kmail/statusbarprogresswidget.cpp

/*
  statusbarprogresswidget.cpp

  This file is part of KMail, the KDE mail client.

  (C) 2004 KMail Authors
  Includes StatusbarProgressWidget which is based on KIOLittleProgressDlg
  by Matt Koss <koss@miesto.sk>

  KMail is free software; you can redistribute it and/or modify it
  under the terms of the GNU General Public License, version 2, as
  published by the Free Software Foundation.

  KMail 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., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA

  In addition, as a special exception, the copyright holders give
  permission to link the code of this program with any edition of
  the Qt library by Trolltech AS, Norway (or with modified versions
  of Qt that use the same license as Qt), and distribute linked
  combinations including the two.  You must obey the GNU General
  Public License in all respects for all of the code used other than
  Qt.  If you modify this file, you may extend this exception to
  your version of the file, but you are not obligated to do so.  If
  you do not wish to do so, delete this exception statement from
  your version.
*/


#include "ssllabel.h"
using KMail::SSLLabel;
#include "progressmanager.h"
using KMail::ProgressItem;
using KMail::ProgressManager;

#include <kprogress.h>
#include <kiconloader.h>
#include <kdebug.h>


#include <qlabel.h>
#include <qpushbutton.h>
#include <qtooltip.h>
#include <klocale.h>
#include <qlayout.h>
#include <qwidgetstack.h>
#include <qframe.h>
#include <kmkernel.h> // for the progress dialog

#include "kmmainwidget.h"
#include "statusbarprogresswidget.h"


//-----------------------------------------------------------------------------
StatusbarProgressWidget::StatusbarProgressWidget( KMMainWidget* mainWidget, QWidget* parent, bool button )
  : QFrame( parent ), m_mainWidget( mainWidget ), mCurrentItem( 0 )
{
  m_bShowButton = button;
  int w = fontMetrics().width( " 999.9 kB/s 00:00:01 " ) + 8;
  box = new QHBoxLayout( this, 0, 0 );

  m_pButton = new QPushButton( this );
  m_pButton->setSizePolicy( QSizePolicy( QSizePolicy::Minimum,
                                         QSizePolicy::Minimum ) );
  m_pButton->setPixmap( SmallIcon( "up" ) );
  box->addWidget( m_pButton  );
  stack = new QWidgetStack( this );
  stack->setMaximumHeight( fontMetrics().height() );
  box->addWidget( stack );

  m_sslLabel = new SSLLabel( this );
  box->addWidget( m_sslLabel );

  QToolTip::add( m_pButton, i18n("Open detailed progress dialog") );

  m_pProgressBar = new KProgress( this );
  m_pProgressBar->setLineWidth( 1 );
  m_pProgressBar->setFrameStyle( QFrame::Box );
  m_pProgressBar->installEventFilter( this );
  m_pProgressBar->setMinimumWidth( w );
  stack->addWidget( m_pProgressBar, 1 );

  m_pLabel = new QLabel( "", this );
  m_pLabel->setAlignment( AlignHCenter | AlignVCenter );
  m_pLabel->installEventFilter( this );
  m_pLabel->setMinimumWidth( w );
  stack->addWidget( m_pLabel, 2 );
  m_pButton->setMaximumHeight( fontMetrics().height() );
  setMinimumWidth( minimumSizeHint().width() );

  mode = None;
  setMode();

  connect( m_pButton, SIGNAL( clicked() ),
           mainWidget, SLOT( slotToggleProgressDialog() ) );

  connect ( ProgressManager::instance(), SIGNAL( progressItemAdded( ProgressItem * ) ),
            this, SLOT( slotProgressItemAdded( ProgressItem * ) ) );
  connect ( ProgressManager::instance(), SIGNAL( progressItemCompleted( ProgressItem * ) ),
            this, SLOT( slotProgressItemCompleted( ProgressItem * ) ) );

  connect ( mainWidget, SIGNAL( progressDialogVisible( bool )),
            this, SLOT( slotProgressDialogVisible( bool ) ) );
}

