qt-creator/plugins/qmlprofiler/qv8profilereventview.cpp

/****************************************************************************
**
** Copyright (C) 2013 Digia Plc and/or its subsidiary(-ies).
** Contact: http://www.qt-project.org/legal
**
** This file is part of Qt Creator.
**
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** accordance with the commercial license agreement provided with the
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** use the contact form at http://qt.digia.com/contact-us.
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** General Public License version 2.1 as published by the Free Software
** Foundation and appearing in the file LICENSE.LGPL included in the
** packaging of this file.  Please review the following information to
** ensure the GNU Lesser General Public License version 2.1 requirements
** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
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#include "qv8profilereventview.h"

#include <QUrl>
#include <QHash>

#include <QStandardItem>
#include <QHeaderView>

#include <QApplication>
#include <QClipboard>

#include <QContextMenuEvent>
#include <QDebug>

#include <coreplugin/minisplitter.h>
#include <QVBoxLayout>
#include <QHBoxLayout>

#include "qmlprofilerviewmanager.h"
#include "qmlprofilertool.h"
#include "qv8profilerdatamodel.h"
#include <QMenu>

#include <utils/qtcassert.h>

using namespace QmlDebug;

namespace QmlProfiler {
namespace Internal {

enum ItemRole {
    EventHashStrRole = Qt::UserRole+1,
    FilenameRole = Qt::UserRole+2,
    LineRole = Qt::UserRole+3,
    ColumnRole = Qt::UserRole+4,
    EventIdRole = Qt::UserRole+5
};

////////////////////////////////////////////////////////////////////////////////////


////////////////////////////////////////////////////////////////////////////////////

class EventsViewItem : public QStandardItem
{
public:
    EventsViewItem(const QString &text) : QStandardItem(text) {}

    virtual bool operator<(const QStandardItem &other) const
    {
        if (data().type() == QVariant::String) {
            // first column
            if (column() == 0) {
                return data(FilenameRole).toString() == other.data(FilenameRole).toString() ?
                            data(LineRole).toInt() < other.data(LineRole).toInt() :
                            data(FilenameRole).toString() < other.data(FilenameRole).toString();
            } else {
                return data().toString().toLower() < other.data().toString().toLower();
            }
        }

        return data().toDouble() < other.data().toDouble();
    }
};

////////////////////////////////////////////////////////////////////////////////////

class QV8ProfilerEventsWidget::QV8ProfilerEventsWidgetPrivate
{
public:
    QV8ProfilerEventsWidgetPrivate(QV8ProfilerEventsWidget *qq):q(qq) {}
    ~QV8ProfilerEventsWidgetPrivate() {}

    QV8ProfilerEventsWidget *q;

    Analyzer::IAnalyzerTool *m_profilerTool;
    QmlProfilerViewManager *m_viewContainer;

    QV8ProfilerEventsMainView *m_eventTree;
    QV8ProfilerEventRelativesView *m_eventChildren;
    QV8ProfilerEventRelativesView *m_eventParents;

    QV8ProfilerDataModel *v8Model;
};

QV8ProfilerEventsWidget::QV8ProfilerEventsWidget(QWidget *parent,
                                 Analyzer::IAnalyzerTool *profilerTool,
                                 QmlProfilerViewManager *container,
                                 QmlProfilerModelManager *profilerModelManager )
    : QWidget(parent), d(new QV8ProfilerEventsWidgetPrivate(this))
{
    setObjectName(QLatin1String("QmlProfilerV8ProfileView"));

    d->v8Model = profilerModelManager->v8Model();

    d->m_eventTree = new QV8ProfilerEventsMainView(this, d->v8Model);
    connect(d->m_eventTree, SIGNAL(gotoSourceLocation(QString,int,int)), this, SIGNAL(gotoSourceLocation(QString,int,int)));

