q3action.cpp

奇趣公司比较新的qt/emd版本

                    id = menu->insertItem(iconSet(), text(), popup);
                else
                    id = menu->insertItem(iconSet(), menuText(), popup);
            } else {
                if (menuText().isEmpty())
                    id = menu->insertItem(text(), popup);
                else
                    id = menu->insertItem(menuText(), popup);
            }

            addedTo(menu->indexOf(id), menu);

            Q3ActionGroupPrivate::MenuItem *item = new Q3ActionGroupPrivate::MenuItem;
            item->id = id;
            item->popup = popup;
            d->menuitems.append(item);
        } else {
            popup = (Q3PopupMenu*)w;
        }
        for (QList<Q3Action*>::Iterator it(d->actions.begin()); it != d->actions.end(); ++it) {
            // #### do an addedTo(index, popup, action), need to find out index
            (*it)->addTo(popup);
        }
        return true;
    }
    if (::qobject_cast<QMenu*>(w)) {
        QMenu *menu = (QMenu*)w;
        if (d->dropdown) {
            Q3ActionGroupPrivate::Action4Item *ai = new Q3ActionGroupPrivate::Action4Item;
            if(!ai->action)  { //static
                ai->action = menu->menuAction();
                if (!iconSet().isNull())
                    ai->action->setIcon(iconSet());
                if (menuText().isEmpty())
                    ai->action->setText(text());
                else
                    ai->action->setText(menuText());
            }
            addedTo(w, w);
            ai->widget = w;
            ai->widget->addAction(Q3ActionGroupPrivate::Action4Item::action);
            d->action4items.append(ai);
            menu = ai->action->menu();
        }
        for (QList<Q3Action*>::Iterator it(d->actions.begin()); it != d->actions.end(); ++it)
            (*it)->addTo(menu);
        return true;
    }
    for (QList<Q3Action*>::Iterator it(d->actions.begin()); it != d->actions.end(); ++it) {
        // #### do an addedTo(index, popup, action), need to find out index
        (*it)->addTo(w);
    }
    return true;
}

/*! \reimp
*/
bool Q3ActionGroup::removeFrom(QWidget* w)
{
    for (QList<Q3Action*>::Iterator it(d->actions.begin()); it != d->actions.end(); ++it)
        (*it)->removeFrom(w);

#ifndef QT_NO_TOOLBAR
    if (::qobject_cast<Q3ToolBar*>(w)) {
        QList<QComboBox*>::Iterator cb(d->comboboxes.begin());
        while (cb != d->comboboxes.end()) {
            QComboBox *box = *cb;
            ++cb;
            if (box->parentWidget() == w)
                delete box;
        }
        QList<QToolButton*>::Iterator mb(d->menubuttons.begin());
        while (mb != d->menubuttons.end()) {
            QToolButton *btn = *mb;
            ++mb;
            if (btn->parentWidget() == w)
                delete btn;
        }
    } else
#endif
    if (::qobject_cast<Q3PopupMenu*>(w)) {
        QList<Q3ActionGroupPrivate::MenuItem*>::Iterator pu(d->menuitems.begin());
        while (pu != d->menuitems.end()) {
            Q3ActionGroupPrivate::MenuItem *mi = *pu;
            ++pu;
            if (d->dropdown && mi->popup)
                ((Q3PopupMenu*)w)->removeItem(mi->id);
            delete mi->popup;
        }
    }
    if (::qobject_cast<QMenu*>(w)) {
        QList<Q3ActionGroupPrivate::Action4Item*>::Iterator it(d->action4items.begin());
        Q3ActionGroupPrivate::Action4Item *a4i;
        while (it != d->action4items.end()) {
            a4i = *it;
            ++it;
            if (a4i->widget == w) {
                a4i->widget->removeAction(a4i->action);
                d->action4items.removeAll(a4i);
                delete a4i;
            }
        }
    }
    return true;
}

