qdesigner_menubar.cpp

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// 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 "qdesigner_menubar_p.h"
#include "qdesigner_menu_p.h"
#include "qdesigner_command_p.h"
#include "qdesigner_propertycommand_p.h"
#include "actionrepository_p.h"
#include "actionprovider_p.h"
#include "actioneditor_p.h"
#include "menuactionlineedit_p.h"
#include "qdesigner_utils_p.h"
#include "promotiontaskmenu_p.h"
#include "qdesigner_objectinspector_p.h"
 
#include <QtDesigner/abstractformwindow.h>
#include <QtDesigner/abstractformeditor.h>
#include <QtDesigner/abstractwidgetfactory.h>
#include <QtDesigner/qextensionmanager.h>
 
#include <QtCore/qmimedata.h>
 
#include <QtCore/qdebug.h>
 
#include <QtWidgets/qapplication.h>
#include <QtGui/qdrag.h>
#include <QtWidgets/qlineedit.h>
#include <QtGui/qpainter.h>
#include <QtGui/qevent.h>
 
QT_BEGIN_NAMESPACE
 
using namespace Qt::StringLiterals;
 
using ActionList = QList<QAction *>;
 
namespace qdesigner_internal
{
 
/////////////////////////////////////////////////////////////////////////////////////////////////////////
SpecialMenuAction::SpecialMenuAction(QObject *parent)
    : QAction(parent)
{
}
 
SpecialMenuAction::~SpecialMenuAction() = default;
 
class MenuBarEventFilter : public QObject
{
public:
    using QObject::QObject;
 
    bool eventFilter(QObject *object, QEvent *event) override;
};
 
} // namespace qdesigner_internal
 
/////////////////////////////////////////////////////////////////////////////////////////////////////////
QDesignerMenuBar::QDesignerMenuBar(QWidget *parent)  :
    QMenuBar(parent),
    m_addMenu(new qdesigner_internal::SpecialMenuAction(this)),
    m_editor(new qdesigner_internal::MenuActionLineEdit(this)),
    m_promotionTaskMenu(new qdesigner_internal::PromotionTaskMenu(this, qdesigner_internal::PromotionTaskMenu::ModeSingleWidget, this))
{
    setContextMenuPolicy(Qt::DefaultContextMenu);
 
    setAcceptDrops(true); // ### fake
    // Fake property: Keep the menu bar editable in the form even if a native menu bar is used.
    setNativeMenuBar(false);
 
    m_addMenu->setText(tr("Type Here"));
    addAction(m_addMenu);
 
    QFont italic;
    italic.setItalic(true);
    m_addMenu->setFont(italic);
 
    m_editor->setObjectName(u"__qt__passive_editor"_s);
    m_editor->hide();
    connect(m_editor, &qdesigner_internal::MenuActionLineEdit::focusOut,
            this, &QDesignerMenuBar::stopInlineEditing);
    installEventFilter(new qdesigner_internal::MenuBarEventFilter(this));
}
 
QDesignerMenuBar::~QDesignerMenuBar() = default;
 
void QDesignerMenuBar::paintEvent(QPaintEvent *event)
{
    QMenuBar::paintEvent(event);
 
    QPainter p(this);
 
    const auto &actionList = actions();
    for (QAction *a : actionList) {
        if (qobject_cast<qdesigner_internal::SpecialMenuAction*>(a)) {
            const QRect g = actionGeometry(a);
            QLinearGradient lg(g.left(), g.top(), g.left(), g.bottom());
            lg.setColorAt(0.0, Qt::transparent);
            lg.setColorAt(0.7, QColor(0, 0, 0, 32));
            lg.setColorAt(1.0, Qt::transparent);
 
            p.fillRect(g, lg);
        }
    }
 
    QAction *action = currentAction();
 
    if (m_dragging || !action)
        return;
 
    if (hasFocus()) {
        const QRect g = actionGeometry(action);
        QDesignerMenu::drawSelection(&p, g.adjusted(1, 1, -1, -1));
    } else if (action->menu() && action->menu()->isVisible()) {
        const QRect g = actionGeometry(action);
        p.drawRect(g.adjusted(1, 1, -1, -1));
    }
}
 
