Add CONSTANT attribute to Q_PROPERTY()

This will be used by the declarative module to determine if a property lacking a NOTIFY signal is truly constant, or just missing a NOTIFY signal.

Reviewed-by: Roberto Raggi

2 files changed, 30 insertions, 1 deletions

diff --git a/src/corelib/kernel/qmetaobject.cpp b/src/corelib/kernel/qmetaobject.cpp
index 08cecaf..fee2da9 100644
--- a/src/corelib/kernel/qmetaobject.cpp
+++ b/src/corelib/kernel/qmetaobject.cpp
@@ -159,7 +159,9 @@ enum PropertyFlags  {
     ResolveEditable = 0x00080000,
     User = 0x00100000,
     ResolveUser = 0x00200000,
-    Notify = 0x00400000
+    Notify = 0x00400000,
+    Dynamic = 0x00800000,
+    Constant = 0x00000400
 };
 
 enum MethodFlags  {
@@ -2439,6 +2441,31 @@ bool QMetaProperty::isUser(const QObject *object) const
 }
 
 /*!
+    \internal
+*/
+bool QMetaProperty::isDynamic() const
+{
+    if (!mobj)
+        return false;
+    int flags = mobj->d.data[handle + 2];
+    return flags & Dynamic;
+}
+
+/*!
+    Returns true if the property is constant; otherwise returns false.
+
+    A property is constant if the \c{Q_PROPERTY()}'s \c CONSTANT attribute
+    is set.
+*/
+bool QMetaProperty::isConstant() const
+{
+    if (!mobj)
+        return false;
+    int flags = mobj->d.data[handle + 2];
+    return flags & Constant;
+}
+
+/*!
     \obsolete
 
     Returns true if the property is editable for the given \a object;
diff --git a/src/corelib/kernel/qmetaobject.h b/src/corelib/kernel/qmetaobject.h
index 000ba6e..73b52a9 100644
--- a/src/corelib/kernel/qmetaobject.h
+++ b/src/corelib/kernel/qmetaobject.h
@@ -187,6 +187,8 @@ public:
     bool isStored(const QObject *obj = 0) const;
     bool isEditable(const QObject *obj = 0) const;
     bool isUser(const QObject *obj = 0) const;
+    bool isDynamic() const;
+    bool isConstant() const;
 
     bool isFlagType() const;
     bool isEnumType() const;