Carla/source/modules/juce_gui_basics/native/juce_linux_Windowing.cpp

/*
  ==============================================================================

   This file is part of the JUCE 7 technical preview.
   Copyright (c) 2022 - Raw Material Software Limited

   You may use this code under the terms of the GPL v3
   (see www.gnu.org/licenses).

   For the technical preview this file cannot be licensed commercially.

   JUCE IS PROVIDED "AS IS" WITHOUT ANY WARRANTY, AND ALL WARRANTIES, WHETHER
   EXPRESSED OR IMPLIED, INCLUDING MERCHANTABILITY AND FITNESS FOR PURPOSE, ARE
   DISCLAIMED.

  ==============================================================================
*/

namespace juce
{

//==============================================================================
static int numAlwaysOnTopPeers = 0;
bool juce_areThereAnyAlwaysOnTopWindows()  { return numAlwaysOnTopPeers > 0; }

//==============================================================================
class LinuxComponentPeer  : public ComponentPeer,
                            private XWindowSystemUtilities::XSettings::Listener
{
public:
    LinuxComponentPeer (Component& comp, int windowStyleFlags, ::Window parentToAddTo)
        : ComponentPeer (comp, windowStyleFlags),
          isAlwaysOnTop (comp.isAlwaysOnTop())
    {
        // it's dangerous to create a window on a thread other than the message thread.
        JUCE_ASSERT_MESSAGE_MANAGER_IS_LOCKED

        const auto* instance = XWindowSystem::getInstance();

        if (! instance->isX11Available())
            return;

        if (isAlwaysOnTop)
            ++numAlwaysOnTopPeers;

        repainter = std::make_unique<LinuxRepaintManager> (*this);

        windowH = instance->createWindow (parentToAddTo, this);
        parentWindow = parentToAddTo;

        setTitle (component.getName());

        if (auto* xSettings = instance->getXSettings())
            xSettings->addListener (this);

        getNativeRealtimeModifiers = []() -> ModifierKeys { return XWindowSystem::getInstance()->getNativeRealtimeModifiers(); };
    }

    ~LinuxComponentPeer() override
    {
        // it's dangerous to delete a window on a thread other than the message thread.
        JUCE_ASSERT_MESSAGE_MANAGER_IS_LOCKED

        auto* instance = XWindowSystem::getInstance();

        repainter = nullptr;
        instance->destroyWindow (windowH);

        if (auto* xSettings = instance->getXSettings())
            xSettings->removeListener (this);

        if (isAlwaysOnTop)
            --numAlwaysOnTopPeers;
    }

    ::Window getWindowHandle() const noexcept
    {
        return windowH;
    }

    //==============================================================================
    void* getNativeHandle() const override
    {
        return reinterpret_cast<void*> (getWindowHandle());
    }

    //==============================================================================
    void setBounds (const Rectangle<int>& newBounds, bool isNowFullScreen) override
    {
        const auto correctedNewBounds = newBounds.withSize (jmax (1, newBounds.getWidth()),
                                                            jmax (1, newBounds.getHeight()));

        if (bounds == correctedNewBounds && fullScreen == isNowFullScreen)
            return;

        bounds = correctedNewBounds;

        updateScaleFactorFromNewBounds (bounds, false);

        auto physicalBounds = parentWindow == 0 ? Desktop::getInstance().getDisplays().logicalToPhysical (bounds)
                                                : bounds * currentScaleFactor;

        WeakReference<Component> deletionChecker (&component);

        XWindowSystem::getInstance()->setBounds (windowH, physicalBounds, isNowFullScreen);

        fullScreen = isNowFullScreen;

        if (deletionChecker != nullptr)
        {
            updateBorderSize();
            handleMovedOrResized();
        }
    }

    Point<int> getScreenPosition (bool physical) const
    {
        auto physicalParentPosition = XWindowSystem::getInstance()->getPhysicalParentScreenPosition();
        auto parentPosition = parentWindow == 0 ? Desktop::getInstance().getDisplays().physicalToLogical (physicalParentPosition)
                                                : physicalParentPosition / currentScaleFactor;

        auto screenBounds = parentWindow == 0 ? bounds
                                              : bounds.translated (parentPosition.x, parentPosition.y);

        if (physical)
            return parentWindow == 0 ? Desktop::getInstance().getDisplays().logicalToPhysical (screenBounds.getTopLeft())
                                     : screenBounds.getTopLeft() * currentScaleFactor;

        return screenBounds.getTopLeft();
    }

    Rectangle<int> getBounds() const override
    {
        return bounds;
    }

    OptionalBorderSize getFrameSizeIfPresent() const override
    {
        return windowBorder;
    }

