/********************************************************************
 KWin - the KDE window manager
 This file is part of the KDE project.

Copyright (C) 1999, 2000 Matthias Ettrich <ettrich@kde.org>
Copyright (C) 2003 Lubos Lunak <l.lunak@kde.org>

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, see <http://www.gnu.org/licenses/>.
*********************************************************************/

/*

 This file contains things relevant to direct user actions, such as
 responses to global keyboard shortcuts, or selecting actions
 from the window operations menu.

*/

#include "client.h"
#include "workspace.h"
#include "effects.h"

#include <fixx11h.h>
#include <QPushButton>
#include <QSlider>

#include <kglobalsettings.h>
#include <kiconloader.h>
#include <klocale.h>
#include <kconfig.h>
#include <kglobalaccel.h>
#include <kapplication.h>
#include <QRegExp>
#include <QMenu>
#include <QVBoxLayout>
#include <kauthorized.h>
#include <kactioncollection.h>
#include <kaction.h>

#include "killwindow.h"
#include "tabbox.h"

namespace KWin
{

//****************************************
// Workspace
//****************************************

QMenu* Workspace::clientPopup()
    {
    if ( !popup )
        {
        popup = new QMenu;
        popup->setFont(KGlobalSettings::menuFont());
        connect( popup, SIGNAL( aboutToShow() ), this, SLOT( clientPopupAboutToShow() ) );
        connect( popup, SIGNAL( triggered(QAction*) ), this, SLOT( clientPopupActivated(QAction*) ) );

        advanced_popup = new QMenu( popup );
        advanced_popup->setFont(KGlobalSettings::menuFont());

        mKeepAboveOpAction = advanced_popup->addAction( i18n("Keep &Above Others") );
        mKeepAboveOpAction->setIcon( KIcon( "go-up" ) );
        KAction *kaction = qobject_cast<KAction*>( keys->action("Window Above Other Windows") );
        if ( kaction!=0 )
            mKeepAboveOpAction->setShortcut( kaction->globalShortcut().primary() );
        mKeepAboveOpAction->setCheckable( true );
        mKeepAboveOpAction->setData( Options::KeepAboveOp );

        mKeepBelowOpAction = advanced_popup->addAction( i18n("Keep &Below Others") );
        mKeepBelowOpAction->setIcon( KIcon( "go-down" ) );
        kaction = qobject_cast<KAction*>( keys->action("Window Below Other Windows") );
        if ( kaction!=0 )
            mKeepBelowOpAction->setShortcut( kaction->globalShortcut().primary() );
        mKeepBelowOpAction->setCheckable( true );
        mKeepBelowOpAction->setData( Options::KeepBelowOp );

        mFullScreenOpAction = advanced_popup->addAction( i18n("&Fullscreen") );
        mFullScreenOpAction->setIcon( KIcon( "view-fullscreen" ) );
        kaction = qobject_cast<KAction*>( keys->action("Window Fullscreen") );
        if ( kaction!=0 )
            mFullScreenOpAction->setShortcut( kaction->globalShortcut().primary() );
        mFullScreenOpAction->setCheckable( true );
        mFullScreenOpAction->setData( Options::FullScreenOp );

        mNoBorderOpAction = advanced_popup->addAction( i18n("&No Border") );
        kaction = qobject_cast<KAction*>( keys->action("Window No Border") );
        if ( kaction!=0 )
            mNoBorderOpAction->setShortcut( kaction->globalShortcut().primary() );
        mNoBorderOpAction->setCheckable( true );
        mNoBorderOpAction->setData( Options::NoBorderOp );

        QAction *action = advanced_popup->addAction( i18n("Window &Shortcut...") );
        action->setIcon( KIcon("configure-shortcuts") );
        kaction = qobject_cast<KAction*>( keys->action("Setup Window Shortcut") );
        if ( kaction!=0 )
            action->setShortcut( kaction->globalShortcut().primary() );
        action->setData( Options::SetupWindowShortcutOp );

        action = advanced_popup->addAction( i18n("&Special Window Settings...") );
        action->setIcon( KIcon( "preferences-system-windows-actions" ) );
        action->setData( Options::WindowRulesOp );

        action = advanced_popup->addAction( i18n("&Special Application Settings...") );
        action->setIcon( KIcon( "preferences-system-windows-actions" ) );
        action->setData( Options::ApplicationRulesOp );

        trans_popup = 0;
        if (compositing()){
            trans_popup = new QMenu( popup );
            trans_popup->setFont(KGlobalSettings::menuFont());
            connect( trans_popup, SIGNAL( triggered(QAction*) ), this, SLOT( setPopupClientOpacity(QAction*)));
            const int levels[] = { 100, 90, 75, 50, 25, 10 };
            for( unsigned int i = 0;
                 i < sizeof( levels ) / sizeof( levels[ 0 ] );
                 ++i )
                {
                action = trans_popup->addAction( QString::number( levels[ i ] ) + "%" );
                action->setCheckable( true );
                action->setData( levels[ i ] );
                }
            action = popup->addMenu( trans_popup );
            action->setText( i18n("&Opacity") );
        }

        mMoveOpAction = popup->addAction( i18n("&Move") );
        mMoveOpAction->setIcon( KIcon( "transform-move" ) );
        kaction = qobject_cast<KAction*>( keys->action("Window Move") );
        if ( kaction!=0 )
            mMoveOpAction->setShortcut( kaction->globalShortcut().primary() );
        mMoveOpAction->setData( Options::MoveOp );

        mResizeOpAction = popup->addAction( i18n("Re&size") );
        kaction = qobject_cast<KAction*>( keys->action("Window Resize") );
        if ( kaction!=0 )
            mResizeOpAction->setShortcut( kaction->globalShortcut().primary() );
        mResizeOpAction->setData( Options::ResizeOp );

        mMinimizeOpAction = popup->addAction( i18n("Mi&nimize") );
        kaction = qobject_cast<KAction*>( keys->action("Window Minimize") );
        if ( kaction!=0 )
            mMinimizeOpAction->setShortcut( kaction->globalShortcut().primary() );
        mMinimizeOpAction->setData( Options::MinimizeOp );

        mMaximizeOpAction = popup->addAction( i18n("Ma&ximize") );
        kaction = qobject_cast<KAction*>( keys->action("Window Maximize") );
        if ( kaction!=0 )
            mMaximizeOpAction->setShortcut( kaction->globalShortcut().primary() );
        mMaximizeOpAction->setCheckable( true );
        mMaximizeOpAction->setData( Options::MaximizeOp );

        mShadeOpAction = popup->addAction( i18n("Sh&ade") );
        kaction = qobject_cast<KAction*>( keys->action("Window Shade") );
        if ( kaction!=0 )
            mShadeOpAction->setShortcut( kaction->globalShortcut().primary() );
        mShadeOpAction->setCheckable( true );
        mShadeOpAction->setData( Options::ShadeOp );

        popup->addSeparator();

