//  FieldButton.cpp
//
//  Copyright (C) 2019  Jaye Evins <evins@snaught.com>
//
//  This file is part of gLabels-qt.
//
//  gLabels-qt 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 3 of the License, or
//  (at your option) any later version.
//
//  gLabels-qt 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 gLabels-qt.  If not, see <http://www.gnu.org/licenses/>.
//


#include "FieldButton.hpp"

#include <QLineEdit>
#include <QStandardItemModel>


namespace glabels
{

        ///
        /// Constructor
        ///
        FieldButton::FieldButton( QWidget* parent ) : QPushButton(parent)
        {
                setEnabled( false );
                setMenu( &mMenu );

                connect( &mMenu, SIGNAL(triggered(QAction*)),
                         this, SLOT(onMenuActionTriggered(QAction*)) );
        }


        ///
        /// Set Keys
        ///
        void FieldButton::setKeys( const merge::Merge*     merge,
                                   const model::Variables& variables )
        {
                // Clear old keys
                mMenu.clear();

                // Add merge keys, if any
                mMenu.addSection( tr("Merge fields") );
                for ( auto& key : merge->keys() )
                {
                        auto* action = mMenu.addAction( QString( "${%1}" ).arg( key ) );
                        action->setData( key );
                }
                if ( merge->keys().empty() )
                {
                        auto* action = mMenu.addAction( "None" );
                        action->setEnabled( false );
                }

                // Add variable keys, if any
                mMenu.addSection( tr("Variables") );
                for ( auto& key : variables.keys() )
                {
                        auto* action = mMenu.addAction( QString( "${%1}" ).arg( key ) );
                        action->setData( key );
                }
                if ( variables.keys().empty() )
                {
                        auto* action = mMenu.addAction( "None" );
                        action->setEnabled( false );
                }

                setEnabled( !merge->keys().empty() || !variables.keys().empty() );
        }


        ///
        /// onMenuActionTriggered slot
        ///
        void FieldButton::onMenuActionTriggered( QAction* action )
        {
                emit keySelected( action->data().toString() );
        }

} // namespace glabels