// Copyright (C) 2016 The Qt Company Ltd.
// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR GPL-3.0-only WITH Qt-GPL-exception-1.0

#include "breakhandler.h"

#include "debuggeractions.h"
#include "debuggercore.h"
#include "debuggerengine.h"
#include "debuggericons.h"
#include "debuggerinternalconstants.h"
#include "debuggertr.h"
#include "disassembleragent.h"
#include "enginemanager.h"
#include "simplifytype.h"

#include <coreplugin/coreconstants.h>
#include <coreplugin/editormanager/editormanager.h>
#include <coreplugin/icore.h>
#include <coreplugin/idocument.h>
#include <coreplugin/session.h>

#include <projectexplorer/project.h>
#include <projectexplorer/projectexplorericons.h>
#include <projectexplorer/projecttree.h>

#include <texteditor/textmark.h>
#include <texteditor/texteditor.h>

#include <utils/algorithm.h>
#include <utils/basetreeview.h>
#include <utils/checkablemessagebox.h>
#include <utils/fileutils.h>
#include <utils/hostosinfo.h>
#include <utils/pathchooser.h>
#include <utils/qtcassert.h>
#include <utils/theme/theme.h>

#if USE_BREAK_MODEL_TEST
#include <modeltest.h>
#endif

#include <QApplication>
#include <QCheckBox>
#include <QComboBox>
#include <QDebug>
#include <QDialogButtonBox>
#include <QDir>
#include <QFormLayout>
#include <QGroupBox>
#include <QMenu>
#include <QSpinBox>
#include <QStyledItemDelegate>
#include <QTimer>
#include <QTimerEvent>

using namespace Core;
using namespace ProjectExplorer;
using namespace Utils;

namespace Debugger {
namespace Internal {

static BreakpointManager *theBreakpointManager = nullptr;

//
// BreakpointMarker
//

// The red blob on the left side in the cpp editor.
class BreakpointMarker : public TextEditor::TextMark
{
public:
    BreakpointMarker(const Breakpoint &bp, const FilePath &fileName, int lineNumber)
        : TextMark(fileName,
                   lineNumber,
                   {Tr::tr("Breakpoint"), Constants::TEXT_MARK_CATEGORY_BREAKPOINT})
        , m_bp(bp)
    {
        setColor(Theme::Debugger_Breakpoint_TextMarkColor);
        setDefaultToolTip(Tr::tr("Breakpoint"));
        setPriority(TextEditor::TextMark::NormalPriority);
        setIconProvider([bp] { return bp->icon(); });
        setToolTipProvider([bp] { return bp->toolTip(); });
    }

    void updateLineNumber(int lineNumber) final
    {
        TextMark::updateLineNumber(lineNumber);
        QTC_ASSERT(m_bp, return);
        m_bp->setTextPosition({lineNumber, -1});
        if (GlobalBreakpoint gbp = m_bp->globalBreakpoint())
            gbp->m_params.textPosition.line = lineNumber;
    }

    void updateFilePath(const FilePath &fileName) final
    {
        TextMark::updateFilePath(fileName);
        QTC_ASSERT(m_bp, return);
        m_bp->setFileName(fileName);
        if (GlobalBreakpoint gbp = m_bp->globalBreakpoint())
            gbp->m_params.fileName = fileName;
    }

    bool isDraggable() const final { return true; }

    void dragToLine(int line) final
    {
        QTC_ASSERT(m_bp, return);
        GlobalBreakpoint gbp = m_bp->globalBreakpoint();
        if (!gbp)
            return;
        BreakpointParameters params = gbp->m_params;
        params.textPosition.line = line;
        gbp->deleteBreakpoint();
        BreakpointManager::createBreakpoint(params);
    }

    bool isClickable() const final { return true; }

    void clicked() final
    {
        QTC_ASSERT(m_bp, return);

        if (m_bp->isEnabled()) {
            m_bp->deleteGlobalOrThisBreakpoint();
            return;
        }

        if (const GlobalBreakpoint gbp = m_bp->globalBreakpoint())
            gbp->setEnabled(true);
    }

public:
    Breakpoint m_bp;
};

// The red blob on the left side in the cpp editor.
class GlobalBreakpointMarker : public TextEditor::TextMark
{
public:
    GlobalBreakpointMarker(GlobalBreakpoint gbp, const FilePath &fileName, int lineNumber)
        : TextMark(fileName,
                   lineNumber,
                   {Tr::tr("Breakpoint"), Constants::TEXT_MARK_CATEGORY_BREAKPOINT})
        , m_gbp(gbp)
    {
        setDefaultToolTip(Tr::tr("Breakpoint"));
        setPriority(TextEditor::TextMark::NormalPriority);
        setIconProvider([this] { return m_gbp->icon(); });
        setToolTipProvider([this] { return m_gbp->toolTip(); });
    }

    void removedFromEditor() final
    {
        QTC_ASSERT(m_gbp, return);
        m_gbp->removeBreakpointFromModel();
    }

    void updateLineNumber(int lineNumber) final
    {
        TextMark::updateLineNumber(lineNumber);
        QTC_ASSERT(m_gbp, return);

        // Ignore updates to the "real" line number while the debugger is
        // running, as this can be triggered by moving the breakpoint to
        // the next line that generated code.

        m_gbp->updateLineNumber(lineNumber);
    }

    void updateFilePath(const FilePath &fileName) final
    {
        TextMark::updateFilePath(fileName);
        QTC_ASSERT(m_gbp, return);
        m_gbp->updateFileName(fileName);
    }

    bool isDraggable() const final { return true; }

    void dragToLine(int line) final
    {
        TextMark::move(line);
        QTC_ASSERT(m_gbp, return);
        QTC_ASSERT(BreakpointManager::globalBreakpoints().contains(m_gbp), return);
        m_gbp->updateLineNumber(line);
    }

    bool isClickable() const final { return true; }

    void clicked() final
    {
        QTC_ASSERT(m_gbp, return);
        if (!m_gbp->isEnabled())
            m_gbp->setEnabled(true);
        else
            m_gbp->removeBreakpointFromModel();
    }

public:
    GlobalBreakpoint m_gbp;
};

static QString stateToString(BreakpointState state)
{
    switch (state) {
        case BreakpointNew:
            return Tr::tr("New");
        case BreakpointInsertionRequested:
            return Tr::tr("Insertion requested");
        case BreakpointInsertionProceeding:
            return Tr::tr("Insertion proceeding");
        case BreakpointUpdateRequested:
            return Tr::tr("Change requested");
        case BreakpointUpdateProceeding:
            return Tr::tr("Change proceeding");
        case BreakpointInserted:
            return Tr::tr("Breakpoint inserted");
        case BreakpointRemoveRequested:
            return Tr::tr("Removal requested");
        case BreakpointRemoveProceeding:
            return Tr::tr("Removal proceeding");
        case BreakpointDead:
            return Tr::tr("Dead");
        default:
            break;
    }
    //: Invalid breakpoint state.
    return Tr::tr("<invalid state>");
}

static QString msgBreakpointAtSpecialFunc(const QString &func)
{
    return Tr::tr("Breakpoint at \"%1\"").arg(func);
}

static QString typeToString(BreakpointType type)
{
    switch (type) {
        case BreakpointByFileAndLine:
            return Tr::tr("Breakpoint by File and Line");
        case BreakpointByFunction:
            return Tr::tr("Breakpoint by Function");
        case BreakpointByAddress:
            return Tr::tr("Breakpoint by Address");
        case BreakpointAtThrow:
            return msgBreakpointAtSpecialFunc("throw");
        case BreakpointAtCatch:
            return msgBreakpointAtSpecialFunc("catch");
        case BreakpointAtFork:
            return msgBreakpointAtSpecialFunc("fork");
        case BreakpointAtExec:
            return msgBreakpointAtSpecialFunc("exec");
        //case BreakpointAtVFork:
        //    return msgBreakpointAtSpecialFunc("vfork");
        case BreakpointAtSysCall:
            return msgBreakpointAtSpecialFunc("syscall");
        case BreakpointAtMain:
            return Tr::tr("Breakpoint at Function \"main()\"");
        case WatchpointAtAddress:
            return Tr::tr("Watchpoint at Address");
        case WatchpointAtExpression:
            return Tr::tr("Watchpoint at Expression");
        case BreakpointOnQmlSignalEmit:
            return Tr::tr("Breakpoint on QML Signal Emit");
        case BreakpointAtJavaScriptThrow:
            return Tr::tr("Breakpoint at JavaScript throw");
        case UnknownBreakpointType:
        case LastBreakpointType:
            break;
    }
    return Tr::tr("Unknown Breakpoint Type");
}

class LeftElideDelegate : public QStyledItemDelegate
{
public:
    LeftElideDelegate() = default;

    void paint(QPainter *pain, const QStyleOptionViewItem &option, const QModelIndex &index) const override
    {
        QStyleOptionViewItem opt = option;
        opt.textElideMode = Qt::ElideLeft;
        QStyledItemDelegate::paint(pain, opt, index);
    }
};

class SmallTextEdit : public QTextEdit
{
public:
    explicit SmallTextEdit(QWidget *parent) : QTextEdit(parent) {}
    QSize sizeHint() const override { return QSize(QTextEdit::sizeHint().width(), 100); }
    QSize minimumSizeHint() const override { return sizeHint(); }
};

///////////////////////////////////////////////////////////////////////
//
// BreakpointDialog: Show a dialog for editing breakpoints. Shows controls
// for the file-and-line, function and address parameters depending on the
// breakpoint type. The controls not applicable to the current type
// (say function name for file-and-line) are disabled and cleared out.
// However,the values are saved and restored once the respective mode
// is again chosen, which is done using m_savedParameters and
// setters/getters taking the parts mask enumeration parameter.
//
///////////////////////////////////////////////////////////////////////

class BreakpointDialog : public QDialog
{
public:
    explicit BreakpointDialog(unsigned int enabledParts, QWidget *parent = nullptr);
    bool showDialog(BreakpointParameters *data, BreakpointParts *parts);

    void setParameters(const BreakpointParameters &data);
    BreakpointParameters parameters() const;

    void typeChanged(int index);

private:
    void setPartsEnabled(unsigned partsMask);
    void clearOtherParts(unsigned partsMask);
    void getParts(unsigned partsMask, BreakpointParameters *data) const;
    void setParts(unsigned partsMask, const BreakpointParameters &data);

    void setType(BreakpointType type);
    BreakpointType type() const;

    unsigned m_enabledParts;
    BreakpointParameters m_savedParameters;
    BreakpointType m_previousType;
    bool m_firstTypeChange;

    QLabel *m_labelType;
    QComboBox *m_comboBoxType;
    QLabel *m_labelFileName;
    Utils::PathChooser *m_pathChooserFileName;
    QLabel *m_labelLineNumber;
    QLineEdit *m_lineEditLineNumber;
    QCheckBox *m_checkBoxPropagate;
    QLabel *m_labelEnabled;
    QCheckBox *m_checkBoxEnabled;
    QLabel *m_labelAddress;
    QLineEdit *m_lineEditAddress;
    QLabel *m_labelExpression;
    QLineEdit *m_lineEditExpression;
    QLabel *m_labelFunction;
    QLineEdit *m_lineEditFunction;
    QLabel *m_labelTracepoint;
    QCheckBox *m_checkBoxTracepoint;
    QLabel *m_labelOneShot;
    QCheckBox *m_checkBoxOneShot;
    QLabel *m_labelUseFullPath;
    QLabel *m_labelModule;
    QLineEdit *m_lineEditModule;
    QLabel *m_labelCommands;
    QTextEdit *m_textEditCommands;
    QComboBox *m_comboBoxPathUsage;
    QLabel *m_labelMessage;
    QLineEdit *m_lineEditMessage;
    QLabel *m_labelCondition;
    QLineEdit *m_lineEditCondition;
    QLabel *m_labelIgnoreCount;
    QSpinBox *m_spinBoxIgnoreCount;
    QLabel *m_labelThreadSpec;
    QLineEdit *m_lineEditThreadSpec;
    QDialogButtonBox *m_buttonBox;
};

BreakpointDialog::BreakpointDialog(unsigned int enabledParts, QWidget *parent)
    : QDialog(parent), m_enabledParts(enabledParts), m_previousType(UnknownBreakpointType),
      m_firstTypeChange(true)
{
    setWindowTitle(Tr::tr("Edit Breakpoint Properties"));

    auto groupBoxBasic = new QGroupBox(Tr::tr("Basic"), this);

