зеркало из https://github.com/mozilla/gecko-dev.git
68 строки
2.4 KiB
C++
68 строки
2.4 KiB
C++
/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*-
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*
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* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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#ifndef __mozilla_widget_WidgetUtils_h__
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#define __mozilla_widget_WidgetUtils_h__
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#include "nsCOMPtr.h"
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#include "nsIWidget.h"
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#include "nsEvent.h"
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#include "nsPIDOMWindow.h"
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#include "nsIDOMWindow.h"
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namespace mozilla {
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namespace widget {
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class WidgetUtils
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{
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public:
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/**
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* Starting at the docshell item for the passed in DOM window this looks up
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* the docshell tree until it finds a docshell item that has a widget.
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*/
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static already_AddRefed<nsIWidget> DOMWindowToWidget(nsIDOMWindow *aDOMWindow);
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/**
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* Compute our keyCode value (NS_VK_*) from an ASCII character.
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*/
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static uint32_t ComputeKeyCodeFromChar(uint32_t aCharCode);
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/**
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* Get unshifted charCode and shifted charCode for aKeyCode if the keyboad
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* layout is a Latin keyboard layout.
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*
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* @param aKeyCode Our keyCode (NS_VK_*).
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* @param aIsCapsLock TRUE if CapsLock is Locked. Otherwise, FALSE.
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* This is used only when aKeyCode is NS_VK_[0-9].
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* @param aUnshiftedCharCode CharCode for aKeyCode without Shift key.
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* This may be zero if aKeyCode key doesn't input
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* a Latin character.
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* Note that must not be NULL.
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* @param aShiftedCharCode CharCode for aKeyCOde with Shift key.
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* This is always 0 when aKeyCode isn't
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* NS_VK_[A-Z].
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* Note that must not be NULL.
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*/
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static void GetLatinCharCodeForKeyCode(uint32_t aKeyCode,
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bool aIsCapsLock,
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uint32_t* aUnshiftedCharCode,
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uint32_t* aShiftedCharCode);
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/**
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* GetDeadKeyNameIndex() returns a key name index for dead key or
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* "Unidentified". This method can return the index from non-combining
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* unicode character, e.g., '`' returns KEY_NAME_INDEX_DeadGrave.
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* So, you cannot use this method for checking if the char is a dead char.
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*/
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static KeyNameIndex GetDeadKeyNameIndex(PRUnichar aChar);
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};
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} // namespace widget
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} // namespace mozilla
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#endif
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