mirror of
https://github.com/classilla/tenfourfox.git
synced 2024-12-25 06:29:21 +00:00
145 lines
3.7 KiB
C++
145 lines
3.7 KiB
C++
/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
|
|
/* vim: set ts=8 sts=2 et sw=2 tw=80: */
|
|
/* This Source Code Form is subject to the terms of the Mozilla Public
|
|
* License, v. 2.0. If a copy of the MPL was not distributed with this
|
|
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
|
|
|
|
#include "nsCommandHandler.h"
|
|
#include "nsWebBrowser.h"
|
|
#include "nsDocShellTreeOwner.h"
|
|
|
|
#include "nsMemory.h"
|
|
#include "nsPIDOMWindow.h"
|
|
|
|
nsCommandHandler::nsCommandHandler()
|
|
: mWindow(nullptr)
|
|
{
|
|
}
|
|
|
|
nsCommandHandler::~nsCommandHandler()
|
|
{
|
|
}
|
|
|
|
nsresult
|
|
nsCommandHandler::GetCommandHandler(nsICommandHandler** aCommandHandler)
|
|
{
|
|
NS_ENSURE_ARG_POINTER(aCommandHandler);
|
|
|
|
*aCommandHandler = nullptr;
|
|
if (!mWindow) {
|
|
return NS_ERROR_FAILURE;
|
|
}
|
|
|
|
nsCOMPtr<nsPIDOMWindow> window(do_QueryInterface(mWindow));
|
|
if (!window) {
|
|
return NS_ERROR_FAILURE;
|
|
}
|
|
|
|
// Get the document tree owner
|
|
|
|
nsCOMPtr<nsIDocShellTreeItem> docShellAsTreeItem =
|
|
do_QueryInterface(window->GetDocShell());
|
|
nsIDocShellTreeOwner* treeOwner = nullptr;
|
|
docShellAsTreeItem->GetTreeOwner(&treeOwner);
|
|
|
|
// Make sure the tree owner is an an nsDocShellTreeOwner object
|
|
// by QI'ing for a hidden interface. If it doesn't have the interface
|
|
// then it's not safe to do the casting.
|
|
|
|
nsCOMPtr<nsICDocShellTreeOwner> realTreeOwner(do_QueryInterface(treeOwner));
|
|
if (realTreeOwner) {
|
|
nsDocShellTreeOwner* tree = 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 = nullptr;
|
|
|
|
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
|
|
|
|
NS_IMETHODIMP
|
|
nsCommandHandler::GetWindow(nsIDOMWindow** aWindow)
|
|
{
|
|
*aWindow = nullptr;
|
|
return NS_OK;
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
nsCommandHandler::SetWindow(nsIDOMWindow* aWindow)
|
|
{
|
|
if (!aWindow) {
|
|
return NS_ERROR_FAILURE;
|
|
}
|
|
mWindow = aWindow;
|
|
return NS_OK;
|
|
}
|
|
|
|
///////////////////////////////////////////////////////////////////////////////
|
|
// nsICommandHandler implementation
|
|
|
|
NS_IMETHODIMP
|
|
nsCommandHandler::Exec(const char* aCommand, const char* aStatus,
|
|
char** aResult)
|
|
{
|
|
NS_ENSURE_ARG_POINTER(aCommand);
|
|
NS_ENSURE_ARG_POINTER(aResult);
|
|
|
|
nsCOMPtr<nsICommandHandler> commandHandler;
|
|
GetCommandHandler(getter_AddRefs(commandHandler));
|
|
|
|
// Call the client's command handler to deal with this command
|
|
if (commandHandler) {
|
|
*aResult = nullptr;
|
|
return commandHandler->Exec(aCommand, aStatus, aResult);
|
|
}
|
|
|
|
// Return an empty string
|
|
const char szEmpty[] = "";
|
|
*aResult = (char*)nsMemory::Clone(szEmpty, sizeof(szEmpty));
|
|
|
|
return NS_OK;
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
nsCommandHandler::Query(const char* aCommand, const char* aStatus,
|
|
char** aResult)
|
|
{
|
|
NS_ENSURE_ARG_POINTER(aCommand);
|
|
NS_ENSURE_ARG_POINTER(aResult);
|
|
|
|
nsCOMPtr<nsICommandHandler> commandHandler;
|
|
GetCommandHandler(getter_AddRefs(commandHandler));
|
|
|
|
// Call the client's command handler to deal with this command
|
|
if (commandHandler) {
|
|
*aResult = nullptr;
|
|
return commandHandler->Query(aCommand, aStatus, aResult);
|
|
}
|
|
|
|
// Return an empty string
|
|
const char szEmpty[] = "";
|
|
*aResult = (char*)nsMemory::Clone(szEmpty, sizeof(szEmpty));
|
|
|
|
return NS_OK;
|
|
}
|