    // Match BreakpointType (omitting unknown type).
    const QStringList types = {
        Tr::tr("File Name and Line Number"),
        Tr::tr("Function Name"),
        Tr::tr("Break on Memory Address"),
        Tr::tr("Break When C++ Exception Is Thrown"),
        Tr::tr("Break When C++ Exception Is Caught"),
        Tr::tr("Break When Function \"main\" Starts"),
        Tr::tr("Break When a New Process Is Forked"),
        Tr::tr("Break When a New Process Is Executed"),
        Tr::tr("Break When a System Call Is Executed"),
        Tr::tr("Break on Data Access at Fixed Address"),
        Tr::tr("Break on Data Access at Address Given by Expression"),
        Tr::tr("Break on QML Signal Emit"),
        Tr::tr("Break When JavaScript Exception Is Thrown")
    };
    // We don't list UnknownBreakpointType, so 1 less:
    QTC_CHECK(types.size() + 1 == LastBreakpointType);
    m_comboBoxType = new QComboBox(groupBoxBasic);
    m_comboBoxType->setMaxVisibleItems(20);
    m_comboBoxType->addItems(types);
    m_labelType = new QLabel(Tr::tr("Breakpoint &type:"), groupBoxBasic);
    m_labelType->setBuddy(m_comboBoxType);

    m_pathChooserFileName = new PathChooser(groupBoxBasic);
    m_pathChooserFileName->setHistoryCompleter("Debugger.Breakpoint.File.History");
    m_pathChooserFileName->setExpectedKind(PathChooser::File);
    m_labelFileName = new QLabel(Tr::tr("&File name:"), groupBoxBasic);
    m_labelFileName->setBuddy(m_pathChooserFileName);

    m_lineEditLineNumber = new QLineEdit(groupBoxBasic);
    m_labelLineNumber = new QLabel(Tr::tr("&Line number:"), groupBoxBasic);
    m_labelLineNumber->setBuddy(m_lineEditLineNumber);

    m_checkBoxEnabled = new QCheckBox(groupBoxBasic);
    m_labelEnabled = new QLabel(Tr::tr("&Enabled:"), groupBoxBasic);
    m_labelEnabled->setBuddy(m_checkBoxEnabled);

    m_lineEditAddress = new QLineEdit(groupBoxBasic);
    m_labelAddress = new QLabel(Tr::tr("&Address:"), groupBoxBasic);
    m_labelAddress->setBuddy(m_lineEditAddress);

    m_lineEditExpression = new QLineEdit(groupBoxBasic);
    m_labelExpression = new QLabel(Tr::tr("&Expression:"), groupBoxBasic);
    m_labelExpression->setBuddy(m_lineEditExpression);

    m_lineEditFunction = new QLineEdit(groupBoxBasic);
    m_labelFunction = new QLabel(Tr::tr("Fun&ction:"), groupBoxBasic);
    m_labelFunction->setBuddy(m_lineEditFunction);

    auto groupBoxAdvanced = new QGroupBox(Tr::tr("Advanced"), this);

    m_checkBoxTracepoint = new QCheckBox(groupBoxAdvanced);
    m_labelTracepoint = new QLabel(Tr::tr("T&racepoint only:"), groupBoxAdvanced);
    m_labelTracepoint->setBuddy(m_checkBoxTracepoint);

    m_checkBoxOneShot = new QCheckBox(groupBoxAdvanced);
    m_labelOneShot = new QLabel(Tr::tr("&One shot only:"), groupBoxAdvanced);
    m_labelOneShot->setBuddy(m_checkBoxOneShot);

    const QString pathToolTip =
        Tr::tr("<p>Determines how the path is specified "
                    "when setting breakpoints:</p><ul>"
               "<li><i>Use Engine Default</i>: Preferred setting of the "
                    "debugger engine.</li>"
               "<li><i>Use Full Path</i>: Pass full path, avoiding ambiguities "
                    "should files of the same name exist in several modules. "
                    "This is the engine default for CDB and LLDB.</li>"
               "<li><i>Use File Name</i>: Pass the file name only. This is "
                    "useful when using a source tree whose location does "
                    "not match the one used when building the modules. "
                    "It is the engine default for GDB as using full paths can "
                    "be slow with this engine.</li></ul>");
    m_comboBoxPathUsage = new QComboBox(groupBoxAdvanced);
    m_comboBoxPathUsage->addItem(Tr::tr("Use Engine Default"));
    m_comboBoxPathUsage->addItem(Tr::tr("Use Full Path"));
    m_comboBoxPathUsage->addItem(Tr::tr("Use File Name"));
    m_comboBoxPathUsage->setToolTip(pathToolTip);
    m_labelUseFullPath = new QLabel(Tr::tr("Pat&h:"), groupBoxAdvanced);
    m_labelUseFullPath->setBuddy(m_comboBoxPathUsage);
    m_labelUseFullPath->setToolTip(pathToolTip);

    const QString moduleToolTip =
            "<p>" + Tr::tr("Specifying the module (base name of the library or executable) "
                       "for function or file type breakpoints can significantly speed up "
                       "debugger startup times (CDB, LLDB).") + "</p>";
    m_lineEditModule = new QLineEdit(groupBoxAdvanced);
    m_lineEditModule->setToolTip(moduleToolTip);
    m_labelModule = new QLabel(Tr::tr("&Module:"), groupBoxAdvanced);
    m_labelModule->setBuddy(m_lineEditModule);
    m_labelModule->setToolTip(moduleToolTip);

    const QString commandsToolTip =
            "<p>" + Tr::tr("Debugger commands to be executed when the breakpoint is hit. "
                       "This feature is only available for GDB.") + "</p>";
    m_textEditCommands = new SmallTextEdit(groupBoxAdvanced);
    m_textEditCommands->setToolTip(commandsToolTip);
    m_labelCommands = new QLabel(Tr::tr("&Commands:"), groupBoxAdvanced);
    m_labelCommands->setBuddy(m_textEditCommands);
    m_labelCommands->setToolTip(commandsToolTip);

    m_lineEditMessage = new QLineEdit(groupBoxAdvanced);
    m_labelMessage = new QLabel(Tr::tr("&Message:"), groupBoxAdvanced);
    m_labelMessage->setBuddy(m_lineEditMessage);

    m_lineEditCondition = new QLineEdit(groupBoxAdvanced);
    m_labelCondition = new QLabel(Tr::tr("C&ondition:"), groupBoxAdvanced);
    m_labelCondition->setBuddy(m_lineEditCondition);

    m_spinBoxIgnoreCount = new QSpinBox(groupBoxAdvanced);
    m_spinBoxIgnoreCount->setMinimum(0);
    m_spinBoxIgnoreCount->setMaximum(2147483647);
    m_labelIgnoreCount = new QLabel(Tr::tr("&Ignore count:"), groupBoxAdvanced);
    m_labelIgnoreCount->setBuddy(m_spinBoxIgnoreCount);

    m_lineEditThreadSpec = new QLineEdit(groupBoxAdvanced);
    m_labelThreadSpec = new QLabel(Tr::tr("&Thread specification:"), groupBoxAdvanced);
    m_labelThreadSpec->setBuddy(m_lineEditThreadSpec);

    m_checkBoxPropagate = new QCheckBox(Tr::tr("Propagate Change to Preset Breakpoint"), this);
    m_checkBoxPropagate->setCheckable(true);
    m_checkBoxPropagate->setChecked(true);
    m_checkBoxPropagate->setVisible(false); // FIXME: Make it work.

    m_buttonBox = new QDialogButtonBox(this);
    m_buttonBox->setStandardButtons(QDialogButtonBox::Cancel|QDialogButtonBox::Ok);

    auto basicLayout = new QFormLayout(groupBoxBasic);
    basicLayout->addRow(m_labelType, m_comboBoxType);
    basicLayout->addRow(m_labelFileName, m_pathChooserFileName);
    basicLayout->addRow(m_labelLineNumber, m_lineEditLineNumber);
    basicLayout->addRow(m_labelEnabled, m_checkBoxEnabled);
    basicLayout->addRow(m_labelAddress, m_lineEditAddress);
    basicLayout->addRow(m_labelExpression, m_lineEditExpression);
    basicLayout->addRow(m_labelFunction, m_lineEditFunction);
    basicLayout->addRow(m_labelOneShot, m_checkBoxOneShot);

    auto advancedLeftLayout = new QFormLayout();
    advancedLeftLayout->setFieldGrowthPolicy(QFormLayout::AllNonFixedFieldsGrow);
    advancedLeftLayout->addRow(m_labelCondition, m_lineEditCondition);
    advancedLeftLayout->addRow(m_labelIgnoreCount, m_spinBoxIgnoreCount);
    advancedLeftLayout->addRow(m_labelThreadSpec, m_lineEditThreadSpec);
    advancedLeftLayout->addRow(m_labelUseFullPath, m_comboBoxPathUsage);
    advancedLeftLayout->addRow(m_labelModule, m_lineEditModule);

    auto advancedRightLayout = new QFormLayout();
    advancedRightLayout->setFieldGrowthPolicy(QFormLayout::ExpandingFieldsGrow);
    advancedRightLayout->addRow(m_labelCommands, m_textEditCommands);
    advancedRightLayout->addRow(m_labelTracepoint, m_checkBoxTracepoint);
    advancedRightLayout->addRow(m_labelMessage, m_lineEditMessage);

    auto horizontalLayout = new QHBoxLayout(groupBoxAdvanced);
    horizontalLayout->addLayout(advancedLeftLayout);
    horizontalLayout->addSpacing(15);
    horizontalLayout->addLayout(advancedRightLayout);

    auto verticalLayout = new QVBoxLayout(this);
    verticalLayout->addWidget(groupBoxBasic);
    verticalLayout->addSpacing(10);
    verticalLayout->addWidget(groupBoxAdvanced);
    verticalLayout->addSpacing(10);
    verticalLayout->addWidget(m_checkBoxPropagate);
    verticalLayout->addSpacing(10);
    verticalLayout->addWidget(m_buttonBox);
    verticalLayout->setStretchFactor(groupBoxAdvanced, 10);

    connect(m_comboBoxType, &QComboBox::activated, this, &BreakpointDialog::typeChanged);
    connect(m_buttonBox, &QDialogButtonBox::accepted, this, &QDialog::accept);
    connect(m_buttonBox, &QDialogButtonBox::rejected, this, &QDialog::reject);
}

void BreakpointDialog::setType(BreakpointType type)
{
    const int comboIndex = type - 1; // Skip UnknownType.
    if (comboIndex != m_comboBoxType->currentIndex() || m_firstTypeChange) {
        m_comboBoxType->setCurrentIndex(comboIndex);
        typeChanged(comboIndex);
        m_firstTypeChange = false;
    }
}

BreakpointType BreakpointDialog::type() const
{
    const int type = m_comboBoxType->currentIndex() + 1; // Skip unknown type.
    return static_cast<BreakpointType>(type);
}

void BreakpointDialog::setParameters(const BreakpointParameters &data)
{
    m_savedParameters = data;
    setType(data.type);
    setParts(AllParts, data);
}

BreakpointParameters BreakpointDialog::parameters() const
{
    BreakpointParameters data(type());
    getParts(AllParts, &data);
    return data;
}

void BreakpointDialog::setPartsEnabled(unsigned partsMask)
{
    partsMask &= m_enabledParts;
    m_labelFileName->setEnabled(partsMask & FileAndLinePart);
    m_pathChooserFileName->setEnabled(partsMask & FileAndLinePart);
    m_labelLineNumber->setEnabled(partsMask & FileAndLinePart);
    m_lineEditLineNumber->setEnabled(partsMask & FileAndLinePart);
    m_labelUseFullPath->setEnabled(partsMask & FileAndLinePart);
    m_comboBoxPathUsage->setEnabled(partsMask & FileAndLinePart);

    m_labelFunction->setEnabled(partsMask & FunctionPart);
    m_lineEditFunction->setEnabled(partsMask & FunctionPart);

    m_labelOneShot->setEnabled(partsMask & OneShotPart);
    m_checkBoxOneShot->setEnabled(partsMask & OneShotPart);

    m_labelAddress->setEnabled(partsMask & AddressPart);
    m_lineEditAddress->setEnabled(partsMask & AddressPart);
    m_labelExpression->setEnabled(partsMask & ExpressionPart);
    m_lineEditExpression->setEnabled(partsMask & ExpressionPart);

    m_labelCondition->setEnabled(partsMask & ConditionPart);
    m_lineEditCondition->setEnabled(partsMask & ConditionPart);
    m_labelIgnoreCount->setEnabled(partsMask & IgnoreCountPart);
    m_spinBoxIgnoreCount->setEnabled(partsMask & IgnoreCountPart);
    m_labelThreadSpec->setEnabled(partsMask & ThreadSpecPart);
    m_lineEditThreadSpec->setEnabled(partsMask & ThreadSpecPart);

    m_labelModule->setEnabled(partsMask & ModulePart);
    m_lineEditModule->setEnabled(partsMask & ModulePart);

    m_labelTracepoint->setEnabled(partsMask & TracePointPart);
    m_checkBoxTracepoint->setEnabled(partsMask & TracePointPart);

    m_labelCommands->setEnabled(partsMask & CommandPart);
    m_textEditCommands->setEnabled(partsMask & CommandPart);

    m_labelMessage->setEnabled(partsMask & TracePointPart);
    m_lineEditMessage->setEnabled(partsMask & TracePointPart);
}

void BreakpointDialog::clearOtherParts(unsigned partsMask)
{
    const unsigned invertedPartsMask = ~partsMask;
    if (invertedPartsMask & FileAndLinePart) {
        m_pathChooserFileName->setFilePath({});
        m_lineEditLineNumber->clear();
        m_comboBoxPathUsage->setCurrentIndex(BreakpointPathUsageEngineDefault);
    }

    if (invertedPartsMask & FunctionPart)
        m_lineEditFunction->clear();

    if (invertedPartsMask & AddressPart)
        m_lineEditAddress->clear();
    if (invertedPartsMask & ExpressionPart)
        m_lineEditExpression->clear();

    if (invertedPartsMask & ConditionPart)
        m_lineEditCondition->clear();
    if (invertedPartsMask & IgnoreCountPart)
        m_spinBoxIgnoreCount->clear();
    if (invertedPartsMask & ThreadSpecPart)
        m_lineEditThreadSpec->clear();
    if (invertedPartsMask & ModulePart)
        m_lineEditModule->clear();

    if (partsMask & OneShotPart)
        m_checkBoxOneShot->setChecked(false);
    if (invertedPartsMask & CommandPart)
        m_textEditCommands->clear();
    if (invertedPartsMask & TracePointPart) {
        m_checkBoxTracepoint->setChecked(false);
        m_lineEditMessage->clear();
    }
}

void BreakpointDialog::getParts(unsigned partsMask, BreakpointParameters *data) const
{
    data->enabled = m_checkBoxEnabled->isChecked();

    if (partsMask & FileAndLinePart) {
        data->textPosition.line = m_lineEditLineNumber->text().toInt();
        data->pathUsage = static_cast<BreakpointPathUsage>(m_comboBoxPathUsage->currentIndex());
        data->fileName = m_pathChooserFileName->filePath();
    }
    if (partsMask & FunctionPart)
        data->functionName = m_lineEditFunction->text();

    if (partsMask & AddressPart)
        data->address = m_lineEditAddress->text().toULongLong(nullptr, 0);
    if (partsMask & ExpressionPart)
        data->expression = m_lineEditExpression->text();

