/**********************************************************************
** Copyright (C) 2000 Trolltech AS.  All rights reserved.
**
** This file is part of Qtopia Environment.
**
** This file may be distributed and/or modified under the terms of the
** GNU General Public License version 2 as published by the Free Software
** Foundation and appearing in the file LICENSE.GPL included in the
** packaging of this file.
**
** This file is provided AS IS with NO WARRANTY OF ANY KIND, INCLUDING THE
** WARRANTY OF DESIGN, MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
**
** See http://www.trolltech.com/gpl/ for GPL licensing information.
**
** Contact info@trolltech.com if any conditions of this licensing are
** not clear to you.
**
*********************************************************************/

#include "startmenu.h"
#include "inputmethods.h"
#include "runningappbar.h"
#include "systray.h"
#include "calibrate.h"
#include "wait.h"
#include "appicons.h"

#include "taskbar.h"
#include "desktop.h"

#include <qpe/qpeapplication.h>
#include <qpe/qcopenvelope_qws.h>
#include <qpe/global.h>

#if defined( QT_QWS_SL5XXX ) || defined( QT_QWS_IPAQ )
#include <qpe/custom.h>
#endif

#include <opie/odevice.h>

#include <qlabel.h>
#include <qlayout.h>
#include <qtimer.h>
#include <qwindowsystem_qws.h>
#include <qwidgetstack.h>

#if defined( Q_WS_QWS )
#include <qwsdisplay_qws.h>
#include <qgfx_qws.h>
#endif


using namespace Opie;

#define FACTORY(T) \
    static QWidget *new##T( bool maximized ) { \
  QWidget *w = new T( 0, "test", QWidget::WDestructiveClose | QWidget::WGroupLeader ); \
  if ( maximized ) { \
      if ( qApp->desktop()->width() <= 350 ) { \
    w->showMaximized(); \
      } else { \
    w->resize( QSize( 300, 300 ) ); \
      } \
  } \
  w->show(); \
  return w; \
    }


#ifdef SINGLE_APP
#define APP(a,b,c,d) FACTORY(b)
#include "../launcher/apps.h"
#undef APP
#endif // SINGLE_APP

static Global::Command builtins[] = {

#ifdef SINGLE_APP
#define APP(a,b,c,d) { a, new##b, c },
#include "../launcher/apps.h"
#undef APP
#endif

#if defined(QT_QWS_IPAQ) || defined(QT_QWS_CASSIOPEIA) || defined(QT_QWS_SL5XXX)
        { "calibrate",          TaskBar::calibrate, 1, 0 },
#endif
#if !defined(QT_QWS_CASSIOPEIA)
  { "shutdown",           Global::shutdown,   1, 0 },
//  { "run",                run,      1, 0 },
#endif

  { 0,            TaskBar::calibrate, 0, 0 },
};

static bool initNumLock()
{
#ifdef QPE_INITIAL_NUMLOCK_STATE
    QPE_INITIAL_NUMLOCK_STATE
#endif
    return FALSE;
}

class LockKeyState : public QWidget
{
public:
    LockKeyState( QWidget *parent ) :
  QWidget(parent),
  nl(initNumLock()), cl(FALSE)
    {
  nl_pm = Resource::loadPixmap("numlock");
  cl_pm = Resource::loadPixmap("capslock");
    }
    QSize sizeHint() const
    {
  return QSize(nl_pm.width()+2,nl_pm.width()+nl_pm.height()+1);
    }
    void toggleNumLockState()
    {
  nl = !nl; repaint();
    }
    void toggleCapsLockState()
    {
  cl = !cl; repaint();
    }
    void paintEvent( QPaintEvent * )
    {
  int y = (height()-sizeHint().height())/2;
  QPainter p(this);
  if ( nl )
      p.drawPixmap(1,y,nl_pm);
  if ( cl )
      p.drawPixmap(1,y+nl_pm.height()+1,cl_pm);
    }
private:
    QPixmap nl_pm, cl_pm;
    bool nl, cl;
};

TaskBar::~TaskBar()
{
}


TaskBar::TaskBar() : QHBox(0, 0, WStyle_Customize | WStyle_Tool | WStyle_StaysOnTop | WGroupLeader)
{
    Global::setBuiltinCommands(builtins);

    sm = new StartMenu( this );

    inputMethods = new InputMethods( this );
    connect( inputMethods, SIGNAL(inputToggled(bool)),
       this, SLOT(calcMaxWindowRect()) );
    //new QuickLauncher( this );

    stack = new QWidgetStack( this );
    stack->setSizePolicy( QSizePolicy( QSizePolicy::Expanding, QSizePolicy::Minimum ) );
    label = new QLabel(stack);

    //mru = new MRUList( stack );
    //stack->raiseWidget( mru );

    runningAppBar = new RunningAppBar(stack);
    stack->raiseWidget(runningAppBar);

    waitIcon = new Wait( this );
    (void) new AppIcons( this );

    sysTray = new SysTray( this );

    // ## make customizable in some way? 
    lockState = new LockKeyState( this );

