breakhandler.cpp 20.2 KB
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/**************************************************************************
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**
** This file is part of Qt Creator
**
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** Copyright (c) 2009 Nokia Corporation and/or its subsidiary(-ies).
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**
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** Contact: Nokia Corporation (qt-info@nokia.com)
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**
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** Commercial Usage
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**
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** Licensees holding valid Qt Commercial licenses may use this file in
** accordance with the Qt Commercial License Agreement provided with the
** Software or, alternatively, in accordance with the terms contained in
** a written agreement between you and Nokia.
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**
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** GNU Lesser General Public License Usage
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**
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** Alternatively, this file may be used under the terms of the GNU Lesser
** 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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**
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** If you are unsure which license is appropriate for your use, please
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** contact the sales department at http://www.qtsoftware.com/contact.
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**
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**************************************************************************/
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#include "breakhandler.h"

#include "imports.h" // TextEditor::BaseTextMark
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#include <utils/qtcassert.h>
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#include <QtCore/QDebug>
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#include <QtCore/QTextStream>
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#include <QtCore/QFileInfo>

using namespace Debugger;
using namespace Debugger::Internal;


//////////////////////////////////////////////////////////////////
//
// BreakpointMarker
//
//////////////////////////////////////////////////////////////////

namespace Debugger {
namespace Internal {

// The red blob on the left side in the cpp editor.
class BreakpointMarker : public TextEditor::BaseTextMark
{
    Q_OBJECT
public:
    BreakpointMarker(BreakpointData *data, const QString &fileName, int lineNumber)
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      : BaseTextMark(fileName, lineNumber)
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    {
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        m_data = data;
        m_pending = true;
        m_enabled = true;
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        //qDebug() << "CREATE MARKER " << fileName << lineNumber;
    }

    ~BreakpointMarker()
    {
        //qDebug() << "REMOVE MARKER ";
        m_data = 0;
    }

    QIcon icon() const
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    {
        return icon(m_pending, m_enabled);
    }

    static const QIcon &icon(bool pending, bool enabled)
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    {
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        static const QIcon icon(":/debugger/images/breakpoint.svg");
        static const QIcon icon1(":/debugger/images/breakpoint_disabled.svg");
        static const QIcon icon2(":/debugger/images/breakpoint_pending.svg");
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        return enabled ? (pending ? icon2 : icon) : icon1;
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    }

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    void setPending(bool pending, bool enabled)
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    {
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        if (pending == m_pending && enabled == m_enabled)
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            return;
        m_pending = pending;
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        m_enabled = enabled;
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        updateMarker();
    }

    void updateBlock(const QTextBlock &)
    {
        //qDebug() << "BREAKPOINT MARKER UPDATE BLOCK";
    }

    void removedFromEditor()
    {
        if (!m_data)
            return;

        BreakHandler *handler = m_data->handler();
        handler->removeBreakpoint(handler->indexOf(m_data));
        handler->saveBreakpoints();
        handler->updateMarkers();
    }

    void updateLineNumber(int lineNumber)
    {
        if (!m_data)
            return;
        //if (m_data->markerLineNumber == lineNumber)
        //    return;
        if (m_data->markerLineNumber != lineNumber) {
            m_data->markerLineNumber = lineNumber;
            // FIXME: should we tell gdb about the change? 
            // Ignore it for now, as we would require re-compilation
            // and debugger re-start anyway.
            if (0 && !m_data->bpLineNumber.isEmpty()) {
                if (!m_data->bpNumber.trimmed().isEmpty()) {
                    m_data->pending = true;
                }
            }
        }
        m_data->lineNumber = QString::number(lineNumber);
        m_data->handler()->updateMarkers();
    }

private:
    BreakpointData *m_data;
    bool m_pending;
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    bool m_enabled;
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};

} // namespace Internal
} // namespace Debugger



//////////////////////////////////////////////////////////////////
//
// BreakpointData
//
//////////////////////////////////////////////////////////////////

BreakpointData::BreakpointData(BreakHandler *handler)
{
    //qDebug() << "CREATE BREAKPOINTDATA" << this;
    m_handler = handler;
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    enabled = true;
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    pending = true;
    marker = 0;
    markerLineNumber = 0;
    bpMultiple = false;
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//#if defined(Q_OS_MAC)
//    // full names do not work on Mac/MI
    useFullPath = false; 
//#else
//    //where = m_manager->shortName(data->fileName);
//    useFullPath = true; 
//#endif
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}

