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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_PLUGIN_DATA_REMOVER_HELPER_H_
#define CHROME_BROWSER_PLUGIN_DATA_REMOVER_HELPER_H_
#pragma once
#include <vector>
#include "base/memory/ref_counted.h"
#include "base/memory/weak_ptr.h"
#include "chrome/browser/prefs/pref_member.h"
#include "content/public/browser/notification_observer.h"
#include "content/public/browser/notification_registrar.h"
class PluginPrefs;
class Profile;
namespace webkit {
struct WebPluginInfo;
}
// Helper class modeled after BooleanPrefMember to (asynchronously) update
// the preference specifying whether clearing plug-in data is supported
// by an installed plug-in.
// It should only be used from the UI thread. The client has to make sure that
// the passed profile outlives this object.
class PluginDataRemoverHelper : public content::NotificationObserver {
public:
PluginDataRemoverHelper();
virtual ~PluginDataRemoverHelper();
// Binds this object to the |pref_name| preference in the profile's
// PrefService, notifying |observer| if the value changes.
// This asynchronously calls the PluginService to get the list of installed
// plug-ins.
void Init(const char* pref_name,
Profile* profile,
content::NotificationObserver* observer);
bool GetValue() const { return pref_.GetValue(); }
// Like PluginDataRemover::IsSupported, but checks that the returned plugin
// is enabled by PluginPrefs
static bool IsSupported(PluginPrefs* plugin_prefs);
// content::NotificationObserver methods:
virtual void Observe(int type,
const content::NotificationSource& source,
const content::NotificationDetails& details) OVERRIDE;
private:
void StartUpdate();
void GotPlugins(scoped_refptr<PluginPrefs> plugin_prefs,
const std::vector<webkit::WebPluginInfo>& plugins);
BooleanPrefMember pref_;
content::NotificationRegistrar registrar_;
// Weak pointer.
Profile* profile_;
base::WeakPtrFactory<PluginDataRemoverHelper> factory_;
DISALLOW_COPY_AND_ASSIGN(PluginDataRemoverHelper);
};
#endif // CHROME_BROWSER_PLUGIN_DATA_REMOVER_HELPER_H_
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