NOT PART OF BUILD.

New nsICommandHandler interface and C++ implementation for embedders who want their XUL to be able to call their webbrowser container with the minimum of effort.


git-svn-id: svn://10.0.0.236/trunk@75400 18797224-902f-48f8-a5cc-f745e15eee43

mozilla/embedding/browser/webBrowser/nsCommandHandler.cpp

@@ -0,0 +1,141 @@
+/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*-
+ *
+ * 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 Netscape are
+ * Copyright (C) 1999, Mozilla.  All Rights Reserved.
+ * 
+ * Contributor(s):
+ *   Adam Lock <adamlock@netscape.com>
+ */
+
+#include "nsCommandHandler.h"
+#include "nsWebBrowser.h"
+#include "nsDocShellTreeOwner.h"
+
+#include "nsIScriptGlobalObject.h"
+
+nsCommandHandler::nsCommandHandler() :
+    mWindow(nsnull)
+{
+    NS_INIT_REFCNT();
+}
+
+nsCommandHandler::~nsCommandHandler()
+{
+}
+
+nsresult nsCommandHandler::GetCommandHandler(nsICommandHandler **aCommandHandler)
+{
+    NS_ENSURE_ARG_POINTER(aCommandHandler);
+
+    *aCommandHandler = nsnull;
+    if (mWindow == nsnull)
+    {
+        return NS_ERROR_FAILURE;
+    }
+
+    nsCOMPtr<nsIScriptGlobalObject> globalObj( do_QueryInterface(mWindow) );
+    if (!globalObj)
+    {
+        return NS_ERROR_FAILURE;
+    }
+
+    nsCOMPtr<nsIDocShell> docShell;
+    globalObj->GetDocShell(getter_AddRefs(docShell));
+
+    // Find the treeowner
+    nsCOMPtr<nsIDocShellTreeItem> docShellAsTreeItem(do_QueryInterface(docShell));
+    nsIWebBrowser *webBrowser = nsnull;
+
+    nsIDocShellTreeOwner *treeOwner = nsnull;
+    docShellAsTreeItem->GetTreeOwner(&treeOwner);
+    
+    // See if the client on the tree owner implements nsICommandHandler
+    if (treeOwner)
+    {
+        nsDocShellTreeOwner *tree = NS_STATIC_CAST(nsDocShellTreeOwner *, treeOwner);
+        if (tree->mTreeOwner)
+        {
+            nsresult rv;
+            rv = tree->mTreeOwner->QueryInterface(NS_GET_IID(nsICommandHandler), (void **)aCommandHandler);
+            NS_RELEASE(treeOwner);
+            return rv;
+        }
+        NS_RELEASE(treeOwner);
+     }
+    *aCommandHandler = nsnull;
+
+    return NS_OK;
+}
+
+NS_IMPL_ADDREF(nsCommandHandler)
+NS_IMPL_RELEASE(nsCommandHandler)
+
+NS_INTERFACE_MAP_BEGIN(nsCommandHandler)
+    NS_INTERFACE_MAP_ENTRY_AMBIGUOUS(nsISupports, nsICommandHandler)
+    NS_INTERFACE_MAP_ENTRY(nsICommandHandlerInit)
+    NS_INTERFACE_MAP_ENTRY(nsICommandHandler)
+NS_INTERFACE_MAP_END
+
+///////////////////////////////////////////////////////////////////////////////
+// nsICommandHandlerInit implementation
+
+/* attribute nsIDocShell docShell; */
+NS_IMETHODIMP nsCommandHandler::GetWindow(nsIDOMWindow * *aWindow)
+{
+    *aWindow = nsnull;
+    return NS_OK;
+}
+
+NS_IMETHODIMP nsCommandHandler::SetWindow(nsIDOMWindow * aWindow)
+{
+    if (aWindow == nsnull)
+    {
+       return NS_ERROR_FAILURE;
+    }
+    mWindow = aWindow;
+    return NS_OK;
+}
+
+///////////////////////////////////////////////////////////////////////////////
+// nsICommandHandler implementation
+
+/* void do (in string aCommand, in string aStatus); */
+NS_IMETHODIMP nsCommandHandler::Exec(const char *aCommand, const char *aStatus)
+{
+    nsCOMPtr<nsICommandHandler> commandHandler;
+    GetCommandHandler(getter_AddRefs(commandHandler));
+
+    if (commandHandler)
+    {
+        return commandHandler->Exec(aCommand, aStatus);
+    }
+
+    return NS_OK;
+}
+
+/* void query (in string aCommand, in string aStatus); */
+NS_IMETHODIMP nsCommandHandler::Query(const char *aCommand, const char *aStatus)
+{
+    nsCOMPtr<nsICommandHandler> commandHandler;
+    GetCommandHandler(getter_AddRefs(commandHandler));
+
+    if (commandHandler)
+    {
+        return commandHandler->Query(aCommand, aStatus);
+    }
+
+    return NS_OK;
+}