        // Actions for window tabbing
        if( decorationSupportsClientGrouping() )
            {
            mRemoveTabGroup = popup->addAction( i18n("Remove &from group") );
            kaction = qobject_cast<KAction*>( keys->action("Remove TabGroup") );
            if( kaction!=0 )
                mRemoveTabGroup->setShortcut( kaction->globalShortcut().primary() );
            mRemoveTabGroup->setData( Options::RemoveClientFromGroupOp );

            mCloseGroup = popup->addAction( i18n("Close entire &group") );
            mCloseGroup->setIcon( KIcon( "window-close" ) );
            kaction = qobject_cast<KAction*>( keys->action("Close TabGroup") );
            if( kaction!=0 )
                mCloseGroup->setShortcut( kaction->globalShortcut().primary() );
            mCloseGroup->setData( Options::CloseClientGroupOp );

            popup->addSeparator();
            }

        action = popup->addMenu( advanced_popup );
        action->setText( i18n("Ad&vanced") );

        popup->addSeparator();

        if (!KGlobal::config()->isImmutable() &&
            !KAuthorized::authorizeControlModules(Workspace::configModules(true)).isEmpty())
            {
              action = popup->addAction( i18n("Configur&e Window Behavior...") );
              action->setIcon( KIcon( "configure" ) );
              connect( action, SIGNAL( triggered() ), this, SLOT( configureWM() ) );
              popup->addSeparator();
            }

        mCloseOpAction = popup->addAction( i18n("&Close") );
        mCloseOpAction->setIcon( KIcon( "window-close" ) );
        kaction = qobject_cast<KAction*>( keys->action("Window Close") );
        if ( kaction!=0 )
            mCloseOpAction->setShortcut( kaction->globalShortcut().primary() );
        mCloseOpAction->setData( Options::CloseOp );
        }
    return popup;
    }

void Workspace::discardPopup()
    {
    delete popup;
    popup = NULL; 
    desk_popup = NULL;
    switch_to_tab_popup = NULL;
    add_tabs_popup = NULL;
    }

void Workspace::setPopupClientOpacity( QAction* action )
    {
    if( active_popup_client == NULL )
        return;
    int level = action->data().toInt();
    active_popup_client->setOpacity( level / 100.0 );
    }

/*!
  The client popup menu will become visible soon.

  Adjust the items according to the respective popup client.
 */
void Workspace::clientPopupAboutToShow()
    {
    if ( !active_popup_client || !popup )
        return;

    if ( numberOfDesktops() == 1 )
        {
        delete desk_popup;
        desk_popup = 0;
        }
    else
        {
        initDesktopPopup();
        }

    mResizeOpAction->setEnabled( active_popup_client->isResizable() );
    mMoveOpAction->setEnabled( active_popup_client->isMovableAcrossScreens() );
    mMaximizeOpAction->setEnabled( active_popup_client->isMaximizable() );
    mMaximizeOpAction->setChecked( active_popup_client->maximizeMode() == Client::MaximizeFull );
    mShadeOpAction->setEnabled( active_popup_client->isShadeable() );
    mShadeOpAction->setChecked( active_popup_client->shadeMode() != ShadeNone );
    mKeepAboveOpAction->setChecked( active_popup_client->keepAbove() );
    mKeepBelowOpAction->setChecked( active_popup_client->keepBelow() );
    mFullScreenOpAction->setEnabled( active_popup_client->userCanSetFullScreen() );
    mFullScreenOpAction->setChecked( active_popup_client->isFullScreen() );
    mNoBorderOpAction->setEnabled( active_popup_client->userCanSetNoBorder() );
    mNoBorderOpAction->setChecked( active_popup_client->noBorder() );
    mMinimizeOpAction->setEnabled( active_popup_client->isMinimizable() );
    mCloseOpAction->setEnabled( active_popup_client->isCloseable() );

    delete switch_to_tab_popup;
    switch_to_tab_popup = 0;
    delete add_tabs_popup;
    add_tabs_popup = 0;
    if( decorationSupportsClientGrouping() )
        {
        const int tabGroupSize = active_popup_client->clientGroup() ?
                                 active_popup_client->clientGroup()->items().count() : 1;
        if( tabGroupSize > 1 )
            initSwitchToTab();
        initAddToTabGroup();

        mRemoveTabGroup->setVisible( tabGroupSize > 1 );
        mCloseGroup->setVisible( tabGroupSize > 1 );
        }

    if( trans_popup != NULL )
        {
        foreach( QAction* action, trans_popup->actions())
            {
            if( action->data().toInt() == qRound( active_popup_client->opacity() * 100 ))
                action->setChecked( true );
            else
                action->setChecked( false );
            }
        }
    }

void Workspace::initSwitchToTab()
    {
    if( switch_to_tab_popup )
        return;
    switch_to_tab_popup = new QMenu( popup );
    switch_to_tab_popup->setFont( KGlobalSettings::menuFont() );
    connect( switch_to_tab_popup, SIGNAL( triggered( QAction* ) ),
             this, SLOT( slotSwitchToTab( QAction* ) ) );
    connect( switch_to_tab_popup, SIGNAL( aboutToShow() ),
             this, SLOT( switchToTabPopupAboutToShow() ) );

    QAction* action = switch_to_tab_popup->menuAction();
    popup->insertAction( mRemoveTabGroup, action );
    action->setText( i18n("Switch to window tab") );
    }

void Workspace::slotSwitchToTab( QAction* action )
    {
    int side = action->data().toInt();
    int c_id = active_popup_client->clientGroup()->indexOfVisibleClient();
    int size = active_popup_client->clientGroup()->clients().count();
    if( side == 0 ) // Left
        {
        if( c_id > 0 )
            active_popup_client->clientGroup()->setVisible( c_id - 1 );
        else
            active_popup_client->clientGroup()->setVisible( size - 1 );
        }
    else if( side == 1 ) // Right
        {
        if( c_id < size - 1 )
            active_popup_client->clientGroup()->setVisible( c_id + 1 );
        else
            active_popup_client->clientGroup()->setVisible( 0 );
        }
    else // Find the client
        {
        side -= 2;
        for( QList<ClientGroup*>::const_iterator i = clientGroups.constBegin(); i != clientGroups.constEnd(); ++i )
            {
            if( (*i)->contains( active_popup_client ))
                {
                (*i)->setVisible( side );
                break;
                }
            }
        }
    }

void Workspace::switchToTabPopupAboutToShow()
    {
    if( !switch_to_tab_popup )
        return;
    switch_to_tab_popup->clear();
    QAction* action = switch_to_tab_popup->addAction( i18n( "To the left" ));
    action->setData( 0 );
    action = switch_to_tab_popup->addAction( i18n( "To the right" ));
    action->setData( 1 );
    switch_to_tab_popup->addSeparator();
    int index = 2;
    foreach( Client* c, active_popup_client->clientGroup()->clients() )
        {
        if( c != active_popup_client->clientGroup()->visible() )
            {
            action = switch_to_tab_popup->addAction( c->caption() );
            action->setData( index );
            }
        index++;
        }

