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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 EXTENSIONS_BROWSER_EXTENSION_ACTION_MANAGER_H_
#define EXTENSIONS_BROWSER_EXTENSION_ACTION_MANAGER_H_
#include <map>
#include <memory>
#include <string>
#include "base/scoped_observation.h"
#include "components/keyed_service/core/keyed_service.h"
#include "extensions/browser/extension_registry.h"
#include "extensions/browser/extension_registry_observer.h"
#include "extensions/common/api/extension_action/action_info.h"
namespace content {
class BrowserContext;
}
namespace extensions {
class Extension;
class ExtensionAction;
// Owns the ExtensionActions associated with each extension. These actions live
// while an extension is loaded and are destroyed on unload.
class ExtensionActionManager : public KeyedService,
public ExtensionRegistryObserver {
public:
explicit ExtensionActionManager(content::BrowserContext* browser_context);
~ExtensionActionManager() override;
// Returns this |browser_context|'s ExtensionActionManager. One instance is
// shared between a BrowserContext and its off-the-record version.
static ExtensionActionManager* Get(content::BrowserContext* browser_context);
// Returns the action associated with the extension (specified through the
// "action", "browser_action", or "page_action" keys), or null if none exists.
// Since an extension can only declare one of these, this is safe to use
// anywhere callers simply need to get at the action and don't care about
// the manifest key.
ExtensionAction* GetExtensionAction(const Extension& extension) const;
private:
// Implement ExtensionRegistryObserver.
void OnExtensionUnloaded(content::BrowserContext* browser_context,
const Extension* extension,
UnloadedExtensionReason reason) override;
content::BrowserContext* browser_context_;
// Listen to extension unloaded notifications.
base::ScopedObservation<ExtensionRegistry, ExtensionRegistryObserver>
extension_registry_observation_{this};
// Keyed by Extension ID. These maps are populated lazily when their
// ExtensionAction is first requested, and the entries are removed when the
// extension is unloaded. Not every extension has an action.
using ExtIdToActionMap =
std::map<std::string, std::unique_ptr<ExtensionAction>>;
mutable ExtIdToActionMap actions_;
};
} // namespace extensions
#endif // EXTENSIONS_BROWSER_EXTENSION_ACTION_MANAGER_H_
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