Allow objectName to be used in QML bindings

Task-number: QTBUG-13999

4 files changed, 66 insertions, 13 deletions

diff --git a/src/declarative/qml/qdeclarativedata_p.h b/src/declarative/qml/qdeclarativedata_p.h
index c7857b7..def4188 100644
--- a/src/declarative/qml/qdeclarativedata_p.h
+++ b/src/declarative/qml/qdeclarativedata_p.h
@@ -64,6 +64,7 @@ class QDeclarativeAbstractBinding;
 class QDeclarativeContext;
 class QDeclarativePropertyCache;
 class QDeclarativeContextData;
+class QDeclarativeNotifier;
 // This class is structured in such a way, that simply zero'ing it is the
 // default state for elemental object allocations.  This is crucial in the
 // workings of the QDeclarativeInstruction::CreateSimpleObject instruction.
@@ -75,7 +76,7 @@ public:
         : ownMemory(true), ownContext(false), indestructible(true), explicitIndestructibleSet(false), 
           context(0), outerContext(0), bindings(0), nextContextObject(0), prevContextObject(0), bindingBitsSize(0), 
           bindingBits(0), lineNumber(0), columnNumber(0), deferredComponent(0), deferredIdx(0), 
-          attachedProperties(0), scriptValue(0), objectDataRefCount(0), propertyCache(0), guards(0) { 
+          scriptValue(0), objectDataRefCount(0), propertyCache(0), guards(0), extendedData(0) {
           init(); 
       }
 
@@ -91,6 +92,7 @@ public:
 
     void destroyed(QObject *);
     void parentChanged(QObject *, QObject *);
+    void objectNameChanged(QObject *);
 
     void setImplicitDestructible() {
         if (!explicitIndestructibleSet) indestructible = false;
@@ -125,8 +127,6 @@ public:
     QDeclarativeCompiledData *deferredComponent; // Can't this be found from the context?
     unsigned int deferredIdx;
 
-    QHash<int, QObject *> *attachedProperties;
-
     // ### Can we make this QScriptValuePrivate so we incur no additional allocation
     // cost?
     QScriptValue *scriptValue;
@@ -149,6 +149,18 @@ public:
             return 0;
         }
     }
+
+    QDeclarativeNotifier *objectNameNotifier() const;
+    QHash<int, QObject *> *attachedProperties() const;
+
+    struct ExtendedData {
+        ExtendedData();
+        ~ExtendedData();
+
+        QHash<int, QObject *> attachedProperties;
+        void *objectNameNotifier;
+    };
+    mutable ExtendedData *extendedData;
 };
 
 template<class T>
diff --git a/src/declarative/qml/qdeclarativeengine.cpp b/src/declarative/qml/qdeclarativeengine.cpp
index dfc29c4..7ed925a 100644
--- a/src/declarative/qml/qdeclarativeengine.cpp
+++ b/src/declarative/qml/qdeclarativeengine.cpp
@@ -68,6 +68,7 @@
 #include "private/qdeclarativelist_p.h"
 #include "private/qdeclarativetypenamecache_p.h"
 #include "private/qdeclarativeinclude_p.h"
+#include "private/qdeclarativenotifier_p.h"
 
 #include <QtCore/qmetaobject.h>
 #include <QScriptClass>
@@ -470,6 +471,7 @@ void QDeclarativeData::parentChanged(QAbstractDeclarativeData *d, QObject *o, QO
 
 void QDeclarativeData::objectNameChanged(QAbstractDeclarativeData *d, QObject *o)
 {
+    static_cast<QDeclarativeData *>(d)->objectNameChanged(o);
 }
 
 void QDeclarativeEnginePrivate::init()
@@ -953,7 +955,7 @@ QObject *qmlAttachedPropertiesObjectById(int id, const QObject *object, bool cre
     if (!data)
         return 0; // Attached properties are only on objects created by QML
 
-    QObject *rv = data->attachedProperties?data->attachedProperties->value(id):0;
+    QObject *rv = data->extendedData?data->attachedProperties()->value(id):0;
     if (rv || !create)
         return rv;
 
@@ -963,11 +965,8 @@ QObject *qmlAttachedPropertiesObjectById(int id, const QObject *object, bool cre
 
     rv = pf(const_cast<QObject *>(object));
 
-    if (rv) {
-        if (!data->attachedProperties)
-            data->attachedProperties = new QHash<int, QObject *>();
-        data->attachedProperties->insert(id, rv);
-    }
+    if (rv) 
+        data->attachedProperties()->insert(id, rv);
 
     return rv;
 }
@@ -988,8 +987,6 @@ void QDeclarativeData::destroyed(QObject *object)
 {
     if (deferredComponent)
         deferredComponent->release();
-    if (attachedProperties)
-        delete attachedProperties;
 
     if (nextContextObject)
         nextContextObject->prevContextObject = prevContextObject;
@@ -1023,6 +1020,9 @@ void QDeclarativeData::destroyed(QObject *object)
     if (scriptValue)
         delete scriptValue;
 
