Warning, file /plasma/libksysguard/processui/ksysguardprocesslist.cpp was not indexed or was modified since last indexation (in which case cross-reference links may be missing, inaccurate or erroneous).

 /*
     KSysGuard, the KDE System Guard
 
     SPDX-FileCopyrightText: 1999-2001 Chris Schlaeger <cs@kde.org>
     SPDX-FileCopyrightText: 2006-2007 John Tapsell <john.tapsell@kde.org>
 
     SPDX-License-Identifier: LGPL-2.0-or-later
 
 */
 
 #include "ksysguardprocesslist.h"
 
 #include "../config-ksysguard.h"
 
 #include <QAbstractItemModel>
 #include <QAction>
 #include <QActionGroup>
 #include <QApplication>
 #include <QComboBox>
 #include <QDBusMetaType>
 #include <QDialog>
 #include <QHeaderView>
 #include <QHideEvent>
 #include <QIcon>
 #include <QLineEdit>
 #include <QList>
 #include <QMenu>
 #include <QPainter>
 #include <QPainterPath>
 #include <QPointer>
 #include <QSet>
 #include <QShowEvent>
 #include <QStyle>
 #include <QStyledItemDelegate>
 #include <QTimer>
 #include <QToolTip>
 #include <QtDBus>
 
 #include <signal.h> //For SIGTERM
 
 #include <KAuth/Action>
 #include <KDialogJobUiDelegate>
 #include <KGlobalAccel>
 #include <KIO/ApplicationLauncherJob>
 #include <KService>
 #include <KWindowSystem>
 #include <KX11Extras>
 #include <klocalizedstring.h>
 #include <kmessagebox.h>
 
 #include "processdetails/ProcessDetailsDialog.h"
 #include "ReniceDlg.h"
 #include "process_attribute.h"
 #include "process_controller.h"
 #include "scripting.h"
 #include "ui_ProcessWidgetUI.h"
 
 #include <sys/types.h>
 #include <unistd.h>
 
 // Trolltech have a testing class for classes that inherit QAbstractItemModel.  If you want to run with this run-time testing enabled, put the modeltest.* files
 // in this directory and uncomment the next line #define DO_MODELCHECK
 #ifdef DO_MODELCHECK
 #include "modeltest.h"
 #endif
 class ProgressBarItemDelegate : public QStyledItemDelegate
 {
 public:
     ProgressBarItemDelegate(QObject *parent)
         : QStyledItemDelegate(parent)
     {
     }
 
     void paint(QPainter *painter, const QStyleOptionViewItem &opt, const QModelIndex &index) const override
     {
         QStyleOptionViewItem option = opt;
         initStyleOption(&option, index);
 
         float percentage = index.data(ProcessModel::PercentageRole).toFloat();
         auto history = index.data(ProcessModel::PercentageHistoryRole).value<QVector<ProcessModel::PercentageHistoryEntry>>();
         if (percentage >= 0 || history.size() > 1)
             drawPercentageDisplay(painter, option, percentage, history);
         else
             QStyledItemDelegate::paint(painter, option, index);
     }
 
 private:
     inline void
     drawPercentageDisplay(QPainter *painter, QStyleOptionViewItem &option, float percentage, const QVector<ProcessModel::PercentageHistoryEntry> &history) const
     {
         QStyle *style = option.widget ? option.widget->style() : QApplication::style();
         const QRect &rect = option.rect;
 
         const int HIST_MS_PER_PX = 100; // 100 ms = 1 px -> 1 s = 10 px
         bool hasHistory = history.size() > 1;
         // Make sure that more than one entry is visible
         if (hasHistory) {
             int width = (history.crbegin()->timestamp - (history.crbegin() + 1)->timestamp) / HIST_MS_PER_PX;
             hasHistory = width < rect.width();
         }
 
         // draw the background
         style->drawPrimitive(QStyle::PE_PanelItemViewItem, &option, painter, option.widget);
 
         QPalette::ColorGroup cg = option.state & QStyle::State_Enabled ? QPalette::Normal : QPalette::Disabled;
         if (cg == QPalette::Normal && !(option.state & QStyle::State_Active))
             cg = QPalette::Inactive;
 
         // Now draw our percentage thingy
         int size = qMin(int(percentage * rect.height()), rect.height());
         if (size > 2) { // make sure the line will have a width of more than 1 pixel
             painter->setPen(Qt::NoPen);
             QColor color = option.palette.color(cg, QPalette::Link);
             color.setAlpha(33);
 
             painter->fillRect(rect.x(), rect.y() + rect.height() - size, rect.width(), size, color);
         }
 
         // Draw the history graph
         if (hasHistory) {
             QColor color = option.palette.color(cg, QPalette::Link);
             color.setAlpha(66);
             painter->setPen(Qt::NoPen);
 
             QPainterPath path;
             // From right to left
             path.moveTo(rect.right(), rect.bottom());
 
             int xNow = rect.right();
             auto now = history.constLast();
             int height = qMin(int(rect.height() * now.value), rect.height());
             path.lineTo(xNow, rect.bottom() - height);
 
             for (int index = history.size() - 2; index >= 0 && xNow > rect.left(); --index) {
                 auto next = history.at(index);
                 int width = (now.timestamp - next.timestamp) / HIST_MS_PER_PX;
                 int xNext = qMax(xNow - width, rect.left());
 
                 now = next;
                 xNow = xNext;
                 int height = qMin(int(rect.height() * now.value), rect.height());
 
                 path.lineTo(xNow, rect.bottom() - height);
             }
 
             path.lineTo(xNow, rect.bottom());
             path.lineTo(rect.right(), rect.bottom());
 
             painter->fillPath(path, color);
         }
 
         // draw the text
         if (!option.text.isEmpty()) {
             QRect textRect = style->subElementRect(QStyle::SE_ItemViewItemText, &option, option.widget);
 
             if (option.state & QStyle::State_Selected) {
                 painter->setPen(option.palette.color(cg, QPalette::HighlightedText));
             } else {
                 painter->setPen(option.palette.color(cg, QPalette::Text));
             }
 
             painter->setFont(option.font);
             QTextOption textOption;
             textOption.setWrapMode(QTextOption::ManualWrap);
             textOption.setTextDirection(option.direction);
             textOption.setAlignment(QStyle::visualAlignment(option.direction, option.displayAlignment));
 
             painter->drawText(textRect, option.text, textOption);
         }
 
         // draw the focus rect
         if (option.state & QStyle::State_HasFocus) {
             QStyleOptionFocusRect o;
             o.QStyleOption::operator=(option);
             o.rect = style->subElementRect(QStyle::SE_ItemViewItemFocusRect, &option, option.widget);
             o.state |= QStyle::State_KeyboardFocusChange;
             o.state |= QStyle::State_Item;
             QPalette::ColorGroup cg = (option.state & QStyle::State_Enabled) ? QPalette::Normal : QPalette::Disabled;
             o.backgroundColor = option.palette.color(cg, (option.state & QStyle::State_Selected) ? QPalette::Highlight : QPalette::Window);
             style->drawPrimitive(QStyle::PE_FrameFocusRect, &o, painter, option.widget);
         }
     }
 };
 
 struct KSysGuardProcessListPrivate {
     KSysGuardProcessListPrivate(KSysGuardProcessList *q, const QString &hostName)
         : mModel(q, hostName)
         , mFilterModel(q)
         , mUi(new Ui::ProcessWidget())
         , mProcessContextMenu(nullptr)
         , mUpdateTimer(nullptr)
         , mToolsMenu(new QMenu(q))
     {
         mScripting = nullptr;
         mNeedToExpandInit = false;
         mNumItemsSelected = -1;
         mResortCountDown =
             2; // The items added initially will be already sorted, but without CPU info.  On the second refresh we will have CPU usage, so /then/ we can resort
         renice = new QAction(i18np("Set Priority...", "Set Priority...", 1), q);
         renice->setShortcut(Qt::Key_F8);
         selectParent = new QAction(i18n("Jump to Parent Process"), q);
 
         selectTracer = new QAction(i18n("Jump to Process Debugging This One"), q);
         window = new QAction(i18n("Show Application Window"), q);
         processDetails = new QAction(i18nc("@action:inmenu", "Detailed Information..."), q);
         resume = new QAction(QIcon::fromTheme(QStringLiteral("media-playback-start")), i18n("Resume Stopped Process"), q);
         terminate = new QAction(i18np("End Process", "End Processes", 1), q);
         terminate->setIcon(QIcon::fromTheme(QStringLiteral("process-stop")));
         terminate->setShortcut(Qt::Key_Delete);
         kill = new QAction(i18np("Forcibly Kill Process", "Forcibly Kill Processes", 1), q);
         kill->setIcon(QIcon::fromTheme(QStringLiteral("process-stop")));
         kill->setShortcut(Qt::SHIFT | Qt::Key_Delete);
 
         sigStop = new QAction(i18n("Suspend (STOP)"), q);
         sigCont = new QAction(i18n("Continue (CONT)"), q);
         sigHup = new QAction(i18n("Hangup (HUP)"), q);
         sigInt = new QAction(i18n("Interrupt (INT)"), q);
         sigTerm = new QAction(i18n("Terminate (TERM)"), q);
         sigKill = new QAction(i18n("Kill (KILL)"), q);
         sigUsr1 = new QAction(i18n("User 1 (USR1)"), q);
         sigUsr2 = new QAction(i18n("User 2 (USR2)"), q);
 