    }

void Workspace::initAddToTabGroup()
    {
    if( add_tabs_popup )
        return;
    add_tabs_popup = new QMenu( popup );
    add_tabs_popup->setFont( KGlobalSettings::menuFont() );
    connect( add_tabs_popup, SIGNAL( triggered( QAction* ) ),
             this, SLOT( slotAddToTabGroup( QAction* ) ) ); // Merge to a group
    connect( add_tabs_popup, SIGNAL( aboutToShow() ),
             this, SLOT( groupTabPopupAboutToShow() ) ); // Show the possible groups to add

    QAction* action = add_tabs_popup->menuAction();
    popup->insertAction( mRemoveTabGroup, action );
    action->setText( i18n("Move window to group") );
    }

void Workspace::slotAddToTabGroup( QAction* action )
    {
    if( !action->data().isValid() || !active_popup_client->clientGroup() )
        return;
    moveItemToClientGroup( active_popup_client->clientGroup(),
        active_popup_client->clientGroup()->indexOfClient( active_popup_client ),
        clientGroups[action->data().toInt()], -1 );
    }

void Workspace::groupTabPopupAboutToShow()
    {
    if( !add_tabs_popup )
        return;
    add_tabs_popup->clear();
    int index = 0;
    for( QList<ClientGroup*>::const_iterator i = clientGroups.constBegin(); i != clientGroups.constEnd(); i++, index++ )
        {
        if( !(*i)->contains( active_popup_client ))
            {
            QAction* action = add_tabs_popup->addAction( (*i)->visible()->caption() );
            action->setData( index );
            }
        }
    }

void Workspace::initDesktopPopup()
    {
    if (desk_popup)
        return;

    desk_popup = new QMenu( popup );
    desk_popup->setFont(KGlobalSettings::menuFont());
    connect( desk_popup, SIGNAL( triggered(QAction*) ),
             this, SLOT( slotSendToDesktop(QAction*) ) );
    connect( desk_popup, SIGNAL( aboutToShow() ),
             this, SLOT( desktopPopupAboutToShow() ) );

    QAction *action = desk_popup->menuAction();
    // set it as the first item
    popup->insertAction( trans_popup ? trans_popup->menuAction() : mMoveOpAction, action);
    action->setText( i18n("To &Desktop") );
    }

/*!
  Adjusts the desktop popup to the current values and the location of
  the popup client.
 */
void Workspace::desktopPopupAboutToShow()
    {
    if ( !desk_popup )
        return;

    desk_popup->clear();
    QAction *action = desk_popup->addAction( i18n("&All Desktops") );
    action->setData( 0 );
    action->setCheckable( true );

    if ( active_popup_client && active_popup_client->isOnAllDesktops() )
        action->setChecked( true );
    desk_popup->addSeparator();

    const int BASE = 10;
    for ( int i = 1; i <= numberOfDesktops(); i++ ) {
        QString basic_name("%1  %2");
        if (i<BASE) {
            basic_name.prepend('&');
        }
        action = desk_popup->addAction( basic_name.arg(i).arg( desktopName(i).replace( '&', "&&" ) ) );
        action->setData( i );
        action->setCheckable( true );

        if ( active_popup_client &&
             !active_popup_client->isOnAllDesktops() && active_popup_client->desktop()  == i )
            action->setChecked( true );
        }
    }

void Workspace::closeActivePopup()
    {
    if( active_popup )
        {
        active_popup->close();
        active_popup = NULL;
        active_popup_client = NULL;
        }
    }

/*!
  Create the global accel object \c keys.
 */
void Workspace::initShortcuts()
    {
    keys = new KActionCollection( this );
    KActionCollection* actionCollection = keys;
    QAction* a = 0L;

    // a separate KActionCollection is needed for the shortcut for disabling global shortcuts,
    // otherwise it would also disable itself
    disable_shortcuts_keys = new KActionCollection( this );
    // TODO: PORT ME (KGlobalAccel related)
    // FIXME KAccel port... needed?
    //disable_shortcuts_keys->disableBlocking( true );
#define IN_KWIN
#include "kwinbindings.cpp"
    readShortcuts();
    }

void Workspace::readShortcuts()
    {
    // TODO: PORT ME (KGlobalAccel related)
    //KGlobalAccel::self()->readSettings();

    KAction *kaction = qobject_cast<KAction*>( keys->action("Walk Through Desktops") );
    if ( kaction!=0 )
        {
        cutWalkThroughDesktops = kaction->globalShortcut();
        connect( kaction, SIGNAL(globalShortcutChanged(QKeySequence)), this, SLOT(slotWalkThroughDesktopsKeyChanged(QKeySequence)));
        }

    kaction = qobject_cast<KAction*>( keys->action("Walk Through Desktops (Reverse)") );
    if ( kaction!=0 )
        {
        cutWalkThroughDesktopsReverse = kaction->globalShortcut();
        connect( kaction, SIGNAL(globalShortcutChanged(QKeySequence)), this, SLOT(slotWalkBackThroughDesktopsKeyChanged(QKeySequence)));
        }

    kaction = qobject_cast<KAction*>( keys->action("Walk Through Desktop List") );
    if ( kaction!=0 )
        {
        cutWalkThroughDesktopList = kaction->globalShortcut();
        connect( kaction, SIGNAL(globalShortcutChanged(QKeySequence)), this, SLOT(slotWalkThroughDesktopListKeyChanged(QKeySequence)));
        }

    kaction = qobject_cast<KAction*>( keys->action("Walk Through Desktop List (Reverse)") );
    if ( kaction!=0 )
        {
        cutWalkThroughDesktopListReverse = kaction->globalShortcut();
        connect( kaction, SIGNAL(globalShortcutChanged(QKeySequence)), this, SLOT(slotWalkBackThroughDesktopListKeyChanged(QKeySequence)));
        }

    kaction = qobject_cast<KAction*>( keys->action("Walk Through Windows") );
    if ( kaction!=0 )
        {
        cutWalkThroughWindows = kaction->globalShortcut();
        connect( kaction, SIGNAL(globalShortcutChanged(QKeySequence)), this, SLOT(slotWalkThroughWindowsKeyChanged(QKeySequence)));
        }

    kaction = qobject_cast<KAction*>( keys->action("Walk Through Windows (Reverse)") );
    if ( kaction!=0 )
        {
        cutWalkThroughWindowsReverse = kaction->globalShortcut();
        connect( kaction, SIGNAL(globalShortcutChanged(QKeySequence)), this, SLOT(slotWalkBackThroughWindowsKeyChanged(QKeySequence)));
        }

    kaction = qobject_cast<KAction*>( keys->action("Walk Through Window Tabs") );
    if( kaction != 0 )
        {
        cutWalkThroughGroupWindows = kaction->globalShortcut();
        connect( kaction, SIGNAL( globalShortcutChanged( QKeySequence ) ), this,
        SLOT( slotMoveToTabRightKeyChanged( QKeySequence ) ) );
        }

    kaction = qobject_cast<KAction*>( keys->action("Walk Through Window Tabs (Reverse)") );
    if( kaction != 0 )
        {
        cutWalkThroughGroupWindowsReverse = kaction->globalShortcut();
        connect( kaction, SIGNAL( globalShortcutChanged( QKeySequence ) ), this,
        SLOT( slotMoveToTabLeftKeyChanged( QKeySequence ) ) );
        }

