OLD | NEW |
| (Empty) |
1 // Copyright (c) 2012 The Chromium Authors. All rights reserved. | |
2 // Use of this source code is governed by a BSD-style license that can be | |
3 // found in the LICENSE file. | |
4 | |
5 #include "base/win/text_services_message_filter.h" | |
6 | |
7 namespace base { | |
8 namespace win { | |
9 | |
10 TextServicesMessageFilter::TextServicesMessageFilter() | |
11 : client_id_(TF_CLIENTID_NULL), | |
12 is_initialized_(false) { | |
13 } | |
14 | |
15 TextServicesMessageFilter::~TextServicesMessageFilter() { | |
16 if (is_initialized_) | |
17 thread_mgr_->Deactivate(); | |
18 } | |
19 | |
20 bool TextServicesMessageFilter::Init() { | |
21 if (FAILED(thread_mgr_.CreateInstance(CLSID_TF_ThreadMgr))) | |
22 return false; | |
23 | |
24 if (FAILED(message_pump_.QueryFrom(thread_mgr_))) | |
25 return false; | |
26 | |
27 if (FAILED(keystroke_mgr_.QueryFrom(thread_mgr_))) | |
28 return false; | |
29 | |
30 if (FAILED(thread_mgr_->Activate(&client_id_))) | |
31 return false; | |
32 | |
33 is_initialized_ = true; | |
34 return is_initialized_; | |
35 } | |
36 | |
37 // Wraps for ITfMessagePump::PeekMessage with win32 PeekMessage signature. | |
38 // Obtains messages from application message queue. | |
39 BOOL TextServicesMessageFilter::DoPeekMessage(MSG* msg, | |
40 HWND window_handle, | |
41 UINT msg_filter_min, | |
42 UINT msg_filter_max, | |
43 UINT remove_msg) { | |
44 BOOL result = FALSE; | |
45 if (FAILED(message_pump_->PeekMessage(msg, window_handle, | |
46 msg_filter_min, msg_filter_max, | |
47 remove_msg, &result))) { | |
48 result = FALSE; | |
49 } | |
50 | |
51 return result; | |
52 } | |
53 | |
54 // Sends message to Text Service Manager. | |
55 // The message will be used to input composition text. | |
56 // Returns true if |message| was consumed by text service manager. | |
57 bool TextServicesMessageFilter::ProcessMessage(const MSG& msg) { | |
58 if (msg.message == WM_KEYDOWN) { | |
59 BOOL eaten = FALSE; | |
60 HRESULT hr = keystroke_mgr_->TestKeyDown(msg.wParam, msg.lParam, &eaten); | |
61 if (FAILED(hr) && !eaten) | |
62 return false; | |
63 eaten = FALSE; | |
64 hr = keystroke_mgr_->KeyDown(msg.wParam, msg.lParam, &eaten); | |
65 return (SUCCEEDED(hr) && !!eaten); | |
66 } | |
67 | |
68 if (msg.message == WM_KEYUP) { | |
69 BOOL eaten = FALSE; | |
70 HRESULT hr = keystroke_mgr_->TestKeyUp(msg.wParam, msg.lParam, &eaten); | |
71 if (FAILED(hr) && !eaten) | |
72 return false; | |
73 eaten = FALSE; | |
74 hr = keystroke_mgr_->KeyUp(msg.wParam, msg.lParam, &eaten); | |
75 return (SUCCEEDED(hr) && !!eaten); | |
76 } | |
77 | |
78 return false; | |
79 } | |
80 | |
81 } // namespace win | |
82 } // namespace base | |
OLD | NEW |