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// Copyright (c) 2011 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_PROCESS_MANAGER_H_
#define CHROME_BROWSER_EXTENSIONS_EXTENSION_PROCESS_MANAGER_H_
#pragma once
#include <map>
#include <set>
#include <string>
#include "base/compiler_specific.h"
#include "base/memory/ref_counted.h"
#include "content/common/notification_observer.h"
#include "content/common/notification_registrar.h"
#include "content/common/view_types.h"
class Browser;
class BrowsingInstance;
class Extension;
class ExtensionHost;
class GURL;
class Profile;
class RenderProcessHost;
class SiteInstance;
// Manages dynamic state of running Chromium extensions. There is one instance
// of this class per Profile. OTR Profiles have a separate instance that keeps
// track of split-mode extensions only.
class ExtensionProcessManager : public NotificationObserver {
public:
static ExtensionProcessManager* Create(Profile* profile);
virtual ~ExtensionProcessManager();
// Creates a new ExtensionHost with its associated view, grouping it in the
// appropriate SiteInstance (and therefore process) based on the URL and
// profile.
virtual ExtensionHost* CreateViewHost(const Extension* extension,
const GURL& url,
Browser* browser,
ViewType::Type view_type);
ExtensionHost* CreateViewHost(const GURL& url,
Browser* browser,
ViewType::Type view_type);
ExtensionHost* CreatePopupHost(const Extension* extension,
const GURL& url,
Browser* browser);
ExtensionHost* CreatePopupHost(const GURL& url, Browser* browser);
ExtensionHost* CreateDialogHost(const GURL& url, Browser* browser);
ExtensionHost* CreateInfobarHost(const Extension* extension,
const GURL& url,
Browser* browser);
ExtensionHost* CreateInfobarHost(const GURL& url,
Browser* browser);
// Open the extension's options page.
void OpenOptionsPage(const Extension* extension, Browser* browser);
// Creates a new UI-less extension instance. Like CreateViewHost, but not
// displayed anywhere.
virtual void CreateBackgroundHost(const Extension* extension,
const GURL& url);
// Gets the ExtensionHost for the background page for an extension, or NULL if
// the extension isn't running or doesn't have a background page.
ExtensionHost* GetBackgroundHostForExtension(const Extension* extension);
// Returns the SiteInstance that the given URL belongs to.
virtual SiteInstance* GetSiteInstanceForURL(const GURL& url);
// Registers a SiteInstance with |site_instance_id| as hosting the extension
// with |extension_id|.
void RegisterExtensionSiteInstance(int site_instance_id,
const std::string& extension_id);
// Unregisters the extension associated with |site_instance_id|.
void UnregisterExtensionSiteInstance(int site_instance_id);
// Registers a RenderProcessHost with |host_id| as hosting an extension.
void RegisterProcessHost(int host_id);
// Unregisters the RenderProcessHost with |host_id|.
void UnregisterProcessHost(int host_id);
// True if this process host is hosting an extension.
bool IsExtensionProcessHost(int host_id) const;
// Returns the extension process that |url| is associated with if it exists.
// This is not valid for hosted apps without the background permission, since
// such apps may have multiple processes.
virtual RenderProcessHost* GetExtensionProcess(const GURL& url);
// Returns the process that the extension with the given ID is running in.
RenderProcessHost* GetExtensionProcess(const std::string& extension_id);
// Returns the Extension associated with the given SiteInstance id, if any.
virtual const Extension* GetExtensionForSiteInstance(int site_instance_id);
// Returns true if |host| is managed by this process manager.
bool HasExtensionHost(ExtensionHost* host) const;
typedef std::set<ExtensionHost*> ExtensionHostSet;
typedef ExtensionHostSet::const_iterator const_iterator;
const_iterator begin() const { return all_hosts_.begin(); }
const_iterator end() const { return all_hosts_.end(); }
protected:
explicit ExtensionProcessManager(Profile* profile);
// Called just after |host| is created so it can be registered in our lists.
void OnExtensionHostCreated(ExtensionHost* host, bool is_background);
// Called on browser shutdown to close our extension hosts.
void CloseBackgroundHosts();
// NotificationObserver:
virtual void Observe(int type,
const NotificationSource& source,
const NotificationDetails& details) OVERRIDE;
NotificationRegistrar registrar_;
// The set of all ExtensionHosts managed by this process manager.
ExtensionHostSet all_hosts_;
// The set of running viewless background extensions.
ExtensionHostSet background_hosts_;
// The BrowsingInstance shared by all extensions in this profile. This
// controls process grouping.
scoped_refptr<BrowsingInstance> browsing_instance_;
// A map of site instance ID to the ID of the extension it hosts.
typedef std::map<int, std::string> SiteInstanceIDMap;
SiteInstanceIDMap extension_ids_;
// A set of render process host IDs that have access to extension bindings.
std::set<int> process_ids_;
DISALLOW_COPY_AND_ASSIGN(ExtensionProcessManager);
};
#endif // CHROME_BROWSER_EXTENSIONS_EXTENSION_PROCESS_MANAGER_H_
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