    d->m_eventChildren = new QV8ProfilerEventRelativesView(d->v8Model,
                                                           QV8ProfilerEventRelativesView::ChildrenView,
                                                           this);
    d->m_eventParents = new QV8ProfilerEventRelativesView(d->v8Model,
                                                          QV8ProfilerEventRelativesView::ParentsView,
                                                          this);
    connect(d->m_eventTree, SIGNAL(eventSelected(int)), d->m_eventChildren, SLOT(displayEvent(int)));
    connect(d->m_eventTree, SIGNAL(eventSelected(int)), d->m_eventParents, SLOT(displayEvent(int)));
    connect(d->m_eventChildren, SIGNAL(eventClicked(int)), d->m_eventTree, SLOT(selectEvent(int)));
    connect(d->m_eventParents, SIGNAL(eventClicked(int)), d->m_eventTree, SLOT(selectEvent(int)));

    // widget arrangement
    QVBoxLayout *groupLayout = new QVBoxLayout;
    groupLayout->setContentsMargins(0,0,0,0);
    groupLayout->setSpacing(0);

    Core::MiniSplitter *splitterVertical = new Core::MiniSplitter;
    splitterVertical->addWidget(d->m_eventTree);
    Core::MiniSplitter *splitterHorizontal = new Core::MiniSplitter;
    splitterHorizontal->addWidget(d->m_eventParents);
    splitterHorizontal->addWidget(d->m_eventChildren);
    splitterHorizontal->setOrientation(Qt::Horizontal);
    splitterVertical->addWidget(splitterHorizontal);
    splitterVertical->setOrientation(Qt::Vertical);
    splitterVertical->setStretchFactor(0,5);
    splitterVertical->setStretchFactor(1,2);
    groupLayout->addWidget(splitterVertical);
    setLayout(groupLayout);

    d->m_profilerTool = profilerTool;
    d->m_viewContainer = container;

}

QV8ProfilerEventsWidget::~QV8ProfilerEventsWidget()
{
    delete d;
}

void QV8ProfilerEventsWidget::clear()
{
    d->m_eventTree->clear();
    d->m_eventChildren->clear();
    d->m_eventParents->clear();
}

QModelIndex QV8ProfilerEventsWidget::selectedItem() const
{
    return d->m_eventTree->selectedItem();
}

void QV8ProfilerEventsWidget::contextMenuEvent(QContextMenuEvent *ev)
{
    QTC_ASSERT(d->m_viewContainer, return;);

    QMenu menu;
    QAction *copyRowAction = 0;
    QAction *copyTableAction = 0;

    QmlProfilerTool *profilerTool = qobject_cast<QmlProfilerTool *>(d->m_profilerTool);
    QPoint position = ev->globalPos();

    if (profilerTool) {
        QList <QAction *> commonActions = profilerTool->profilerContextMenuActions();
        foreach (QAction *act, commonActions) {
            menu.addAction(act);
        }
    }

    if (mouseOnTable(position)) {
        menu.addSeparator();
        if (selectedItem().isValid())
            copyRowAction = menu.addAction(tr("Copy Row"));
        copyTableAction = menu.addAction(tr("Copy Table"));
    }

    QAction *selectedAction = menu.exec(position);

    if (selectedAction) {
        if (selectedAction == copyRowAction)
            copyRowToClipboard();
        if (selectedAction == copyTableAction)
            copyTableToClipboard();
    }
}

void QV8ProfilerEventsWidget::resizeEvent(QResizeEvent *event)
{
    QWidget::resizeEvent(event);
    emit resized();
}

bool QV8ProfilerEventsWidget::mouseOnTable(const QPoint &position) const
{
    QPoint tableTopLeft = d->m_eventTree->mapToGlobal(QPoint(0,0));
    QPoint tableBottomRight = d->m_eventTree->mapToGlobal(QPoint(d->m_eventTree->width(), d->m_eventTree->height()));
    return (position.x() >= tableTopLeft.x() && position.x() <= tableBottomRight.x() && position.y() >= tableTopLeft.y() && position.y() <= tableBottomRight.y());
}

