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Unified Diff: chrome/browser/plugin_data_remover_helper.h

Issue 5579002: Add a preference to clear plugin data on browser shutdown. (Closed) Base URL: svn://svn.chromium.org/chrome/trunk/src
Patch Set: mooh Created 10 years ago
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Index: chrome/browser/plugin_data_remover_helper.h
diff --git a/chrome/browser/plugin_data_remover_helper.h b/chrome/browser/plugin_data_remover_helper.h
new file mode 100644
index 0000000000000000000000000000000000000000..a1a6537f587aef28e14815e65dbd628341bf4cca
--- /dev/null
+++ b/chrome/browser/plugin_data_remover_helper.h
@@ -0,0 +1,51 @@
+// Copyright (c) 2010 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 "base/ref_counted.h"
+#include "chrome/browser/prefs/pref_member.h"
+#include "chrome/common/notification_observer.h"
+#include "chrome/common/notification_registrar.h"
+
+class Profile;
+
+// 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 PrefService outlives this object.
+class PluginDataRemoverHelper : public NotificationObserver {
+ public:
+ PluginDataRemoverHelper();
+ ~PluginDataRemoverHelper();
+
+ // Binds this object to the |pref_name| preference in |prefs|, notifying
+ // |observer| if the value changes.
+ // This fires off a request to the NPAPI::PluginList (via PluginDataRemover)
+ // on the FILE thread to get the list of installed plug-ins.
+ void Init(const char* pref_name,
+ PrefService* prefs,
+ NotificationObserver* observer);
+
+ bool GetValue() const { return pref_.GetValue(); }
+
+ // NotificationObserver methods:
+ virtual void Observe(NotificationType type,
+ const NotificationSource& source,
+ const NotificationDetails& details);
+
+ private:
+ class Internal;
+
+ BooleanPrefMember pref_;
+ NotificationRegistrar registrar_;
+ scoped_refptr<Internal> internal_;
+
+ DISALLOW_COPY_AND_ASSIGN(PluginDataRemoverHelper);
+};
+
+#endif // CHROME_BROWSER_PLUGIN_DATA_REMOVER_HELPER_H_

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