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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/ime/input_method_bridge.h"
#include "ui/base/events/event.h"
#include "ui/base/ime/input_method.h"
#include "ui/gfx/rect.h"
#include "ui/views/view.h"
#include "ui/views/widget/widget.h"
namespace views {
InputMethodBridge::InputMethodBridge(internal::InputMethodDelegate* delegate,
ui::InputMethod* host)
: host_(host),
context_focused_(false) {
DCHECK(host_);
set_delegate(delegate);
}
InputMethodBridge::~InputMethodBridge() {
if (host_->GetTextInputClient() == this)
host_->SetFocusedTextInputClient(NULL);
}
void InputMethodBridge::Init(Widget* widget) {
InputMethodBase::Init(widget);
}
void InputMethodBridge::OnFocus() {
InputMethodBase::OnFocus();
// Ask the system-wide IME to send all TextInputClient messages to |this|
// object.
host_->SetFocusedTextInputClient(this);
// TODO(yusukes): We don't need to call OnTextInputTypeChanged() once we move
// text input type tracker code to ui::InputMethodBase.
if (GetFocusedView())
OnTextInputTypeChanged(GetFocusedView());
}
void InputMethodBridge::OnBlur() {
// win32 sends multiple focus lost events, ignore all but the first.
if (widget_focused())
return;
ConfirmCompositionText();
InputMethodBase::OnBlur();
if (host_->GetTextInputClient() == this)
host_->SetFocusedTextInputClient(NULL);
}
void InputMethodBridge::DispatchKeyEvent(const ui::KeyEvent& key) {
DCHECK(key.type() == ui::ET_KEY_PRESSED || key.type() == ui::ET_KEY_RELEASED);
// We can just dispatch the event here since the |key| is already processed by
// the system-wide IME.
DispatchKeyEventPostIME(key);
}
void InputMethodBridge::OnTextInputTypeChanged(View* view) {
if (IsViewFocused(view))
host_->OnTextInputTypeChanged(this);
InputMethodBase::OnTextInputTypeChanged(view);
}
void InputMethodBridge::OnCaretBoundsChanged(View* view) {
if (IsViewFocused(view) && !IsTextInputTypeNone())
host_->OnCaretBoundsChanged(this);
}
void InputMethodBridge::CancelComposition(View* view) {
if (IsViewFocused(view))
host_->CancelComposition(this);
}
std::string InputMethodBridge::GetInputLocale() {
return host_->GetInputLocale();
}
base::i18n::TextDirection InputMethodBridge::GetInputTextDirection() {
return host_->GetInputTextDirection();
}
bool InputMethodBridge::IsActive() {
return host_->IsActive();
}
// Overridden from TextInputClient. Forward an event from the system-wide IME
// to the text input |client|, which is e.g. views::NativeTextfieldViews.
void InputMethodBridge::SetCompositionText(
const ui::CompositionText& composition) {
TextInputClient* client = GetTextInputClient();
if (client)
client->SetCompositionText(composition);
}
void InputMethodBridge::ConfirmCompositionText() {
TextInputClient* client = GetTextInputClient();
if (client)
client->ConfirmCompositionText();
}
void InputMethodBridge::ClearCompositionText() {
TextInputClient* client = GetTextInputClient();
if (client)
client->ClearCompositionText();
}
void InputMethodBridge::InsertText(const string16& text) {
TextInputClient* client = GetTextInputClient();
if (client)
client->InsertText(text);
}
void InputMethodBridge::InsertChar(char16 ch, int flags) {
TextInputClient* client = GetTextInputClient();
if (client)
client->InsertChar(ch, flags);
}
ui::TextInputType InputMethodBridge::GetTextInputType() const {
TextInputClient* client = GetTextInputClient();
return client ? client->GetTextInputType() : ui::TEXT_INPUT_TYPE_NONE;
}
bool InputMethodBridge::CanComposeInline() const {
TextInputClient* client = GetTextInputClient();
return client ? client->CanComposeInline() : true;
}
gfx::Rect InputMethodBridge::ConvertRectToFocusedView(const gfx::Rect& rect) {
gfx::Point origin = rect.origin();
gfx::Point end = gfx::Point(rect.right(), rect.bottom());
View::ConvertPointToScreen(GetFocusedView(), &origin);
View::ConvertPointToScreen(GetFocusedView(), &end);
return gfx::Rect(origin.x(),
origin.y(),
end.x() - origin.x(),
end.y() - origin.y());
}
gfx::Rect InputMethodBridge::GetCaretBounds() {
TextInputClient* client = GetTextInputClient();
if (!client || !GetFocusedView())
return gfx::Rect();
const gfx::Rect rect = client->GetCaretBounds();
return ConvertRectToFocusedView(rect);
}
bool InputMethodBridge::GetCompositionCharacterBounds(uint32 index,
gfx::Rect* rect) {
DCHECK(rect);
TextInputClient* client = GetTextInputClient();
if (!client || !GetFocusedView())
return false;
gfx::Rect relative_rect;
if (!client->GetCompositionCharacterBounds(index, &relative_rect))
return false;
*rect = ConvertRectToFocusedView(relative_rect);
return true;
}
bool InputMethodBridge::HasCompositionText() {
TextInputClient* client = GetTextInputClient();
return client ? client->HasCompositionText() : false;
}
bool InputMethodBridge::GetTextRange(ui::Range* range) {
TextInputClient* client = GetTextInputClient();
return client ? client->GetTextRange(range) : false;
}
bool InputMethodBridge::GetCompositionTextRange(ui::Range* range) {
TextInputClient* client = GetTextInputClient();
return client ? client->GetCompositionTextRange(range) : false;
}
bool InputMethodBridge::GetSelectionRange(ui::Range* range) {
TextInputClient* client = GetTextInputClient();
return client ? client->GetSelectionRange(range) : false;
}
bool InputMethodBridge::SetSelectionRange(const ui::Range& range) {
TextInputClient* client = GetTextInputClient();
return client ? client->SetSelectionRange(range) : false;
}
bool InputMethodBridge::DeleteRange(const ui::Range& range) {
TextInputClient* client = GetTextInputClient();
return client ? client->DeleteRange(range) : false;
}
bool InputMethodBridge::GetTextFromRange(
const ui::Range& range, string16* text) {
TextInputClient* client = GetTextInputClient();
return client ? client->GetTextFromRange(range, text) : false;
}
void InputMethodBridge::OnInputMethodChanged() {
TextInputClient* client = GetTextInputClient();
if (client)
client->OnInputMethodChanged();
}
bool InputMethodBridge::ChangeTextDirectionAndLayoutAlignment(
base::i18n::TextDirection direction) {
TextInputClient* client = GetTextInputClient();
return client ?
client->ChangeTextDirectionAndLayoutAlignment(direction) : false;
}
void InputMethodBridge::ExtendSelectionAndDelete(size_t before, size_t after) {
TextInputClient* client = GetTextInputClient();
if (client)
client->ExtendSelectionAndDelete(before, after);
}
// Overridden from FocusChangeListener.
void InputMethodBridge::OnWillChangeFocus(View* focused_before, View* focused) {
ConfirmCompositionText();
}
void InputMethodBridge::OnDidChangeFocus(View* focused_before, View* focused) {
OnTextInputTypeChanged(GetFocusedView());
OnCaretBoundsChanged(GetFocusedView());
}
} // namespace views
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