Imported from /home/lorry/working-area/delta_VirtualBox/VirtualBox-4.2.4.tar.bz2.VirtualBox-4.2.4

1 files changed, 171 insertions, 0 deletions

diff --git a/include/VBox/com/listeners.h b/include/VBox/com/listeners.h
new file mode 100644
index 00000000..419b18fa
--- /dev/null
+++ b/include/VBox/com/listeners.h
@@ -0,0 +1,171 @@
+/* $Id: listeners.h $ */
+/** @file
+ * Listeners helpers.
+ */
+
+/*
+ * Copyright (C) 2010-2011 Oracle Corporation
+ *
+ * This file is part of VirtualBox Open Source Edition (OSE), as
+ * available from http://www.virtualbox.org. This file is free software;
+ * you can redistribute it and/or modify it under the terms of the GNU
+ * General Public License (GPL) as published by the Free Software
+ * Foundation, in version 2 as it comes in the "COPYING" file of the
+ * VirtualBox OSE distribution. VirtualBox OSE is distributed in the
+ * hope that it will be useful, but WITHOUT ANY WARRANTY of any kind.
+ *
+ * The contents of this file may alternatively be used under the terms
+ * of the Common Development and Distribution License Version 1.0
+ * (CDDL) only, as it comes in the "COPYING.CDDL" file of the
+ * VirtualBox OSE distribution, in which case the provisions of the
+ * CDDL are applicable instead of those of the GPL.
+ *
+ * You may elect to license modified versions of this file under the
+ * terms and conditions of either the GPL or the CDDL or both.
+ */
+
+#ifndef ___VBox_com_listeners_h
+#define ___VBox_com_listeners_h
+
+#include <VBox/com/com.h>
+#include <VBox/com/VirtualBox.h>
+
+#ifdef VBOX_WITH_XPCOM
+# define NS_IMPL_QUERY_HEAD_INLINE() \
+NS_IMETHODIMP QueryInterface(REFNSIID aIID, void **aInstancePtr) \
+{ \
+    NS_ASSERTION(aInstancePtr, "QueryInterface requires a non-NULL destination!"); \
+    nsISupports *foundInterface;
+
+# define NS_INTERFACE_MAP_BEGIN_INLINE()      NS_IMPL_QUERY_HEAD_INLINE()
+
+# define NS_IMPL_QUERY_INTERFACE1_INLINE(a_i1) \
+    NS_INTERFACE_MAP_BEGIN_INLINE() \
+        NS_INTERFACE_MAP_ENTRY(a_i1) \
+        NS_INTERFACE_MAP_ENTRY_AMBIGUOUS(nsISupports, a_i1) \
+    NS_INTERFACE_MAP_END
+#endif
+
+template <class T, class TParam = void *>
+class ListenerImpl :
+     public CComObjectRootEx<CComMultiThreadModel>,
+     VBOX_SCRIPTABLE_IMPL(IEventListener)
+{
+    T*                mListener;
+
+#ifdef RT_OS_WINDOWS
+    /* FTM stuff */
+    CComPtr <IUnknown>   m_pUnkMarshaler;
+#else
+    nsAutoRefCnt mRefCnt;
+    NS_DECL_OWNINGTHREAD
+#endif
+
+public:
+    ListenerImpl()
+    {
+    }
+
+    virtual ~ListenerImpl()
+    {
+    }
+
+    HRESULT init(T* aListener, TParam param)
+    {
+       mListener = aListener;
+       return mListener->init(param);
+    }
+
+    HRESULT init(T* aListener)
+    {
+       mListener = aListener;
+       return mListener->init();
+    }
+
+    void uninit()
+    {
+       if (mListener)
+       {
+          mListener->uninit();
+          delete mListener;
+          mListener = 0;
+       }
+    }
+
+    HRESULT   FinalConstruct()
+    {
+#ifdef RT_OS_WINDOWS
+       return CoCreateFreeThreadedMarshaler(this, &m_pUnkMarshaler.p);
+#else
+       return S_OK;
+#endif
+    }
+
+    void   FinalRelease()
+    {
+      uninit();
+#ifdef RT_OS_WINDOWS
+      m_pUnkMarshaler.Release();
+#endif
+    }
+
+    T* getWrapped()
+    {
+        return mListener;
+    }
+
+    DECLARE_NOT_AGGREGATABLE(ListenerImpl)
+
+    DECLARE_PROTECT_FINAL_CONSTRUCT()
+
+#ifdef RT_OS_WINDOWS
+    BEGIN_COM_MAP(ListenerImpl)
+        COM_INTERFACE_ENTRY(IEventListener)
+        COM_INTERFACE_ENTRY2(IDispatch, IEventListener)
+        COM_INTERFACE_ENTRY_AGGREGATE(IID_IMarshal, m_pUnkMarshaler.p)
+    END_COM_MAP()
+#else
+    NS_IMETHOD_(nsrefcnt) AddRef(void)
+    {
+        NS_PRECONDITION(PRInt32(mRefCnt) >= 0, "illegal refcnt");
+        nsrefcnt count;
+        count = PR_AtomicIncrement((PRInt32*)&mRefCnt);
+        NS_LOG_ADDREF(this, count, "ListenerImpl", sizeof(*this));
+        return count;
+    }
+
+    NS_IMETHOD_(nsrefcnt) Release(void)
+    {
+        nsrefcnt count;
+        NS_PRECONDITION(0 != mRefCnt, "dup release");
+        count = PR_AtomicDecrement((PRInt32 *)&mRefCnt);
+        NS_LOG_RELEASE(this, count, "ListenerImpl");
+        if (0 == count) {
+            mRefCnt = 1; /* stabilize */
+            /* enable this to find non-threadsafe destructors: */
+            /* NS_ASSERT_OWNINGTHREAD(_class); */
+            NS_DELETEXPCOM(this);
+            return 0;
+        }
+        return count;
+    }
+
+    NS_IMPL_QUERY_INTERFACE1_INLINE(IEventListener)
+#endif
+
+
+    STDMETHOD(HandleEvent)(IEvent * aEvent)
+    {
+        VBoxEventType_T aType = VBoxEventType_Invalid;
+        aEvent->COMGETTER(Type)(&aType);
+        return mListener->HandleEvent(aType, aEvent);
+    }
+};
+
+#ifdef VBOX_WITH_XPCOM
+# define VBOX_LISTENER_DECLARE(klazz) NS_DECL_CLASSINFO(klazz)
+#else
+# define VBOX_LISTENER_DECLARE(klazz)
+#endif
+
+#endif