         // Set up '/' as a shortcut to jump to the quick search text widget
         jumpToSearchFilter = new QAction(i18n("Focus on Quick Search"), q);
         jumpToSearchFilter->setShortcuts(QList<QKeySequence>() << QKeySequence::Find << '/');
     }
 
     ~KSysGuardProcessListPrivate()
     {
         delete mUi;
         mUi = nullptr;
     }
 
     /** The number rows and their children for the given parent in the mFilterModel model */
     int totalRowCount(const QModelIndex &parent) const;
 
     /** Helper function to setup 'action' with the given pids */
     void setupKAuthAction(KAuth::Action &action, const QList<long long> &pids) const;
 
     /** fire a timer event if we are set to use our internal timer*/
     void fireTimerEvent();
 
     /** The process model.  This contains all the data on all the processes running on the system */
     ProcessModel mModel;
 
     /** The process filter.  The mModel is connected to this, and this filter model connects to the view.  This lets us
      *  sort the view and filter (by using the combo box or the search line)
      */
     ProcessFilter mFilterModel;
 
     KSysGuard::ProcessController *mProcessController = nullptr;
 
     /** The graphical user interface for this process list widget, auto-generated by Qt Designer */
     Ui::ProcessWidget *mUi;
 
     /** The context menu when you right click on a process */
     QMenu *mProcessContextMenu;
 
     /** A timer to call updateList() every mUpdateIntervalMSecs.
      *  NULL is mUpdateIntervalMSecs is <= 0. */
     QTimer *mUpdateTimer;
 
     /** The time to wait, in milliseconds, between updating the process list */
     int mUpdateIntervalMSecs;
 
     /** Number of items that are selected */
     int mNumItemsSelected;
 
     /** Class to deal with the scripting. NULL if scripting is disabled */
     Scripting *mScripting;
 
     /** A counter to mark when to resort, so that we do not resort on every update */
     int mResortCountDown;
 
     bool mNeedToExpandInit;
 
     QAction *renice;
     QAction *terminate;
     QAction *kill;
     QAction *selectParent;
     QAction *selectTracer;
     QAction *jumpToSearchFilter;
     QAction *window;
     QAction *processDetails;
     QAction *resume;
     QAction *sigStop;
     QAction *sigCont;
     QAction *sigHup;
     QAction *sigInt;
     QAction *sigTerm;
     QAction *sigKill;
     QAction *sigUsr1;
     QAction *sigUsr2;
 
     QMenu *mToolsMenu;
 
     QPointer<ProcessDetailsDialog> processDetailsDialog;
 };
 
 KSysGuardProcessList::KSysGuardProcessList(QWidget *parent, const QString &hostName)
     : QWidget(parent)
     , d(new KSysGuardProcessListPrivate(this, hostName))
 {
     qRegisterMetaType<QList<long long>>();
     qDBusRegisterMetaType<QList<long long>>();
 
     d->mProcessController = new KSysGuard::ProcessController(this);
     d->mProcessController->setWidget(window());
 
     d->mUpdateIntervalMSecs = 0; // Set process to not update manually by default
     d->mUi->setupUi(this);
     d->mFilterModel.setSourceModel(&d->mModel);
     d->mUi->treeView->setModel(&d->mFilterModel);
 #ifdef DO_MODELCHECK
     new ModelTest(&d->mModel, this);
 #endif
     d->mUi->treeView->setItemDelegate(new ProgressBarItemDelegate(d->mUi->treeView));
 
     d->mUi->treeView->header()->setContextMenuPolicy(Qt::CustomContextMenu);
     connect(d->mUi->treeView->header(), &QWidget::customContextMenuRequested, this, &KSysGuardProcessList::showColumnContextMenu);
 
     d->mProcessContextMenu = new QMenu(d->mUi->treeView);
     d->mUi->treeView->setContextMenuPolicy(Qt::CustomContextMenu);
     connect(d->mUi->treeView, SIGNAL(customContextMenuRequested(QPoint)), this, SLOT(showProcessContextMenu(QPoint)));
 
     d->mUi->treeView->header()->setSectionsClickable(true);
     d->mUi->treeView->header()->setSortIndicatorShown(true);
     d->mUi->treeView->header()->setCascadingSectionResizes(false);
     connect(d->mUi->btnKillProcess, &QAbstractButton::clicked, this, &KSysGuardProcessList::killSelectedProcesses);
     connect(d->mUi->txtFilter, &QLineEdit::textChanged, this, &KSysGuardProcessList::filterTextChanged);
     connect(d->mUi->cmbFilter, SIGNAL(currentIndexChanged(int)), this, SLOT(setStateInt(int)));
     connect(d->mUi->treeView, &QTreeView::expanded, this, &KSysGuardProcessList::expandAllChildren);
     connect(d->mUi->treeView->selectionModel(), &QItemSelectionModel::selectionChanged, this, &KSysGuardProcessList::selectionChanged);
     connect(&d->mFilterModel, &QAbstractItemModel::rowsInserted, this, &KSysGuardProcessList::rowsInserted);
     connect(&d->mFilterModel, &QAbstractItemModel::rowsRemoved, this, &KSysGuardProcessList::processListChanged);
     setMinimumSize(sizeHint());
 
     d->mFilterModel.setFilterKeyColumn(-1);
 
     /*  Hide various columns by default, to reduce information overload */
     d->mUi->treeView->header()->hideSection(ProcessModel::HeadingVmSize);
     d->mUi->treeView->header()->hideSection(ProcessModel::HeadingNiceness);
     d->mUi->treeView->header()->hideSection(ProcessModel::HeadingTty);
     d->mUi->treeView->header()->hideSection(ProcessModel::HeadingStartTime);
     d->mUi->treeView->header()->hideSection(ProcessModel::HeadingNoNewPrivileges);
     d->mUi->treeView->header()->hideSection(ProcessModel::HeadingCommand);
     d->mUi->treeView->header()->hideSection(ProcessModel::HeadingPid);
     d->mUi->treeView->header()->hideSection(ProcessModel::HeadingCPUTime);
     d->mUi->treeView->header()->hideSection(ProcessModel::HeadingIoRead);
     d->mUi->treeView->header()->hideSection(ProcessModel::HeadingIoWrite);
     d->mUi->treeView->header()->hideSection(ProcessModel::HeadingXMemory);
     d->mUi->treeView->header()->hideSection(ProcessModel::HeadingCGroup);
     d->mUi->treeView->header()->hideSection(ProcessModel::HeadingMACContext);
     d->mUi->treeView->header()->hideSection(ProcessModel::HeadingVmPSS);
     // NOTE!  After this is all setup, the settings for the header are restored
     // from the user's last run.  (in restoreHeaderState)
     // So making changes here only affects the default settings.  To
     // test changes temporarily, comment out the lines in restoreHeaderState.
     // When you are happy with the changes and want to commit, increase the
     // value of PROCESSHEADERVERSION.  This will force the header state
     // to be reset back to the defaults for all users.
     d->mUi->treeView->header()->resizeSection(ProcessModel::HeadingCPUUsage, d->mUi->treeView->header()->sectionSizeHint(ProcessModel::HeadingCPUUsage));
     d->mUi->treeView->header()->resizeSection(ProcessModel::HeadingMemory, d->mUi->treeView->header()->sectionSizeHint(ProcessModel::HeadingMemory));
     d->mUi->treeView->header()->resizeSection(ProcessModel::HeadingSharedMemory,
                                               d->mUi->treeView->header()->sectionSizeHint(ProcessModel::HeadingSharedMemory));
     d->mUi->treeView->header()->setSectionResizeMode(0, QHeaderView::Interactive);
     d->mUi->treeView->header()->setStretchLastSection(true);
 
     // Process names can have mixed case. Make the filter case insensitive.
     d->mFilterModel.setFilterCaseSensitivity(Qt::CaseInsensitive);
     d->mFilterModel.setSortCaseSensitivity(Qt::CaseInsensitive);
 
     d->mUi->txtFilter->installEventFilter(this);
     d->mUi->treeView->installEventFilter(this);
 
     d->mUi->treeView->setDragEnabled(true);
     d->mUi->treeView->setDragDropMode(QAbstractItemView::DragOnly);
 
     auto extraAttributes = d->mModel.extraAttributes();
     for (int i = 0; i < extraAttributes.count(); ++i) {
         auto attribute = extraAttributes.at(i);
         if (!attribute->isVisibleByDefault()) {
             d->mUi->treeView->header()->hideSection(ProcessModel::HeadingPluginStart + i);
         }
     }
 
