gecko/layout/xul/base/src/nsMenuBoxObject.cpp

173 lines
5.2 KiB
C++

/* -*- Mode: C++; tab-width: 2; 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 Mozilla Communicator client code.
*
* The Initial Developer of the Original Code is
* Netscape Communications Corporation.
* Portions created by the Initial Developer are Copyright (C) 1998
* the Initial Developer. All Rights Reserved.
*
* Contributor(s):
* Original Author: David W. Hyatt (hyatt@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 "nsISupportsUtils.h"
#include "nsIMenuBoxObject.h"
#include "nsBoxObject.h"
#include "nsIPresShell.h"
#include "nsIFrame.h"
#include "nsGUIEvent.h"
#include "nsIDOMNSUIEvent.h"
#include "nsMenuBarListener.h"
#include "nsMenuFrame.h"
#include "nsMenuPopupFrame.h"
class nsMenuBoxObject : public nsIMenuBoxObject, public nsBoxObject
{
public:
NS_DECL_ISUPPORTS_INHERITED
NS_DECL_NSIMENUBOXOBJECT
nsMenuBoxObject();
virtual ~nsMenuBoxObject();
};
nsMenuBoxObject::nsMenuBoxObject()
{
}
nsMenuBoxObject::~nsMenuBoxObject()
{
}
NS_IMPL_ISUPPORTS_INHERITED1(nsMenuBoxObject, nsBoxObject, nsIMenuBoxObject)
/* void openMenu (in boolean openFlag); */
NS_IMETHODIMP nsMenuBoxObject::OpenMenu(PRBool aOpenFlag)
{
nsXULPopupManager* pm = nsXULPopupManager::GetInstance();
if (pm) {
nsIFrame* frame = GetFrame(PR_FALSE);
if (frame) {
if (aOpenFlag) {
nsCOMPtr<nsIContent> content = mContent;
pm->ShowMenu(content, PR_FALSE, PR_FALSE);
}
else {
if (frame->GetType() == nsGkAtoms::menuFrame) {
nsMenuPopupFrame* popupFrame = (static_cast<nsMenuFrame *>(frame))->GetPopup();
if (popupFrame)
pm->HidePopup(popupFrame->GetContent(), PR_FALSE, PR_TRUE, PR_FALSE);
}
}
}
}
return NS_OK;
}
NS_IMETHODIMP nsMenuBoxObject::GetActiveChild(nsIDOMElement** aResult)
{
*aResult = nsnull;
nsIFrame* frame = GetFrame(PR_FALSE);
if (frame && frame->GetType() == nsGkAtoms::menuFrame)
return static_cast<nsMenuFrame *>(frame)->GetActiveChild(aResult);
return NS_OK;
}
NS_IMETHODIMP nsMenuBoxObject::SetActiveChild(nsIDOMElement* aResult)
{
nsIFrame* frame = GetFrame(PR_FALSE);
if (frame && frame->GetType() == nsGkAtoms::menuFrame)
return static_cast<nsMenuFrame *>(frame)->SetActiveChild(aResult);
return NS_OK;
}
/* boolean handleKeyPress (in nsIDOMKeyEvent keyEvent); */
NS_IMETHODIMP nsMenuBoxObject::HandleKeyPress(nsIDOMKeyEvent* aKeyEvent, PRBool* aHandledFlag)
{
*aHandledFlag = PR_FALSE;
NS_ENSURE_ARG(aKeyEvent);
nsXULPopupManager* pm = nsXULPopupManager::GetInstance();
if (!pm)
return NS_OK;
// if event has already been handled, bail
nsCOMPtr<nsIDOMNSUIEvent> uiEvent(do_QueryInterface(aKeyEvent));
if (!uiEvent)
return NS_OK;
PRBool eventHandled = PR_FALSE;
uiEvent->GetPreventDefault(&eventHandled);
if (eventHandled)
return NS_OK;
if (nsMenuBarListener::IsAccessKeyPressed(aKeyEvent))
return NS_OK;
nsIFrame* frame = GetFrame(PR_FALSE);
if (!frame || frame->GetType() != nsGkAtoms::menuFrame)
return NS_OK;
nsMenuPopupFrame* popupFrame = static_cast<nsMenuFrame *>(frame)->GetPopup();
if (!popupFrame)
return NS_OK;
PRUint32 keyCode;
aKeyEvent->GetKeyCode(&keyCode);
switch (keyCode) {
case NS_VK_UP:
case NS_VK_DOWN:
case NS_VK_HOME:
case NS_VK_END:
{
nsNavigationDirection theDirection;
NS_DIRECTION_FROM_KEY_CODE(popupFrame, theDirection, keyCode);
*aHandledFlag =
pm->HandleKeyboardNavigationInPopup(popupFrame, theDirection);
return NS_OK;
}
default:
*aHandledFlag = pm->HandleShortcutNavigation(aKeyEvent, popupFrame);
return NS_OK;
}
}
// Creation Routine ///////////////////////////////////////////////////////////////////////
nsresult
NS_NewMenuBoxObject(nsIBoxObject** aResult)
{
*aResult = new nsMenuBoxObject;
if (!*aResult)
return NS_ERROR_OUT_OF_MEMORY;
NS_ADDREF(*aResult);
return NS_OK;
}