bug=41871

a=edburns
r=ashuk

This checkin makes it so CBrowserContainer is properly released.  The
problem was that the CBrowserContainer was still registered to the
docShell as a listener.  The solution was to call
wcIBrowserContianer::RemoveAllListeners() in the WebShellInitContext
deallocator.

java/webclient/src_moz/CBrowserContainer.cpp

@@ -103,12 +103,24 @@ CBrowserContainer::CBrowserContainer(nsIWebBrowser *pOwner, JNIEnv *env,
 	if (nsnull == gVm) { // declared in jni_util.h
         ::util_GetJavaVM(env, &gVm);  // save this vm reference away for the callback!
     }
-
 }
 
 
 CBrowserContainer::~CBrowserContainer()
 {
+    m_pOwner = nsnull;
+    mJNIEnv = nsnull;
+    mInitContext = nsnull;
+    mDocTarget = nsnull;
+    mMouseTarget = nsnull;
+    mDomEventTarget = nsnull;
+    inverseDepth = -1;
+    JNIEnv *env = (JNIEnv *) JNU_GetEnv(gVm, JNI_VERSION_1_2);
+    if (properties) {
+        ::util_DeleteGlobalRef(env, properties);
+    }
+    properties = nsnull;
+    currentDOMEvent = nsnull;
 }
 
 

java/webclient/src_moz/nsActions.cpp

@@ -35,6 +35,7 @@
 #include "nsIBaseWindow.h"
 #include "nsISHEntry.h"
 #include "nsIURI.h"
+#include "nsIDocShellTreeItem.h"
 
 #include "jni_util.h"
 
@@ -680,9 +681,29 @@ wsDeallocateInitContextEvent::handleEvent ()
     }
 
     mInitContext->parentHWnd = nsnull;
-    //    ((nsISupports *)mInitContext->docShell)->Release();
+
+    // make sure the webBrowser's contentListener doesn't have a ref to
+    // CBrowserContainer
+    mInitContext->webBrowser->SetParentURIContentListener(nsnull);
+    mInitContext->webBrowser = nsnull;
+
+    // make sure the webShell's container is set to null.
+    // get the webShell from the docShell
+    nsCOMPtr<nsIWebShell> webShell(do_QueryInterface(mInitContext->docShell));
+    if (webShell) {
+        webShell->SetContainer(nsnull);
+    }
+
+    // make sure the docShell's TreeOwner is set to null
+    // get the docShellTreeItem from the docShell
+    nsCOMPtr<nsIDocShellTreeItem> docShellAsItem(do_QueryInterface(mInitContext->docShell));
+    if (docShellAsItem) {
+        docShellAsItem->SetTreeOwner(nsnull);
+    }
+
+    mInitContext->docShell->SetDocLoaderObserver(nsnull);
+
     mInitContext->docShell = nsnull;
-    //    ((nsISupports *)mInitContext->webShell)->Release();
 
     // PENDING(edburns): this is a leak.  For some reason, webShell's
     // refcount is two.  I believe it should be one.
@@ -710,6 +731,11 @@ wsDeallocateInitContextEvent::handleEvent ()
     mInitContext->h = -1;    
     mInitContext->gtkWinPtr = nsnull;
     mInitContext->searchContext = nsnull;
+
+    // make sure we aren't listening anymore.  This needs to be done
+    // before currentDocument = nsnull
+    mInitContext->browserContainer->RemoveAllListeners();
+    
     mInitContext->currentDocument = nsnull;
     mInitContext->propertiesClass = nsnull;
     mInitContext->browserContainer = nsnull;