    kaction = qobject_cast<KAction*>( keys->action("Walk Through Windows Alternative") );
    if ( kaction!=0 )
        {
        cutWalkThroughWindowsAlternative = kaction->globalShortcut();
        connect( kaction, SIGNAL(globalShortcutChanged(QKeySequence)), this, SLOT(slotWalkThroughWindowsAlternativeKeyChanged(QKeySequence)));
        }

    kaction = qobject_cast<KAction*>( keys->action("Walk Through Windows Alternative (Reverse)") );
    if ( kaction!=0 )
        {
        cutWalkThroughWindowsAlternativeReverse = kaction->globalShortcut();
        connect( kaction, SIGNAL(globalShortcutChanged(QKeySequence)), this, SLOT(slotWalkBackThroughWindowsAlternativeKeyChanged(QKeySequence)));
        }
    discardPopup(); // so that it's recreated next time
    }


void Workspace::setupWindowShortcut( Client* c )
    {
    assert( client_keys_dialog == NULL );
    // TODO: PORT ME (KGlobalAccel related)
    //keys->setEnabled( false );
    //disable_shortcuts_keys->setEnabled( false );
    //client_keys->setEnabled( false );
    client_keys_dialog = new ShortcutDialog( c->shortcut().primary());
    client_keys_client = c;
    connect( client_keys_dialog, SIGNAL( dialogDone( bool )), SLOT( setupWindowShortcutDone( bool )));
    QRect r = clientArea( ScreenArea, c );
    QSize size = client_keys_dialog->sizeHint();
    QPoint pos = c->pos() + c->clientPos();
    if( pos.x() + size.width() >= r.right())
        pos.setX( r.right() - size.width());
    if( pos.y() + size.height() >= r.bottom())
        pos.setY( r.bottom() - size.height());
    client_keys_dialog->move( pos );
    client_keys_dialog->show();
    active_popup = client_keys_dialog;
    active_popup_client = c;
    }

void Workspace::setupWindowShortcutDone( bool ok )
    {
//    keys->setEnabled( true );
//    disable_shortcuts_keys->setEnabled( true );
//    client_keys->setEnabled( true );
    if( ok )
        client_keys_client->setShortcut( KShortcut( client_keys_dialog->shortcut()).toString());
    closeActivePopup();
    client_keys_dialog->deleteLater();
    client_keys_dialog = NULL;
    client_keys_client = NULL;
    }

void Workspace::clientShortcutUpdated( Client* c )
    {
    QString key = QString( "_k_session:%1" ).arg(c->window());
    QAction* action = client_keys->action( key.toLatin1().constData() );
    if( !c->shortcut().isEmpty())
        {
        if( action == NULL ) // new shortcut
            {
            action = client_keys->addAction(QString( key ));
            action->setText( i18n("Activate Window (%1)", c->caption()) );
            connect( action, SIGNAL(triggered(bool)), c, SLOT(shortcutActivated()) );
            }

        KAction *kaction = qobject_cast<KAction*>( action );
        // no autoloading, since it's configured explicitly here and is not meant to be reused
        // (the key is the window id anyway, which is kind of random)
        kaction->setGlobalShortcut(
                c->shortcut(), KAction::ActiveShortcut, KAction::NoAutoloading );
        kaction->setEnabled( true );
        }
    else
        {
        KAction *kaction = qobject_cast<KAction*>( action );
        if( kaction )
            {
            kaction->forgetGlobalShortcut();
            }
        delete action;
        }
    }

void Workspace::clientPopupActivated( QAction *action )
    {
      if ( !action->data().isValid() )
        return;

    WindowOperation op = static_cast< WindowOperation >( action->data().toInt() );
    Client* c = active_popup_client ? active_popup_client : active_client;
    QString type;
    switch( op )
        {
        case FullScreenOp:
            if( !c->isFullScreen() && c->userCanSetFullScreen())
                type = "fullscreenaltf3";
          break;
        case NoBorderOp:
            if( !c->noBorder() && c->userCanSetNoBorder())
                type = "noborderaltf3";
          break;
        default:
            break;
        };
    if( !type.isEmpty())
        helperDialog( type, c );
    performWindowOperation( c, op );
    }


void Workspace::performWindowOperation( Client* c, Options::WindowOperation op )
    {
    if ( !c )
        return;

    if (op == Options::MoveOp || op == Options::UnrestrictedMoveOp )
        QCursor::setPos( c->geometry().center() );
    if (op == Options::ResizeOp || op == Options::UnrestrictedResizeOp )
        QCursor::setPos( c->geometry().bottomRight());
    switch ( op )
        {
        case Options::MoveOp:
            c->performMouseCommand( Options::MouseMove, cursorPos() );
            break;
        case Options::UnrestrictedMoveOp:
            c->performMouseCommand( Options::MouseUnrestrictedMove, cursorPos() );
            break;
        case Options::ResizeOp:
            c->performMouseCommand( Options::MouseResize, cursorPos() );
            break;
        case Options::UnrestrictedResizeOp:
            c->performMouseCommand( Options::MouseUnrestrictedResize, cursorPos() );
            break;
        case Options::CloseOp:
            c->closeWindow();
            break;
        case Options::MaximizeOp:
            c->maximize( c->maximizeMode() == Client::MaximizeFull
                ? Client::MaximizeRestore : Client::MaximizeFull );
            break;
        case Options::HMaximizeOp:
            c->maximize( c->maximizeMode() ^ Client::MaximizeHorizontal );
            break;
        case Options::VMaximizeOp:
            c->maximize( c->maximizeMode() ^ Client::MaximizeVertical );
            break;
        case Options::RestoreOp:
            c->maximize( Client::MaximizeRestore );
            break;
        case Options::MinimizeOp:
            c->minimize();
            break;
        case Options::ShadeOp:
            c->performMouseCommand( Options::MouseShade, cursorPos());
            break;
        case Options::OnAllDesktopsOp:
            c->setOnAllDesktops( !c->isOnAllDesktops() );
            break;
        case Options::FullScreenOp:
            c->setFullScreen( !c->isFullScreen(), true );
            break;
        case Options::NoBorderOp:
            c->setNoBorder( !c->noBorder());
            break;
        case Options::KeepAboveOp:
            {
            StackingUpdatesBlocker blocker( this );
            bool was = c->keepAbove();
            c->setKeepAbove( !c->keepAbove() );
            if( was && !c->keepAbove())
                raiseClient( c );
            break;
            }
        case Options::KeepBelowOp:
            {
            StackingUpdatesBlocker blocker( this );
            bool was = c->keepBelow();
            c->setKeepBelow( !c->keepBelow() );
            if( was && !c->keepBelow())
                lowerClient( c );
            break;
            }
        case Options::OperationsOp:
            c->performMouseCommand( Options::MouseShade, cursorPos());
            break;
        case Options::WindowRulesOp:
            editWindowRules( c, false );
            break;
        case Options::ApplicationRulesOp:
            editWindowRules( c, true );
            break;
        case Options::SetupWindowShortcutOp:
            setupWindowShortcut( c );
            break;
        case Options::LowerOp:
            lowerClient(c);
            break;
        case Options::ClientGroupDragOp: // Handled by decoration itself
        case Options::NoOp:
            break;
        case Options::RemoveClientFromGroupOp:
            c->clientGroup()->remove( c );
            break;
        case Options::MoveClientInGroupLeftOp:
            {
            int c_id = c->clientGroup()->indexOfClient( c );
            int size = c->clientGroup()->clients().count();
            if( c_id > 0 )
                c->clientGroup()->setVisible( c_id - 1 );
            else
                c->clientGroup()->setVisible( size - 1 );
            break;
            }
        case Options::MoveClientInGroupRightOp:
            {
            int c_id = c->clientGroup()->indexOfClient( c );
            int size = c->clientGroup()->clients().count();
            if( c_id < size - 1 )
                c->clientGroup()->setVisible( c_id + 1 );
            else
                c->clientGroup()->setVisible( 0 );
            break;
            }
        case Options::CloseClientGroupOp:
            c->clientGroup()->closeAll();
        }
    }