bool QDesignerMenuBar::handleEvent(QEvent *event)
{
    if (!formWindow())
        return false;
 
    switch (event->type()) {
        case QEvent::MouseButtonDblClick:
            return handleMouseDoubleClickEvent(static_cast<QMouseEvent*>(event));
        case QEvent::MouseButtonPress:
            return handleMousePressEvent(static_cast<QMouseEvent*>(event));
        case QEvent::MouseButtonRelease:
            return handleMouseReleaseEvent(static_cast<QMouseEvent*>(event));
        case QEvent::MouseMove:
            return handleMouseMoveEvent(static_cast<QMouseEvent*>(event));
        case QEvent::ContextMenu:
            return handleContextMenuEvent(static_cast<QContextMenuEvent*>(event));
        case QEvent::KeyPress:
            return handleKeyPressEvent(static_cast<QKeyEvent*>(event));
        case QEvent::FocusIn:
        case QEvent::FocusOut:
            update();
            break;
        default:
            break;
    }
 
    return true;
}
 
bool QDesignerMenuBar::handleMouseDoubleClickEvent(QMouseEvent *event)
{
    if (!rect().contains(event->position().toPoint()))
        return true;
 
    if ((event->buttons() & Qt::LeftButton) != Qt::LeftButton)
        return true;
 
    event->accept();
 
    m_startPosition = QPoint();
 
    m_currentIndex = actionIndexAt(this, event->position().toPoint(), Qt::Horizontal);
    if (m_currentIndex != -1) {
        showLineEdit();
    }
 
    return true;
}
 
bool QDesignerMenuBar::handleKeyPressEvent(QKeyEvent *e)
{
    if (m_editor->isHidden()) { // In navigation mode
        switch (e->key()) {
 
        case Qt::Key_Delete:
            if (m_currentIndex == -1 || m_currentIndex >= realActionCount())
                break;
            hideMenu();
            deleteMenu();
            break;
 
        case Qt::Key_Left:
            e->accept();
            moveLeft(e->modifiers() & Qt::ControlModifier);
            return true;
 
        case Qt::Key_Right:
            e->accept();
            moveRight(e->modifiers() & Qt::ControlModifier);
            return true; // no update
 
        case Qt::Key_Up:
            e->accept();
            moveUp();
            return true;
 
        case Qt::Key_Down:
            e->accept();
            moveDown();
            return true;
 
        case Qt::Key_PageUp:
            m_currentIndex = 0;
            break;
 
        case Qt::Key_PageDown:
            m_currentIndex = actions().size() - 1;
            break;
 
        case Qt::Key_Enter:
        case Qt::Key_Return:
            e->accept();
            enterEditMode();
            return true; // no update
 
        case Qt::Key_Alt:
        case Qt::Key_Shift:
        case Qt::Key_Control:
        case Qt::Key_Escape:
            e->ignore();
            setFocus(); // FIXME: this is because some other widget get the focus when CTRL is pressed
            return true; // no update
 
        default:
            if (!e->text().isEmpty() && e->text().at(0).toLatin1() >= 32) {
                showLineEdit();
                QApplication::sendEvent(m_editor, e);
                e->accept();
            } else {
                e->ignore();
            }
            return true;
        }
    } else { // In edit mode
        switch (e->key()) {
        default:
            return false;
 
        case Qt::Key_Control:
            e->ignore();
            return true;
 
        case Qt::Key_Enter:
        case Qt::Key_Return:
            if (!m_editor->text().isEmpty()) {
                leaveEditMode(ForceAccept);
                if (m_lastFocusWidget)
                    m_lastFocusWidget->setFocus();
 
                m_editor->hide();
                showMenu();
                break;
            }
            Q_FALLTHROUGH();
 
        case Qt::Key_Escape:
            update();
            setFocus();
            break;
        }
    }
 
    e->accept();
    update();
 
    return true;
}
 
void QDesignerMenuBar::startDrag(const QPoint &pos)
{
    using namespace qdesigner_internal;
 
    const int index = findAction(pos);
    if (m_currentIndex == -1 || index >= realActionCount())
        return;
 
