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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 "chromeos/ime/extension_ime_util.h"
#include "chromeos/ime/input_method_descriptor.h"
#include "chromeos/ime/input_method_manager.h"
#include "extensions/browser/extension_function_registry.h"
#include "extensions/browser/extension_system.h"
#include "extensions/common/value_builder.h"
namespace {
// Prefix, which is used by XKB.
const char kXkbPrefix[] = "xkb:";
} // namespace
namespace extensions {
ExtensionFunction::ResponseAction GetCurrentInputMethodFunction::Run() {
#if !defined(OS_CHROMEOS)
EXTENSION_FUNCTION_VALIDATE(false);
#else
chromeos::input_method::InputMethodManager* manager =
chromeos::input_method::InputMethodManager::Get();
return RespondNow(OneArgument(
new base::StringValue(manager->GetCurrentInputMethod().id())));
#endif
}
ExtensionFunction::ResponseAction SetCurrentInputMethodFunction::Run() {
#if !defined(OS_CHROMEOS)
EXTENSION_FUNCTION_VALIDATE(false);
#else
std::string new_input_method;
EXTENSION_FUNCTION_VALIDATE(args_->GetString(0, &new_input_method));
chromeos::input_method::InputMethodManager* manager =
chromeos::input_method::InputMethodManager::Get();
const std::vector<std::string>& input_methods =
manager->GetActiveInputMethodIds();
for (size_t i = 0; i < input_methods.size(); ++i) {
const std::string& input_method = input_methods[i];
if (input_method == new_input_method) {
manager->ChangeInputMethod(new_input_method);
return RespondNow(NoArguments());
}
}
return RespondNow(Error("Invalid input method id."));
#endif
}
ExtensionFunction::ResponseAction GetInputMethodsFunction::Run() {
#if !defined(OS_CHROMEOS)
EXTENSION_FUNCTION_VALIDATE(false);
#else
base::ListValue* output = new base::ListValue();
chromeos::input_method::InputMethodManager* manager =
chromeos::input_method::InputMethodManager::Get();
scoped_ptr<chromeos::input_method::InputMethodDescriptors> input_methods =
manager->GetActiveInputMethods();
for (size_t i = 0; i < input_methods->size(); ++i) {
const chromeos::input_method::InputMethodDescriptor& input_method =
(*input_methods)[i];
base::DictionaryValue* val = new base::DictionaryValue();
val->SetString("id", input_method.id());
val->SetString("name", input_method.name());
val->SetString("indicator", input_method.indicator());
output->Append(val);
}
return RespondNow(OneArgument(output));
#endif
}
// static
const char InputMethodAPI::kOnInputMethodChanged[] =
"inputMethodPrivate.onChanged";
InputMethodAPI::InputMethodAPI(content::BrowserContext* context)
: context_(context) {
EventRouter::Get(context_)->RegisterObserver(this, kOnInputMethodChanged);
ExtensionFunctionRegistry* registry =
ExtensionFunctionRegistry::GetInstance();
registry->RegisterFunction<GetCurrentInputMethodFunction>();
registry->RegisterFunction<SetCurrentInputMethodFunction>();
registry->RegisterFunction<GetInputMethodsFunction>();
}
InputMethodAPI::~InputMethodAPI() {
}
// static
std::string InputMethodAPI::GetInputMethodForXkb(const std::string& xkb_id) {
std::string xkb_prefix =
chromeos::extension_ime_util::GetInputMethodIDByEngineID(kXkbPrefix);
size_t prefix_length = xkb_prefix.length();
DCHECK(xkb_id.substr(0, prefix_length) == xkb_prefix);
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.
EventRouter::Get(context_)->UnregisterObserver(this);
}
void InputMethodAPI::OnListenerAdded(
const extensions::EventListenerInfo& details) {
DCHECK(!input_method_event_router_.get());
input_method_event_router_.reset(
new chromeos::ExtensionInputMethodEventRouter(context_));
EventRouter::Get(context_)->UnregisterObserver(this);
}
static base::LazyInstance<BrowserContextKeyedAPIFactory<InputMethodAPI> >
g_factory = LAZY_INSTANCE_INITIALIZER;
// static
BrowserContextKeyedAPIFactory<InputMethodAPI>*
InputMethodAPI::GetFactoryInstance() {
return g_factory.Pointer();
}
} // namespace extensions
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