actioneditor.cpp

来自「奇趣公司比较新的qt/emd版本」· C++ 代码 · 共 593 行 · 第 1/2 页

        return 0;

    QListWidgetItem *item = new QListWidgetItem(m_actionRepository);
    const QSize s = m_actionRepository->iconSize();
    item->setSizeHint(QSize(s.width() * 3, s.height() * 2));

    setListWidgetItem(action, item);

    QVariant itemData;
    qVariantSetValue(itemData, action);
    item->setData(ActionRepository::ActionRole, itemData);
    item->setFlags(item->flags() | Qt::ItemIsDropEnabled);
    return item;
}

void ActionEditor::slotItemChanged(QListWidgetItem *item)
{
    QDesignerFormWindowInterface *fw = formWindow();
    if (!fw)
        return;

    QAction *action = 0;
    if (item)
        action = itemToAction(item);

    m_actionDelete->setEnabled(action != 0);

    if (!action) {
        fw->clearSelection();
        return;
    }

    QDesignerObjectInspector *oi = qobject_cast<QDesignerObjectInspector *>(core()->objectInspector());

    if (action->associatedWidgets().empty()) {
        // Special case: action not in object tree. Unselect all and set in property editor
        fw->clearSelection(false);
        if (oi)
            oi->clearSelection();
        core()->propertyEditor()->setObject(action);
    } else {
        if (oi)
            oi->selectObject(action);
    }
}

QListWidgetItem *ActionEditor::actionToItem(QAction *action) const
{
    const int cnt = m_actionRepository->count();
    for (int i = 0; i < cnt; ++i) {
        QListWidgetItem *item = m_actionRepository->item(i);
        if (itemToAction(item) == action)
            return item;
    }
    return 0;
}

QAction *ActionEditor::itemToAction(QListWidgetItem *item) const
{
    return qvariant_cast<QAction*>(item->data(ActionRepository::ActionRole));
}

void ActionEditor::slotActionChanged()
{
    QAction *action = qobject_cast<QAction*>(sender());
    Q_ASSERT(action != 0);

    QListWidgetItem *item = actionToItem(action);
    if (item == 0) {
        if (action->menu() == 0) // action got its menu deleted, create item
            createListWidgetItem(action);
    } else if (action->menu() != 0) { // action got its menu created, remove item
        delete item;
    } else {
        // action text or icon changed, update item
        setListWidgetItem(action, item);
    }
}

QDesignerFormEditorInterface *ActionEditor::core() const
{
    return m_core;
}

QString ActionEditor::filter() const
{
    return m_filter;
}

void ActionEditor::setFilter(const QString &f)
{
    m_filter = f;
    m_actionRepository->filter(m_filter);
}

// Set changed state of icon property,  reset when icon is cleared
static void refreshIconPropertyChanged(const QAction *action, QDesignerPropertySheetExtension *sheet)
{
    sheet->setChanged(sheet->indexOf(QLatin1String("icon")), !action->icon().isNull());
}

void ActionEditor::manageAction(QAction *action)
{
    action->setParent(formWindow()->mainContainer());
    core()->metaDataBase()->add(action);

    if (action->isSeparator() || action->menu() != 0)
        return;

    QDesignerPropertySheetExtension *sheet = qt_extension<QDesignerPropertySheetExtension*>(core()->extensionManager(), action);
    sheet->setChanged(sheet->indexOf(QLatin1String("objectName")), true);
    sheet->setChanged(sheet->indexOf(QLatin1String("text")), true);
    refreshIconPropertyChanged(action, sheet);

    QListWidgetItem *item = createListWidgetItem(action);
    m_actionRepository->setCurrentItem(item);

    connect(action, SIGNAL(changed()), this, SLOT(slotActionChanged()));
}

void ActionEditor::unmanageAction(QAction *action)
{
    core()->metaDataBase()->remove(action);
    action->setParent(0);

    disconnect(action, SIGNAL(changed()), this, SLOT(slotActionChanged()));

    QListWidgetItem *item = actionToItem(action);
    if (item == 0)
        return;

    delete item;
}

void ActionEditor::slotNewAction()
{
    NewActionDialog dlg(this);
    dlg.setWindowTitle(tr("New action"));

    if (dlg.exec() == QDialog::Accepted) {
        QAction *action = new QAction(formWindow());
        action->setObjectName(dlg.actionName());
        formWindow()->ensureUniqueObjectName(action);
        action->setText(dlg.actionText());
        action->setIcon(dlg.actionIcon());

        AddActionCommand *cmd = new AddActionCommand(formWindow());
        cmd->init(action);
        formWindow()->commandHistory()->push(cmd);
    }
}

static inline bool isSameIcon(const QIcon &i1, const QIcon &i2)
{
    return i1.serialNumber() == i2.serialNumber();
}