     // Sort by username by default
     d->mUi->treeView->sortByColumn(ProcessModel::HeadingUser, Qt::AscendingOrder);
 
     // Add all the actions to the main widget, and get all the actions to call actionTriggered when clicked
     QList<QAction *> actions;
     actions << d->renice << d->kill << d->terminate << d->selectParent << d->selectTracer << d->window;
     actions << d->processDetails << d->jumpToSearchFilter << d->resume << d->sigStop << d->sigCont;
     actions << d->sigHup << d->sigInt << d->sigTerm << d->sigKill << d->sigUsr1 << d->sigUsr2;
 
     foreach (QAction *action, actions) {
         addAction(action);
         connect(action, &QAction::triggered, this, [this, action]() {
             actionTriggered(action);
         });
     }
 
     retranslateUi();
 
     d->mUi->btnKillProcess->setIcon(QIcon::fromTheme(QStringLiteral("process-stop")));
     d->mUi->btnKillProcess->setToolTip(
         i18n("<qt>End the selected process. Warning - you may lose unsaved work.<br>Right click on a process to send other signals.<br>See What's This for "
              "technical information."));
 
     auto addByDesktopName = [this](const QString &desktopName) {
         auto kService = KService::serviceByDesktopName(desktopName);
         if (kService) {
             auto action = new QAction(QIcon::fromTheme(kService->icon()), kService->name(), this);
 
             connect(action, &QAction::triggered, this, [this, kService](bool) {
                 auto *job = new KIO::ApplicationLauncherJob(kService);
                 job->setUiDelegate(new KDialogJobUiDelegate(KJobUiDelegate::AutoHandlingEnabled, window()));
                 job->start();
             });
             d->mToolsMenu->addAction(action);
         }
     };
 
     addByDesktopName(QStringLiteral("org.kde.konsole"));
 
     const QString ksysguardDesktopName = QStringLiteral("org.kde.ksysguard");
     // The following expression is true when the libksysguard process list is _not_ embedded in KSysGuard.
     // Only then we add KSysGuard to the menu
     if (qApp->desktopFileName() != ksysguardDesktopName) {
         addByDesktopName(ksysguardDesktopName);
     }
 
     addByDesktopName(QStringLiteral("org.kde.plasma-systemmonitor"));
     addByDesktopName(QStringLiteral("org.kde.ksystemlog"));
     addByDesktopName(QStringLiteral("org.kde.kinfocenter"));
     addByDesktopName(QStringLiteral("org.kde.filelight"));
     addByDesktopName(QStringLiteral("org.kde.sweeper"));
     addByDesktopName(QStringLiteral("org.kde.kmag"));
     addByDesktopName(QStringLiteral("htop"));
 
     // Add the xkill functionality...
     auto killWindowAction = new QAction(QIcon::fromTheme(QStringLiteral("document-close")), i18nc("@action:inmenu", "Kill a Window"), this);
     // Find shortcut of xkill functionality which is defined in KWin
     const auto killWindowShortcutList = KGlobalAccel::self()->globalShortcut(QStringLiteral("kwin"), QStringLiteral("Kill Window"));
     killWindowAction->setShortcuts(killWindowShortcutList);
     // We don't use xkill directly but the method in KWin which allows to press Esc to abort.
     auto killWindowKwinMethod = new QDBusInterface(QStringLiteral("org.kde.KWin"), QStringLiteral("/KWin"), QStringLiteral("org.kde.KWin"));
     // If KWin is not the window manager, then we disable the entry:
     if (!killWindowKwinMethod->isValid()) {
         killWindowAction->setEnabled(false);
     }
     connect(killWindowAction, &QAction::triggered, this, [this, killWindowKwinMethod](bool) {
         // with DBus call, always use the async method.
         // Otherwise it could wait up to 30 seconds in certain situations.
         killWindowKwinMethod->asyncCall(QStringLiteral("killWindow"));
     });
     d->mToolsMenu->addAction(killWindowAction);
 
     d->mUi->btnTools->setMenu(d->mToolsMenu);
 }
 
 KSysGuardProcessList::~KSysGuardProcessList()
 {
     delete d;
 }
 
 QTreeView *KSysGuardProcessList::treeView() const
 {
     return d->mUi->treeView;
 }
 
 QLineEdit *KSysGuardProcessList::filterLineEdit() const
 {
     return d->mUi->txtFilter;
 }
 
 ProcessFilter::State KSysGuardProcessList::state() const
 {
     return d->mFilterModel.filter();
 }
 void KSysGuardProcessList::setStateInt(int state)
 {
     setState((ProcessFilter::State)state);
     d->mUi->treeView->scrollTo(d->mUi->treeView->currentIndex());
 }
 void KSysGuardProcessList::setState(ProcessFilter::State state)
 { // index is the item the user selected in the combo box
     d->mFilterModel.setFilter(state);
     d->mModel.setSimpleMode((state != ProcessFilter::AllProcessesInTreeForm));
     d->mUi->cmbFilter->setCurrentIndex((int)state);
     if (isVisible())
         expandInit();
 }
 void KSysGuardProcessList::filterTextChanged(const QString &newText)
 {
     d->mFilterModel.setFilterRegularExpression(newText.trimmed());
     if (isVisible())
         expandInit();
     d->mUi->btnKillProcess->setEnabled(d->mUi->treeView->selectionModel()->hasSelection());
     d->mUi->treeView->scrollTo(d->mUi->treeView->currentIndex());
 }
 
 int KSysGuardProcessList::visibleProcessesCount() const
 {
     // This assumes that all the visible rows are processes.  This is true currently, but might not be
     // true if we add support for showing threads etc
     if (d->mModel.isSimpleMode())
         return d->mFilterModel.rowCount();
     return d->totalRowCount(QModelIndex());
 }
 
 int KSysGuardProcessListPrivate::totalRowCount(const QModelIndex &parent) const
 {
     int numRows = mFilterModel.rowCount(parent);
     int total = numRows;
     for (int i = 0; i < numRows; ++i) {
         QModelIndex index = mFilterModel.index(i, 0, parent);
         // if it has children add the total
         if (mFilterModel.hasChildren(index))
             total += totalRowCount(index);
     }
     return total;
 }
 
 void KSysGuardProcessListPrivate::setupKAuthAction(KAuth::Action &action, const QList<long long> &pids) const
 {
     action.setHelperId(QStringLiteral("org.kde.ksysguard.processlisthelper"));
 
     const int processCount = pids.count();
     for (int i = 0; i < processCount; i++) {
         action.addArgument(QStringLiteral("pid%1").arg(i), pids[i]);
     }
     action.addArgument(QStringLiteral("pidcount"), processCount);
 }
 void KSysGuardProcessList::selectionChanged()
 {
     int numSelected = d->mUi->treeView->selectionModel()->selectedRows().size();
     if (numSelected == d->mNumItemsSelected)
         return;
     d->mNumItemsSelected = numSelected;
     d->mUi->btnKillProcess->setEnabled(numSelected != 0);
 
     d->renice->setText(i18np("Set Priority...", "Set Priority...", numSelected));
     d->kill->setText(i18np("Forcibly Kill Process", "Forcibly Kill Processes", numSelected));
     d->terminate->setText(i18ncp("Context menu", "End Process", "End Processes", numSelected));
 }
 void KSysGuardProcessList::showProcessContextMenu(const QModelIndex &index)
 {
     if (!index.isValid())
         return;
     QRect rect = d->mUi->treeView->visualRect(index);
     QPoint point(rect.x() + rect.width() / 4, rect.y() + rect.height() / 2);
     showProcessContextMenu(point);
 }
 void KSysGuardProcessList::showProcessContextMenu(const QPoint &point)
 {
     d->mProcessContextMenu->clear();
 
     const QModelIndexList selectedIndexes = d->mUi->treeView->selectionModel()->selectedRows();
     const int numProcesses = selectedIndexes.size();
 
     if (numProcesses == 0) {
         // No processes selected, so no process context menu
 
         // Check just incase we have no columns visible.  In which case show the column context menu
         // so that users can unhide columns if there are no columns visible
         for (int i = 0; i < d->mFilterModel.columnCount(); ++i) {
             if (!d->mUi->treeView->header()->isSectionHidden(i))
                 return;
         }
         showColumnContextMenu(point);
         return;
     }
 
     QModelIndex realIndex = d->mFilterModel.mapToSource(selectedIndexes.at(0));
     KSysGuard::Process *process = reinterpret_cast<KSysGuard::Process *>(realIndex.internalPointer());
 
     d->mProcessContextMenu->addAction(d->renice);
     QMenu *signalMenu = d->mProcessContextMenu->addMenu(i18n("Send Signal"));
     signalMenu->addAction(d->sigStop);
     signalMenu->addAction(d->sigCont);
     signalMenu->addAction(d->sigHup);
     signalMenu->addAction(d->sigInt);
     signalMenu->addAction(d->sigTerm);
     signalMenu->addAction(d->sigKill);
     signalMenu->addAction(d->sigUsr1);
     signalMenu->addAction(d->sigUsr2);
 
     if (numProcesses == 1 && process->parentPid() > 1) {
         // As a design decision, I do not show the 'Jump to parent process' option when the
         // parent is just 'init'.
 
