> +     *  @playerversion AIR 1.1
> +     *  @productversion Flex 3
> +     */
> +    public function addAllAt(addList:IList, index:int):void
> +    {
> +        var length:int = addList.length;
> +        for (var i:int = 0; i < length; i++)
> +        {
> +            this.addItemAt(addList.getItemAt(i), i+index);
> +        }
> +    }
> +
> +    /**
> +     *  Return the index of the item if it is in the list such that
> +     *  getItemAt(index) == item.
> +     *  Note that in this implementation the search is linear and is therefore
> +     *  O(n).
> +     *
> +     *  @param item the item to find
> +     *  @return the index of the item, -1 if the item is not in the list.
> +     *
> +     *  @langversion 3.0
> +     *  @playerversion Flash 9
> +     *  @playerversion AIR 1.1
> +     *  @productversion Flex 3
> +     */
> +    public function getItemIndex(item:Object):int
> +    {
> +        return ArrayUtil.getItemIndex(item, source);
> +    }
> +
> +    /**
> +     *  Removes the specified item from this list, should it exist.
> +     *
> +     *  @param  item Object reference to the item that should be removed.
> +     *  @return Boolean indicating if the item was removed.
> +     *
> +     *  @langversion 3.0
> +     *  @playerversion Flash 9
> +     *  @playerversion AIR 1.1
> +     *  @productversion Flex 3
> +     */
> +    public function removeItem(item:Object):Boolean
> +    {
> +        var index:int = getItemIndex(item);
> +        var result:Boolean = index >= 0;
> +        if (result)
> +            removeItemAt(index);
> +
> +        return result;
> +    }
> +
> +    /**
> +     *  Remove the item at the specified index and return it.
> +     *  Any items that were after this index are now one index earlier.
> +     *
> +     *  @param index The index from which to remove the item.
> +     *  @return The item that was removed.
> +     *  @throws RangeError if index &lt; 0 or index &gt;= length.
> +     *
> +     *  @langversion 3.0
> +     *  @playerversion Flash 9
> +     *  @playerversion AIR 1.1
> +     *  @productversion Flex 3
> +     */
> +    public function removeItemAt(index:int):Object
> +    {
> +        const spliceUpperBound:int = length - 1;
> +        var removed:Object;
> +
> +        if (index > 0 && index < spliceUpperBound)
> +        {
> +            removed = source.splice(index, 1)[0];
> +        }
> +        else if (index == spliceUpperBound)
> +        {
> +            removed = source.pop();
> +        }
> +        else if (index == 0)
> +        {
> +            removed = source.shift();
> +        }
> +        else
> +        {
> +            var message:String = resourceManager.getString(
> +                "collections", "outOfBounds", [ index ]);
> +            throw new RangeError(message);
> +        }
> +
> +        removed = source.splice(index, 1)[0];
> +        stopTrackUpdates(removed);
> +        internalDispatchEvent(CollectionEventKind.REMOVE, removed, index);
> +        return removed;
> +    }
> +
> +    /**
> +     *  Remove all items from the list.
> +     *
> +     *  @langversion 3.0
> +     *  @playerversion Flash 9
> +     *  @playerversion AIR 1.1
> +     *  @productversion Flex 3
> +     */
> +    public function removeAll():void
> +    {
> +        if (length > 0)
> +        {
> +            var len:int = length;
> +            for (var i:int = 0; i < len; i++)
> +            {
> +                stopTrackUpdates(source[i]);
> +            }
> +
> +            source.splice(0, length);
> +            internalDispatchEvent(CollectionEventKind.RESET);
> +        }
> +    }
> +
> +    /**
> +     *  Notify the view that an item has been updated.
> +     *  This is useful if the contents of the view do not implement
> +     *  <code>IEventDispatcher</code>.
> +     *  If a property is specified the view may be able to optimize its
> +     *  notification mechanism.
> +     *  Otherwise it may choose to simply refresh the whole view.
> +     *
> +     *  @param item The item within the view that was updated.
> +     *
> +     *  @param property A String, QName, or int
> +     *  specifying the property that was updated.
> +     *
> +     *  @param oldValue The old value of that property.
> +     *  (If property was null, this can be the old value of the item.)
> +     *
> +     *  @param newValue The new value of that property.
> +     *  (If property was null, there's no need to specify this
> +     *  as the item is assumed to be the new value.)
