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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.
#include "chrome/browser/extensions/tab_capability_tracker.h"
#include "chrome/browser/chrome_notification_types.h"
#include "chrome/browser/extensions/extension_service.h"
#include "chrome/browser/extensions/extension_system.h"
#include "chrome/browser/profiles/profile.h"
#include "chrome/browser/sessions/session_id.h"
#include "chrome/common/extensions/extension.h"
#include "chrome/common/extensions/extension_messages.h"
#include "chrome/common/extensions/permissions/permission_set.h"
#include "chrome/common/extensions/permissions/permissions_data.h"
#include "content/public/browser/navigation_details.h"
#include "content/public/browser/navigation_entry.h"
#include "content/public/browser/notification_service.h"
#include "content/public/browser/notification_source.h"
#include "content/public/browser/render_process_host.h"
#include "content/public/browser/web_contents.h"
#include "extensions/common/user_script.h"
using content::RenderProcessHost;
using content::WebContentsObserver;
namespace extensions {
TabCapabilityTracker::TabCapabilityTracker(
content::WebContents* web_contents, Profile* profile)
: WebContentsObserver(web_contents) {
registrar_.Add(this,
chrome::NOTIFICATION_EXTENSION_UNLOADED,
content::Source<Profile>(profile));
}
TabCapabilityTracker::~TabCapabilityTracker() {}
void TabCapabilityTracker::Grant(const Extension* extension) {
if (granted_extensions_.Contains(extension->id()))
return;
FOR_EACH_OBSERVER(Observer, observers_, OnGranted(extension));
granted_extensions_.Insert(extension);
}
void TabCapabilityTracker::AddObserver(Observer* observer) {
observers_.AddObserver(observer);
}
void TabCapabilityTracker::RemoveObserver(Observer* observer) {
observers_.RemoveObserver(observer);
}
void TabCapabilityTracker::DidNavigateMainFrame(
const content::LoadCommittedDetails& details,
const content::FrameNavigateParams& params) {
if (details.is_in_page)
return;
DCHECK(details.is_main_frame); // important: sub-frames don't get granted!
ClearActiveExtensionsAndNotify();
}
void TabCapabilityTracker::WebContentsDestroyed(
content::WebContents* web_contents) {
ClearActiveExtensionsAndNotify();
}
void TabCapabilityTracker::Observe(
int type,
const content::NotificationSource& source,
const content::NotificationDetails& details) {
DCHECK_EQ(type, chrome::NOTIFICATION_EXTENSION_UNLOADED);
const Extension* extension =
content::Details<UnloadedExtensionInfo>(details)->extension;
// Note: don't need to tell anybody about this because it's being unloaded
// anyway, and all state should go away. Callers should track the unload
// state themselves if they care.
granted_extensions_.Remove(extension->id());
}
void TabCapabilityTracker::ClearActiveExtensionsAndNotify() {
if (granted_extensions_.is_empty())
return;
FOR_EACH_OBSERVER(Observer, observers_, OnRevoked(&granted_extensions_));
granted_extensions_.Clear();
}
} // namespace extensions
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