q3action.cpp

奇趣公司比较新的qt/emd版本

    for (QList<Q3Action*>::Iterator it(actions.begin()); it != actions.end(); ++it) {
        if (that->isEnabled() && !(*it)->d->forceDisabled)
            (*it)->setEnabled(true);
        else if (!that->isEnabled() && (*it)->isEnabled()) {
            (*it)->setEnabled(false);
            (*it)->d->forceDisabled = false;
        }
	if (that->isVisible() && !(*it)->d->forceInvisible) {
	    (*it)->setVisible(true);
	} else if (!that->isVisible() && (*it)->isVisible()) {
	    (*it)->setVisible(false);
	    (*it)->d->forceInvisible = false;
	}
    }
    for (QList<QComboBox*>::Iterator cb(comboboxes.begin()); cb != comboboxes.end(); ++cb) {
        QComboBox *combobox = *cb;
        combobox->setEnabled(that->isEnabled());
        combobox->setShown(that->isVisible());

#ifndef QT_NO_TOOLTIP
        QToolTip::remove(combobox);
        if (that->toolTip().size())
            QToolTip::add(combobox, that->toolTip());
#endif
#ifndef QT_NO_WHATSTHIS
        QWhatsThis::remove(combobox);
        if (that->whatsThis().size())
            QWhatsThis::add(combobox, that->whatsThis());
#endif

    }
    for (QList<QToolButton*>::Iterator mb(menubuttons.begin()); mb != menubuttons.end(); ++mb) {
        QToolButton *button = *mb;
        button->setEnabled(that->isEnabled());
        button->setShown(that->isVisible());

        if (!that->text().isNull())
            button->setTextLabel(that->text());
        if (!that->iconSet().isNull())
            button->setIconSet(that->iconSet());

#ifndef QT_NO_TOOLTIP
        QToolTip::remove(*mb);
        if (that->toolTip().size())
            QToolTip::add(button, that->toolTip());
#endif
#ifndef QT_NO_WHATSTHIS
        QWhatsThis::remove(button);
        if (that->whatsThis().size())
            QWhatsThis::add(button, that->whatsThis());
#endif
    }
    if(QAction *act = Q3ActionGroupPrivate::Action4Item::action) {
        act->setVisible(that->isVisible());
        act->setEnabled(that->isEnabled());
    }
    for (QList<Q3ActionGroupPrivate::MenuItem*>::Iterator pu(menuitems.begin()); pu != menuitems.end(); ++pu) {
        QWidget* parent = (*pu)->popup->parentWidget();
        if (::qobject_cast<Q3PopupMenu*>(parent)) {
            Q3PopupMenu* ppopup = (Q3PopupMenu*)parent;
            ppopup->setItemEnabled((*pu)->id, that->isEnabled());
            ppopup->setItemVisible((*pu)->id, that->isVisible());
        } else {
            (*pu)->popup->setEnabled(that->isEnabled());
        }
    }
    for (QList<Q3PopupMenu*>::Iterator pm(popupmenus.begin()); pm != popupmenus.end(); ++pm) {
        Q3PopupMenu *popup = *pm;
        Q3PopupMenu *parent = ::qobject_cast<Q3PopupMenu*>(popup->parentWidget());
        if (!parent)
            continue;

        int index;
        parent->findPopup(popup, &index);
        int id = parent->idAt(index);
        if (!that->iconSet().isNull())
            parent->changeItem(id, that->iconSet(), that->menuText());
        else
            parent->changeItem(id, that->menuText());
        parent->setItemEnabled(id, that->isEnabled());
#ifndef QT_NO_ACCEL
        parent->setAccel(that->accel(), id);
#endif
    }
}

/*!
    \class Q3ActionGroup q3action.h
    \brief The Q3ActionGroup class groups actions together.

    \compat

    In some situations it is useful to group actions together. For
    example, if you have a left justify action, a right justify action
    and a center action, only one of these actions should be active at
    any one time, and one simple way of achieving this is to group the
    actions together in an action group.

    An action group can also be added to a menu or a toolbar as a
    single unit, with all the actions within the action group
    appearing as separate menu options and toolbar buttons.