    BorderSize<int> getFrameSize() const override
    {
        const auto optionalBorderSize = getFrameSizeIfPresent();
        return optionalBorderSize ? (*optionalBorderSize) : BorderSize<int>();
    }

    Point<float> localToGlobal (Point<float> relativePosition) override
    {
        return localToGlobal (*this, relativePosition);
    }

    Point<float> globalToLocal (Point<float> screenPosition) override
    {
        return globalToLocal (*this, screenPosition);
    }

    using ComponentPeer::localToGlobal;
    using ComponentPeer::globalToLocal;

    //==============================================================================
    StringArray getAvailableRenderingEngines() override
    {
        return { "Software Renderer" };
    }

    void setVisible (bool shouldBeVisible) override
    {
        XWindowSystem::getInstance()->setVisible (windowH, shouldBeVisible);
    }

    void setTitle (const String& title) override
    {
        XWindowSystem::getInstance()->setTitle (windowH, title);
    }

    void setMinimised (bool shouldBeMinimised) override
    {
        if (shouldBeMinimised)
            XWindowSystem::getInstance()->setMinimised (windowH, shouldBeMinimised);
        else
            setVisible (true);
    }

    bool isMinimised() const override
    {
        return XWindowSystem::getInstance()->isMinimised (windowH);
    }

    void setFullScreen (bool shouldBeFullScreen) override
    {
        auto r = lastNonFullscreenBounds; // (get a copy of this before de-minimising)

        setMinimised (false);

        if (fullScreen != shouldBeFullScreen)
        {
            const auto usingNativeTitleBar = ((styleFlags & windowHasTitleBar) != 0);

            if (usingNativeTitleBar)
                XWindowSystem::getInstance()->setMaximised (windowH, shouldBeFullScreen);

            if (shouldBeFullScreen)
                r = usingNativeTitleBar ? XWindowSystem::getInstance()->getWindowBounds (windowH, parentWindow)
                                        : Desktop::getInstance().getDisplays().getDisplayForRect (bounds)->userArea;

            if (! r.isEmpty())
                setBounds (ScalingHelpers::scaledScreenPosToUnscaled (component, r), shouldBeFullScreen);

            component.repaint();
        }
    }

    bool isFullScreen() const override
    {
        return fullScreen;
    }

    bool contains (Point<int> localPos, bool trueIfInAChildWindow) const override
    {
        if (! bounds.withZeroOrigin().contains (localPos))
            return false;

        for (int i = Desktop::getInstance().getNumComponents(); --i >= 0;)
        {
            auto* c = Desktop::getInstance().getComponent (i);

            if (c == &component)
                break;

            if (! c->isVisible())
                continue;

            auto* otherPeer = c->getPeer();
            jassert (otherPeer == nullptr || dynamic_cast<LinuxComponentPeer*> (c->getPeer()) != nullptr);

            if (auto* peer = static_cast<LinuxComponentPeer*> (otherPeer))
                if (peer->contains (globalToLocal (*peer, localToGlobal (*this, localPos.toFloat())).roundToInt(), true))
                    return false;
        }

        if (trueIfInAChildWindow)
            return true;

        return XWindowSystem::getInstance()->contains (windowH, localPos * currentScaleFactor);
    }

    void toFront (bool makeActive) override
    {
        if (makeActive)
        {
            setVisible (true);
            grabFocus();
        }

        XWindowSystem::getInstance()->toFront (windowH, makeActive);
        handleBroughtToFront();
    }

    void toBehind (ComponentPeer* other) override
    {
        if (auto* otherPeer = dynamic_cast<LinuxComponentPeer*> (other))
        {
            if (otherPeer->styleFlags & windowIsTemporary)
                return;

            setMinimised (false);
            XWindowSystem::getInstance()->toBehind (windowH, otherPeer->windowH);
        }
        else
        {
            jassertfalse; // wrong type of window?
        }
    }

    bool isFocused() const override
    {
        return XWindowSystem::getInstance()->isFocused (windowH);
    }

    void grabFocus() override
    {
        if (XWindowSystem::getInstance()->grabFocus (windowH))
            isActiveApplication = true;
    }

