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// 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 "ui/views/corewm/input_method_event_filter.h"
#include "ui/aura/client/aura_constants.h"
#include "ui/aura/root_window.h"
#include "ui/base/events/event.h"
#include "ui/base/ime/input_method.h"
#include "ui/base/ime/input_method_factory.h"
namespace views {
namespace corewm {
////////////////////////////////////////////////////////////////////////////////
// InputMethodEventFilter, public:
InputMethodEventFilter::InputMethodEventFilter(gfx::AcceleratedWidget widget)
: input_method_(ui::CreateInputMethod(this, widget)),
target_root_window_(NULL) {
// TODO(yusukes): Check if the root window is currently focused and pass the
// result to Init().
input_method_->Init(true);
}
InputMethodEventFilter::~InputMethodEventFilter() {
}
void InputMethodEventFilter::SetInputMethodPropertyInRootWindow(
aura::RootWindow* root_window) {
root_window->SetProperty(aura::client::kRootWindowInputMethodKey,
input_method_.get());
}
////////////////////////////////////////////////////////////////////////////////
// InputMethodEventFilter, EventFilter implementation:
void InputMethodEventFilter::OnKeyEvent(ui::KeyEvent* event) {
const ui::EventType type = event->type();
if (type == ui::ET_TRANSLATED_KEY_PRESS ||
type == ui::ET_TRANSLATED_KEY_RELEASE) {
// The |event| is already handled by this object, change the type of the
// event to ui::ET_KEY_* and pass it to the next filter.
static_cast<ui::TranslatedKeyEvent*>(event)->ConvertToKeyEvent();
} else {
// If the focused window is changed, all requests to IME will be
// discarded so it's safe to update the target_root_window_ here.
aura::Window* target = static_cast<aura::Window*>(event->target());
target_root_window_ = target->GetRootWindow();
DCHECK(target_root_window_);
bool handled = false;
if (event->HasNativeEvent())
handled = input_method_->DispatchKeyEvent(event->native_event());
else
handled = input_method_->DispatchFabricatedKeyEvent(*event);
if (handled)
event->StopPropagation();
}
}
////////////////////////////////////////////////////////////////////////////////
// InputMethodEventFilter, ui::InputMethodDelegate implementation:
bool InputMethodEventFilter::DispatchKeyEventPostIME(
const base::NativeEvent& event) {
#if defined(OS_WIN)
DCHECK(event.message != WM_CHAR);
#endif
ui::TranslatedKeyEvent aura_event(event, false /* is_char */);
return target_root_window_->AsRootWindowHostDelegate()->OnHostKeyEvent(
&aura_event);
}
bool InputMethodEventFilter::DispatchFabricatedKeyEventPostIME(
ui::EventType type,
ui::KeyboardCode key_code,
int flags) {
ui::TranslatedKeyEvent aura_event(type == ui::ET_KEY_PRESSED, key_code,
flags);
return target_root_window_->AsRootWindowHostDelegate()->OnHostKeyEvent(
&aura_event);
}
} // namespace corewm
} // namespace views
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