    if (partsMask & ConditionPart)
        data->condition = m_lineEditCondition->text();
    if (partsMask & IgnoreCountPart)
        data->ignoreCount = m_spinBoxIgnoreCount->text().toInt();
    if (partsMask & ThreadSpecPart)
        data->threadSpec =
            BreakHandler::threadSpecFromDisplay(m_lineEditThreadSpec->text());
    if (partsMask & ModulePart)
        data->module = m_lineEditModule->text();

    if (partsMask & OneShotPart)
        data->oneShot = m_checkBoxOneShot->isChecked();
    if (partsMask & CommandPart)
        data->command = m_textEditCommands->toPlainText().trimmed();
    if (partsMask & TracePointPart) {
        data->tracepoint = m_checkBoxTracepoint->isChecked();
        data->message = m_lineEditMessage->text();
    }
}

void BreakpointDialog::setParts(unsigned mask, const BreakpointParameters &data)
{
    m_checkBoxEnabled->setChecked(data.enabled);
    m_comboBoxPathUsage->setCurrentIndex(data.pathUsage);
    m_lineEditMessage->setText(data.message);

    if (mask & FileAndLinePart) {
        m_pathChooserFileName->setFilePath(data.fileName);
        m_lineEditLineNumber->setText(QString::number(data.textPosition.line));
    }

    if (mask & FunctionPart)
        m_lineEditFunction->setText(data.functionName);

    if (mask & AddressPart) {
        if (data.address) {
            m_lineEditAddress->setText(QString("0x%1").arg(data.address, 0, 16));
        } else {
            m_lineEditAddress->clear();
        }
    }

    if (mask & ExpressionPart) {
        if (!data.expression.isEmpty())
            m_lineEditExpression->setText(data.expression);
        else
            m_lineEditExpression->clear();
    }

    if (mask & ConditionPart)
        m_lineEditCondition->setText(data.condition);
    if (mask & IgnoreCountPart)
        m_spinBoxIgnoreCount->setValue(data.ignoreCount);
    if (mask & ThreadSpecPart)
        m_lineEditThreadSpec->
            setText(BreakHandler::displayFromThreadSpec(data.threadSpec));
    if (mask & ModulePart)
        m_lineEditModule->setText(data.module);

    if (mask & OneShotPart)
        m_checkBoxOneShot->setChecked(data.oneShot);
    if (mask & TracePointPart)
        m_checkBoxTracepoint->setChecked(data.tracepoint);
    if (mask & CommandPart)
        m_textEditCommands->setPlainText(data.command);
}

void BreakpointDialog::typeChanged(int)
{
    BreakpointType previousType = m_previousType;
    const BreakpointType newType = type();
    m_previousType = newType;
    // Save current state.
    switch (previousType) {
    case UnknownBreakpointType:
    case LastBreakpointType:
        break;
    case BreakpointByFileAndLine:
        getParts(FileAndLinePart|ModulePart|AllConditionParts|TracePointPart|CommandPart, &m_savedParameters);
        break;
    case BreakpointByFunction:
        getParts(FunctionPart|ModulePart|AllConditionParts|TracePointPart|CommandPart, &m_savedParameters);
        break;
    case BreakpointAtThrow:
    case BreakpointAtCatch:
    case BreakpointAtMain:
    case BreakpointAtFork:
    case BreakpointAtExec:
    //case BreakpointAtVFork:
    case BreakpointAtSysCall:
    case BreakpointAtJavaScriptThrow:
        break;
    case BreakpointByAddress:
    case WatchpointAtAddress:
        getParts(AddressPart|AllConditionParts|TracePointPart|CommandPart, &m_savedParameters);
        break;
    case WatchpointAtExpression:
        getParts(ExpressionPart|AllConditionParts|TracePointPart|CommandPart, &m_savedParameters);
        break;
    case BreakpointOnQmlSignalEmit:
        getParts(FunctionPart, &m_savedParameters);
    }

    // Enable and set up new state from saved values.
    switch (newType) {
    case UnknownBreakpointType:
    case LastBreakpointType:
        break;
    case BreakpointByFileAndLine:
        setParts(FileAndLinePart|AllConditionParts|ModulePart|TracePointPart|CommandPart, m_savedParameters);
        setPartsEnabled(FileAndLinePart|AllConditionParts|ModulePart|TracePointPart|CommandPart);
        clearOtherParts(FileAndLinePart|AllConditionParts|ModulePart|TracePointPart|CommandPart);
        break;
    case BreakpointByFunction:
        setParts(FunctionPart|AllConditionParts|ModulePart|TracePointPart|CommandPart, m_savedParameters);
        setPartsEnabled(FunctionPart|AllConditionParts|ModulePart|TracePointPart|CommandPart);
        clearOtherParts(FunctionPart|AllConditionParts|ModulePart|TracePointPart|CommandPart);
        break;
    case BreakpointAtThrow:
    case BreakpointAtCatch:
    case BreakpointAtFork:
    case BreakpointAtExec:
    //case BreakpointAtVFork:
    case BreakpointAtSysCall:
        clearOtherParts(AllConditionParts|ModulePart|TracePointPart|CommandPart);
        setPartsEnabled(AllConditionParts|TracePointPart|CommandPart);
        break;
    case BreakpointAtJavaScriptThrow:
        clearOtherParts(AllParts);
        setPartsEnabled(0);
        break;
    case BreakpointAtMain:
        m_lineEditFunction->setText("main"); // Just for display
        clearOtherParts(0);
        setPartsEnabled(0);
        break;
    case BreakpointByAddress:
    case WatchpointAtAddress:
        setParts(AddressPart|AllConditionParts|TracePointPart|CommandPart, m_savedParameters);
        setPartsEnabled(AddressPart|AllConditionParts|TracePointPart|CommandPart);
        clearOtherParts(AddressPart|AllConditionParts|TracePointPart|CommandPart);
        break;
    case WatchpointAtExpression:
        setParts(ExpressionPart|AllConditionParts|TracePointPart|CommandPart, m_savedParameters);
        setPartsEnabled(ExpressionPart|AllConditionParts|TracePointPart|CommandPart);
        clearOtherParts(ExpressionPart|AllConditionParts|TracePointPart|CommandPart);
        break;
    case BreakpointOnQmlSignalEmit:
        setParts(FunctionPart, m_savedParameters);
        setPartsEnabled(FunctionPart);
        clearOtherParts(FunctionPart);
    }
}

bool BreakpointDialog::showDialog(BreakpointParameters *data,
    BreakpointParts *parts)
{
    setParameters(*data);
    if (exec() != QDialog::Accepted)
        return false;

    // Check if changed.
    const BreakpointParameters newParameters = parameters();
    *parts = data->differencesTo(newParameters);
    if (!*parts)
        return false;

    *data = newParameters;
    return true;
}

// Dialog allowing changing properties of multiple breakpoints at a time.
class MultiBreakPointsDialog : public QDialog
{
public:
    MultiBreakPointsDialog(unsigned int enabledParts, QWidget *parent);

    QString condition() const { return m_lineEditCondition->text(); }
    int ignoreCount() const { return m_spinBoxIgnoreCount->value(); }
    int threadSpec() const
       { return BreakHandler::threadSpecFromDisplay(m_lineEditThreadSpec->text()); }

    void setCondition(const QString &c) { m_lineEditCondition->setText(c); }
    void setIgnoreCount(int i) { m_spinBoxIgnoreCount->setValue(i); }
    void setThreadSpec(int t)
        { return m_lineEditThreadSpec->setText(BreakHandler::displayFromThreadSpec(t)); }

private:
    QLineEdit *m_lineEditCondition;
    QSpinBox *m_spinBoxIgnoreCount;
    QLineEdit *m_lineEditThreadSpec;
    QDialogButtonBox *m_buttonBox;
};

MultiBreakPointsDialog::MultiBreakPointsDialog(unsigned int enabledParts, QWidget *parent) :
    QDialog(parent)
{
    setWindowTitle(Tr::tr("Edit Breakpoint Properties"));

    m_lineEditCondition = new QLineEdit(this);
    m_spinBoxIgnoreCount = new QSpinBox(this);
    m_spinBoxIgnoreCount->setMinimum(0);
    m_spinBoxIgnoreCount->setMaximum(2147483647);
    m_lineEditThreadSpec = new QLineEdit(this);

    m_buttonBox = new QDialogButtonBox(this);
    m_buttonBox->setStandardButtons(QDialogButtonBox::Cancel|QDialogButtonBox::Ok);

    auto formLayout = new QFormLayout;
    if (enabledParts & ConditionPart)
        formLayout->addRow(Tr::tr("&Condition:"), m_lineEditCondition);
    formLayout->addRow(Tr::tr("&Ignore count:"), m_spinBoxIgnoreCount);
    formLayout->addRow(Tr::tr("&Thread specification:"), m_lineEditThreadSpec);

    auto verticalLayout = new QVBoxLayout(this);
    verticalLayout->addLayout(formLayout);
    verticalLayout->addWidget(m_buttonBox);

    connect(m_buttonBox, &QDialogButtonBox::accepted, this, &QDialog::accept);
    connect(m_buttonBox, &QDialogButtonBox::rejected, this, &QDialog::reject);
}

BreakHandler::BreakHandler(DebuggerEngine *engine)
  : m_engine(engine)
{
#if USE_BREAK_MODEL_TEST
    new ModelTest(this, 0);
#endif
    setHeader(
        {//: Header for the breakpoint list: Consecutive Number of the breakpoint.
         Tr::tr("Number"),
         Tr::tr("Function"),
         Tr::tr("File"),
         Tr::tr("Line"),
         Tr::tr("Address"),
         Tr::tr("Condition"),
         Tr::tr("Ignore"),
         Tr::tr("Threads")});
}

bool BreakpointParameters::isLocatedAt(const FilePath &file, int line, const FilePath &markerFile) const
{
    return textPosition.line == line && (fileName == file || fileName == markerFile);
}

static bool isSimilarTo(const BreakpointParameters &params, const BreakpointParameters &needle)
{
    // Clear miss.
    if (needle.type != UnknownBreakpointType && params.type != UnknownBreakpointType
            && params.type != needle.type)
        return false;

    // Clear hit.
    if (params.address && params.address == needle.address)
        return true;

    // Clear hit.
    if (params == needle)
        return true;

    // At least at a position we were looking for.
    // FIXME: breaks multiple breakpoints at the same location
    if (!params.fileName.isEmpty()
            && params.fileName == needle.fileName
            && params.textPosition == needle.textPosition)
        return true;

    return false;
}

Breakpoint BreakHandler::findBreakpointByResponseId(const QString &id) const
{
    return findItemAtLevel<1>([id](const Breakpoint bp) {
        return bp && bp->responseId() == id;
    });
}

SubBreakpoint BreakHandler::findSubBreakpointByResponseId(const QString &id) const
{
    return findItemAtLevel<2>([id](const SubBreakpoint sub) {
        return sub && sub->responseId == id;
    });
}

QVariant BreakHandler::data(const QModelIndex &idx, int role) const
{
    if (role == BaseTreeView::ItemDelegateRole)
        return QVariant::fromValue(new LeftElideDelegate);

    return BreakHandlerModel::data(idx, role);
}

Breakpoint BreakHandler::findWatchpoint(const BreakpointParameters &params) const
{
    return findItemAtLevel<1>([params](const Breakpoint &bp) {
        return bp->m_parameters.isWatchpoint()
                && bp->m_parameters.address == params.address
                && bp->m_parameters.size == params.size
                && bp->m_parameters.expression == params.expression
                && bp->m_parameters.bitpos == params.bitpos;
    });
}

Breakpoint BreakHandler::findBreakpointByIndex(const QModelIndex &index) const
{
    return itemForIndexAtLevel<1>(index);
}

SubBreakpoint BreakHandler::findSubBreakpointByIndex(const QModelIndex &index) const
{
    return itemForIndexAtLevel<2>(index);
}

Breakpoint BreakHandler::findBreakpointByModelId(int modelId) const
{
    return findItemAtLevel<1>([modelId](const Breakpoint &bp) {
        QTC_ASSERT(bp, return false);
        return bp->modelId() == modelId;
    });
}

Breakpoints BreakHandler::findBreakpointsByIndex(const QList<QModelIndex> &list) const
{
    QSet<Breakpoint> items;
    for (const QModelIndex &index : list) {
        if (Breakpoint bp = findBreakpointByIndex(index))
            items.insert(bp);
    }
    return Utils::toList(items);
}

SubBreakpoints BreakHandler::findSubBreakpointsByIndex(const QList<QModelIndex> &list) const
{
    QSet<SubBreakpoint> items;
    for (const QModelIndex &index : list) {
        if (SubBreakpoint sbp = findSubBreakpointByIndex(index))
            items.insert(sbp);
    }
    return Utils::toList(items);

}

QString BreakHandler::displayFromThreadSpec(int spec)
{
    return spec == -1 ? Tr::tr("(all)") : QString::number(spec);
}

int BreakHandler::threadSpecFromDisplay(const QString &str)
{
    bool ok = false;
    int result = str.toInt(&ok);
    return ok ? result : -1;
}

static QString trimmedFileName(const FilePath &fullPath)
{
    const Project *project = ProjectTree::currentProject();
    const FilePath projectDirectory = project ? project->projectDirectory() : FilePath();
    if (projectDirectory.exists())
        return fullPath.relativeNativePathFromDir(projectDirectory);

    return fullPath.toUserOutput();
}

const QString empty("-");