    //==============================================================================
    void repaint (const Rectangle<int>& area) override
    {
        if (repainter != nullptr)
            repainter->repaint (area.getIntersection (bounds.withZeroOrigin()));
    }

    void performAnyPendingRepaintsNow() override
    {
        if (repainter != nullptr)
            repainter->performAnyPendingRepaintsNow();
    }

    void setIcon (const Image& newIcon) override
    {
        XWindowSystem::getInstance()->setIcon (windowH, newIcon);
    }

    double getPlatformScaleFactor() const noexcept override
    {
        return currentScaleFactor;
    }

    void setAlpha (float) override                                  {}
    bool setAlwaysOnTop (bool) override                             { return false; }
    void textInputRequired (Point<int>, TextInputTarget&) override  {}

    //==============================================================================
    void addOpenGLRepaintListener (Component* dummy)
    {
        if (dummy != nullptr)
            glRepaintListeners.addIfNotAlreadyThere (dummy);
    }

    void removeOpenGLRepaintListener (Component* dummy)
    {
        if (dummy != nullptr)
            glRepaintListeners.removeAllInstancesOf (dummy);
    }

    void repaintOpenGLContexts()
    {
        for (auto* c : glRepaintListeners)
            c->handleCommandMessage (0);
    }

    //==============================================================================
    ::Window getParentWindow()                         { return parentWindow; }
    void setParentWindow (::Window newParent)          { parentWindow = newParent; }

    //==============================================================================
    bool isConstrainedNativeWindow() const
    {
        return constrainer != nullptr
            && (styleFlags & (windowHasTitleBar | windowIsResizable)) == (windowHasTitleBar | windowIsResizable)
            && ! isKioskMode();
    }

    void updateWindowBounds()
    {
        if (windowH == 0)
        {
            jassertfalse;
            return;
        }

        if (isConstrainedNativeWindow())
            XWindowSystem::getInstance()->updateConstraints (windowH);

        auto physicalBounds = XWindowSystem::getInstance()->getWindowBounds (windowH, parentWindow);

        updateScaleFactorFromNewBounds (physicalBounds, true);

        bounds = parentWindow == 0 ? Desktop::getInstance().getDisplays().physicalToLogical (physicalBounds)
                                   : physicalBounds / currentScaleFactor;
    }

    void updateBorderSize()
    {
        if ((styleFlags & windowHasTitleBar) == 0)
        {
            windowBorder = ComponentPeer::OptionalBorderSize { BorderSize<int>() };
        }
        else if (! windowBorder
                 || ((*windowBorder).getTopAndBottom() == 0 && (*windowBorder).getLeftAndRight() == 0))
        {
            windowBorder = XWindowSystem::getInstance()->getBorderSize (windowH);
        }
    }

    //==============================================================================
    static bool isActiveApplication;
    bool focused = false;

private:
    //==============================================================================
    class LinuxRepaintManager   : public Timer
    {
    public:
        LinuxRepaintManager (LinuxComponentPeer& p)
            : peer (p),
              isSemiTransparentWindow ((peer.getStyleFlags() & ComponentPeer::windowIsSemiTransparent) != 0)
        {
        }

        void timerCallback() override
        {
            XWindowSystem::getInstance()->processPendingPaintsForWindow (peer.windowH);

            if (XWindowSystem::getInstance()->getNumPaintsPendingForWindow (peer.windowH) > 0)
                return;

            if (! regionsNeedingRepaint.isEmpty())
            {
                stopTimer();
                performAnyPendingRepaintsNow();
            }
            else if (Time::getApproximateMillisecondCounter() > lastTimeImageUsed + 3000)
            {
                stopTimer();
                image = Image();
            }
        }

        void repaint (Rectangle<int> area)
        {
            if (! isTimerRunning())
                startTimer (repaintTimerPeriod);

            regionsNeedingRepaint.add (area * peer.currentScaleFactor);
        }

        void performAnyPendingRepaintsNow()
        {
            if (XWindowSystem::getInstance()->getNumPaintsPendingForWindow (peer.windowH) > 0)
            {
                startTimer (repaintTimerPeriod);
                return;
            }

            auto originalRepaintRegion = regionsNeedingRepaint;
            regionsNeedingRepaint.clear();
            auto totalArea = originalRepaintRegion.getBounds();

            if (! totalArea.isEmpty())
            {
                if (image.isNull() || image.getWidth() < totalArea.getWidth()
                     || image.getHeight() < totalArea.getHeight())
                {
                    image = XWindowSystem::getInstance()->createImage (isSemiTransparentWindow,
                                                                       totalArea.getWidth(), totalArea.getHeight(),
                                                                       useARGBImagesForRendering);
                }

                startTimer (repaintTimerPeriod);

