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-rw-r--r--src/declarative/qml/qdeclarativecomponent.cpp20
-rw-r--r--src/declarative/qml/qdeclarativedeclarativedata_p.h17
-rw-r--r--src/declarative/qml/qdeclarativeengine.cpp62
-rw-r--r--src/declarative/qml/qdeclarativeengine.h4
-rw-r--r--src/declarative/qml/qdeclarativeobjectscriptclass.cpp65
-rw-r--r--src/declarative/qml/qdeclarativeobjectscriptclass_p.h3
-rw-r--r--src/declarative/qml/qdeclarativevme.cpp2
7 files changed, 150 insertions, 23 deletions
diff --git a/src/declarative/qml/qdeclarativecomponent.cpp b/src/declarative/qml/qdeclarativecomponent.cpp
index d6bb216..d3608c4 100644
--- a/src/declarative/qml/qdeclarativecomponent.cpp
+++ b/src/declarative/qml/qdeclarativecomponent.cpp
@@ -512,7 +512,6 @@ QDeclarativeComponent::QDeclarativeComponent(QDeclarativeComponentPrivate &dd, Q
{
}
-
/*!
\internal
A version of create which returns a scriptObject, for use in script
@@ -526,7 +525,9 @@ QScriptValue QDeclarativeComponent::createObject()
return QScriptValue();
}
QObject* ret = create(ctxt);
- return QDeclarativeEnginePrivate::qmlScriptObject(ret, d->engine);
+ QDeclarativeEnginePrivate *priv = QDeclarativeEnginePrivate::get(d->engine);
+ QDeclarativeDeclarativeData::get(ret, true)->setImplicitDestructible();
+ return priv->objectClass->newQObject(ret, QMetaType::QObjectStar);
}
/*!
@@ -541,7 +542,12 @@ QObject *QDeclarativeComponent::create(QDeclarativeContext *context)
{
Q_D(QDeclarativeComponent);
- return d->create(context, QBitField());
+ if (!context)
+ context = d->engine->rootContext();
+
+ QObject *rv = beginCreate(context);
+ completeCreate();
+ return rv;
}
QObject *QDeclarativeComponentPrivate::create(QDeclarativeContext *context,
@@ -586,7 +592,13 @@ QObject *QDeclarativeComponentPrivate::create(QDeclarativeContext *context,
QObject *QDeclarativeComponent::beginCreate(QDeclarativeContext *context)
{
Q_D(QDeclarativeComponent);
- return d->beginCreate(context, QBitField());
+ QObject *rv = d->beginCreate(context, QBitField());
+ if (rv) {
+ QDeclarativeDeclarativeData *ddata = QDeclarativeDeclarativeData::get(rv);
+ Q_ASSERT(ddata);
+ ddata->indestructible = true;
+ }
+ return rv;
}
QObject *
diff --git a/src/declarative/qml/qdeclarativedeclarativedata_p.h b/src/declarative/qml/qdeclarativedeclarativedata_p.h
index ae40130..ffce9c9 100644
--- a/src/declarative/qml/qdeclarativedeclarativedata_p.h
+++ b/src/declarative/qml/qdeclarativedeclarativedata_p.h
@@ -67,12 +67,21 @@ class Q_AUTOTEST_EXPORT QDeclarativeDeclarativeData : public QDeclarativeData
{
public:
QDeclarativeDeclarativeData(QDeclarativeContext *ctxt = 0)
- : context(ctxt), bindings(0), nextContextObject(0), prevContextObject(0),
- bindingBitsSize(0), bindingBits(0), outerContext(0), lineNumber(0),
- columnNumber(0), deferredComponent(0), deferredIdx(0), attachedProperties(0),
- propertyCache(0), guards(0) {}
+ : indestructible(true), explicitIndestructibleSet(false), context(ctxt),
+ bindings(0), nextContextObject(0), prevContextObject(0), bindingBitsSize(0), bindingBits(0),
+ outerContext(0), lineNumber(0), columnNumber(0), deferredComponent(0), deferredIdx(0),
+ attachedProperties(0), propertyCache(0), guards(0) {}
virtual void destroyed(QObject *);
+ virtual void parentChanged(QObject *, QObject *);
+
+ void setImplicitDestructible() {
+ if (!explicitIndestructibleSet) indestructible = false;
+ }
+
+ quint32 indestructible:1;
+ quint32 explicitIndestructibleSet:1;
+ quint32 dummy:29;
QDeclarativeContext *context;
QDeclarativeAbstractBinding *bindings;
diff --git a/src/declarative/qml/qdeclarativeengine.cpp b/src/declarative/qml/qdeclarativeengine.cpp
index 41d55d7..791df9f 100644
--- a/src/declarative/qml/qdeclarativeengine.cpp
+++ b/src/declarative/qml/qdeclarativeengine.cpp
@@ -668,6 +668,59 @@ void QDeclarativeEngine::setContextForObject(QObject *object, QDeclarativeContex
context->d_func()->contextObjects = data;
}
+/*!
