61 lines
1.7 KiB
C++
61 lines
1.7 KiB
C++
// Copyright (c) 2016 GitHub, Inc.
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// Use of this source code is governed by the MIT license that can be
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// found in the LICENSE file.
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#ifndef ATOM_BROWSER_RENDER_PROCESS_PREFERENCES_H_
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#define ATOM_BROWSER_RENDER_PROCESS_PREFERENCES_H_
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#include <memory>
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#include <unordered_map>
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#include "base/callback.h"
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#include "base/values.h"
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#include "content/public/browser/notification_observer.h"
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#include "content/public/browser/notification_registrar.h"
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namespace content {
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class RenderProcessHost;
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}
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namespace atom {
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// Sets user preferences for render processes.
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class RenderProcessPreferences : public content::NotificationObserver {
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public:
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using Predicate = base::Callback<bool(content::RenderProcessHost*)>;
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// The |predicate| is used to determine whether to set preferences for a
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// render process.
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explicit RenderProcessPreferences(const Predicate& predicate);
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virtual ~RenderProcessPreferences();
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int AddEntry(const base::DictionaryValue& entry);
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void RemoveEntry(int id);
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private:
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// content::NotificationObserver:
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void Observe(int type,
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const content::NotificationSource& source,
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const content::NotificationDetails& details) override;
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void UpdateCache();
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// Manages our notification registrations.
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content::NotificationRegistrar registrar_;
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Predicate predicate_;
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int next_id_;
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std::unordered_map<int, std::unique_ptr<base::DictionaryValue>> entries_;
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// We need to convert the |entries_| to ListValue for multiple times, this
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// caches is only updated when we are sending messages.
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bool cache_needs_update_;
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base::ListValue cached_entries_;
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DISALLOW_COPY_AND_ASSIGN(RenderProcessPreferences);
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};
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} // namespace atom
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#endif // ATOM_BROWSER_RENDER_PROCESS_PREFERENCES_H_
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