From e253dbb57e2775b326256e6e23c62866baffefc9 Mon Sep 17 00:00:00 2001
From: "dmose%netscape.com"
 <dmose%netscape.com@18797224-902f-48f8-a5cc-f745e15eee43>
Date: Fri, 13 Apr 2001 22:13:04 +0000
Subject: [PATCH] helper function to make code that gets nsISupports proxies
 more readable: NS_GetProxyForObject (bug 74792).  r=brendan@mozilla.org,
 sr=waterson@netscape.com

git-svn-id: svn://10.0.0.236/trunk@92235 18797224-902f-48f8-a5cc-f745e15eee43
---
 .../proxy/public/nsIProxyObjectManager.idl    | 16 ++++++-
 .../xpcom/proxy/src/nsProxyObjectManager.cpp  | 42 ++++++++++++++++++-
 2 files changed, 55 insertions(+), 3 deletions(-)

diff --git a/mozilla/xpcom/proxy/public/nsIProxyObjectManager.idl b/mozilla/xpcom/proxy/public/nsIProxyObjectManager.idl
index e7bf27f510d..3f1eee9dc8b 100644
--- a/mozilla/xpcom/proxy/public/nsIProxyObjectManager.idl
+++ b/mozilla/xpcom/proxy/public/nsIProxyObjectManager.idl
@@ -17,7 +17,8 @@
  * Copyright (C) 1998 Netscape Communications Corporation. All
  * Rights Reserved.
  *
- * Contributor(s): 
+ * Contributor(s): Doug Turner <dougt@netscape.com> (Original Author)
+ *                 Dan Mosedale <dmose@netscape.com>
  */
 #include "nsISupports.idl"
 interface nsIEventQueue;
@@ -54,4 +55,17 @@ interface nsIProxyObjectManager : nsISupports
  {0x91, 0x5e, 0xc1, 0x2b, 0x69, 0x6c, 0x93, 0x33}\
 } 
 
+/**
+ * Helper function for code that already has a link-time dependency on
+ * libxpcom and needs to get proxies in a bunch of different places.
+ * This way, the caller isn't forced to get the proxy object manager
+ * themselves every single time, thus making the calling code more
+ * readable.
+ */
+extern NS_COM nsresult
+NS_GetProxyForObject(nsIEventQueue *destQueue, 
+                     REFNSIID aIID, 
+                     nsISupports* aObj, 
+                     PRInt32 proxyType, 
+                     void** aProxyObject);
 %}
diff --git a/mozilla/xpcom/proxy/src/nsProxyObjectManager.cpp b/mozilla/xpcom/proxy/src/nsProxyObjectManager.cpp
index 3151518d2b9..184a61f0dfe 100644
--- a/mozilla/xpcom/proxy/src/nsProxyObjectManager.cpp
+++ b/mozilla/xpcom/proxy/src/nsProxyObjectManager.cpp
@@ -17,8 +17,17 @@
  * Copyright (C) 1998 Netscape Communications Corporation. All
  * Rights Reserved.
  *
- * Contributor(s): 
- *   Pierre Phaneuf <pp@ludusdesign.com>
+ * Contributor(s): Doug Turner <dougt@netscape.com> (Original Author)
+ *                 Judson Valeski <valeski@netscape.com>
+ *                 Dan Matejka <danm@netscape.com>
+ *                 Scott Collins <scc@netscape.com>
+ *                 Heikki Toivonen <heiki@citec.fi>
+ *                 Patrick Beard <beard@netscape.com>
+ *                 Pierre Phaneuf <pp@ludusdesign.com>
+ *                 Warren Harris <warren@netscape.com>
+ *                 Chris Seawood <cls@seawood.org>
+ *                 Chris Waterson <waterson@netscape.com>
+ *                 Dan Mosedale <dmose@netscape.com>
  */
 
 
@@ -265,5 +274,34 @@ nsProxyObjectManager::GetProxy(  nsIEventQueue *destQueue,
     return rv;   
 }
 
+/**
+ * Helper function for code that already has a link-time dependency on
+ * libxpcom and needs to get proxies in a bunch of different places.
+ * This way, the caller isn't forced to get the proxy object manager
+ * themselves every single time, thus making the calling code more
+ * readable.
+ */
+NS_COM nsresult
+NS_GetProxyForObject(nsIEventQueue *destQueue, 
+                     REFNSIID aIID, 
+                     nsISupports* aObj, 
+                     PRInt32 proxyType, 
+                     void** aProxyObject) 
+{
+    static NS_DEFINE_CID(proxyObjMgrCID, NS_PROXYEVENT_MANAGER_CID);
 
+    nsresult rv;    // temp for return value
 
+    // get the proxy object manager
+    //
+    nsCOMPtr<nsIProxyObjectManager> proxyObjMgr = 
+        do_GetService(proxyObjMgrCID, &rv);
+
+    if (NS_FAILED(rv))
+        return NS_ERROR_FAILURE;
+    
+    // and try to get the proxy object
+    //
+    return proxyObjMgr->GetProxyForObject(destQueue, aIID, aObj,
+                                          proxyType, aProxyObject);
+}