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// Copyright (c) 2010 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/chromeos/status/input_method_menu_button.h"
#include <string>
#include "app/resource_bundle.h"
#include "chrome/browser/chromeos/cros/cros_library.h"
#include "chrome/browser/chromeos/cros/keyboard_library.h"
#include "chrome/browser/chromeos/input_method/input_method_util.h"
#include "chrome/browser/chromeos/status/status_area_host.h"
#include "chrome/browser/prefs/pref_service.h"
#include "chrome/browser/profile.h"
namespace {
// Returns PrefService object associated with |host|. Returns NULL if we are NOT
// within a browser.
PrefService* GetPrefService(chromeos::StatusAreaHost* host) {
if (host->GetProfile()) {
return host->GetProfile()->GetPrefs();
}
return NULL;
}
} // namespace
namespace chromeos {
////////////////////////////////////////////////////////////////////////////////
// InputMethodMenuButton
InputMethodMenuButton::InputMethodMenuButton(StatusAreaHost* host)
: StatusAreaButton(this),
InputMethodMenu(GetPrefService(host),
host->IsBrowserMode(),
host->IsScreenLockerMode(),
false /* is_out_of_box_experience_mode */),
host_(host) {
set_border(NULL);
set_use_menu_button_paint(true);
SetFont(ResourceBundle::GetSharedInstance().GetFont(
ResourceBundle::BaseFont).DeriveFont(1));
SetEnabledColor(0xB3FFFFFF); // White with 70% Alpha
SetDisabledColor(0x00FFFFFF); // White with 00% Alpha (invisible)
SetShowMultipleIconStates(false);
set_alignment(TextButton::ALIGN_CENTER);
// Draw the default indicator "US". The default indicator "US" is used when
// |pref_service| is not available (for example, unit tests) or |pref_service|
// is available, but Chrome preferences are not available (for example,
// initial OS boot).
InputMethodMenuButton::UpdateUI(L"US", L"");
}
////////////////////////////////////////////////////////////////////////////////
// views::View implementation:
gfx::Size InputMethodMenuButton::GetPreferredSize() {
// If not enabled, then hide this button.
if (!IsEnabled()) {
return gfx::Size(0, 0);
}
return StatusAreaButton::GetPreferredSize();
}
void InputMethodMenuButton::OnLocaleChanged() {
input_method::OnLocaleChanged();
const InputMethodDescriptor& input_method =
CrosLibrary::Get()->GetInputMethodLibrary()->current_input_method();
UpdateUIFromInputMethod(input_method);
Layout();
SchedulePaint();
}
////////////////////////////////////////////////////////////////////////////////
// InputMethodMenu::InputMethodMenuHost implementation:
void InputMethodMenuButton::UpdateUI(
const std::wstring& name, const std::wstring& tooltip) {
// Hide the button only if there is only one input method, and the input
// method is a XKB keyboard layout. We don't hide the button for other
// types of input methods as these might have intra input method modes,
// like Hiragana and Katakana modes in Japanese input methods.
scoped_ptr<InputMethodDescriptors> active_input_methods(
CrosLibrary::Get()->GetInputMethodLibrary()->GetActiveInputMethods());
if (active_input_methods->size() == 1 &&
input_method::IsKeyboardLayout(active_input_methods->at(0).id) &&
host_->IsBrowserMode()) {
// As the disabled color is set to invisible, disabling makes the
// button disappear.
SetEnabled(false);
SetTooltipText(L""); // remove tooltip
} else {
SetEnabled(true);
SetTooltipText(tooltip);
}
SetText(name);
SchedulePaint();
}
void InputMethodMenuButton::OpenConfigUI() {
host_->OpenButtonOptions(this); // ask browser to open the DOMUI page.
}
bool InputMethodMenuButton::ShouldSupportConfigUI() {
return host_->ShouldOpenButtonOptions(this);
}
} // namespace chromeos
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