    QAction *action = safeActionAt(index);
 
    QDesignerFormWindowInterface *fw = formWindow();
    auto *cmd = new qdesigner_internal::RemoveActionFromCommand(fw);
    cmd->init(this, action, actions().at(index + 1));
    fw->commandHistory()->push(cmd);
 
    adjustSize();
 
    hideMenu(index);
 
    QDrag *drag = new QDrag(this);
    drag->setPixmap(ActionRepositoryMimeData::actionDragPixmap(action));
    drag->setMimeData(new ActionRepositoryMimeData(action, Qt::MoveAction));
 
    const int old_index = m_currentIndex;
    m_currentIndex = -1;
 
    if (drag->exec(Qt::MoveAction) == Qt::IgnoreAction) {
        auto *cmd = new qdesigner_internal::InsertActionIntoCommand(fw);
        cmd->init(this, action, safeActionAt(index));
        fw->commandHistory()->push(cmd);
 
        m_currentIndex = old_index;
        adjustSize();
    }
}
 
bool QDesignerMenuBar::handleMousePressEvent(QMouseEvent *event)
{
    m_startPosition = QPoint();
    event->accept();
 
    if (event->button() != Qt::LeftButton)
        return true;
 
    m_startPosition = event->position().toPoint();
    const int newIndex = actionIndexAt(this, m_startPosition, Qt::Horizontal);
    const bool changed = newIndex != m_currentIndex;
    m_currentIndex =  newIndex;
    updateCurrentAction(changed);
 
    return true;
}
 
bool QDesignerMenuBar::handleMouseReleaseEvent(QMouseEvent *event)
{
    m_startPosition = QPoint();
 
    if (event->button() != Qt::LeftButton)
        return true;
 
    event->accept();
    m_currentIndex = actionIndexAt(this, event->position().toPoint(), Qt::Horizontal);
    if (!m_editor->isVisible() && m_currentIndex != -1 && m_currentIndex < realActionCount())
        showMenu();
 
    return true;
}
 
bool QDesignerMenuBar::handleMouseMoveEvent(QMouseEvent *event)
{
    if ((event->buttons() & Qt::LeftButton) != Qt::LeftButton)
        return true;
 
    if (m_startPosition.isNull())
        return true;
 
    const QPoint pos = mapFromGlobal(event->globalPosition().toPoint());
 
    if ((pos - m_startPosition).manhattanLength() < qApp->startDragDistance())
        return true;
 
    const int index =  actionIndexAt(this, m_startPosition, Qt::Horizontal);
    if (index < actions().size()) {
        hideMenu(index);
        update();
    }
 
    startDrag(m_startPosition);
    m_startPosition = QPoint();
 
    return true;
}
 
ActionList QDesignerMenuBar::contextMenuActions()
{
    using namespace qdesigner_internal;
 
    ActionList rc;
    if (QAction *action = safeActionAt(m_currentIndex)) {
        if (!qobject_cast<SpecialMenuAction*>(action)) {
            QVariant itemData;
            itemData.setValue(action);
 
            QAction *remove_action = new QAction(tr("Remove Menu '%1'").arg(action->menu()->objectName()), nullptr);
            remove_action->setData(itemData);
            connect(remove_action, &QAction::triggered, this, &QDesignerMenuBar::deleteMenu);
            rc.push_back(remove_action);
            QAction *sep = new QAction(nullptr);
            sep->setSeparator(true);
            rc.push_back(sep);
        }
    }
 
    m_promotionTaskMenu->addActions(formWindow(), PromotionTaskMenu::TrailingSeparator, rc);
 
    QAction *remove_menubar = new QAction(tr("Remove Menu Bar"), nullptr);
    connect(remove_menubar, &QAction::triggered, this, &QDesignerMenuBar::slotRemoveMenuBar);
    rc.push_back(remove_menubar);
    return rc;
}
 
bool QDesignerMenuBar::handleContextMenuEvent(QContextMenuEvent *event)
{
    event->accept();
 
    m_currentIndex = actionIndexAt(this, mapFromGlobal(event->globalPos()), Qt::Horizontal);
 
    update();
 
