apps/dolphin/src/settings/viewpropsprogressinfo.cpp

   1 /***************************************************************************
   2  *   Copyright (C) 2006 by Peter Penz                                      *
   3  *   peter.penz@gmx.at                                                     *
   4  *                                                                         *
   5  *   This program is free software; you can redistribute it and/or modify  *
   6  *   it under the terms of the GNU General Public License as published by  *
   7  *   the Free Software Foundation; either version 2 of the License, or     *
   8  *   (at your option) any later version.                                   *
   9  *                                                                         *
  10  *   This program is distributed in the hope that it will be useful,       *
  11  *   but WITHOUT ANY WARRANTY; without even the implied warranty of        *
  12  *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the         *
  13  *   GNU General Public License for more details.                          *
  14  *                                                                         *
  15  *   You should have received a copy of the GNU General Public License     *
  16  *   along with this program; if not, write to the                         *
  17  *   Free Software Foundation, Inc.,                                       *
  18  *   51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA          *
  19  ***************************************************************************/
  20
  21 #include "viewpropsprogressinfo.h"
  22 #include "applyviewpropsjob.h"
  23 #include "viewproperties.h"
  24
  25 #include <QtGui/QLabel>
  26 #include <QtGui/QProgressBar>
  27 #include <QtCore/QTimer>
  28 #include <QtGui/QBoxLayout>
  29
  30 #include <assert.h>
  31 #include <klocale.h>
  32 #include <kio/jobclasses.h>
  33
  34 ViewPropsProgressInfo::ViewPropsProgressInfo(QWidget* parent,
  35                                              const KUrl& dir,
  36                                              const ViewProperties& viewProps) :
  37     KDialog(parent),
  38     m_dir(dir),
  39     m_viewProps(0),
  40     m_label(0),
  41     m_progressBar(0),
  42     m_dirSizeJob(0),
  43     m_applyViewPropsJob(0),
  44     m_timer(0)
  45 {
  46     const QSize minSize = minimumSize();
  47     setMinimumSize(QSize(320, minSize.height()));
  48
  49     setCaption(i18nc("@title:window", "Applying View Properties"));
  50     setButtons(KDialog::Cancel);
  51
  52     m_viewProps = new ViewProperties(dir);
  53     m_viewProps->setDirProperties(viewProps);
  54
  55     // the view properties are stored by the ViewPropsApplierJob, so prevent
  56     // that the view properties are saved twice:
  57     m_viewProps->setAutoSaveEnabled(false);
  58
  59     QWidget* main = new QWidget();
  60     QVBoxLayout* topLayout = new QVBoxLayout();
  61
  62     m_label = new QLabel(i18nc("@info:progress", "Counting folders: %1", 0), main);
  63     m_progressBar = new QProgressBar(main);
  64     m_progressBar->setMinimum(0);
  65     m_progressBar->setMaximum(0);
  66     m_progressBar->setValue(0);
  67
  68     topLayout->addWidget(m_label);
  69     topLayout->addWidget(m_progressBar);
  70
  71     main->setLayout(topLayout);
  72     setMainWidget(main);
  73
  74     // Use the directory size job to count the number of directories first. This
  75     // allows to give a progress indication for the user when applying the view
  76     // properties later.
  77     m_dirSizeJob = KIO::directorySize(dir);
  78     connect(m_dirSizeJob, SIGNAL(result(KJob*)),
  79             this, SLOT(applyViewProperties()));
  80
  81     // The directory size job cannot emit any progress signal, as it is not aware
  82     // about the total number of directories. Therefor a timer is triggered, which
  83     // periodically updates the current directory count.
  84     m_timer = new QTimer(this);
  85     connect(m_timer, SIGNAL(timeout()),
  86             this, SLOT(updateProgress()));
  87     m_timer->start(300);
  88
  89     connect(this, SIGNAL(cancelClicked()), this, SLOT(cancelApplying()));
  90 }
  91
  92 ViewPropsProgressInfo::~ViewPropsProgressInfo()
  93 {
  94     delete m_viewProps;
  95     m_viewProps = 0;
  96 }
  97
  98 void ViewPropsProgressInfo::closeEvent(QCloseEvent* event)
  99 {
 100     m_timer->stop();
 101     m_applyViewPropsJob = 0;
 102     KDialog::closeEvent(event);
 103 }
 104
 105 void ViewPropsProgressInfo::updateProgress()
 106 {
 107     if (m_dirSizeJob != 0) {
 108         const int subdirs = m_dirSizeJob->totalSubdirs();
 109         m_label->setText(i18nc("@info:progress", "Counting folders: %1", subdirs));
 110     }
 111
 112     if (m_applyViewPropsJob != 0) {
 113         const int progress = m_applyViewPropsJob->progress();
 114         m_progressBar->setValue(progress);
 115     }
 116 }
 117
 118 void ViewPropsProgressInfo::applyViewProperties()
 119 {
 120     if (m_dirSizeJob->error()) {
 121         return;
 122     }
 123
 124     const int subdirs = m_dirSizeJob->totalSubdirs();
 125     m_label->setText(i18nc("@info:progress", "Folders: %1", subdirs));
 126     m_progressBar->setMaximum(subdirs);
 127
 128     m_dirSizeJob = 0;
 129
 130     m_applyViewPropsJob = new ApplyViewPropsJob(m_dir, *m_viewProps);
 131     connect(m_applyViewPropsJob, SIGNAL(result(KJob*)),
 132             this, SLOT(close()));
 133 }
 134
 135 void ViewPropsProgressInfo::cancelApplying()
 136 {
 137     if (m_dirSizeJob != 0) {
 138         m_dirSizeJob->kill();
 139         m_dirSizeJob = 0;
 140     }
 141
 142     if (m_applyViewPropsJob != 0) {
 143         m_applyViewPropsJob->kill();
 144         m_applyViewPropsJob = 0;
 145     }
 146 }
 147
 148 #include "viewpropsprogressinfo.moc"