1 files changed, 114 insertions, 0 deletions
diff --git a/cppuhelper/inc/cppuhelper/weakagg.hxx b/cppuhelper/inc/cppuhelper/weakagg.hxx
new file mode 100644
index 000000000000..5add4f5d3bd9
--- /dev/null
+++ b/cppuhelper/inc/cppuhelper/weakagg.hxx
@@ -0,0 +1,114 @@
+/*************************************************************************
+ *
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * Copyright 2008 by Sun Microsystems, Inc.
+ *
+ * OpenOffice.org - a multi-platform office productivity suite
+ *
+ * $RCSfile: weakagg.hxx,v $
+ * $Revision: 1.8 $
+ *
+ * This file is part of OpenOffice.org.
+ *
+ * OpenOffice.org is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Lesser General Public License version 3
+ * only, as published by the Free Software Foundation.
+ *
+ * OpenOffice.org is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU Lesser General Public License version 3 for more details
+ * (a copy is included in the LICENSE file that accompanied this code).
+ *
+ * You should have received a copy of the GNU Lesser General Public License
+ * version 3 along with OpenOffice.org.  If not, see
+ * <http://www.openoffice.org/license.html>
+ * for a copy of the LGPLv3 License.
+ *
+ ************************************************************************/
+#ifndef _CPPUHELPER_WEAKAGG_HXX_
+#define _CPPUHELPER_WEAKAGG_HXX_
+
+#include <cppuhelper/weak.hxx>
+#include <com/sun/star/uno/XAggregation.hpp>
+
+
+namespace cppu
+{
+
+/** Base class to implement an UNO object supporting weak references, i.e. the object can be held
+    weakly (by a ::com::sun::star::uno::WeakReference) and aggregation, i.e. the object can be
+    aggregated by another (delegator).
+    This implementation copes with reference counting.  Upon last release(), the virtual dtor
+    is called.
+
+    @derive
+    Inherit from this class and delegate acquire()/ release() calls.  Re-implement
+    XAggregation::queryInterface().
+*/
+class OWeakAggObject
+    : public ::cppu::OWeakObject
+    , public ::com::sun::star::uno::XAggregation
+{
+public:
+    /** Constructor.  No delegator set.
+    */
+    inline OWeakAggObject() SAL_THROW( () )
+        {}
+
+    /** If a delegator is set, then the delegators gets acquired.  Otherwise call is delegated to
+        base class ::cppu::OWeakObject.
+    */
+    virtual void SAL_CALL acquire() throw();
+    /** If a delegator is set, then the delegators gets released.  Otherwise call is delegated to
+        base class ::cppu::OWeakObject.
+    */
+    virtual void SAL_CALL release() throw();
+    /** If a delegator is set, then the delegator is queried for the demanded interface.  If the
+        delegator cannot provide the demanded interface, it calls queryAggregation() on its
+        aggregated objects.
+
+        @param rType demanded interface type
+        @return demanded type or empty any
+        @see queryAggregation.
+    */
+    virtual ::com::sun::star::uno::Any SAL_CALL queryInterface( const ::com::sun::star::uno::Type & rType )
+        throw(::com::sun::star::uno::RuntimeException);
+
+    /** Set the delegator.  The delegator member reference is a weak reference.
+
+        @param Delegator the object that delegate its queryInterface to this aggregate.
+    */
+    virtual void SAL_CALL setDelegator( const ::com::sun::star::uno::Reference< ::com::sun::star::uno::XInterface > & Delegator )
+        throw(::com::sun::star::uno::RuntimeException);
+    /** Called by the delegator or queryInterface. Re-implement this method instead of
+        queryInterface.
+
+        @see queryInterface
+    */
+    virtual ::com::sun::star::uno::Any SAL_CALL queryAggregation( const ::com::sun::star::uno::Type & rType )
+        throw(::com::sun::star::uno::RuntimeException);
+
+protected:
+    /** Virtual dtor. Called when reference count is 0.
+
+        @attention
+        Despite the fact that a RuntimeException is allowed to be thrown, you must not throw any
+        exception upon destruction!
+    */
+    virtual ~OWeakAggObject() SAL_THROW( (::com::sun::star::uno::RuntimeException) );
+
+    /** weak reference to delegator.
+    */
+    ::com::sun::star::uno::WeakReferenceHelper xDelegator;
+private:
+    /** @internal */
+    OWeakAggObject( const OWeakAggObject & rObj ) SAL_THROW( () );
+    /** @internal */
+    OWeakAggObject & operator = ( const OWeakAggObject & rObj ) SAL_THROW( () );
+};
+
+}
+
+#endif