                RectangleList<int> adjustedList (originalRepaintRegion);
                adjustedList.offsetAll (-totalArea.getX(), -totalArea.getY());

                if (XWindowSystem::getInstance()->canUseARGBImages())
                    for (auto& i : originalRepaintRegion)
                        image.clear (i - totalArea.getPosition());

                {
                    auto context = peer.getComponent().getLookAndFeel()
                                     .createGraphicsContext (image, -totalArea.getPosition(), adjustedList);

                    context->addTransform (AffineTransform::scale ((float) peer.currentScaleFactor));
                    peer.handlePaint (*context);
                }

                for (auto& i : originalRepaintRegion)
                   XWindowSystem::getInstance()->blitToWindow (peer.windowH, image, i, totalArea);
            }

            lastTimeImageUsed = Time::getApproximateMillisecondCounter();
            startTimer (repaintTimerPeriod);
        }

    private:
        enum { repaintTimerPeriod = 1000 / 100 };

        LinuxComponentPeer& peer;
        const bool isSemiTransparentWindow;
        Image image;
        uint32 lastTimeImageUsed = 0;
        RectangleList<int> regionsNeedingRepaint;

        bool useARGBImagesForRendering = XWindowSystem::getInstance()->canUseARGBImages();

        JUCE_DECLARE_NON_COPYABLE (LinuxRepaintManager)
    };

    //==============================================================================
    template <typename This>
    static Point<float> localToGlobal (This& t, Point<float> relativePosition)
    {
        return relativePosition + t.getScreenPosition (false).toFloat();
    }

    template <typename This>
    static Point<float> globalToLocal (This& t, Point<float> screenPosition)
    {
        return screenPosition - t.getScreenPosition (false).toFloat();
    }

    //==============================================================================
    void settingChanged (const XWindowSystemUtilities::XSetting& settingThatHasChanged) override
    {
        static StringArray possibleSettings { XWindowSystem::getWindowScalingFactorSettingName(),
                                              "Gdk/UnscaledDPI",
                                              "Xft/DPI" };

        if (possibleSettings.contains (settingThatHasChanged.name))
            forceDisplayUpdate();
    }

    void updateScaleFactorFromNewBounds (const Rectangle<int>& newBounds, bool isPhysical)
    {
        Point<int> translation = (parentWindow != 0 ? getScreenPosition (isPhysical) : Point<int>());
        const auto& desktop = Desktop::getInstance();

        if (auto* display = desktop.getDisplays().getDisplayForRect (newBounds.translated (translation.x, translation.y),
                                                                     isPhysical))
        {
            auto newScaleFactor = display->scale / desktop.getGlobalScaleFactor();

            if (! approximatelyEqual (newScaleFactor, currentScaleFactor))
            {
                currentScaleFactor = newScaleFactor;
                scaleFactorListeners.call ([&] (ScaleFactorListener& l) { l.nativeScaleFactorChanged (currentScaleFactor); });
            }
        }
    }

    //==============================================================================
    std::unique_ptr<LinuxRepaintManager> repainter;

    ::Window windowH = {}, parentWindow = {};
    Rectangle<int> bounds;
    ComponentPeer::OptionalBorderSize windowBorder;
    bool fullScreen = false, isAlwaysOnTop = false;
    double currentScaleFactor = 1.0;
    Array<Component*> glRepaintListeners;

    //==============================================================================
    JUCE_DECLARE_NON_COPYABLE_WITH_LEAK_DETECTOR (LinuxComponentPeer)
};

bool LinuxComponentPeer::isActiveApplication = false;

//==============================================================================
ComponentPeer* Component::createNewPeer (int styleFlags, void* nativeWindowToAttachTo)
{
    return new LinuxComponentPeer (*this, styleFlags, (::Window) nativeWindowToAttachTo);
}