void QV8ProfilerEventsWidget::copyTableToClipboard() const
{
    d->m_eventTree->copyTableToClipboard();
}

void QV8ProfilerEventsWidget::copyRowToClipboard() const
{
    d->m_eventTree->copyRowToClipboard();
}

void QV8ProfilerEventsWidget::updateSelectedEvent(int eventId) const
{
    if (d->m_eventTree->selectedEventId() != eventId)
        d->m_eventTree->selectEvent(eventId);
}

void QV8ProfilerEventsWidget::selectBySourceLocation(const QString &filename, int line, int column)
{
    // This slot is used to connect the javascript pane with the qml events pane
    // Our javascript trace data does not store column information
    // thus we ignore it here
    Q_UNUSED(column);
    d->m_eventTree->selectEventByLocation(filename, line);
}

////////////////////////////////////////////////////////////////////////////////////

class QV8ProfilerEventsMainView::QV8ProfilerEventsMainViewPrivate
{
public:
    QV8ProfilerEventsMainViewPrivate(QV8ProfilerEventsMainView *qq) : q(qq) {}

    void buildV8ModelFromList( const QList<QV8EventData *> &list );
    int getFieldCount();

    QString textForItem(QStandardItem *item, bool recursive) const;


    QV8ProfilerEventsMainView *q;

    QV8ProfilerDataModel *m_v8Model;
    QStandardItemModel *m_model;
    QList<bool> m_fieldShown;
    QHash<int, int> m_columnIndex; // maps field enum to column index
    int m_firstNumericColumn;
    bool m_preventSelectBounce;
};


////////////////////////////////////////////////////////////////////////////////////

QV8ProfilerEventsMainView::QV8ProfilerEventsMainView(QWidget *parent,
                                   QV8ProfilerDataModel *v8Model)
: QmlProfilerTreeView(parent), d(new QV8ProfilerEventsMainViewPrivate(this))
{
    setObjectName(QLatin1String("QmlProfilerEventsTable"));
    setSortingEnabled(false);

    d->m_model = new QStandardItemModel(this);
    setModel(d->m_model);
    connect(this,SIGNAL(clicked(QModelIndex)), this,SLOT(jumpToItem(QModelIndex)));

    d->m_v8Model = v8Model;
    connect(d->m_v8Model, SIGNAL(changed()), this, SLOT(buildModel()));
    d->m_firstNumericColumn = 0;
    d->m_preventSelectBounce = false;

    setFieldViewable(Name, true);
    setFieldViewable(Type, false);
    setFieldViewable(Percent, true);
    setFieldViewable(TotalDuration, true);
    setFieldViewable(SelfPercent, true);
    setFieldViewable(SelfDuration, true);
    setFieldViewable(CallCount, false);
    setFieldViewable(TimePerCall, false);
    setFieldViewable(MaxTime, false);
    setFieldViewable(MinTime, false);
    setFieldViewable(MedianTime, false);
    setFieldViewable(Details, true);

    buildModel();
}

QV8ProfilerEventsMainView::~QV8ProfilerEventsMainView()
{
    clear();
    delete d->m_model;
    delete d;
}

void QV8ProfilerEventsMainView::setFieldViewable(Fields field, bool show)
{
    if (field < MaxFields) {
        int length = d->m_fieldShown.count();
        if (field >= length) {
            for (int i=length; i<MaxFields; i++)
                d->m_fieldShown << false;
        }
        d->m_fieldShown[field] = show;
    }
}


void QV8ProfilerEventsMainView::setHeaderLabels()
{
    int fieldIndex = 0;
    d->m_firstNumericColumn = 0;

