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// Copyright (c) 2011 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 "base/bind.h"
#include "base/values.h"
#include "chrome/browser/extensions/extension_service.h"
#include "chrome/browser/extensions/extension_settings_api.h"
#include "chrome/browser/profiles/profile.h"
#include "content/public/browser/browser_thread.h"
using content::BrowserThread;
namespace {
const char* kUnsupportedArgumentType = "Unsupported argument type";
} // namespace
// SettingsFunction
bool SettingsFunction::RunImpl() {
ExtensionSettingsFrontend* frontend =
profile()->GetExtensionService()->extension_settings_frontend();
frontend->RunWithStorage(
extension_id(),
base::Bind(
&SettingsFunction::RunWithStorageOnFileThread,
this,
frontend->GetObservers()));
return true;
}
void SettingsFunction::RunWithStorageOnFileThread(
scoped_refptr<ExtensionSettingsObserverList> observers,
ExtensionSettingsStorage* storage) {
DCHECK(BrowserThread::CurrentlyOn(BrowserThread::FILE));
bool success = false;
if (storage) {
success = RunWithStorage(observers.get(), storage);
}
BrowserThread::PostTask(
BrowserThread::UI,
FROM_HERE,
base::Bind(&SettingsFunction::SendResponse, this, success));
}
bool SettingsFunction::UseResult(
scoped_refptr<ExtensionSettingsObserverList> observers,
const ExtensionSettingsStorage::Result& storage_result) {
DCHECK(BrowserThread::CurrentlyOn(BrowserThread::FILE));
if (storage_result.HasError()) {
error_ = storage_result.GetError();
return false;
}
const DictionaryValue* settings = storage_result.GetSettings();
if (settings) {
result_.reset(settings->DeepCopy());
}
const std::set<std::string>* changed_keys = storage_result.GetChangedKeys();
if (changed_keys && !changed_keys->empty()) {
ExtensionSettingChanges::Builder changes;
for (std::set<std::string>::const_iterator it = changed_keys->begin();
it != changed_keys->end(); ++it) {
const Value* old_value = storage_result.GetOldValue(*it);
const Value* new_value = storage_result.GetNewValue(*it);
changes.AppendChange(
*it,
old_value ? old_value->DeepCopy() : NULL,
new_value ? new_value->DeepCopy() : NULL);
}
observers->Notify(
&ExtensionSettingsObserver::OnSettingsChanged,
profile(),
extension_id(),
changes.Build());
}
return true;
}
// Concrete settings functions
// Adds all StringValues from a ListValue to a vector of strings.
static void AddAllStringValues(
const ListValue& from, std::vector<std::string>* to) {
DCHECK(to->empty());
std::string as_string;
for (ListValue::const_iterator it = from.begin(); it != from.end(); ++it) {
if ((*it)->GetAsString(&as_string)) {
to->push_back(as_string);
}
}
}
bool GetSettingsFunction::RunWithStorage(
scoped_refptr<ExtensionSettingsObserverList> observers,
ExtensionSettingsStorage* storage) {
DCHECK(BrowserThread::CurrentlyOn(BrowserThread::FILE));
Value *input;
EXTENSION_FUNCTION_VALIDATE(args_->Get(0, &input));
std::string as_string;
ListValue* as_list;
if (input->IsType(Value::TYPE_NULL)) {
return UseResult(observers, storage->Get());
} else if (input->GetAsString(&as_string)) {
return UseResult(observers, storage->Get(as_string));
} else if (input->GetAsList(&as_list)) {
std::vector<std::string> string_list;
AddAllStringValues(*as_list, &string_list);
return UseResult(observers, storage->Get(string_list));
}
return UseResult(
observers, ExtensionSettingsStorage::Result(kUnsupportedArgumentType));
}
bool SetSettingsFunction::RunWithStorage(
scoped_refptr<ExtensionSettingsObserverList> observers,
ExtensionSettingsStorage* storage) {
DCHECK(BrowserThread::CurrentlyOn(BrowserThread::FILE));
DictionaryValue *input;
EXTENSION_FUNCTION_VALIDATE(args_->GetDictionary(0, &input));
return UseResult(observers, storage->Set(*input));
}
bool RemoveSettingsFunction::RunWithStorage(
scoped_refptr<ExtensionSettingsObserverList> observers,
ExtensionSettingsStorage* storage) {
DCHECK(BrowserThread::CurrentlyOn(BrowserThread::FILE));
Value *input;
EXTENSION_FUNCTION_VALIDATE(args_->Get(0, &input));
std::string as_string;
ListValue* as_list;
if (input->GetAsString(&as_string)) {
return UseResult(observers, storage->Remove(as_string));
} else if (input->GetAsList(&as_list)) {
std::vector<std::string> string_list;
AddAllStringValues(*as_list, &string_list);
return UseResult(observers, storage->Remove(string_list));
}
return UseResult(
observers, ExtensionSettingsStorage::Result(kUnsupportedArgumentType));
}
bool ClearSettingsFunction::RunWithStorage(
scoped_refptr<ExtensionSettingsObserverList> observers,
ExtensionSettingsStorage* storage) {
DCHECK(BrowserThread::CurrentlyOn(BrowserThread::FILE));
return UseResult(observers, storage->Clear());
}
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