/***************************************************************************
    File                 : ActionManager.cpp
    Project              : SciDAVis
    Description          : Manages QActions and their shortcuts
    --------------------------------------------------------------------
    Copyright            : (C) 2008-2009 Tilman Benkert (thzs*gmx.net)
                           (replace * with @ in the email addresses) 
                           
 ***************************************************************************/

/***************************************************************************
 *                                                                         *
 *  This program is free software; you can redistribute it and/or modify   *
 *  it under the terms of the GNU General Public License as published by   *
 *  the Free Software Foundation; either version 2 of the License, or      *
 *  (at your option) any later version.                                    *
 *                                                                         *
 *  This program 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.                           *
 *                                                                         *
 *   You should have received a copy of the GNU General Public License     *
 *   along with this program; if not, write to the Free Software           *
 *   Foundation, Inc., 51 Franklin Street, Fifth Floor,                    *
 *   Boston, MA  02110-1301  USA                                           *
 *                                                                         *
 ***************************************************************************/

#include "ActionManager.h"
#include <QMutableMapIterator>

ActionManager::ActionManager()
{
}

ActionManager::~ActionManager()
{
 	QMutableMapIterator<QString, QList<QAction *> * > it(d_action_registry);
 	while (it.hasNext())
		delete it.next().value();
}

void ActionManager::addAction(QAction * action, const QString& internal_name)
{
	if (!action)
		return;
	if (!d_action_registry.contains(internal_name)) // new internal name
	{
		QList<QAction *> * list = new QList<QAction *>();
		list->append(action);
		d_action_registry.insert(internal_name, list);
		d_action_shortcuts.insert(internal_name, action->shortcuts());
		connect(action, SIGNAL(destroyed(QObject *)), this, SLOT(removeAction(QObject *)));
	}
	else
	{
		QList<QAction *> * list = d_action_registry.value(internal_name);
		if (!list->contains(action))
		{
			list->append(action);
			connect(action, SIGNAL(destroyed(QObject *)), this, SLOT(removeAction(QObject *)));
		}
		QList<QKeySequence> sequences = d_action_shortcuts.value(internal_name);
		action->setShortcuts(sequences);
	}
	d_action_texts.insert(internal_name, action->text());
}

QList<QKeySequence> ActionManager::shortcuts(const QString& internal_name) const
{
	if(!d_action_shortcuts.contains(internal_name))
		return QList<QKeySequence>();

	return d_action_shortcuts.value(internal_name);
}

void ActionManager::setShortcuts(const QString& internal_name, const QList<QKeySequence>& sequences)
{
	if(!d_action_registry.contains(internal_name)) // new internal name
	{
		QList<QAction *> * list = new QList<QAction *>();
		d_action_registry.insert(internal_name, list);
		d_action_shortcuts.insert(internal_name, sequences);
	}
	else
	{
		QList<QAction *> * list = d_action_registry.value(internal_name);
		foreach(QAction * action, *list)
			action->setShortcuts(sequences);
		d_action_shortcuts.insert(internal_name, sequences); 
	}
}

QString ActionManager::actionText(const QString& internal_name) const
{
	if(!d_action_registry.contains(internal_name))
		return QString();

	QList<QAction *> * list = d_action_registry.value(internal_name);
	if (list->isEmpty())
	{
		if (d_action_texts.contains(internal_name))
			return d_action_texts.value(internal_name);
		else
			return internal_name;
	}
	return list->last()->text();
}

QList<QString> ActionManager::internalNames() const
{
	return d_action_registry.keys();
}

void ActionManager::removeAction(QObject * action)
{
	removeAction(static_cast<QAction *>(action));
}

void ActionManager::removeAction(QAction * action)
{
	if(!action)
		return;

	disconnect(action, SIGNAL(destroyed(QObject *)), this, SLOT(removeAction(QObject *)));
	
 	QMutableMapIterator<QString, QList<QAction *> * > it(d_action_registry);
 	while (it.hasNext())
	{
     	it.next();
		if (it.value()->contains(action))
		{
			d_action_texts.insert(it.key(), action->text());
			it.value()->removeAll(action);
		}
	}
}

