1 files changed, 89 insertions, 0 deletions
diff --git a/src/native/windows/msofficecomm/WeakReferenceSource.h b/src/native/windows/msofficecomm/WeakReferenceSource.h
new file mode 100644
index 0000000..8be3da2
--- /dev/null
+++ b/src/native/windows/msofficecomm/WeakReferenceSource.h
@@ -0,0 +1,89 @@
+/*
+ * Jitsi, the OpenSource Java VoIP and Instant Messaging client.
+ *
+ * Distributable under LGPL license.
+ * See terms of license at gnu.org.
+ */
+#ifndef _JMSOFFICECOMM_WEAKREFERENCESOURCE_H_
+#define _JMSOFFICECOMM_WEAKREFERENCESOURCE_H_
+
+#include "IWeakReferenceSource.h"
+
+class WeakReference;
+
+class WeakReferenceSource
+    : public IWeakReferenceSource
+{
+public:
+    WeakReferenceSource(LPUNKNOWN iUnknown)
+        : _iUnknown(iUnknown), _weakReference(NULL) {}
+    virtual ~WeakReferenceSource();
+
+    // IUnknown
+    STDMETHODIMP QueryInterface(REFIID iid, PVOID *obj)
+        { return _iUnknown->QueryInterface(iid, obj); }
+    STDMETHODIMP_(ULONG) AddRef()
+        { return _iUnknown->AddRef(); }
+    STDMETHODIMP_(ULONG) Release()
+        { return _iUnknown->Release(); }
+
+    // IWeakReferenceSource
+    STDMETHODIMP GetWeakReference(IWeakReference **weakReference);
+
+private:
+    const LPUNKNOWN _iUnknown;
+    WeakReference *_weakReference;
+};
+
+#define STDMETHODIMP_RESOLVE_WEAKREFERENCE_OR_NEW(out,weakReference,clazz,...) \
+    { \
+        HRESULT hr; \
+\
+        if (out) \
+        { \
+            hr = E_FAIL; \
+            if (weakReference) \
+            { \
+                hr = weakReference->Resolve(IID_IDispatch, (PVOID *) out); \
+                if (FAILED(hr) && (E_NOINTERFACE != hr)) \
+                { \
+                    weakReference->Release(); \
+                    weakReference = NULL; \
+                } \
+            } \
+            if (FAILED(hr) && (E_NOINTERFACE != hr)) \
+            { \
+                clazz *obj = new clazz(__VA_ARGS__); \
+                IWeakReferenceSource *weakReferenceSource; \
+\
+                hr \
+                    = obj->QueryInterface( \
+                            IID_IWeakReferenceSource, \
+                            (PVOID *) &weakReferenceSource); \
+                obj->Release(); \
+                if (SUCCEEDED(hr)) \
+                { \
+                    hr \
+                        = weakReferenceSource->GetWeakReference( \
+                                &weakReference); \
+                    if (SUCCEEDED(hr)) \
+                    { \
+                        hr \
+                            = weakReference->Resolve( \
+                                    IID_IDispatch, \
+                                    (PVOID *) out); \
+                    } \
+                    else \
+                        *out = NULL; \
+                    weakReferenceSource->Release(); \
+                } \
+                else \
+                    *out = NULL; \
+            } \
+        } \
+        else \
+            hr = RPC_X_NULL_REF_POINTER; \
+        return hr; \
+    }
+
+#endif /* #ifndef _JMSOFFICECOMM_WEAKREFERENCESOURCE_H_ */