debuggerplugin.cpp

/**************************************************************************
**
** This file is part of Qt Creator
**
** Copyright (c) 2010 Nokia Corporation and/or its subsidiary(-ies).
**
** Contact: Nokia Corporation (qt-info@nokia.com)
**
** Commercial Usage
**
** Licensees holding valid Qt Commercial licenses may use this file in
** accordance with the Qt Commercial License Agreement provided with the
** Software or, alternatively, in accordance with the terms contained in
** a written agreement between you and Nokia.
**
** GNU Lesser General Public License Usage
**
** Alternatively, this file may be used under the terms of the GNU Lesser
** General Public License version 2.1 as published by the Free Software
** Foundation and appearing in the file LICENSE.LGPL included in the
** packaging of this file.  Please review the following information to
** ensure the GNU Lesser General Public License version 2.1 requirements
** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
**
** If you are unsure which license is appropriate for your use, please
** contact the sales department at http://qt.nokia.com/contact.
**
**************************************************************************/

#include "debuggerplugin.h"

#include "debuggeractions.h"
#include "debuggeragents.h"
#include "debuggerconstants.h"
#include "debuggerdialogs.h"
#include "debuggerengine.h"
#include "debuggermainwindow.h"
#include "debuggeroutputwindow.h"
#include "debuggerplugin.h"
#include "debuggerrunner.h"
#include "debuggerstringutils.h"
#include "debuggertooltip.h"
#include "debuggeruiswitcher.h"

#include "breakwindow.h"
#include "moduleswindow.h"
#include "registerwindow.h"
#include "snapshotwindow.h"
#include "stackwindow.h"
#include "sourcefileswindow.h"
#include "threadswindow.h"
#include "watchwindow.h"

//#include "sessiondata.h"
#include "watchutils.h"
#include "stackhandler.h"  // FIXME
#include "watchhandler.h"  // FIXME

#ifdef Q_OS_WIN
#  include "shared/peutils.h"
#endif


#include "ui_commonoptionspage.h"
#include "ui_dumperoptionpage.h"

#include <coreplugin/actionmanager/actionmanager.h>
#include <coreplugin/actionmanager/actioncontainer.h>
#include <coreplugin/actionmanager/command.h>
#include <coreplugin/basemode.h>
#include <coreplugin/coreconstants.h>
#include <coreplugin/dialogs/ioptionspage.h>
#include <coreplugin/editormanager/editormanager.h>
#include <coreplugin/findplaceholder.h>
#include <coreplugin/icore.h>
#include <coreplugin/icorelistener.h>
#include <coreplugin/manhattanstyle.h>
#include <coreplugin/messagemanager.h>
#include <coreplugin/minisplitter.h>
#include <coreplugin/modemanager.h>
#include <coreplugin/navigationwidget.h>
#include <coreplugin/outputpane.h>
#include <coreplugin/rightpane.h>
#include <coreplugin/uniqueidmanager.h>

#include <cplusplus/ExpressionUnderCursor.h>
#include <cplusplus/CppDocument.h>

#include <cppeditor/cppeditorconstants.h>
#include <cpptools/cppmodelmanagerinterface.h>

#include <extensionsystem/pluginmanager.h>

#include <projectexplorer/project.h>
#include <projectexplorer/projectexplorer.h>
#include <projectexplorer/projectexplorerconstants.h>
#include <projectexplorer/session.h>
#include <projectexplorer/toolchain.h>

#include <texteditor/basetexteditor.h>
#include <texteditor/basetextmark.h>
#include <texteditor/fontsettings.h>
#include <texteditor/itexteditor.h>
#include <texteditor/texteditorconstants.h>
#include <texteditor/texteditorsettings.h>

//#include <qt4projectmanager/qt4projectmanagerconstants.h>

#include <utils/qtcassert.h>
#include <utils/savedaction.h>
#include <utils/styledbar.h>

#include <QtCore/QCoreApplication>
#include <QtCore/QDebug>
#include <QtCore/QDir>
#include <QtCore/QFileInfo>
#include <QtCore/QObject>
#include <QtCore/QPoint>
#include <QtCore/QSettings>
#include <QtCore/QTextStream>
#include <QtCore/QTime>
#include <QtCore/QTimer>
#include <QtCore/QVariant>
#include <QtCore/QtPlugin>