+\enum QDeclarativeEngine::ObjectOwnership
+
+Ownership controls whether or not QML automatically destroys the QObject when the object
+is garbage collected by the JavaScript engine. The two ownership options are:
+
+\o CppOwnership The object is owned by C++ code, and will never be deleted by QML. The
+JavaScript destroy() method cannot be used on objects with CppOwnership. This option
+is similar to QScriptEngine::QtOwnership.
+
+\o JavaScriptOwnership The object is owned by JavaScript. When the object is returned to QML
+as the return value of a method call or property access, QML will delete the object if there
+are no remaining JavaScript references to it and it has no QObject::parent(). This option
+is similar to QScriptEngine::ScriptOwnership.
+
+Generally an application doesn't need to set an object's ownership explicitly. QML uses
+a heuristic to set the default object ownership. By default, an object that is created by
+QML has JavaScriptOwnership. The exception to this are the root objects created by calling
+QDeclarativeCompnent::create() or QDeclarativeComponent::beginCreate() which have
+CppOwnership by default. The ownership of these root-level objects is considered to have
+been transfered to the C++ caller.
+
+Objects not-created by QML have CppOwnership by default. The exception to this is objects
+returned from a C++ method call. The ownership of these objects is passed to JavaScript.
+
+Calling setObjectOwnership() overrides the default ownership heuristic used by QML.
+*/
+
+/*!
+Sets the \a ownership of \a object.
+*/
+void QDeclarativeEngine::setObjectOwnership(QObject *object, ObjectOwnership ownership)
+{
+ QDeclarativeDeclarativeData *ddata = QDeclarativeDeclarativeData::get(object, true);
+ if (!ddata)
+ return;
+
+ ddata->indestructible = (ownership == CppOwnership)?true:false;
+ ddata->explicitIndestructibleSet = true;
+}
+
+/*!
+Returns the ownership of \a object.
+*/
+QDeclarativeEngine::ObjectOwnership QDeclarativeEngine::objectOwnership(QObject *object)
+{
+ QDeclarativeDeclarativeData *ddata = QDeclarativeDeclarativeData::get(object, false);
+ if (!ddata)
+ return CppOwnership;
+ else
+ return ddata->indestructible?CppOwnership:JavaScriptOwnership;
+}
+
void qmlExecuteDeferred(QObject *object)
{
QDeclarativeDeclarativeData *data = QDeclarativeDeclarativeData::get(object);
@@ -778,6 +831,11 @@ void QDeclarativeDeclarativeData::destroyed(QObject *object)
delete this;
}
+void QDeclarativeDeclarativeData::parentChanged(QObject *, QObject *parent)
+{
+ if (!parent && scriptValue.isValid()) scriptValue = QScriptValue();
+}
+
bool QDeclarativeDeclarativeData::hasBindingBit(int bit) const
{
if (bindingBitsSize > bit)
@@ -858,6 +916,7 @@ QScriptValue QDeclarativeEnginePrivate::createComponent(QScriptContext *ctxt,
QUrl url = QUrl(context->resolvedUrl(QUrl(arg)));
QDeclarativeComponent *c = new QDeclarativeComponent(activeEngine, url, activeEngine);
c->setCreationContext(context);
+ QDeclarativeDeclarativeData::get(c, true)->setImplicitDestructible();
return activeEnginePriv->objectClass->newQObject(c, qMetaTypeId<QDeclarativeComponent*>());
}
}
@@ -928,7 +987,8 @@ QScriptValue QDeclarativeEnginePrivate::createQmlObject(QScriptContext *ctxt, QS
if(gobj && gparent)
gobj->setParentItem(gparent);
- return qmlScriptObject(obj, activeEngine);
+ QDeclarativeDeclarativeData::get(obj, true)->setImplicitDestructible();
+ return activeEnginePriv->objectClass->newQObject(obj, QMetaType::QObjectStar);
}