    d->m_columnIndex.clear();
    if (d->m_fieldShown[Name]) {
        d->m_columnIndex[Name] = fieldIndex;
        d->m_model->setHeaderData(fieldIndex++, Qt::Horizontal, QVariant(tr("Location")));
        d->m_firstNumericColumn++;
    }
    if (d->m_fieldShown[Type]) {
        d->m_columnIndex[Type] = fieldIndex;
        d->m_model->setHeaderData(fieldIndex++, Qt::Horizontal, QVariant(tr("Type")));
        d->m_firstNumericColumn++;
    }
    if (d->m_fieldShown[Percent]) {
        d->m_columnIndex[Percent] = fieldIndex;
        d->m_model->setHeaderData(fieldIndex++, Qt::Horizontal, QVariant(tr("Time in Percent")));
    }
    if (d->m_fieldShown[TotalDuration]) {
        d->m_columnIndex[TotalDuration] = fieldIndex;
        d->m_model->setHeaderData(fieldIndex++, Qt::Horizontal, QVariant(tr("Total Time")));
    }
    if (d->m_fieldShown[SelfPercent]) {
        d->m_columnIndex[Type] = fieldIndex;
        d->m_model->setHeaderData(fieldIndex++, Qt::Horizontal, QVariant(tr("Self Time in Percent")));
    }
    if (d->m_fieldShown[SelfDuration]) {
        d->m_columnIndex[SelfDuration] = fieldIndex;
        d->m_model->setHeaderData(fieldIndex++, Qt::Horizontal, QVariant(tr("Self Time")));
    }
    if (d->m_fieldShown[CallCount]) {
        d->m_columnIndex[CallCount] = fieldIndex;
        d->m_model->setHeaderData(fieldIndex++, Qt::Horizontal, QVariant(tr("Calls")));
    }
    if (d->m_fieldShown[TimePerCall]) {
        d->m_columnIndex[TimePerCall] = fieldIndex;
        d->m_model->setHeaderData(fieldIndex++, Qt::Horizontal, QVariant(tr("Mean Time")));
    }
    if (d->m_fieldShown[MedianTime]) {
        d->m_columnIndex[MedianTime] = fieldIndex;
        d->m_model->setHeaderData(fieldIndex++, Qt::Horizontal, QVariant(tr("Median Time")));
    }
    if (d->m_fieldShown[MaxTime]) {
        d->m_columnIndex[MaxTime] = fieldIndex;
        d->m_model->setHeaderData(fieldIndex++, Qt::Horizontal, QVariant(tr("Longest Time")));
    }
    if (d->m_fieldShown[MinTime]) {
        d->m_columnIndex[MinTime] = fieldIndex;
        d->m_model->setHeaderData(fieldIndex++, Qt::Horizontal, QVariant(tr("Shortest Time")));
    }
    if (d->m_fieldShown[Details]) {
        d->m_columnIndex[Details] = fieldIndex;
        d->m_model->setHeaderData(fieldIndex++, Qt::Horizontal, QVariant(tr("Details")));
    }
}

void QV8ProfilerEventsMainView::clear()
{
    d->m_model->clear();
    d->m_model->setColumnCount(d->getFieldCount());

    setHeaderLabels();
    setSortingEnabled(false);
}

int QV8ProfilerEventsMainView::QV8ProfilerEventsMainViewPrivate::getFieldCount()
{
    int count = 0;
    for (int i=0; i < m_fieldShown.count(); ++i)
        if (m_fieldShown[i])
            count++;
    return count;
}

void QV8ProfilerEventsMainView::buildModel()
{
    clear();
    d->buildV8ModelFromList( d->m_v8Model->getV8Events() );

    setRootIsDecorated(false);
    setSortingEnabled(true);
    sortByColumn(d->m_firstNumericColumn,Qt::DescendingOrder);

    expandAll();
    if (d->m_fieldShown[Name])
        resizeColumnToContents(0);

    if (d->m_fieldShown[Type])
        resizeColumnToContents(d->m_fieldShown[Name]?1:0);
    collapseAll();
}

