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// Copyright 2018 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_SHELL_BROWSER_SHELL_EXTENSION_LOADER_H_
#define EXTENSIONS_SHELL_BROWSER_SHELL_EXTENSION_LOADER_H_
#include "base/memory/raw_ptr.h"
#include "base/memory/scoped_refptr.h"
#include "base/memory/weak_ptr.h"
#include "extensions/browser/extension_registrar.h"
#include "extensions/common/extension_id.h"
#include "extensions/shell/browser/shell_keep_alive_requester.h"
namespace base {
class FilePath;
} // namespace base
namespace content {
class BrowserContext;
} // namespace content
namespace extensions {
class Extension;
// Handles extension loading and reloading using ExtensionRegistrar.
class ShellExtensionLoader : public ExtensionRegistrar::Delegate {
public:
explicit ShellExtensionLoader(content::BrowserContext* browser_context);
ShellExtensionLoader(const ShellExtensionLoader&) = delete;
ShellExtensionLoader& operator=(const ShellExtensionLoader&) = delete;
~ShellExtensionLoader() override;
// Loads an unpacked extension from a directory synchronously. Returns the
// extension on success, or nullptr otherwise.
const Extension* LoadExtension(const base::FilePath& extension_dir);
// Starts reloading the extension. A keep-alive is maintained until the
// reload succeeds/fails. If the extension is an app, it will be launched upon
// reloading.
// This may invalidate references to the old Extension object, so it takes the
// ID by value.
void ReloadExtension(ExtensionId extension_id);
private:
// If the extension loaded successfully, enables it. If it's an app, launches
// it. If the load failed, updates ShellKeepAliveRequester.
void FinishExtensionReload(const ExtensionId old_extension_id,
scoped_refptr<const Extension> extension);
// Given an extension ID and/or path, loads that extension as a reload.
void DoLoadExtensionForReload(const ExtensionId& extension_id,
const base::FilePath& path);
// ExtensionRegistrar::Delegate:
void PreAddExtension(const Extension* extension,
const Extension* old_extension) override;
void OnAddNewOrUpdatedExtension(const Extension* extension) override;
void PostActivateExtension(scoped_refptr<const Extension> extension) override;
void PostDeactivateExtension(
scoped_refptr<const Extension> extension) override;
void PreUninstallExtension(scoped_refptr<const Extension> extension) override;
void PostUninstallExtension(scoped_refptr<const Extension> extension,
base::OnceClosure done_callback) override;
void LoadExtensionForReload(const ExtensionId& extension_id,
const base::FilePath& path) override;
void LoadExtensionForReloadWithQuietFailure(
const ExtensionId& extension_id,
const base::FilePath& path) override;
void ShowExtensionDisabledError(const Extension* extension,
bool is_remote_install) override;
bool CanEnableExtension(const Extension* extension) override;
bool CanDisableExtension(const Extension* extension) override;
void GrantActivePermissions(const Extension* extension) override;
void UpdateExternalExtensionAlert() override;
void OnExtensionInstalled(const Extension* extension,
const syncer::StringOrdinal& page_ordinal,
int install_flags,
base::Value::Dict ruleset_install_prefs) override;
raw_ptr<content::BrowserContext> browser_context_; // Not owned.
// Registers and unregisters extensions.
raw_ptr<ExtensionRegistrar> extension_registrar_; // Not owned.
// Holds keep-alives for relaunching apps.
ShellKeepAliveRequester keep_alive_requester_;
// Indicates that we posted the (asynchronous) task to start reloading.
// Used by ReloadExtension() to check whether ExtensionRegistrar calls
// LoadExtensionForReload().
bool did_schedule_reload_ = false;
base::WeakPtrFactory<ShellExtensionLoader> weak_factory_{this};
};
} // namespace extensions
#endif // EXTENSIONS_SHELL_BROWSER_SHELL_EXTENSION_LOADER_H_
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