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// Copyright 2015 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "chrome/browser/ash/extensions/dictionary_event_router.h"
#include <memory>
#include <string>
#include <utility>
#include <vector>
#include "base/json/json_writer.h"
#include "base/values.h"
#include "chrome/browser/ash/extensions/input_method_api.h"
#include "chrome/browser/spellchecker/spellcheck_factory.h"
#include "chrome/common/extensions/api/input_method_private.h"
#include "content/public/browser/browser_context.h"
#include "extensions/browser/event_router.h"
#include "extensions/browser/extension_system.h"
namespace OnDictionaryChanged =
extensions::api::input_method_private::OnDictionaryChanged;
namespace OnDictionaryLoaded =
extensions::api::input_method_private::OnDictionaryLoaded;
namespace chromeos {
ExtensionDictionaryEventRouter::ExtensionDictionaryEventRouter(
content::BrowserContext* context)
: context_(context), loaded_() {
SpellcheckService* spellcheck = SpellcheckServiceFactory::GetForContext(
context_);
if (spellcheck) {
service_ = spellcheck->GetWeakPtr();
service_->GetCustomDictionary()->AddObserver(this);
loaded_ = service_->GetCustomDictionary()->IsLoaded();
}
}
ExtensionDictionaryEventRouter::~ExtensionDictionaryEventRouter() {
if (service_)
service_->GetCustomDictionary()->RemoveObserver(this);
}
void ExtensionDictionaryEventRouter::DispatchLoadedEventIfLoaded() {
if (!loaded_)
return;
extensions::EventRouter* router = extensions::EventRouter::Get(context_);
if (!router->HasEventListener(OnDictionaryLoaded::kEventName)) {
return;
}
// The router will only send the event to extensions that are listening.
auto event = std::make_unique<extensions::Event>(
extensions::events::INPUT_METHOD_PRIVATE_ON_DICTIONARY_LOADED,
OnDictionaryLoaded::kEventName, base::Value::List(), context_);
router->BroadcastEvent(std::move(event));
}
void ExtensionDictionaryEventRouter::OnCustomDictionaryLoaded() {
loaded_ = true;
DispatchLoadedEventIfLoaded();
}
void ExtensionDictionaryEventRouter::OnCustomDictionaryChanged(
const SpellcheckCustomDictionary::Change& dictionary_change) {
extensions::EventRouter* router = extensions::EventRouter::Get(context_);
if (!router->HasEventListener(OnDictionaryChanged::kEventName)) {
return;
}
base::Value::List added_words;
added_words.reserve(dictionary_change.to_add().size());
for (const std::string& word : dictionary_change.to_add())
added_words.Append(word);
base::Value::List removed_words;
removed_words.reserve(dictionary_change.to_remove().size());
for (const std::string& word : dictionary_change.to_remove())
removed_words.Append(word);
base::Value::List args;
args.Append(std::move(added_words));
args.Append(std::move(removed_words));
// The router will only send the event to extensions that are listening.
auto event = std::make_unique<extensions::Event>(
extensions::events::INPUT_METHOD_PRIVATE_ON_DICTIONARY_CHANGED,
OnDictionaryChanged::kEventName, std::move(args), context_);
router->BroadcastEvent(std::move(event));
}
} // namespace chromeos
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