/**
 * Called by the decoration in the new API to determine what buttons the user has configured for
 * window tab dragging and the operations menu.
 */
Options::WindowOperation Client::mouseButtonToWindowOperation( Qt::MouseButtons button )
    {
    Options::MouseCommand com = Options::MouseNothing;
    bool active = isActive();
    if( !wantsInput() ) // we cannot be active, use it anyway
        active = true;

    if( button == Qt::LeftButton )
        com = active ? options->commandActiveTitlebar1() : options->commandInactiveTitlebar1();
    else if( button == Qt::MidButton )
        com = active ? options->commandActiveTitlebar2() : options->commandInactiveTitlebar2();
    else if( button == Qt::RightButton )
        com = active ? options->commandActiveTitlebar3() : options->commandInactiveTitlebar3();

    // TODO: Complete the list
    if( com == Options::MouseClientGroupDrag )
        return Options::ClientGroupDragOp;
    if( com == Options::MouseOperationsMenu )
        return Options::OperationsOp;
    return Options::NoOp;
    }

/*!
  Performs a mouse command on this client (see options.h)
 */
bool Client::performMouseCommand( Options::MouseCommand command, const QPoint &globalPos, bool handled )
    {
    bool replay = false;
    switch (command)
        {
        case Options::MouseRaise:
            workspace()->raiseClient( this );
            break;
        case Options::MouseLower:
            workspace()->lowerClient( this );
            // As this most likely makes the window no longer visible change the
            // keyboard focus to the next available window.
            //workspace()->activateNextClient( this ); // Doesn't work when we lower a child window
            workspace()->activateClient( workspace()->topClientOnDesktop( workspace()->currentDesktop(), -1 ));
            break;
        case Options::MouseShade :
            toggleShade();
            cancelShadeHoverTimer();
            break;
        case Options::MouseSetShade:
            setShade( ShadeNormal );
            cancelShadeHoverTimer();
            break;
        case Options::MouseUnsetShade:
            setShade( ShadeNone );
            cancelShadeHoverTimer();
            break;
        case Options::MouseOperationsMenu:
            if ( isActive() && options->clickRaise )
                autoRaise();
            workspace()->showWindowMenu( globalPos, this );
            break;
        case Options::MouseToggleRaiseAndLower:
            workspace()->raiseOrLowerClient( this );
            break;
        case Options::MouseActivateAndRaise:
            replay = isActive(); // for clickraise mode
            workspace()->takeActivity( this, ActivityFocus | ActivityRaise, handled && replay );
            workspace()->setActiveScreenMouse( globalPos );
            break;
        case Options::MouseActivateAndLower:
            workspace()->requestFocus( this );
            workspace()->lowerClient( this );
            workspace()->setActiveScreenMouse( globalPos );
            break;
        case Options::MouseActivate:
            replay = isActive(); // for clickraise mode
            workspace()->takeActivity( this, ActivityFocus, handled && replay );
            workspace()->setActiveScreenMouse( globalPos );
            break;
        case Options::MouseActivateRaiseAndPassClick:
            workspace()->takeActivity( this, ActivityFocus | ActivityRaise, handled );
            workspace()->setActiveScreenMouse( globalPos );
            replay = true;
            break;
        case Options::MouseActivateAndPassClick:
            workspace()->takeActivity( this, ActivityFocus, handled );
            workspace()->setActiveScreenMouse( globalPos );
            replay = true;
            break;
        case Options::MouseActivateRaiseAndMove:
        case Options::MouseActivateRaiseAndUnrestrictedMove:
            workspace()->raiseClient( this );
            workspace()->requestFocus( this );
            workspace()->setActiveScreenMouse( globalPos );
            if( options->moveMode == Options::Transparent && isMovableAcrossScreens())
                move_faked_activity = workspace()->fakeRequestedActivity( this );
        // fallthrough
        case Options::MouseMove:
        case Options::MouseUnrestrictedMove:
            {
            if (!isMovableAcrossScreens())
                break;
            if( moveResizeMode )
                finishMoveResize( false );
            mode = PositionCenter;
            buttonDown = true;
            moveOffset = QPoint( globalPos.x() - x(), globalPos.y() - y()); // map from global
            invertedMoveOffset = rect().bottomRight() - moveOffset;
            unrestrictedMoveResize = ( command == Options::MouseActivateRaiseAndUnrestrictedMove
                                    || command == Options::MouseUnrestrictedMove );
            if( !startMoveResize())
                buttonDown = false;
            updateCursor();
            break;
            }
        case Options::MouseResize:
        case Options::MouseUnrestrictedResize:
            {
            if (!isResizable() || isShade())
                break;
            if( moveResizeMode )
                finishMoveResize( false );
            buttonDown = true;
            moveOffset = QPoint( globalPos.x() - x(), globalPos.y() - y()); // map from global
            int x = moveOffset.x(), y = moveOffset.y();
            bool left = x < width() / 3;
            bool right = x >= 2 * width() / 3;
            bool top = y < height() / 3;
            bool bot = y >= 2 * height() / 3;
            if (top)
                mode = left ? PositionTopLeft : (right ? PositionTopRight : PositionTop);
            else if (bot)
                mode = left ? PositionBottomLeft : (right ? PositionBottomRight : PositionBottom);
            else
                mode = (x < width() / 2) ? PositionLeft : PositionRight;
            invertedMoveOffset = rect().bottomRight() - moveOffset;
            unrestrictedMoveResize = ( command == Options::MouseUnrestrictedResize );
            if( !startMoveResize())
                buttonDown = false;
            updateCursor();
            break;
            }
        case Options::MouseMaximize:
            maximize( Client::MaximizeFull );
            break;
        case Options::MouseRestore:
            maximize( Client::MaximizeRestore );
            break;
        case Options::MouseMinimize:
            minimize();
            break;
        case Options::MouseAbove:
            {
            StackingUpdatesBlocker blocker( workspace());
            if( keepBelow())
                setKeepBelow( false );
            else
                setKeepAbove( true );
            break;
            }
        case Options::MouseBelow:
            {
            StackingUpdatesBlocker blocker( workspace());
            if( keepAbove())
                setKeepAbove( false );
            else
                setKeepBelow( true );
            break;
            }
        case Options::MousePreviousDesktop:
            workspace()->windowToPreviousDesktop( this );
            break;
        case Options::MouseNextDesktop:
            workspace()->windowToNextDesktop( this );
            break;
        case Options::MouseOpacityMore:
            if( !isDesktop() ) // No point in changing the opacity of the desktop
                setOpacity( qMin( opacity() + 0.1, 1.0 ));
            break;
        case Options::MouseOpacityLess:
            if( !isDesktop() ) // No point in changing the opacity of the desktop
                setOpacity( qMax( opacity() - 0.1, 0.1 ));
            break;
        case Options::MouseLeftGroupWindow:
            {
            if( clientGroup() ) 
                {
                int c_id = clientGroup()->indexOfClient( this );
                int size = clientGroup()->clients().count();
                if( c_id > 0 )
                    clientGroup()->setVisible( c_id - 1 );
                else
                    clientGroup()->setVisible( size - 1 );
	        }
            }
            break;
        case Options::MouseRightGroupWindow:
	    {
            if( clientGroup() ) 
                {
                int c_id = clientGroup()->indexOfClient( this );
                int size = clientGroup()->clients().count();
                if( c_id < size - 1 )
                    clientGroup()->setVisible( c_id + 1 );
                else
                    clientGroup()->setVisible( 0 );
	        }
            }
            break;
        case Options::MouseClose:
            closeWindow();
            break;
        case Options::MouseClientGroupDrag:
        case Options::MouseNothing:
            replay = true;
            break;
        }
    return replay;
    }