    QMenu menu;
    const ActionList al = contextMenuActions();
    for (auto *a : al)
        menu.addAction(a);
    menu.exec(event->globalPos());
    return true;
}
 
void QDesignerMenuBar::slotRemoveMenuBar()
{
    Q_ASSERT(formWindow() != nullptr);
 
    QDesignerFormWindowInterface *fw = formWindow();
 
    auto *cmd = new qdesigner_internal::DeleteMenuBarCommand(fw);
    cmd->init(this);
    fw->commandHistory()->push(cmd);
}
 
void QDesignerMenuBar::stopInlineEditing()
{
    if (!m_editor->isHidden()) {
        leaveEditMode(Default);
        m_editor->hide();
        update();
    }
}
 
void QDesignerMenuBar::focusOutEvent(QFocusEvent *event)
{
    QMenuBar::focusOutEvent(event);
}
 
void QDesignerMenuBar::enterEditMode()
{
    if (m_currentIndex >= 0 && m_currentIndex <= realActionCount()) {
        showLineEdit();
    }
}
 
void QDesignerMenuBar::leaveEditMode(LeaveEditMode mode)
{
    using namespace qdesigner_internal;
 
    m_editor->releaseKeyboard();
 
    if (mode == Default)
        return;
 
    if (m_editor->text().isEmpty())
        return;
 
    QAction *action = nullptr;
 
    QDesignerFormWindowInterface *fw = formWindow();
    Q_ASSERT(fw);
 
    if (m_currentIndex >= 0 && m_currentIndex < realActionCount()) {
        action = safeActionAt(m_currentIndex);
        fw->beginCommand(QApplication::translate("Command", "Change Title"));
    } else {
        fw->beginCommand(QApplication::translate("Command", "Insert Menu"));
        const QString niceObjectName = ActionEditor::actionTextToName(m_editor->text(), u"menu"_s);
        QMenu *menu = qobject_cast<QMenu*>(fw->core()->widgetFactory()->createWidget(u"QMenu"_s, this));
        fw->core()->widgetFactory()->initialize(menu);
        menu->setObjectName(niceObjectName);
        menu->setTitle(tr("Menu"));
        fw->ensureUniqueObjectName(menu);
        action = menu->menuAction();
        auto *cmd = new qdesigner_internal::AddMenuActionCommand(fw);
        cmd->init(action, m_addMenu, this, this);
        fw->commandHistory()->push(cmd);
    }
 
    auto *cmd = new qdesigner_internal::SetPropertyCommand(fw);
    cmd->init(action, u"text"_s, m_editor->text());
    fw->commandHistory()->push(cmd);
    fw->endCommand();
}
 
void QDesignerMenuBar::showLineEdit()
{
    QAction *action = nullptr;
 
    if (m_currentIndex >= 0 && m_currentIndex < realActionCount())
        action = safeActionAt(m_currentIndex);
    else
        action = m_addMenu;
 
    if (action->isSeparator())
        return;
 
    // hideMenu();
 
    m_lastFocusWidget = qApp->focusWidget();
 
    // open edit field for item name
    const QString text = action != m_addMenu ? action->text() : QString();
 
    m_editor->setText(text);
    m_editor->selectAll();
    m_editor->setGeometry(actionGeometry(action));
    m_editor->show();
    m_editor->activateWindow();
    m_editor->setFocus();
    m_editor->grabKeyboard();
}
 
bool qdesigner_internal::MenuBarEventFilter::eventFilter(QObject *object, QEvent *event)
{
    switch (event->type()) {
        case QEvent::KeyPress:
        case QEvent::KeyRelease:
        case QEvent::ContextMenu:
        case QEvent::MouseMove:
        case QEvent::MouseButtonPress:
        case QEvent::MouseButtonRelease:
        case QEvent::MouseButtonDblClick:
        case QEvent::Enter:
        case QEvent::Leave:
        case QEvent::FocusIn:
        case QEvent::FocusOut:
            if (auto *mb = qobject_cast<QDesignerMenuBar *>(object))
                return mb->handleEvent(event);
            break;
        case QEvent::Shortcut:
            event->accept();
            return true;
        default:
            break;
 
