Merge from Chromium at DEPS revision r167172
This commit was generated by merge_to_master.py.
Change-Id: Ib8d56fd5ae39a2d7e8c91dcd76cc6d13f25f2aab
diff --git a/base/win/text_services_message_filter.cc b/base/win/text_services_message_filter.cc
new file mode 100644
index 0000000..7ce233d
--- /dev/null
+++ b/base/win/text_services_message_filter.cc
@@ -0,0 +1,82 @@
+// Copyright (c) 2012 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#include "base/win/text_services_message_filter.h"
+
+namespace base {
+namespace win {
+
+TextServicesMessageFilter::TextServicesMessageFilter()
+ : client_id_(TF_CLIENTID_NULL),
+ is_initialized_(false) {
+}
+
+TextServicesMessageFilter::~TextServicesMessageFilter() {
+ if (is_initialized_)
+ thread_mgr_->Deactivate();
+}
+
+bool TextServicesMessageFilter::Init() {
+ if (FAILED(thread_mgr_.CreateInstance(CLSID_TF_ThreadMgr)))
+ return false;
+
+ if (FAILED(message_pump_.QueryFrom(thread_mgr_)))
+ return false;
+
+ if (FAILED(keystroke_mgr_.QueryFrom(thread_mgr_)))
+ return false;
+
+ if (FAILED(thread_mgr_->Activate(&client_id_)))
+ return false;
+
+ is_initialized_ = true;
+ return is_initialized_;
+}
+
+// Wraps for ITfMessagePump::PeekMessage with win32 PeekMessage signature.
+// Obtains messages from application message queue.
+BOOL TextServicesMessageFilter::DoPeekMessage(MSG* msg,
+ HWND window_handle,
+ UINT msg_filter_min,
+ UINT msg_filter_max,
+ UINT remove_msg) {
+ BOOL result = FALSE;
+ if (FAILED(message_pump_->PeekMessage(msg, window_handle,
+ msg_filter_min, msg_filter_max,
+ remove_msg, &result))) {
+ result = FALSE;
+ }
+
+ return result;
+}
+
+// Sends message to Text Service Manager.
+// The message will be used to input composition text.
+// Returns true if |message| was consumed by text service manager.
+bool TextServicesMessageFilter::ProcessMessage(const MSG& msg) {
+ if (msg.message == WM_KEYDOWN) {
+ BOOL eaten = FALSE;
+ HRESULT hr = keystroke_mgr_->TestKeyDown(msg.wParam, msg.lParam, &eaten);
+ if (FAILED(hr) && !eaten)
+ return false;
+ eaten = FALSE;
+ hr = keystroke_mgr_->KeyDown(msg.wParam, msg.lParam, &eaten);
+ return (SUCCEEDED(hr) && !!eaten);
+ }
+
+ if (msg.message == WM_KEYUP) {
+ BOOL eaten = FALSE;
+ HRESULT hr = keystroke_mgr_->TestKeyUp(msg.wParam, msg.lParam, &eaten);
+ if (FAILED(hr) && !eaten)
+ return false;
+ eaten = FALSE;
+ hr = keystroke_mgr_->KeyUp(msg.wParam, msg.lParam, &eaten);
+ return (SUCCEEDED(hr) && !!eaten);
+ }
+
+ return false;
+}
+
+} // namespace win
+} // namespace base