#include <QtGui/QAbstractItemView>
#include <QtGui/QAction>
#include <QtGui/QApplication>
#include <QtGui/QComboBox>
#include <QtGui/QDockWidget>
#include <QtGui/QErrorMessage>
#include <QtGui/QFileDialog>
#include <QtGui/QHeaderView>
#include <QtGui/QLabel>
#include <QtGui/QLineEdit>
#include <QtGui/QMenu>
#include <QtGui/QMessageBox>
#include <QtGui/QPlainTextEdit>
#include <QtGui/QPushButton>
#include <QtGui/QStatusBar>
#include <QtGui/QTextBlock>
#include <QtGui/QTextCursor>
#include <QtGui/QToolButton>
#include <QtGui/QToolTip>
#include <QtGui/QTreeWidget>

#include <climits>

#define DEBUG_STATE 1
#ifdef DEBUG_STATE
//#   define STATE_DEBUG(s)
//    do { QString msg; QTextStream ts(&msg); ts << s;
//      showMessage(msg, LogDebug); } while (0)
#   define STATE_DEBUG(s) do { qDebug() << s; } while(0)
#else
#   define STATE_DEBUG(s)
#endif

// Note: the Debugger process itself and any helper processes like
// gdbserver, the trk client etc are referred to as 'Adapter',
// whereas the debugged process is referred to as 'Inferior'.
//
//              0 == DebuggerNotReady
//                          |
//                    EngineStarting
//                          |
//                    AdapterStarting --> AdapterStartFailed --> 0
//                          |
//                    AdapterStarted ------------------------------------.
//                          |                                            v
//                   InferiorStarting ----> InferiorStartFailed -------->|
//                          |                                            |
//         (core)           |     (attach) (term) (remote)               |
//      .-----------------<-|->------------------.                       |
//      |                   v                    |                       |
//  InferiorUnrunnable      | (plain)            |                       |
//      |                   | (trk)              |                       |
//      |                   |                    |                       |
//      |    .--> InferiorRunningRequested       |                       |
//      |    |              |                    |                       |
//      |    |       InferiorRunning             |                       |
//      |    |              |                    |                       |
//      |    |       InferiorStopping            |                       |
//      |    |              |                    |                       |
//      |    '------ InferiorStopped <-----------'                       |
//      |                   |                                            v
//      |          InferiorShuttingDown  ->  InferiorShutdownFailed ---->|
//      |                   |                                            |
//      |            InferiorShutDown                                    |
//      |                   |                                            |
//      '-------->  EngineShuttingDown  <--------------------------------'
//                          |
//                          0
//
// Allowed actions:
//    [R] :  Run
//    [C] :  Continue
//    [N] :  Step, Next

using namespace Core;
using namespace Debugger;
using namespace Debugger::Constants;
using namespace Debugger::Internal;
using namespace ProjectExplorer;
using namespace TextEditor;

namespace CC = Core::Constants;
namespace PE = ProjectExplorer::Constants;


namespace Debugger {
namespace Constants {

const char * const M_DEBUG_START_DEBUGGING = "QtCreator.Menu.Debug.StartDebugging";

const char * const STARTEXTERNAL        = "Debugger.StartExternal";
const char * const ATTACHEXTERNAL       = "Debugger.AttachExternal";
const char * const ATTACHCORE           = "Debugger.AttachCore";
const char * const ATTACHTCF            = "Debugger.AttachTcf";
const char * const ATTACHREMOTE         = "Debugger.AttachRemote";
const char * const DETACH               = "Debugger.Detach";

const char * const RUN_TO_LINE1         = "Debugger.RunToLine1";
const char * const RUN_TO_LINE2         = "Debugger.RunToLine2";
const char * const RUN_TO_FUNCTION      = "Debugger.RunToFunction";
const char * const JUMP_TO_LINE1        = "Debugger.JumpToLine1";
const char * const JUMP_TO_LINE2        = "Debugger.JumpToLine2";
const char * const RETURN_FROM_FUNCTION = "Debugger.ReturnFromFunction";
const char * const SNAPSHOT             = "Debugger.Snapshot";
const char * const TOGGLE_BREAK         = "Debugger.ToggleBreak";
const char * const BREAK_BY_FUNCTION    = "Debugger.BreakByFunction";
const char * const BREAK_AT_MAIN        = "Debugger.BreakAtMain";
const char * const ADD_TO_WATCH1        = "Debugger.AddToWatch1";
const char * const ADD_TO_WATCH2        = "Debugger.AddToWatch2";
const char * const OPERATE_BY_INSTRUCTION  = "Debugger.OperateByInstruction";
const char * const FRAME_UP             = "Debugger.FrameUp";
const char * const FRAME_DOWN           = "Debugger.FrameDown";

