widget/windows/WindowHook.h@b8a032363ba2 (annotated)
widget/windows/WindowHook.h
Thu, 22 Jan 2015 13:21:57 +0100
- author
- Michael Schloh von Bennewitz <michael@schloh.com>
- date
- Thu, 22 Jan 2015 13:21:57 +0100
- branch
- TOR_BUG_9701
- changeset 15
- b8a032363ba2
- permissions
- -rw-r--r--
Incorporate requested changes from Mozilla in review:
https://bugzilla.mozilla.org/show_bug.cgi?id=1123480#c6
| michael@0 | 1 | /* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- |
| michael@0 | 2 | * |
| michael@0 | 3 | * This Source Code Form is subject to the terms of the Mozilla Public |
| michael@0 | 4 | * License, v. 2.0. If a copy of the MPL was not distributed with this |
| michael@0 | 5 | * file, You can obtain one at http://mozilla.org/MPL/2.0/. */ |
| michael@0 | 6 | |
| michael@0 | 7 | #ifndef __mozilla_WindowHook_h__ |
| michael@0 | 8 | #define __mozilla_WindowHook_h__ |
| michael@0 | 9 | |
| michael@0 | 10 | #include <windows.h> |
| michael@0 | 11 | |
| michael@0 | 12 | #include <nsHashKeys.h> |
| michael@0 | 13 | #include <nsClassHashtable.h> |
| michael@0 | 14 | #include <nsTArray.h> |
| michael@0 | 15 | |
| michael@0 | 16 | #include "nsAppShell.h" |
| michael@0 | 17 | |
| michael@0 | 18 | class nsWindow; |
| michael@0 | 19 | |
| michael@0 | 20 | namespace mozilla { |
| michael@0 | 21 | namespace widget { |
| michael@0 | 22 | |
| michael@0 | 23 | struct MSGResult; |
| michael@0 | 24 | |
| michael@0 | 25 | class WindowHook { |
| michael@0 | 26 | public: |
| michael@0 | 27 | |
| michael@0 | 28 | // It is expected that most callbacks will return false |
| michael@0 | 29 | typedef bool (*Callback)(void *aContext, HWND hWnd, UINT nMsg, |
| michael@0 | 30 | WPARAM wParam, LPARAM lParam, LRESULT *aResult); |
| michael@0 | 31 | |
| michael@0 | 32 | nsresult AddHook(UINT nMsg, Callback callback, void *context); |
| michael@0 | 33 | nsresult RemoveHook(UINT nMsg, Callback callback, void *context); |
| michael@0 | 34 | nsresult AddMonitor(UINT nMsg, Callback callback, void *context); |
| michael@0 | 35 | nsresult RemoveMonitor(UINT nMsg, Callback callback, void *context); |
| michael@0 | 36 | |
| michael@0 | 37 | private: |
| michael@0 | 38 | struct CallbackData { |
| michael@0 | 39 | Callback cb; |
| michael@0 | 40 | void *context; |
| michael@0 | 41 | |
| michael@0 | 42 | CallbackData() : cb(nullptr), context(nullptr) {} |
| michael@0 | 43 | CallbackData(Callback cb, void *ctx) : cb(cb), context(ctx) {} |
| michael@0 | 44 | bool Invoke(HWND hWnd, UINT msg, WPARAM wParam, LPARAM lParam, |
| michael@0 | 45 | LRESULT *aResult); |
| michael@0 | 46 | bool operator== (const CallbackData &rhs) const { |
| michael@0 | 47 | return cb == rhs.cb && context == rhs.context; |
| michael@0 | 48 | } |
| michael@0 | 49 | bool operator!= (const CallbackData &rhs) const { |
| michael@0 | 50 | return !(*this == rhs); |
| michael@0 | 51 | } |
| michael@0 | 52 | operator bool () const { |
| michael@0 | 53 | return !!cb; |
| michael@0 | 54 | } |
| michael@0 | 55 | }; |
| michael@0 | 56 | |
| michael@0 | 57 | typedef nsTArray<CallbackData> CallbackDataArray; |
| michael@0 | 58 | struct MessageData { |
| michael@0 | 59 | UINT nMsg; |
| michael@0 | 60 | CallbackData hook; |
| michael@0 | 61 | CallbackDataArray monitors; |
| michael@0 | 62 | }; |
| michael@0 | 63 | |
| michael@0 | 64 | bool Notify(HWND hWnd, UINT nMsg, WPARAM wParam, LPARAM lParam, |
| michael@0 | 65 | MSGResult& aResult); |
| michael@0 | 66 | |
| michael@0 | 67 | MessageData *Lookup(UINT nMsg); |
| michael@0 | 68 | MessageData *LookupOrCreate(UINT nMsg); |
| michael@0 | 69 | void DeleteIfEmpty(MessageData *data); |
| michael@0 | 70 | |
| michael@0 | 71 | typedef nsTArray<MessageData> MessageDataArray; |
| michael@0 | 72 | MessageDataArray mMessageData; |
| michael@0 | 73 | |
| michael@0 | 74 | // For Notify |
| michael@0 | 75 | friend class ::nsWindow; |
| michael@0 | 76 | }; |
| michael@0 | 77 | |
| michael@0 | 78 | } |
| michael@0 | 79 | } |
| michael@0 | 80 | |
| michael@0 | 81 | #endif // __mozilla_WindowHook_h__ |
