Implement input.ime.sendKeyEvents API.

chrome/browser/ui/input_method/input_method_engine.cc

 // Copyright 2016 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 "chrome/browser/ui/input_method/input_method_engine.h"
 
+#include "chrome/browser/ui/browser.h"
+#include "chrome/browser/ui/browser_finder.h"
+#include "chrome/browser/ui/browser_window.h"
 #include "content/public/browser/render_frame_host.h"
+#include "ui/aura/window.h"
+#include "ui/aura/window_tree_host.h"
 #include "ui/base/ime/composition_text.h"
 #include "ui/base/ime/ime_bridge.h"
 #include "ui/base/ime/ime_input_context_handler_interface.h"
+#include "ui/base/ime/input_method.h"
+#include "ui/events/keycodes/keyboard_code_conversion.h"
 
 namespace {
 
 const char kErrorFollowCursorWindowExists[] =
     "A follow cursor IME window exists.";
 const char kErrorNoInputFocus[] =
     "The follow cursor IME window cannot be created without an input focus.";
 const char kErrorReachMaxWindowCount[] =
     "Cannot create more than 5 normal IME windows.";
 
 const int kMaxNormalWindowCount = 5;
 
 }  // namespace
 
 namespace input_method {
 
 InputMethodEngine::InputMethodEngine() : follow_cursor_window_(nullptr) {}
 
 InputMethodEngine::~InputMethodEngine() {
   CloseImeWindows();
 }
 
-bool InputMethodEngine::SendKeyEvents(
-    int context_id,
-    const std::vector<KeyboardEvent>& events) {
-  // TODO(azurewei) Implement SendKeyEvents funciton
-  return false;
-}
-
 bool InputMethodEngine::IsActive() const {
   return true;
 }
 
 std::string InputMethodEngine::GetExtensionId() const {
   return extension_id_;
 }
 
 int InputMethodEngine::CreateImeWindow(
     const extensions::Extension* extension,
@@ skipping 109 matching lines @@
   if (ime_window == follow_cursor_window_) {
     follow_cursor_window_ = nullptr;
   } else {
     auto it = std::find(
         normal_windows_.begin(), normal_windows_.end(), ime_window);
     if (it != normal_windows_.end())
       normal_windows_.erase(it);
   }
 }
 
+bool InputMethodEngine::SendKeyEvent(ui::KeyEvent* event) {
+  Browser* browser = chrome::FindLastActiveWithProfile(profile_);
+  if (!browser)
+    return false;
+
+  if (event->key_code() == ui::VKEY_UNKNOWN)
+    event->set_key_code(ui::DomCodeToUsLayoutKeyboardCode(event->code()));
+
+  ui::InputMethod* input_method =
+      browser->window()->GetNativeWindow()->GetHost()->GetInputMethod();
+
+#if defined(OS_WIN)

[Shu Chen, 2016/03/08 14:38:03]

I think we should NOT hack for OS_WIN here.
Instead, we should fix InputMethodWin::DispatchFabricatedKeyEvent() method.
We can discuss offline about it.

[Shu Chen, 2016/03/09 04:00:24]

Per offline discussion, please add SendKeyEvents() method in
IMEInputContextHandlerInterface.
Therefore, there is no need to get the input method here.

[Azure Wei, 2016/03/09 05:01:57]

Done. Please review the latest patch set.

+  const uint16_t kNativeCode =
+      ui::KeycodeConverter::DomCodeToNativeKeycode(event->code());
+  const LPARAM lParam = ui::GetLParamFromScanCode(kNativeCode);
+
+  MSG native_event;
+  if (event->type() == ui::ET_KEY_PRESSED)
+    native_event = {NULL, WM_KEYDOWN, event->key_code(), lParam};
+  else
+    native_event = {NULL, WM_KEYUP, event->key_code(), lParam};
+  ui::KeyEvent key_event(native_event);
+  input_method->DispatchKeyEvent(&key_event);
+
+  if (event->type() == ui::ET_KEY_PRESSED && event->GetDomKey().IsCharacter()) {
+    MSG native_event_char = {NULL, WM_CHAR, event->GetCharacter(), lParam};
+    ui::KeyEvent key_event_char(native_event_char);
+    input_method->DispatchKeyEvent(&key_event_char);
+  }
+#else
+  input_method->DispatchKeyEvent(event);
+#endif
+
+  return true;
+}
+
 }  // namespace input_method