QVariant BreakpointItem::data(int column, int role) const
{
    if (role == Qt::ForegroundRole) {
        static const QVariant gray(QColor(140, 140, 140));
        switch (m_state) {
            case BreakpointInsertionRequested:
            case BreakpointInsertionProceeding:
            case BreakpointUpdateRequested:
            case BreakpointUpdateProceeding:
            case BreakpointRemoveRequested:
            case BreakpointRemoveProceeding:
                return gray;
            case BreakpointInserted:
            case BreakpointNew:
            case BreakpointDead:
                break;
        };
    }

    switch (column) {
        case BreakpointNumberColumn:
            if (role == Qt::DisplayRole)
                return m_displayName.isEmpty() ? m_responseId : m_displayName;
            if (role == Qt::DecorationRole)
                return icon(m_needsLocationMarker);
            break;
        case BreakpointFunctionColumn:
            if (role == Qt::DisplayRole) {
                if (!m_parameters.functionName.isEmpty())
                    return simplifyType(m_parameters.functionName);

                if (m_parameters.type == BreakpointAtMain
                        || m_parameters.type == BreakpointAtThrow
                        || m_parameters.type == BreakpointAtCatch
                        || m_parameters.type == BreakpointAtFork
                        || m_parameters.type == BreakpointAtExec
                        //|| m_response.type == BreakpointAtVFork
                        || m_parameters.type == BreakpointAtSysCall)
                    return typeToString(m_parameters.type);

                if (m_parameters.type == WatchpointAtAddress)
                    return Tr::tr("Data at 0x%1").arg(m_parameters.address, 0, 16);

                if (m_parameters.type == WatchpointAtExpression)
                    return Tr::tr("Data at %1").arg(m_parameters.expression);

                return empty;
            }
            break;
        case BreakpointFileColumn:
            if (role == Qt::DisplayRole)
                return trimmedFileName(markerFileName());
            if (role == Qt::ToolTipRole)
                return markerFileName().toUserOutput();
            break;
        case BreakpointLineColumn:
            if (role == Qt::DisplayRole) {
                const int line = markerLineNumber();
                if (line > 0)
                    return line;
                return empty;
            }
            if (role == Qt::UserRole + 1)
                return m_parameters.textPosition.line;
            break;
        case BreakpointAddressColumn:
            if (role == Qt::DisplayRole) {
                if (m_parameters.address)
                    return QString("0x%1").arg(m_parameters.address, 0, 16);
                return QVariant();
            }
            break;
        case BreakpointConditionColumn:
            if (role == Qt::DisplayRole)
                return m_parameters.condition;
            if (role == Qt::ToolTipRole)
                return Tr::tr("Breakpoint will only be hit if this condition is met.");
            if (role == Qt::UserRole + 1)
                return m_parameters.condition;
            break;
        case BreakpointIgnoreColumn:
            if (role == Qt::DisplayRole) {
                const int ignoreCount = m_parameters.ignoreCount;
                return ignoreCount ? QVariant(ignoreCount) : QVariant(QString());
            }
            if (role == Qt::ToolTipRole)
                return Tr::tr("Breakpoint will only be hit after being ignored so many times.");
            if (role == Qt::UserRole + 1)
                return m_parameters.ignoreCount;
            break;
        case BreakpointThreadsColumn:
            if (role == Qt::DisplayRole)
                return BreakHandler::displayFromThreadSpec(m_parameters.threadSpec);
            if (role == Qt::ToolTipRole)
                return Tr::tr("Breakpoint will only be hit in the specified thread(s).");
            if (role == Qt::UserRole + 1)
                return BreakHandler::displayFromThreadSpec(m_parameters.threadSpec);
            break;
    }

    if (role == Qt::ToolTipRole && settings().useToolTipsInBreakpointsView())
        return toolTip();

    return {};
}

void BreakpointItem::addToCommand(
    const FilePath &buildPath, DebuggerCommand *cmd, BreakpointPathUsage defaultPathUsage) const
{
    QTC_ASSERT(m_globalBreakpoint, return);
    const BreakpointParameters &requested = requestedParameters();
    cmd->arg("modelid", modelId());
    cmd->arg("id", m_responseId);
    cmd->arg("type", requested.type);
    cmd->arg("ignorecount", requested.ignoreCount);
    cmd->arg("condition", toHex(requested.condition));
    cmd->arg("command", toHex(requested.command));
    cmd->arg("function", requested.functionName);
    cmd->arg("oneshot", requested.oneShot);
    cmd->arg("enabled", requested.enabled);
    cmd->arg("line", requested.textPosition.line);
    cmd->arg("address", requested.address);
    cmd->arg("expression", requested.expression);
    cmd->arg("tracepoint", requested.tracepoint);
    cmd->arg("message", toHex(requested.message));

    BreakpointPathUsage pathUsage = (requested.pathUsage
                                     == BreakpointPathUsage::BreakpointPathUsageEngineDefault)
                                        ? defaultPathUsage
                                        : requested.pathUsage;

    cmd->arg(
        "file",
        pathUsage == BreakpointPathUsage::BreakpointUseFullPath
            ? buildPath.withNewMappedPath(requested.fileName).path()
            : requested.fileName.fileName());
}

void BreakpointItem::updateFromGdbOutput(const GdbMi &bkpt, const DebuggerRunParameters &rp)
{
    m_parameters.updateFromGdbOutput(bkpt, rp);
    adjustMarker();
}

int BreakpointItem::modelId() const
{
    return m_globalBreakpoint ? m_globalBreakpoint->modelId() : 0;
}

void BreakpointItem::setPending(bool pending)
{
    m_parameters.pending = pending;
    adjustMarker();
}

void BreakHandler::removeAlienBreakpoint(const QString &rid)
{
    Breakpoint bp = findBreakpointByResponseId(rid);
    destroyItem(bp);
}

void BreakHandler::requestBreakpointInsertion(const Breakpoint &bp)
{
    bp->gotoState(BreakpointInsertionRequested, BreakpointNew);
    m_engine->insertBreakpoint(bp);
}

void BreakHandler::requestBreakpointUpdate(const Breakpoint &bp)
{
    bp->gotoState(BreakpointUpdateRequested, BreakpointInserted);
    m_engine->updateBreakpoint(bp);
}

void BreakHandler::requestBreakpointRemoval(const Breakpoint &bp)
{
    bp->gotoState(BreakpointRemoveRequested, BreakpointInserted);
    m_engine->removeBreakpoint(bp);
}

void BreakHandler::requestBreakpointEnabling(const Breakpoint &bp, bool enabled)
{
    if (bp->m_parameters.enabled != enabled) {
        bp->update();
        requestBreakpointUpdate(bp);
    }
}

void BreakHandler::requestSubBreakpointEnabling(const SubBreakpoint &sbp, bool enabled)
{
    if (sbp->params.enabled != enabled) {
        sbp->params.enabled = enabled;
        sbp->breakpoint()->update();
        QTimer::singleShot(0, m_engine, [this, sbp, enabled] {
            m_engine->enableSubBreakpoint(sbp, enabled);
        });
    }
}

void BreakpointItem::setMarkerFileAndPosition(const FilePath &fileName,
                                              const Text::Position &textPosition)
{
    if (m_parameters.fileName == fileName && m_parameters.textPosition == textPosition)
        return;
    m_parameters.fileName = fileName;
    m_parameters.textPosition = textPosition;
    destroyMarker();
    updateMarker();
    update();
}

static bool isAllowedTransition(BreakpointState from, BreakpointState to)
{
    switch (from) {
    case BreakpointNew:
        return to == BreakpointInsertionRequested
            || to == BreakpointDead;
    case BreakpointInsertionRequested:
        return to == BreakpointInsertionProceeding;
    case BreakpointInsertionProceeding:
        return to == BreakpointInserted
            || to == BreakpointDead
            || to == BreakpointUpdateRequested
            || to == BreakpointRemoveRequested;
    case BreakpointUpdateRequested:
        return to == BreakpointUpdateProceeding;
    case BreakpointUpdateProceeding:
        return to == BreakpointInserted
            || to == BreakpointDead;
    case BreakpointInserted:
        return to == BreakpointUpdateRequested
            || to == BreakpointRemoveRequested;
    case BreakpointRemoveRequested:
        return to == BreakpointRemoveProceeding;
    case BreakpointRemoveProceeding:
        return to == BreakpointDead;
    case BreakpointDead:
        return false;
    }
    qDebug() << "UNKNOWN BREAKPOINT STATE:" << from;
    return false;
}

void BreakpointItem::gotoState(BreakpointState target, BreakpointState assumedCurrent)
{
    QTC_ASSERT(m_state == assumedCurrent, qDebug() << target << m_state);
    setState(target);
}

void BreakpointItem::setNeedsLocationMarker(bool needsLocationMarker)
{
    if (m_needsLocationMarker == needsLocationMarker)
        return;
    m_needsLocationMarker = needsLocationMarker;
    update();
}

void BreakHandler::updateDisassemblerMarker(const Breakpoint &bp)
{
    return m_engine->disassemblerAgent()->updateBreakpointMarker(bp);
}

void BreakHandler::removeDisassemblerMarker(const Breakpoint &bp)
{
    m_engine->disassemblerAgent()->removeBreakpointMarker(bp);
    bp->destroyMarker();
    if (GlobalBreakpoint gbp = bp->globalBreakpoint())
        gbp->updateMarker();
}

static bool matches(const Location &loc, const BreakpointParameters &bp)
{
    if (loc.fileName() == bp.fileName && loc.textPosition() == bp.textPosition
            && bp.textPosition.line > 0)
        return true;
    if (loc.address() == bp.address && bp.address > 0)
        return true;
    return false;
}

void BreakHandler::setLocation(const Location &loc)
{
    forItemsAtLevel<1>([loc](Breakpoint bp) {
        bool needsMarker = matches(loc, bp->parameters());
        if (GlobalBreakpoint gpb = bp->globalBreakpoint())
            needsMarker = needsMarker || matches(loc, gpb->requestedParameters());
        bp->setNeedsLocationMarker(needsMarker);
    });
}

void BreakHandler::resetLocation()
{
    forItemsAtLevel<1>([](Breakpoint bp) { bp->setNeedsLocationMarker(false); });
}

void BreakpointItem::setState(BreakpointState state)
{
    //qDebug() << "BREAKPOINT STATE TRANSITION, ID: " << m_id
    //    << " FROM: " << state << " TO: " << state;
    if (!isAllowedTransition(m_state, state)) {
        qDebug() << "UNEXPECTED BREAKPOINT STATE TRANSITION" << m_state << state;
        QTC_CHECK(false);
    }

    if (m_state == state) {
        qDebug() << "STATE UNCHANGED: " << responseId() << m_state;
        return;
    }

    m_state = state;

    // FIXME: updateMarker() should recognize the need for icon changes.
    if (state == BreakpointInserted || state == BreakpointInsertionRequested) {
        destroyMarker();
        updateMarker();
    }
    update();
}

const GlobalBreakpoint BreakpointItem::globalBreakpoint() const
{
    return m_globalBreakpoint;
}

void BreakpointItem::setParameters(const BreakpointParameters &value)
{
    m_parameters = value;
    adjustMarker();
}

void BreakpointItem::setEnabled(bool on)
{
    m_parameters.enabled = on;
    adjustMarker();
}

void DebuggerEngine::notifyBreakpointInsertProceeding(const Breakpoint &bp)
{
    QTC_ASSERT(bp, return);
    bp->gotoState(BreakpointInsertionProceeding, BreakpointInsertionRequested);
}

void DebuggerEngine::notifyBreakpointInsertOk(const Breakpoint &bp)
{
    QTC_ASSERT(bp, return);
    bp->adjustMarker();
    bp->gotoState(BreakpointInserted, BreakpointInsertionProceeding);
    breakHandler()->updateDisassemblerMarker(bp);
    bp->updateMarker();
}

void DebuggerEngine::notifyBreakpointInsertFailed(const Breakpoint &bp)
{
    QTC_ASSERT(bp, return);
    GlobalBreakpoint gbp = bp->globalBreakpoint();
    bp->gotoState(BreakpointDead, BreakpointInsertionProceeding);
    breakHandler()->removeDisassemblerMarker(bp);
    breakHandler()->destroyItem(bp);
    QTC_ASSERT(gbp, return);
    gbp->updateMarker();
}

void DebuggerEngine::notifyBreakpointRemoveProceeding(const Breakpoint &bp)
{
    QTC_ASSERT(bp, return);
    bp->gotoState(BreakpointRemoveProceeding, BreakpointRemoveRequested);
}

void DebuggerEngine::notifyBreakpointRemoveOk(const Breakpoint &bp)
{
    QTC_ASSERT(bp, return);
    QTC_ASSERT(bp->state() == BreakpointRemoveProceeding, qDebug() << bp->state());
    breakHandler()->removeDisassemblerMarker(bp);
    breakHandler()->destroyItem(bp);
}

void DebuggerEngine::notifyBreakpointRemoveFailed(const Breakpoint &bp)
{
    QTC_ASSERT(bp, return);
    QTC_ASSERT(bp->m_state == BreakpointRemoveProceeding, qDebug() << bp->m_state);
    breakHandler()->removeDisassemblerMarker(bp);
    breakHandler()->destroyItem(bp);
}

void DebuggerEngine::notifyBreakpointChangeProceeding(const Breakpoint &bp)
{
    bp->gotoState(BreakpointUpdateProceeding, BreakpointUpdateRequested);
}

void DebuggerEngine::notifyBreakpointChangeOk(const Breakpoint &bp)
{
    bp->gotoState(BreakpointInserted, BreakpointUpdateProceeding);
}

void DebuggerEngine::notifyBreakpointChangeFailed(const Breakpoint &bp)
{
    bp->gotoState(BreakpointDead, BreakpointUpdateProceeding);
}

void DebuggerEngine::notifyBreakpointNeedsReinsertion(const Breakpoint &bp)
{
    QTC_ASSERT(bp, return);
    QTC_ASSERT(bp->m_state == BreakpointUpdateProceeding, qDebug() << bp->m_state);
    bp->m_state = BreakpointInsertionRequested;
}

void BreakHandler::handleAlienBreakpoint(const QString &responseId, const BreakpointParameters &params)
{
    // Search a breakpoint we might refer to.
    Breakpoint bp = findItemAtLevel<1>([params, responseId](const Breakpoint &bp) {
        if (bp && !bp->responseId().isEmpty() && bp->responseId() == responseId)
            return true;
        return bp && isSimilarTo(bp->m_parameters, params);
    });

    if (bp) {
        // FIXME: x.y looks rather gdb specific.
        if (bp->responseId().contains('.')) {
            SubBreakpoint loc = bp->findOrCreateSubBreakpoint(bp->responseId());
            QTC_ASSERT(loc, return);
            loc->setParameters(params);
        } else {
            bp->setParameters(params);
        }
    } else {
        bp = new BreakpointItem(nullptr);
        bp->m_responseId = responseId;
        bp->m_parameters = params;
        bp->m_state = BreakpointInserted;
        bp->updateMarker();
        rootItem()->appendChild(bp);
        // This has no global breakpoint, so there's nothing to update here.
    }
}

