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| 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 | |
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