src/qtui/settingsdlg.cpp

   1 /***************************************************************************
   2  *   Copyright (C) 2005-09 by the Quassel Project                          *
   3  *   devel@quassel-irc.org                                                 *
   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) version 3.                                           *
   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  *                                                                         *
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  18  *   59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.             *
  19  ***************************************************************************/
  20
  21 #include "settingsdlg.h"
  22
  23 #include "iconloader.h"
  24
  25 SettingsDlg::SettingsDlg(QWidget *parent)
  26   : QDialog(parent),
  27     _currentPage(0)
  28 {
  29   ui.setupUi(this);
  30   setModal(true);
  31   setAttribute(Qt::WA_DeleteOnClose, true);
  32   setWindowIcon(SmallIcon("configure"));
  33
  34   updateGeometry();
  35
  36   ui.settingsTree->setRootIsDecorated(false);
  37
  38   connect(ui.settingsTree, SIGNAL(itemSelectionChanged()), this, SLOT(itemSelected()));
  39   connect(ui.buttonBox, SIGNAL(clicked(QAbstractButton *)), this, SLOT(buttonClicked(QAbstractButton *)));
  40
  41   setButtonStates();
  42 }
  43
  44 void SettingsDlg::registerSettingsPage(SettingsPage *sp) {
  45   sp->setParent(ui.settingsStack);
  46   ui.settingsStack->addWidget(sp);
  47
  48   connect(sp, SIGNAL(changed(bool)), this, SLOT(setButtonStates()));
  49
  50   QTreeWidgetItem *cat;
  51   QList<QTreeWidgetItem *> cats = ui.settingsTree->findItems(sp->category(), Qt::MatchExactly);
  52   if(!cats.count()) {
  53     cat = new QTreeWidgetItem(ui.settingsTree, QStringList(sp->category()));
  54     cat->setExpanded(true);
  55     cat->setFlags(Qt::ItemIsEnabled | Qt::ItemIsSelectable);
  56   } else {
  57     cat = cats[0];
  58   }
  59
  60   QTreeWidgetItem *item;
  61   if(sp->title().isEmpty())
  62     item = cat;
  63   else
  64     item = new QTreeWidgetItem(cat, QStringList(sp->title()));
  65
  66   item->setData(0, SettingsPageRole, QVariant::fromValue<QObject *>(sp));
  67   ui.settingsTree->setMinimumWidth(ui.settingsTree->header()->sectionSizeHint(0) + 5);
  68   pageIsLoaded[sp] = false;
  69   if(!ui.settingsTree->selectedItems().count())
  70     ui.settingsTree->setCurrentItem(item);
  71 }
  72
  73 void SettingsDlg::selectPage(SettingsPage *sp) {
  74   if(!sp) {
  75     _currentPage = 0;
  76     ui.settingsStack->setCurrentIndex(0);
  77     ui.pageTitle->setText(tr("Settings"));
  78     return;
  79   }
  80
  81   if(!pageIsLoaded[sp]) {
  82     sp->load();
  83     pageIsLoaded[sp] = true;
  84   }
  85
  86   if(sp != currentPage() && currentPage() != 0 && currentPage()->hasChanged()) {
  87     int ret = QMessageBox::warning(this, tr("Save changes"),
  88                                   tr("There are unsaved changes on the current configuration page. Would you like to apply your changes now?"),
  89                                   QMessageBox::Discard|QMessageBox::Save|QMessageBox::Cancel, QMessageBox::Cancel);
  90     if(ret == QMessageBox::Save) {
  91       if(!applyChanges()) sp = currentPage();
  92     } else if(ret == QMessageBox::Discard) {
  93       undoChanges();
  94     } else sp = currentPage();
  95   }
  96
  97   if(sp != currentPage()) {
  98     if(sp->title().isEmpty()) {
  99       ui.pageTitle->setText(sp->category());
 100       setWindowTitle(tr("Configure %1").arg(sp->category()));
 101     }
 102     else {
 103       ui.pageTitle->setText(sp->title());
 104       setWindowTitle(tr("Configure %1").arg(sp->title()));
 105     }
 106
 107     ui.settingsStack->setCurrentWidget(sp);
 108     _currentPage = sp;
 109   }
 110   setButtonStates();
 111 }
 112
 113 void SettingsDlg::itemSelected() {
 114   QList<QTreeWidgetItem *> items = ui.settingsTree->selectedItems();
 115   SettingsPage *sp = 0;
 116   if(!items.isEmpty()) {
 117     sp = qobject_cast<SettingsPage *>(items[0]->data(0, SettingsPageRole).value<QObject *>());
 118   }
 119   selectPage(sp);
 120 }
 121
 122 void SettingsDlg::setButtonStates() {
 123   SettingsPage *sp = currentPage();
 124   ui.buttonBox->button(QDialogButtonBox::Apply)->setEnabled(sp && sp->hasChanged());
 125   ui.buttonBox->button(QDialogButtonBox::Reset)->setEnabled(sp && sp->hasChanged());
 126   ui.buttonBox->button(QDialogButtonBox::RestoreDefaults)->setEnabled(sp && sp->hasDefaults());
 127 }
 128
 129 void SettingsDlg::buttonClicked(QAbstractButton *button) {
 130   switch(ui.buttonBox->standardButton(button)) {
 131     case QDialogButtonBox::Ok:
 132       if(currentPage() && currentPage()->hasChanged()) {
 133         if(applyChanges()) accept();
 134       } else accept();
 135       break;
 136     case QDialogButtonBox::Apply:
 137       applyChanges();
 138       break;
 139     case QDialogButtonBox::Cancel:
 140       undoChanges();
 141       reject();
 142       break;
 143     case QDialogButtonBox::Reset:
 144       reload();
 145       break;
 146     case QDialogButtonBox::RestoreDefaults:
 147       loadDefaults();
 148       break;
 149     default:
 150       break;
 151   }
 152 }
 153
 154 bool SettingsDlg::applyChanges() {
 155   if(!currentPage()) return false;
 156   if(currentPage()->aboutToSave()) {
 157     currentPage()->save();
 158     return true;
 159   }
 160   return false;
 161 }
 162
 163 void SettingsDlg::undoChanges() {
 164   if(currentPage()) {
 165     currentPage()->load();
 166   }
 167 }
 168
 169 void SettingsDlg::reload() {
 170   if(!currentPage()) return;
 171   int ret = QMessageBox::question(this, tr("Reload Settings"), tr("Do you like to reload the settings, undoing your changes on this page?"),
 172                                   QMessageBox::Yes|QMessageBox::No, QMessageBox::No);
 173   if(ret == QMessageBox::Yes) {
 174     currentPage()->load();
 175   }
 176 }
 177
 178 void SettingsDlg::loadDefaults() {
 179   if(!currentPage()) return;
 180   int ret = QMessageBox::question(this, tr("Restore Defaults"), tr("Do you like to restore the default values for this page?"),
 181                                   QMessageBox::RestoreDefaults|QMessageBox::Cancel, QMessageBox::Cancel);
 182   if(ret == QMessageBox::RestoreDefaults) {
 183     currentPage()->defaults();
 184   }
 185 }