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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.
#ifndef CHROME_BROWSER_EXTENSIONS_EXTENSION_SETTINGS_API_H_
#define CHROME_BROWSER_EXTENSIONS_EXTENSION_SETTINGS_API_H_
#pragma once
#include "base/compiler_specific.h"
#include "base/memory/ref_counted.h"
#include "chrome/browser/extensions/extension_function.h"
#include "chrome/browser/extensions/extension_settings_backend.h"
#include "chrome/browser/extensions/extension_settings_storage.h"
// Superclass of all settings functions.
class SettingsFunction : public AsyncExtensionFunction {
protected:
virtual bool RunImpl() OVERRIDE;
// Extension settings function implementations should do their work here.
// This runs on the FILE thread.
//
// Implementations should fill in args themselves, though (like RunImpl)
// may return false to imply failure.
virtual bool RunWithStorage(
scoped_refptr<ExtensionSettingsObserverList> observers,
ExtensionSettingsStorage* storage) = 0;
// Sets error_ or result_ depending on the value of a storage Result, and
// returns whether the Result implies success (i.e. !error).
bool UseResult(
scoped_refptr<ExtensionSettingsObserverList> observers,
const ExtensionSettingsStorage::Result& storage_result);
private:
// Called via PostTask from RunImpl. Calls RunWithStorage and then
// SendReponse with its success value.
void RunWithStorageOnFileThread(
scoped_refptr<ExtensionSettingsObserverList> observers,
ExtensionSettingsStorage* storage);
};
class GetSettingsFunction : public SettingsFunction {
public:
DECLARE_EXTENSION_FUNCTION_NAME("experimental.settings.get");
protected:
virtual bool RunWithStorage(
scoped_refptr<ExtensionSettingsObserverList> observers,
ExtensionSettingsStorage* storage) OVERRIDE;
};
class SetSettingsFunction : public SettingsFunction {
public:
DECLARE_EXTENSION_FUNCTION_NAME("experimental.settings.set");
protected:
virtual bool RunWithStorage(
scoped_refptr<ExtensionSettingsObserverList> observers,
ExtensionSettingsStorage* storage) OVERRIDE;
};
class RemoveSettingsFunction : public SettingsFunction {
public:
DECLARE_EXTENSION_FUNCTION_NAME("experimental.settings.remove");
protected:
virtual bool RunWithStorage(
scoped_refptr<ExtensionSettingsObserverList> observers,
ExtensionSettingsStorage* storage) OVERRIDE;
};
class ClearSettingsFunction : public SettingsFunction {
public:
DECLARE_EXTENSION_FUNCTION_NAME("experimental.settings.clear");
protected:
virtual bool RunWithStorage(
scoped_refptr<ExtensionSettingsObserverList> observers,
ExtensionSettingsStorage* storage) OVERRIDE;
};
#endif // CHROME_BROWSER_EXTENSIONS_EXTENSION_SETTINGS_API_H_
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