//==============================================================================
JUCE_API bool JUCE_CALLTYPE Process::isForegroundProcess()    { return LinuxComponentPeer::isActiveApplication; }

JUCE_API void JUCE_CALLTYPE Process::makeForegroundProcess()  {}
JUCE_API void JUCE_CALLTYPE Process::hide()                   {}

//==============================================================================
void Desktop::setKioskComponent (Component* comp, bool enableOrDisable, bool)
{
    if (enableOrDisable)
        comp->setBounds (getDisplays().getDisplayForRect (comp->getScreenBounds())->totalArea);
}

void Displays::findDisplays (float masterScale)
{
    if (XWindowSystem::getInstance()->getDisplay() != nullptr)
    {
        displays = XWindowSystem::getInstance()->findDisplays (masterScale);

        if (! displays.isEmpty())
            updateToLogical();
    }
}

bool Desktop::canUseSemiTransparentWindows() noexcept
{
    return XWindowSystem::getInstance()->canUseSemiTransparentWindows();
}

class Desktop::NativeDarkModeChangeDetectorImpl  : private XWindowSystemUtilities::XSettings::Listener
{
public:
    NativeDarkModeChangeDetectorImpl()
    {
        const auto* windowSystem = XWindowSystem::getInstance();

        if (auto* xSettings = windowSystem->getXSettings())
            xSettings->addListener (this);

        darkModeEnabled = windowSystem->isDarkModeActive();
    }

    ~NativeDarkModeChangeDetectorImpl() override
    {
        if (auto* windowSystem = XWindowSystem::getInstanceWithoutCreating())
            if (auto* xSettings = windowSystem->getXSettings())
                xSettings->removeListener (this);
    }

    bool isDarkModeEnabled() const noexcept  { return darkModeEnabled; }

private:
    void settingChanged (const XWindowSystemUtilities::XSetting& settingThatHasChanged) override
    {
        if (settingThatHasChanged.name == XWindowSystem::getThemeNameSettingName())
        {
            const auto wasDarkModeEnabled = std::exchange (darkModeEnabled, XWindowSystem::getInstance()->isDarkModeActive());

            if (darkModeEnabled != wasDarkModeEnabled)
                Desktop::getInstance().darkModeChanged();
        }
    }

    bool darkModeEnabled = false;

    JUCE_DECLARE_NON_COPYABLE_WITH_LEAK_DETECTOR (NativeDarkModeChangeDetectorImpl)
};

std::unique_ptr<Desktop::NativeDarkModeChangeDetectorImpl> Desktop::createNativeDarkModeChangeDetectorImpl()
{
    return std::make_unique<NativeDarkModeChangeDetectorImpl>();
}

bool Desktop::isDarkModeActive() const
{
    return nativeDarkModeChangeDetectorImpl->isDarkModeEnabled();
}

static bool screenSaverAllowed = true;

void Desktop::setScreenSaverEnabled (bool isEnabled)
{
    if (screenSaverAllowed != isEnabled)
    {
        screenSaverAllowed = isEnabled;
        XWindowSystem::getInstance()->setScreenSaverEnabled (screenSaverAllowed);
    }
}

bool Desktop::isScreenSaverEnabled()
{
    return screenSaverAllowed;
}

double Desktop::getDefaultMasterScale()                             { return 1.0; }

Desktop::DisplayOrientation Desktop::getCurrentOrientation() const  { return upright; }
void Desktop::allowedOrientationsChanged()                          {}

//==============================================================================
bool MouseInputSource::SourceList::addSource()
{
    if (sources.isEmpty())
    {
        addSource (0, MouseInputSource::InputSourceType::mouse);
        return true;
    }

    return false;
}

bool MouseInputSource::SourceList::canUseTouch()
{
    return false;
}

Point<float> MouseInputSource::getCurrentRawMousePosition()
{
    return Desktop::getInstance().getDisplays().physicalToLogical (XWindowSystem::getInstance()->getCurrentMousePosition());
}

void MouseInputSource::setRawMousePosition (Point<float> newPosition)
{
    XWindowSystem::getInstance()->setMousePosition (Desktop::getInstance().getDisplays().logicalToPhysical (newPosition));
}

