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// Copyright 2025 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#ifndef EXTENSIONS_BROWSER_DELAYED_INSTALL_MANAGER_H_
#define EXTENSIONS_BROWSER_DELAYED_INSTALL_MANAGER_H_
#include <map>
#include "base/memory/raw_ptr.h"
#include "components/keyed_service/core/keyed_service.h"
#include "extensions/browser/extension_prefs.h"
#include "extensions/browser/install_gate.h"
#include "extensions/buildflags/buildflags.h"
#include "extensions/common/extension_id.h"
#include "extensions/common/extension_set.h"
static_assert(BUILDFLAG(ENABLE_EXTENSIONS_CORE));
namespace content {
class BrowserContext;
}
namespace extensions {
class ExtensionPrefs;
class ExtensionRegistrar;
class InstallGate;
// Manages a set of extension installs delayed for various reasons. The reason
// for delayed install is stored in ExtensionPrefs. These are not part of
// ExtensionRegistry because they are not yet installed.
class DelayedInstallManager : public KeyedService {
public:
explicit DelayedInstallManager(content::BrowserContext* context);
DelayedInstallManager(const DelayedInstallManager&) = delete;
DelayedInstallManager& operator=(const DelayedInstallManager&) = delete;
~DelayedInstallManager() override;
static DelayedInstallManager* Get(content::BrowserContext* context);
// KeyedService:
void Shutdown() override;
// Returns true if an extension is in the delayed install set.
bool Contains(const ExtensionId& id) const;
// Adds an extension to the delayed install set.
void Insert(scoped_refptr<const Extension> extension);
// Removes an extension from the delayed install set.
void Remove(const ExtensionId& id);
// Returns an update for an extension with the specified id, if installation
// of that update was previously delayed because the extension was in use. If
// no updates are pending for the extension returns null.
const Extension* GetPendingExtensionUpdate(const ExtensionId& id) const;
// Finish install (if possible) of extensions that were still delayed while
// the browser was shut down.
void FinishInstallationsDelayedByShutdown();
// Checks for delayed installation for all pending installs.
void MaybeFinishDelayedInstallations();
// Attempts finishing installation of an update for an extension with the
// specified id, when installation of that extension was previously delayed.
// `install_immediately` - Whether the extension should be installed if it's
// currently in use.
// Returns whether the extension installation was finished.
bool FinishDelayedInstallationIfReady(const ExtensionId& extension_id,
bool install_immediately);
// Register/unregister an InstallGate with the service.
void RegisterInstallGate(ExtensionPrefs::DelayReason reason,
InstallGate* install_delayer);
void UnregisterInstallGate(InstallGate* install_delayer);
// Helper to determine if installing an extensions should proceed immediately,
// or if we should delay the install until further notice, or if the install
// should be aborted. A pending install is delayed or aborted when any of the
// delayers say so and only proceeds when all delayers return INSTALL.
// `extension` is the extension to be installed. `install_immediately` is the
// install flag set with the install. `reason` is the reason associated with
// the install delayer that wants to defer or abort the install.
InstallGate::Action ShouldDelayExtensionInstall(
const Extension* extension,
bool install_immediately,
ExtensionPrefs::DelayReason* reason) const;
const ExtensionSet& delayed_installs() const { return delayed_installs_; }
private:
raw_ptr<ExtensionPrefs> extension_prefs_;
raw_ptr<ExtensionRegistrar> extension_registrar_;
ExtensionSet delayed_installs_;
using InstallGateRegistry = std::map<ExtensionPrefs::DelayReason,
raw_ptr<InstallGate, CtnExperimental>>;
InstallGateRegistry install_delayer_registry_;
};
} // namespace extensions
#endif // EXTENSIONS_BROWSER_DELAYED_INSTALL_MANAGER_H_
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