本文整理汇总了C++中QDeclarativeListReference::clear方法的典型用法代码示例。如果您正苦于以下问题：C++ QDeclarativeListReference::clear方法的具体用法？C++ QDeclarativeListReference::clear怎么用？C++ QDeclarativeListReference::clear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QDeclarativeListReference的用法示例。
在下文中一共展示了QDeclarativeListReference::clear方法的6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: insertObjectInListProperty
bool insertObjectInListProperty(QDeclarativeListReference &fromList, int position, QObject *object)
{
QList<QObject *> tmpList;
int i;
if (!(fromList.canCount() && fromList.canAt() && fromList.canAppend() && fromList.canClear()))
return false;
if (position == fromList.count()) {
fromList.append(object);
return true;
}
for (i=0; i<fromList.count(); ++i)
tmpList << fromList.at(i);
fromList.clear();
for (i=0; i<position; ++i)
fromList.append(tmpList.at(i));
fromList.append(object);
for (; i<tmpList.count(); ++i)
fromList.append(tmpList.at(i));
return true;
}示例2: clear
void tst_qdeclarativelistreference::clear()
{
TestType *tt = new TestType;
tt->data.append(tt);
tt->data.append(0);
tt->data.append(tt);
{
QDeclarativeListReference ref;
QVERIFY(ref.clear() == false);
}
{
QDeclarativeListReference ref(tt, "blah");
QVERIFY(ref.clear() == false);
}
{
QDeclarativeListReference ref(tt, "data");
QVERIFY(ref.clear() == true);
QVERIFY(tt->data.count() == 0);
delete tt;
QVERIFY(ref.clear() == false);
}
{
TestType tt;
tt.property.clear = 0;
QDeclarativeListReference ref(&tt, "data");
QVERIFY(ref.clear() == false);
}
}示例3: qmllistreference_invalid
void tst_qdeclarativelistreference::qmllistreference_invalid()
{
TestType tt;
// Invalid
{
QDeclarativeListReference r;
QVERIFY(r.isValid() == false);
QVERIFY(r.object() == 0);
QVERIFY(r.listElementType() == 0);
QVERIFY(r.canAt() == false);
QVERIFY(r.canClear() == false);
QVERIFY(r.canCount() == false);
QVERIFY(r.append(0) == false);
QVERIFY(r.at(10) == 0);
QVERIFY(r.clear() == false);
QVERIFY(r.count() == 0);
}
// Non-property
{
QDeclarativeListReference r(&tt, "blah");
QVERIFY(r.isValid() == false);
QVERIFY(r.object() == 0);
QVERIFY(r.listElementType() == 0);
QVERIFY(r.canAt() == false);
QVERIFY(r.canClear() == false);
QVERIFY(r.canCount() == false);
QVERIFY(r.append(0) == false);
QVERIFY(r.at(10) == 0);
QVERIFY(r.clear() == false);
QVERIFY(r.count() == 0);
}
// Non-list property
{
QDeclarativeListReference r(&tt, "intProperty");
QVERIFY(r.isValid() == false);
QVERIFY(r.object() == 0);
QVERIFY(r.listElementType() == 0);
QVERIFY(r.canAt() == false);
QVERIFY(r.canClear() == false);
QVERIFY(r.canCount() == false);
QVERIFY(r.append(0) == false);
QVERIFY(r.at(10) == 0);
QVERIFY(r.clear() == false);
QVERIFY(r.count() == 0);
}
}示例4: deleteObjectsInList
void ObjectNodeInstance::deleteObjectsInList(const QDeclarativeProperty &property)
{
QObjectList objectList;
QDeclarativeListReference list = qvariant_cast<QDeclarativeListReference>(property.read());
if (!hasFullImplementedListInterface(list)) {
qWarning() << "Property list interface not fully implemented for Class " << property.property().typeName() << " in property " << property.name() << "!";
return;
}
for(int i = 0; i < list.count(); i++) {
objectList += list.at(i);
}
list.clear();
}示例5: removeObjectFromListProperty
bool removeObjectFromListProperty(QDeclarativeListReference &fromList, QObject *object)
{
QList<QObject *> tmpList;
int i;
if (!(fromList.canCount() && fromList.canAt() && fromList.canAppend() && fromList.canClear()))
return false;
for (i=0; i<fromList.count(); ++i)
if (object != fromList.at(i))
tmpList << fromList.at(i);
fromList.clear();
foreach (QObject *item, tmpList)
fromList.append(item);
return true;
}示例6: doResetProperty
void ObjectNodeInstance::doResetProperty(const QString &propertyName)
{
m_modelAbstractPropertyHash.remove(propertyName);
QDeclarativeProperty property(object(), propertyName, context());
if (!property.isValid())
return;
QVariant oldValue = property.read();
if (oldValue.type() == QVariant::Url) {
QUrl url = oldValue.toUrl();
QString path = url.toLocalFile();
if (QFileInfo(path).exists() && nodeInstanceView())
nodeInstanceView()->removeFilePropertyFromFileSystemWatcher(object(), propertyName, path);
}
QDeclarativeAbstractBinding *binding = QDeclarativePropertyPrivate::binding(property);
if (binding) {
binding->setEnabled(false, 0);
binding->destroy();
}
if (property.isResettable()) {
property.reset();
} else if (property.propertyTypeCategory() == QDeclarativeProperty::List) {
QDeclarativeListReference list = qvariant_cast<QDeclarativeListReference>(property.read());
if (!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() == resetValue(propertyName))
return;
property.write(resetValue(propertyName));
}
}