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
  24 #include <QLabel>
  25 #include <QProgressBar>
  26 #include <QTimer>
  27 #include <QVBoxLayout>
  28 #include <QDialogButtonBox>
  29 #include <QPushButton>
  30
  31 #include <KConfigGroup>
  32 #include <KLocalizedString>
  33 #include <KIO/JobClasses>
  34
  35 #include <views/viewproperties.h>
  36
  37 ViewPropsProgressInfo::ViewPropsProgressInfo(QWidget* parent,
  38                                              const QUrl& dir,
  39                                              const ViewProperties& viewProps) :
  40     QDialog(parent),
  41     m_dir(dir),
  42     m_viewProps(0),
  43     m_label(0),
  44     m_progressBar(0),
  45     m_dirSizeJob(0),
  46     m_applyViewPropsJob(0),
  47     m_timer(0)
  48 {
  49     const QSize minSize = minimumSize();
  50     setMinimumSize(QSize(320, minSize.height()));
  51     setWindowTitle(i18nc("@title:window", "Applying View Properties"));
  52     setSizePolicy(QSizePolicy::Preferred, QSizePolicy::Minimum);
  53
  54     m_viewProps = new ViewProperties(dir);
  55     m_viewProps->setDirProperties(viewProps);
  56
  57     // the view properties are stored by the ViewPropsApplierJob, so prevent
  58     // that the view properties are saved twice:
  59     m_viewProps->setAutoSaveEnabled(false);
  60
  61     auto layout = new QVBoxLayout(this);
  62     setLayout(layout);
  63
  64     m_label = new QLabel(i18nc("@info:progress", "Counting folders: %1", 0), this);
  65     layout->addWidget(m_label);
  66
  67     m_progressBar = new QProgressBar(this);
  68     m_progressBar->setMinimum(0);
  69     m_progressBar->setMaximum(0);
  70     m_progressBar->setValue(0);
  71     layout->addWidget(m_progressBar);
  72
  73     layout->addStretch();
  74
  75     auto buttonBox = new QDialogButtonBox(QDialogButtonBox::Cancel, this);
  76     connect(buttonBox, &QDialogButtonBox::accepted, this, &ViewPropsProgressInfo::accept);
  77     connect(buttonBox, &QDialogButtonBox::rejected, this, &ViewPropsProgressInfo::reject);
  78     layout->addWidget(buttonBox);
  79
  80     // Use the directory size job to count the number of directories first. This
  81     // allows to give a progress indication for the user when applying the view
  82     // properties later.
  83     m_dirSizeJob = KIO::directorySize(dir);
  84     connect(m_dirSizeJob, &KIO::DirectorySizeJob::result,
  85             this, &ViewPropsProgressInfo::applyViewProperties);
  86
  87     // The directory size job cannot emit any progress signal, as it is not aware
  88     // about the total number of directories. Therefor a timer is triggered, which
  89     // periodically updates the current directory count.
  90     m_timer = new QTimer(this);
  91     connect(m_timer, &QTimer::timeout,
  92             this, &ViewPropsProgressInfo::updateProgress);
  93     m_timer->start(300);
  94 }
  95
  96 ViewPropsProgressInfo::~ViewPropsProgressInfo()
  97 {
  98     delete m_viewProps;
  99     m_viewProps = 0;
 100 }
 101
 102 void ViewPropsProgressInfo::closeEvent(QCloseEvent* event)
 103 {
 104     m_timer->stop();
 105     m_applyViewPropsJob = 0;
 106     QDialog::closeEvent(event);
 107 }
 108
 109 void ViewPropsProgressInfo::reject()
 110 {
 111     if (m_dirSizeJob) {
 112         m_dirSizeJob->kill();
 113         m_dirSizeJob = 0;
 114     }
 115
 116     if (m_applyViewPropsJob) {
 117         m_applyViewPropsJob->kill();
 118         m_applyViewPropsJob = 0;
 119     }
 120
 121     QDialog::reject();
 122 }
 123
 124 void ViewPropsProgressInfo::updateProgress()
 125 {
 126     if (m_dirSizeJob) {
 127         const int subdirs = m_dirSizeJob->totalSubdirs();
 128         m_label->setText(i18nc("@info:progress", "Counting folders: %1", subdirs));
 129     }
 130
 131     if (m_applyViewPropsJob) {
 132         const int progress = m_applyViewPropsJob->progress();
 133         m_progressBar->setValue(progress);
 134     }
 135 }
 136
 137 void ViewPropsProgressInfo::applyViewProperties()
 138 {
 139     if (m_dirSizeJob->error()) {
 140         return;
 141     }
 142
 143     const int subdirs = m_dirSizeJob->totalSubdirs();
 144     m_label->setText(i18nc("@info:progress", "Folders: %1", subdirs));
 145     m_progressBar->setMaximum(subdirs);
 146
 147     m_dirSizeJob = 0;
 148
 149     m_applyViewPropsJob = new ApplyViewPropsJob(m_dir, *m_viewProps);
 150     connect(m_applyViewPropsJob, &ApplyViewPropsJob::result,
 151             this, &ViewPropsProgressInfo::close);
 152 }
 153