// return a FormWindow command to apply an icon
static QDesignerFormWindowCommand *setIconPropertyCommand(const QIcon &newIcon, QAction *action, QDesignerFormWindowInterface *fw)
{
    const QString iconProperty = QLatin1String("icon");
    if (newIcon.isNull()) {
        ResetPropertyCommand *cmd = new ResetPropertyCommand(fw);
        cmd->init(action, iconProperty);
        return cmd;
    }
    SetPropertyCommand *cmd = new SetPropertyCommand(fw);
    cmd->init(action, iconProperty, newIcon);
    return cmd;
}

static QDesignerFormWindowCommand *setTextPropertyCommand(const QString &propertyName, const QString &text, QAction *action, QDesignerFormWindowInterface *fw)
{
    if (text.isEmpty()) {
        ResetPropertyCommand *cmd = new ResetPropertyCommand(fw);
        cmd->init(action, propertyName);
        return cmd;
    }
    SetPropertyCommand *cmd = new SetPropertyCommand(fw);
    cmd->init(action, propertyName, text);
    return cmd;
}

void ActionEditor::editAction(QListWidgetItem *item)
{
    if (!item)
        return;

    QAction *action = itemToAction(item);
    if (action == 0)
        return;

    NewActionDialog dlg(this);
    dlg.setWindowTitle(tr("Edit action"));
    dlg.setActionData(action->text(), action->objectName(), action->icon());

    if (!dlg.exec())
        return;

    // figure out changes and whether to start a macro
    enum ChangedMask { NameChanged = 1, TextChanged = 2 , IconChanged = 4 };
    const QString newName = dlg.actionName();
    const QString newText = dlg.actionText();
    const QIcon newIcon = dlg.actionIcon();

    int changedMask = 0;

    if (newName != action->objectName())
        changedMask |= NameChanged;
    if (newText != action->text())
        changedMask |= TextChanged;
    if (!isSameIcon(newIcon, action->icon()))
        changedMask |= IconChanged;

    if (!changedMask)
        return;

    const bool severalChanges = (changedMask != NameChanged) && (changedMask != TextChanged) && (changedMask != IconChanged);
    if (severalChanges)
        formWindow()->beginCommand(QLatin1String("Edit action"));

    if (changedMask & NameChanged)
        formWindow()->commandHistory()->push(setTextPropertyCommand(QLatin1String("objectName"), newName, action, formWindow()));

    if (changedMask & TextChanged)
        formWindow()->commandHistory()->push(setTextPropertyCommand(QLatin1String("text"), newText, action, formWindow()));

    if (changedMask & IconChanged)
        formWindow()->commandHistory()->push(setIconPropertyCommand(newIcon, action, formWindow()));

    if (severalChanges)
        formWindow()->endCommand();

}

void ActionEditor::slotDeleteAction()
{
    QListWidgetItem *item = m_actionRepository->currentItem();
    if (item == 0)
        return;

    QAction *action = itemToAction(item);
    if (action == 0)
        return;

    RemoveActionCommand *cmd = new RemoveActionCommand(formWindow());
    cmd->init(action);
    formWindow()->commandHistory()->push(cmd);
}

void ActionEditor::slotNotImplemented()
{
    QMessageBox::information(this, tr("Designer"), tr("Feature not implemented!"));
}

QString ActionEditor::actionTextToName(const QString &text, const QString &prefix)
{
    QString name = text;
    if (name.isEmpty())
        return QString();

    name[0] = name.at(0).toUpper();
    name.prepend(prefix);
    const QString underscore = QString(QLatin1Char('_'));
    name.replace(QRegExp(QString(QLatin1String("[^a-zA-Z_0-9]"))), underscore);
    name.replace(QRegExp(QLatin1String("__*")), underscore);
    if (name.endsWith(underscore.at(0)))
        name.truncate(name.size() - 1);

    return name;
}

void  ActionEditor::resourceImageDropped(const ResourceMimeData &data, QAction *action)
{
    QDesignerFormWindowInterface *fw =  formWindow();
    if (!fw)
        return;

    const QIcon icon = resourceMimeDataToIcon(data, fw);

    if (icon.isNull() || isSameIcon(icon, action->icon()))
        return;

    fw->commandHistory()->push(setIconPropertyCommand(icon , action, fw));
}

void ActionEditor::mainContainerChanged()
{
    // Invalidate references to objects kept in model
    if (sender() == formWindow())
        setFormWindow(0);
}
} // namespace qdesigner_internal

#include "actioneditor.moc"