/*
    Copyright 2006-2008 by Robert Knight <robertknight@gmail.com>

    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.
*/

// Own
#include "ProfileList.h"

// Qt
#include <QtGui/QAction>
#include <QtGui/QActionGroup>
#include <KDebug>

// KDE
#include <KIcon>
#include <KLocalizedString>

// Konsole
#include "SessionManager.h"

using namespace Konsole;

ProfileList::ProfileList(bool addShortcuts , QObject* parent)
    : QObject(parent)
    , _addShortcuts(addShortcuts)
    , _emptyListAction(0)
{
    SessionManager* manager = SessionManager::instance();

    // construct the list of favorite session types
    _group = new QActionGroup(this);
    
    // disabled action to be shown only when the list is empty
    _emptyListAction = new QAction(i18n("No profiles available"),_group);
    _emptyListAction->setEnabled(false);

    // TODO - Handle re-sorts when user changes profile names

    QList<Profile::Ptr> list = manager->sortedFavorites();

    QListIterator<Profile::Ptr> iter(list);

    while (iter.hasNext())
    {
        favoriteChanged(iter.next(),true);        
    }

    connect( _group , SIGNAL(triggered(QAction*)) , this , SLOT(triggered(QAction*)) );


    // listen for future changes to the session list
    connect( manager , SIGNAL(favoriteStatusChanged(Profile::Ptr,bool)) , this ,
             SLOT(favoriteChanged(Profile::Ptr,bool)) );
    connect( manager , SIGNAL(shortcutChanged(Profile::Ptr,QKeySequence)) , this , 
             SLOT(shortcutChanged(Profile::Ptr,QKeySequence)) );
    connect( manager , SIGNAL(profileChanged(Profile::Ptr)) , this , 
             SLOT(profileChanged(Profile::Ptr)) );
}
void ProfileList::updateEmptyAction() 
{
    Q_ASSERT( _group );
    Q_ASSERT( _emptyListAction );

    // show empty list action when it is the only action
    // in the group
    const bool showEmptyAction = _group->actions().count() == 1;

    if ( showEmptyAction != _emptyListAction->isVisible() )
        _emptyListAction->setVisible(showEmptyAction);
}
QAction* ProfileList::actionForKey(Profile::Ptr key) const
{        
    QListIterator<QAction*> iter(_group->actions());
    while ( iter.hasNext() )
    {
        QAction* next = iter.next();
        if ( next->data().value<Profile::Ptr>() == key )
            return next;
    }
    return 0; // not found
}

void ProfileList::profileChanged(Profile::Ptr key)
{
    QAction* action = actionForKey(key);
    if ( action )
        updateAction(action,key);
}

void ProfileList::updateAction(QAction* action , Profile::Ptr info)
{
    Q_ASSERT(action);
    Q_ASSERT(info);

    action->setText(info->name());
    action->setIcon(KIcon(info->icon()));
}
void ProfileList::shortcutChanged(Profile::Ptr info,const QKeySequence& sequence)
{
    if ( !_addShortcuts )
        return;

    QAction* action = actionForKey(info);

    if ( action )
    {
        action->setShortcut(sequence);
    }
}
void ProfileList::syncWidgetActions(QWidget* widget, bool sync)
{
    if (!sync)
    {
        _registeredWidgets.remove(widget);
        return;
    }

    _registeredWidgets.insert(widget);

    const QList<QAction*> currentActions = widget->actions();
    foreach(QAction* currentAction, currentActions)
        widget->removeAction(currentAction);

    widget->addActions(_group->actions());
}
void ProfileList::favoriteChanged(Profile::Ptr info,bool isFavorite)
{
    SessionManager* manager = SessionManager::instance();

    if ( isFavorite )
    {
        QAction* action = new QAction(_group);
        action->setData( QVariant::fromValue(info) );
        
        if ( _addShortcuts )
        {
            action->setShortcut(manager->shortcut(info));
        }

        updateAction(action,info);
        
        foreach(QWidget* widget,_registeredWidgets)
            widget->addAction(action);
        emit actionsChanged(_group->actions());
    }
    else
    {
        QAction* action = actionForKey(info);

        if ( action )
        {
            _group->removeAction(action);
            foreach(QWidget* widget,_registeredWidgets)
                widget->removeAction(action);
            emit actionsChanged(_group->actions());
        }
    }

    updateEmptyAction();
}
void ProfileList::triggered(QAction* action)
{
    emit profileSelected( action->data().value<Profile::Ptr>() );
}

QList<QAction*> ProfileList::actions()
{
    return _group->actions();
}

#include "ProfileList.moc"