#if defined(Q_WS_QWS)
#if !defined(QT_NO_COP)
    QCopChannel *channel = new QCopChannel( "QPE/TaskBar", this );
    connect( channel, SIGNAL(received(const QCString&, const QByteArray&)),
  this, SLOT(receive(const QCString&, const QByteArray&)) );
#endif
#endif
    waitTimer = new QTimer( this );
    connect( waitTimer, SIGNAL( timeout() ), this, SLOT( stopWait() ) );
    clearer = new QTimer( this );
    QObject::connect(clearer, SIGNAL(timeout()), SLOT(clearStatusBar()));
    QObject::connect(clearer, SIGNAL(timeout()), sysTray, SLOT(show()));
}

void TaskBar::setStatusMessage( const QString &text )
{
    if ( !text.isEmpty() ) {
	label->setText( text );
	stack->raiseWidget( label );
	if ( sysTray && ( label->fontMetrics().width( text ) > label->width() ) )
	    sysTray->hide();
	clearer->start( 3000, TRUE );
    } else {
	clearStatusBar();
    }
}

void TaskBar::clearStatusBar()
{
    label->clear();
    stack->raiseWidget(runningAppBar);
     //  stack->raiseWidget( mru );
}

void TaskBar::startWait()
{
    waitIcon->setWaiting( true );
    // a catchall stop after 10 seconds...
    waitTimer->start( 10 * 1000, true );
}

void TaskBar::stopWait(const QString& /*app*/)
{
    waitTimer->stop();
    //mru->addTask(sm->execToLink(app));
    waitIcon->setWaiting( false );
}

void TaskBar::stopWait()
{
    waitTimer->stop();

    waitIcon->setWaiting( false );
}

void TaskBar::resizeEvent( QResizeEvent *e )
{
    QHBox::resizeEvent( e );
    calcMaxWindowRect();
}

void TaskBar::styleChange( QStyle &s )
{
    QHBox::styleChange( s );
    calcMaxWindowRect();
}

void TaskBar::calcMaxWindowRect()
{
#ifdef Q_WS_QWS
    QRect wr;
    int displayWidth  = qApp->desktop()->width();
    QRect ir = inputMethods->inputRect();
    if ( ir.isValid() ) {
  wr.setCoords( 0, 0, displayWidth-1, ir.top()-1 );
    } else {
  wr.setCoords( 0, 0, displayWidth-1, y()-1 );
    }

#if QT_VERSION < 300
    QWSServer::setMaxWindowRect( qt_screen->mapToDevice(wr,
  QSize(qt_screen->width(),qt_screen->height()))
  );
#else
    QWSServer::setMaxWindowRect( wr );
#endif
#endif
}

void TaskBar::receive( const QCString &msg, const QByteArray &data )
{
	QDataStream stream( data, IO_ReadOnly );
	if ( msg == "message(QString)" ) {
		QString text;
		stream >> text;
		setStatusMessage( text );
	} else if ( msg == "hideInputMethod()" ) {
		inputMethods->hideInputMethod();
	} else if ( msg == "showInputMethod()" ) {
		inputMethods->showInputMethod();
	} else if ( msg == "reloadInputMethods()" ) {
		inputMethods->loadInputMethods();
	} else if ( msg == "reloadApps()" ) {
		sm->reloadApps();    			
	} else if ( msg == "reloadApplets()" ) {
		sysTray->clearApplets();
		sysTray->addApplets();
		sm->reloadApplets();
	} else if ( msg == "soundAlarm()" ) {
		DesktopApplication::soundAlarm ( );
	}
	else if ( msg == "setLed(int,bool)" ) {
		int led, status;
		stream >> led >> status;

		QValueList <OLed> ll = ODevice::inst ( )-> ledList ( );
		if ( ll. count ( ))	{
			OLed l = ll. contains ( Led_Mail ) ? Led_Mail : ll [0];
			bool canblink = ODevice::inst ( )-> ledStateList ( l ). contains ( Led_BlinkSlow );
			
			ODevice::inst ( )-> setLedState ( l, status ? ( canblink ? Led_BlinkSlow : Led_On ) : Led_Off );
		}
	}
	else if ( msg == "toggleMenu()" ) {
		if ( sm-> launchMenu-> isVisible ( ))
			sm-> launch ( );
		else {
			QCopEnvelope e ( "QPE/System", "toggleApplicationMenu()" );
		}
	}
	else if ( msg == "toggleStartMenu()" ) {
		sm-> launch ( );
	}
}

QWidget *TaskBar::calibrate(bool)
{
#ifdef Q_WS_QWS
    Calibrate *c = new Calibrate;
    c->show();
    return c;
#else
    return 0;
#endif
}

void TaskBar::toggleNumLockState()
{
    if ( lockState ) lockState->toggleNumLockState();
}

void TaskBar::toggleCapsLockState()
{
    if ( lockState ) lockState->toggleCapsLockState();
}

void TaskBar::toggleSymbolInput()
{
    if ( inputMethods->currentShown() == "Unicode" ) {
  inputMethods->hideInputMethod();
    } else {
  inputMethods->showInputMethod("Unicode");
    }
}

bool TaskBar::recoverMemory()
{
    //eturn mru->quitOldApps();
    return true;
}