#ifdef Q_WS_MAC
const char * const INTERRUPT_KEY            = "Shift+F5";
const char * const RESET_KEY                = "Ctrl+Shift+F5";
const char * const STEP_KEY                 = "F7";
const char * const STEPOUT_KEY              = "Shift+F7";
const char * const NEXT_KEY                 = "F6";
const char * const REVERSE_KEY              = "";
const char * const RUN_TO_LINE_KEY          = "Shift+F8";
const char * const RUN_TO_FUNCTION_KEY      = "Ctrl+F6";
const char * const JUMP_TO_LINE_KEY         = "Alt+D,Alt+L";
const char * const TOGGLE_BREAK_KEY         = "F8";
const char * const BREAK_BY_FUNCTION_KEY    = "Alt+D,Alt+F";
const char * const BREAK_AT_MAIN_KEY        = "Alt+D,Alt+M";
const char * const ADD_TO_WATCH_KEY         = "Alt+D,Alt+W";
const char * const SNAPSHOT_KEY             = "Alt+D,Alt+S";
#else
const char * const INTERRUPT_KEY            = "Shift+F5";
const char * const RESET_KEY                = "Ctrl+Shift+F5";
const char * const STEP_KEY                 = "F11";
const char * const STEPOUT_KEY              = "Shift+F11";
const char * const NEXT_KEY                 = "F10";
const char * const REVERSE_KEY              = "F12";
const char * const RUN_TO_LINE_KEY          = "";
const char * const RUN_TO_FUNCTION_KEY      = "";
const char * const JUMP_TO_LINE_KEY         = "";
const char * const TOGGLE_BREAK_KEY         = "F9";
const char * const BREAK_BY_FUNCTION_KEY    = "";
const char * const BREAK_AT_MAIN_KEY        = "";
const char * const ADD_TO_WATCH_KEY         = "Ctrl+Alt+Q";
const char * const SNAPSHOT_KEY             = "Alt+D,Alt+S";
#endif

} // namespace Constants
} // namespace Debugger



static ProjectExplorer::SessionManager *sessionManager()
{
    return ProjectExplorer::ProjectExplorerPlugin::instance()->session();
}

static QSettings *settings()
{
    return ICore::instance()->settings();
}

static QToolButton *toolButton(QAction *action)
{
    QToolButton *button = new QToolButton;
    button->setDefaultAction(action);
    return button;
}

namespace Debugger {
namespace Internal {

// FIXME: Outdated?
// The createCdbEngine function takes a list of options pages it can add to.
// This allows for having a "enabled" toggle on the page independently
// of the engine. That's good for not enabling the related ActiveX control
// unnecessarily.

void addGdbOptionPages(QList<Core::IOptionsPage*> *opts);
void addScriptOptionPages(QList<Core::IOptionsPage*> *opts);
void addTcfOptionPages(QList<Core::IOptionsPage*> *opts);
#ifdef CDB_ENABLED
void addCdbOptionPages(QList<Core::IOptionsPage*> *opts);
#endif


struct AttachRemoteParameters
{
    AttachRemoteParameters() : attachPid(0), winCrashEvent(0) {}

    quint64 attachPid;
    QString attachCore;
    // Event handle for attaching to crashed Windows processes.
    quint64 winCrashEvent;
};


///////////////////////////////////////////////////////////////////////
//
// DebugMode
//
///////////////////////////////////////////////////////////////////////

class DebugMode : public Core::BaseMode
{
public:
    DebugMode(QObject *parent = 0) : BaseMode(parent)
    {
        setDisplayName(tr("Debug"));
        setId(MODE_DEBUG);
        setIcon(QIcon(":/fancyactionbar/images/mode_Debug.png"));
        setPriority(P_MODE_DEBUG);
    }

    ~DebugMode()
    {
        // Make sure the editor manager does not get deleted.
        EditorManager::instance()->setParent(0);
    }
};


