QmlDesigner: Call all Component complete handlers

We have to ensure to properly call all Component complete handlers.
A single component usually has QQmlComponentAttached objects,
which we have to iterate over.

Therefore emitComponentCompleteSignalForAttachedProperty() is not correct.

Task-number: QDS-269
Change-Id: I4aed5d511f9f6e21f72efb955fc6db21b70e7c42
Reviewed-by: Tim Jenssen <tim.jenssen@qt.io>

share/qtcreator/qml/qmlpuppet/qml2puppet/instances/quickitemnodeinstance.cpp

@@ -195,7 +195,7 @@ void QuickItemNodeInstance::doComponentComplete()
 
     QmlPrivateGate::disableTextCursor(quickItem());
 
-    DesignerSupport::emitComponentCompleteSignalForAttachedProperty(quickItem());
+    QmlPrivateGate::emitComponentComplete(quickItem());
 
     QQmlProperty contentItemProperty(quickItem(), "contentItem", engine());
     if (contentItemProperty.isValid())

share/qtcreator/qml/qmlpuppet/qmlprivategate/qmlprivategate.h

@@ -85,6 +85,7 @@ public:
     void setPropertyBinding(QObject *object, QQmlContext *context, const PropertyName &propertyName, const QString &expression);
     void keepBindingFromGettingDeleted(QObject *object, QQmlContext *context, const PropertyName &propertyName);
 
+    void emitComponentComplete(QObject *item);
     void doComponentCompleteRecursive(QObject *object, NodeInstanceServer *nodeInstanceServer);
 
     bool objectWasDeleted(QObject *object);

share/qtcreator/qml/qmlpuppet/qmlprivategate/qmlprivategate_56.cpp

@@ -44,6 +44,8 @@
 #include <private/qquickdesignersupportproperties_p.h>
 #include <private/qquickdesignersupportpropertychanges_p.h>
 #include <private/qquickdesignersupportstates_p.h>
+#include <private/qqmldata_p.h>
+#include <private/qqmlcomponentattached_p.h>
 
 namespace QmlDesigner {
 
@@ -216,6 +218,24 @@ void setPropertyBinding(QObject *object, QQmlContext *context, const PropertyNam
     QQuickDesignerSupportProperties::setPropertyBinding(object, context, propertyName, expression);
 }
 
+void emitComponentComplete(QObject *item)
+{
+    if (!item)
+        return;
+
+    QQmlData *data = QQmlData::get(item);
+    if (data && data->context) {
+        QQmlComponentAttached *componentAttached = data->context->componentAttached;
+        while (componentAttached) {
+            if (componentAttached->parent())
+                if (componentAttached->parent() == item)
+                    emit componentAttached->completed();
+
+            componentAttached = componentAttached->next;
+        }
+    }
+}
+
 void doComponentCompleteRecursive(QObject *object, NodeInstanceServer *nodeInstanceServer)
 {
     if (object) {
@@ -224,6 +244,8 @@ void doComponentCompleteRecursive(QObject *object, NodeInstanceServer *nodeInsta
         if (item && DesignerSupport::isComponentComplete(item))
             return;
 
+        if (!nodeInstanceServer->hasInstanceForObject(item))
+            emitComponentComplete(object);
         QList<QObject*> childList = object->children();
 
         if (item) {