QScriptValue QDeclarativeEnginePrivate::vector(QScriptContext *ctxt, QScriptEngine *engine)
diff --git a/src/declarative/qml/qdeclarativeengine.h b/src/declarative/qml/qdeclarativeengine.h
index fd66358..19e81b6 100644
--- a/src/declarative/qml/qdeclarativeengine.h
+++ b/src/declarative/qml/qdeclarativeengine.h
@@ -98,6 +98,10 @@ public:
static QDeclarativeContext *contextForObject(const QObject *);
static void setContextForObject(QObject *, QDeclarativeContext *);
+ enum ObjectOwnership { CppOwnership, JavaScriptOwnership };
+ static void setObjectOwnership(QObject *, ObjectOwnership);
+ static ObjectOwnership objectOwnership(QObject *);
+
Q_SIGNALS:
void quit ();
diff --git a/src/declarative/qml/qdeclarativeobjectscriptclass.cpp b/src/declarative/qml/qdeclarativeobjectscriptclass.cpp
index e6f6e5f..3ca03b4 100644
--- a/src/declarative/qml/qdeclarativeobjectscriptclass.cpp
+++ b/src/declarative/qml/qdeclarativeobjectscriptclass.cpp
@@ -59,6 +59,15 @@ QT_BEGIN_NAMESPACE
struct ObjectData : public QScriptDeclarativeClass::Object {
ObjectData(QObject *o, int t) : object(o), type(t) {}
+
+ virtual ~ObjectData() {
+ if (object && !object->parent()) {
+ QDeclarativeDeclarativeData *ddata = QDeclarativeDeclarativeData::get(object, false);
+ if (ddata && !ddata->indestructible)
+ object->deleteLater();
+ }
+ }
+
QDeclarativeGuard<QObject> object;
int type;
};
@@ -87,7 +96,7 @@ QDeclarativeObjectScriptClass::~QDeclarativeObjectScriptClass()
{
}
-QScriptValue QDeclarativeObjectScriptClass::newQObject(QObject *object, int type)
+QScriptValue QDeclarativeObjectScriptClass::newQObject(QObject *object, int type)
{
QScriptEngine *scriptEngine = QDeclarativeEnginePrivate::getScriptEngine(engine);
@@ -96,7 +105,11 @@ QScriptValue QDeclarativeObjectScriptClass::newQObject(QObject *object, int type
QDeclarativeDeclarativeData *ddata = QDeclarativeDeclarativeData::get(object, true);
- if (!ddata->scriptValue.isValid()) {
+ if (!ddata) {
+ return scriptEngine->undefinedValue();
+ } else if (!ddata->indestructible && !object->parent()) {
+ return newObject(scriptEngine, this, new ObjectData(object, type));
+ } else if (!ddata->scriptValue.isValid()) {
ddata->scriptValue = newObject(scriptEngine, this, new ObjectData(object, type));
return ddata->scriptValue;
} else if (ddata->scriptValue.engine() == QDeclarativeEnginePrivate::getScriptEngine(engine)) {
@@ -392,17 +405,30 @@ QScriptValue QDeclarativeObjectScriptClass::tostring(QScriptContext *context, QS
QScriptValue QDeclarativeObjectScriptClass::destroy(QScriptContext *context, QScriptEngine *engine)
{
- QObject* obj = context->thisObject().toQObject();
- if(obj){
- int delay = 0;
- if(context->argumentCount() > 0)
- delay = context->argument(0).toInt32();
- if (delay > 0)
- QTimer::singleShot(delay, obj, SLOT(deleteLater()));
- else
- obj->deleteLater();
- }
- return engine->nullValue();
+ QDeclarativeEnginePrivate *p = QDeclarativeEnginePrivate::get(engine);
+ QScriptValue that = context->thisObject();
+
+ if (scriptClass(that) != p->objectClass)
+ return engine->undefinedValue();
+
+ ObjectData *data = (ObjectData *)p->objectClass->object(that);
+ if (!data->object)
+ return engine->undefinedValue();
+
+ QDeclarativeDeclarativeData *ddata = QDeclarativeDeclarativeData::get(data->object, false);
+ if (!ddata || ddata->indestructible)
+ return engine->currentContext()->throwError(QLatin1String("Invalid attempt to destroy() an indestructible object"));
+
+ QObject *obj = data->object;
+ int delay = 0;
+ if (context->argumentCount() > 0)
+ delay = context->argument(0).toInt32();