void QV8ProfilerEventsMainView::QV8ProfilerEventsMainViewPrivate::buildV8ModelFromList(const QList<QV8EventData *> &list)
{
    for (int index = 0; index < list.count(); index++) {
        QV8EventData *v8event = list.at(index);
        QList<QStandardItem *> newRow;

        if (m_fieldShown[Name])
            newRow << new EventsViewItem(v8event->displayName);

        if (m_fieldShown[Percent]) {
            newRow << new EventsViewItem(QString::number(v8event->totalPercent,'f',2)+QLatin1String(" %"));
            newRow.last()->setData(QVariant(v8event->totalPercent));
        }

        if (m_fieldShown[TotalDuration]) {
            newRow << new EventsViewItem(displayTime(v8event->totalTime));
            newRow.last()->setData(QVariant(v8event->totalTime));
        }

        if (m_fieldShown[SelfPercent]) {
            newRow << new EventsViewItem(QString::number(v8event->selfPercent,'f',2)+QLatin1String(" %"));
            newRow.last()->setData(QVariant(v8event->selfPercent));
        }

        if (m_fieldShown[SelfDuration]) {
            newRow << new EventsViewItem(displayTime(v8event->selfTime));
            newRow.last()->setData(QVariant(v8event->selfTime));
        }

        if (m_fieldShown[Details]) {
            newRow << new EventsViewItem(v8event->functionName);
            newRow.last()->setData(QVariant(v8event->functionName));
        }

        if (!newRow.isEmpty()) {
            // no edit
            foreach (QStandardItem *item, newRow)
                item->setEditable(false);

            // metadata
            newRow.at(0)->setData(QString::fromLatin1("%1:%2").arg(v8event->filename, QString::number(v8event->line)), EventHashStrRole);
            newRow.at(0)->setData(QVariant(v8event->filename), FilenameRole);
            newRow.at(0)->setData(QVariant(v8event->line), LineRole);
            newRow.at(0)->setData(QVariant(0),ColumnRole); // v8 events have no column info
            newRow.at(0)->setData(QVariant(v8event->eventId), EventIdRole);

            // append
            m_model->invisibleRootItem()->appendRow(newRow);
        }
    }
}

QString QV8ProfilerEventsMainView::displayTime(double time)
{
    if (time < 1e6)
        return QString::number(time/1e3,'f',3) + trUtf8(" \xc2\xb5s");
    if (time < 1e9)
        return QString::number(time/1e6,'f',3) + tr(" ms");

    return QString::number(time/1e9,'f',3) + tr(" s");
}

QString QV8ProfilerEventsMainView::nameForType(int typeNumber)
{
    switch (typeNumber) {
    case 0: return QV8ProfilerEventsMainView::tr("Paint");
    case 1: return QV8ProfilerEventsMainView::tr("Compile");
    case 2: return QV8ProfilerEventsMainView::tr("Create");
    case 3: return QV8ProfilerEventsMainView::tr("Binding");
    case 4: return QV8ProfilerEventsMainView::tr("Signal");
    }
    return QString();
}

int QV8ProfilerEventsMainView::selectedEventId() const
{
    QModelIndex index = selectedItem();
    if (!index.isValid())
        return -1;
    QStandardItem *item = d->m_model->item(index.row(), 0);
    return item->data(EventIdRole).toInt();
}

void QV8ProfilerEventsMainView::jumpToItem(const QModelIndex &index)
{
    if (d->m_preventSelectBounce)
        return;

    d->m_preventSelectBounce = true;
    QStandardItem *clickedItem = d->m_model->itemFromIndex(index);
    QStandardItem *infoItem;
    if (clickedItem->parent())
        infoItem = clickedItem->parent()->child(clickedItem->row(), 0);
    else
        infoItem = d->m_model->item(index.row(), 0);

