C++ PropertyName::isNull方法代码示例

本文整理汇总了C++中PropertyName::isNull方法的典型用法代码示例。如果您正苦于以下问题：C++ PropertyName::isNull方法的具体用法？C++ PropertyName::isNull怎么用？C++ PropertyName::isNull使用的例子？那么, 这里精选的方法代码示例或许可以为您提供帮助。您也可以进一步了解该方法所在类PropertyName的用法示例。

在下文中一共展示了PropertyName::isNull方法的4个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于系统推荐出更棒的C++代码示例。

示例1:

void LazyClassStructure::Initializer::setConstructor(PropertyName propertyName, JSObject* constructor)
{
    RELEASE_ASSERT(structure);
    RELEASE_ASSERT(prototype);
    RELEASE_ASSERT(!this->constructor);
    
    this->constructor = constructor;

    prototype->putDirectWithoutTransition(vm, vm.propertyNames->constructor, constructor, DontEnum);
    if (!propertyName.isNull())
        global->putDirect(vm, propertyName, constructor, DontEnum);
    classStructure.m_constructor.set(vm, global, constructor);
}

开发者ID:，项目名称:，代码行数:13，代码来源:

示例2: changeExpression

void PropertyEditorView::changeExpression(const QString &propertyName)
{
    PropertyName name = propertyName.toUtf8();

    if (name.isNull())
        return;

    if (m_locked)
        return;

    if (!m_selectedNode.isValid())
        return;

    RewriterTransaction transaction = beginRewriterTransaction(QByteArrayLiteral("PropertyEditorView::changeExpression"));

    try {
        PropertyName underscoreName(name);
        underscoreName.replace('.', '_');

        QmlObjectNode qmlObjectNode(m_selectedNode);
        PropertyEditorValue *value = m_qmlBackEndForCurrentType->propertyValueForName(underscoreName);

        if (!value) {
            qWarning() << "PropertyEditor::changeExpression no value for " << underscoreName;
            return;
        }

        if (qmlObjectNode.modelNode().metaInfo().isValid() && qmlObjectNode.modelNode().metaInfo().hasProperty(name)) {
            if (qmlObjectNode.modelNode().metaInfo().propertyTypeName(name) == "QColor") {
                if (QColor(value->expression().remove('"')).isValid()) {
                    qmlObjectNode.setVariantProperty(name, QColor(value->expression().remove('"')));
                    transaction.commit(); //committing in the try block
                    return;
                }
            } else if (qmlObjectNode.modelNode().metaInfo().propertyTypeName(name) == "bool") {
                if (value->expression().compare("false", Qt::CaseInsensitive) == 0 || value->expression().compare("true", Qt::CaseInsensitive) == 0) {
                    if (value->expression().compare("true", Qt::CaseInsensitive) == 0)
                        qmlObjectNode.setVariantProperty(name, true);
                    else
                        qmlObjectNode.setVariantProperty(name, false);
                    transaction.commit(); //committing in the try block
                    return;
                }
            } else if (qmlObjectNode.modelNode().metaInfo().propertyTypeName(name) == "int") {
                bool ok;
                int intValue = value->expression().toInt(&ok);
                if (ok) {
                    qmlObjectNode.setVariantProperty(name, intValue);
                    transaction.commit(); //committing in the try block
                    return;
                }
            } else if (qmlObjectNode.modelNode().metaInfo().propertyTypeName(name) == "qreal") {
                bool ok;
                qreal realValue = value->expression().toFloat(&ok);
                if (ok) {
                    qmlObjectNode.setVariantProperty(name, realValue);
                    transaction.commit(); //committing in the try block
                    return;
                }
            }
        }

        if (value->expression().isEmpty())
            return;

        if (qmlObjectNode.expression(name) != value->expression() || !qmlObjectNode.propertyAffectedByCurrentState(name))
            qmlObjectNode.setBindingProperty(name, value->expression());

