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// Copyright 2014 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_SHARED_MODULE_SERVICE_H_
#define CHROME_BROWSER_EXTENSIONS_SHARED_MODULE_SERVICE_H_
#include <list>
#include "base/macros.h"
#include "base/scoped_observer.h"
#include "chrome/browser/extensions/install_gate.h"
#include "extensions/browser/extension_registry_observer.h"
#include "extensions/common/manifest_handlers/shared_module_info.h"
namespace content {
class BrowserContext;
}
namespace extensions {
class Extension;
class ExtensionSet;
class ExtensionRegistry;
class SharedModuleService : public ExtensionRegistryObserver,
public InstallGate {
public:
enum ImportStatus {
// No imports needed.
IMPORT_STATUS_OK,
// Imports are needed, but can be satisfied (i.e., there are missing or
// outdated imports for a webstore extension).
IMPORT_STATUS_UNSATISFIED,
// Imports are needed, and can't be satisfied (i.e., missing or outdated
// imports for an extension not in the webstore).
IMPORT_STATUS_UNRECOVERABLE
};
explicit SharedModuleService(content::BrowserContext* context);
~SharedModuleService() override;
// Checks an extension's imports. Imports that are not installed are stored
// in |missing_modules|, and imports that are out of date are stored in
// |outdated_modules|.
ImportStatus CheckImports(
const Extension* extension,
std::list<SharedModuleInfo::ImportInfo>* missing_modules,
std::list<SharedModuleInfo::ImportInfo>* outdated_modules);
// Checks an extension's shared module imports to see if they are satisfied.
// If they are not, this function adds the dependencies to the pending install
// list if |extension| came from the webstore.
ImportStatus SatisfyImports(const Extension* extension);
// Returns a set of extensions that import a given extension.
std::unique_ptr<ExtensionSet> GetDependentExtensions(
const Extension* extension);
// InstallGate:
Action ShouldDelay(const Extension* extension,
bool install_immediately) override;
private:
// Uninstall shared modules which are not used by other extensions.
void PruneSharedModules();
// ExtensionRegistryObserver implementation.
void OnExtensionInstalled(content::BrowserContext* browser_context,
const Extension* extension,
bool is_update) override;
void OnExtensionUninstalled(content::BrowserContext* browser_context,
const Extension* extension,
extensions::UninstallReason reason) override;
ScopedObserver<ExtensionRegistry, ExtensionRegistryObserver>
extension_registry_observer_;
// The context associated with this SharedModuleService.
content::BrowserContext* browser_context_;
DISALLOW_COPY_AND_ASSIGN(SharedModuleService);
};
} // namespace extensions
#endif // CHROME_BROWSER_EXTENSIONS_SHARED_MODULE_SERVICE_H_
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