/*
  ==============================================================================

   This file is part of the JUCE library - "Jules' Utility Class Extensions"
   Copyright 2004-10 by Raw Material Software Ltd.

  ------------------------------------------------------------------------------

   JUCE can be redistributed and/or modified under the terms of the GNU General
   Public License (Version 2), as published by the Free Software Foundation.
   A copy of the license is included in the JUCE distribution, or can be found
   online at www.gnu.org/licenses.

   JUCE is distributed in the hope that it will be useful, but WITHOUT ANY
   WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR
   A PARTICULAR PURPOSE.  See the GNU General Public License for more details.

  ------------------------------------------------------------------------------

   To release a closed-source product which uses JUCE, commercial licenses are
   available: visit www.rawmaterialsoftware.com/juce for more information.

  ==============================================================================
*/

#include "../core/juce_StandardHeader.h"

BEGIN_JUCE_NAMESPACE

#include "juce_ActionListenerList.h"
#include "../threads/juce_ScopedLock.h"


//==============================================================================
// special message of our own with a string in it
class ActionMessage  : public Message
{
public:
    const String message;

    ActionMessage (const String& messageText,
                   void* const listener_) throw()
        : message (messageText)
    {
        pointerParameter = listener_;
    }

    ~ActionMessage() throw()
    {
    }


private:
    ActionMessage (const ActionMessage&);
    ActionMessage& operator= (const ActionMessage&);
};

//==============================================================================
ActionListenerList::ActionListenerList() throw()
{
}

ActionListenerList::~ActionListenerList() throw()
{
}

void ActionListenerList::addActionListener (ActionListener* const listener) throw()
{
    const ScopedLock sl (actionListenerLock_);

    jassert (listener != 0);
    jassert (! actionListeners_.contains (listener)); // trying to add a listener to the list twice!

    if (listener != 0)
        actionListeners_.add (listener);
}

void ActionListenerList::removeActionListener  (ActionListener* const listener) throw()
{
    const ScopedLock sl (actionListenerLock_);

    jassert (actionListeners_.contains (listener)); // trying to remove a listener that isn't on the list!

    actionListeners_.removeValue (listener);
}

void ActionListenerList::removeAllActionListeners() throw()
{
    const ScopedLock sl (actionListenerLock_);
    actionListeners_.clear();
}

void ActionListenerList::sendActionMessage (const String& message) const
{
    const ScopedLock sl (actionListenerLock_);

    for (int i = actionListeners_.size(); --i >= 0;)
        postMessage (new ActionMessage (message, static_cast <ActionListener*> (actionListeners_.getUnchecked(i))));
}

void ActionListenerList::handleMessage (const Message& message)
{
    const ActionMessage& am = (const ActionMessage&) message;

    if (actionListeners_.contains (am.pointerParameter))
        static_cast <ActionListener*> (am.pointerParameter)->actionListenerCallback (am.message);
}

END_JUCE_NAMESPACE