    // show in editor
    int line = infoItem->data(LineRole).toInt();
    int column = infoItem->data(ColumnRole).toInt();
    QString fileName = infoItem->data(FilenameRole).toString();
    if (line!=-1 && !fileName.isEmpty())
        emit gotoSourceLocation(fileName, line, column);

    // show in callers/callees subwindow
    emit eventSelected(infoItem->data(EventIdRole).toInt());

    // show in timelinerenderer
    emit showEventInTimeline(infoItem->data(EventIdRole).toInt());

    d->m_preventSelectBounce = false;
}

void QV8ProfilerEventsMainView::selectEvent(int eventId)
{
    for (int i=0; i<d->m_model->rowCount(); i++) {
        QStandardItem *infoItem = d->m_model->item(i, 0);
        if (infoItem->data(EventIdRole).toInt() == eventId) {
            setCurrentIndex(d->m_model->indexFromItem(infoItem));
            jumpToItem(currentIndex());
            return;
        }
    }
}

void QV8ProfilerEventsMainView::selectEventByLocation(const QString &filename, int line)
{
    if (d->m_preventSelectBounce)
        return;

    for (int i=0; i<d->m_model->rowCount(); i++) {
        QStandardItem *infoItem = d->m_model->item(i, 0);
        if (currentIndex() != d->m_model->indexFromItem(infoItem) && infoItem->data(FilenameRole).toString() == filename && infoItem->data(LineRole).toInt() == line) {
            setCurrentIndex(d->m_model->indexFromItem(infoItem));
            jumpToItem(currentIndex());
            return;
        }
    }
}

QModelIndex QV8ProfilerEventsMainView::selectedItem() const
{
    QModelIndexList sel = selectedIndexes();
    if (sel.isEmpty())
        return QModelIndex();
    else
        return sel.first();
}

void QV8ProfilerEventsMainView::changeDetailsForEvent(int eventId, const QString &newString)
{
    for (int i=0; i<d->m_model->rowCount(); i++) {
        QStandardItem *infoItem = d->m_model->item(i, 0);
        if (infoItem->data(EventIdRole).toInt() == eventId) {
            d->m_model->item(i,d->m_columnIndex[Details])->setData(QVariant(newString),Qt::DisplayRole);
            d->m_model->item(i,d->m_columnIndex[Details])->setData(QVariant(newString));
            return;
        }
    }
}

QString QV8ProfilerEventsMainView::QV8ProfilerEventsMainViewPrivate::textForItem(QStandardItem *item, bool recursive = true) const
{
    QString str;

    if (recursive) {
        // indentation
        QStandardItem *itemParent = item->parent();
        while (itemParent) {
            str += QLatin1String("    ");
            itemParent = itemParent->parent();
        }
    }

    // item's data
    int colCount = m_model->columnCount();
    for (int j = 0; j < colCount; ++j) {
        QStandardItem *colItem = item->parent() ? item->parent()->child(item->row(),j) : m_model->item(item->row(),j);
        str += colItem->data(Qt::DisplayRole).toString();
        if (j < colCount-1) str += QLatin1Char('\t');
    }
    str += QLatin1Char('\n');

    // recursively print children
    if (recursive && item->child(0))
        for (int j = 0; j != item->rowCount(); j++)
            str += textForItem(item->child(j));

    return str;
}

void QV8ProfilerEventsMainView::copyTableToClipboard() const
{
    QString str;
    // headers
    int columnCount = d->m_model->columnCount();
    for (int i = 0; i < columnCount; ++i) {
        str += d->m_model->headerData(i, Qt::Horizontal, Qt::DisplayRole).toString();
        if (i < columnCount - 1)
            str += QLatin1Char('\t');
        else
            str += QLatin1Char('\n');
    }
    // data
    int rowCount = d->m_model->rowCount();
    for (int i = 0; i != rowCount; ++i) {
        str += d->textForItem(d->m_model->item(i));
    }
    QClipboard *clipboard = QApplication::clipboard();
    clipboard->setText(str, QClipboard::Selection);
    clipboard->setText(str, QClipboard::Clipboard);
}

void QV8ProfilerEventsMainView::copyRowToClipboard() const
{
    QString str;
    str = d->textForItem(d->m_model->itemFromIndex(selectedItem()), false);

