qdesigner_propertycommand.cpp

来自「奇趣公司比较新的qt/emd版本」· C++ 代码 · 共 1,210 行 · 第 1/4 页

    m_newValue = newValue;

    if(debugPropertyCommands)
        qDebug() << "SetPropertyCommand::init()" << propertyHelperList().size() << '/' << list.size();

    setDescription();

    m_subPropertyMask = subPropertyMask(newValue, referenceObject);
    return true;
}

unsigned SetPropertyCommand::subPropertyMask(const QVariant &newValue, QObject *referenceObject)
{
    // figure out the mask of changed sub properties when comparing newValue to the current value of the reference object.
    if (!referenceObject)
        return SubPropertyAll;

    QDesignerPropertySheetExtension* sheet = propertySheet(referenceObject);
    Q_ASSERT(sheet);

    const int index = sheet->indexOf(propertyName());
    if (index == -1 || !sheet->isVisible(index))
        return SubPropertyAll;

    return compareSubProperties(sheet->property(index), newValue, specialProperty());
}

void SetPropertyCommand::setDescription()
{
    if (propertyHelperList().size() == 1) {
        setText(QApplication::translate("Command", "changed '%1' of '%2'").arg(propertyName()).arg(propertyHelperList()[0].object()->objectName()));
    } else {
        int count = propertyHelperList().size();
        setText(QApplication::translate("Command", "changed '%1' of %2 objects", "", QCoreApplication::UnicodeUTF8, count).arg(propertyName()).arg(count));
    }
}

void SetPropertyCommand::redo()
{
    update(setValue(m_newValue, true, m_subPropertyMask));
    QDesignerPropertyEditor *designerPropertyEditor = qobject_cast<QDesignerPropertyEditor *>(core()->propertyEditor());
    if (designerPropertyEditor)
        designerPropertyEditor->updatePropertySheet();
}


int SetPropertyCommand::id() const
{
    return 1976;
}

bool SetPropertyCommand::mergeWith(const QUndoCommand *other)
{
    if (id() != other->id() || !formWindow()->isDirty())
        return false;

    // Merging: When  for example when the user types ahead in an inplace-editor,
    // it makes sense to merge all the generated commands containing the one-character changes.
    // In the case of subproperties, if the user changes the font size from 10 to 30 via 20
    // and then changes to bold, it makes sense to merge the font size commands only.
    // This is why the m_subPropertyMask is checked.

    const SetPropertyCommand *cmd = static_cast<const SetPropertyCommand*>(other);
    if (!propertyDescription().equals(cmd->propertyDescription()) ||
        m_subPropertyMask  != cmd->m_subPropertyMask ||
        !canMergeLists(cmd->propertyHelperList()))
        return false;

    m_newValue = cmd->newValue();
    m_subPropertyMask |= cmd->m_subPropertyMask;
    if(debugPropertyCommands)
        qDebug() << "SetPropertyCommand::mergeWith() succeeded " << propertyName();

    return true;
}

// ---- ResetPropertyCommand ----
ResetPropertyCommand::ResetPropertyCommand(QDesignerFormWindowInterface *formWindow)
    : PropertyListCommand(formWindow)
{
}

bool ResetPropertyCommand::init(QObject *object, const QString &apropertyName)
{
    Q_ASSERT(object);

    propertyHelperList().clear();
    if (!add(object, apropertyName))
        return false;

    setDescription();
    return true;
}

bool ResetPropertyCommand::init(const ObjectList &list, const QString &apropertyName, QObject *referenceObject)
{
    if (!initList(list, apropertyName, referenceObject))
        return false;

    if(debugPropertyCommands)
        qDebug() << "ResetPropertyCommand::init()" << propertyHelperList().size() << '/' << list.size();

    setDescription();
    return true;
}

void ResetPropertyCommand::setDescription()
{
    if (propertyHelperList().size() == 1) {
        setText(QApplication::translate("Command", "reset '%1' of '%2'").arg(propertyName()).arg(propertyHelperList()[0].object()->objectName()));
    } else {
        int count = propertyHelperList().size();
        setText(QApplication::translate("Command", "reset '%1' of %2 objects", "", QCoreApplication::UnicodeUTF8, count).arg(propertyName()).arg(count));
    }
}

void ResetPropertyCommand::redo()
{
    update(restoreDefaultValue());
    QDesignerPropertyEditor *designerPropertyEditor = qobject_cast<QDesignerPropertyEditor *>(core()->propertyEditor());
    if (designerPropertyEditor)
        designerPropertyEditor->updatePropertySheet();
}