         KSysGuard::Process *parent_process = d->mModel.getProcess(process->parentPid());
         if (parent_process) { // it should not be possible for this process to not exist, but check just incase
             QString parent_name = parent_process->name();
             d->selectParent->setText(i18n("Jump to Parent Process (%1)", parent_name));
             d->mProcessContextMenu->addAction(d->selectParent);
         }
     }
 
     if (numProcesses == 1 && process->tracerpid() >= 0) {
         // If the process is being debugged, offer to select it
         d->mProcessContextMenu->addAction(d->selectTracer);
     }
 
     if (numProcesses == 1 && !d->mModel.data(realIndex, ProcessModel::WindowIdRole).isNull()) {
         d->mProcessContextMenu->addAction(d->window);
     }
 
     if (numProcesses == 1) {
         const QFileInfo procDirFileInfo(QStringLiteral("/proc/%1").arg(process->pid()));
         if (procDirFileInfo.exists() && procDirFileInfo.isReadable() && procDirFileInfo.isDir()) {
             d->mProcessContextMenu->addAction(d->processDetails);
         }
     }
 
     if (numProcesses == 1 && process->status() == KSysGuard::Process::Stopped) {
         // If the process is stopped, offer to resume it
         d->mProcessContextMenu->addAction(d->resume);
     }
 
     if (numProcesses == 1 && d->mScripting) {
         foreach (QAction *action, d->mScripting->actions()) {
             d->mProcessContextMenu->addAction(action);
         }
     }
     d->mProcessContextMenu->addSeparator();
     d->mProcessContextMenu->addAction(d->terminate);
     if (numProcesses == 1 && process->timeKillWasSent().isValid())
         d->mProcessContextMenu->addAction(d->kill);
 
     d->mProcessContextMenu->popup(d->mUi->treeView->viewport()->mapToGlobal(point));
 }
 void KSysGuardProcessList::actionTriggered(QObject *object)
 {
     if (!isVisible()) // Ignore triggered actions if we are not visible!
         return;
     // Reset the text back to normal
     d->selectParent->setText(i18n("Jump to Parent Process"));
     QAction *result = qobject_cast<QAction *>(object);
     if (result == nullptr) {
         // Escape was pressed. Do nothing.
     } else if (result == d->renice) {
         reniceSelectedProcesses();
     } else if (result == d->terminate) {
         sendSignalToSelectedProcesses(SIGTERM, true);
     } else if (result == d->kill) {
         sendSignalToSelectedProcesses(SIGKILL, true);
     } else if (result == d->selectParent) {
         QModelIndexList selectedIndexes = d->mUi->treeView->selectionModel()->selectedRows();
         int numProcesses = selectedIndexes.size();
         if (numProcesses == 0)
             return; // No processes selected
         QModelIndex realIndex = d->mFilterModel.mapToSource(selectedIndexes.at(0));
         KSysGuard::Process *process = reinterpret_cast<KSysGuard::Process *>(realIndex.internalPointer());
         if (process)
             selectAndJumpToProcess(process->parentPid());
     } else if (result == d->selectTracer) {
         QModelIndexList selectedIndexes = d->mUi->treeView->selectionModel()->selectedRows();
         int numProcesses = selectedIndexes.size();
         if (numProcesses == 0)
             return; // No processes selected
         QModelIndex realIndex = d->mFilterModel.mapToSource(selectedIndexes.at(0));
         KSysGuard::Process *process = reinterpret_cast<KSysGuard::Process *>(realIndex.internalPointer());
         if (process)
             selectAndJumpToProcess(process->tracerpid());
     } else if (result == d->window) {
         QModelIndexList selectedIndexes = d->mUi->treeView->selectionModel()->selectedRows();
         int numProcesses = selectedIndexes.size();
         if (numProcesses == 0)
             return; // No processes selected
         foreach (const QModelIndex &index, selectedIndexes) {
             QModelIndex realIndex = d->mFilterModel.mapToSource(index);
             QVariant widVar = d->mModel.data(realIndex, ProcessModel::WindowIdRole);
             if (!widVar.isNull()) {
                 int wid = widVar.toInt();
                 KX11Extras::activateWindow(wid);
             }
         }
     } else if (result == d->processDetails) {
         const QModelIndexList selectedIndexes = d->mUi->treeView->selectionModel()->selectedRows();
         if (selectedIndexes.size() != 1) {
             return;
         }
         const QModelIndex mappedIndex = d->mFilterModel.mapToSource(selectedIndexes.first());
         Q_ASSERT(mappedIndex.isValid());
         if (!d->processDetailsDialog) {
             d->processDetailsDialog = new ProcessDetailsDialog(this);
         }
         d->processDetailsDialog->setModelIndex(mappedIndex);
         d->processDetailsDialog->show();
         d->processDetailsDialog->raise();
     } else if (result == d->jumpToSearchFilter) {
         d->mUi->txtFilter->setFocus();
     } else {
         int sig;
         if (result == d->resume || result == d->sigCont)
             sig = SIGCONT; // Despite the function name, this sends a signal, rather than kill it.  Silly unix :)
         else if (result == d->sigStop)
             sig = SIGSTOP;
         else if (result == d->sigHup)
             sig = SIGHUP;
         else if (result == d->sigInt)
             sig = SIGINT;
         else if (result == d->sigTerm)
             sig = SIGTERM;
         else if (result == d->sigKill)
             sig = SIGKILL;
         else if (result == d->sigUsr1)
             sig = SIGUSR1;
         else if (result == d->sigUsr2)
             sig = SIGUSR2;
         else
             return;
         sendSignalToSelectedProcesses(sig, false);
     }
 }
 
 void KSysGuardProcessList::selectAndJumpToProcess(int pid)
 {
     KSysGuard::Process *process = d->mModel.getProcess(pid);
     if (!process)
         return;
     QModelIndex sourceIndex = d->mModel.getQModelIndex(process, 0);
     QModelIndex filterIndex = d->mFilterModel.mapFromSource(sourceIndex);
     if (!filterIndex.isValid() && !d->mUi->txtFilter->text().isEmpty()) {
         // The filter is preventing us from finding the parent.  Clear the filter
         //(It could also be the combo box - should we deal with that case as well?)
         d->mUi->txtFilter->clear();
         filterIndex = d->mFilterModel.mapFromSource(sourceIndex);
     }
     d->mUi->treeView->clearSelection();
     d->mUi->treeView->setCurrentIndex(filterIndex);
     d->mUi->treeView->scrollTo(filterIndex, QAbstractItemView::PositionAtCenter);
 }
 
 void KSysGuardProcessList::showColumnContextMenu(const QPoint &point)
 {
     QMenu menu;
 
     QAction *action;
 
     int num_headings = d->mFilterModel.columnCount();
 
     int index = d->mUi->treeView->header()->logicalIndexAt(point);
     if (index >= 0) {
         bool anyOtherVisibleColumns = false;
         for (int i = 0; i < num_headings; ++i) {
             if (i != index && !d->mUi->treeView->header()->isSectionHidden(i)) {
                 anyOtherVisibleColumns = true;
                 break;
             }
         }
         if (anyOtherVisibleColumns) {
             // selected a column.  Give the option to hide it
             action = new QAction(&menu);
             action->setData(-index - 1); // We set data to be negative (and minus 1) to hide a column, and positive to show a column
             action->setText(i18n("Hide Column '%1'", d->mFilterModel.headerData(index, Qt::Horizontal, Qt::DisplayRole).toString()));
             menu.addAction(action);
             if (d->mUi->treeView->header()->sectionsHidden()) {
                 menu.addSeparator();
             }
         }
     }
 
     if (d->mUi->treeView->header()->sectionsHidden()) {
         for (int i = 0; i < num_headings; ++i) {
             if (d->mUi->treeView->header()->isSectionHidden(i)) {
 #if !HAVE_XRES
                 if (i == ProcessModel::HeadingXMemory)
                     continue;
 #endif
                 action = new QAction(&menu);
                 action->setText(i18n("Show Column '%1'", d->mFilterModel.headerData(i, Qt::Horizontal, Qt::DisplayRole).toString()));
                 action->setData(i); // We set data to be negative (and minus 1) to hide a column, and positive to show a column
                 menu.addAction(action);
             }
         }
     }
     QAction *actionAuto = nullptr;
     QAction *actionKB = nullptr;
     QAction *actionMB = nullptr;
     QAction *actionGB = nullptr;
     QAction *actionPercentage = nullptr;
     QAction *actionShowCmdlineOptions = nullptr;
     QAction *actionShowTooltips = nullptr;
     QAction *actionNormalizeCPUUsage = nullptr;
 