        transaction.commit(); //committing in the try block
    }

    catch (const RewritingException &e) {
        e.showException();
    }
}

开发者ID:KeeganRen，项目名称:qt-creator，代码行数:75，代码来源:propertyeditorview.cpp

示例3: changeValue

void PropertyEditorView::changeValue(const QString &name)
{
    PropertyName propertyName = name.toUtf8();

    if (propertyName.isNull())
        return;

    if (m_locked)
        return;

    if (propertyName == "type")
        return;

    if (!m_selectedNode.isValid())
        return;

    if (propertyName == "id") {
        PropertyEditorValue *value = m_qmlBackEndForCurrentType->propertyValueForName(propertyName);
        const QString newId = value->value().toString();

        if (newId == m_selectedNode.id())
            return;

        if (m_selectedNode.isValidId(newId)  && !hasId(newId)) {
            m_selectedNode.setIdWithRefactoring(newId);
        } else {
            m_locked = true;
            value->setValue(m_selectedNode.id());
            m_locked = false;
            if (!m_selectedNode.isValidId(newId))
                Core::AsynchronousMessageBox::warning(tr("Invalid Id"),  tr("%1 is an invalid id.").arg(newId));
            else
                Core::AsynchronousMessageBox::warning(tr("Invalid Id"),  tr("%1 already exists.").arg(newId));
        }
        return;
    }

    PropertyName underscoreName(propertyName);
    underscoreName.replace('.', '_');
    PropertyEditorValue *value = m_qmlBackEndForCurrentType->propertyValueForName(underscoreName);

    if (value ==0)
        return;

    QmlObjectNode qmlObjectNode(m_selectedNode);

    QVariant castedValue;

    if (qmlObjectNode.modelNode().metaInfo().isValid() && qmlObjectNode.modelNode().metaInfo().hasProperty(propertyName)) {
        castedValue = qmlObjectNode.modelNode().metaInfo().propertyCastedValue(propertyName, value->value());
    } else if (propertyIsAttachedLayoutProperty(propertyName)) {
        castedValue = value->value();
    } else {
        qWarning() << "PropertyEditor:" <<propertyName << "cannot be casted (metainfo)";
        return ;
    }

    if (value->value().isValid() && !castedValue.isValid()) {
        qWarning() << "PropertyEditor:" << propertyName << "not properly casted (metainfo)";
        return ;
    }

    if (qmlObjectNode.modelNode().metaInfo().isValid() && qmlObjectNode.modelNode().metaInfo().hasProperty(propertyName))
        if (qmlObjectNode.modelNode().metaInfo().propertyTypeName(propertyName) == "QUrl"
                || qmlObjectNode.modelNode().metaInfo().propertyTypeName(propertyName) == "url") { //turn absolute local file paths into relative paths
            QString filePath = castedValue.toUrl().toString();
        if (QFileInfo(filePath).exists() && QFileInfo(filePath).isAbsolute()) {
            QDir fileDir(QFileInfo(model()->fileUrl().toLocalFile()).absolutePath());
            castedValue = QUrl(fileDir.relativeFilePath(filePath));
        }
    }

        if (castedValue.type() == QVariant::Color) {
            QColor color = castedValue.value<QColor>();
            QColor newColor = QColor(color.name());
            newColor.setAlpha(color.alpha());
            castedValue = QVariant(newColor);
        }

        try {
            if (!value->value().isValid()) { //reset
                qmlObjectNode.removeProperty(propertyName);
            } else {
                if (castedValue.isValid() && !castedValue.isNull()) {
                    m_locked = true;
                    qmlObjectNode.setVariantProperty(propertyName, castedValue);
                    m_locked = false;
                }
            }
        }
        catch (const RewritingException &e) {
            e.showException();
        }
}