BreakpointData::~BreakpointData()
{
    removeMarker();
    //qDebug() << "DESTROY BREAKPOINTDATA" << this;
}

void BreakpointData::removeMarker()
{
    BreakpointMarker *m = marker;
    marker = 0;
    delete m;
}

void BreakpointData::updateMarker()
{
    if (marker && (markerFileName != marker->fileName()
            || markerLineNumber != marker->lineNumber()))
        removeMarker();

    if (!marker && !markerFileName.isEmpty() && markerLineNumber > 0)
        marker = new BreakpointMarker(this, markerFileName, markerLineNumber);

    if (marker)
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        marker->setPending(pending, enabled);
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}

QString BreakpointData::toToolTip() const
{
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    QString rc;
    QTextStream str(&rc);
    str << "<html><body><table>";
    str << "<tr><td>" << BreakHandler::tr("Marker File:") << "</td><td>" << markerFileName << "</td></tr>";
    str << "<tr><td>" << BreakHandler::tr("Marker Line:") << "</td><td>" << markerLineNumber << "</td></tr>";
    str << "<tr><td>" << BreakHandler::tr("Breakpoint Number:") << "</td><td>" << bpNumber << "</td></tr>";
    str << "<tr><td>" << BreakHandler::tr("Breakpoint Address:") << "</td><td>" << bpAddress << "</td></tr>";
    str << "</table><br><hr><table>";
    str << "<tr><th>" << BreakHandler::tr("Property")
        << "</th><th>" << BreakHandler::tr("Requested")
        << "</th><th>" << BreakHandler::tr("Obtained") << "</th></tr>";
    str << "<tr><td>" << BreakHandler::tr("Internal Number:") << "</td><td>&mdash;</td><td>" << bpNumber << "</td></tr>";
    str << "<tr><td>" << BreakHandler::tr("File Name:") << "</td><td>" << fileName << "</td><td>" << bpFileName << "</td></tr>";
    str << "<tr><td>" << BreakHandler::tr("Function Name:") << "</td><td>" << funcName << "</td><td>" << bpFuncName << "</td></tr>";
    str << "<tr><td>" << BreakHandler::tr("Line Number:") << "</td><td>" << lineNumber << "</td><td>" << bpLineNumber << "</td></tr>";
    str << "<tr><td>" << BreakHandler::tr("Condition:") << "</td><td>" << condition << "</td><td>" << bpCondition << "</td></tr>";
    str << "<tr><td>" << BreakHandler::tr("Ignore Count:") << "</td><td>" << ignoreCount << "</td><td>" << bpIgnoreCount << "</td></tr>";
    str << "</table></body></html>";
    return rc;
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}

bool BreakpointData::isLocatedAt(const QString &fileName_, int lineNumber_) const
{
    /*
    if (lineNumber != QString::number(lineNumber_))
        return false;
    if (fileName == fileName_)
        return true;
    if (fileName_.endsWith(fileName))
        return true;
    return false;
    */
    return lineNumber_ == markerLineNumber && fileName_ == markerFileName;
}

bool BreakpointData::conditionsMatch() const
{
    // same versions of gdb "beautify" the passed condition
    QString s1 = condition;
    s1.remove(QChar(' '));
    QString s2 = bpCondition;
    s2.remove(QChar(' '));
    return s1 == s2;
}


//////////////////////////////////////////////////////////////////
//
// BreakHandler
//
//////////////////////////////////////////////////////////////////

BreakHandler::BreakHandler(QObject *parent)
    : QAbstractItemModel(parent)
{
}

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BreakHandler::~BreakHandler()
{
    clear();
}

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int BreakHandler::columnCount(const QModelIndex &parent) const
{
    return parent.isValid() ? 0 : 6;
}

int BreakHandler::rowCount(const QModelIndex &parent) const
{
    return parent.isValid() ? 0 : size();
}

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bool BreakHandler::hasPendingBreakpoints() const
{
    for (int i = size() - 1; i >= 0; i--)
        if (at(i)->pending)
            return true;
    return false;
}