     QAction *actionIoCharacters = nullptr;
     QAction *actionIoSyscalls = nullptr;
     QAction *actionIoActualCharacters = nullptr;
     QAction *actionIoShowRate = nullptr;
     bool showIoRate = false;
     if (index == ProcessModel::HeadingIoRead || index == ProcessModel::HeadingIoWrite)
         showIoRate = d->mModel.ioInformation() == ProcessModel::BytesRate || d->mModel.ioInformation() == ProcessModel::SyscallsRate
             || d->mModel.ioInformation() == ProcessModel::ActualBytesRate;
 
     if (index == ProcessModel::HeadingVmSize || index == ProcessModel::HeadingMemory || index == ProcessModel::HeadingXMemory
         || index == ProcessModel::HeadingSharedMemory || index == ProcessModel::HeadingVmPSS
         || ((index == ProcessModel::HeadingIoRead || index == ProcessModel::HeadingIoWrite) && d->mModel.ioInformation() != ProcessModel::Syscalls)) {
         // If the user right clicks on a column that contains a memory size, show a toggle option for displaying
         // the memory in different units.  e.g.  "2000 k" or "2 m"
         menu.addSeparator()->setText(i18n("Display Units"));
         QActionGroup *unitsGroup = new QActionGroup(&menu);
         /* Automatic (human readable)*/
         actionAuto = new QAction(&menu);
         actionAuto->setText(i18n("Mixed"));
         actionAuto->setCheckable(true);
         menu.addAction(actionAuto);
         unitsGroup->addAction(actionAuto);
         /* Kilobytes */
         actionKB = new QAction(&menu);
         actionKB->setText((showIoRate) ? i18n("Kilobytes per second") : i18n("Kilobytes"));
         actionKB->setCheckable(true);
         menu.addAction(actionKB);
         unitsGroup->addAction(actionKB);
         /* Megabytes */
         actionMB = new QAction(&menu);
         actionMB->setText((showIoRate) ? i18n("Megabytes per second") : i18n("Megabytes"));
         actionMB->setCheckable(true);
         menu.addAction(actionMB);
         unitsGroup->addAction(actionMB);
         /* Gigabytes */
         actionGB = new QAction(&menu);
         actionGB->setText((showIoRate) ? i18n("Gigabytes per second") : i18n("Gigabytes"));
         actionGB->setCheckable(true);
         menu.addAction(actionGB);
         unitsGroup->addAction(actionGB);
         ProcessModel::Units currentUnit;
         if (index == ProcessModel::HeadingIoRead || index == ProcessModel::HeadingIoWrite) {
             currentUnit = d->mModel.ioUnits();
         } else {
             actionPercentage = new QAction(&menu);
             actionPercentage->setText(i18n("Percentage"));
             actionPercentage->setCheckable(true);
             menu.addAction(actionPercentage);
             unitsGroup->addAction(actionPercentage);
             currentUnit = d->mModel.units();
         }
         switch (currentUnit) {
         case ProcessModel::UnitsAuto:
             actionAuto->setChecked(true);
             break;
         case ProcessModel::UnitsKB:
             actionKB->setChecked(true);
             break;
         case ProcessModel::UnitsMB:
             actionMB->setChecked(true);
             break;
         case ProcessModel::UnitsGB:
             actionGB->setChecked(true);
             break;
         case ProcessModel::UnitsPercentage:
             actionPercentage->setChecked(true);
             break;
         default:
             break;
         }
         unitsGroup->setExclusive(true);
     } else if (index == ProcessModel::HeadingName) {
         menu.addSeparator();
         actionShowCmdlineOptions = new QAction(&menu);
         actionShowCmdlineOptions->setText(i18n("Display command line options"));
         actionShowCmdlineOptions->setCheckable(true);
         actionShowCmdlineOptions->setChecked(d->mModel.isShowCommandLineOptions());
         menu.addAction(actionShowCmdlineOptions);
     } else if (index == ProcessModel::HeadingCPUUsage) {
         menu.addSeparator();
         actionNormalizeCPUUsage = new QAction(&menu);
         actionNormalizeCPUUsage->setText(i18n("Divide CPU usage by number of CPUs"));
         actionNormalizeCPUUsage->setCheckable(true);
         actionNormalizeCPUUsage->setChecked(d->mModel.isNormalizedCPUUsage());
         menu.addAction(actionNormalizeCPUUsage);
     }
 
     if (index == ProcessModel::HeadingIoRead || index == ProcessModel::HeadingIoWrite) {
         menu.addSeparator()->setText(i18n("Displayed Information"));
         QActionGroup *ioInformationGroup = new QActionGroup(&menu);
         actionIoCharacters = new QAction(&menu);
         actionIoCharacters->setText(i18n("Characters read/written"));
         actionIoCharacters->setCheckable(true);
         menu.addAction(actionIoCharacters);
         ioInformationGroup->addAction(actionIoCharacters);
         actionIoSyscalls = new QAction(&menu);
         actionIoSyscalls->setText(i18n("Number of Read/Write operations"));
         actionIoSyscalls->setCheckable(true);
         menu.addAction(actionIoSyscalls);
         ioInformationGroup->addAction(actionIoSyscalls);
         actionIoActualCharacters = new QAction(&menu);
         actionIoActualCharacters->setText(i18n("Bytes actually read/written"));
         actionIoActualCharacters->setCheckable(true);
         menu.addAction(actionIoActualCharacters);
         ioInformationGroup->addAction(actionIoActualCharacters);
 
         actionIoShowRate = new QAction(&menu);
         actionIoShowRate->setText(i18n("Show I/O rate"));
         actionIoShowRate->setCheckable(true);
         actionIoShowRate->setChecked(showIoRate);
         menu.addAction(actionIoShowRate);
 
         switch (d->mModel.ioInformation()) {
         case ProcessModel::Bytes:
         case ProcessModel::BytesRate:
             actionIoCharacters->setChecked(true);
             break;
         case ProcessModel::Syscalls:
         case ProcessModel::SyscallsRate:
             actionIoSyscalls->setChecked(true);
             break;
         case ProcessModel::ActualBytes:
         case ProcessModel::ActualBytesRate:
             actionIoActualCharacters->setChecked(true);
             break;
         default:
             break;
         }
     }
 
     menu.addSeparator();
     actionShowTooltips = new QAction(&menu);
     actionShowTooltips->setCheckable(true);
     actionShowTooltips->setChecked(d->mModel.isShowingTooltips());
     actionShowTooltips->setText(i18n("Show Tooltips"));
     menu.addAction(actionShowTooltips);
 
     QAction *result = menu.exec(d->mUi->treeView->header()->mapToGlobal(point));
     if (!result)
         return; // Menu cancelled
     if (result == actionAuto) {
         if (index == ProcessModel::HeadingIoRead || index == ProcessModel::HeadingIoWrite)
             d->mModel.setIoUnits(ProcessModel::UnitsAuto);
         else
             d->mModel.setUnits(ProcessModel::UnitsAuto);
         return;
     } else if (result == actionKB) {
         if (index == ProcessModel::HeadingIoRead || index == ProcessModel::HeadingIoWrite)
             d->mModel.setIoUnits(ProcessModel::UnitsKB);
         else
             d->mModel.setUnits(ProcessModel::UnitsKB);
         return;
     } else if (result == actionMB) {
         if (index == ProcessModel::HeadingIoRead || index == ProcessModel::HeadingIoWrite)
             d->mModel.setIoUnits(ProcessModel::UnitsMB);
         else
             d->mModel.setUnits(ProcessModel::UnitsMB);
         return;
     } else if (result == actionGB) {
         if (index == ProcessModel::HeadingIoRead || index == ProcessModel::HeadingIoWrite)
             d->mModel.setIoUnits(ProcessModel::UnitsGB);
         else
             d->mModel.setUnits(ProcessModel::UnitsGB);
         return;
     } else if (result == actionPercentage) {
         d->mModel.setUnits(ProcessModel::UnitsPercentage);
         return;
     } else if (result == actionShowCmdlineOptions) {
         d->mModel.setShowCommandLineOptions(actionShowCmdlineOptions->isChecked());
         return;
     } else if (result == actionNormalizeCPUUsage) {
         d->mModel.setNormalizedCPUUsage(actionNormalizeCPUUsage->isChecked());
         return;
     } else if (result == actionShowTooltips) {
         d->mModel.setShowingTooltips(actionShowTooltips->isChecked());
         return;
     } else if (result == actionIoCharacters) {
         d->mModel.setIoInformation((showIoRate) ? ProcessModel::BytesRate : ProcessModel::Bytes);
         return;
     } else if (result == actionIoSyscalls) {
         d->mModel.setIoInformation((showIoRate) ? ProcessModel::SyscallsRate : ProcessModel::Syscalls);
         return;
     } else if (result == actionIoActualCharacters) {
         d->mModel.setIoInformation((showIoRate) ? ProcessModel::ActualBytesRate : ProcessModel::ActualBytes);
         return;
     } else if (result == actionIoShowRate) {
         showIoRate = actionIoShowRate->isChecked();
         switch (d->mModel.ioInformation()) {
         case ProcessModel::Bytes:
         case ProcessModel::BytesRate:
             d->mModel.setIoInformation((showIoRate) ? ProcessModel::BytesRate : ProcessModel::Bytes);
             break;
         case ProcessModel::Syscalls:
         case ProcessModel::SyscallsRate:
             d->mModel.setIoInformation((showIoRate) ? ProcessModel::SyscallsRate : ProcessModel::Syscalls);
             break;
         case ProcessModel::ActualBytes:
         case ProcessModel::ActualBytesRate:
             d->mModel.setIoInformation((showIoRate) ? ProcessModel::ActualBytesRate : ProcessModel::ActualBytes);
             break;
         default:
             break;
         }
     }
 
