зеркало из https://github.com/mozilla/pjs.git
113 строки
3.6 KiB
C++
113 строки
3.6 KiB
C++
/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*-
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*
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* ***** BEGIN LICENSE BLOCK *****
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* Version: MPL 1.1/GPL 2.0/LGPL 2.1
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*
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* The contents of this file are subject to the Mozilla Public License Version
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* 1.1 (the "License"); you may not use this file except in compliance with
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* the License. You may obtain a copy of the License at
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* http://www.mozilla.org/MPL/
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*
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* Software distributed under the License is distributed on an "AS IS" basis,
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* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
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* for the specific language governing rights and limitations under the
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* License.
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*
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* The Original Code is mozilla.org code.
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*
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* The Initial Developer of the Original Code is
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* Mozilla Foundation
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* Portions created by the Initial Developer are Copyright (C) 2009
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* the Initial Developer. All Rights Reserved.
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*
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* Contributor(s):
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* Rob Arnold <tellrob@gmail.com>
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*
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* Alternatively, the contents of this file may be used under the terms of
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* either the GNU General Public License Version 2 or later (the "GPL"), or
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* the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
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* in which case the provisions of the GPL or the LGPL are applicable instead
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* of those above. If you wish to allow use of your version of this file only
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* under the terms of either the GPL or the LGPL, and not to allow others to
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* use your version of this file under the terms of the MPL, indicate your
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* decision by deleting the provisions above and replace them with the notice
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* and other provisions required by the GPL or the LGPL. If you do not delete
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* the provisions above, a recipient may use your version of this file under
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* the terms of any one of the MPL, the GPL or the LGPL.
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*
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* ***** END LICENSE BLOCK ***** */
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#ifndef __mozilla_WindowHook_h__
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#define __mozilla_WindowHook_h__
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#include <windows.h>
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#include <nsHashKeys.h>
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#include <nsClassHashtable.h>
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#include <nsTArray.h>
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#include "nsAppShell.h"
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class nsWindow;
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namespace mozilla {
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namespace widget {
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class WindowHook {
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public:
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// It is expected that most callbacks will return false
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typedef bool (*Callback)(void *aContext, HWND hWnd, UINT nMsg,
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WPARAM wParam, LPARAM lParam, LRESULT *aResult);
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nsresult AddHook(UINT nMsg, Callback callback, void *context);
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nsresult RemoveHook(UINT nMsg, Callback callback, void *context);
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nsresult AddMonitor(UINT nMsg, Callback callback, void *context);
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nsresult RemoveMonitor(UINT nMsg, Callback callback, void *context);
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private:
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struct CallbackData {
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Callback cb;
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void *context;
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CallbackData() : cb(nsnull), context(nsnull) {}
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CallbackData(Callback cb, void *ctx) : cb(cb), context(ctx) {}
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bool Invoke(HWND hWnd, UINT msg, WPARAM wParam, LPARAM lParam,
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LRESULT *aResult);
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bool operator== (const CallbackData &rhs) const {
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return cb == rhs.cb && context == rhs.context;
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}
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bool operator!= (const CallbackData &rhs) const {
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return !(*this == rhs);
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}
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operator bool () const {
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return !!cb;
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}
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};
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typedef nsTArray<CallbackData> CallbackDataArray;
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struct MessageData {
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UINT nMsg;
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CallbackData hook;
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CallbackDataArray monitors;
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};
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bool Notify(HWND hWnd, UINT nMsg, WPARAM wParam, LPARAM lParam,
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LRESULT *aResult);
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MessageData *Lookup(UINT nMsg);
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MessageData *LookupOrCreate(UINT nMsg);
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void DeleteIfEmpty(MessageData *data);
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typedef nsTArray<MessageData> MessageDataArray;
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MessageDataArray mMessageData;
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// For Notify
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friend class ::nsWindow;
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};
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}
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}
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#endif // __mozilla_WindowHook_h__
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