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void BreakHandler::removeAt(int index)
{
    BreakpointData *data = at(index);
    m_bp.removeAt(index);
    delete data;
}

void BreakHandler::clear()
{
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    qDeleteAll(m_bp);
    m_bp.clear();
    m_enabled.clear();
    m_disabled.clear();
    m_removed.clear();
    m_inserted.clear();
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}

int BreakHandler::findBreakpoint(const BreakpointData &needle)
{
    // looks for a breakpoint we might refer to
    for (int index = 0; index != size(); ++index) {
        const BreakpointData *data = at(index);
        // clear hit.
        if (data->bpNumber == needle.bpNumber)
            return index;
        // at least at a position we were looking for
        // FIXME: breaks multiple breakpoints at the same location
        if (data->fileName == needle.bpFileName
                && data->lineNumber == needle.bpLineNumber)
            return index;
    }
    return -1;
}

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int BreakHandler::findBreakpoint(const QString &fileName, int lineNumber)
{
    for (int index = 0; index != size(); ++index)
        if (at(index)->isLocatedAt(fileName, lineNumber))
            return index;
    return -1;
}

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int BreakHandler::findBreakpoint(int bpNumber)
{
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    if (!size())
        return -1;
    QString numStr = QString::number(bpNumber);
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    for (int index = 0; index != size(); ++index)
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        if (at(index)->bpNumber == numStr)
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            return index;
    return -1;
}

void BreakHandler::saveBreakpoints()
{
    QList<QVariant> list;
    for (int index = 0; index != size(); ++index) {
        const BreakpointData *data = at(index);
        QMap<QString, QVariant> map;
        if (!data->fileName.isEmpty())
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            map.insert(QLatin1String("filename"), data->fileName);
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        if (!data->lineNumber.isEmpty())
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            map.insert(QLatin1String("linenumber"), data->lineNumber);
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        if (!data->funcName.isEmpty())
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            map.insert(QLatin1String("funcname"), data->funcName);
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        if (!data->condition.isEmpty())
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            map.insert(QLatin1String("condition"), data->condition);
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        if (!data->ignoreCount.isEmpty())
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            map.insert(QLatin1String("ignorecount"), data->ignoreCount);
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        if (!data->enabled)
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            map.insert(QLatin1String("disabled"), QLatin1String("1"));
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        if (data->useFullPath)
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            map.insert(QLatin1String("usefullpath"), QLatin1String("1"));
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        list.append(map);
    }
    setSessionValueRequested("Breakpoints", list);
}

void BreakHandler::loadBreakpoints()
{
    QVariant value;
    sessionValueRequested("Breakpoints", &value);
    QList<QVariant> list = value.toList();
    clear();
    foreach (const QVariant &var, list) {
        const QMap<QString, QVariant> map = var.toMap();
        BreakpointData *data = new BreakpointData(this);
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        QVariant v = map.value(QLatin1String("filename"));
        if (v.isValid())
            data->fileName = v.toString();
        v = map.value(QLatin1String("linenumber"));
        if (v.isValid())
            data->lineNumber = v.toString();
        v = map.value(QLatin1String("condition"));
        if (v.isValid())
            data->condition = v.toString();
        v = map.value(QLatin1String("ignorecount"));
        if (v.isValid())
            data->ignoreCount = v.toInt();
        v = map.value(QLatin1String("funcname"));
        if (v.isValid())
            data->funcName = v.toString();
        v = map.value(QLatin1String("disabled"));
        if (v.isValid())
            data->enabled = !v.toInt();
        v = map.value(QLatin1String("usefullpath"));
        if (v.isValid())
            data->useFullPath = bool(v.toInt());
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        data->markerFileName = data->fileName;
        data->markerLineNumber = data->lineNumber.toInt();
        append(data);
    }
}

void BreakHandler::resetBreakpoints()
{
    for (int index = size(); --index >= 0;) {
        BreakpointData *data = at(index);
        data->pending = true;
        data->bpNumber.clear();
        data->bpFuncName.clear();
        data->bpFileName.clear();
        data->bpLineNumber.clear();
        data->bpCondition.clear();
        data->bpIgnoreCount.clear();
        // keep marker data if it was primary
        if (data->markerFileName != data->fileName)
            data->markerFileName.clear();
        if (data->markerLineNumber != data->lineNumber.toInt())
            data->markerLineNumber = 0;
    }
}

void BreakHandler::updateMarkers()
{
    for (int index = 0; index != size(); ++index)
        at(index)->updateMarker();
    emit layoutChanged();
}

