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/*
 * Copyright (c) 2004 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, write to the Free Software
 *  Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
 */

#include "detectwidget.h"

#include <kapplication.h>
#include <klocale.h>
#include <kdebug.h>
#include <twin.h>
#include <tqlabel.h>
#include <tqradiobutton.h>
#include <tqcheckbox.h>

#include <X11/Xlib.h>
#include <X11/Xatom.h>
#include <X11/Xutil.h>
#include <fixx11h.h>

namespace KWinInternal
{

DetectWidget::DetectWidget( TQWidget* parent, const char* name )
: DetectWidgetBase( parent, name )
    {
    }

DetectDialog::DetectDialog( TQWidget* parent, const char* name )
: KDialogBase( parent, name, true, "", Ok | Cancel )
, grabber( NULL )
    {
    widget = new DetectWidget( this );
    setMainWidget( widget );
    }

void DetectDialog::detect( WId window )
    {
    if( window == 0 )
        selectWindow();
    else
        readWindow( window );
    }

void DetectDialog::readWindow( WId w )
    {
    if( w == 0 )
        {
        emit detectionDone( false );
        return;
        }
    info = KWin::windowInfo( w, -1U, -1U ); // read everything
    if( !info.valid())
        {
        emit detectionDone( false );
        return;
        }
    wmclass_class = info.windowClassClass();
    wmclass_name = info.windowClassName();
    role = info.windowRole();
    type = info.windowType( NET::NormalMask | NET::DesktopMask | NET::DockMask
        | NET::ToolbarMask | NET::MenuMask | NET::DialogMask | NET::OverrideMask | NET::TopMenuMask
        | NET::UtilityMask | NET::SplashMask );
    title = info.name();
    extrarole = ""; // TODO
    machine = info.clientMachine();
    executeDialog();
    }

void DetectDialog::executeDialog()
    {
    static const char* const types[] =
        {
        I18N_NOOP( "Normal Window" ),
        I18N_NOOP( "Desktop" ),
        I18N_NOOP( "Dock (panel)" ),
        I18N_NOOP( "Toolbar" ),
        I18N_NOOP( "Torn-Off Menu" ),
        I18N_NOOP( "Dialog Window" ),
        I18N_NOOP( "Override Type" ),
        I18N_NOOP( "Standalone Menubar" ),
        I18N_NOOP( "Utility Window" ),
        I18N_NOOP( "Splash Screen" )
        };
    widget->class_label->setText( wmclass_class + " (" + wmclass_name + ' ' + wmclass_class + ")" );
    widget->role_label->setText( role );
    widget->use_role->setEnabled( !role.isEmpty());
    if( widget->use_role->isEnabled())
        widget->use_role->setChecked( true );
    else
        widget->use_whole_class->setChecked( true );
    if( type == NET::Unknown )
        widget->type_label->setText( i18n( "Unknown - will be treated as Normal Window" ));
    else
        widget->type_label->setText( i18n( types[ type ] ));
    widget->title_label->setText( title );
    widget->extrarole_label->setText( extrarole );
    widget->machine_label->setText( machine );
    emit detectionDone( exec() == TQDialog::Accepted );
    }

TQCString DetectDialog::selectedClass() const
    {
    if( widget->use_class->isChecked() || widget->use_role->isChecked())
        return wmclass_class;
    return wmclass_name + ' ' + wmclass_class;
    }

bool DetectDialog::selectedWholeClass() const
    {
    return widget->use_whole_class->isChecked();
    }

TQCString DetectDialog::selectedRole() const
    {
    if( widget->use_role->isChecked())
        return role;
    return "";
    }

TQString DetectDialog::selectedTitle() const
    {
    return title;
    }

Rules::StringMatch DetectDialog::titleMatch() const
    {
    return widget->match_title->isChecked() ? Rules::ExactMatch : Rules::UnimportantMatch;
    }

bool DetectDialog::selectedWholeApp() const
    {
    return widget->use_class->isChecked();
    }

NET::WindowType DetectDialog::selectedType() const
    {
    return type;
    }

TQCString DetectDialog::selectedMachine() const
    {
    return machine;
    }

void DetectDialog::selectWindow()
    {
    // use a dialog, so that all user input is blocked
    // use WX11BypassWM and moving away so that it's not actually visible
    // grab only mouse, so that keyboard can be used e.g. for switching windows
    grabber = new TQDialog( NULL, NULL, true, (WFlags)WX11BypassWM );
    grabber->move( -1000, -1000 );
    grabber->show();
    grabber->grabMouse( tqcrossCursor );
    grabber->installEventFilter( this );
    }

bool DetectDialog::eventFilter( TQObject* o, TQEvent* e )
    {
    if( TQT_BASE_OBJECT(o) != TQT_BASE_OBJECT(grabber) )
        return false;
    if( e->type() != TQEvent::MouseButtonRelease )
        return false;
    delete grabber;
    grabber = NULL;
    if( TQT_TQMOUSEEVENT( e )->button() != Qt::LeftButton )
        {
        emit detectionDone( false );
        return true;
        }
    readWindow( findWindow());
    return true;
    }

WId DetectDialog::findWindow()
    {
    Window root;
    Window child;
    uint mask;
    int rootX, rootY, x, y;
    Window parent = qt_xrootwin();
    Atom wm_state = XInternAtom( qt_xdisplay(), "WM_STATE", False );
    for( int i = 0;
         i < 10;
         ++i )
        {
        XQueryPointer( qt_xdisplay(), parent, &root, &child,
            &rootX, &rootY, &x, &y, &mask );
        if( child == None )
            return 0;
        Atom type;
        int format;
        unsigned long nitems, after;
        unsigned char* prop;
        if( XGetWindowProperty( qt_xdisplay(), child, wm_state, 0, 0, False, AnyPropertyType,
	    &type, &format, &nitems, &after, &prop ) == Success )
            {
	    if( prop != NULL )
	        XFree( prop );
	    if( type != None )
	        return child;
            }
        parent = child;
        }
    return 0;
    }

} // namespace

#include "detectwidget.moc"