    The actions in an action group emit their activated() (and for
    toggle actions, toggled()) signals as usual.

    The setExclusive() function is used to ensure that only one action
    is active at any one time: it should be used with actions which
    have their \c toggleAction set to true.

    Action group actions appear as individual menu options and toolbar
    buttons. For exclusive action groups use setUsesDropDown() to
    display the actions in a subwidget of any widget the action group
    is added to. For example, the actions would appear in a combobox
    in a toolbar or as a submenu in a menu.

    Actions can be added to an action group using add(), but normally
    they are added by creating the action with the action group as
    parent. Actions can have separators dividing them using
    addSeparator(). Action groups are added to widgets with addTo().
*/

/*!
    Constructs an action group called \a name, with parent \a parent.

    The action group is exclusive by default. Call setExclusive(false) to make
    the action group non-exclusive.
*/
Q3ActionGroup::Q3ActionGroup(QObject* parent, const char* name)
    : Q3Action(parent, name)
{
    d = new Q3ActionGroupPrivate;
    d->exclusive = true;
    d->dropdown = false;
    d->selected = 0;
    d->separatorAction = 0;

    connect(this, SIGNAL(selected(Q3Action*)), SLOT(internalToggle(Q3Action*)));
}

/*!
    Constructs an action group called \a name, with parent \a parent.

    If \a exclusive is true only one toggle action in the group will
    ever be active.

    \sa exclusive
*/
Q3ActionGroup::Q3ActionGroup(QObject* parent, const char* name, bool exclusive)
    : Q3Action(parent, name)
{
    d = new Q3ActionGroupPrivate;
    d->exclusive = exclusive;
    d->dropdown = false;
    d->selected = 0;
    d->separatorAction = 0;

    connect(this, SIGNAL(selected(Q3Action*)), SLOT(internalToggle(Q3Action*)));
}

/*!
    Destroys the object and frees allocated resources.
*/

Q3ActionGroup::~Q3ActionGroup()
{
    QList<Q3ActionGroupPrivate::MenuItem*>::Iterator mit(d->menuitems.begin());
    while (mit != d->menuitems.end()) {
        Q3ActionGroupPrivate::MenuItem *mi = *mit;
        ++mit;
        if (mi->popup)
            mi->popup->disconnect(SIGNAL(destroyed()), this, SLOT(objectDestroyed()));
    }

    QList<QComboBox*>::Iterator cbit(d->comboboxes.begin());
    while (cbit != d->comboboxes.end()) {
        QComboBox *cb = *cbit;
        ++cbit;
        cb->disconnect(SIGNAL(destroyed()), this, SLOT(objectDestroyed()));
    }
    QList<QToolButton*>::Iterator mbit(d->menubuttons.begin());
    while (mbit != d->menubuttons.end()) {
        QToolButton *mb = *mbit;
        ++mbit;
        mb->disconnect(SIGNAL(destroyed()), this, SLOT(objectDestroyed()));
    }
    QList<Q3PopupMenu*>::Iterator pmit(d->popupmenus.begin());
    while (pmit != d->popupmenus.end()) {
        Q3PopupMenu *pm = *pmit;
        ++pmit;
        pm->disconnect(SIGNAL(destroyed()), this, SLOT(objectDestroyed()));
    }

    QList<Q3ActionGroupPrivate::Action4Item*>::Iterator itmi4(d->action4items.begin());
    Q3ActionGroupPrivate::Action4Item* mi4;
    while (itmi4 != d->action4items.end()) {
        mi4 = *itmi4;
        ++itmi4;
        mi4->widget->removeAction(mi4->action);
    }
    delete Q3ActionPrivate::Action4Item::action;
    Q3ActionPrivate::Action4Item::action = 0;

    delete d->separatorAction;
    while (!d->menubuttons.isEmpty())
        delete d->menubuttons.takeFirst();
    while (!d->comboboxes.isEmpty())
        delete d->comboboxes.takeFirst();
    while (!d->menuitems.isEmpty())
        delete d->menuitems.takeFirst();
    while (!d->popupmenus.isEmpty())
        delete d->popupmenus.takeFirst();
    delete d;
}

/*!
    \property Q3ActionGroup::exclusive
    \brief whether the action group does exclusive toggling

    If exclusive is true only one toggle action in the action group
    can ever be active at any one time. If the user chooses another
    toggle action in the group the one they chose becomes active and
    the one that was active becomes inactive.

