gecko-dev/dom/base/nsFocusController.cpp

233 lines
7.2 KiB
C++

/* -*- Mode: C++; tab-width: 3; 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):
* David W. Hyatt <hyatt@netscape.com> (Original Author)
* Dan Rosen <dr@netscape.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 ***** */
#include "nsIContent.h"
#include "nsIControllers.h"
#include "nsIDOMDocument.h"
#include "nsIDOMHTMLDocument.h"
#include "nsIDOMElement.h"
#include "nsIDOMNSHTMLInputElement.h"
#include "nsIDOMNSHTMLTextAreaElement.h"
#include "nsIDOMNSEvent.h"
#include "nsIDOMWindowInternal.h"
#include "nsIDocument.h"
#include "nsPIDOMWindow.h"
#include "nsFocusController.h"
#include "prlog.h"
#include "nsGlobalWindow.h"
#include "nsFocusManager.h"
#ifdef MOZ_XUL
#include "nsIDOMXULDocument.h"
#include "nsIDOMXULElement.h"
#endif
////////////////////////////////////////////////////////////////////////
NS_IMPL_CYCLE_COLLECTION_CLASS(nsFocusController)
NS_IMPL_CYCLE_COLLECTING_ADDREF_AMBIGUOUS(nsFocusController, nsIFocusController)
NS_IMPL_CYCLE_COLLECTING_RELEASE_AMBIGUOUS(nsFocusController,
nsIFocusController)
NS_INTERFACE_MAP_BEGIN_CYCLE_COLLECTION(nsFocusController)
NS_INTERFACE_MAP_ENTRY(nsIFocusController)
NS_INTERFACE_MAP_ENTRY(nsSupportsWeakReference)
NS_INTERFACE_MAP_ENTRY_AMBIGUOUS(nsISupports, nsIFocusController)
NS_INTERFACE_MAP_END
NS_IMPL_CYCLE_COLLECTION_UNLINK_0(nsFocusController)
NS_IMPL_CYCLE_COLLECTION_TRAVERSE_BEGIN(nsFocusController)
NS_IMPL_CYCLE_COLLECTION_TRAVERSE_NSCOMPTR(mPopupNode)
NS_IMPL_CYCLE_COLLECTION_TRAVERSE_END
NS_IMETHODIMP
nsFocusController::Create(nsIFocusController** aResult)
{
nsFocusController* controller = new nsFocusController();
if (!controller)
return NS_ERROR_OUT_OF_MEMORY;
*aResult = controller;
NS_ADDREF(*aResult);
return NS_OK;
}
NS_IMETHODIMP
nsFocusController::GetControllers(nsIControllers** aResult)
{
// XXX: we should fix this so there's a generic interface that
// describes controllers, so this code would have no special
// knowledge of what object might have controllers.
nsCOMPtr<nsIDOMElement> focusedElement;
nsIFocusManager* fm = nsFocusManager::GetFocusManager();
if (fm)
fm->GetFocusedElement(getter_AddRefs(focusedElement));
if (focusedElement) {
#ifdef MOZ_XUL
nsCOMPtr<nsIDOMXULElement> xulElement(do_QueryInterface(focusedElement));
if (xulElement)
return xulElement->GetControllers(aResult);
#endif
nsCOMPtr<nsIDOMNSHTMLTextAreaElement> htmlTextArea =
do_QueryInterface(focusedElement);
if (htmlTextArea)
return htmlTextArea->GetControllers(aResult);
nsCOMPtr<nsIDOMNSHTMLInputElement> htmlInputElement =
do_QueryInterface(focusedElement);
if (htmlInputElement)
return htmlInputElement->GetControllers(aResult);
nsCOMPtr<nsIContent> content = do_QueryInterface(focusedElement);
if (content && content->IsEditable()) {
// Move up to the window.
nsCOMPtr<nsIDOMDocument> domDoc;
focusedElement->GetOwnerDocument(getter_AddRefs(domDoc));
nsCOMPtr<nsIDOMWindowInternal> domWindow =
do_QueryInterface(GetWindowFromDocument(domDoc));
if (domWindow)
return domWindow->GetControllers(aResult);
}
}
else {
nsCOMPtr<nsIDOMWindow> focusedWindow;
fm->GetFocusedWindow(getter_AddRefs(focusedWindow));
nsCOMPtr<nsIDOMWindowInternal> domWindow = do_QueryInterface(focusedWindow);
if (domWindow)
return domWindow->GetControllers(aResult);
}
*aResult = nsnull;
return NS_OK;
}
nsPIDOMWindow *
nsFocusController::GetWindowFromDocument(nsIDOMDocument* aDocument)
{
nsCOMPtr<nsIDocument> doc = do_QueryInterface(aDocument);
if (!doc)
return nsnull;
return doc->GetWindow();
}
NS_IMETHODIMP
nsFocusController::GetControllerForCommand(const char * aCommand,
nsIController** _retval)
{
NS_ENSURE_ARG_POINTER(_retval);
*_retval = nsnull;
nsCOMPtr<nsIControllers> controllers;
nsCOMPtr<nsIController> controller;
GetControllers(getter_AddRefs(controllers));
if(controllers) {
controllers->GetControllerForCommand(aCommand, getter_AddRefs(controller));
if(controller) {
controller.swap(*_retval);
return NS_OK;
}
}
nsCOMPtr<nsIDOMElement> focusedElement;
nsCOMPtr<nsIDOMWindow> focusedWindow;
nsIFocusManager* fm = nsFocusManager::GetFocusManager();
if (fm) {
fm->GetFocusedElement(getter_AddRefs(focusedElement));
fm->GetFocusedWindow(getter_AddRefs(focusedWindow));
}
while (focusedWindow) {
nsCOMPtr<nsIDOMWindowInternal> domWindow(do_QueryInterface(focusedWindow));
nsCOMPtr<nsIControllers> controllers2;
domWindow->GetControllers(getter_AddRefs(controllers2));
if(controllers2) {
controllers2->GetControllerForCommand(aCommand,
getter_AddRefs(controller));
if(controller) {
controller.swap(*_retval);
return NS_OK;
}
}
// XXXndeakin P3 is this casting safe?
nsCOMPtr<nsPIDOMWindow> piWindow = do_QueryInterface(focusedWindow);
nsGlobalWindow *win =
static_cast<nsGlobalWindow *>
(static_cast<nsIDOMWindowInternal *>(piWindow));
focusedWindow = win->GetPrivateParent();
}
return NS_OK;
}
NS_IMETHODIMP
nsFocusController::GetPopupNode(nsIDOMNode** aNode)
{
#ifdef DEBUG_dr
printf("dr :: nsFocusController::GetPopupNode\n");
#endif
*aNode = mPopupNode;
NS_IF_ADDREF(*aNode);
return NS_OK;
}
NS_IMETHODIMP
nsFocusController::SetPopupNode(nsIDOMNode* aNode)
{
#ifdef DEBUG_dr
printf("dr :: nsFocusController::SetPopupNode\n");
#endif
if (aNode) {
nsCOMPtr<nsINode> node = do_QueryInterface(aNode);
NS_ENSURE_ARG(node);
}
mPopupNode = aNode;
return NS_OK;
}