    }
    return QObject::eventFilter(object, event);
};
 
int QDesignerMenuBar::findAction(const QPoint &pos) const
{
    const int index = actionIndexAt(this, pos, Qt::Horizontal);
    if (index == -1)
        return realActionCount();
 
    return index;
}
 
void QDesignerMenuBar::adjustIndicator(const QPoint &pos)
{
    const int index = findAction(pos);
    QAction *action = safeActionAt(index);
    Q_ASSERT(action != nullptr);
 
    if (pos != QPoint(-1, -1)) {
        QDesignerMenu *m = qobject_cast<QDesignerMenu*>(action->menu());
        if (!m || m->parentMenu()) {
            m_currentIndex = index;
            showMenu(index);
        }
    }
 
    if (QDesignerActionProviderExtension *a = actionProvider()) {
        a->adjustIndicator(pos);
    }
}
 
QDesignerMenuBar::ActionDragCheck QDesignerMenuBar::checkAction(QAction *action) const
{
    // action belongs to another form
    if (!action || !qdesigner_internal::Utils::isObjectAncestorOf(formWindow()->mainContainer(), action))
        return NoActionDrag;
 
    if (!action->menu())
        return ActionDragOnSubMenu; // simple action only on sub menus
 
    QDesignerMenu *m = qobject_cast<QDesignerMenu*>(action->menu());
    if (m && m->parentMenu())
        return ActionDragOnSubMenu; // it looks like a submenu
 
    if (actions().contains(action))
        return ActionDragOnSubMenu; // we already have the action in the menubar
 
    return AcceptActionDrag;
}
 
void QDesignerMenuBar::dragEnterEvent(QDragEnterEvent *event)
{
    auto *d = qobject_cast<const qdesigner_internal::ActionRepositoryMimeData*>(event->mimeData());
    if (!d || d->actionList().isEmpty()) {
        event->ignore();
        return;
    }
 
    QAction *action = d->actionList().first();
    switch (checkAction(action)) {
    case NoActionDrag:
        event->ignore();
        break;
    case ActionDragOnSubMenu:
        m_dragging = true;
        d->accept(event);
        break;
    case AcceptActionDrag:
        m_dragging = true;
        d->accept(event);
        adjustIndicator(event->position().toPoint());
        break;
    }
}
 
void QDesignerMenuBar::dragMoveEvent(QDragMoveEvent *event)
{
    auto *d = qobject_cast<const qdesigner_internal::ActionRepositoryMimeData*>(event->mimeData());
    if (!d || d->actionList().isEmpty()) {
        event->ignore();
        return;
    }
    QAction *action = d->actionList().first();
 
    switch (checkAction(action)) {
    case NoActionDrag:
        event->ignore();
        break;
    case ActionDragOnSubMenu:
        event->ignore();
        showMenu(findAction(event->position().toPoint()));
        break;
    case AcceptActionDrag:
        d->accept(event);
        adjustIndicator(event->position().toPoint());
        break;
    }
}
 
void QDesignerMenuBar::dragLeaveEvent(QDragLeaveEvent *)
{
    m_dragging = false;
 
    adjustIndicator(QPoint(-1, -1));
}
 
void QDesignerMenuBar::dropEvent(QDropEvent *event)
{
    m_dragging = false;
 
    if (auto *d = qobject_cast<const qdesigner_internal::ActionRepositoryMimeData*>(event->mimeData())) {
 
        QAction *action = d->actionList().first();
        if (checkAction(action) == AcceptActionDrag) {
            event->acceptProposedAction();
            int index = findAction(event->position().toPoint());
            index = qMin(index, actions().size() - 1);
 