开发者ID:KeeganRen，项目名称:qt-creator，代码行数:94，代码来源:propertyeditorview.cpp

示例4: changeValue

void PropertyEditorView::changeValue(const QString &name)
{
    PropertyName propertyName = name.toUtf8();

    if (propertyName.isNull())
        return;

    if (m_locked)
        return;

    if (propertyName == "type")
        return;

    if (!m_selectedNode.isValid())
        return;

    if (propertyName == "id") {
        PropertyEditorValue *value = m_qmlBackEndForCurrentType->propertyValueForName(propertyName);
        const QString newId = value->value().toString();

        if (newId == m_selectedNode.id())
            return;

        if (m_selectedNode.isValidId(newId)  && !modelNodeForId(newId).isValid() ) {
            if (m_selectedNode.id().isEmpty() || newId.isEmpty()) { //no id
                try {
                    m_selectedNode.setId(newId);
                } catch (InvalidIdException &e) { //better save then sorry
                    m_locked = true;
                    value->setValue(m_selectedNode.id());
                    m_locked = false;
                    QMessageBox::warning(0, tr("Invalid Id"), e.description());
                }
            } else { //there is already an id, so we refactor
                if (rewriterView())
                    rewriterView()->renameId(m_selectedNode.id(), newId);
            }
        } else {
            m_locked = true;
            value->setValue(m_selectedNode.id());
            m_locked = false;
            if (!m_selectedNode.isValidId(newId))
                QMessageBox::warning(0, tr("Invalid Id"),  tr("%1 is an invalid id.").arg(newId));
            else
                QMessageBox::warning(0, tr("Invalid Id"),  tr("%1 already exists.").arg(newId));
        }
        return;
    }

    //.replace(QLatin1Char('.'), QLatin1Char('_'))
    PropertyName underscoreName(propertyName);
    underscoreName.replace('.', '_');
    PropertyEditorValue *value = m_qmlBackEndForCurrentType->propertyValueForName(underscoreName);

    if (value ==0)
        return;

    QmlObjectNode qmlObjectNode(m_selectedNode);

    QVariant castedValue;

    if (qmlObjectNode.modelNode().metaInfo().isValid() && qmlObjectNode.modelNode().metaInfo().hasProperty(propertyName)) {
        castedValue = qmlObjectNode.modelNode().metaInfo().propertyCastedValue(propertyName, value->value());
    } else {
        qWarning() << "PropertyEditor:" <<propertyName << "cannot be casted (metainfo)";
        return ;
    }

    if (value->value().isValid() && !castedValue.isValid()) {
        qWarning() << "PropertyEditor:" << propertyName << "not properly casted (metainfo)";
        return ;
    }

    if (qmlObjectNode.modelNode().metaInfo().isValid() && qmlObjectNode.modelNode().metaInfo().hasProperty(propertyName))
        if (qmlObjectNode.modelNode().metaInfo().propertyTypeName(propertyName) == "QUrl"
                || qmlObjectNode.modelNode().metaInfo().propertyTypeName(propertyName) == "url") { //turn absolute local file paths into relative paths
            QString filePath = castedValue.toUrl().toString();
        if (QFileInfo(filePath).exists() && QFileInfo(filePath).isAbsolute()) {
            QDir fileDir(QFileInfo(model()->fileUrl().toLocalFile()).absolutePath());
            castedValue = QUrl(fileDir.relativeFilePath(filePath));
        }
    }

        if (castedValue.type() == QVariant::Color) {
            QColor color = castedValue.value<QColor>();
            QColor newColor = QColor(color.name());
            newColor.setAlpha(color.alpha());
            castedValue = QVariant(newColor);
        }

        try {
            if (!value->value().isValid()) { //reset
                qmlObjectNode.removeProperty(propertyName);
            } else {
                if (castedValue.isValid() && !castedValue.isNull()) {
                    m_locked = true;
                    qmlObjectNode.setVariantProperty(propertyName, castedValue);
                    m_locked = false;
                }
            }
//.........这里部分代码省略.........

开发者ID:darksylinc，项目名称:qt-creator，代码行数:101，代码来源:propertyeditorview.cpp

注：本文中的PropertyName::isNull方法示例由纯净天空整理自Github/MSDocs等开源代码及文档管理平台，相关代码片段筛选自各路编程大神贡献的开源项目，源码版权归原作者所有，传播和使用请参考对应项目的License；未经允许，请勿转载。