1 files changed, 169 insertions, 0 deletions
diff --git a/src/libs/xpcom18a4/xpcom/glue/nsWeakReference.cpp b/src/libs/xpcom18a4/xpcom/glue/nsWeakReference.cpp
new file mode 100644
index 00000000..76d9f593
--- /dev/null
+++ b/src/libs/xpcom18a4/xpcom/glue/nsWeakReference.cpp
@@ -0,0 +1,169 @@
+/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*-
+ *
+ * ***** BEGIN LICENSE BLOCK *****
+ * Version: MPL 1.1/GPL 2.0/LGPL 2.1
+ *
+ * The contents of this file are subject to the Mozilla Public License Version
+ * 1.1 (the "License"); you may not use this file except in compliance with
+ * the License. You may obtain a copy of the License at
+ * http://www.mozilla.org/MPL/
+ *
+ * Software distributed under the License is distributed on an "AS IS" basis,
+ * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
+ * for the specific language governing rights and limitations under the
+ * License.
+ *
+ * The Original Code is the Mozilla browser.
+ *
+ * The Initial Developer of the Original Code is
+ * Netscape Communications, Inc.
+ * Portions created by the Initial Developer are Copyright (C) 1999
+ * the Initial Developer. All Rights Reserved.
+ *
+ * Contributor(s):
+ *   Scott Collins <scc@netscape.com>
+ *   Pierre Phaneuf <pp@ludusdesign.com>
+ *
+ * Alternatively, the contents of this file may be used under the terms of
+ * either of the GNU General Public License Version 2 or later (the "GPL"),
+ * or the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
+ * in which case the provisions of the GPL or the LGPL are applicable instead
+ * of those above. If you wish to allow use of your version of this file only
+ * under the terms of either the GPL or the LGPL, and not to allow others to
+ * use your version of this file under the terms of the MPL, indicate your
+ * decision by deleting the provisions above and replace them with the notice
+ * and other provisions required by the GPL or the LGPL. If you do not delete
+ * the provisions above, a recipient may use your version of this file under
+ * the terms of any one of the MPL, the GPL or the LGPL.
+ *
+ * ***** END LICENSE BLOCK ***** */
+
+// nsWeakReference.cpp
+
+#include "nsWeakReference.h"
+#include "nsCOMPtr.h"
+
+nsresult
+nsQueryReferent::operator()( const nsIID& aIID, void** answer ) const
+  {
+    nsresult status;
+    if ( mWeakPtr )
+      {
+        if ( NS_FAILED(status = mWeakPtr->QueryReferent(aIID, answer)) )
+          *answer = 0;
+      }
+    else
+      status = NS_ERROR_NULL_POINTER;
+
+    if ( mErrorPtr )
+      *mErrorPtr = status;
+    return status;
+  }
+
+nsresult
+nsGetWeakReference::operator()( const nsIID&, void** aResult ) const
+  {
+    nsresult status;
+    // nsIWeakReference** result = &NS_STATIC_CAST(nsIWeakReference*, *aResult);
+    *aResult = 0;
+
+    if ( mRawPtr )
+      {
+        nsCOMPtr<nsISupportsWeakReference> factoryPtr = do_QueryInterface(mRawPtr, &status);
+        NS_ASSERTION(factoryPtr, "Oops!  You're asking for a weak reference to an object that doesn't support that.");
+        if ( factoryPtr )
+          {
+            nsIWeakReference* temp;
+            status = factoryPtr->GetWeakReference(&temp);
+            *aResult = temp;
+          }
+        // else, |status| has already been set by |do_QueryInterface|
+      }
+    else
+      status = NS_ERROR_NULL_POINTER;
+
+    if ( mErrorPtr )
+      *mErrorPtr = status;
+    return status;
+  }
+
+
+NS_COM nsIWeakReference*  // or else |already_AddRefed<nsIWeakReference>|
+NS_GetWeakReference( nsISupports* aInstancePtr, nsresult* aErrorPtr )
+  {
+    void* result = 0;
+    nsGetWeakReference(aInstancePtr, aErrorPtr)(NS_GET_IID(nsIWeakReference), &result);
+    return NS_STATIC_CAST(nsIWeakReference*, result);
+  }
+
+NS_COM nsresult
+nsSupportsWeakReference::GetWeakReference( nsIWeakReference** aInstancePtr )
+  {
+    if ( !aInstancePtr )
+      return NS_ERROR_NULL_POINTER;
+
+    if ( !mProxy )
+      mProxy = new nsWeakReference(this);
+    *aInstancePtr = mProxy;
+
+    nsresult status;
+    if ( !*aInstancePtr )
+      status = NS_ERROR_OUT_OF_MEMORY;
+    else
+      {
+        NS_ADDREF(*aInstancePtr);
+        status = NS_OK;
+      }
+
+    return status;
+  }
+
+NS_IMETHODIMP_(nsrefcnt)
+nsWeakReference::AddRef()
+  {
+    return ++mRefCount;
+  }
+
+NS_IMETHODIMP_(nsrefcnt)
+nsWeakReference::Release()
+  {
+    nsrefcnt temp = --mRefCount;
+    if ( !mRefCount )
+      delete this;
+    return temp;
+  }
+
+NS_IMETHODIMP
+nsWeakReference::QueryInterface( const nsIID& aIID, void** aInstancePtr )
+  {
+    NS_ASSERTION(aInstancePtr, "QueryInterface requires a non-NULL destination!");
+
+    if ( !aInstancePtr )
+      return NS_ERROR_NULL_POINTER;
+
+    nsISupports* foundInterface;
+    if ( aIID.Equals(NS_GET_IID(nsIWeakReference)) )
+      foundInterface = NS_STATIC_CAST(nsIWeakReference*, this);
+    else if ( aIID.Equals(NS_GET_IID(nsISupports)) )
+      foundInterface = NS_STATIC_CAST(nsISupports*, this);
+    else
+      foundInterface = 0;
+
+    nsresult status;
+    if ( !foundInterface )
+      status = NS_NOINTERFACE;
+    else
+      {
+        NS_ADDREF(foundInterface);
+        status = NS_OK;
+      }
+
+    *aInstancePtr = foundInterface;
+    return status;
+  }
+
+NS_IMETHODIMP
+nsWeakReference::QueryReferent( const nsIID& aIID, void** aInstancePtr )
+  {
+    return mReferent ? mReferent->QueryInterface(aIID, aInstancePtr) : NS_ERROR_NULL_POINTER;
+  }