     int i = result->data().toInt();
     // We set data to be negative to hide a column, and positive to show a column
     if (i < 0) {
         auto index = -1 - i;
         d->mUi->treeView->hideColumn(index);
     } else {
         d->mUi->treeView->showColumn(i);
         updateList();
         d->mUi->treeView->resizeColumnToContents(i);
         d->mUi->treeView->resizeColumnToContents(d->mFilterModel.columnCount());
     }
     menu.deleteLater();
 }
 
 void KSysGuardProcessList::expandAllChildren(const QModelIndex &parent)
 {
     // This is called when the user expands a node.  This then expands all of its
     // children.  This will trigger this function again recursively.
     QModelIndex sourceParent = d->mFilterModel.mapToSource(parent);
     for (int i = 0; i < d->mModel.rowCount(sourceParent); i++) {
         d->mUi->treeView->expand(d->mFilterModel.mapFromSource(d->mModel.index(i, 0, sourceParent)));
     }
 }
 
 void KSysGuardProcessList::rowsInserted(const QModelIndex &parent, int start, int end)
 {
     if (d->mModel.isSimpleMode() || parent.isValid()) {
         Q_EMIT processListChanged();
         return; // No tree or not a root node - no need to expand init
     }
     disconnect(&d->mFilterModel, &QAbstractItemModel::rowsInserted, this, &KSysGuardProcessList::rowsInserted);
     // It is a root node that we just inserted - expand it
     bool expanded = false;
     for (int i = start; i <= end; i++) {
         QModelIndex index = d->mFilterModel.index(i, 0, QModelIndex());
         if (!d->mUi->treeView->isExpanded(index)) {
             if (!expanded) {
                 disconnect(d->mUi->treeView, &QTreeView::expanded, this, &KSysGuardProcessList::expandAllChildren);
                 expanded = true;
             }
             d->mUi->treeView->expand(index);
             d->mNeedToExpandInit = true;
         }
     }
     if (expanded)
         connect(d->mUi->treeView, &QTreeView::expanded, this, &KSysGuardProcessList::expandAllChildren);
     connect(&d->mFilterModel, &QAbstractItemModel::rowsInserted, this, &KSysGuardProcessList::rowsInserted);
     Q_EMIT processListChanged();
 }
 
 void KSysGuardProcessList::expandInit()
 {
     if (d->mModel.isSimpleMode())
         return; // No tree - no need to expand init
 
     bool expanded = false;
     for (int i = 0; i < d->mFilterModel.rowCount(QModelIndex()); i++) {
         QModelIndex index = d->mFilterModel.index(i, 0, QModelIndex());
         if (!d->mUi->treeView->isExpanded(index)) {
             if (!expanded) {
                 disconnect(d->mUi->treeView, &QTreeView::expanded, this, &KSysGuardProcessList::expandAllChildren);
                 expanded = true;
             }
 
             d->mUi->treeView->expand(index);
         }
     }
     if (expanded)
         connect(d->mUi->treeView, &QTreeView::expanded, this, &KSysGuardProcessList::expandAllChildren);
 }
 
 void KSysGuardProcessList::hideEvent(QHideEvent *event) // virtual protected from QWidget
 {
     // Stop updating the process list if we are hidden
     if (d->mUpdateTimer)
         d->mUpdateTimer->stop();
     // stop any scripts running, to save on memory
     if (d->mScripting)
         d->mScripting->stopAllScripts();
 
     QWidget::hideEvent(event);
 }
 
 void KSysGuardProcessList::showEvent(QShowEvent *event) // virtual protected from QWidget
 {
     // Start updating the process list again if we are shown again
     updateList();
     QHeaderView *header = d->mUi->treeView->header();
     d->mUi->treeView->sortByColumn(header->sortIndicatorSection(), header->sortIndicatorOrder());
 
     QWidget::showEvent(event);
 }
 
 void KSysGuardProcessList::changeEvent(QEvent *event)
 {
     if (event->type() == QEvent::LanguageChange) {
         d->mModel.retranslateUi();
         d->mUi->retranslateUi(this);
         retranslateUi();
     }
     QWidget::changeEvent(event);
 }
 void KSysGuardProcessList::retranslateUi()
 {
     d->mUi->cmbFilter->setItemIcon(ProcessFilter::AllProcesses, QIcon::fromTheme(QStringLiteral("view-process-all")));
     d->mUi->cmbFilter->setItemIcon(ProcessFilter::AllProcessesInTreeForm, QIcon::fromTheme(QStringLiteral("view-process-all-tree")));
     d->mUi->cmbFilter->setItemIcon(ProcessFilter::SystemProcesses, QIcon::fromTheme(QStringLiteral("view-process-system")));
     d->mUi->cmbFilter->setItemIcon(ProcessFilter::UserProcesses, QIcon::fromTheme(QStringLiteral("view-process-users")));
     d->mUi->cmbFilter->setItemIcon(ProcessFilter::OwnProcesses, QIcon::fromTheme(QStringLiteral("view-process-own")));
     d->mUi->cmbFilter->setItemIcon(ProcessFilter::ProgramsOnly, QIcon::fromTheme(QStringLiteral("view-process-all")));
 }
 
 void KSysGuardProcessList::updateList()
 {
     if (isVisible()) {
         KSysGuard::Processes::UpdateFlags updateFlags = KSysGuard::Processes::StandardInformation;
         if (!d->mUi->treeView->isColumnHidden(ProcessModel::HeadingIoRead) || !d->mUi->treeView->isColumnHidden(ProcessModel::HeadingIoWrite))
             updateFlags |= KSysGuard::Processes::IOStatistics;
         if (!d->mUi->treeView->isColumnHidden(ProcessModel::HeadingXMemory))
             updateFlags |= KSysGuard::Processes::XMemory;
         // Updating VmPSS every call results in ~4x CPU load on my machine, so do it less often
         if (!d->mUi->treeView->isColumnHidden(ProcessModel::HeadingVmPSS) && d->mResortCountDown <= 1)
             updateFlags |= KSysGuard::Processes::Smaps;
         d->mModel.update(d->mUpdateIntervalMSecs, updateFlags);
         if (d->mUpdateTimer)
             d->mUpdateTimer->start(d->mUpdateIntervalMSecs);
         Q_EMIT updated();
         if (QToolTip::isVisible() && qApp->topLevelAt(QCursor::pos()) == window()) {
             QWidget *w = d->mUi->treeView->viewport();
             if (w->geometry().contains(d->mUi->treeView->mapFromGlobal(QCursor::pos()))) {
                 QHelpEvent event(QEvent::ToolTip, w->mapFromGlobal(QCursor::pos()), QCursor::pos());
                 qApp->notify(w, &event);
             }
         }
         if (--d->mResortCountDown <= 0) {
             d->mResortCountDown = 2; // resort every second time
             // resort now
             QHeaderView *header = d->mUi->treeView->header();
             d->mUi->treeView->sortByColumn(header->sortIndicatorSection(), header->sortIndicatorOrder());
         }
         if (d->mNeedToExpandInit) {
             expandInit();
             d->mNeedToExpandInit = false;
         }
     }
 }
 
 int KSysGuardProcessList::updateIntervalMSecs() const
 {
     return d->mUpdateIntervalMSecs;
 }
 
 void KSysGuardProcessList::setUpdateIntervalMSecs(int intervalMSecs)
 {
     if (intervalMSecs == d->mUpdateIntervalMSecs)
         return;
 
     d->mUpdateIntervalMSecs = intervalMSecs;
     if (intervalMSecs <= 0) { // no point keep the timer around if we aren't updating automatically
         delete d->mUpdateTimer;
         d->mUpdateTimer = nullptr;
         return;
     }
 
     if (!d->mUpdateTimer) {
         // intervalMSecs is a valid time, so set up a timer
         d->mUpdateTimer = new QTimer(this);
         d->mUpdateTimer->setSingleShot(true);
         connect(d->mUpdateTimer, &QTimer::timeout, this, &KSysGuardProcessList::updateList);
         if (isVisible())
             d->mUpdateTimer->start(d->mUpdateIntervalMSecs);
     } else
         d->mUpdateTimer->setInterval(d->mUpdateIntervalMSecs);
 }
 
 bool KSysGuardProcessList::reniceProcesses(const QList<long long> &pids, int niceValue)
 {
     auto result = d->mProcessController->setPriority(pids, niceValue);
     if (result == KSysGuard::ProcessController::Result::Success) {
         updateList();
         return true;
     } else if (result == KSysGuard::ProcessController::Result::Error) {
         KMessageBox::error(this,
                            i18n("You do not have the permission to renice the process and there "
                                 "was a problem trying to run as root."));
     }
     return true;
 }
 