//==============================================================================
class MouseCursor::PlatformSpecificHandle
{
public:
    explicit PlatformSpecificHandle (const MouseCursor::StandardCursorType type)
        : cursorHandle (makeHandle (type)) {}

    explicit PlatformSpecificHandle (const CustomMouseCursorInfo& info)
        : cursorHandle (makeHandle (info)) {}

    ~PlatformSpecificHandle()
    {
        if (cursorHandle != Cursor{})
            XWindowSystem::getInstance()->deleteMouseCursor (cursorHandle);
    }

    static void showInWindow (PlatformSpecificHandle* handle, ComponentPeer* peer)
    {
        const auto cursor = handle != nullptr ? handle->cursorHandle : Cursor{};

        if (peer != nullptr)
            XWindowSystem::getInstance()->showCursor ((::Window) peer->getNativeHandle(), cursor);
    }

private:
    static Cursor makeHandle (const CustomMouseCursorInfo& info)
    {
        const auto image = info.image.getImage();
        return XWindowSystem::getInstance()->createCustomMouseCursorInfo (image.rescaled ((int) (image.getWidth()  / info.image.getScale()),
                                                                                          (int) (image.getHeight() / info.image.getScale())), info.hotspot);
    }

    static Cursor makeHandle (MouseCursor::StandardCursorType type)
    {
        return XWindowSystem::getInstance()->createStandardMouseCursor (type);
    }

    Cursor cursorHandle;

    //==============================================================================
    JUCE_DECLARE_NON_COPYABLE (PlatformSpecificHandle)
    JUCE_DECLARE_NON_MOVEABLE (PlatformSpecificHandle)
};

//==============================================================================
static LinuxComponentPeer* getPeerForDragEvent (Component* sourceComp)
{
    if (sourceComp == nullptr)
        if (auto* draggingSource = Desktop::getInstance().getDraggingMouseSource (0))
            sourceComp = draggingSource->getComponentUnderMouse();

    if (sourceComp != nullptr)
        if (auto* lp = dynamic_cast<LinuxComponentPeer*> (sourceComp->getPeer()))
            return lp;

    jassertfalse;  // This method must be called in response to a component's mouseDown or mouseDrag event!
    return nullptr;
}

bool DragAndDropContainer::performExternalDragDropOfFiles (const StringArray& files, bool canMoveFiles,
                                                           Component* sourceComp, std::function<void()> callback)
{
    if (files.isEmpty())
        return false;

    if (auto* peer = getPeerForDragEvent (sourceComp))
        return XWindowSystem::getInstance()->externalDragFileInit (peer, files, canMoveFiles, std::move (callback));

    // This method must be called in response to a component's mouseDown or mouseDrag event!
    jassertfalse;
    return false;
}

bool DragAndDropContainer::performExternalDragDropOfText (const String& text, Component* sourceComp,
                                                          std::function<void()> callback)
{
    if (text.isEmpty())
        return false;

    if (auto* peer = getPeerForDragEvent (sourceComp))
        return XWindowSystem::getInstance()->externalDragTextInit (peer, text, std::move (callback));

    // This method must be called in response to a component's mouseDown or mouseDrag event!
    jassertfalse;
    return false;
}

//==============================================================================
void SystemClipboard::copyTextToClipboard (const String& clipText)
{
    XWindowSystem::getInstance()->copyTextToClipboard (clipText);
}

String SystemClipboard::getTextFromClipboard()
{
    return XWindowSystem::getInstance()->getTextFromClipboard();
}

//==============================================================================
bool KeyPress::isKeyCurrentlyDown (int keyCode)
{
    return XWindowSystem::getInstance()->isKeyCurrentlyDown (keyCode);
}

void LookAndFeel::playAlertSound()
{
    std::cout << "\a" << std::flush;
}

//==============================================================================
static int showDialog (const MessageBoxOptions& options,
                       ModalComponentManager::Callback* callback,
                       Async async)
{
    const auto dummyCallback = [] (int) {};

    switch (options.getNumButtons())
    {
        case 2:
        {
            if (async == Async::yes && callback == nullptr)
                callback = ModalCallbackFunction::create (dummyCallback);

            return AlertWindow::showOkCancelBox (options.getIconType(),
                                                 options.getTitle(),
                                                 options.getMessage(),
                                                 options.getButtonText (0),
                                                 options.getButtonText (1),
                                                 options.getAssociatedComponent(),
                                                 callback) ? 1 : 0;
        }

