+Show TOC
×Hide TOC

ChannelExpert

Kind of class:	public class
Package:	com.bourre.plugin
Inherits from:	none
Version:	1.0
Author:	Francis Bourre, Romain Flacher
Classpath:	com.bourre.plugin.ChannelExpert
File last modified:	Monday, 24 November 2008, 11:36:50

► View source

▼ Hide source

/*
 * Copyright the original author or authors.
 * 
 * Licensed under the MOZILLA PUBLIC LICENSE, Version 1.1 (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.mozilla.org/MPL/MPL-1.1.html
 * 
 * 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 com.bourre.plugin
{
    import com.bourre.collection.HashMap;
    import com.bourre.events.ApplicationBroadcaster;
    import com.bourre.events.EventChannel;
    import com.bourre.log.PixlibStringifier;
    
    import flash.utils.Dictionary;    
    
    /**
     * @author Francis Bourre
     * @author Romain Flacher
     * @version 1.0
     */
    public class ChannelExpert
    {
        private static var _oI     : ChannelExpert;
        private static var _N     : uint = 0;

        private var _m                 : HashMap;
        private var _oRegistered     : Dictionary;
        
        /**
         * @return singleton instance of ChannelExpert
         */
        public static function getInstance() : ChannelExpert 
        {
            if ( !( ChannelExpert._oI is ChannelExpert ) ) ChannelExpert._oI = new ChannelExpert( new ConstructorAccess() );
            return ChannelExpert._oI;
        }
        
        public static function release():void
        {
            if ( ChannelExpert._oI is ChannelExpert ) 
            {
                ChannelExpert._oI = null;
                ChannelExpert._N = 0;
            }
        }
        
        public function ChannelExpert( access : ConstructorAccess )
        {
            _m = new HashMap();
            _oRegistered = new Dictionary( true );
        }
        
        public function getChannel( o : Plugin ) : EventChannel
        {
            if( _oRegistered[o] == null )
            {
                if ( _m.containsKey( ChannelExpert._N ) )
                {
                    var channel : EventChannel = _m.get( ChannelExpert._N ) as EventChannel;
                    _oRegistered[o] = channel;
                    ++ ChannelExpert._N;
                    return channel;
        
                } else
                {
                    PluginDebug.getInstance().debug( this + ".getChannel() failed on " + o );
                    _oRegistered[o] = ApplicationBroadcaster.getInstance().NO_CHANNEL;
                    return ApplicationBroadcaster.getInstance().NO_CHANNEL;
                }
            }
            else
            {
                 return _oRegistered[o] as EventChannel;
            }
        }
        
        public function releaseChannel( o : Plugin ) : Boolean
        {
            if( _oRegistered[o] )
            {
                if ( _m.containsKey( o.getChannel() ) ) _m.remove( o.getChannel() );
                _oRegistered[o] = null;

                return true;
            }
            else
            {
                 return false;
            }
        }
        
        public function registerChannel( channel : EventChannel ) : void
        {
            _m.put( ChannelExpert._N, channel );
        }
        
        /**
         * Returns the string representation of this instance.
         * @return the string representation of this instance
         */
        public function toString() : String 
        {
            return PixlibStringifier.stringify( this );
        }
    }
}

internal class ConstructorAccess {}

Summary

Constructor

ChannelExpert (access:ConstructorAccess)

Class methods

getInstance : ChannelExpert
release : void

Instance methods

getChannel (o:Plugin) : EventChannel
releaseChannel (o:Plugin) : Boolean
registerChannel (channel:EventChannel) : void
toString : String
- Returns the string representation of this instance.

Constructor

ChannelExpert

public function ChannelExpert (

access:ConstructorAccess)

Class methods

getInstance

public static function getInstance (

) : ChannelExpert

Returns:

singleton instance of ChannelExpert

release

public static function release (

) : void

Instance methods

getChannel

public function getChannel (

o:Plugin) : EventChannel

registerChannel

public function registerChannel (

channel:EventChannel) : void

releaseChannel

public function releaseChannel (

o:Plugin) : Boolean

toString

public function toString (

) : String

Returns the string representation of this instance.

Returns:

the string representation of this instance