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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.
#ifndef CHROME_BROWSER_UI_WEBUI_HELP_VERSION_UPDATER_H_
#define CHROME_BROWSER_UI_WEBUI_HELP_VERSION_UPDATER_H_
#include <string>
#include "base/callback.h"
#include "base/strings/string16.h"
namespace content {
class WebContents;
}
// Interface implemented to expose per-platform updating functionality.
class VersionUpdater {
public:
// Update process state machine.
enum Status {
CHECKING,
UPDATING,
NEARLY_UPDATED,
UPDATED,
FAILED,
FAILED_OFFLINE,
FAILED_CONNECTION_TYPE_DISALLOWED,
DISABLED,
};
#if defined(OS_MACOSX)
// Promotion state.
enum PromotionState {
PROMOTE_HIDDEN,
PROMOTE_ENABLED,
PROMOTE_DISABLED
};
#endif // defined(OS_MACOSX)
// TODO(jhawkins): Use a delegate interface instead of multiple callback
// types.
#if defined(OS_CHROMEOS)
typedef base::Callback<void(const std::string&)> ChannelCallback;
#endif
// Used to update the client of status changes. int parameter is the progress
// and should only be non-zero for the UPDATING state.
// base::string16 parameter is a message explaining a failure.
typedef base::Callback<void(Status, int, const base::string16&)>
StatusCallback;
#if defined(OS_MACOSX)
// Used to show or hide the promote UI elements.
typedef base::Callback<void(PromotionState)> PromoteCallback;
#endif
virtual ~VersionUpdater() {}
// Sub-classes must implement this method to create the respective
// specialization.
static VersionUpdater* Create(content::WebContents* web_contents);
// Begins the update process by checking for update availability.
// |status_callback| is called for each status update. |promote_callback| can
// be used to show or hide the promote UI elements.
virtual void CheckForUpdate(const StatusCallback& status_callback
#if defined(OS_MACOSX)
, const PromoteCallback& promote_callback
#endif
) = 0;
#if defined(OS_MACOSX)
// Make updates available for all users.
virtual void PromoteUpdater() const = 0;
#endif
// Relaunches the browser, generally after being updated.
virtual void RelaunchBrowser() const = 0;
#if defined(OS_CHROMEOS)
virtual void SetChannel(const std::string& channel,
bool is_powerwash_allowed) = 0;
virtual void GetChannel(bool get_current_channel,
const ChannelCallback& callback) = 0;
#endif
};
#endif // CHROME_BROWSER_UI_WEBUI_HELP_VERSION_UPDATER_H_
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