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// Copyright (c) 2012 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_ACTIVE_TAB_PERMISSION_GRANTER_H_
#define CHROME_BROWSER_EXTENSIONS_ACTIVE_TAB_PERMISSION_GRANTER_H_
#include <set>
#include <string>
#include "chrome/common/extensions/extension_set.h"
#include "content/public/browser/notification_observer.h"
#include "content/public/browser/notification_registrar.h"
#include "content/public/browser/web_contents_observer.h"
#include "extensions/common/url_pattern_set.h"
class Profile;
namespace content {
class WebContents;
}
namespace extensions {
class Extension;
// Responsible for granting and revoking tab-specific permissions to extensions
// with the activeTab or tabCapture permission.
class ActiveTabPermissionGranter : public content::WebContentsObserver,
public content::NotificationObserver {
public:
ActiveTabPermissionGranter(content::WebContents* web_contents,
int tab_id,
Profile* profile);
virtual ~ActiveTabPermissionGranter();
// If |extension| has the activeTab or tabCapture permission, grants
// tab-specific permissions to it until the next page navigation or refresh.
void GrantIfRequested(const Extension* extension);
// Returns true if |extension| has been granted tab-specific permissions
// for this tab.
bool IsGranted(const Extension* extension);
private:
// content::WebContentsObserver implementation.
virtual void DidNavigateMainFrame(
const content::LoadCommittedDetails& details,
const content::FrameNavigateParams& params) OVERRIDE;
virtual void WebContentsDestroyed(content::WebContents* web_contents)
OVERRIDE;
// content::NotificationObserver implementation.
virtual void Observe(int type,
const content::NotificationSource& source,
const content::NotificationDetails& details) OVERRIDE;
// Clears any tab-specific permissions for all extensions on |tab_id_| and
// notifies renderers.
void ClearActiveExtensionsAndNotify();
// Gets the current page id.
int32 GetPageID();
// The tab ID for this tab.
int tab_id_;
// Extensions with the activeTab permission that have been granted
// tab-specific permissions until the next navigation/refresh.
ExtensionSet granted_extensions_;
// Listen to extension unloaded notifications.
content::NotificationRegistrar registrar_;
DISALLOW_COPY_AND_ASSIGN(ActiveTabPermissionGranter);
};
} // namespace extensions
#endif // CHROME_BROWSER_EXTENSIONS_ACTIVE_TAB_PERMISSION_GRANTER_H_
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