// KDE4 remove me
void Workspace::showWindowMenuAt( unsigned long, int, int )
    {
    slotWindowOperations();
    }

void Workspace::loadEffect( const QString& name )
    {
    if( effects )
        static_cast<EffectsHandlerImpl*>(effects)->loadEffect( name );
    }

void Workspace::toggleEffect( const QString& name )
    {
    if( effects )
        static_cast<EffectsHandlerImpl*>(effects)->toggleEffect( name );
    }

void Workspace::unloadEffect( const QString& name )
    {
    if( effects )
        static_cast<EffectsHandlerImpl*>(effects)->unloadEffect( name );
    }

void Workspace::reconfigureEffect( const QString& name )
    {
    if( effects )
        static_cast<EffectsHandlerImpl*>(effects)->reconfigureEffect( name );
    }

QStringList Workspace::loadedEffects() const
    {
    QStringList listModulesLoaded;
    if ( effects )
        listModulesLoaded = static_cast<EffectsHandlerImpl*>(effects)->loadedEffects();
    return listModulesLoaded;
    }

QStringList Workspace::listOfEffects() const
    {
    QStringList listModules;
    if ( effects )
        listModules = static_cast<EffectsHandlerImpl*>(effects)->listOfEffects();
    return listModules;
    }

void Workspace::slotActivateAttentionWindow()
    {
    if( attention_chain.count() > 0 )
        activateClient( attention_chain.first());
    }

void Workspace::slotSwitchDesktopNext()
    {
    int d = currentDesktop() + 1;
     if ( d > numberOfDesktops() )
        {
        if ( options->rollOverDesktops )
            {
            d = 1;
            }
        else
            {
            return;
            }
        }
    setCurrentDesktop(d);
    }

void Workspace::slotSwitchDesktopPrevious()
    {
    int d = currentDesktop() - 1;
    if ( d <= 0 )
        {
        if ( options->rollOverDesktops )
          d = numberOfDesktops();
      else
          return;
        }
    setCurrentDesktop(d);
    }

void Workspace::slotSwitchDesktopRight()
    {
    int desktop = desktopToRight( currentDesktop(), options->rollOverDesktops);
    if( desktop == currentDesktop())
        return;
    setCurrentDesktop( desktop );
    }

void Workspace::slotSwitchDesktopLeft()
    {
    int desktop = desktopToLeft( currentDesktop(), options->rollOverDesktops);
    if( desktop == currentDesktop())
        return;
    setCurrentDesktop( desktop );
    }

void Workspace::slotSwitchDesktopUp()
    {
    int desktop = desktopAbove( currentDesktop(), options->rollOverDesktops);
    if( desktop == currentDesktop())
        return;
    setCurrentDesktop( desktop );
    }

void Workspace::slotSwitchDesktopDown()
    {
    int desktop = desktopBelow( currentDesktop(), options->rollOverDesktops);
    if( desktop == currentDesktop())
        return;
    setCurrentDesktop( desktop );
    }

void Workspace::slotSwitchToDesktop( int i )
    {
    setCurrentDesktop( i );
    }


void Workspace::slotWindowToDesktop( int i )
    {
    Client* c = active_popup_client ? active_popup_client : active_client;
    if( i >= 1 && i <= numberOfDesktops() && c
        && !c->isDesktop()
        && !c->isDock()
        && !c->isTopMenu())
            sendClientToDesktop( c, i, true );
    }

void Workspace::slotSwitchToScreen( int i )
    {
    setCurrentScreen( i );
    }

void Workspace::slotSwitchToNextScreen()
    {
    slotSwitchToScreen(( activeScreen() + 1 ) % numScreens());
    }

void Workspace::slotWindowToScreen( int i )
    {
    Client* c = active_popup_client ? active_popup_client : active_client;
    if( i >= 0 && i <= numScreens() && c
        && !c->isDesktop()
        && !c->isDock()
        && !c->isTopMenu())
        {
        sendClientToScreen( c, i );
        }
    }

void Workspace::slotWindowToNextScreen()
    {
    Client* c = active_popup_client ? active_popup_client : active_client;
    if( c
        && !c->isDesktop()
        && !c->isDock()
        && !c->isTopMenu())
        {
        sendClientToScreen( c, ( c->screen() + 1 ) % numScreens());
        }
    }

/*!
  Maximizes the popup client
 */
void Workspace::slotWindowMaximize()
    {
    Client* c = active_popup_client ? active_popup_client : active_client;
    if ( c )
        performWindowOperation( c, Options::MaximizeOp );
    }

/*!
  Maximizes the popup client vertically
 */
void Workspace::slotWindowMaximizeVertical()
    {
    Client* c = active_popup_client ? active_popup_client : active_client;
    if ( c )
        performWindowOperation( c, Options::VMaximizeOp );
    }

/*!
  Maximizes the popup client horiozontally
 */
void Workspace::slotWindowMaximizeHorizontal()
    {
    Client* c = active_popup_client ? active_popup_client : active_client;
    if ( c )
        performWindowOperation( c, Options::HMaximizeOp );
    }


/*!
  Minimizes the popup client
 */
void Workspace::slotWindowMinimize()
    {
    Client* c = active_popup_client ? active_popup_client : active_client;
    performWindowOperation( c, Options::MinimizeOp );
    }

/*!
  Shades/unshades the popup client respectively
 */
void Workspace::slotWindowShade()
    {
    Client* c = active_popup_client ? active_popup_client : active_client;
    performWindowOperation( c, Options::ShadeOp );
    }