SubBreakpoint BreakpointItem::findOrCreateSubBreakpoint(const QString &responseId)
{
    SubBreakpoint loc = findFirstLevelChild([&](const SubBreakpoint &l) {
        return l->responseId == responseId;
    });
    if (loc) {
        // This modifies an existing sub-breakpoint.
        loc->update();
    } else {
        // This is a new sub-breakpoint.
        loc = new SubBreakpointItem;
        loc->responseId = responseId;
        appendChild(loc);
        expand();
    }
    return loc;
}

bool BreakHandler::tryClaimBreakpoint(const GlobalBreakpoint &gbp)
{
    const Breakpoints bps = breakpoints();
    if (Utils::anyOf(bps, [gbp](const Breakpoint &bp) { return bp->globalBreakpoint() == gbp; }))
        return false;

    if (!m_engine->acceptsBreakpoint(gbp->requestedParameters())) {
        m_engine->showMessage(QString("BREAKPOINT %1 IS NOT ACCEPTED BY ENGINE %2")
                    .arg(gbp->displayName()).arg(objectName()));
        return false;
    }

    m_engine->showMessage(QString("TAKING OWNERSHIP OF BREAKPOINT %1").arg(gbp->displayName()));

    Breakpoint bp(new BreakpointItem(gbp));
    rootItem()->appendChild(bp);

    gbp->updateMarker();
    requestBreakpointInsertion(bp);

    return true;
}

void BreakHandler::gotoLocation(const Breakpoint &bp) const
{
    QTC_ASSERT(bp, return);
    QTC_ASSERT(m_engine, return);

    // Capture everything we need up front. EditorManager::openEditor() below spins
    // a local event loop, during which the debug session may finish and destroy this
    // engine - and with it this handler, the breakpoint items and m_engine. Guard the
    // engine with a local QPointer so we never dereference freed memory afterwards.
    const quint64 address = bp->m_parameters.address;
    const BreakpointType type = bp->m_parameters.type;
    const QPointer<DebuggerEngine> engine = m_engine;

    if (type == BreakpointByAddress) {
        engine->gotoLocation(address);
    } else {
        const FilePath fileName = bp->markerFileName();
        const int lineNumber = bp->markerLineNumber();
        // Don't use gotoLocation unconditionally as this ends up in
        // disassembly if OperateByInstruction is on. But fallback
        // to disassembly if we can't open the file.
        if (IEditor *editor = EditorManager::openEditor(fileName))
            editor->gotoLine(lineNumber, 0);
        else if (engine)
            engine->openDisassemblerView(Location(address));
    }
}

const Breakpoints BreakHandler::breakpoints() const
{
    QList<Breakpoint> items;
    forItemsAtLevel<1>([&items](Breakpoint bp) { if (bp) items.append(bp); });
    return items;
}

void BreakpointItem::adjustMarker()
{
    destroyMarker();
    updateMarker();
}

void BreakpointItem::deleteBreakpoint()
{
    QTC_ASSERT(!globalBreakpoint(), return); // Use deleteBreakpoint(GlobalBreakpoint gbp) instead.

    bool found = false;
    for (QPointer<DebuggerEngine> engine : EngineManager::engines()) {
        if (QTC_GUARD(engine)) {
            QTC_CHECK(!found);
            found = true;
            engine->breakHandler()->requestBreakpointRemoval(this);
        }
    }
    QTC_CHECK(found);
}

void BreakpointItem::deleteGlobalOrThisBreakpoint()
{
    if (GlobalBreakpoint gbp = globalBreakpoint()) {
        gbp->deleteBreakpoint();
    } else {
        deleteBreakpoint();
    }
}

bool BreakHandler::setData(const QModelIndex &idx, const QVariant &value, int role)
{
    if (role == BaseTreeView::ItemActivatedRole) {
        if (Breakpoint bp = findBreakpointByIndex(idx))
            gotoLocation(bp);
        return true;
    }

    if (role == BaseTreeView::ItemViewEventRole) {
        ItemViewEvent ev = value.value<ItemViewEvent>();

        if (ev.as<QContextMenuEvent>())
            return contextMenuEvent(ev);

        if (auto kev = ev.as<QKeyEvent>(QEvent::KeyPress)) {
            if (kev->key() == Qt::Key_Delete || kev->key() == Qt::Key_Backspace) {
                QModelIndexList si = ev.currentOrSelectedRows();
                const Breakpoints bps = findBreakpointsByIndex(si);
                for (Breakpoint bp : bps) {
                    if (GlobalBreakpoint gbp = bp->globalBreakpoint())
                        gbp->deleteBreakpoint();
                    else
                        bp->deleteBreakpoint();
                }
//                int row = qMin(rowCount() - ids.size() - 1, idx.row());
//                setCurrentIndex(index(row, 0));   FIXME
                return true;
            }
            if (kev->key() == Qt::Key_Space) {
                const QModelIndexList selectedIds = ev.selectedRows();
                if (!selectedIds.isEmpty()) {
                    const Breakpoints bps = findBreakpointsByIndex(selectedIds);
                    const SubBreakpoints sbps = findSubBreakpointsByIndex(selectedIds);
                    const bool isEnabled = (bps.isEmpty() && sbps.isEmpty())
                            || (!bps.isEmpty() && bps.at(0)->isEnabled())
                            || (!sbps.isEmpty() && sbps.at(0)->params.enabled);
                    for (Breakpoint bp : bps) {
                        if (GlobalBreakpoint gbp = bp->globalBreakpoint())
                            gbp->setEnabled(!isEnabled, false);
                        requestBreakpointEnabling(bp, !isEnabled);
                    }
                    for (SubBreakpoint sbp : sbps)
                        requestSubBreakpointEnabling(sbp, !isEnabled);
                    return true;
                }
            }
        }

        if (ev.as<QMouseEvent>(QEvent::MouseButtonDblClick)) {
            if (Breakpoint bp = findBreakpointByIndex(idx)) {
                if (idx.column() >= BreakpointAddressColumn)
                    editBreakpoints({bp}, ev.view());
                else
                    gotoLocation(bp);
            } else if (SubBreakpoint loc = itemForIndexAtLevel<2>(idx)) {
                gotoLocation(loc->breakpoint());
            } else {
                BreakpointManager::executeAddBreakpointDialog();
            }
            return true;
        }
    }

    return false;
}

bool BreakHandler::contextMenuEvent(const ItemViewEvent &ev)
{
    const QModelIndexList selectedIndices = ev.selectedRows();

    const Breakpoints selectedBreakpoints = findBreakpointsByIndex(selectedIndices);
    const bool breakpointsEnabled = selectedBreakpoints.isEmpty() || selectedBreakpoints.at(0)->isEnabled();

    QList<SubBreakpointItem *> selectedLocations;
    bool handlesIndividualLocations = false;
    for (const QModelIndex &index : selectedIndices) {
        if (SubBreakpointItem *location = itemForIndexAtLevel<2>(index)) {
            if (selectedLocations.contains(location))
                continue;
            selectedLocations.append(location);
            if (m_engine->hasCapability(BreakIndividualLocationsCapability))
                handlesIndividualLocations = true;
        }
    }
    const bool locationsEnabled = selectedLocations.isEmpty() || selectedLocations.at(0)->params.enabled;

    auto menu = new QMenu;

    addAction(this, menu, Tr::tr("Add Breakpoint..."), true, &BreakpointManager::executeAddBreakpointDialog);

    addAction(this, menu, Tr::tr("Delete Selected Breakpoints"),
              !selectedBreakpoints.isEmpty(),
              [selectedBreakpoints] {
                for (Breakpoint bp : selectedBreakpoints) {
                    if (GlobalBreakpoint gbp = bp->globalBreakpoint()) {
                        gbp->deleteBreakpoint();
                    } else {
                        bp->deleteBreakpoint();
                    }
                }
             });

    addAction(this, menu, Tr::tr("Edit Selected Breakpoints..."),
              !selectedBreakpoints.isEmpty(),
              [this, selectedBreakpoints, ev] { editBreakpoints(selectedBreakpoints, ev.view()); });


    // FIXME BP: m_engine->threadsHandler()->currentThreadId();
    // int threadId = 0;
    // addAction(menu,
    //           threadId == -1 ? Tr::tr("Associate Breakpoint with All Threads")
    //                          : Tr::tr("Associate Breakpoint with Thread %1").arg(threadId),
    //           !selectedItems.isEmpty(),
    //           [this, selectedItems, threadId] {
    //                 for (Breakpoint bp : selectedItems)
    //                     bp.setThreadSpec(threadId);
    //           });

    menu->addSeparator();

    addAction(this, menu,
              selectedBreakpoints.size() > 1
                  ? breakpointsEnabled ? Tr::tr("Disable Selected Breakpoints") : Tr::tr("Enable Selected Breakpoints")
                  : breakpointsEnabled ? Tr::tr("Disable Breakpoint") : Tr::tr("Enable Breakpoint"),
              !selectedBreakpoints.isEmpty(),
              [this, selectedBreakpoints, breakpointsEnabled] {
                    for (Breakpoint bp : selectedBreakpoints) {
                        if (GlobalBreakpoint gbp = bp->globalBreakpoint())
                            gbp->setEnabled(!breakpointsEnabled, false);
                        requestBreakpointEnabling(bp, !breakpointsEnabled);
                    }
              }
    );

    bool canDisableAll = false;
    bool canEnableAll = false;
    forItemsAtLevel<1>([&canDisableAll, &canEnableAll](Breakpoint bp) {
        if (bp)
           (bp->isEnabled() ? canDisableAll : canEnableAll) = true;
    });

    addAction(this, menu, Tr::tr("Disable All Breakpoints"), canDisableAll, [this] {
        forItemsAtLevel<1>([this](Breakpoint bp) {
            if (bp && bp->isEnabled()) {
                if (GlobalBreakpoint gbp = bp->globalBreakpoint())
                    gbp->setEnabled(false, false);
                requestBreakpointEnabling(bp, false);
            }
        });
    });

    addAction(this, menu, Tr::tr("Enable All Breakpoints"), canEnableAll, [this] {
        forItemsAtLevel<1>([this](Breakpoint bp) {
            if (bp && !bp->isEnabled()) {
                if (GlobalBreakpoint gbp = bp->globalBreakpoint())
                    gbp->setEnabled(true, false);
                requestBreakpointEnabling(bp, true);
            }
        });
    });

    addAction(this, menu,
              selectedLocations.size() > 1
                  ? locationsEnabled ? Tr::tr("Disable Selected Locations") : Tr::tr("Enable Selected Locations")
                  : locationsEnabled ? Tr::tr("Disable Location") : Tr::tr("Enable Location"),
              !selectedLocations.isEmpty() && handlesIndividualLocations,
              [this, selectedLocations, locationsEnabled] {
                   for (SubBreakpointItem * const sbp : selectedLocations)
                       requestSubBreakpointEnabling(QPointer(sbp), !locationsEnabled);
              }
    );

    menu->addSeparator();

    addAction(this, menu, Tr::tr("Delete All Breakpoints"),
              rowCount() > 0,
              &BreakpointManager::executeDeleteAllBreakpointsDialog);

    // Delete by file: Find indices of breakpoints of the same file.
    QList<Breakpoint> breakpointsInFile;
    QString file;
    if (Breakpoint bp = itemForIndexAtLevel<1>(ev.sourceModelIndex())) {
        const QModelIndex index = ev.sourceModelIndex().sibling(ev.sourceModelIndex().row(), BreakpointFileColumn);
        if (!file.isEmpty()) {
            for (int i = 0; i != rowCount(); ++i)
                if (index.data().toString() == file)
                    breakpointsInFile.append(findBreakpointByIndex(index));
        }
    }
    addAction(this, menu, Tr::tr("Delete Breakpoints of \"%1\"").arg(file),
              Tr::tr("Delete Breakpoints of File"),
              breakpointsInFile.size() > 1,
              [breakpointsInFile] {
                for (Breakpoint bp : breakpointsInFile)
                    bp->deleteGlobalOrThisBreakpoint();
              });

    menu->addSeparator();

    menu->addAction(settings().useToolTipsInBreakpointsView.action());

    addStandardActions(qobject_cast<BaseTreeView *>(ev.view()), menu);

    menu->setAttribute(Qt::WA_DeleteOnClose);
    menu->popup(ev.globalPos());

    return true;
}

void BreakHandler::removeBreakpoint(const Breakpoint &bp)
{
    QTC_ASSERT(bp, return);
    switch (bp->m_state) {
    case BreakpointRemoveRequested:
        break;
    case BreakpointInserted:
    case BreakpointInsertionProceeding:
        requestBreakpointRemoval(bp);
        break;
    case BreakpointNew:
        bp->setState(BreakpointDead);
        bp->destroyMarker();
        destroyItem(bp);
        break;
    default:
        qWarning("Warning: Cannot remove breakpoint %s in state '%s'.",
               qPrintable(bp->responseId()), qPrintable(stateToString(bp->m_state)));
        bp->m_state = BreakpointRemoveRequested;
        break;
    }
}

static unsigned int engineBreakpointCapabilities(DebuggerEngine *engine)
{
    unsigned int enabledParts = ~0;
    if (!engine->hasCapability(BreakConditionCapability))
        enabledParts &= ~ConditionPart;
    if (!engine->hasCapability(BreakModuleCapability))
        enabledParts &= ~ModulePart;
    if (!engine->hasCapability(TracePointCapability))
        enabledParts &= ~TracePointPart;
    return enabledParts;
}

void BreakHandler::editBreakpoint(const Breakpoint &bp, QWidget *parent)
{
    QTC_ASSERT(bp, return);
    BreakpointParameters params = bp->requestedParameters();
    BreakpointParts parts = NoParts;

