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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 "input_method_event_router.h"
#include <algorithm>
#include "base/json/json_writer.h"
#include "base/values.h"
#include "chrome/browser/chromeos/input_method/input_method_configuration.h"
#include "chrome/browser/chromeos/web_socket_proxy_controller.h"
#include "chrome/browser/extensions/event_names.h"
#include "chrome/browser/extensions/event_router.h"
#include "chrome/browser/extensions/extension_system.h"
#include "chrome/browser/profiles/profile_manager.h"
#include "chrome/browser/profiles/profile.h"
namespace {
// Prefix, which is used by XKB.
const char kXkbPrefix[] = "xkb:";
} // namespace
namespace chromeos {
ExtensionInputMethodEventRouter::ExtensionInputMethodEventRouter() {
input_method::GetInputMethodManager()->AddObserver(this);
}
ExtensionInputMethodEventRouter::~ExtensionInputMethodEventRouter() {
input_method::GetInputMethodManager()->RemoveObserver(this);
}
void ExtensionInputMethodEventRouter::InputMethodChanged(
input_method::InputMethodManager *manager,
bool show_message) {
Profile *profile = ProfileManager::GetDefaultProfile();
extensions::EventRouter *router =
extensions::ExtensionSystem::Get(profile)->event_router();
if (!router->HasEventListener(extensions::event_names::kOnInputMethodChanged))
return;
scoped_ptr<ListValue> args(new ListValue());
StringValue *input_method_name = new StringValue(
GetInputMethodForXkb(manager->GetCurrentInputMethod().id()));
args->Append(input_method_name);
// The router will only send the event to extensions that are listening.
scoped_ptr<extensions::Event> event(new extensions::Event(
extensions::event_names::kOnInputMethodChanged, args.Pass()));
event->restrict_to_profile = profile;
extensions::ExtensionSystem::Get(profile)->event_router()->
BroadcastEvent(event.Pass());
}
std::string ExtensionInputMethodEventRouter::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);
}
} // namespace chromeos
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