///////////////////////////////////////////////////////////////////////
//
// DebuggerListener: Close the debugging session if running.
//
///////////////////////////////////////////////////////////////////////

class DebuggerListener : public Core::ICoreListener
{
public:
    DebuggerListener() {}
    virtual bool coreAboutToClose();
};


///////////////////////////////////////////////////////////////////////
//
// LocationMark
//
///////////////////////////////////////////////////////////////////////

// Used in "real" editors
class LocationMark : public TextEditor::BaseTextMark
{
public:
    LocationMark(const QString &fileName, int linenumber)
        : BaseTextMark(fileName, linenumber)
    {}

    QIcon icon() const { return DebuggerPlugin::instance()->locationMarkIcon(); }
    void updateLineNumber(int /*lineNumber*/) {}
    void updateBlock(const QTextBlock & /*block*/) {}
    void removedFromEditor() {}
};


///////////////////////////////////////////////////////////////////////
//
// CommonOptionsPage
//
///////////////////////////////////////////////////////////////////////

class CommonOptionsPage : public Core::IOptionsPage
{
public:
    CommonOptionsPage() {}

    // IOptionsPage
    QString id() const
        { return _(DEBUGGER_COMMON_SETTINGS_ID); }
    QString displayName() const
        { return QCoreApplication::translate("Debugger", DEBUGGER_COMMON_SETTINGS_NAME); }
    QString category() const
        { return _(DEBUGGER_SETTINGS_CATEGORY);  }
    QString displayCategory() const
        { return QCoreApplication::translate("Debugger", DEBUGGER_SETTINGS_TR_CATEGORY); }
    QIcon categoryIcon() const
        { return QIcon(QLatin1String(DEBUGGER_COMMON_SETTINGS_CATEGORY_ICON)); }

    QWidget *createPage(QWidget *parent);
    void apply() { m_group.apply(settings()); }
    void finish() { m_group.finish(); }
    virtual bool matches(const QString &s) const;

private:
    Ui::CommonOptionsPage m_ui;
    Utils::SavedActionSet m_group;
    QString m_searchKeywords;
};

QWidget *CommonOptionsPage::createPage(QWidget *parent)
{
    QWidget *w = new QWidget(parent);
    m_ui.setupUi(w);
    m_group.clear();

    m_group.insert(theDebuggerAction(SwitchLanguageAutomatically),
        m_ui.checkBoxChangeLanguageAutomatically);

    m_group.insert(theDebuggerAction(ListSourceFiles),
        m_ui.checkBoxListSourceFiles);
    m_group.insert(theDebuggerAction(UseAlternatingRowColors),
        m_ui.checkBoxUseAlternatingRowColors);
    m_group.insert(theDebuggerAction(UseToolTipsInMainEditor),
        m_ui.checkBoxUseToolTipsInMainEditor);
    m_group.insert(theDebuggerAction(AutoDerefPointers), 0);
    m_group.insert(theDebuggerAction(UseToolTipsInLocalsView), 0);
    m_group.insert(theDebuggerAction(UseToolTipsInBreakpointsView), 0);
    m_group.insert(theDebuggerAction(UseAddressInBreakpointsView), 0);
    m_group.insert(theDebuggerAction(UseAddressInStackView), 0);
    m_group.insert(theDebuggerAction(MaximalStackDepth),
        m_ui.spinBoxMaximalStackDepth);
    m_group.insert(theDebuggerAction(ShowStdNamespace), 0);
    m_group.insert(theDebuggerAction(ShowQtNamespace), 0);
    m_group.insert(theDebuggerAction(LogTimeStamps), 0);
    m_group.insert(theDebuggerAction(VerboseLog), 0);
    m_group.insert(theDebuggerAction(UsePreciseBreakpoints), 0);
    m_group.insert(theDebuggerAction(BreakOnThrow), 0);
    m_group.insert(theDebuggerAction(BreakOnCatch), 0);
#ifdef Q_OS_WIN
    Utils::SavedAction *registerAction = theDebuggerAction(RegisterForPostMortem);
    m_group.insert(registerAction,
        m_ui.checkBoxRegisterForPostMortem);
    connect(registerAction, SIGNAL(toggled(bool)),
            m_ui.checkBoxRegisterForPostMortem, SLOT(setChecked(bool)));
#endif

