Introduces QMetaEnum::fromType

Change-Id: I1976c1844e52ef8d70a1bbe9945f3299428dbf87
Reviewed-by: Lars Knoll <lars.knoll@digia.com>
Reviewed-by: Shawn Rutledge <shawn.rutledge@digia.com>

2 files changed, 17 insertions, 0 deletions

diff --git a/src/corelib/kernel/qmetaobject.cpp b/src/corelib/kernel/qmetaobject.cpp
index 3e2fb46143..1af0914ad8 100644
--- a/src/corelib/kernel/qmetaobject.cpp
+++ b/src/corelib/kernel/qmetaobject.cpp
@@ -2677,6 +2677,14 @@ QByteArray QMetaEnum::valueToKeys(int value) const
     return keys;
 }
 
+/*!
+    \fn QMetaEnum QMetaEnum::fromType() const
+    \since 5.5
+
+    Returns the QMetaEnum corresponding to the type in the template parameter.
+    The enum needs to be declared with Q_ENUM.
+*/
+
 static QByteArray qualifiedName(const QMetaEnum &e)
 {
     return QByteArray(e.scope()) + "::" + e.name();
diff --git a/src/corelib/kernel/qmetaobject.h b/src/corelib/kernel/qmetaobject.h
index fdbcf5171d..eaef05f03d 100644
--- a/src/corelib/kernel/qmetaobject.h
+++ b/src/corelib/kernel/qmetaobject.h
@@ -223,6 +223,15 @@ public:
     inline const QMetaObject *enclosingMetaObject() const { return mobj; }
 
     inline bool isValid() const { return name() != 0; }
+
+    template<typename T> static QMetaEnum fromType() {
+        Q_STATIC_ASSERT_X(QtPrivate::IsQEnumHelper<T>::Value,
+                          "QMetaEnum::fromType only works with enums declared as Q_ENUM or Q_FLAG");
+        const QMetaObject *metaObject = qt_getEnumMetaObject(T());
+        const char *name = qt_getEnumName(T());
+        return metaObject->enumerator(metaObject->indexOfEnumerator(name));
+    }
+
 private:
     const QMetaObject *mobj;
     uint handle;