/*! \internal
*/
void Q3ActionGroup::childToggled(bool b)
{
    if (!isExclusive())
        return;
    Q3Action* s = qobject_cast<Q3Action*>(sender());
    if (!s)
        return;
    if (b) {
        if (s != d->selected) {
            d->selected = s;
            for (QList<Q3Action*>::Iterator it(d->actions.begin()); it != d->actions.end(); ++it) {
                if ((*it)->isToggleAction() && (*it) != s)
                    (*it)->setOn(false);
            }
            emit selected(s);
        }
    } else {
        if (s == d->selected) {
            // at least one has to be selected
            s->setOn(true);
        }
    }
}

/*! \internal
*/
void Q3ActionGroup::childActivated()
{
    Q3Action* s = qobject_cast<Q3Action*>(sender());
    if (s) {
        emit activated(s);
        emit Q3Action::activated();
    }
}


/*! \internal
*/
void Q3ActionGroup::childDestroyed()
{
    d->actions.removeAll((Q3Action *)sender());
    if (d->selected == sender())
        d->selected = 0;
}

/*! \reimp
*/
void Q3ActionGroup::setEnabled(bool enable)
{
    if (enable == isEnabled())
        return;
    Q3Action::setEnabled(enable);
    d->update(this);
}

/*! \reimp
*/
void Q3ActionGroup::setToggleAction(bool toggle)
{
    for (QList<Q3Action*>::Iterator it(d->actions.begin()); it != d->actions.end(); ++it)
        (*it)->setToggleAction(toggle);
    Q3Action::setToggleAction(true);
    d->update(this);
}

/*! \reimp
*/
void Q3ActionGroup::setOn(bool on)
{
    for (QList<Q3Action*>::Iterator it(d->actions.begin()); it != d->actions.end(); ++it) {
        Q3Action *act = *it;
        if (act->isToggleAction())
            act->setOn(on);
    }
    Q3Action::setOn(on);
    d->update(this);
}

/*! \reimp
 */
void Q3ActionGroup::setVisible(bool visible)
{
    Q3Action::setVisible(visible);
    d->update(this);
}

/*! \reimp
*/
void Q3ActionGroup::setIconSet(const QIcon& icon)
{
    Q3Action::setIconSet(icon);
    d->update(this);
}

/*! \reimp
*/
void Q3ActionGroup::setText(const QString& txt)
{
    if (txt == text())
        return;

    Q3Action::setText(txt);
    d->update(this);
}

/*! \reimp
*/
void Q3ActionGroup::setMenuText(const QString& text)
{
    if (text == menuText())
        return;

    Q3Action::setMenuText(text);
    d->update(this);
}

/*! \reimp
*/
void Q3ActionGroup::setToolTip(const QString& text)
{
    if (text == toolTip())
        return;
    for (QList<Q3Action*>::Iterator it(d->actions.begin()); it != d->actions.end(); ++it) {
        if ((*it)->toolTip().isNull())
            (*it)->setToolTip(text);
    }
    Q3Action::setToolTip(text);
    d->update(this);
}

/*! \reimp
*/
void Q3ActionGroup::setWhatsThis(const QString& text)
{
    if (text == whatsThis())
        return;
    for (QList<Q3Action*>::Iterator it(d->actions.begin()); it != d->actions.end(); ++it) {
        if ((*it)->whatsThis().isNull())
            (*it)->setWhatsThis(text);
    }
    Q3Action::setWhatsThis(text);
    d->update(this);
}

/*! \reimp
*/
void Q3ActionGroup::childEvent(QChildEvent *e)
{
    if (!e->removed())
        return;

    Q3Action *action = qobject_cast<Q3Action*>(e->child());
    if (!action)
        return;

    for (QList<QComboBox*>::Iterator cb(d->comboboxes.begin());
         cb != d->comboboxes.end(); ++cb) {
        for (int i = 0; i < (*cb)->count(); i++) {
            if ((*cb)->text(i) == action->text()) {
                (*cb)->removeItem(i);
                break;
            }
        }
    }
    for (QList<QToolButton*>::Iterator mb(d->menubuttons.begin());
         mb != d->menubuttons.end(); ++mb) {
        QMenu* popup = (*mb)->popup();
        if (!popup)
            continue;
        action->removeFrom(popup);
    }
    for (QList<Q3ActionGroupPrivate::MenuItem*>::Iterator mi(d->menuitems.begin());
         mi != d->menuitems.end(); ++mi) {
        Q3PopupMenu* popup = (*mi)->popup;
        if (!popup)
            continue;
        action->removeFrom(popup);
    }
    if(QAction *act = Q3ActionGroupPrivate::Action4Item::action)
        action->removeFrom(act->menu());
}

/*!
    \fn void Q3ActionGroup::selected(Q3Action* action)

    This signal is emitted from exclusive groups when toggle actions
    change state.

