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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_GUEST_VIEW_GUEST_VIEW_MANAGER_H_
#define CHROME_BROWSER_GUEST_VIEW_GUEST_VIEW_MANAGER_H_
#include <map>
#include "base/gtest_prod_util.h"
#include "base/lazy_instance.h"
#include "base/macros.h"
#include "content/public/browser/browser_plugin_guest_manager.h"
#include "content/public/browser/site_instance.h"
#include "content/public/browser/web_contents.h"
class GuestViewBase;
class GuestWebContentsObserver;
class GURL;
namespace content {
class BrowserContext;
} // namespace content
class GuestViewManager : public content::BrowserPluginGuestManager,
public base::SupportsUserData::Data {
public:
explicit GuestViewManager(content::BrowserContext* context);
virtual ~GuestViewManager();
static GuestViewManager* FromBrowserContext(content::BrowserContext* context);
// Returns the guest WebContents associated with the given |guest_instance_id|
// if the provided |embedder_render_process_id| is allowed to access it.
// If the embedder is not allowed access, the embedder will be killed, and
// this method will return NULL. If no WebContents exists with the given
// instance ID, then NULL will also be returned.
content::WebContents* GetGuestByInstanceIDSafely(
int guest_instance_id,
int embedder_render_process_id);
// BrowserPluginGuestManager implementation.
virtual content::WebContents* CreateGuest(
content::SiteInstance* embedder_site_instance,
int instance_id,
scoped_ptr<base::DictionaryValue> extra_params) OVERRIDE;
virtual int GetNextInstanceID() OVERRIDE;
virtual void MaybeGetGuestByInstanceIDOrKill(
int guest_instance_id,
int embedder_render_process_id,
const GuestByInstanceIDCallback& callback) OVERRIDE;
virtual bool ForEachGuest(content::WebContents* embedder_web_contents,
const GuestCallback& callback) OVERRIDE;
private:
friend class GuestViewBase;
friend class GuestWebContentsObserver;
friend class TestGuestViewManager;
FRIEND_TEST_ALL_PREFIXES(GuestViewManagerTest, AddRemove);
void AddGuest(int guest_instance_id,
content::WebContents* guest_web_contents);
void RemoveGuest(int guest_instance_id);
content::SiteInstance* GetGuestSiteInstance(
const GURL& guest_site);
content::WebContents* GetGuestByInstanceID(
int guest_instance_id,
int embedder_render_process_id);
bool CanEmbedderAccessInstanceIDMaybeKill(
int embedder_render_process_id,
int guest_instance_id);
bool CanEmbedderAccessInstanceID(int embedder_render_process_id,
int guest_instance_id);
// Returns true if |guest_instance_id| can be used to add a new guest to this
// manager.
// We disallow adding new guest with instance IDs that were previously removed
// from this manager using RemoveGuest.
bool CanUseGuestInstanceID(int guest_instance_id);
static bool CanEmbedderAccessGuest(int embedder_render_process_id,
GuestViewBase* guest);
// Contains guests' WebContents, mapping from their instance ids.
typedef std::map<int, content::WebContents*> GuestInstanceMap;
GuestInstanceMap guest_web_contents_by_instance_id_;
int current_instance_id_;
// Any instance ID whose number not greater than this was removed via
// RemoveGuest.
// This is used so that we don't have store all removed instance IDs in
// |removed_instance_ids_|.
int last_instance_id_removed_;
// The remaining instance IDs that are greater than
// |last_instance_id_removed_| are kept here.
std::set<int> removed_instance_ids_;
content::BrowserContext* context_;
DISALLOW_COPY_AND_ASSIGN(GuestViewManager);
};
#endif // CHROME_BROWSER_GUEST_VIEW_GUEST_VIEW_MANAGER_H_
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