QVariant BreakHandler::headerData(int section,
    Qt::Orientation orientation, int role) const
{
    if (orientation == Qt::Horizontal && role == Qt::DisplayRole) {
        static QString headers[] = {
            tr("Number"),  tr("Function"), tr("File"), tr("Line"),
            tr("Condition"), tr("Ignore")
        };
        return headers[section];
    }
    return QVariant();
}

QVariant BreakHandler::data(const QModelIndex &mi, int role) const
{
    static const QString empty = QString(QLatin1Char('-'));

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    QTC_ASSERT(mi.isValid(), return QVariant());
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    if (mi.row() >= size())
        return QVariant();

    const BreakpointData *data = at(mi.row());
    switch (mi.column()) {
        case 0:
            if (role == Qt::DisplayRole) {
                QString str = data->bpNumber;
                return str.isEmpty() ? empty : str;
            }
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            //if (role == Qt::CheckStateRole)
            //    return data->enabled ? Qt::Checked : Qt::Unchecked;
            if (role == Qt::UserRole)
                return data->enabled;
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            if (role == Qt::DecorationRole)
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                return BreakpointMarker::icon(data->pending, data->enabled);
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            break;
        case 1:
            if (role == Qt::DisplayRole) {
                QString str = data->pending ? data->funcName : data->bpFuncName;
                return str.isEmpty() ? empty : str;
            }
            break;
        case 2:
            if (role == Qt::DisplayRole) {
                QString str = data->pending ? data->fileName : data->bpFileName;
                str = QFileInfo(str).fileName();
                //if (data->bpMultiple && str.isEmpty() && !data->markerFileName.isEmpty())
                //    str = data->markerFileName;
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                str = str.isEmpty() ? empty : str;
                if (data->useFullPath)
                    str = "/.../" + str; 
                return str;
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            }
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            if (role == Qt::UserRole)
                return data->useFullPath;
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            break;
        case 3:
            if (role == Qt::DisplayRole) {
                QString str = data->pending ? data->lineNumber : data->bpLineNumber;
                //if (data->bpMultiple && str.isEmpty() && !data->markerFileName.isEmpty())
                //    str = data->markerLineNumber;
                return str.isEmpty() ? empty : str;
            }
            break;
        case 4:
            if (role == Qt::DisplayRole)
                return data->pending ? data->condition : data->bpCondition;
            if (role == Qt::ToolTipRole)
                return tr("Breakpoint will only be hit if this condition is met.");
            break;
        case 5:
            if (role == Qt::DisplayRole)
                return data->pending ? data->ignoreCount : data->bpIgnoreCount;
            if (role == Qt::ToolTipRole)
                return tr("Breakpoint will only be hit after being ignored so many times.");
            break;
    }
    if (role == Qt::ToolTipRole)
        return data->toToolTip();
    return QVariant();
}

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Qt::ItemFlags BreakHandler::flags(const QModelIndex &mi) const
{
    switch (mi.column()) {
        //case 0:
        //    return Qt::ItemIsUserCheckable | Qt::ItemIsEnabled;
        default:
            return  QAbstractItemModel::flags(mi);
    }
}

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bool BreakHandler::setData(const QModelIndex &mi, const QVariant &value, int role)
{
    if (role != Qt::EditRole)
        return false;

    BreakpointData *data = at(mi.row());
    switch (mi.column()) {
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        case 0: {
            if (data->enabled != value.toBool()) {
                toggleBreakpointEnabled(data);
                dataChanged(mi, mi);
            }
            return true;
        }
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        case 2: {
            if (data->useFullPath != value.toBool()) {
                data->useFullPath = value.toBool();
                dataChanged(mi, mi);
            }
            return true;
        }
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        case 4: {
            QString val = value.toString();
            if (val != data->condition) {
                data->condition = val;
                dataChanged(mi, mi);
            }
            return true;
        }
        case 5: {
            QString val = value.toString();
            if (val != data->ignoreCount) {
                data->ignoreCount = val;
                dataChanged(mi, mi);
            }
            return true;
        }
        default: { 
            return false;
        }
    }
}