 QList<KSysGuard::Process *> KSysGuardProcessList::selectedProcesses() const
 {
     QList<KSysGuard::Process *> processes;
     QModelIndexList selectedIndexes = d->mUi->treeView->selectionModel()->selectedRows();
     for (int i = 0; i < selectedIndexes.size(); ++i) {
         KSysGuard::Process *process = reinterpret_cast<KSysGuard::Process *>(d->mFilterModel.mapToSource(selectedIndexes.at(i)).internalPointer());
         processes << process;
     }
     return processes;
 }
 
 void KSysGuardProcessList::reniceSelectedProcesses()
 {
     QList<long long> pids;
     QPointer<ReniceDlg> reniceDlg;
     {
         QList<KSysGuard::Process *> processes = selectedProcesses();
         QStringList selectedAsStrings;
 
         if (processes.isEmpty()) {
             KMessageBox::error(this, i18n("You must select a process first."));
             return;
         }
 
         int sched = -2;
         int iosched = -2;
         foreach (KSysGuard::Process *process, processes) {
             pids << process->pid();
             selectedAsStrings << d->mModel.getStringForProcess(process);
             if (sched == -2)
                 sched = (int)process->scheduler();
             else if (sched != -1 && sched != (int)process->scheduler())
                 sched = -1; // If two processes have different schedulers, disable the cpu scheduler stuff
             if (iosched == -2)
                 iosched = (int)process->ioPriorityClass();
             else if (iosched != -1 && iosched != (int)process->ioPriorityClass())
                 iosched = -1; // If two processes have different schedulers, disable the cpu scheduler stuff
         }
         int firstPriority = processes.first()->niceLevel();
         int firstIOPriority = processes.first()->ioniceLevel();
 
         bool supportsIoNice = d->mModel.processController()->supportsIoNiceness();
         if (!supportsIoNice) {
             iosched = -2;
             firstIOPriority = -2;
         }
         reniceDlg = new ReniceDlg(d->mUi->treeView, selectedAsStrings, firstPriority, sched, firstIOPriority, iosched);
         if (reniceDlg->exec() == QDialog::Rejected) {
             delete reniceDlg;
             return;
         }
     }
 
     // Because we've done into ReniceDlg, which calls processEvents etc, our processes list is no
     // longer valid
 
     QList<long long> renicePids;
     QList<long long> changeCPUSchedulerPids;
     QList<long long> changeIOSchedulerPids;
     foreach (long long pid, pids) {
         KSysGuard::Process *process = d->mModel.getProcess(pid);
         if (!process)
             continue;
 
         switch (reniceDlg->newCPUSched) {
         case -2:
         case -1: // Invalid, not changed etc.
             break; // So do nothing
         case KSysGuard::Process::Other:
         case KSysGuard::Process::Fifo: // Don't know if some other
                                        // system uses SCHED_FIFO
                                        // with niceness. Linux
                                        // doesn't
         case KSysGuard::Process::Batch:
             if (reniceDlg->newCPUSched != (int)process->scheduler()) {
                 changeCPUSchedulerPids << pid;
                 renicePids << pid;
             } else if (reniceDlg->newCPUPriority != process->niceLevel())
                 renicePids << pid;
             break;
 
         case KSysGuard::Process::RoundRobin:
             if (reniceDlg->newCPUSched != (int)process->scheduler() || reniceDlg->newCPUPriority != process->niceLevel()) {
                 changeCPUSchedulerPids << pid;
             }
             break;
         }
         switch (reniceDlg->newIOSched) {
         case -2:
         case -1: // Invalid, not changed etc.
             break; // So do nothing
         case KSysGuard::Process::None:
             if (reniceDlg->newIOSched != (int)process->ioPriorityClass()) {
                 // Unfortunately linux doesn't actually let us set the ioniceness back to none after being set to something else
                 if (process->ioPriorityClass() != KSysGuard::Process::BestEffort || reniceDlg->newIOPriority != process->ioniceLevel())
                     changeIOSchedulerPids << pid;
             }
             break;
         case KSysGuard::Process::Idle:
             if (reniceDlg->newIOSched != (int)process->ioPriorityClass()) {
                 changeIOSchedulerPids << pid;
             }
             break;
         case KSysGuard::Process::BestEffort:
             if (process->ioPriorityClass() == KSysGuard::Process::None && reniceDlg->newIOPriority == (process->niceLevel() + 20) / 5)
                 break; // Don't set to BestEffort if it's on None and the nicelevel wouldn't change
         case KSysGuard::Process::RealTime:
             if (reniceDlg->newIOSched != (int)process->ioPriorityClass() || reniceDlg->newIOPriority != process->ioniceLevel()) {
                 changeIOSchedulerPids << pid;
             }
             break;
         }
     }
     if (!changeCPUSchedulerPids.isEmpty()) {
         Q_ASSERT(reniceDlg->newCPUSched >= 0);
         if (!changeCpuScheduler(changeCPUSchedulerPids, (KSysGuard::Process::Scheduler)reniceDlg->newCPUSched, reniceDlg->newCPUPriority)) {
             delete reniceDlg;
             return;
         }
     }
     if (!renicePids.isEmpty()) {
         Q_ASSERT(reniceDlg->newCPUPriority <= 20 && reniceDlg->newCPUPriority >= -20);
         if (!reniceProcesses(renicePids, reniceDlg->newCPUPriority)) {
             delete reniceDlg;
             return;
         }
     }
     if (!changeIOSchedulerPids.isEmpty()) {
         if (!changeIoScheduler(changeIOSchedulerPids, (KSysGuard::Process::IoPriorityClass)reniceDlg->newIOSched, reniceDlg->newIOPriority)) {
             delete reniceDlg;
             return;
         }
     }
     delete reniceDlg;
     updateList();
 }
 
 bool KSysGuardProcessList::changeIoScheduler(const QList<long long> &pids, KSysGuard::Process::IoPriorityClass newIoSched, int newIoSchedPriority)
 {
     auto result = d->mProcessController->setIOScheduler(pids, newIoSched, newIoSchedPriority);
     if (result == KSysGuard::ProcessController::Result::Success) {
         updateList();
         return true;
     } else if (result == KSysGuard::ProcessController::Result::Error) {
         KMessageBox::error(this,
                            i18n("You do not have the permission to change the I/O priority of the process and there "
                                 "was a problem trying to run as root."));
     }
 
     return false;
 }
 
 bool KSysGuardProcessList::changeCpuScheduler(const QList<long long> &pids, KSysGuard::Process::Scheduler newCpuSched, int newCpuSchedPriority)
 {
     auto result = d->mProcessController->setCPUScheduler(pids, newCpuSched, newCpuSchedPriority);
 
     if (result == KSysGuard::ProcessController::Result::Success) {
         updateList();
         return true;
     } else if (result == KSysGuard::ProcessController::Result::Error) {
         KMessageBox::error(this,
                            i18n("You do not have the permission to change the CPU Scheduler for the process and there "
                                 "was a problem trying to run as root."));
     }
     return false;
 }
 
 bool KSysGuardProcessList::killProcesses(const QList<long long> &pids, int sig)
 {
     auto result = d->mProcessController->sendSignal(pids, sig);
 
     if (result == KSysGuard::ProcessController::Result::Success) {
         updateList();
         return true;
     } else if (result == KSysGuard::ProcessController::Result::Error) {
         KMessageBox::error(this,
                            i18n("You do not have the permission to kill the process and there "
                                 "was a problem trying to run as root."));
     }
     return false;
 }
 
 void KSysGuardProcessList::killSelectedProcesses()
 {
     sendSignalToSelectedProcesses(SIGTERM, true);
 }
 
 void KSysGuardProcessList::sendSignalToSelectedProcesses(int sig, bool confirm)
 {
     QModelIndexList selectedIndexes = d->mUi->treeView->selectionModel()->selectedRows();
     QStringList selectedAsStrings;
     QList<long long> selectedPids;
 