    BreakpointDialog dialog(engineBreakpointCapabilities(m_engine), parent);
    if (!dialog.showDialog(&params, &parts))
        return;

    if (params != bp->requestedParameters()) {
        if (GlobalBreakpoint gbp = bp->globalBreakpoint()) {
            gbp->setParameters(params);
        } else {
            bp->setParameters(params);
        }
        updateDisassemblerMarker(bp);
        bp->updateMarker();
        bp->update();
        if (bp->needsChange() && bp->m_state != BreakpointNew)
            requestBreakpointUpdate(bp);
    }
}

void BreakHandler::editBreakpoints(const Breakpoints &bps, QWidget *parent)
{
    QTC_ASSERT(!bps.isEmpty(), return);

    Breakpoint bp = bps.at(0);

    if (bps.size() == 1) {
        editBreakpoint(bp, parent);
        return;
    }

    // This allows to change properties of multiple breakpoints at a time.
    QTC_ASSERT(bp, return);

    MultiBreakPointsDialog dialog(engineBreakpointCapabilities(m_engine), parent);
    dialog.setCondition(bp->condition());
    dialog.setIgnoreCount(bp->ignoreCount());
    dialog.setThreadSpec(bp->threadSpec());

    if (dialog.exec() == QDialog::Rejected)
        return;

    const QString newCondition = dialog.condition();
    const int newIgnoreCount = dialog.ignoreCount();
    const int newThreadSpec = dialog.threadSpec();

    for (Breakpoint bp : bps) {
        if (bp) {
            if (GlobalBreakpoint gbp = bp->globalBreakpoint()) {
                BreakpointParameters params = bp->requestedParameters();
                params.condition = newCondition;
                params.ignoreCount = newIgnoreCount;
                params.threadSpec = newThreadSpec;
                gbp->setParameters(params);
            } else {
                bp->m_parameters.condition = newCondition;
                bp->m_parameters.ignoreCount = newIgnoreCount;
                bp->m_parameters.threadSpec = newThreadSpec;
            }

            if (bp->m_state != BreakpointNew)
                requestBreakpointUpdate(bp);
        }
    }
}

//////////////////////////////////////////////////////////////////
//
// Storage
//
//////////////////////////////////////////////////////////////////

BreakpointItem::BreakpointItem(const GlobalBreakpoint &gbp)
    : m_globalBreakpoint(gbp)
{
}

BreakpointItem::~BreakpointItem()
{
    delete m_marker;
}

void BreakpointItem::destroyMarker()
{
    if (m_marker) {
        BreakpointMarker *m = m_marker;
        m_marker = nullptr;
        delete m;
    }
}

FilePath BreakpointItem::markerFileName() const
{
    // Some heuristics to find a "good" file name.
    if (m_parameters.fileName.exists())
        return m_parameters.fileName.absoluteFilePath();

    const FilePath origFileName = requestedParameters().fileName;
    if (m_parameters.fileName.endsWith(origFileName.fileName()))
        return m_parameters.fileName;
    if (origFileName.endsWith(m_parameters.fileName.fileName()))
        return origFileName;

    return m_parameters.fileName.toFSPathString().size() > origFileName.toFSPathString().size()
               ? m_parameters.fileName
               : origFileName;
}

int BreakpointItem::markerLineNumber() const
{
    if (m_parameters.textPosition.line > 0)
        return m_parameters.textPosition.line;
    return requestedParameters().textPosition.line;
}

const BreakpointParameters &BreakpointItem::requestedParameters() const
{
    return m_globalBreakpoint ? m_globalBreakpoint->requestedParameters() : m_alienParameters;
}

static void formatAddress(QTextStream &str, quint64 address)
{
    if (address) {
        str << "0x";
        str.setIntegerBase(16);
        str << address;
        str.setIntegerBase(10);
    }
}

bool BreakpointItem::needsChange() const
{
    const BreakpointParameters &oparams = requestedParameters();
    if (!oparams.conditionsMatch(m_parameters.condition))
        return true;
    if (oparams.ignoreCount != m_parameters.ignoreCount)
        return true;
    if (oparams.enabled != m_parameters.enabled)
        return true;
    if (oparams.threadSpec != m_parameters.threadSpec)
        return true;
    if (oparams.command != m_parameters.command)
        return true;
    if (oparams.type == BreakpointByFileAndLine && oparams.textPosition != m_parameters.textPosition)
        return true;
    if (oparams.pathUsage != m_parameters.pathUsage)
        return true;
    // FIXME: Too strict, functions may have parameter lists, or not.
    // if (m_params.type == BreakpointByFunction && m_params.functionName != m_response.functionName)
    //     return true;
    // if (m_params.type == BreakpointByAddress && m_params.address != m_response.address)
    //     return true;
    return false;
}

void BreakpointItem::updateMarker()
{
    const FilePath &file = markerFileName();
    int line = markerLineNumber();
    if (m_marker && (file != m_marker->filePath() || line != m_marker->lineNumber()))
        destroyMarker();

    if (!m_marker && !file.isEmpty() && line > 0)
        m_marker = new BreakpointMarker(this, file, line);
}

QIcon BreakpointItem::icon(bool withLocationMarker) const
{
    // FIXME: This seems to be called on each cursor blink as soon as the
    // cursor is near a line with a breakpoint marker (+/- 2 lines or so).
    if (m_parameters.isTracepoint())
        return ProjectExplorer::Icons::TRACEPOINT.icon();
    if (m_parameters.type == WatchpointAtAddress)
        return Icons::WATCHPOINT.icon();
    if (m_parameters.type == WatchpointAtExpression)
        return Icons::WATCHPOINT.icon();
    if (!m_parameters.enabled)
        return Icons::BREAKPOINT_DISABLED.icon();
    if (m_state == BreakpointInserted && !m_parameters.pending)
        return withLocationMarker ? Icons::BREAKPOINT_WITH_LOCATION.icon()
                                  : Icons::BREAKPOINT.icon();
    return Icons::BREAKPOINT_PENDING.icon();
}

QString BreakpointItem::toolTip() const
{
    const BreakpointParameters &requested = requestedParameters();
    QString rc;
    QTextStream str(&rc);
    str << "<html><body><b>" << Tr::tr("Breakpoint") << "</b>"
        << "<table>"
        << "<tr><td>" << Tr::tr("Internal ID:")
        << "</td><td>" << m_responseId << "</td></tr>"
        << "<tr><td>" << Tr::tr("State:")
        << "</td><td>" << (requestedParameters().enabled ? Tr::tr("Enabled") : Tr::tr("Disabled"));
    if (m_parameters.pending)
        str << ", " << Tr::tr("pending");
    str << ", " << stateToString(m_state) << "</td></tr>";
    str << "<tr><td>" << Tr::tr("Breakpoint Type:")
        << "</td><td>" << typeToString(requested.type) << "</td></tr>"
        << "<tr><td>" << Tr::tr("Marker File:")
        << "</td><td>" << markerFileName().toUserOutput() << "</td></tr>"
        << "<tr><td>" << Tr::tr("Marker Line:")
        << "</td><td>" << markerLineNumber() << "</td></tr>";
    if (m_parameters.hitCount) {
        str << "<tr><td>" << Tr::tr("Hit Count:")
            << "</td><td>" << *m_parameters.hitCount << "</td></tr>";
    }

    str << "</table><br><table>"
        << "<tr><th>" << Tr::tr("Property")
        << "</th><th>" << Tr::tr("Requested")
        << "</th><th>" << Tr::tr("Obtained") << "</th></tr>";
    if (!m_displayName.isEmpty()) {
        str << "<tr><td>" << Tr::tr("Display Name:")
            << "</td><td>&mdash;</td><td>" << m_displayName << "</td></tr>";
    }
    if (m_parameters.type == BreakpointByFunction) {
        str << "<tr><td>" << Tr::tr("Function Name:")
        << "</td><td>" << requested.functionName
        << "</td><td>" << m_parameters.functionName
        << "</td></tr>";
    }
    if (m_parameters.type == BreakpointByFileAndLine) {
        str << "<tr><td>" << Tr::tr("File Name:")
            << "</td><td>" << requested.fileName.toUserOutput()
            << "</td><td>" << m_parameters.fileName.toUserOutput()
            << "</td></tr>"
            << "<tr><td>" << Tr::tr("Line Number:")
            << "</td><td>" << requested.textPosition.line
            << "</td><td>" << m_parameters.textPosition.line << "</td></tr>";
    }
    if (requested.type == BreakpointByFunction || m_parameters.type == BreakpointByFileAndLine) {
        str << "<tr><td>" << Tr::tr("Module:")
            << "</td><td>" << requested.module
            << "</td><td>" << m_parameters.module
            << "</td></tr>";
    }
    str << "<tr><td>" << Tr::tr("Breakpoint Address:")
        << "</td><td>";
    formatAddress(str, requested.address);
    str << "</td><td>";
    formatAddress(str, m_parameters.address);
    str << "</td></tr>";
    if (!requested.command.isEmpty() || !m_parameters.command.isEmpty()) {
        str << "<tr><td>" << Tr::tr("Command:")
            << "</td><td>" << requested.command
            << "</td><td>" << m_parameters.command
            << "</td></tr>";
    }
    if (!requested.message.isEmpty() || !m_parameters.message.isEmpty()) {
        str << "<tr><td>" << Tr::tr("Message:")
            << "</td><td>" << requested.message
            << "</td><td>" << m_parameters.message
            << "</td></tr>";
    }
    if (!requested.condition.isEmpty() || !m_parameters.condition.isEmpty()) {
        str << "<tr><td>" << Tr::tr("Condition:")
            << "</td><td>" << requested.condition
            << "</td><td>" << m_parameters.condition
            << "</td></tr>";
    }
    if (requested.ignoreCount || m_parameters.ignoreCount) {
        str << "<tr><td>" << Tr::tr("Ignore Count:") << "</td><td>";
        if (requested.ignoreCount)
            str << m_parameters.ignoreCount;
        str << "</td><td>";
        if (m_parameters.ignoreCount)
            str << m_parameters.ignoreCount;
        str << "</td></tr>";
    }
    if (requested.threadSpec >= 0 || m_parameters.threadSpec >= 0) {
        str << "<tr><td>" << Tr::tr("Thread Specification:")
            << "</td><td>";
        if (requested.threadSpec >= 0)
            str << requested.threadSpec;
        str << "</td><td>";
        if (m_parameters.threadSpec >= 0)
            str << m_parameters.threadSpec;
        str << "</td></tr>";
    }
    str  << "</table></body></html>";
    return rc;
}

void BreakHandler::setWatchpointAtAddress(quint64 address, unsigned size)
{
    BreakpointParameters params(WatchpointAtAddress);
    params.address = address;
    params.size = size;
    if (findWatchpoint(params)) {
        qDebug() << "WATCHPOINT EXISTS";
        //   removeBreakpoint(index);
        return;
    }
    BreakpointManager::createBreakpointForEngine(params, m_engine);
}

void BreakHandler::setWatchpointAtExpression(const QString &exp)
{
    BreakpointParameters params(WatchpointAtExpression);
    params.expression = exp;
    if (findWatchpoint(params)) {
        qDebug() << "WATCHPOINT EXISTS";
        //   removeBreakpoint(index);
        return;
    }
    BreakpointManager::createBreakpointForEngine(params, m_engine);
}

void BreakHandler::releaseAllBreakpoints()
{
    GlobalBreakpoints gbps;
    for (Breakpoint bp : breakpoints()) {
        bp->removeChildren();
        bp->destroyMarker();
        gbps.append(bp->globalBreakpoint());
    }
    clear();
    // Make now-unclaimed breakpoints globally visible again.
    for (GlobalBreakpoint gbp: std::as_const(gbps)) {
        if (gbp)
            gbp->updateMarker();
    }
}

QString BreakpointItem::msgWatchpointByExpressionTriggered(const QString &expr) const
{
    return Tr::tr("Internal data breakpoint %1 at %2 triggered.")
            .arg(responseId()).arg(expr);
}

QString BreakpointItem::msgWatchpointByExpressionTriggered(const QString &expr,
                                                           const QString &threadId) const
{
    return Tr::tr("Internal data breakpoint %1 at %2 in thread %3 triggered.")
            .arg(responseId()).arg(expr).arg(threadId);
}

QString BreakpointItem::msgWatchpointByAddressTriggered(quint64 address) const
{
    return Tr::tr("Internal data breakpoint %1 at 0x%2 triggered.")
            .arg(responseId()).arg(address, 0, 16);
}

QString BreakpointItem::msgWatchpointByAddressTriggered(quint64 address,
                                                        const QString &threadId) const
{
    return Tr::tr("Internal data breakpoint %1 at 0x%2 in thread %3 triggered.")
            .arg(responseId()).arg(address, 0, 16).arg(threadId);
}

QString BreakpointItem::msgBreakpointTriggered(const QString &threadId) const
{
    return Tr::tr("Stopped at breakpoint %1 in thread %2.")
            .arg(responseId()).arg(threadId);
}


QVariant SubBreakpointItem::data(int column, int role) const
{
    if (role == Qt::DecorationRole && column == 0) {
        if (params.tracepoint)
            return ProjectExplorer::Icons::TRACEPOINT.icon();
        return params.enabled ? Icons::BREAKPOINT.icon()
                              : Icons::BREAKPOINT_DISABLED.icon();
    }

    if (role == Qt::DisplayRole) {
        switch (column) {
        case BreakpointNumberColumn:
            return displayName.isEmpty() ? responseId : displayName;
        case BreakpointFunctionColumn:
            return params.functionName;
        case BreakpointAddressColumn:
            if (params.address)
                return QString::fromLatin1("0x%1").arg(params.address, 0, 16);
        }
    }
    return QVariant();
}


//
// GlobalBreakpointItem
//

// Ok to be not thread-safe. The order does not matter and only the gui
// produces authoritative ids.
static int currentId = 0;