    QClipboard *clipboard = QApplication::clipboard();
    clipboard->setText(str, QClipboard::Selection);
    clipboard->setText(str, QClipboard::Clipboard);
}

////////////////////////////////////////////////////////////////////////////////////

QV8ProfilerEventRelativesView::QV8ProfilerEventRelativesView(QV8ProfilerDataModel *model,
                                                             SubViewType viewType,
                                                             QWidget *parent)
    : QmlProfilerTreeView(parent)
    , m_type(viewType)
    , m_v8Model(model)
    , m_model(new QStandardItemModel(this))
{
    setModel(m_model);

    updateHeader();
    setSortingEnabled(false);

    connect(this, SIGNAL(clicked(QModelIndex)), this, SLOT(jumpToItem(QModelIndex)));
}

QV8ProfilerEventRelativesView::~QV8ProfilerEventRelativesView()
{
}

void QV8ProfilerEventRelativesView::displayEvent(int index)
{
    QV8EventData *event = m_v8Model->v8EventDescription(index);
    QTC_CHECK(event);

    QList<QV8EventSub*> events;
    if (m_type == ParentsView)
        events = event->parentHash.values();
    else
        events = event->childrenHash.values();

    rebuildTree(events);

    updateHeader();
    resizeColumnToContents(0);
    setSortingEnabled(true);
    sortByColumn(1);
}

void QV8ProfilerEventRelativesView::rebuildTree(QList<QV8EventSub*> events)
{
    clear();

    QStandardItem *topLevelItem = m_model->invisibleRootItem();

    foreach (QV8EventSub *event, events) {
        QList<QStandardItem *> newRow;
        newRow << new EventsViewItem(event->reference->displayName);
        newRow << new EventsViewItem(QV8ProfilerEventsMainView::displayTime(event->totalTime));
        newRow << new EventsViewItem(event->reference->functionName);
        newRow.at(0)->setData(QVariant(event->reference->eventId), EventIdRole);
        newRow.at(1)->setData(QVariant(event->totalTime));

        foreach (QStandardItem *item, newRow)
            item->setEditable(false);

        topLevelItem->appendRow(newRow);
    }
}

void QV8ProfilerEventRelativesView::clear()
{
    m_model->clear();
}

void QV8ProfilerEventRelativesView::updateHeader()
{
    m_model->setColumnCount(3);

    int columnIndex = 0;
    if (m_type == ChildrenView)
        m_model->setHeaderData(columnIndex++, Qt::Horizontal, QVariant(tr("Callee")));
    else
        m_model->setHeaderData(columnIndex++, Qt::Horizontal, QVariant(tr("Caller")));

    m_model->setHeaderData(columnIndex++, Qt::Horizontal, QVariant(tr("Type")));

    m_model->setHeaderData(columnIndex++, Qt::Horizontal, QVariant(tr("Total Time")));

    m_model->setHeaderData(columnIndex++, Qt::Horizontal, QVariant(tr("Calls")));

    if (m_type == ChildrenView)
        m_model->setHeaderData(columnIndex++, Qt::Horizontal, QVariant(tr("Callee Description")));
    else
        m_model->setHeaderData(columnIndex++, Qt::Horizontal, QVariant(tr("Caller Description")));
}

void QV8ProfilerEventRelativesView::jumpToItem(const QModelIndex &index)
{
    QStandardItem *infoItem = m_model->item(index.row(), 0);
    emit eventClicked(infoItem->data(EventIdRole).toInt());
}

} // namespace Internal
} // namespace QmlProfiler