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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 "chrome/browser/chromeos/extensions/input_method_api.h"
#include "base/lazy_instance.h"
#include "base/values.h"
#include "chrome/browser/chromeos/extensions/input_method_event_router.h"
#include "chrome/browser/extensions/api/input_ime/input_ime_api.h"
#include "chrome/browser/extensions/event_names.h"
#include "chrome/browser/extensions/extension_function_registry.h"
#include "chromeos/ime/input_method_manager.h"
#include "extensions/browser/extension_system.h"
namespace {
// Prefix, which is used by XKB.
const char kXkbPrefix[] = "xkb:";
} // namespace
namespace extensions {
GetInputMethodFunction::GetInputMethodFunction() {
}
GetInputMethodFunction::~GetInputMethodFunction() {
}
bool GetInputMethodFunction::RunImpl() {
#if !defined(OS_CHROMEOS)
NOTREACHED();
return false;
#else
chromeos::input_method::InputMethodManager* manager =
chromeos::input_method::InputMethodManager::Get();
const std::string input_method = InputMethodAPI::GetInputMethodForXkb(
manager->GetCurrentInputMethod().id());
SetResult(base::Value::CreateStringValue(input_method));
return true;
#endif
}
StartImeFunction::StartImeFunction() {
}
StartImeFunction::~StartImeFunction() {
}
bool StartImeFunction::RunImpl() {
#if !defined(OS_CHROMEOS)
NOTREACHED();
return false;
#else
chromeos::InputMethodEngineInterface* engine =
InputImeEventRouter::GetInstance()->GetActiveEngine(extension_id());
if (engine)
engine->StartIme();
return true;
#endif
}
InputMethodAPI::InputMethodAPI(content::BrowserContext* context)
: context_(context) {
ExtensionSystem::Get(context_)->event_router()->
RegisterObserver(this, event_names::kOnInputMethodChanged);
ExtensionFunctionRegistry* registry =
ExtensionFunctionRegistry::GetInstance();
registry->RegisterFunction<GetInputMethodFunction>();
registry->RegisterFunction<StartImeFunction>();
}
InputMethodAPI::~InputMethodAPI() {
}
// static
std::string InputMethodAPI::GetInputMethodForXkb(const std::string& xkb_id) {
size_t prefix_length = std::string(kXkbPrefix).length();
DCHECK(xkb_id.substr(0, prefix_length) == kXkbPrefix);
return xkb_id.substr(prefix_length);
}
void InputMethodAPI::Shutdown() {
// UnregisterObserver may have already been called in OnListenerAdded,
// but it is safe to call it more than once.
ExtensionSystem::Get(context_)->event_router()->UnregisterObserver(this);
}
void InputMethodAPI::OnListenerAdded(
const extensions::EventListenerInfo& details) {
DCHECK(!input_method_event_router_.get());
input_method_event_router_.reset(
new chromeos::ExtensionInputMethodEventRouter(context_));
ExtensionSystem::Get(context_)->event_router()->UnregisterObserver(this);
}
static base::LazyInstance<ProfileKeyedAPIFactory<InputMethodAPI> >
g_factory = LAZY_INSTANCE_INITIALIZER;
// static
ProfileKeyedAPIFactory<InputMethodAPI>* InputMethodAPI::GetFactoryInstance() {
return g_factory.Pointer();
}
} // namespace extensions
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