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void BreakHandler::append(BreakpointData *data)
{
    m_bp.append(data);
    m_inserted.append(data);
}

QList<BreakpointData *> BreakHandler::insertedBreakpoints() const
{
    return m_inserted;
}

void BreakHandler::takeInsertedBreakPoint(BreakpointData *d)
{
    m_inserted.removeAll(d);
}

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QList<BreakpointData *> BreakHandler::takeRemovedBreakpoints()
{
    QList<BreakpointData *> result = m_removed;
    m_removed.clear();
    return result;
}

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QList<BreakpointData *> BreakHandler::takeEnabledBreakpoints()
{
    QList<BreakpointData *> result = m_enabled;
    m_enabled.clear();
    return result;
}

QList<BreakpointData *> BreakHandler::takeDisabledBreakpoints()
{
    QList<BreakpointData *> result = m_disabled;
    m_disabled.clear();
    return result;
}

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void BreakHandler::removeBreakpointHelper(int index)
{
    BreakpointData *data = m_bp.at(index);
    m_bp.removeAt(index);
    data->removeMarker();
    m_removed.append(data);
}

void BreakHandler::removeBreakpoint(int index)
{
    if (index < 0 || index >= size())
        return;
    BreakHandler::removeBreakpointHelper(index);
    emit layoutChanged();
    saveBreakpoints();
}

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void BreakHandler::toggleBreakpointEnabled(BreakpointData *data)
{
    QTC_ASSERT(data, return);
    data->enabled = !data->enabled;
    if (data->enabled) {
        m_enabled.append(data);
        m_disabled.removeAll(data);
    } else {
        m_enabled.removeAll(data);
        m_disabled.append(data);
    }
    saveBreakpoints();
    updateMarkers();
}
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void BreakHandler::toggleBreakpointEnabled(const QString &fileName, int lineNumber)
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{
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    toggleBreakpointEnabled(at(findBreakpoint(fileName, lineNumber)));
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}

void BreakHandler::setBreakpoint(const QString &fileName, int lineNumber)
{
    QFileInfo fi(fileName);

    BreakpointData *data = new BreakpointData(this);
    data->fileName = fileName;
    data->lineNumber = QString::number(lineNumber);
    data->pending = true;
    data->markerFileName = fileName;
    data->markerLineNumber = lineNumber;
    append(data);
    emit layoutChanged();
    saveBreakpoints();
    updateMarkers();
}

void BreakHandler::removeAllBreakpoints()
{
    for (int index = size(); --index >= 0;)
        removeBreakpointHelper(index);
    emit layoutChanged();
    saveBreakpoints();
    updateMarkers();
}

void BreakHandler::setAllPending()
{
    loadBreakpoints();
    for (int index = size(); --index >= 0;)
        at(index)->pending = true;
    saveBreakpoints();
    updateMarkers();
}

void BreakHandler::saveSessionData()
{
    saveBreakpoints();
    updateMarkers();
}

void BreakHandler::loadSessionData()
{
    //resetBreakpoints();
    loadBreakpoints();
    updateMarkers();
}

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void BreakHandler::activateBreakpoint(int index)
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{
    const BreakpointData *data = at(index);
    //qDebug() << "BREAKPOINT ACTIVATED: " << data->fileName;
    if (!data->markerFileName.isEmpty())
        emit gotoLocation(data->markerFileName, data->markerLineNumber, false);
}

void BreakHandler::breakByFunction(const QString &functionName)
{
    // One per function is enough for now
    for (int index = size(); --index >= 0;) {
        const BreakpointData *data = at(index);
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        QTC_ASSERT(data, break);
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        if (data->funcName == functionName && data->condition.isEmpty()
                && data->ignoreCount.isEmpty())
            return;
    }
    BreakpointData *data = new BreakpointData(this);
    data->funcName = functionName;
    append(data);
    saveBreakpoints();
    updateMarkers();
}

#include "breakhandler.moc"