> +     *
> +     *  @see mx.events.CollectionEvent
> +     *  @see mx.core.IPropertyChangeNotifier
> +     *  @see mx.events.PropertyChangeEvent
> +     *
> +     *  @langversion 3.0
> +     *  @playerversion Flash 9
> +     *  @playerversion AIR 1.1
> +     *  @productversion Flex 3
> +     */
> +     public function itemUpdated(item:Object, property:Object = null,
> +                                 oldValue:Object = null,
> +                                 newValue:Object = null):void
> +    {
> +        var event:PropertyChangeEvent =
> +            new PropertyChangeEvent(PropertyChangeEvent.PROPERTY_CHANGE);
> +
> +        event.kind = PropertyChangeEventKind.UPDATE;
> +        event.source = item;
> +        event.property = property;
> +        event.oldValue = oldValue;
> +        event.newValue = newValue;
> +
> +               //This handler was intended to handle events from child objects, not to be called directly
> +               //itemUpdateHandler(event);
> +
> +               internalDispatchEvent(CollectionEventKind.UPDATE, event);
> +
> +               // need to dispatch object event now
> +               if (_dispatchEvents == 0 && hasEventListener(PropertyChangeEvent.PROPERTY_CHANGE))
> +               {
> +                       dispatchPropertyChangeEventClone( event, item );
> +               }
> +    }
> +
> +    /**
> +     *  Return an Array that is populated in the same order as the IList
> +     *  implementation.
> +     *
> +     *  @return An Array populated in the same order as the IList
> +     *  implementation.
> +     *
> +     *  @throws ItemPendingError if the data is not yet completely loaded
> +     *  from a remote location
> +     *
> +     *  @langversion 3.0
> +     *  @playerversion Flash 9
> +     *  @playerversion AIR 1.1
> +     *  @productversion Flex 3
> +     */
> +    public function toArray():Array
> +    {
> +        return source.concat();
> +    }
> +
> +    /**
> +     *  Ensures that only the source property is seralized.
> +     *  @private
> +     */
> +    public function readExternal(input:IDataInput):void
> +    {
> +        source = input.readObject();
> +    }
> +
> +    /**
> +     *  Ensures that only the source property is serialized.
> +     *  @private
> +     */
> +    public function writeExternal(output:IDataOutput):void
> +    {
> +        output.writeObject(_source);
> +    }
> +
> +    /**
> +     *  Pretty prints the contents of this ArrayList to a string and returns it.
> +     *
> +     *  @return A String containing the contents of the ArrayList.
> +     *
> +     *  @langversion 3.0
> +     *  @playerversion Flash 9
> +     *  @playerversion AIR 1.1
> +     *  @productversion Flex 3
> +     */
> +    override public function toString():String
> +    {
> +        if (source)
> +            return source.toString();
> +        else
> +            return getQualifiedClassName(this);
> +    }
> +
> +    //--------------------------------------------------------------------------
> +    //
> +    // Internal Methods
> +    //
> +    //--------------------------------------------------------------------------
> +
> +       /**
> +        *  Dispatches a PropertyChangeEvent clone either from a child object whose event needs to be redispatched
> +        *  or when a PropertyChangeEvent is faked inside of this class for the purposes of informing the view
> +        *  of an update to underlying data.
> +        *
> +        *  @param event The PropertyChangeEvent to be cloned and dispatched
> +        *  @param item The item within the view that was updated.
> +        *
> +        *  @see mx.core.IPropertyChangeNotifier
> +        *  @see mx.events.PropertyChangeEvent
> +        */
> +
> +       private function dispatchPropertyChangeEventClone( event:PropertyChangeEvent, item:Object ):void {
> +               var objEvent:PropertyChangeEvent = PropertyChangeEvent(event.clone());
> +
> +               var index:int = getItemIndex( item );
> +               objEvent.property = index.toString() + "." + event.property;
> +               dispatchEvent(objEvent);
> +       }
> +
> +    /**
> +     *  Enables event dispatch for this list.
> +     *
> +     *  @langversion 3.0
> +     *  @playerversion Flash 9
> +     *  @playerversion AIR 1.1
> +     *  @productversion Flex 3
> +     */
> +    private function enableEvents():void
> +    {
> +        _dispatchEvents++;
> +        if (_dispatchEvents > 0)
> +            _dispatchEvents = 0;
> +    }
> +
> +    /**
> +     *  Disables event dispatch for this list.
> +     *  To re-enable events call enableEvents(), enableEvents() must be called
> +     *  a matching number of times as disableEvents().
