/******************************************************************************
*
* Copyright (C) 2002 Hugo PEREIRA <mailto: hugo.pereira@free.fr>
*
* This 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 software 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, see <http://www.gnu.org/licenses/>.
*
*******************************************************************************/

#include "DocumentClassMenu.h"

#include "Application.h"
#include "Debug.h"
#include "DocumentClass.h"
#include "DocumentClassManager.h"
#include "IconEngine.h"
#include "MainWindow.h"
#include "Singleton.h"
#include "TextDisplay.h"

//_____________________________________________
DocumentClassMenu::DocumentClassMenu( QWidget* parent ):
QMenu( parent ),
Counter( "DocumentClassMenu" )
{
    Debug::Throw( "DocumentClassMenu::DocumentClassMenu.\n" );
    actionGroup_ = new QActionGroup( this );
    connect( this, SIGNAL(aboutToShow()), SLOT(_update()) );
    connect( this, SIGNAL(triggered(QAction*)), SLOT(_selectClassName(QAction*)) );
}

//_____________________________________________
void DocumentClassMenu::_update()
{
    Debug::Throw( "DocumentClassMenu::_update.\n" );

    // clear menu
    clear();
    actions_.clear();

    // retrieve current class from MainWindow
    auto window( static_cast<MainWindow*>( parentWidget()->window()) );
    auto className( window->activeDisplay().className() );

    // retrieve classes from DocumentClass manager
    for( const auto& documentClass:Base::Singleton::get().application<Application>()->classManager().classes() )
    {
        // insert actions
        QAction* action = addAction( documentClass.name() );
        if( !documentClass.icon().isEmpty() ) action->setIcon( IconEngine::get( documentClass.icon() ) );

        action->setCheckable( true );
        action->setChecked( documentClass.name() == className );
        actionGroup_->addAction( action );

        actions_.insert( action, documentClass.name() );

    }

}

//_____________________________________________
void DocumentClassMenu::_selectClassName( QAction* action )
{
    Debug::Throw( "DocumentClassMenu::_selectClassName.\n" );
    auto iter = actions_.find( action );
    if( iter != actions_.end() )
    { emit documentClassSelected( iter.value() ); }

    return;

}