    if (m_searchKeywords.isEmpty()) {
        QTextStream(&m_searchKeywords) << ' '
                << m_ui.checkBoxChangeLanguageAutomatically->text()
                << m_ui.checkBoxListSourceFiles->text()
                << ' ' << m_ui.checkBoxUseAlternatingRowColors->text()
                << ' ' << m_ui.checkBoxUseToolTipsInMainEditor->text()
#ifdef Q_OS_WIN
                << ' ' << m_ui.checkBoxRegisterForPostMortem->text()
#endif
                << ' ' << m_ui.labelMaximalStackDepth->text();
        m_searchKeywords.remove(QLatin1Char('&'));
    }
#ifndef Q_OS_WIN
    m_ui.checkBoxRegisterForPostMortem->setVisible(false);
#endif
    return w;
}

bool CommonOptionsPage::matches(const QString &s) const
{
    return m_searchKeywords.contains(s, Qt::CaseInsensitive);
}

///////////////////////////////////////////////////////////////////////
//
// DebuggingHelperOptionPage
//
///////////////////////////////////////////////////////////////////////

static inline bool oxygenStyle()
{
    if (const ManhattanStyle *ms = qobject_cast<const ManhattanStyle *>(qApp->style()))
        return !qstrcmp("OxygenStyle", ms->baseStyle()->metaObject()->className());
    return false;
}

class DebuggingHelperOptionPage : public Core::IOptionsPage
{
public:
    DebuggingHelperOptionPage() {}

    // IOptionsPage
    QString id() const { return _("Z.DebuggingHelper"); }
    QString displayName() const { return tr("Debugging Helper"); }
    QString category() const { return _(DEBUGGER_SETTINGS_CATEGORY); }
    QString displayCategory() const { return QCoreApplication::translate("Debugger", DEBUGGER_SETTINGS_TR_CATEGORY); }
    QIcon categoryIcon() const { return QIcon(QLatin1String(DEBUGGER_COMMON_SETTINGS_CATEGORY_ICON)); }

    QWidget *createPage(QWidget *parent);
    void apply() { m_group.apply(settings()); }
    void finish() { m_group.finish(); }
    virtual bool matches(const QString &s) const;

private:
    Ui::DebuggingHelperOptionPage m_ui;
    Utils::SavedActionSet m_group;
    QString m_searchKeywords;
};

QWidget *DebuggingHelperOptionPage::createPage(QWidget *parent)
{
    QWidget *w = new QWidget(parent);
    m_ui.setupUi(w);

    m_ui.dumperLocationChooser->setExpectedKind(Utils::PathChooser::Command);
    m_ui.dumperLocationChooser->setPromptDialogTitle(tr("Choose DebuggingHelper Location"));
    m_ui.dumperLocationChooser->setInitialBrowsePathBackup(
        Core::ICore::instance()->resourcePath() + "../../lib");

    m_group.clear();
    m_group.insert(theDebuggerAction(UseDebuggingHelpers),
        m_ui.debuggingHelperGroupBox);
    m_group.insert(theDebuggerAction(UseCustomDebuggingHelperLocation),
        m_ui.customLocationGroupBox);
    // Suppress Oxygen style's giving flat group boxes bold titles.
    if (oxygenStyle())
        m_ui.customLocationGroupBox->setStyleSheet(_("QGroupBox::title { font: ; }"));

    m_group.insert(theDebuggerAction(CustomDebuggingHelperLocation),
        m_ui.dumperLocationChooser);

    m_group.insert(theDebuggerAction(UseCodeModel),
        m_ui.checkBoxUseCodeModel);

#ifdef QT_DEBUG
    m_group.insert(theDebuggerAction(DebugDebuggingHelpers),
        m_ui.checkBoxDebugDebuggingHelpers);
#else
    m_ui.checkBoxDebugDebuggingHelpers->hide();
#endif

