v4: Get rid of dependency on QQuickAnchorLine type

Delegate the meta-type id query and value comparison to
QDeclarativeMetaType.

Register a comparison function for QQuickAnchorLine in
QQuickItemsModule, so that not even QDeclarativeMetaType needs to
know the type declaration. (This is needed in order to be able to
move the items to a separate library.)

Change-Id: I6404d01b74143946ae0a79fa18d1777b675e4194
Reviewed-by: Roberto Raggi <roberto.raggi@nokia.com>

1 files changed, 9 insertions, 0 deletions

diff --git a/src/declarative/items/qquickitemsmodule.cpp b/src/declarative/items/qquickitemsmodule.cpp
index 0a04e884ae..fd9f4f8719 100644
--- a/src/declarative/items/qquickitemsmodule.cpp
+++ b/src/declarative/items/qquickitemsmodule.cpp
@@ -81,6 +81,7 @@
 #include "qquickdrag_p.h"
 #include "qquickdroparea_p.h"
 #include "qquickmultipointtoucharea_p.h"
+#include <private/qdeclarativemetatype_p.h>
 
 static QDeclarativePrivate::AutoParentResult qquickitem_autoParent(QObject *obj, QObject *parent)
 {
@@ -96,6 +97,13 @@ static QDeclarativePrivate::AutoParentResult qquickitem_autoParent(QObject *obj,
     return QDeclarativePrivate::Parented;
 }
 
+static bool compareQQuickAnchorLines(const void *p1, const void *p2)
+{
+    const QQuickAnchorLine &l1 = *static_cast<const QQuickAnchorLine*>(p1);
+    const QQuickAnchorLine &l2 = *static_cast<const QQuickAnchorLine*>(p2);
+    return l1 == l2;
+}
+
 static void qt_quickitems_defineModule(const char *uri, int major, int minor)
 {
     QDeclarativePrivate::RegisterAutoParent autoparent = { 0, &qquickitem_autoParent };
@@ -168,6 +176,7 @@ static void qt_quickitems_defineModule(const char *uri, int major, int minor)
     qmlRegisterType<QQuickPen>();
     qmlRegisterType<QQuickFlickableVisibleArea>();
     qRegisterMetaType<QQuickAnchorLine>("QQuickAnchorLine");
+    QDeclarativeMetaType::setQQuickAnchorLineCompareFunction(compareQQuickAnchorLines);
 
     qmlRegisterUncreatableType<QQuickKeyNavigationAttached>(uri,major,minor,"KeyNavigation",QQuickKeyNavigationAttached::tr("KeyNavigation is only available via attached properties"));
     qmlRegisterUncreatableType<QQuickKeysAttached>(uri,major,minor,"Keys",QQuickKeysAttached::tr("Keys is only available via attached properties"));