void StatusbarProgressWidget::slotProgressItemAdded( ProgressItem *item )
{
  if ( item->parent() ) return; // we are only interested in top level items
  if ( mCurrentItem ) {
    disconnect ( mCurrentItem, SIGNAL( progressItemProgress( ProgressItem *, unsigned int ) ),
                 this, SLOT( slotProgressItemProgress( ProgressItem *, unsigned int ) ) );
  }
  mCurrentItem = item;
  connect ( mCurrentItem, SIGNAL( progressItemProgress( ProgressItem *, unsigned int ) ),
            this, SLOT( slotProgressItemProgress( ProgressItem *, unsigned int ) ) );
  if ( mode == None ) {
    mode = Progress;
    setMode();
  }
}

void StatusbarProgressWidget::slotProgressItemCompleted( ProgressItem *item )
{
  if ( mCurrentItem == item )
    mCurrentItem = 0;
  if ( ProgressManager::instance()->isEmpty() ) {
    // Done. In 5s the progress-widget will close, then we can clean up the statusbar
    QTimer::singleShot( 5000, this, SLOT( slotClean() ) );
  }
}

void StatusbarProgressWidget::slotProgressItemProgress( ProgressItem *item, unsigned int value )
{
  Q_ASSERT( item == mCurrentItem); // the only one we should be connected to
  m_pProgressBar->setValue( value );
}

void StatusbarProgressWidget::slotSetSSL( bool ssl )
{
  m_sslLabel->setEncrypted( ssl );
}

void StatusbarProgressWidget::setMode() {
  switch ( mode ) {
  case None:
    if ( m_bShowButton ) {
      m_pButton->hide();
    }
    m_sslLabel->setState( SSLLabel::Done );
    // show the empty label in order to make the status bar look better
    stack->show();
    stack->raiseWidget( m_pLabel );
    break;

#if 0
  case Clean:
    if ( m_bShowButton ) {
      m_pButton->hide();
    }
    m_sslLabel->setState( SSLLabel::Clean );
    // show the empty label in order to make the status bar look better
    stack->show();
    stack->raiseWidget( m_pLabel );
    break;
#endif

  case Label:
    if ( m_bShowButton ) {
      m_pButton->show();
    }
    m_sslLabel->setState( m_sslLabel->lastState() );
    stack->show();
    stack->raiseWidget( m_pLabel );
    break;

  case Progress:
    stack->show();
    stack->raiseWidget( m_pProgressBar );
    if ( m_bShowButton ) {
      m_pButton->show();
    }
    m_sslLabel->setState( m_sslLabel->lastState() );
    break;
  }
}

void StatusbarProgressWidget::slotClean()
{
  // check if a new item showed up since we started the timer. If not, clear
  if ( ProgressManager::instance()->isEmpty() ) {
    m_pProgressBar->setValue( 0 );
    m_pLabel->clear();
    mode = None;
    setMode();
  }
}

bool StatusbarProgressWidget::eventFilter( QObject *, QEvent *ev )
{
  if ( ev->type() == QEvent::MouseButtonPress ) {
    QMouseEvent *e = (QMouseEvent*)ev;

    if ( e->button() == LeftButton && mode != None ) {    // toggle view on left mouse button
      // Consensus seems to be that we should show/hide the fancy dialog when the user
      // clicks anywhere in the small one.
      m_mainWidget->slotToggleProgressDialog();
      return true;
    }
  }
  return false;
}

void StatusbarProgressWidget::slotProgressDialogVisible( bool b )
{
  // Hide the progress bar when the detailed one is showing
  if ( b ) {
    mode = Label;
    m_pButton->setPixmap( SmallIcon( "down" ) );
  } else {
    if ( mode == Label )  // not if None already
      mode = Progress;
    m_pButton->setPixmap( SmallIcon( "up" ) );
  }
  setMode();
}

#include "statusbarprogresswidget.moc"