AddDynamicPropertyCommand::AddDynamicPropertyCommand(QDesignerFormWindowInterface *formWindow)
    : QDesignerFormWindowCommand(QString(), formWindow)
{

}

bool AddDynamicPropertyCommand::init(const QList<QObject *> &selection, QObject *current,
            const QString &propertyName, const QVariant &value)
{
    Q_ASSERT(current);
    m_propertyName = propertyName;

    QDesignerFormEditorInterface *core = formWindow()->core();
    QDesignerDynamicPropertySheetExtension *dynamicSheet = qt_extension<QDesignerDynamicPropertySheetExtension*>(core->extensionManager(), current);
    Q_ASSERT(dynamicSheet);

    m_selection.clear();

    if (!value.isValid())
        return false;

    if (!dynamicSheet->canAddDynamicProperty(m_propertyName))
        return false;

    m_selection.append(current);

    m_value = value;

    QListIterator<QObject *> it(selection);
    while (it.hasNext()) {
        QObject *obj = it.next();
        if (m_selection.contains(obj))
            continue;
        dynamicSheet = qt_extension<QDesignerDynamicPropertySheetExtension*>(core->extensionManager(), obj);
        Q_ASSERT(dynamicSheet);
        if (dynamicSheet->canAddDynamicProperty(m_propertyName))
            m_selection.append(obj);
    }

    setDescription();
    return true;
}

void AddDynamicPropertyCommand::redo()
{
    QDesignerFormEditorInterface *core = formWindow()->core();
    QListIterator<QObject *> it(m_selection);
    while (it.hasNext()) {
        QObject *obj = it.next();
        QDesignerDynamicPropertySheetExtension *dynamicSheet = qt_extension<QDesignerDynamicPropertySheetExtension*>(core->extensionManager(), obj);
        dynamicSheet->addDynamicProperty(m_propertyName, m_value);
        if (QDesignerPropertyEditorInterface *propertyEditor = formWindow()->core()->propertyEditor()) {
            if (propertyEditor->object() == obj)
                propertyEditor->setObject(obj);
        }
    }
}

void AddDynamicPropertyCommand::undo()
{
    QDesignerFormEditorInterface *core = formWindow()->core();
    QListIterator<QObject *> it(m_selection);
    while (it.hasNext()) {
        QObject *obj = it.next();
        QDesignerPropertySheetExtension *sheet = qt_extension<QDesignerPropertySheetExtension*>(core->extensionManager(), obj);
        QDesignerDynamicPropertySheetExtension *dynamicSheet = qt_extension<QDesignerDynamicPropertySheetExtension*>(core->extensionManager(), obj);
        dynamicSheet->removeDynamicProperty(sheet->indexOf(m_propertyName));
        if (QDesignerPropertyEditorInterface *propertyEditor = formWindow()->core()->propertyEditor()) {
            if (propertyEditor->object() == obj)
                propertyEditor->setObject(obj);
        }
    }
}

void AddDynamicPropertyCommand::setDescription()
{
    if (m_selection.size() == 1) {
        setText(QApplication::translate("Command", "add dynamic property '%1' to '%2'").arg(m_propertyName).arg(m_selection.first()->objectName()));
    } else {
        int count = m_selection.size();
        setText(QApplication::translate("Command", "add dynamic property '%1' to %2 objects", "", QCoreApplication::UnicodeUTF8, count).arg(m_propertyName).arg(count));
    }
}


RemoveDynamicPropertyCommand::RemoveDynamicPropertyCommand(QDesignerFormWindowInterface *formWindow)
    : QDesignerFormWindowCommand(QString(), formWindow)
{

}

bool RemoveDynamicPropertyCommand::init(const QList<QObject *> &selection, QObject *current,
            const QString &propertyName)
{
    Q_ASSERT(current);
    m_propertyName = propertyName;

