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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/view.h"
#include "views/widget/widget.h"
#include "base/logging.h"
namespace views {
InputMethodBase::InputMethodBase()
: delegate_(NULL),
widget_(NULL),
focused_view_(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;
widget->GetFocusManager()->AddFocusChangeListener(this);
}
void InputMethodBase::OnFocus() {
widget_focused_ = true;
}
void InputMethodBase::OnBlur() {
widget_focused_ = false;
}
TextInputClient* InputMethodBase::GetTextInputClient() const {
return (widget_focused_ && focused_view_) ?
focused_view_->GetTextInputClient() : NULL;
}
ui::TextInputType InputMethodBase::GetTextInputType() const {
TextInputClient* client = GetTextInputClient();
return client ? client->GetTextInputType() : ui::TEXT_INPUT_TYPE_NONE;
}
void InputMethodBase::FocusWillChange(View* focused_before, View* focused) {
DCHECK_EQ(focused_view_, focused_before);
FocusedViewWillChange();
focused_view_ = focused;
FocusedViewDidChange();
}
bool InputMethodBase::IsViewFocused(View* view) const {
return widget_focused_ && view && focused_view_ == 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 = client->GetCaretBounds();
gfx::Point origin = rect->origin();
gfx::Point end = gfx::Point(rect->right(), rect->bottom());
View::ConvertPointToWidget(focused_view_, &origin);
View::ConvertPointToWidget(focused_view_, &end);
rect->SetRect(origin.x(), origin.y(),
end.x() - origin.x(), end.y() - origin.y());
// We need to do coordinate conversion if the focused view is inside a child
// Widget.
if (focused_view_->GetWidget() != widget_)
return Widget::ConvertRect(focused_view_->GetWidget(), widget_, rect);
return true;
}
void InputMethodBase::FocusedViewWillChange() {
}
void InputMethodBase::FocusedViewDidChange() {
}
} // namespace views
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