/*!
  Raises the popup client
 */
void Workspace::slotWindowRaise()
    {
    Client* c = active_popup_client ? active_popup_client : active_client;
    if ( c )
        raiseClient( c );
    }

/*!
  Lowers the popup client
 */
void Workspace::slotWindowLower()
    {
    Client* c = active_popup_client ? active_popup_client : active_client;
    if ( c )
        {
        lowerClient( c );
        // As this most likely makes the window no longer visible change the
        // keyboard focus to the next available window.
        //activateNextClient( c ); // Doesn't work when we lower a child window
        activateClient( topClientOnDesktop( currentDesktop(), -1 ));
        }
    }

/*!
  Does a toggle-raise-and-lower on the popup client;
  */
void Workspace::slotWindowRaiseOrLower()
    {
    Client* c = active_popup_client ? active_popup_client : active_client;
    if  ( c )
        raiseOrLowerClient( c );
    }

void Workspace::slotWindowOnAllDesktops()
    {
    Client* c = active_popup_client ? active_popup_client : active_client;
    if( c )
        c->setOnAllDesktops( !c->isOnAllDesktops());
    }

void Workspace::slotWindowFullScreen()
    {
    Client* c = active_popup_client ? active_popup_client : active_client;
    if( c )
        performWindowOperation( c, Options::FullScreenOp );
    }

void Workspace::slotWindowNoBorder()
    {
    Client* c = active_popup_client ? active_popup_client : active_client;
    if( c )
        performWindowOperation( c, Options::NoBorderOp );
    }

void Workspace::slotWindowAbove()
    {
    Client* c = active_popup_client ? active_popup_client : active_client;
    if( c )
        performWindowOperation( c, Options::KeepAboveOp );
    }

void Workspace::slotWindowBelow()
    {
    Client* c = active_popup_client ? active_popup_client : active_client;
    if( c )
        performWindowOperation( c, Options::KeepBelowOp );
    }
void Workspace::slotSetupWindowShortcut()
    {
    Client* c = active_popup_client ? active_popup_client : active_client;
    if( c )
        performWindowOperation( c, Options::SetupWindowShortcutOp );
    }

/*!
  Toggles show desktop
 */
void Workspace::slotToggleShowDesktop()
    {
    setShowingDesktop( !showingDesktop() );
    }

/*!
  Move window to next desktop
 */
void Workspace::slotWindowToNextDesktop()
    {
    windowToNextDesktop( active_popup_client ? active_popup_client : active_client );
    }

void Workspace::windowToNextDesktop( Client* c )
    {
    int d = currentDesktop() + 1;
    if ( d > numberOfDesktops() )
        d = 1;
    if (c && !c->isDesktop()
        && !c->isDock() && !c->isTopMenu())
        {
        setClientIsMoving( c );
        setCurrentDesktop( d );
        setClientIsMoving( NULL );
        }
    }

/*!
  Move window to previous desktop
 */
void Workspace::slotWindowToPreviousDesktop()
    {
    windowToPreviousDesktop( active_popup_client ? active_popup_client : active_client );
    }

void Workspace::windowToPreviousDesktop( Client* c )
    {
    int d = currentDesktop() - 1;
    if ( d <= 0 )
        d = numberOfDesktops();
    if (c && !c->isDesktop()
        && !c->isDock() && !c->isTopMenu())
        {
        setClientIsMoving( c );
        setCurrentDesktop( d );
        setClientIsMoving( NULL );
        }
    }

void Workspace::slotWindowToDesktopRight()
    {
    int d = desktopToRight( currentDesktop(), options->rollOverDesktops);
    if( d == currentDesktop())
        return;
    Client* c = active_popup_client ? active_popup_client : active_client;
    if (c && !c->isDesktop()
        && !c->isDock() && !c->isTopMenu())
        {
        setClientIsMoving( c );
        setCurrentDesktop( d );
        setClientIsMoving( NULL );
        }
    }

void Workspace::slotWindowToDesktopLeft()
    {
    int d = desktopToLeft( currentDesktop(), options->rollOverDesktops);
    if( d == currentDesktop())
        return;
    Client* c = active_popup_client ? active_popup_client : active_client;
    if (c && !c->isDesktop()
        && !c->isDock() && !c->isTopMenu())
        {
        setClientIsMoving( c );
        setCurrentDesktop( d );
        setClientIsMoving( NULL );
        }
    }

void Workspace::slotWindowToDesktopUp()
    {
    int d = desktopAbove( currentDesktop(), options->rollOverDesktops);
    if( d == currentDesktop())
        return;
    Client* c = active_popup_client ? active_popup_client : active_client;
    if (c && !c->isDesktop()
        && !c->isDock() && !c->isTopMenu())
        {
        setClientIsMoving( c );
        setCurrentDesktop( d );
        setClientIsMoving( NULL );
        }
    }

void Workspace::slotWindowToDesktopDown()
    {
    int d = desktopBelow( currentDesktop(), options->rollOverDesktops);
    if( d == currentDesktop())
        return;
    Client* c = active_popup_client ? active_popup_client : active_client;
    if (c && !c->isDesktop()
        && !c->isDock() && !c->isTopMenu())
        {
        setClientIsMoving( c );
        setCurrentDesktop( d );
        setClientIsMoving( NULL );
        }
    }

void Workspace::slotSwitchToTabRight()
    {
    if( !active_client || !active_client->clientGroup() )
        return;
    int c_id = active_client->clientGroup()->indexOfClient( active_client );
    int size = active_client->clientGroup()->clients().count();
    if( c_id < size - 1 )
        active_client->clientGroup()->setVisible( c_id + 1 );
    else
        active_client->clientGroup()->setVisible( 0 );
    }

void Workspace::slotSwitchToTabLeft()
    {
    if( !active_client || !active_client->clientGroup() )
        return;
    int c_id = active_client->clientGroup()->indexOfClient( active_client );
    int size = active_client->clientGroup()->clients().count();
    if( c_id > 0 )
        active_client->clientGroup()->setVisible( c_id - 1 );
    else
        active_client->clientGroup()->setVisible( size - 1 );
    }

void Workspace::slotRemoveFromGroup()
    {
    if( !active_client || !active_client->clientGroup() )
        return;
    active_client->clientGroup()->remove( active_client );
    }

/*!
  Kill Window feature, similar to xkill
 */
void Workspace::slotKillWindow()
    {
    KillWindow kill( this );
    kill.start();
    }

/*!
  Sends the popup client to desktop \a desk

  Internal slot for the window operation menu
 */
void Workspace::slotSendToDesktop( QAction *action )
    {
      int desk = action->data().toInt();
    if ( !active_popup_client )
        return;
    if ( desk == 0 )
        { // the 'on_all_desktops' menu entry
        active_popup_client->setOnAllDesktops( !active_popup_client->isOnAllDesktops());
        return;
        }

    sendClientToDesktop( active_popup_client, desk, false );

    }

/*!
  Switches to the nearest window in given direction
 */
void Workspace::switchWindow( Direction direction )
    {
    if( !active_client )
        return;
    Client *c = active_client;
    Client *switchTo = 0;
    int bestScore = 0;
    int d = c->desktop();
    // Centre of the active window
    QPoint curPos( c->pos().x() + c->geometry().width() / 2,
                   c->pos().y() + c->geometry().height() / 2 );

