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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/navigation_observer.h"
#include "chrome/browser/extensions/extension_install_ui.h"
#include "chrome/browser/extensions/extension_service.h"
#include "chrome/browser/extensions/extension_system.h"
#include "chrome/browser/profiles/profile.h"
#include "content/public/browser/navigation_controller.h"
#include "content/public/browser/navigation_entry.h"
#include "content/public/browser/notification_service.h"
#include "content/public/browser/notification_types.h"
using content::NavigationController;
using content::NavigationEntry;
namespace extensions {
NavigationObserver::NavigationObserver(Profile* profile) : profile_(profile) {
RegisterForNotifications();
}
NavigationObserver::~NavigationObserver() {}
void NavigationObserver::Observe(int type,
const content::NotificationSource& source,
const content::NotificationDetails& details) {
if (type != content::NOTIFICATION_NAV_ENTRY_COMMITTED) {
NOTREACHED();
return;
}
NavigationController* controller =
content::Source<NavigationController>(source).ptr();
if (!profile_->IsSameProfile(
Profile::FromBrowserContext(controller->GetBrowserContext())))
return;
PromptToEnableExtensionIfNecessary(controller);
}
void NavigationObserver::RegisterForNotifications() {
registrar_.Add(this, content::NOTIFICATION_NAV_ENTRY_COMMITTED,
content::NotificationService::AllSources());
}
void NavigationObserver::PromptToEnableExtensionIfNecessary(
NavigationController* nav_controller) {
// Bail out if we're already running a prompt.
if (!in_progress_prompt_extension_id_.empty())
return;
NavigationEntry* nav_entry = nav_controller->GetVisibleEntry();
if (!nav_entry)
return;
ExtensionService* extension_service =
extensions::ExtensionSystem::Get(profile_)->extension_service();
const Extension* extension = extension_service->disabled_extensions()->
GetExtensionOrAppByURL(nav_entry->GetURL());
if (!extension)
return;
// Try not to repeatedly prompt the user about the same extension.
if (prompted_extensions_.find(extension->id()) != prompted_extensions_.end())
return;
prompted_extensions_.insert(extension->id());
ExtensionPrefs* extension_prefs = extension_service->extension_prefs();
if (extension_prefs->DidExtensionEscalatePermissions(extension->id())) {
// Keep track of the extension id and nav controller we're prompting for.
// These must be reset in InstallUIProceed and InstallUIAbort.
in_progress_prompt_extension_id_ = extension->id();
in_progress_prompt_navigation_controller_ = nav_controller;
extension_install_prompt_.reset(
new ExtensionInstallPrompt(nav_controller->GetWebContents()));
extension_install_prompt_->ConfirmReEnable(this, extension);
}
}
void NavigationObserver::InstallUIProceed() {
ExtensionService* extension_service =
extensions::ExtensionSystem::Get(profile_)->extension_service();
const Extension* extension = extension_service->GetExtensionById(
in_progress_prompt_extension_id_, true);
NavigationController* nav_controller =
in_progress_prompt_navigation_controller_;
CHECK(extension);
CHECK(nav_controller);
in_progress_prompt_extension_id_ = "";
in_progress_prompt_navigation_controller_ = NULL;
extension_install_prompt_.reset();
// Grant permissions, re-enable the extension, and then reload the tab.
extension_service->GrantPermissionsAndEnableExtension(extension);
nav_controller->Reload(true);
}
void NavigationObserver::InstallUIAbort(bool user_initiated) {
ExtensionService* extension_service =
extensions::ExtensionSystem::Get(profile_)->extension_service();
const Extension* extension = extension_service->GetExtensionById(
in_progress_prompt_extension_id_, true);
in_progress_prompt_extension_id_ = "";
in_progress_prompt_navigation_controller_ = NULL;
extension_install_prompt_.reset();
std::string histogram_name = user_initiated ?
"Extensions.Permissions_ReEnableCancel" :
"Extensions.Permissions_ReEnableAbort";
ExtensionService::RecordPermissionMessagesHistogram(
extension, histogram_name.c_str());
}
} // namespace extensions
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