1 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
2 // Use of this source code is governed by a BSD-style license that can be
3 // found in the LICENSE file.
5 #ifndef CHROME_BROWSER_EXTENSIONS_ACTIVE_TAB_PERMISSION_GRANTER_H_
6 #define CHROME_BROWSER_EXTENSIONS_ACTIVE_TAB_PERMISSION_GRANTER_H_
11 #include "base/scoped_observer.h"
12 #include "content/public/browser/web_contents_observer.h"
13 #include "extensions/browser/extension_registry_observer.h"
14 #include "extensions/common/extension_set.h"
15 #include "extensions/common/url_pattern_set.h"
23 namespace extensions {
26 class ExtensionRegistry;
28 // Responsible for granting and revoking tab-specific permissions to extensions
29 // with the activeTab or tabCapture permission.
30 class ActiveTabPermissionGranter
31 : public content::WebContentsObserver,
32 public extensions::ExtensionRegistryObserver {
34 ActiveTabPermissionGranter(content::WebContents* web_contents,
37 virtual ~ActiveTabPermissionGranter();
39 // If |extension| has the activeTab or tabCapture permission, grants
40 // tab-specific permissions to it until the next page navigation or refresh.
41 void GrantIfRequested(const Extension* extension);
44 // content::WebContentsObserver implementation.
45 virtual void DidNavigateMainFrame(
46 const content::LoadCommittedDetails& details,
47 const content::FrameNavigateParams& params) OVERRIDE;
48 virtual void WebContentsDestroyed() OVERRIDE;
50 // extensions::ExtensionRegistryObserver implementation.
51 virtual void OnExtensionUnloaded(content::BrowserContext* browser_context,
52 const Extension* extension,
53 UnloadedExtensionInfo::Reason reason)
56 // Clears any tab-specific permissions for all extensions on |tab_id_| and
57 // notifies renderers.
58 void ClearActiveExtensionsAndNotify();
60 // The tab ID for this tab.
63 // Extensions with the activeTab permission that have been granted
64 // tab-specific permissions until the next navigation/refresh.
65 ExtensionSet granted_extensions_;
67 // Listen to extension unloaded notifications.
68 ScopedObserver<ExtensionRegistry, ExtensionRegistryObserver>
69 extension_registry_observer_;
71 DISALLOW_COPY_AND_ASSIGN(ActiveTabPermissionGranter);
74 } // namespace extensions
76 #endif // CHROME_BROWSER_EXTENSIONS_ACTIVE_TAB_PERMISSION_GRANTER_H_