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Diffstat (limited to 'src/quick/designer/qquickdesignercustomobjectdata.cpp')
| -rw-r--r-- | src/quick/designer/qquickdesignercustomobjectdata.cpp | 286 |
1 files changed, 286 insertions, 0 deletions
diff --git a/src/quick/designer/qquickdesignercustomobjectdata.cpp b/src/quick/designer/qquickdesignercustomobjectdata.cpp new file mode 100644 index 0000000000..7f074d8341 --- /dev/null +++ b/src/quick/designer/qquickdesignercustomobjectdata.cpp @@ -0,0 +1,286 @@ +/**************************************************************************** +** +** Copyright (C) 2015 The Qt Company Ltd. +** Contact: http://www.qt.io/licensing/ +** +** This file is part of the QtQuick module of the Qt Toolkit. +** +** $QT_BEGIN_LICENSE:LGPL21$ +** Commercial License Usage +** Licensees holding valid commercial Qt licenses may use this file in +** accordance with the commercial license agreement provided with the +** Software or, alternatively, in accordance with the terms contained in +** a written agreement between you and The Qt Company. For licensing terms +** and conditions see http://www.qt.io/terms-conditions. For further +** information use the contact form at http://www.qt.io/contact-us. +** +** GNU Lesser General Public License Usage +** Alternatively, this file may be used under the terms of the GNU Lesser +** General Public License version 2.1 or version 3 as published by the Free +** Software Foundation and appearing in the file LICENSE.LGPLv21 and +** LICENSE.LGPLv3 included in the packaging of this file. Please review the +** following information to ensure the GNU Lesser General Public License +** requirements will be met: https://www.gnu.org/licenses/lgpl.html and +** http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html. +** +** As a special exception, The Qt Company gives you certain additional +** rights. These rights are described in The Qt Company LGPL Exception +** version 1.1, included in the file LGPL_EXCEPTION.txt in this package. +** +** $QT_END_LICENSE$ +** +****************************************************************************/ + +#include "qquickdesignersupportmetainfo_p.h" +#include "qquickdesignersupportproperties_p.h" + +#include "qquickdesignercustomobjectdata_p.h" + +#include <QGlobalStatic> +#include <QQmlContext> +#include <QQmlEngine> + +#include <private/qqmlbinding_p.h> + +QT_BEGIN_NAMESPACE + +typedef QHash<QObject*, QQuickDesignerCustomObjectData*> CustomObjectDataHash; +Q_GLOBAL_STATIC(CustomObjectDataHash, s_designerObjectToDataHash) + +struct HandleDestroyedFunctor { + QQuickDesignerCustomObjectData *data; + void operator()() { data->handleDestroyed(); } +}; + +QQuickDesignerCustomObjectData::QQuickDesignerCustomObjectData(QObject *object) + : m_object(object) +{ + if (object) { + populateResetHashes(); + s_designerObjectToDataHash()->insert(object, this); + + HandleDestroyedFunctor functor; + functor.data = this; + QObject::connect(object, &QObject::destroyed, functor); + } +} + +void QQuickDesignerCustomObjectData::registerData(QObject *object) +{ + new QQuickDesignerCustomObjectData(object); +} + +QQuickDesignerCustomObjectData *QQuickDesignerCustomObjectData::get(QObject *object) +{ + return s_designerObjectToDataHash()->value(object); +} + +QVariant QQuickDesignerCustomObjectData::getResetValue(QObject *object, const QQuickDesignerSupport::PropertyName &propertyName) +{ + QQuickDesignerCustomObjectData* data = get(object); + + if (data) + return data->getResetValue(propertyName); + + return QVariant(); +} + +void QQuickDesignerCustomObjectData::doResetProperty(QObject *object, QQmlContext *context, const QQuickDesignerSupport::PropertyName &propertyName) +{ + QQuickDesignerCustomObjectData* data = get(object); + + if (data) + data->doResetProperty(context, propertyName); +} + +bool QQuickDesignerCustomObjectData::hasValidResetBinding(QObject *object, const QQuickDesignerSupport::PropertyName &propertyName) +{ + QQuickDesignerCustomObjectData* data = get(object); + + if (data) + return data->hasValidResetBinding(propertyName); + + return false; +} + +bool QQuickDesignerCustomObjectData::hasBindingForProperty(QObject *object, + QQmlContext *context, + const QQuickDesignerSupport::PropertyName &propertyName, + bool *hasChanged) +{ + QQuickDesignerCustomObjectData* data = get(object); + + if (data) + return data->hasBindingForProperty(context, propertyName, hasChanged); + + return false; +} + +void QQuickDesignerCustomObjectData::setPropertyBinding(QObject *object, + QQmlContext *context, + const QQuickDesignerSupport::PropertyName &propertyName, + const QString &expression) +{ + QQuickDesignerCustomObjectData* data = get(object); + + if (data) + data->setPropertyBinding(context, propertyName, expression); +} + +void QQuickDesignerCustomObjectData::keepBindingFromGettingDeleted(QObject *object, + QQmlContext *context, + const QQuickDesignerSupport::PropertyName &propertyName) +{ + QQuickDesignerCustomObjectData* data = get(object); + + if (data) + data->keepBindingFromGettingDeleted(context, propertyName); +} + +void QQuickDesignerCustomObjectData::populateResetHashes() +{ + QQuickDesignerSupport::PropertyNameList propertyNameList = + QQuickDesignerSupportProperties::propertyNameListForWritableProperties(object()); + + Q_FOREACH (const QQuickDesignerSupport::PropertyName &propertyName, propertyNameList) { + QQmlProperty property(object(), QString::fromUtf8(propertyName), QQmlEngine::contextForObject(object())); + + QQmlAbstractBinding::Ptr binding = QQmlAbstractBinding::Ptr(QQmlPropertyPrivate::binding(property)); + + if (binding) { + m_resetBindingHash.insert(propertyName, binding); + } else if (property.isWritable()) { + m_resetValueHash.insert(propertyName, property.read()); + } + } +} + +QObject *QQuickDesignerCustomObjectData::object() const +{ + return m_object; +} + +QVariant QQuickDesignerCustomObjectData::getResetValue(const QQuickDesignerSupport::PropertyName &propertyName) const +{ + return m_resetValueHash.value(propertyName); +} + +void QQuickDesignerCustomObjectData::doResetProperty(QQmlContext *context, const QQuickDesignerSupport::PropertyName &propertyName) +{ + QQmlProperty property(object(), QString::fromUtf8(propertyName), context); + + if (!property.isValid()) + return; + + QQmlAbstractBinding *binding = QQmlPropertyPrivate::binding(property); + if (binding && !(hasValidResetBinding(propertyName) && getResetBinding(propertyName) == binding)) { + binding->setEnabled(false, 0); + } + + + if (hasValidResetBinding(propertyName)) { + QQmlAbstractBinding *binding = getResetBinding(propertyName); + +#if defined(QT_NO_DYNAMIC_CAST) + QQmlBinding *qmlBinding = static_cast<QQmlBinding*>(binding); +#else + QQmlBinding *qmlBinding = dynamic_cast<QQmlBinding*>(binding); +#endif + if (qmlBinding) + qmlBinding->setTarget(property); + QQmlPropertyPrivate::setBinding(binding, QQmlPropertyPrivate::None, QQmlPropertyPrivate::DontRemoveBinding); + if (qmlBinding) + qmlBinding->update(); + + } else if (property.isResettable()) { + property.reset(); + } else if (property.propertyTypeCategory() == QQmlProperty::List) { + QQmlListReference list = qvariant_cast<QQmlListReference>(property.read()); + + if (!QQuickDesignerSupportProperties::hasFullImplementedListInterface(list)) { + qWarning() << "Property list interface not fully implemented for Class " << property.property().typeName() << " in property " << property.name() << "!"; + return; + } + + list.clear(); + } else if (property.isWritable()) { + if (property.read() == getResetValue(propertyName)) + return; + + property.write(getResetValue(propertyName)); + } +} + +bool QQuickDesignerCustomObjectData::hasValidResetBinding(const QQuickDesignerSupport::PropertyName &propertyName) const +{ + return m_resetBindingHash.contains(propertyName) && m_resetBindingHash.value(propertyName).data(); +} + +QQmlAbstractBinding *QQuickDesignerCustomObjectData::getResetBinding(const QQuickDesignerSupport::PropertyName &propertyName) const +{ + return m_resetBindingHash.value(propertyName).data(); +} + +bool QQuickDesignerCustomObjectData::hasBindingForProperty(QQmlContext *context, + const QQuickDesignerSupport::PropertyName &propertyName, + bool *hasChanged) const +{ + if (QQuickDesignerSupportProperties::isPropertyBlackListed(propertyName)) + return false; + + QQmlProperty property(object(), QString::fromUtf8(propertyName), context); + + bool hasBinding = QQmlPropertyPrivate::binding(property); + + if (hasChanged) { + *hasChanged = hasBinding != m_hasBindingHash.value(propertyName, false); + if (*hasChanged) + m_hasBindingHash.insert(propertyName, hasBinding); + } + + return QQmlPropertyPrivate::binding(property); +} + +void QQuickDesignerCustomObjectData::setPropertyBinding(QQmlContext *context, + const QQuickDesignerSupport::PropertyName &propertyName, + const QString &expression) +{ + QQmlProperty property(object(), QString::fromUtf8(propertyName), context); + + if (!property.isValid()) + return; + + if (property.isProperty()) { + QQmlBinding *binding = new QQmlBinding(expression, object(), context); + binding->setTarget(property); + binding->setNotifyOnValueChanged(true); + + QQmlPropertyPrivate::setBinding(binding, QQmlPropertyPrivate::None, QQmlPropertyPrivate::DontRemoveBinding); + //Refcounting is taking take care of deletion + binding->update(); + if (binding->hasError()) { + if (property.property().userType() == QVariant::String) + property.write(QVariant(QLatin1Char('#') + expression + QLatin1Char('#'))); + } + + } else { + qWarning() << Q_FUNC_INFO << ": Cannot set binding for property" << propertyName << ": property is unknown for type"; + } +} + +void QQuickDesignerCustomObjectData::keepBindingFromGettingDeleted(QQmlContext *context, + const QQuickDesignerSupport::PropertyName &propertyName) +{ + //Refcounting is taking care + Q_UNUSED(context) + Q_UNUSED(propertyName) +} + +void QQuickDesignerCustomObjectData::handleDestroyed() +{ + s_designerObjectToDataHash()->remove(m_object); + delete this; +} + +QT_END_NAMESPACE + |