+ if (delay > 0)
+ QTimer::singleShot(delay, obj, SLOT(deleteLater()));
+ else
+ obj->deleteLater();
+
+ return engine->undefinedValue();
}
QStringList QDeclarativeObjectScriptClass::propertyNames(Object *object)
@@ -428,6 +454,14 @@ QStringList QDeclarativeObjectScriptClass::propertyNames(Object *object)
return cache->propertyNames();
}
+bool QDeclarativeObjectScriptClass::compare(Object *o1, Object *o2)
+{
+ ObjectData *d1 = (ObjectData *)o1;
+ ObjectData *d2 = (ObjectData *)o2;
+
+ return d1 == d2 || d1->object == d2->object;
+}
+
#if (QT_VERSION > QT_VERSION_CHECK(4, 6, 2)) || defined(QT_HAVE_QSCRIPTDECLARATIVECLASS_VALUE)
struct MethodData : public QScriptDeclarativeClass::Object {
@@ -685,7 +719,10 @@ QScriptDeclarativeClass::Value MetaCallArgument::toValue(QDeclarativeEngine *e)
} else if (type == QMetaType::QString) {
return QScriptDeclarativeClass::Value(engine, *((QString *)data));
} else if (type == QMetaType::QObjectStar) {
- return QScriptDeclarativeClass::Value(engine, QDeclarativeEnginePrivate::get(e)->objectClass->newQObject(*((QObject **)data)));
+ QObject *object = *((QObject **)data);
+ QDeclarativeDeclarativeData::get(object, true)->setImplicitDestructible();
+ QDeclarativeEnginePrivate *priv = QDeclarativeEnginePrivate::get(e);
+ return QScriptDeclarativeClass::Value(engine, priv->objectClass->newQObject(object));
} else if (type == -1 || type == qMetaTypeId<QVariant>()) {
return QScriptDeclarativeClass::Value(engine, QDeclarativeEnginePrivate::get(e)->scriptValueFromVariant(*((QVariant *)data)));
} else {
diff --git a/src/declarative/qml/qdeclarativeobjectscriptclass_p.h b/src/declarative/qml/qdeclarativeobjectscriptclass_p.h
index 04e760f..1f7d1c9 100644
--- a/src/declarative/qml/qdeclarativeobjectscriptclass_p.h
+++ b/src/declarative/qml/qdeclarativeobjectscriptclass_p.h
@@ -57,6 +57,7 @@
#include "qdeclarativetypenamecache_p.h"
#include <private/qdeclarativescriptclass_p.h>
+#include <QtScript/qscriptengine.h>
QT_BEGIN_NAMESPACE
@@ -99,6 +100,7 @@ public:
~QDeclarativeObjectScriptClass();
QScriptValue newQObject(QObject *, int type = QMetaType::QObjectStar);
+
QObject *toQObject(const QScriptValue &) const;
int objectType(const QScriptValue &) const;
@@ -118,6 +120,7 @@ public:
void setProperty(QObject *, const Identifier &name, const QScriptValue &,
QDeclarativeContext *evalContext = 0);
virtual QStringList propertyNames(Object *);
+ virtual bool compare(Object *, Object *);
protected:
virtual QScriptClass::QueryFlags queryProperty(Object *, const Identifier &,
diff --git a/src/declarative/qml/qdeclarativevme.cpp b/src/declarative/qml/qdeclarativevme.cpp
index 6a08674..d916900 100644
--- a/src/declarative/qml/qdeclarativevme.cpp
+++ b/src/declarative/qml/qdeclarativevme.cpp
@@ -197,6 +197,7 @@ QObject *QDeclarativeVME::run(QDeclarativeVMEStack<QObject *> &stack, QDeclarati
QDeclarativeDeclarativeData *ddata = QDeclarativeDeclarativeData::get(o);
Q_ASSERT(ddata);
+ ddata->setImplicitDestructible();
ddata->outerContext = ctxt;
ddata->lineNumber = instr.line;
ddata->columnNumber = instr.create.column;
@@ -247,6 +248,7 @@ QObject *QDeclarativeVME::run(QDeclarativeVMEStack<QObject *> &stack, QDeclarati
QDeclarativeEngine::setContextForObject(qcomp, ctxt);
QDeclarativeDeclarativeData *ddata = QDeclarativeDeclarativeData::get(qcomp);
Q_ASSERT(ddata);
+ ddata->setImplicitDestructible();
ddata->outerContext = ctxt;
ddata->lineNumber = instr.line;
ddata->columnNumber = instr.create.column;
generated by cgit v0.12 at 2025-01-15 04:02:17 (GMT)