> +     *
> +     *  @langversion 3.0
> +     *  @playerversion Flash 9
> +     *  @playerversion AIR 1.1
> +     *  @productversion Flex 3
> +     */
> +    private function disableEvents():void
> +    {
> +        _dispatchEvents--;
> +    }
> +
> +    /**
> +     *  Dispatches a collection event with the specified information.
> +     *
> +     *  @param kind String indicates what the kind property of the event should be
> +     *  @param item Object reference to the item that was added or removed
> +     *  @param location int indicating where in the source the item was added.
> +     *
> +     *  @langversion 3.0
> +     *  @playerversion Flash 9
> +     *  @playerversion AIR 1.1
> +     *  @productversion Flex 3
> +     */
> +    private function internalDispatchEvent(kind:String, item:Object = null, location:int = -1):void
> +    {
> +        if (_dispatchEvents == 0)
> +        {
> +            if (hasEventListener(CollectionEvent.COLLECTION_CHANGE))
> +            {
> +                var event:CollectionEvent =
> +                    new CollectionEvent(CollectionEvent.COLLECTION_CHANGE);
> +                event.kind = kind;
> +                event.items.push(item);
> +                event.location = location;
> +                dispatchEvent(event);
> +            }
> +
> +            // now dispatch a complementary PropertyChangeEvent
> +            if (hasEventListener(PropertyChangeEvent.PROPERTY_CHANGE) &&
> +               (kind == CollectionEventKind.ADD || kind == CollectionEventKind.REMOVE))
> +            {
> +                var objEvent:PropertyChangeEvent =
> +                    new PropertyChangeEvent(PropertyChangeEvent.PROPERTY_CHANGE);
> +                objEvent.property = location;
> +                if (kind == CollectionEventKind.ADD)
> +                    objEvent.newValue = item;
> +                else
> +                    objEvent.oldValue = item;
> +                dispatchEvent(objEvent);
> +            }
> +        }
> +    }
> +
> +    /**
> +     *  Called when any of the contained items in the list dispatch an
> +     *  ObjectChange event.
> +     *  Wraps it in a <code>CollectionEventKind.UPDATE</code> object.
> +     *
> +     *  @param event The event object for the ObjectChange event.
> +     *
> +     *  @langversion 3.0
> +     *  @playerversion Flash 9
> +     *  @playerversion AIR 1.1
> +     *  @productversion Flex 3
> +     */
> +    protected function itemUpdateHandler(event:PropertyChangeEvent):void
> +    {
> +        internalDispatchEvent(CollectionEventKind.UPDATE, event);
> +
> +               // need to dispatch object event now
> +               if (_dispatchEvents == 0 && hasEventListener(PropertyChangeEvent.PROPERTY_CHANGE))
> +               {
> +                       dispatchPropertyChangeEventClone( event, event.target );
> +               }
> +    }
> +
> +    /**
> +     *  If the item is an IEventDispatcher, watch it for updates.
> +     *  This method is called by the <code>addItemAt()</code> method,
> +     *  and when the source is initially assigned.
> +     *
> +     *  @param item The item passed to the <code>addItemAt()</code> method.
> +     *
> +     *  @langversion 3.0
> +     *  @playerversion Flash 9
> +     *  @playerversion AIR 1.1
> +     *  @productversion Flex 3
> +     */
> +    protected function startTrackUpdates(item:Object):void
> +    {
> +        if (item && (item is IEventDispatcher))
> +        {
> +            IEventDispatcher(item).addEventListener(
> +                                        PropertyChangeEvent.PROPERTY_CHANGE,
> +                                        itemUpdateHandler, false, 0, true);
> +        }
> +    }
> +
> +    /**
> +     *  If the item is an IEventDispatcher, stop watching it for updates.
> +     *  This method is called by the <code>removeItemAt()</code> and
> +     *  <code>removeAll()</code> methods, and before a new
> +     *  source is assigned.
> +     *
> +     *  @param item The item passed to the <code>removeItemAt()</code> method.
> +     *
> +     *  @langversion 3.0
> +     *  @playerversion Flash 9
> +     *  @playerversion AIR 1.1
> +     *  @productversion Flex 3
> +     */
> +    protected function stopTrackUpdates(item:Object):void
> +    {
> +        if (item && item is IEventDispatcher)
> +        {
> +            IEventDispatcher(item).removeEventListener(
> +                                        PropertyChangeEvent.PROPERTY_CHANGE,
> +                                        itemUpdateHandler);
> +        }
> +    }
> +
> +}
> +
> +}
>



-- 
Ix Multimedia Software

Jan Luykenstraat 27
3521 VB Utrecht

T. 06-51952295
I. www.ixsoftware.nl

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