#ifndef QT_DEBUG
#if 0
    cmd = am->registerAction(m_manager->m_dumpLogAction,
        DUMP_LOG, globalcontext);
    //cmd->setDefaultKeySequence(QKeySequence(tr("Ctrl+D,Ctrl+L")));
    cmd->setDefaultKeySequence(QKeySequence(tr("Ctrl+Shift+F11")));
    mdebug->addAction(cmd);
#endif
#endif

    if (m_searchKeywords.isEmpty()) {
        QTextStream(&m_searchKeywords)
                << ' ' << m_ui.debuggingHelperGroupBox->title()
                << ' ' << m_ui.customLocationGroupBox->title()
                << ' ' << m_ui.dumperLocationLabel->text()
                << ' ' << m_ui.checkBoxUseCodeModel->text()
                << ' ' << m_ui.checkBoxDebugDebuggingHelpers->text();
        m_searchKeywords.remove(QLatin1Char('&'));
    }
    return w;
}

bool DebuggingHelperOptionPage::matches(const QString &s) const
{
    return m_searchKeywords.contains(s, Qt::CaseInsensitive);
}


///////////////////////////////////////////////////////////////////////
//
// Argument parsing
//
///////////////////////////////////////////////////////////////////////

static QString msgParameterMissing(const QString &a)
{
    return DebuggerPlugin::tr("Option '%1' is missing the parameter.").arg(a);
}

static QString msgInvalidNumericParameter(const QString &a, const QString &number)
{
    return DebuggerPlugin::tr("The parameter '%1' of option '%2' is not a number.").arg(number, a);
}

static bool parseArgument(QStringList::const_iterator &it,
    const QStringList::const_iterator &cend,
    AttachRemoteParameters *attachRemoteParameters,
    unsigned *enabledEngines, QString *errorMessage)
{
    const QString &option = *it;
    // '-debug <pid>'
    if (*it == _("-debug")) {
        ++it;
        if (it == cend) {
            *errorMessage = msgParameterMissing(*it);
            return false;
        }
        bool ok;
        attachRemoteParameters->attachPid = it->toULongLong(&ok);
        if (!ok) {
            attachRemoteParameters->attachPid = 0;
            attachRemoteParameters->attachCore = *it;
        }
        return true;
    }
    // -wincrashevent <event-handle>. A handle used for
    // a handshake when attaching to a crashed Windows process.
    if (*it == _("-wincrashevent")) {
        ++it;
        if (it == cend) {
            *errorMessage = msgParameterMissing(*it);
            return false;
        }
        bool ok;
        attachRemoteParameters->winCrashEvent = it->toULongLong(&ok);
        if (!ok) {
            *errorMessage = msgInvalidNumericParameter(option, *it);
            return false;
        }
        return true;
    }
    // Engine disabling.
    if (option == _("-disable-cdb")) {
        *enabledEngines &= ~Debugger::CdbEngineType;
        return true;
    }
    if (option == _("-disable-gdb")) {
        *enabledEngines &= ~Debugger::GdbEngineType;
        return true;
    }
    if (option == _("-disable-qmldb")) {
        *enabledEngines &= ~Debugger::QmlEngineType;
        return true;
    }
    if (option == _("-disable-sdb")) {
        *enabledEngines &= ~Debugger::ScriptEngineType;
        return true;
    }
    if (option == _("-disable-tcf")) {
        *enabledEngines &= ~TcfEngineType;
        return true;
    }

    *errorMessage = DebuggerPlugin::tr("Invalid debugger option: %1").arg(option);
    return false;
}

static bool parseArguments(const QStringList &args,
   AttachRemoteParameters *attachRemoteParameters,
   unsigned *enabledEngines, QString *errorMessage)
{
    const QStringList::const_iterator cend = args.constEnd();
    for (QStringList::const_iterator it = args.constBegin(); it != cend; ++it)
        if (!parseArgument(it, cend, attachRemoteParameters, enabledEngines, errorMessage))
            return false;
    if (Debugger::Constants::Internal::debug)
        qDebug().nospace() << args << "engines=0x"
            << QString::number(*enabledEngines, 16)
            << " pid" << attachRemoteParameters->attachPid
            << " core" << attachRemoteParameters->attachCore << '\n';
    return true;
}


///////////////////////////////////////////////////////////////////////
//
// Misc
//
///////////////////////////////////////////////////////////////////////

static bool isDebuggable(Core::IEditor *editor)
{
    // Only blacklist Qml. Whitelisting would fail on C++ code in files
    // with strange names, more harm would be done this way.
    //Core::IFile *file = editor->file();
    //return !(file && file->mimeType() == "application/x-qml");

