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// Copyright (c) 2011 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 "views/ime/input_method_base.h"
#include "views/ime/text_input_type_tracker.h"
#include "views/view.h"
#include "views/widget/widget.h"
#include "base/logging.h"
namespace views {
InputMethodBase::InputMethodBase()
: delegate_(NULL),
widget_(NULL),
widget_focused_(false) {
}
InputMethodBase::~InputMethodBase() {
if (widget_) {
widget_->GetFocusManager()->RemoveFocusChangeListener(this);
widget_ = NULL;
}
}
void InputMethodBase::set_delegate(internal::InputMethodDelegate* delegate) {
DCHECK(delegate);
delegate_ = delegate;
}
void InputMethodBase::Init(Widget* widget) {
DCHECK(widget);
DCHECK(widget->GetFocusManager());
if (widget_) {
NOTREACHED() << "The input method is already initialized.";
return;
}
widget_ = widget;
// The InputMethod is lazily created, so we need to tell it the currently
// focused view.
View* focused = widget->GetFocusManager()->GetFocusedView();
if (focused)
OnWillChangeFocus(NULL, focused);
widget->GetFocusManager()->AddFocusChangeListener(this);
}
void InputMethodBase::OnFocus() {
widget_focused_ = true;
TextInputTypeTracker::GetInstance()->OnTextInputTypeChanged(
GetTextInputType(), widget_);
}
void InputMethodBase::OnBlur() {
widget_focused_ = false;
TextInputTypeTracker::GetInstance()->OnTextInputTypeChanged(
GetTextInputType(), widget_);
}
views::View* InputMethodBase::GetFocusedView() const {
return widget_->GetFocusManager()->GetFocusedView();
}
void InputMethodBase::OnTextInputTypeChanged(View* view) {
if (IsViewFocused(view)) {
TextInputTypeTracker::GetInstance()->OnTextInputTypeChanged(
GetTextInputType(), widget_);
}
}
TextInputClient* InputMethodBase::GetTextInputClient() const {
return (widget_focused_ && GetFocusedView()) ?
GetFocusedView()->GetTextInputClient() : NULL;
}
ui::TextInputType InputMethodBase::GetTextInputType() const {
TextInputClient* client = GetTextInputClient();
return client ? client->GetTextInputType() : ui::TEXT_INPUT_TYPE_NONE;
}
bool InputMethodBase::IsMock() const {
return false;
}
void InputMethodBase::OnWillChangeFocus(View* focused_before, View* focused) {
}
void InputMethodBase::OnDidChangeFocus(View* focused_before, View* focused) {
if (widget_focused_) {
TextInputTypeTracker::GetInstance()->OnTextInputTypeChanged(
GetTextInputType(), widget_);
}
}
bool InputMethodBase::IsViewFocused(View* view) const {
return widget_focused_ && view && GetFocusedView() == view;
}
bool InputMethodBase::IsTextInputTypeNone() const {
return GetTextInputType() == ui::TEXT_INPUT_TYPE_NONE;
}
void InputMethodBase::OnInputMethodChanged() const {
TextInputClient* client = GetTextInputClient();
if (client && client->GetTextInputType() != ui::TEXT_INPUT_TYPE_NONE)
client->OnInputMethodChanged();
}
void InputMethodBase::DispatchKeyEventPostIME(const KeyEvent& key) const {
if (delegate_)
delegate_->DispatchKeyEventPostIME(key);
}
bool InputMethodBase::GetCaretBoundsInWidget(gfx::Rect* rect) const {
DCHECK(rect);
TextInputClient* client = GetTextInputClient();
if (!client || client->GetTextInputType() == ui::TEXT_INPUT_TYPE_NONE)
return false;
*rect = GetFocusedView()->ConvertRectToWidget(client->GetCaretBounds());
// We need to do coordinate conversion if the focused view is inside a child
// Widget.
if (GetFocusedView()->GetWidget() != widget_)
return Widget::ConvertRect(GetFocusedView()->GetWidget(), widget_, rect);
return true;
}
} // namespace views
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