GlobalBreakpointItem::GlobalBreakpointItem()
    : m_modelId(++currentId)
{
}

GlobalBreakpointItem::~GlobalBreakpointItem()
{
    delete m_marker;
    m_marker = nullptr;
}

QVariant GlobalBreakpointItem::data(int column, int role) const
{

    switch (column) {
        case BreakpointNumberColumn:
            if (role == Qt::DisplayRole) {
                if (auto engine = usingEngine())
                    return engine->runParameters().displayName();
                return QString("-");
            }
            if (role == Qt::DecorationRole)
                return icon();
            break;
        case BreakpointFunctionColumn:
            if (role == Qt::DisplayRole) {
                if (!m_params.functionName.isEmpty())
                    return m_params.functionName;
                if (m_params.type == BreakpointAtMain
                        || m_params.type == BreakpointAtThrow
                        || m_params.type == BreakpointAtCatch
                        || m_params.type == BreakpointAtFork
                        || m_params.type == BreakpointAtExec
                        //|| m_params.type == BreakpointAtVFork
                        || m_params.type == BreakpointAtSysCall)
                    return typeToString(m_params.type);
                if (m_params.type == WatchpointAtAddress)
                    return Tr::tr("Data at 0x%1").arg(m_params.address, 0, 16);
                if (m_params.type == WatchpointAtExpression)
                    return Tr::tr("Data at %1").arg(m_params.expression);
                return empty;
            }
            break;
        case BreakpointFileColumn:
            if (role == Qt::DisplayRole)
                return trimmedFileName(m_params.fileName);
            if (role == Qt::ToolTipRole)
                return m_params.fileName.toUserOutput();
            break;
        case BreakpointLineColumn:
            if (role == Qt::DisplayRole) {
                if (m_params.textPosition.line > 0)
                    return m_params.textPosition.line;
                return empty;
            }
            if (role == Qt::UserRole + 1)
                return m_params.textPosition.line;
            break;
        case BreakpointAddressColumn:
            if (role == Qt::DisplayRole) {
                const quint64 address = m_params.address;
                if (address)
                    return QString("0x%1").arg(address, 0, 16);
                return QVariant();
            }
            break;
        case BreakpointConditionColumn:
            if (role == Qt::DisplayRole)
                return m_params.condition;
            if (role == Qt::ToolTipRole)
                return Tr::tr("Breakpoint will only be hit if this condition is met.");
            if (role == Qt::UserRole + 1)
                return m_params.condition;
            break;
        case BreakpointIgnoreColumn:
            if (role == Qt::DisplayRole) {
                const int ignoreCount = m_params.ignoreCount;
                return ignoreCount ? QVariant(ignoreCount) : QVariant(QString());
            }
            if (role == Qt::ToolTipRole)
                return Tr::tr("Breakpoint will only be hit after being ignored so many times.");
            if (role == Qt::UserRole + 1)
                return m_params.ignoreCount;
            break;
        case BreakpointThreadsColumn:
            if (role == Qt::DisplayRole)
                return BreakHandler::displayFromThreadSpec(m_params.threadSpec);
            if (role == Qt::ToolTipRole)
                return Tr::tr("Breakpoint will only be hit in the specified thread(s).");
            if (role == Qt::UserRole + 1)
                return BreakHandler::displayFromThreadSpec(m_params.threadSpec);
            break;
    }

    if (role == Qt::ToolTipRole && settings().useToolTipsInBreakpointsView())
        return toolTip();

    return {};
}

QIcon GlobalBreakpointItem::icon() const
{
    // FIXME: This seems to be called on each cursor blink as soon as the
    // cursor is near a line with a breakpoint marker (+/- 2 lines or so).
    if (m_params.isTracepoint())
        return ProjectExplorer::Icons::TRACEPOINT.icon();
    if (m_params.type == WatchpointAtAddress)
        return Icons::WATCHPOINT.icon();
    if (m_params.type == WatchpointAtExpression)
        return Icons::WATCHPOINT.icon();
    if (!m_params.enabled)
        return Icons::BREAKPOINT_DISABLED.icon();

    return Icons::BREAKPOINT_PENDING.icon();
}

QPointer<DebuggerEngine> GlobalBreakpointItem::usingEngine() const
{
    for (QPointer<DebuggerEngine> engine : EngineManager::engines()) {
        for (Breakpoint bp : engine->breakHandler()->breakpoints()) {
            if (bp->globalBreakpoint() == this)
                return engine;
        }
    }
    return nullptr;
}

int GlobalBreakpointItem::modelId() const
{
    return m_modelId;
}

QString GlobalBreakpointItem::displayName() const
{
    return QString::number(m_modelId);
}

void GlobalBreakpointItem::deleteBreakpoint()
{
    for (QPointer<DebuggerEngine> engine : EngineManager::engines()) {
        BreakHandler *handler = engine->breakHandler();
        for (Breakpoint bp : handler->breakpoints()) {
            if (bp->globalBreakpoint() == this)
                handler->removeBreakpoint(bp);
        }
    }
    removeBreakpointFromModel();
}

void GlobalBreakpointItem::removeBreakpointFromModel()
{
    delete m_marker;
    m_marker = nullptr;
    theBreakpointManager->destroyItem(this);
}

void GlobalBreakpointItem::updateLineNumber(int lineNumber)
{
    if (m_params.textPosition.line == lineNumber)
        return;
    m_params.textPosition.line = lineNumber;
    update();
}

void GlobalBreakpointItem::updateFileName(const FilePath &fileName)
{
    if (m_params.fileName == fileName)
        return;
    m_params.fileName = fileName;
    update();
}

FilePath GlobalBreakpointItem::markerFileName() const
{
    // Some heuristics to find a "good" file name.
    if (m_params.fileName.exists())
        return m_params.fileName.absoluteFilePath();
    return m_params.fileName;
}

int GlobalBreakpointItem::markerLineNumber() const
{
    return m_params.textPosition.line;
}

void GlobalBreakpointItem::updateMarker()
{
    if (usingEngine() != nullptr) {
        // Don't show markers that are claimed by engines.
        // FIXME: Apart, perhaps, when the engine's reported location does not match?
        destroyMarker();
        return;
    }

    const int line = m_params.textPosition.line;
    if (m_marker) {
        if (m_params.fileName != m_marker->filePath())
            m_marker->updateFilePath(m_params.fileName);
        if (line != m_marker->lineNumber())
            m_marker->move(line);
    } else if (!m_params.fileName.isEmpty() && line > 0) {
        m_marker = new GlobalBreakpointMarker(this, m_params.fileName, line);
    }
}

void GlobalBreakpointItem::setEnabled(bool enabled, bool descend)
{
    if (m_params.enabled != enabled) {
        m_params.enabled = enabled;
        if (m_marker)
            m_marker->updateMarker();
        update();
    }

    if (descend) {
        for (QPointer<DebuggerEngine> engine : EngineManager::engines()) {
            BreakHandler *handler = engine->breakHandler();
            for (Breakpoint bp : handler->breakpoints()) {
                if (bp->globalBreakpoint() == this)
                    handler->requestBreakpointEnabling(bp, enabled);
            }
        }
    }
}

void GlobalBreakpointItem::setParameters(const BreakpointParameters &params)
{
    if (m_params != params) {
        m_params = params;
        if (m_marker)
            m_marker->updateMarker();
        update();
    }
}

void GlobalBreakpointItem::destroyMarker()
{
    delete m_marker;
    m_marker = nullptr;
}

QString GlobalBreakpointItem::toolTip() const
{
    QString rc;
    QTextStream str(&rc);
    str << "<html><body><b>" << Tr::tr("Unclaimed Breakpoint") << "</b>"
        << "<table>"
        //<< "<tr><td>" << Tr::tr("ID:") << "</td><td>" << m_id << "</td></tr>"
        << "<tr><td>" << Tr::tr("State:") << "</td><td>"
        << (m_params.enabled ? Tr::tr("Enabled") : Tr::tr("Disabled")) << "<tr><td>"
        << Tr::tr("Breakpoint Type:") << "</td><td>" << typeToString(m_params.type) << "</td></tr>";
    if (m_params.type == BreakpointByFunction) {
        str << "<tr><td>" << Tr::tr("Function Name:")
        << "</td><td>" << m_params.functionName
        << "</td></tr>";
    }
    if (m_params.type == BreakpointByFileAndLine) {
        str << "<tr><td>" << Tr::tr("File Name:")
            << "</td><td>" << m_params.fileName.toUserOutput()
            << "</td></tr>"
            << "<tr><td>" << Tr::tr("Line Number:")
            << "</td><td>" << m_params.textPosition.line;
    }
    if (m_params.type == BreakpointByFunction || m_params.type == BreakpointByFileAndLine) {
        str << "<tr><td>" << Tr::tr("Module:")
            << "</td><td>" << m_params.module
            << "</td></tr>";
    }
    str << "<tr><td>" << Tr::tr("Breakpoint Address:") << "</td><td>";
    formatAddress(str, m_params.address);
    str << "</td></tr>";
    if (!m_params.command.isEmpty())
        str << "<tr><td>" << Tr::tr("Command:") << "</td><td>" << m_params.command << "</td></tr>";
    if (!m_params.message.isEmpty())
        str << "<tr><td>" << Tr::tr("Message:") << "</td><td>" << m_params.message << "</td></tr>";
    if (!m_params.condition.isEmpty())
        str << "<tr><td>" << Tr::tr("Condition:") << "</td><td>" << m_params.condition << "</td></tr>";
    if (m_params.ignoreCount)
        str << "<tr><td>" << Tr::tr("Ignore Count:") << "</td><td>" << m_params.ignoreCount << "</td></tr>";
    if (m_params.threadSpec >= 0)
        str << "<tr><td>" << Tr::tr("Thread Specification:") << "</td><td>" << m_params.threadSpec << "</td></tr>";

    str  << "</table></body></html><hr>";
    return rc;
}

//
// BreakpointManager
//

BreakpointManager::BreakpointManager()
{
    theBreakpointManager = this;
    setHeader({Tr::tr("Debuggee"), Tr::tr("Function"), Tr::tr("File"), Tr::tr("Line"), Tr::tr("Address"),
               Tr::tr("Condition"), Tr::tr("Ignore"), Tr::tr("Threads")});
    connect(SessionManager::instance(), &SessionManager::sessionLoaded,
            this, &BreakpointManager::loadSessionData);
    connect(SessionManager::instance(), &SessionManager::aboutToSaveSession,
            this, &BreakpointManager::saveSessionData);
}

QAbstractItemModel *BreakpointManager::model()
{
    return theBreakpointManager;
}

const GlobalBreakpoints BreakpointManager::globalBreakpoints()
{
    GlobalBreakpoints items;
    theBreakpointManager->forItemsAtLevel<1>([&items](GlobalBreakpointItem *b) { items.append(b); });
    return items;
}

void BreakpointManager::claimBreakpointsForEngine(DebuggerEngine *engine)
{
    theBreakpointManager->forItemsAtLevel<1>([&](GlobalBreakpoint gbp) {
        engine->breakHandler()->tryClaimBreakpoint(gbp);
        gbp->updateMarker();
    });
}

GlobalBreakpoint BreakpointManager::createBreakpointHelper(const BreakpointParameters &params)
{
    GlobalBreakpoint gbp = new GlobalBreakpointItem;
    gbp->m_params = params;
    gbp->updateMarker();
    theBreakpointManager->rootItem()->appendChild(gbp);
    return gbp;
}

GlobalBreakpoint BreakpointManager::findBreakpointByIndex(const QModelIndex &index)
{
    return theBreakpointManager->itemForIndexAtLevel<1>(index);
}

GlobalBreakpoints BreakpointManager::findBreakpointsByIndex(const QList<QModelIndex> &list)
{
    QSet<GlobalBreakpoint> items;
    for (const QModelIndex &index : list) {
        if (GlobalBreakpoint gbp = findBreakpointByIndex(index))
            items.insert(gbp);
    }
    return Utils::toList(items);
}

GlobalBreakpoint BreakpointManager::createBreakpoint(const BreakpointParameters &params)
{
    GlobalBreakpoint gbp = createBreakpointHelper(params);
    for (QPointer<DebuggerEngine> engine : EngineManager::engines())
        engine->breakHandler()->tryClaimBreakpoint(gbp);
    return gbp;
}

void BreakpointManager::createBreakpointForEngine(const BreakpointParameters &params, DebuggerEngine *engine)
{
    GlobalBreakpoint gbp = createBreakpointHelper(params);
    engine->breakHandler()->tryClaimBreakpoint(gbp);
}

void BreakpointManager::setOrRemoveBreakpoint(const ContextData &location, const QString &tracePointMessage)
{
    QTC_ASSERT(location.isValid(), return);
    GlobalBreakpoint gbp = findBreakpointFromContext(location);

    if (gbp) {
        gbp->deleteBreakpoint();
    } else {
        BreakpointParameters data;
        if (location.type == LocationByFile) {
            data.type = BreakpointByFileAndLine;
            if (settings().breakpointsFullPathByDefault())
                data.pathUsage = BreakpointUseFullPath;
            data.tracepoint = !tracePointMessage.isEmpty();
            data.message = tracePointMessage;
            data.fileName = location.fileName;
            data.textPosition = location.textPosition;
        } else if (location.type == LocationByAddress) {
            data.type = BreakpointByAddress;
            data.tracepoint = !tracePointMessage.isEmpty();
            data.message = tracePointMessage;
            data.address = location.address;
        }
        BreakpointManager::createBreakpoint(data);
    }
}

void BreakpointManager::enableOrDisableBreakpoint(const ContextData &location)
{
    QTC_ASSERT(location.isValid(), return);
    if (GlobalBreakpoint gbp = findBreakpointFromContext(location))
        gbp->setEnabled(!gbp->isEnabled());
    else
        setOrRemoveBreakpoint(location);
}