    \sa Q3Action::toggleAction
*/
void Q3ActionGroup::setExclusive(bool enable)
{
    d->exclusive = enable;
}

bool Q3ActionGroup::isExclusive() const
{
    return d->exclusive;
}

/*!
    \property Q3ActionGroup::usesDropDown
    \brief whether the group's actions are displayed in a subwidget of
    the widgets the action group is added to

    Exclusive action groups added to a toolbar display their actions
    in a combobox with the action's \l Q3Action::text and \l
    Q3Action::iconSet properties shown. Non-exclusive groups are
    represented by a tool button showing their \l Q3Action::iconSet and
    text() property.

    In a popup menu the member actions are displayed in a submenu.

    Changing usesDropDown only affects \e subsequent calls to addTo().

    This property's default is false.

*/
void Q3ActionGroup::setUsesDropDown(bool enable)
{
    d->dropdown = enable;
}

bool Q3ActionGroup::usesDropDown() const
{
    return d->dropdown;
}

/*!
    Adds action \a action to this group.

    Normally an action is added to a group by creating it with the
    group as parent, so this function is not usually used.

    \sa addTo()
*/
void Q3ActionGroup::add(Q3Action* action)
{
    if (d->actions.contains(action))
        return;

    d->actions.append(action);

    if (action->whatsThis().isNull())
        action->setWhatsThis(whatsThis());
    if (action->toolTip().isNull())
        action->setToolTip(toolTip());
    if (!action->d->forceDisabled)
	action->d->enabled = isEnabled();
    if (!action->d->forceInvisible)
	action->d->visible = isVisible();

    connect(action, SIGNAL(destroyed()), this, SLOT(childDestroyed()));
    connect(action, SIGNAL(activated()), this, SIGNAL(activated()));
    connect(action, SIGNAL(toggled(bool)), this, SLOT(childToggled(bool)));
    connect(action, SIGNAL(activated()), this, SLOT(childActivated()));

    for (QList<QComboBox*>::Iterator cb(d->comboboxes.begin()); cb != d->comboboxes.end(); ++cb)
        action->addTo(*cb);
    for (QList<QToolButton*>::Iterator mb(d->menubuttons.begin()); mb != d->menubuttons.end(); ++mb) {
        QMenu* menu = (*mb)->popup();
        if (!menu)
            continue;
        action->addTo(menu);
    }
    for (QList<Q3ActionGroupPrivate::Action4Item*>::Iterator ac(d->action4items.begin());
         ac != d->action4items.end(); ++ac)
        action->addTo((*ac)->action->menu());
    for (QList<Q3ActionGroupPrivate::MenuItem*>::Iterator mi(d->menuitems.begin());
         mi != d->menuitems.end(); ++mi) {
        Q3PopupMenu* popup = (*mi)->popup;
        if (!popup)
            continue;
        action->addTo(popup);
    }
}

/*!
    Adds a separator to the group.
*/
void Q3ActionGroup::addSeparator()
{
    if (!d->separatorAction)
        d->separatorAction = new Q3Action(0, "qt_separator_action");
    d->actions.append(d->separatorAction);
}


/*!
    Adds this action group to the widget \a w.

    If isExclusive() is false or usesDropDown() is false, the actions within
    the group are added to the widget individually. For example, if the widget
    is a menu, the actions will appear as individual menu options, and
    if the widget is a toolbar, the actions will appear as toolbar buttons.

    If both isExclusive() and usesDropDown() are true, the actions
    are presented either in a combobox (if \a w is a toolbar) or in a
    submenu (if \a w is a menu).

    All actions should be added to the action group \e before the
    action group is added to the widget. If actions are added to the
    action group \e after the action group has been added to the
    widget these later actions will \e not appear.