+    if (extendedData)
+        delete extendedData;
+
     if (ownMemory)
         delete this;
 }
@@ -1032,6 +1032,11 @@ void QDeclarativeData::parentChanged(QObject *, QObject *parent)
     if (!parent && scriptValue) { delete scriptValue; scriptValue = 0; }
 }
 
+void QDeclarativeData::objectNameChanged(QObject *)
+{
+    if (extendedData) objectNameNotifier()->notify();
+}
+
 bool QDeclarativeData::hasBindingBit(int bit) const
 {
     if (bindingBitsSize > bit)
@@ -1068,6 +1073,28 @@ void QDeclarativeData::setBindingBit(QObject *obj, int bit)
     bindingBits[bit / 32] |= (1 << (bit % 32));
 }
 
+QDeclarativeData::ExtendedData::ExtendedData()
+: objectNameNotifier(0)
+{
+}
+
+QDeclarativeData::ExtendedData::~ExtendedData()
+{
+    ((QDeclarativeNotifier *)&objectNameNotifier)->~QDeclarativeNotifier();
+}
+
+QDeclarativeNotifier *QDeclarativeData::objectNameNotifier() const
+{
+    if (!extendedData) extendedData = new ExtendedData;
+    return (QDeclarativeNotifier *)&extendedData->objectNameNotifier;
+}
+
+QHash<int, QObject *> *QDeclarativeData::attachedProperties() const
+{
+    if (!extendedData) extendedData = new ExtendedData;
+    return &extendedData->attachedProperties;
+}
+
 /*!
     Creates a QScriptValue allowing you to use \a object in QML script.
     \a engine is the QDeclarativeEngine it is to be created in.
diff --git a/src/declarative/qml/qdeclarativefastproperties.cpp b/src/declarative/qml/qdeclarativefastproperties.cpp
index eb69b6a..78e3afd 100644
--- a/src/declarative/qml/qdeclarativefastproperties.cpp
+++ b/src/declarative/qml/qdeclarativefastproperties.cpp
@@ -51,10 +51,19 @@ QT_BEGIN_NAMESPACE
 // primarily read from bindings is a candidate for inclusion as a fast 
 // property.
 
+static void QObject_objectName(QObject *object, void *output, QDeclarativeNotifierEndpoint *endpoint)
+{
+    if (endpoint) 
+        endpoint->connect(QDeclarativeData::get(object, true)->objectNameNotifier());
+    *((QString *)output) = object->objectName();
+}
+
 QDeclarativeFastProperties::QDeclarativeFastProperties()
 {
     add(&QDeclarativeItem::staticMetaObject, QDeclarativeItem::staticMetaObject.indexOfProperty("parent"),
         QDeclarativeItemPrivate::parentProperty);
+    add(&QObject::staticMetaObject, QObject::staticMetaObject.indexOfProperty("objectName"),
+        QObject_objectName);    
 }
 
 int QDeclarativeFastProperties::accessorIndexForProperty(const QMetaObject *metaObject, int propertyIndex)
diff --git a/src/declarative/qml/qdeclarativeobjectscriptclass.cpp b/src/declarative/qml/qdeclarativeobjectscriptclass.cpp
index ab6ff74..61a1f55 100644
--- a/src/declarative/qml/qdeclarativeobjectscriptclass.cpp
+++ b/src/declarative/qml/qdeclarativeobjectscriptclass.cpp
@@ -239,8 +239,13 @@ QDeclarativeObjectScriptClass::property(QObject *obj, const Identifier &name)
         }
     } else {
         if (enginePriv->captureProperties && !(lastData->flags & QDeclarativePropertyCache::Data::IsConstant)) {
-            enginePriv->capturedProperties <<
-                QDeclarativeEnginePrivate::CapturedProperty(obj, lastData->coreIndex, lastData->notifyIndex);
+            if (lastData->coreIndex == 0) {
+                enginePriv->capturedProperties <<
+                    QDeclarativeEnginePrivate::CapturedProperty(QDeclarativeData::get(obj, true)->objectNameNotifier());
+            } else {
+                enginePriv->capturedProperties <<
+                    QDeclarativeEnginePrivate::CapturedProperty(obj, lastData->coreIndex, lastData->notifyIndex);
+            }
         }
 
         if (QDeclarativeValueTypeFactory::isValueType((uint)lastData->propType)) {