src/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 <QLabel>
  26 #include <QProgressBar>
  27 #include <QTimer>
  28 #include <QVBoxLayout>
  29
  30 #include <assert.h>
  31 #include <klocale.h>
  32 #include <kurl.h>
  33 #include <kio/jobclasses.h>
  34
  35 ViewPropsProgressInfo::ViewPropsProgressInfo(QWidget* parent,
  36                                              const KUrl& dir,
  37                                              const ViewProperties& viewProps) :
  38     KDialog(parent),
  39     m_dir(dir),
  40     m_viewProps(0),
  41     m_label(0),
  42     m_progressBar(0),
  43     m_dirSizeJob(0),
  44     m_applyViewPropsJob(0),
  45     m_timer(0)
  46 {
  47     setCaption(i18n("Applying view properties"));
  48     setButtons(KDialog::Cancel);
  49
  50     m_viewProps = new ViewProperties(dir);
  51     m_viewProps->setDirProperties(viewProps);
  52
  53     // the view properties are stored by the ViewPropsApplierJob, so prevent
  54     // that the view properties are saved twice:
  55     m_viewProps->setAutoSaveEnabled(false);
  56
  57     QWidget* main = new QWidget();
  58     QVBoxLayout* topLayout = new QVBoxLayout();
  59
  60     m_label = new QLabel(i18n("Counting folders: %1", 0), main);
  61     m_progressBar = new QProgressBar(main);
  62     m_progressBar->setMinimum(0);
  63     m_progressBar->setMaximum(0);
  64     m_progressBar->setValue(0);
  65
  66     topLayout->addWidget(m_label);
  67     topLayout->addWidget(m_progressBar);
  68
  69     main->setLayout(topLayout);
  70     setMainWidget(main);
  71
  72     // Use the directory size job to count the number of directories first. This
  73     // allows to give a progress indication for the user when applying the view
  74     // properties later.
  75     m_dirSizeJob = KIO::directorySize(dir);
  76     connect(m_dirSizeJob, SIGNAL(result(KJob*)),
  77             this, SLOT(applyViewProperties()));
  78
  79     // The directory size job cannot emit any progress signal, as it is not aware
  80     // about the total number of directories. Therefor a timer is triggered, which
  81     // periodically updates the current directory count.
  82     m_timer = new QTimer(this);
  83     connect(m_timer, SIGNAL(timeout()),
  84             this, SLOT(updateProgress()));
  85     m_timer->start(300);
  86
  87     connect(this, SIGNAL(cancelClicked()), this, SLOT(cancelApplying()));
  88 }
  89
  90 ViewPropsProgressInfo::~ViewPropsProgressInfo()
  91 {
  92     delete m_viewProps;
  93     m_viewProps = 0;
  94 }
  95
  96 void ViewPropsProgressInfo::closeEvent(QCloseEvent* event)
  97 {
  98     m_timer->stop();
  99     m_applyViewPropsJob = 0;
 100     KDialog::closeEvent(event);
 101 }
 102
 103 void ViewPropsProgressInfo::updateProgress()
 104 {
 105     if (m_dirSizeJob != 0) {
 106         const int subdirs = m_dirSizeJob->totalSubdirs();
 107         m_label->setText(i18n("Counting folders: %1", subdirs));
 108     }
 109
 110     if (m_applyViewPropsJob != 0) {
 111         const int progress = m_applyViewPropsJob->progress();
 112         m_progressBar->setValue(progress);
 113     }
 114 }
 115
 116 void ViewPropsProgressInfo::applyViewProperties()
 117 {
 118     if (m_dirSizeJob->error()) {
 119         return;
 120     }
 121
 122     const int subdirs = m_dirSizeJob->totalSubdirs();
 123     m_label->setText(i18n("Folders: %1", subdirs));
 124     m_progressBar->setMaximum(subdirs);
 125
 126     m_dirSizeJob = 0;
 127
 128     m_applyViewPropsJob = new ApplyViewPropsJob(m_dir, *m_viewProps);
 129     connect(m_applyViewPropsJob, SIGNAL(result(KJob*)),
 130             this, SLOT(close()));
 131 }
 132
 133 void ViewPropsProgressInfo::cancelApplying()
 134 {
 135     if (m_dirSizeJob != 0) {
 136         m_dirSizeJob->doKill();
 137     }
 138
 139     if (m_applyViewPropsJob != 0) {
 140         m_applyViewPropsJob->doKill();
 141     }
 142 }
 143
 144 #include "viewpropsprogressinfo.moc"