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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_EXTENSIONS_EXTENSION_ACTION_MANAGER_H_
#define CHROME_BROWSER_EXTENSIONS_EXTENSION_ACTION_MANAGER_H_
#include <map>
#include <memory>
#include <string>
#include "base/scoped_observer.h"
#include "chrome/common/extensions/api/extension_action/action_info.h"
#include "components/keyed_service/core/keyed_service.h"
#include "extensions/browser/extension_registry_observer.h"
class ExtensionAction;
class Profile;
namespace extensions {
class Extension;
class ExtensionRegistry;
// 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(Profile* profile);
~ExtensionActionManager() override;
// Returns this profile's ExtensionActionManager. One instance is
// shared between a profile and its incognito version.
static ExtensionActionManager* Get(content::BrowserContext* browser_context);
// Retrieves the page action, browser action, or system indicator for
// |extension|.
// If the result is not NULL, it remains valid until the extension is
// unloaded.
ExtensionAction* GetPageAction(const Extension& extension) const;
ExtensionAction* GetBrowserAction(const Extension& extension) const;
ExtensionAction* GetSystemIndicator(const Extension& extension) const;
// Returns either the PageAction or BrowserAction for |extension|, or NULL if
// none exists. Since an extension can only declare one of Browser|PageAction,
// this is okay to use anywhere you need a generic "ExtensionAction".
// Since SystemIndicators are used differently and don't follow this
// rule of mutual exclusion, they are not checked or returned.
ExtensionAction* GetExtensionAction(const Extension& extension) const;
// Gets the best fit ExtensionAction for the given |extension|. This takes
// into account |extension|'s browser or page actions, if any, along with its
// name and any declared icons.
std::unique_ptr<ExtensionAction> GetBestFitAction(
const Extension& extension,
ActionInfo::Type type) const;
private:
// Implement ExtensionRegistryObserver.
void OnExtensionUnloaded(content::BrowserContext* browser_context,
const Extension* extension,
UnloadedExtensionReason reason) override;
Profile* profile_;
// Listen to extension unloaded notifications.
ScopedObserver<ExtensionRegistry, ExtensionRegistryObserver>
extension_registry_observer_;
// 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 a page action or browser
// action.
using ExtIdToActionMap =
std::map<std::string, std::unique_ptr<ExtensionAction>>;
mutable ExtIdToActionMap page_actions_;
mutable ExtIdToActionMap browser_actions_;
mutable ExtIdToActionMap system_indicators_;
};
} // namespace extensions
#endif // CHROME_BROWSER_EXTENSIONS_EXTENSION_ACTION_MANAGER_H_
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