GlobalBreakpoint BreakpointManager::findBreakpointFromContext(const ContextData &location)
{
    int matchLevel = 0;
    GlobalBreakpoint bestMatch;
    theBreakpointManager->forItemsAtLevel<1>([&](const GlobalBreakpoint &gbp) {
        if (location.type == LocationByFile) {
            if (gbp->m_params.isLocatedAt(location.fileName, location.textPosition.line, FilePath())) {
                matchLevel = 2;
                bestMatch = gbp;
            } else if (matchLevel < 2) {
                for (const QPointer<DebuggerEngine> &engine : EngineManager::engines()) {
                    BreakHandler *handler = engine->breakHandler();
                    for (Breakpoint bp : handler->breakpoints()) {
                        if (bp->globalBreakpoint() == gbp) {
                            if (bp->fileName() == location.fileName
                                    && bp->textPosition() == location.textPosition) {
                                matchLevel = 1;
                                bestMatch = gbp;
                            }
                        }
                    }
                }
            }
        } else if (location.type == LocationByAddress) {
            if (gbp->m_params.address == location.address) {
                matchLevel = 2;
                bestMatch = gbp;
            }
        }
    });

    return bestMatch;
}

void BreakpointManager::executeAddBreakpointDialog()
{
    BreakpointParameters data(BreakpointByFileAndLine);
    BreakpointParts parts = NoParts;
    BreakpointDialog dialog(~0, ICore::dialogParent());
    dialog.setWindowTitle(Tr::tr("Add Breakpoint"));
    if (dialog.showDialog(&data, &parts))
        BreakpointManager::createBreakpoint(data);
}

QVariant BreakpointManager::data(const QModelIndex &idx, int role) const
{
    if (role == BaseTreeView::ItemDelegateRole)
        return QVariant::fromValue(new LeftElideDelegate);

    return BreakpointManagerModel::data(idx, role);
}

bool BreakpointManager::setData(const QModelIndex &idx, const QVariant &value, int role)
{
    if (role == BaseTreeView::ItemActivatedRole) {
        if (GlobalBreakpoint bp = findBreakpointByIndex(idx))
            gotoLocation(bp);
        return true;
    }

    if (role == BaseTreeView::ItemViewEventRole) {
        ItemViewEvent ev = value.value<ItemViewEvent>();

        if (ev.as<QContextMenuEvent>())
            return contextMenuEvent(ev);

        if (auto kev = ev.as<QKeyEvent>(QEvent::KeyPress)) {
            if (kev->key() == Qt::Key_Delete || kev->key() == Qt::Key_Backspace) {
                QModelIndexList si = ev.currentOrSelectedRows();
                const GlobalBreakpoints gbps = findBreakpointsByIndex(si);
                for (GlobalBreakpoint gbp : gbps)
                    gbp->deleteBreakpoint();
//                int row = qMin(rowCount() - ids.size() - 1, idx.row());
//                setCurrentIndex(index(row, 0));   FIXME
                return true;
            }
            if (kev->key() == Qt::Key_Space) {
                const QModelIndexList selectedIds = ev.selectedRows();
                if (!selectedIds.isEmpty()) {
                    const GlobalBreakpoints gbps = findBreakpointsByIndex(selectedIds);
                    const bool isEnabled = gbps.isEmpty() || gbps.at(0)->isEnabled();
                    for (GlobalBreakpoint gbp : gbps)
                        gbp->setEnabled(!isEnabled);
//                    scheduleSynchronization();
                    return true;
                }
            }
        }

        if (ev.as<QMouseEvent>(QEvent::MouseButtonDblClick)) {
            if (GlobalBreakpoint gbp = findBreakpointByIndex(idx)) {
                if (idx.column() >= BreakpointAddressColumn)
                    editBreakpoints({gbp}, ev.view());
                else
                    gotoLocation(gbp);
            } else {
                BreakpointManager::executeAddBreakpointDialog();
            }
            return true;
        }
    }

    return false;
}

bool BreakpointManager::contextMenuEvent(const ItemViewEvent &ev)
{
    const QModelIndexList selectedIndices = ev.selectedRows();

    const GlobalBreakpoints selectedBreakpoints = findBreakpointsByIndex(selectedIndices);
    const bool breakpointsEnabled = selectedBreakpoints.isEmpty() || selectedBreakpoints.at(0)->isEnabled();

    auto menu = new QMenu;

    addAction(this, menu, Tr::tr("Add Breakpoint..."), true, &BreakpointManager::executeAddBreakpointDialog);

    addAction(this, menu, Tr::tr("Delete Selected Breakpoints"),
              !selectedBreakpoints.isEmpty(),
              [selectedBreakpoints] {
                for (GlobalBreakpoint gbp : selectedBreakpoints)
                    gbp->deleteBreakpoint();
             });

    addAction(this, menu, Tr::tr("Edit Selected Breakpoints..."),
              !selectedBreakpoints.isEmpty(),
              [this, selectedBreakpoints, ev] { editBreakpoints(selectedBreakpoints, ev.view()); });

    addAction(this, menu,
              selectedBreakpoints.size() > 1
                  ? breakpointsEnabled ? Tr::tr("Disable Selected Breakpoints") : Tr::tr("Enable Selected Breakpoints")
                  : breakpointsEnabled ? Tr::tr("Disable Breakpoint") : Tr::tr("Enable Breakpoint"),
              !selectedBreakpoints.isEmpty(),
              [selectedBreakpoints, breakpointsEnabled] {
                    for (GlobalBreakpoint gbp : selectedBreakpoints)
                        gbp->setEnabled(!breakpointsEnabled);
              }
    );

    QList<GlobalBreakpoint> enabledBreakpoints;
    QList<GlobalBreakpoint> disabledBreakpoints;
    forItemsAtLevel<1>([&enabledBreakpoints, &disabledBreakpoints](GlobalBreakpoint gbp) {
        if (gbp) {
            if (gbp->isEnabled())
                enabledBreakpoints.append(gbp);
            else
                disabledBreakpoints.append(gbp);
         }
    });

    addAction(this, menu, Tr::tr("Disable All Breakpoints"),
              !enabledBreakpoints.isEmpty(),
              [enabledBreakpoints] {
        for (GlobalBreakpoint gbp : enabledBreakpoints)
            gbp->setEnabled(false);
    });

    addAction(this, menu, Tr::tr("Enable All Breakpoints"),
              !disabledBreakpoints.isEmpty(),
              [disabledBreakpoints] {
        for (GlobalBreakpoint gbp : disabledBreakpoints)
            gbp->setEnabled(true);
    });

    menu->addSeparator();

    addAction(this, menu, Tr::tr("Delete All Breakpoints"),
              rowCount() > 0,
              &BreakpointManager::executeDeleteAllBreakpointsDialog);

    // Delete by file: Find breakpoints of the same file.
    GlobalBreakpoints breakpointsInFile;
    FilePath file;
    if (GlobalBreakpoint gbp = itemForIndexAtLevel<1>(ev.sourceModelIndex())) {
        file = gbp->markerFileName();
        if (!file.isEmpty()) {
            forItemsAtLevel<1>([file, &breakpointsInFile](const GlobalBreakpoint &gbp) {
                if (gbp->markerFileName() == file)
                    breakpointsInFile.append(gbp);
            });
        }
    }
    addAction(this, menu, Tr::tr("Delete Breakpoints of \"%1\"").arg(file.toUserOutput()),
              Tr::tr("Delete Breakpoints of File"),
              breakpointsInFile.size() > 1,
              [breakpointsInFile] {
                for (GlobalBreakpoint gbp : breakpointsInFile)
                    gbp->deleteBreakpoint();
              });

    menu->addSeparator();

    menu->addAction(settings().useToolTipsInBreakpointsView.action());

    addStandardActions(ev.view(), menu);

    menu->setAttribute(Qt::WA_DeleteOnClose);
    menu->popup(ev.globalPos());

    return true;
}

void BreakpointManager::gotoLocation(const GlobalBreakpoint &gbp) const
{
    QTC_ASSERT(gbp, return);
    if (IEditor *editor = EditorManager::openEditor(gbp->markerFileName()))
        editor->gotoLine(gbp->markerLineNumber(), 0);
}

void BreakpointManager::executeDeleteAllBreakpointsDialog()
{
    QMessageBox::StandardButton pressed
        = CheckableMessageBox::question(Tr::tr("Remove All Breakpoints"),
                                        Tr::tr("Are you sure you want to remove all breakpoints "
                                               "from all files in the current session?"),
                                        Key("RemoveAllBreakpoints"));
    if (pressed != QMessageBox::Yes)
        return;

    for (GlobalBreakpoint gbp : globalBreakpoints())
        gbp->deleteBreakpoint();
}

void BreakpointManager::editBreakpoint(const GlobalBreakpoint &gbp, QWidget *parent)
{
    QTC_ASSERT(gbp, return);
    BreakpointParts parts = NoParts;

    BreakpointParameters params = gbp->requestedParameters();
    BreakpointDialog dialog(~0, parent);
    if (!dialog.showDialog(&params, &parts))
        return;

    gbp->destroyMarker();
    gbp->deleteBreakpoint();
    BreakpointManager::createBreakpoint(params);
}

void BreakpointManager::editBreakpoints(const GlobalBreakpoints &gbps, QWidget *parent)
{
    QTC_ASSERT(!gbps.isEmpty(), return);

    GlobalBreakpoint gbp = gbps.at(0);

    if (gbps.size() == 1) {
        editBreakpoint(gbp, parent);
        return;
    }

    // This allows to change properties of multiple breakpoints at a time.
    QTC_ASSERT(gbp, return);
    BreakpointParameters params = gbp->requestedParameters();

    MultiBreakPointsDialog dialog(~0, parent);
    dialog.setCondition(params.condition);
    dialog.setIgnoreCount(params.ignoreCount);
    dialog.setThreadSpec(params.threadSpec);

    if (dialog.exec() == QDialog::Rejected)
        return;

    const QString newCondition = dialog.condition();
    const int newIgnoreCount = dialog.ignoreCount();
    const int newThreadSpec = dialog.threadSpec();

    for (GlobalBreakpoint gbp : gbps) {
        QTC_ASSERT(gbp, continue);
        BreakpointParameters newParams = gbp->requestedParameters();
        newParams.condition = newCondition;
        newParams.ignoreCount = newIgnoreCount;
        newParams.threadSpec = newThreadSpec;
        gbp->destroyMarker();
        gbp->deleteBreakpoint();
        BreakpointManager::createBreakpoint(newParams);
    }
}

void BreakpointManager::saveSessionData()
{
    QList<QVariant> list;
    theBreakpointManager->forItemsAtLevel<1>([&list](const GlobalBreakpoint &bp) {
        const BreakpointParameters &params = bp->m_params;
        QMap<QString, QVariant> map;
        if (params.type != BreakpointByFileAndLine)
            map.insert("type", params.type);
        if (!params.fileName.isEmpty())
            map.insert("filename", params.fileName.toSettings());
        if (params.textPosition.line)
            map.insert("linenumber", params.textPosition.line);
        if (!params.functionName.isEmpty())
            map.insert("funcname", params.functionName);
        if (params.address)
            map.insert("address", params.address);
        if (!params.condition.isEmpty())
            map.insert("condition", params.condition);
        if (params.ignoreCount)
            map.insert("ignorecount", params.ignoreCount);
        if (params.threadSpec >= 0)
            map.insert("threadspec", params.threadSpec);
        if (!params.enabled)
            map.insert("disabled", "1");
        if (params.oneShot)
            map.insert("oneshot", "1");
        if (params.pathUsage != BreakpointPathUsageEngineDefault)
            map.insert("usefullpath", QString::number(params.pathUsage));
        if (params.tracepoint)
            map.insert("tracepoint", "1");
        if (!params.module.isEmpty())
            map.insert("module", params.module);
        if (!params.command.isEmpty())
            map.insert("command", params.command);
        if (!params.expression.isEmpty())
            map.insert("expression", params.expression);
        if (!params.message.isEmpty())
            map.insert("message", params.message);
        list.append(map);
    });
    SessionManager::setValue("Breakpoints", list);
}

void BreakpointManager::loadSessionData()
{
    clear();

    const QVariant value = SessionManager::value("Breakpoints");
    const QList<QVariant> list = value.toList();
    for (const QVariant &var : list) {
        const QMap<QString, QVariant> map = var.toMap();
        BreakpointParameters params(BreakpointByFileAndLine);
        QVariant v = map.value("filename");
        if (v.isValid())
            params.fileName = FilePath::fromSettings(v);
        v = map.value("linenumber");
        if (v.isValid())
            params.textPosition.line = v.toString().toInt();
        v = map.value("condition");
        if (v.isValid())
            params.condition = v.toString();
        v = map.value("address");
        if (v.isValid())
            params.address = v.toString().toULongLong();
        v = map.value("ignorecount");
        if (v.isValid())
            params.ignoreCount = v.toString().toInt();
        v = map.value("threadspec");
        if (v.isValid())
            params.threadSpec = v.toString().toInt();
        v = map.value("funcname");
        if (v.isValid())
            params.functionName = v.toString();
        v = map.value("disabled");
        if (v.isValid())
            params.enabled = !v.toInt();
        v = map.value("oneshot");
        if (v.isValid())
            params.oneShot = v.toInt();
        v = map.value("usefullpath");
        if (v.isValid())
            params.pathUsage = static_cast<BreakpointPathUsage>(v.toInt());
        v = map.value("tracepoint");
        if (v.isValid())
            params.tracepoint = bool(v.toInt());
        v = map.value("type");
        if (v.isValid() && v.toInt() != UnknownBreakpointType)
            params.type = BreakpointType(v.toInt());
        v = map.value("module");
        if (v.isValid())
            params.module = v.toString();
        v = map.value("command");
        if (v.isValid())
            params.command = v.toString();
        v = map.value("expression");
        if (v.isValid())
            params.expression = v.toString();
        v = map.value("message");
        if (v.isValid())
            params.message = v.toString();
        if (params.isValid())
            BreakpointManager::createBreakpoint(params);
        else
            qWarning("Not restoring invalid breakpoint: %s", qPrintable(params.toString()));
    }
}

} // namespace Internal
} // namespace Debugger