     QList<KSysGuard::Process *> processes = selectedProcesses();
     foreach (KSysGuard::Process *process, processes) {
         selectedPids << process->pid();
         if (!confirm)
             continue;
         QString name = d->mModel.getStringForProcess(process);
         selectedAsStrings << name;
     }
 
     if (selectedPids.isEmpty()) {
         if (confirm)
             KMessageBox::error(this, i18n("You must select a process first."));
         return;
     } else if (confirm && (sig == SIGTERM || sig == SIGKILL)) {
         int count = selectedAsStrings.count();
         QString msg;
         QString title;
         QString dontAskAgainKey;
         QString closeButton;
         if (sig == SIGTERM) {
             msg = i18np("Are you sure you want to end this process?  Any unsaved work may be lost.",
                         "Are you sure you want to end these %1 processes?  Any unsaved work may be lost",
                         count);
             title = i18ncp("Dialog title", "End Process", "End %1 Processes", count);
             dontAskAgainKey = QStringLiteral("endconfirmation");
             closeButton = i18n("End");
         } else if (sig == SIGKILL) {
             msg = i18np("<qt>Are you sure you want to <b>immediately and forcibly kill</b> this process?  Any unsaved work may be lost.",
                         "<qt>Are you sure you want to <b>immediately and forcibly kill</b> these %1 processes?  Any unsaved work may be lost",
                         count);
             title = i18ncp("Dialog title", "Forcibly Kill Process", "Forcibly Kill %1 Processes", count);
             dontAskAgainKey = QStringLiteral("killconfirmation");
             closeButton = i18n("Kill");
         }
 
         int res = KMessageBox::warningContinueCancelList(this,
                                                          msg,
                                                          selectedAsStrings,
                                                          title,
                                                          KGuiItem(closeButton, QStringLiteral("process-stop")),
                                                          KStandardGuiItem::cancel(),
                                                          dontAskAgainKey);
         if (res != KMessageBox::Continue)
             return;
     }
 
     // We have shown a GUI dialog box, which processes events etc.
     // So processes is NO LONGER VALID
 
     if (!killProcesses(selectedPids, sig))
         return;
     if (sig == SIGTERM || sig == SIGKILL) {
         foreach (long long pid, selectedPids) {
             KSysGuard::Process *process = d->mModel.getProcess(pid);
             if (process)
                 process->timeKillWasSent().start();
             d->mUi->treeView->selectionModel()->clearSelection();
         }
     }
     updateList();
 }
 
 bool KSysGuardProcessList::showTotals() const
 {
     return d->mModel.showTotals();
 }
 
 void KSysGuardProcessList::setShowTotals(bool showTotals) // slot
 {
     d->mModel.setShowTotals(showTotals);
 }
 
 ProcessModel::Units KSysGuardProcessList::units() const
 {
     return d->mModel.units();
 }
 
 void KSysGuardProcessList::setUnits(ProcessModel::Units unit)
 {
     d->mModel.setUnits(unit);
 }
 
 void KSysGuardProcessList::saveSettings(KConfigGroup &cg)
 {
     /* Note that the ksysguard program does not use these functions.  It saves the settings itself to an xml file instead */
     cg.writeEntry("units", (int)(units()));
     cg.writeEntry("ioUnits", (int)(d->mModel.ioUnits()));
     cg.writeEntry("ioInformation", (int)(d->mModel.ioInformation()));
     cg.writeEntry("showCommandLineOptions", d->mModel.isShowCommandLineOptions());
     cg.writeEntry("normalizeCPUUsage", d->mModel.isNormalizedCPUUsage());
     cg.writeEntry("showTooltips", d->mModel.isShowingTooltips());
     cg.writeEntry("showTotals", showTotals());
     cg.writeEntry("filterState", (int)(state()));
     cg.writeEntry("updateIntervalMSecs", updateIntervalMSecs());
     cg.writeEntry("headerState", d->mUi->treeView->header()->saveState());
     // If we change, say, the header between versions of ksysguard, then the old headerState settings will not be valid.
     // The version property lets us keep track of which version we are
     cg.writeEntry("version", PROCESSHEADERVERSION);
 }
 
 void KSysGuardProcessList::loadSettings(const KConfigGroup &cg)
 {
     /* Note that the ksysguard program does not use these functions.  It saves the settings itself to an xml file instead */
     setUnits((ProcessModel::Units)cg.readEntry("units", (int)ProcessModel::UnitsKB));
     d->mModel.setIoUnits((ProcessModel::Units)cg.readEntry("ioUnits", (int)ProcessModel::UnitsKB));
     d->mModel.setIoInformation((ProcessModel::IoInformation)cg.readEntry("ioInformation", (int)ProcessModel::ActualBytesRate));
     d->mModel.setShowCommandLineOptions(cg.readEntry("showCommandLineOptions", false));
     d->mModel.setNormalizedCPUUsage(cg.readEntry("normalizeCPUUsage", true));
     d->mModel.setShowingTooltips(cg.readEntry("showTooltips", true));
     setShowTotals(cg.readEntry("showTotals", true));
     setStateInt(cg.readEntry("filterState", (int)ProcessFilter::AllProcesses));
     setUpdateIntervalMSecs(cg.readEntry("updateIntervalMSecs", 2000));
     int version = cg.readEntry("version", 0);
     if (version == PROCESSHEADERVERSION) { // If the header has changed, the old settings are no longer valid.  Only restore if version is the same
         restoreHeaderState(cg.readEntry("headerState", QByteArray()));
     }
 }
 
 void KSysGuardProcessList::restoreHeaderState(const QByteArray &state)
 {
     d->mUi->treeView->header()->restoreState(state);
 }
 
 bool KSysGuardProcessList::eventFilter(QObject *obj, QEvent *event)
 {
     if (event->type() == QEvent::KeyPress) {
         QKeyEvent *keyEvent = static_cast<QKeyEvent *>(event);
         if (obj == d->mUi->treeView) {
             if (keyEvent->key() == Qt::Key_Enter || keyEvent->key() == Qt::Key_Return) {
                 d->mUi->treeView->selectionModel()->select(d->mUi->treeView->currentIndex(), QItemSelectionModel::Select | QItemSelectionModel::Rows);
                 showProcessContextMenu(d->mUi->treeView->currentIndex());
                 return true;
 
             } else if (keyEvent->matches(QKeySequence::MoveToPreviousLine) || keyEvent->matches(QKeySequence::SelectPreviousLine)
                        || keyEvent->matches(QKeySequence::MoveToPreviousPage) || keyEvent->matches(QKeySequence::SelectPreviousPage)) {
                 if (d->mUi->treeView->selectionModel()->selectedRows().size() == 1 && d->mUi->treeView->selectionModel()->selectedRows().first().row() == 0) {
                     // when first row is selected, pressing up or pgup moves to the textfield
                     d->mUi->txtFilter->setFocus();
                     return true;
                 }
             } else if (!keyEvent->text().isEmpty() && keyEvent->key() != Qt::Key_Tab
                        && (!keyEvent->modifiers() || keyEvent->modifiers() == Qt::ShiftModifier)) {
                 // move to textfield and forward keyevent if user starts typing from treeview
                 d->mUi->txtFilter->setFocus();
                 QApplication::sendEvent(d->mUi->txtFilter, event);
                 return true;
             }
         } else {
             Q_ASSERT(obj == d->mUi->txtFilter);
             if (d->mUi->treeView->model()->rowCount() == 0) {
                 // treeview is empty, do nothing
                 return false;
             }
 
             if (keyEvent->key() == Qt::Key_Enter || keyEvent->key() == Qt::Key_Return) {
                 // pressing enter will send enter to the first row in the list
                 // the focusin eventfilter will make sure the first row is selected if there was
                 // no previous selection
                 d->mUi->treeView->setFocus();
                 QApplication::sendEvent(d->mUi->treeView, event);
                 return true;
 
             } else if (keyEvent->matches(QKeySequence::MoveToNextLine) || keyEvent->matches(QKeySequence::SelectNextLine)
                        || keyEvent->matches(QKeySequence::MoveToNextPage) || keyEvent->matches(QKeySequence::SelectNextPage)) {
                 // attempting to move down by down-key or pgdown, or pressing enter will move focus
                 // to the treeview
                 d->mUi->treeView->setFocus();
                 return true;
             }
         }
     }
     return false;
 }
 
 ProcessModel *KSysGuardProcessList::processModel()
 {
     return &d->mModel;
 }
 
 void KSysGuardProcessList::setKillButtonVisible(bool visible)
 {
     d->mUi->btnKillProcess->setVisible(visible);
 }
 
 bool KSysGuardProcessList::isKillButtonVisible() const
 {
     return d->mUi->btnKillProcess->isVisible();
 }
 bool KSysGuardProcessList::scriptingEnabled() const
 {
     return !!d->mScripting;
 }
 void KSysGuardProcessList::setScriptingEnabled(bool enabled)
 {
     if (!!d->mScripting == enabled)
         return; // Nothing changed
     if (!enabled) {
         delete d->mScripting;
         d->mScripting = nullptr;
     } else {
         d->mScripting = new Scripting(this);
         d->mScripting->hide();
     }
 }