    \sa setExclusive() setUsesDropDown() removeFrom()
*/
bool Q3ActionGroup::addTo(QWidget *w)
{
#ifndef QT_NO_TOOLBAR
    if (qobject_cast<Q3ToolBar*>(w)) {
        if (d->dropdown) {
            if (!d->exclusive) {
                QList<Q3Action*>::Iterator it(d->actions.begin());
                if (!(*it))
                    return true;

                Q3Action *defAction = *it;

                QToolButton* btn = new QToolButton((Q3ToolBar*) w, "qt_actiongroup_btn");
                addedTo(btn, w);
                connect(btn, SIGNAL(destroyed()), SLOT(objectDestroyed()));
                d->menubuttons.append(btn);

                if (!iconSet().isNull())
                    btn->setIconSet(iconSet());
                else if (!defAction->iconSet().isNull())
                    btn->setIconSet(defAction->iconSet());
                if (text().size())
                    btn->setTextLabel(text());
                else if (defAction->text().size())
                    btn->setTextLabel(defAction->text());
#ifndef QT_NO_TOOLTIP
                if (toolTip().size())
                    QToolTip::add(btn, toolTip());
                else if (defAction->toolTip().size())
                    QToolTip::add(btn, defAction->toolTip());
#endif
#ifndef QT_NO_WHATSTHIS
                if (whatsThis().size())
                    QWhatsThis::add(btn, whatsThis());
                else if (defAction->whatsThis().size())
                    QWhatsThis::add(btn, defAction->whatsThis());
#endif

                connect(btn, SIGNAL(clicked()), defAction, SIGNAL(activated()));
                connect(btn, SIGNAL(toggled(bool)), defAction, SLOT(toolButtonToggled(bool)));
                connect(btn, SIGNAL(destroyed()), defAction, SLOT(objectDestroyed()));

                Q3PopupMenu *menu = new Q3PopupMenu(btn, "qt_actiongroup_menu");
                btn->setPopupDelay(0);
                btn->setPopup(menu);
                btn->setPopupMode(QToolButton::MenuButtonPopup);

                while (it != d->actions.end()) {
                    (*it)->addTo(menu);
                    ++it;
                }
                d->update(this);
                return true;
            } else {
                QComboBox *box = new QComboBox(false, w, "qt_actiongroup_combo");
                addedTo(box, w);
                connect(box, SIGNAL(destroyed()), SLOT(objectDestroyed()));
                d->comboboxes.append(box);
#ifndef QT_NO_TOOLTIP
                if (toolTip().size())
                    QToolTip::add(box, toolTip());
#endif
#ifndef QT_NO_WHATSTHIS
                if (whatsThis().size())
                    QWhatsThis::add(box, whatsThis());
#endif
                int onIndex = 0;
                bool foundOn = false;
                for (QList<Q3Action*>::Iterator it(d->actions.begin()); it != d->actions.end(); ++it) {
                    Q3Action *action = *it;
                    if (!foundOn)
                        foundOn = action->isOn();
                    if (action->objectName() != QLatin1String("qt_separator_action") && !foundOn)
                        onIndex++;
                    action->addTo(box);
                }
                if (foundOn)
                    box->setCurrentItem(onIndex);
                connect(box, SIGNAL(activated(int)), this, SLOT(internalComboBoxActivated(int)));
                connect(box, SIGNAL(highlighted(int)), this, SLOT(internalComboBoxHighlighted(int)));
                d->update(this);
                return true;
            }
        }
    } else
#endif
    if (::qobject_cast<Q3PopupMenu*>(w)) {
        Q3PopupMenu *popup;
        if (d->dropdown) {
            Q3PopupMenu *menu = (Q3PopupMenu*)w;
            popup = new Q3PopupMenu(w, "qt_actiongroup_menu");
            d->popupmenus.append(popup);
            connect(popup, SIGNAL(destroyed()), SLOT(objectDestroyed()));

            int id;
            if (!iconSet().isNull()) {
                if (menuText().isEmpty())