    // Nowadays, even Qml is debuggable.
    Q_UNUSED(editor);
    return true;
}

static TextEditor::ITextEditor *currentTextEditor()
{
    EditorManager *editorManager = EditorManager::instance();
    if (!editorManager)
        return 0;
    Core::IEditor *editor = editorManager->currentEditor();
    return qobject_cast<ITextEditor*>(editor);
}

static bool isCurrentProjectCppBased()
{
    Project *startupProject = ProjectExplorerPlugin::instance()->startupProject();
    if (!startupProject)
        return false;
    const QString id = startupProject->id();
    return id == _("GenericProjectManager.GenericProject")
        || id == _("CMakeProjectManager.CMakeProject")
        || id == _("Qt4ProjectManager.Qt4Project");
}


///////////////////////////////////////////////////////////////////////
//
// DummyEngine
//
///////////////////////////////////////////////////////////////////////

class DummyEngine : public DebuggerEngine
{
public:
    DummyEngine() : DebuggerEngine(DebuggerStartParameters()) {}
};


///////////////////////////////////////////////////////////////////////
//
// DebuggerPluginPrivate
//
///////////////////////////////////////////////////////////////////////

struct DebuggerActions
{
    QAction *continueAction;
    QAction *stopAction;
    QAction *resetAction; // FIXME: Should not be needed in a stable release
    QAction *stepAction;
    QAction *stepOutAction;
    QAction *runToLineAction1; // in the Debug menu
    QAction *runToLineAction2; // in the text editor context menu
    QAction *runToFunctionAction;
    QAction *jumpToLineAction1; // in the Debug menu
    QAction *jumpToLineAction2; // in the text editor context menu
    QAction *returnFromFunctionAction;
    QAction *nextAction;
    QAction *snapshotAction;
    QAction *watchAction1; // in the Debug menu
    QAction *watchAction2; // in the text editor context menu
    QAction *breakAction;
    QAction *sepAction;
    QAction *reverseDirectionAction;
    QAction *frameUpAction;
    QAction *frameDownAction;
};

} // namespace Internal

using namespace Debugger::Internal;

///////////////////////////////////////////////////////////////////////
//
// DebuggerPluginPrivate
//
///////////////////////////////////////////////////////////////////////

class DebuggerPluginPrivate : public QObject
{
    Q_OBJECT

public:
    explicit DebuggerPluginPrivate(DebuggerPlugin *plugin);

    bool initialize(const QStringList &arguments, QString *errorMessage);
    void notifyCurrentEngine(int role, const QVariant &value = QVariant());
    void connectEngine(DebuggerEngine *engine);
    void disconnectEngine() { connectEngine(m_dummySessionEngine); }

public slots:
    void updateWatchersHeader(int section, int, int newSize)
        { m_watchersWindow->header()->resizeSection(section, newSize); }

    void reloadSourceFiles()
        { notifyCurrentEngine(RequestReloadSourceFilesRole); }

    void sourceFilesDockToggled(bool on)
        { if (on) reloadSourceFiles(); }

    void reloadModules()
        { notifyCurrentEngine(RequestReloadModulesRole); }

    void modulesDockToggled(bool on)
        { if (on) reloadModules(); }

    void onAction();
    void onStatusTimeout();

    void setSimpleDockWidgetArrangement(const QString &activeLanguage);

    void editorOpened(Core::IEditor *editor);
    void editorAboutToClose(Core::IEditor *editor);
    void setBusyCursor(bool busy);
    void requestMark(TextEditor::ITextEditor *editor, int lineNumber);
    void showToolTip(TextEditor::ITextEditor *editor, const QPoint &pnt, int pos);
    void requestContextMenu(TextEditor::ITextEditor *editor,
        int lineNumber, QMenu *menu);

    void activatePreviousMode();
    void activateDebugMode();
    void toggleBreakpoint();
    void toggleBreakpoint(const QString &fileName, int lineNumber);
    void breakpointSetRemoveMarginActionTriggered();
    void breakpointEnableDisableMarginActionTriggered();
    void onModeChanged(Core::IMode *mode);
    void showSettingsDialog();

    void startExternalApplication();
    void startRemoteApplication();
    void attachExternalApplication();
    void attachExternalApplication
        (qint64 pid, const QString &binary, const QString &crashParameter);
    void attachCore();
    void attachCore(const QString &core, const QString &exeFileName);
    void attachCmdLine();
    void attachRemoteTcf();