            QDesignerFormWindowInterface *fw = formWindow();
            auto *cmd = new qdesigner_internal::InsertActionIntoCommand(fw);
            cmd->init(this, action, safeActionAt(index));
            fw->commandHistory()->push(cmd);
 
            m_currentIndex = index;
            update();
            adjustIndicator(QPoint(-1, -1));
            return;
        }
    }
    event->ignore();
}
 
void QDesignerMenuBar::actionEvent(QActionEvent *event)
{
    QMenuBar::actionEvent(event);
}
 
QDesignerFormWindowInterface *QDesignerMenuBar::formWindow() const
{
    return QDesignerFormWindowInterface::findFormWindow(const_cast<QDesignerMenuBar*>(this));
}
 
QDesignerActionProviderExtension *QDesignerMenuBar::actionProvider()
{
    if (QDesignerFormWindowInterface *fw = formWindow()) {
        QDesignerFormEditorInterface *core = fw->core();
        return qt_extension<QDesignerActionProviderExtension*>(core->extensionManager(), this);
    }
 
    return nullptr;
}
 
QAction *QDesignerMenuBar::currentAction() const
{
    if (m_currentIndex < 0 || m_currentIndex >= actions().size())
        return nullptr;
 
    return safeActionAt(m_currentIndex);
}
 
int QDesignerMenuBar::realActionCount() const
{
    return actions().size() - 1; // 1 fake actions
}
 
bool QDesignerMenuBar::dragging() const
{
    return m_dragging;
}
 
void QDesignerMenuBar::moveLeft(bool ctrl)
{
    if (layoutDirection() == Qt::LeftToRight) {
        movePrevious(ctrl);
    } else {
        moveNext(ctrl);
    }
}
 
void QDesignerMenuBar::moveRight(bool ctrl)
{
    if (layoutDirection() == Qt::LeftToRight) {
        moveNext(ctrl);
    } else {
        movePrevious(ctrl);
    }
}
 
void QDesignerMenuBar::movePrevious(bool ctrl)
{
    const bool swapped = ctrl && swapActions(m_currentIndex, m_currentIndex - 1);
    const int newIndex = qMax(0, m_currentIndex - 1);
    // Always re-select, swapping destroys order
    if (swapped || newIndex != m_currentIndex) {
        m_currentIndex = newIndex;
        updateCurrentAction(true);
    }
}
 
void QDesignerMenuBar::moveNext(bool ctrl)
{
    const bool swapped = ctrl && swapActions(m_currentIndex + 1, m_currentIndex);
    const int newIndex = qMin(actions().size() - 1, m_currentIndex + 1);
    if (swapped || newIndex != m_currentIndex) {
        m_currentIndex = newIndex;
        updateCurrentAction(!ctrl);
    }
}
 
void QDesignerMenuBar::moveUp()
{
    update();
}
 
void QDesignerMenuBar::moveDown()
{
    showMenu();
}
 
void QDesignerMenuBar::adjustSpecialActions()
{
    removeAction(m_addMenu);
    addAction(m_addMenu);
}
 
void QDesignerMenuBar::hideMenu(int index)
{
    if (index < 0 && m_currentIndex >= 0)
        index = m_currentIndex;
 
    if (index < 0 || index >= realActionCount())
        return;
 
    QAction *action = safeActionAt(index);
 
    if (action && action->menu()) {
        action->menu()->hide();
 
        if (QDesignerMenu *menu = qobject_cast<QDesignerMenu*>(action->menu())) {
            menu->closeMenuChain();
        }
    }
}
 
void QDesignerMenuBar::deleteMenu()
{
    deleteMenuAction(currentAction());
}
 
void QDesignerMenuBar::deleteMenuAction(QAction *action)
{
    if (action && !qobject_cast<qdesigner_internal::SpecialMenuAction*>(action)) {
        const int pos = actions().indexOf(action);
        QAction *action_before = nullptr;
        if (pos != -1)
            action_before = safeActionAt(pos + 1);
 
