gecko/widget/shared/WidgetUtils.h
2012-05-21 12:12:37 +01:00

59 lines
2.0 KiB
C++

/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*-
*
* 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/. */
#ifndef __mozilla_widget_WidgetUtils_h__
#define __mozilla_widget_WidgetUtils_h__
#include "nsCOMPtr.h"
#include "nsIWidget.h"
#include "nsPIDOMWindow.h"
#include "nsIDOMWindow.h"
namespace mozilla {
namespace widget {
class WidgetUtils
{
public:
/**
* Starting at the docshell item for the passed in DOM window this looks up
* the docshell tree until it finds a docshell item that has a widget.
*/
static already_AddRefed<nsIWidget> DOMWindowToWidget(nsIDOMWindow *aDOMWindow);
/**
* Compute our keyCode value (NS_VK_*) from an ASCII character.
*/
static PRUint32 ComputeKeyCodeFromChar(PRUint32 aCharCode);
/**
* Get unshifted charCode and shifted charCode for aKeyCode if the keyboad
* layout is a Latin keyboard layout.
*
* @param aKeyCode Our keyCode (NS_VK_*).
* @param aIsCapsLock TRUE if CapsLock is Locked. Otherwise, FALSE.
* This is used only when aKeyCode is NS_VK_[0-9].
* @param aUnshiftedCharCode CharCode for aKeyCode without Shift key.
* This may be zero if aKeyCode key doesn't input
* a Latin character.
* Note that must not be NULL.
* @param aShiftedCharCode CharCode for aKeyCOde with Shift key.
* This is always 0 when aKeyCode isn't
* NS_VK_[A-Z].
* Note that must not be NULL.
*/
static void GetLatinCharCodeForKeyCode(PRUint32 aKeyCode,
bool aIsCapsLock,
PRUint32* aUnshiftedCharCode,
PRUint32* aShiftedCharCode);
};
} // namespace widget
} // namespace mozilla
#endif