    The argument is the \a action whose state changed to "on".

    \sa setExclusive(), isOn() Q3Action::toggled()
*/

/*!
    \fn void Q3ActionGroup::activated(Q3Action* action)

    This signal is emitted from groups when one of its actions gets
    activated.

    The argument is the \a action which was activated.

    \sa setExclusive(), isOn() Q3Action::toggled()
*/


/*! \internal
*/
void Q3ActionGroup::internalComboBoxActivated(int index)
{
    if (index == -1)
        return;

    Q3Action *a = 0;
    for (int i = 0; i <= index && i < (int)d->actions.count(); ++i) {
        a = d->actions.at(i);
        if (a && a->objectName() == QLatin1String("qt_separator_action"))
            index++;
    }
    a = d->actions.at(index);
    if (a) {
        if (a != d->selected) {
            d->selected = a;
            for (QList<Q3Action*>::Iterator it(d->actions.begin()); it != d->actions.end(); ++it) {
                if ((*it)->isToggleAction() && (*it) != a)
                    (*it)->setOn(false);
            }
            if (a->isToggleAction())
                a->setOn(true);

            emit activated(a);
            emit Q3Action::activated();
            emit a->activated();
            if (a->isToggleAction())
                emit selected(d->selected);
        } else if (!a->isToggleAction()) {
            emit activated(a);
            emit Q3Action::activated();
            emit a->activated();
        }
        a->clearStatusText();
    }
}

/*! \internal
*/
void Q3ActionGroup::internalComboBoxHighlighted(int index)
{
    Q3Action *a = 0;
    for (int i = 0; i <= index && i < (int)d->actions.count(); ++i) {
        a = d->actions.at(i);
        if (a && a->objectName() == QLatin1String("qt_separator_action"))
            index++;
    }
    a = d->actions.at(index);
    if (a)
        a->showStatusText(a->statusTip());
    else
        clearStatusText();
}

/*! \internal
*/
void Q3ActionGroup::internalToggle(Q3Action *a)
{
    int index = d->actions.indexOf(a);
    if (index == -1)
        return;

    int lastItem = index;
    for (int i=0; i<lastItem; ++i) {
        Q3Action *action = d->actions.at(i);
        if (action->objectName() == QLatin1String("qt_separator_action"))
            --index;
    }

    for (QList<QComboBox*>::Iterator it(d->comboboxes.begin());
         it != d->comboboxes.end(); ++it)
            (*it)->setCurrentItem(index);
}

/*! \internal
*/
void Q3ActionGroup::objectDestroyed()
{
    const QObject* obj = sender();
    d->menubuttons.removeAll((QToolButton *)obj);
    for (QList<Q3ActionGroupPrivate::MenuItem *>::Iterator mi(d->menuitems.begin());
         mi != d->menuitems.end(); ++mi) {
        if ((*mi)->popup == obj) {
            d->menuitems.removeAll(*mi);
            delete *mi;
            break;
        }
    }
    d->popupmenus.removeAll((Q3PopupMenu*)obj);
    d->comboboxes.removeAll((QComboBox*)obj);
}

/*!
    This function is called from the addTo() function when it has
    created a widget (\a actionWidget) for the child action \a a in
    the \a container.
*/

void Q3ActionGroup::addedTo(QWidget *actionWidget, QWidget *container, Q3Action *a)
{
    Q_UNUSED(actionWidget);
    Q_UNUSED(container);
    Q_UNUSED(a);
}

/*!
    \overload

    This function is called from the addTo() function when it has
    created a menu item for the child action at the index position \a
    index in the popup menu \a menu.
*/

void Q3ActionGroup::addedTo(int index, Q3PopupMenu *menu, Q3Action *a)
{
    Q_UNUSED(index);
    Q_UNUSED(menu);
    Q_UNUSED(a);
}

/*!
    \reimp
    \overload