        QDesignerFormWindowInterface *fw = formWindow();
        auto *cmd = new qdesigner_internal::RemoveMenuActionCommand(fw);
        cmd->init(action, action_before, this, this);
        fw->commandHistory()->push(cmd);
    }
}
 
void QDesignerMenuBar::showMenu(int index)
{
    if (index < 0 && m_currentIndex >= 0)
        index = m_currentIndex;
 
    if (index < 0 || index >= realActionCount())
        return;
 
    m_currentIndex = index;
    QAction *action = currentAction();
 
    if (action && action->menu()) {
        if (m_lastMenuActionIndex != -1 && m_lastMenuActionIndex != index) {
            hideMenu(m_lastMenuActionIndex);
        }
 
        m_lastMenuActionIndex = index;
        QMenu *menu = action->menu();
        const QRect g = actionGeometry(action);
 
        if (!menu->isVisible()) {
            if ((menu->windowFlags() & Qt::Popup) != Qt::Popup)
                menu->setWindowFlags(Qt::Popup);
            menu->adjustSize();
            if (layoutDirection() == Qt::LeftToRight) {
                menu->move(mapToGlobal(g.bottomLeft()));
            } else {
                // The position is not initially correct due to the unknown width,
                // causing it to overlap a bit the first time it is invoked.
                QPoint point = g.bottomRight() - QPoint(menu->width(), 0);
                menu->move(mapToGlobal(point));
            }
            menu->setFocus(Qt::MouseFocusReason);
            menu->raise();
            menu->show();
        } else {
            menu->raise();
        }
    }
}
 
QAction *QDesignerMenuBar::safeActionAt(int index) const
{
    if (index < 0 || index >= actions().size())
        return nullptr;
 
    return actions().at(index);
}
 
bool QDesignerMenuBar::swapActions(int a, int b)
{
    using namespace qdesigner_internal;
 
    const int left = qMin(a, b);
    int right = qMax(a, b);
 
    QAction *action_a = safeActionAt(left);
    QAction *action_b = safeActionAt(right);
 
    if (action_a == action_b
            || !action_a
            || !action_b
            || qobject_cast<SpecialMenuAction*>(action_a)
            || qobject_cast<SpecialMenuAction*>(action_b))
        return false; // nothing to do
 
    right = qMin(right, realActionCount());
    if (right < 0)
        return false; // nothing to do
 
    formWindow()->beginCommand(QApplication::translate("Command", "Move action"));
 
    QAction *action_b_before = safeActionAt(right + 1);
 
    QDesignerFormWindowInterface *fw = formWindow();
    auto *cmd1 = new qdesigner_internal::RemoveActionFromCommand(fw);
    cmd1->init(this, action_b, action_b_before, false);
    fw->commandHistory()->push(cmd1);
 
    QAction *action_a_before = safeActionAt(left + 1);
 
    auto *cmd2 = new qdesigner_internal::InsertActionIntoCommand(fw);
    cmd2->init(this, action_b, action_a_before, false);
    fw->commandHistory()->push(cmd2);
 
    auto *cmd3 = new qdesigner_internal::RemoveActionFromCommand(fw);
    cmd3->init(this, action_a, action_b, false);
    fw->commandHistory()->push(cmd3);
 
    auto *cmd4 = new qdesigner_internal::InsertActionIntoCommand(fw);
    cmd4->init(this, action_a, action_b_before, true);
    fw->commandHistory()->push(cmd4);
 
    fw->endCommand();
 
    return true;
}
 
void QDesignerMenuBar::keyPressEvent(QKeyEvent *event)
{
    event->ignore();
}
 
void QDesignerMenuBar::keyReleaseEvent(QKeyEvent *event)
{
    event->ignore();
}
 
void QDesignerMenuBar::updateCurrentAction(bool selectAction)
{
    using namespace qdesigner_internal;
 
    update();
 
    if (!selectAction)
        return;
 
    QAction *action = currentAction();
    if (!action || action == m_addMenu)
        return;
 
    QMenu *menu = action->menu();
    if (!menu)
        return;
 
    QDesignerObjectInspector *oi = nullptr;
    if (QDesignerFormWindowInterface *fw = formWindow())
        oi = qobject_cast<QDesignerObjectInspector *>(fw->core()->objectInspector());
 
    if (!oi)
        return;
 
    oi->clearSelection();
    oi->selectObject(menu);
}
 
QT_END_NAMESPACE