    QList<Client *> clist = stackingOrder();
    for( QList<Client *>::Iterator i = clist.begin(); i != clist.end(); ++i )
        {
        if( (*i)->wantsTabFocus() && *i != c &&
            (*i)->desktop() == d && ! (*i)->isMinimized() )
            {
            // Centre of the other window
            QPoint other( (*i)->pos().x() + (*i)->geometry().width() / 2,
                          (*i)->pos().y() + (*i)->geometry().height() / 2 );

            int distance;
            int offset;
            switch( direction )
                {
                case DirectionNorth:
                    distance = curPos.y() - other.y();
                    offset = qAbs(other.x() - curPos.x());
                    break;
                case DirectionEast:
                    distance = other.x() - curPos.x();
                    offset = qAbs(other.y() - curPos.y());
                    break;
                case DirectionSouth:
                    distance = other.y() - curPos.y();
                    offset = qAbs(other.x() - curPos.x());
                    break;
                case DirectionWest:
                    distance = curPos.x() - other.x();
                    offset = qAbs(other.y() - curPos.y());
                    break;
                default:
                    distance = -1;
                    offset = -1;
                }

            if( distance > 0 )
                {
                // Inverse score
                int score = distance + offset + ( (offset * offset) / distance );
                if( score < bestScore || !switchTo )
                    {
                    switchTo = *i;
                    bestScore = score;
                    }
                }
            }
        }
    if( switchTo )
        activateClient( switchTo );
    }

/*!
  Switches to upper window
 */
void Workspace::slotSwitchWindowUp()
    {
    switchWindow( DirectionNorth );
    }

/*!
  Switches to lower window
 */
void Workspace::slotSwitchWindowDown()
    {
    switchWindow( DirectionSouth );
    }

/*!
  Switches to window on the right
 */
void Workspace::slotSwitchWindowRight()
    {
    switchWindow( DirectionEast );
    }

/*!
  Switches to window on the left
 */
void Workspace::slotSwitchWindowLeft()
    {
    switchWindow( DirectionWest );
    }

/*!
  Shows the window operations popup menu for the activeClient()
 */
void Workspace::slotWindowOperations()
    {
    if ( !active_client )
        return;
    QPoint pos = active_client->pos() + active_client->clientPos();
    showWindowMenu( pos.x(), pos.y(), active_client );
    }

void Workspace::showWindowMenu( const QRect &pos, Client* cl )
    {
    if (!KAuthorized::authorizeKAction("kwin_rmb"))
        return;
    if( !cl )
        return;
    if( active_popup_client != NULL ) // recursion
        return;
    if ( cl->isDesktop()
        || cl->isDock()
        || cl->isTopMenu())
        return;

    active_popup_client = cl;
    QMenu* p = clientPopup();
    active_popup = p;
    int x = pos.left();
    int y = pos.bottom();
    if (y == pos.top())
	p->exec( QPoint( x, y ) );
    else
        {
	QRect area = clientArea(ScreenArea, QPoint(x, y), currentDesktop());
        clientPopupAboutToShow(); // needed for sizeHint() to be correct :-/
	int popupHeight = p->sizeHint().height();
	if (y + popupHeight < area.height())
	    p->exec( QPoint( x, y ) );
	else
	    p->exec( QPoint( x, pos.top() - popupHeight ) );
        }
    // active popup may be already changed (e.g. the window shortcut dialog)
    if( active_popup == p )
        closeActivePopup();
    }

/*!
  Closes the popup client
 */
void Workspace::slotWindowClose()
    {
    // TODO: why?
//     if ( tab_box->isVisible())
//         return;
    Client* c = active_popup_client ? active_popup_client : active_client;
    performWindowOperation( c, Options::CloseOp );
    }

/*!
  Starts keyboard move mode for the popup client
 */
void Workspace::slotWindowMove()
    {
    Client* c = active_popup_client ? active_popup_client : active_client;
    performWindowOperation( c, Options::UnrestrictedMoveOp );
    }

/*!
  Starts keyboard resize mode for the popup client
 */
void Workspace::slotWindowResize()
    {
    Client* c = active_popup_client ? active_popup_client : active_client;
    performWindowOperation( c, Options::UnrestrictedResizeOp );
    }

void Client::setShortcut( const QString& _cut )
    {
    QString cut = rules()->checkShortcut( _cut );
    if( cut.isEmpty())
        return setShortcutInternal( KShortcut());
// Format:
// base+(abcdef)<space>base+(abcdef)
// E.g. Alt+Ctrl+(ABCDEF) Win+X,Win+(ABCDEF)
    if( !cut.contains( '(' ) && !cut.contains( ')' ) && !cut.contains( ' ' ))
        {
        if( workspace()->shortcutAvailable( KShortcut( cut ), this ))
            setShortcutInternal( KShortcut( cut ));
        else
            setShortcutInternal( KShortcut());
        return;
        }
    QList< KShortcut > keys;
    QStringList groups = cut.split( ' ');
    for( QStringList::ConstIterator it = groups.constBegin();
         it != groups.constEnd();
         ++it )
        {
        QRegExp reg( "(.*\\+)\\((.*)\\)" );
        if( reg.indexIn( *it ) > -1 )
            {
            QString base = reg.cap( 1 );
            QString list = reg.cap( 2 );
            for( int i = 0;
                 i < list.length();
                 ++i )
                {
                KShortcut c( base + list[ i ] );
                if( !c.isEmpty())
                    keys.append( c );
                }
            }
        }
    for( QList< KShortcut >::ConstIterator it = keys.constBegin();
         it != keys.constEnd();
         ++it )
        {
        if( _shortcut == *it ) // current one is in the list
            return;
        }
    for( QList< KShortcut >::ConstIterator it = keys.constBegin();
         it != keys.constEnd();
         ++it )
        {
        if( workspace()->shortcutAvailable( *it, this ))
            {
            setShortcutInternal( *it );
            return;
            }
        }
    setShortcutInternal( KShortcut());
    }

void Client::setShortcutInternal( const KShortcut& cut )
    {
    if( _shortcut == cut )
        return;
    _shortcut = cut;
    updateCaption();
#if 0
    workspace()->clientShortcutUpdated( this );
#else
    // Workaround for kwin<->kglobalaccel deadlock, when KWin has X grab and the kded
    // kglobalaccel module tries to create the key grab. KWin should preferably grab
    // they keys itself anyway :(.
    QTimer::singleShot( 0, this, SLOT( delayedSetShortcut()));
#endif
    }

void Client::delayedSetShortcut()
    {
    workspace()->clientShortcutUpdated( this );
    }

bool Workspace::shortcutAvailable( const KShortcut& cut, Client* ignore ) const
    {
    // TODO check global shortcuts etc.
    for( ClientList::ConstIterator it = clients.constBegin();
         it != clients.constEnd();
         ++it )
        {
        if( (*it) != ignore && (*it)->shortcut() == cut )
            return false;
        }
    return true;
    }

} // namespace