    QDesignerFormEditorInterface *core = formWindow()->core();
    QDesignerPropertySheetExtension *propertySheet = qt_extension<QDesignerPropertySheetExtension*>(core->extensionManager(), current);
    Q_ASSERT(propertySheet);
    QDesignerDynamicPropertySheetExtension *dynamicSheet = qt_extension<QDesignerDynamicPropertySheetExtension*>(core->extensionManager(), current);
    Q_ASSERT(dynamicSheet);

    m_objectToValueAndChanged.clear();

    const int index = propertySheet->indexOf(m_propertyName);
    if (!dynamicSheet->isDynamicProperty(index))
        return false;

    m_objectToValueAndChanged[current] = qMakePair(propertySheet->property(index), propertySheet->isChanged(index));

    QListIterator<QObject *> it(selection);
    while (it.hasNext()) {
        QObject *obj = it.next();
        if (m_objectToValueAndChanged.contains(obj))
            continue;

        propertySheet = qt_extension<QDesignerPropertySheetExtension*>(core->extensionManager(), obj);
        dynamicSheet = qt_extension<QDesignerDynamicPropertySheetExtension*>(core->extensionManager(), obj);
        const int idx = propertySheet->indexOf(m_propertyName);
        if (dynamicSheet->isDynamicProperty(idx))
            m_objectToValueAndChanged[obj] = qMakePair(propertySheet->property(idx), propertySheet->isChanged(idx));
    }

    setDescription();
    return true;
}

void RemoveDynamicPropertyCommand::redo()
{
    QDesignerFormEditorInterface *core = formWindow()->core();
    QMap<QObject *, QPair<QVariant, bool> >::ConstIterator it = m_objectToValueAndChanged.constBegin();
    while (it != m_objectToValueAndChanged.constEnd()) {
        QObject *obj = it.key();
        QDesignerDynamicPropertySheetExtension *dynamicSheet = qt_extension<QDesignerDynamicPropertySheetExtension*>(core->extensionManager(), obj);
        QDesignerPropertySheetExtension *sheet = qt_extension<QDesignerPropertySheetExtension*>(core->extensionManager(), obj);
        dynamicSheet->removeDynamicProperty(sheet->indexOf(m_propertyName));
        if (QDesignerPropertyEditorInterface *propertyEditor = formWindow()->core()->propertyEditor()) {
            if (propertyEditor->object() == obj)
                propertyEditor->setObject(obj);
        }
        ++it;
    }
}

void RemoveDynamicPropertyCommand::undo()
{
    QDesignerFormEditorInterface *core = formWindow()->core();
    QMap<QObject *, QPair<QVariant, bool> >::ConstIterator it = m_objectToValueAndChanged.constBegin();
    while (it != m_objectToValueAndChanged.constEnd()) {
        QObject *obj = it.key();
        QDesignerPropertySheetExtension *propertySheet = qt_extension<QDesignerPropertySheetExtension*>(core->extensionManager(), obj);
        QDesignerDynamicPropertySheetExtension *dynamicSheet = qt_extension<QDesignerDynamicPropertySheetExtension*>(core->extensionManager(), obj);
        const int index = dynamicSheet->addDynamicProperty(m_propertyName, it.value().first);
        propertySheet->setChanged(index, it.value().second);
        if (QDesignerPropertyEditorInterface *propertyEditor = formWindow()->core()->propertyEditor()) {
            if (propertyEditor->object() == obj)
                propertyEditor->setObject(obj);
        }
        ++it;
    }
}

void RemoveDynamicPropertyCommand::setDescription()
{
    if (m_objectToValueAndChanged.size() == 1) {
        setText(QApplication::translate("Command", "remove dynamic property '%1' from '%2'").arg(m_propertyName).arg(m_objectToValueAndChanged.constBegin().key()->objectName()));
    } else {
        int count = m_objectToValueAndChanged.size();
        setText(QApplication::translate("Command", "remove dynamic property '%1' from %2 objects", "", QCoreApplication::UnicodeUTF8, count).arg(m_propertyName).arg(count));
    }
}


} // namespace qdesigner_internal