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