        case 3:
        {
            if (async == Async::yes && callback == nullptr)
                callback = ModalCallbackFunction::create (dummyCallback);

            return AlertWindow::showYesNoCancelBox (options.getIconType(),
                                                    options.getTitle(),
                                                    options.getMessage(),
                                                    options.getButtonText (0),
                                                    options.getButtonText (1),
                                                    options.getButtonText (2),
                                                    options.getAssociatedComponent(),
                                                    callback);
        }

        case 1:
        default:
            break;
    }

   #if JUCE_MODAL_LOOPS_PERMITTED
    if (async == Async::no)
    {
        AlertWindow::showMessageBox (options.getIconType(),
                                     options.getTitle(),
                                     options.getMessage(),
                                     options.getButtonText (0),
                                     options.getAssociatedComponent());
    }
    else
   #endif
    {
        AlertWindow::showMessageBoxAsync (options.getIconType(),
                                          options.getTitle(),
                                          options.getMessage(),
                                          options.getButtonText (0),
                                          options.getAssociatedComponent(),
                                          callback);
    }

    return 0;
}

#if JUCE_MODAL_LOOPS_PERMITTED
void JUCE_CALLTYPE NativeMessageBox::showMessageBox (MessageBoxIconType iconType,
                                                     const String& title, const String& message,
                                                     Component* /*associatedComponent*/)
{
    AlertWindow::showMessageBox (iconType, title, message);
}

int JUCE_CALLTYPE NativeMessageBox::show (const MessageBoxOptions& options)
{
    return showDialog (options, nullptr, Async::no);
}
#endif

void JUCE_CALLTYPE NativeMessageBox::showMessageBoxAsync (MessageBoxIconType iconType,
                                                          const String& title, const String& message,
                                                          Component* associatedComponent,
                                                          ModalComponentManager::Callback* callback)
{
    AlertWindow::showMessageBoxAsync (iconType, title, message, {}, associatedComponent, callback);
}

bool JUCE_CALLTYPE NativeMessageBox::showOkCancelBox (MessageBoxIconType iconType,
                                                      const String& title, const String& message,
                                                      Component* associatedComponent,
                                                      ModalComponentManager::Callback* callback)
{
    return AlertWindow::showOkCancelBox (iconType, title, message, {}, {}, associatedComponent, callback);
}

int JUCE_CALLTYPE NativeMessageBox::showYesNoCancelBox (MessageBoxIconType iconType,
                                                        const String& title, const String& message,
                                                        Component* associatedComponent,
                                                        ModalComponentManager::Callback* callback)
{
    return AlertWindow::showYesNoCancelBox (iconType, title, message, {}, {}, {},
                                            associatedComponent, callback);
}

int JUCE_CALLTYPE NativeMessageBox::showYesNoBox (MessageBoxIconType iconType,
                                                  const String& title, const String& message,
                                                  Component* associatedComponent,
                                                  ModalComponentManager::Callback* callback)
{
    return AlertWindow::showOkCancelBox (iconType, title, message, TRANS("Yes"), TRANS("No"),
                                         associatedComponent, callback);
}

void JUCE_CALLTYPE NativeMessageBox::showAsync (const MessageBoxOptions& options,
                                                ModalComponentManager::Callback* callback)
{
    showDialog (options, callback, Async::yes);
}

void JUCE_CALLTYPE NativeMessageBox::showAsync (const MessageBoxOptions& options,
                                                std::function<void (int)> callback)
{
    showAsync (options, ModalCallbackFunction::create (callback));
}

//==============================================================================
Image juce_createIconForFile (const File&)
{
    return {};
}

void juce_LinuxAddRepaintListener (ComponentPeer* peer, Component* dummy);
void juce_LinuxAddRepaintListener (ComponentPeer* peer, Component* dummy)
{
    if (auto* linuxPeer = dynamic_cast<LinuxComponentPeer*> (peer))
        linuxPeer->addOpenGLRepaintListener (dummy);
}

void juce_LinuxRemoveRepaintListener (ComponentPeer* peer, Component* dummy);
void juce_LinuxRemoveRepaintListener (ComponentPeer* peer, Component* dummy)
{
    if (auto* linuxPeer = dynamic_cast<LinuxComponentPeer*> (peer))
        linuxPeer->removeOpenGLRepaintListener (dummy);
}

} // namespace juce