blob: 0b804119c0d5ea0644e3ad2436b68e9ede6d8fa8 [file] [log] [blame]
// Copyright 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 <string>
#include "base/memory/ref_counted.h"
#include "base/memory/scoped_ptr.h"
#include "chrome/browser/autocomplete/autocomplete_match.h"
#include "content/public/browser/notification_observer.h"
#include "content/public/browser/notification_registrar.h"
#include "content/public/browser/web_contents_observer.h"
#include "net/url_request/url_fetcher_delegate.h"
class ShortcutsBackend;
namespace net {
class URLFetcher;
class URLRequestStatus;
// Monitors omnibox navigations in order to trigger behaviors that depend on
// successful navigations.
// Currently two such behaviors exist:
// (1) For single-word queries where we can't tell if the entry was a search or
// an intranet hostname, the omnibox opens as a search by default, but this
// class attempts to open as a URL via an HTTP HEAD request. If successful,
// displays an infobar once the search result has also loaded. See
// AlternateNavInfoBarDelegate.
// (2) Omnibox navigations that complete successfully are added to the
// Shortcuts backend.
// TODO(pkasting): Probably NOTIFICATION_OMNIBOX_OPENED_URL should disappear and
// everyone who listened to it should be triggered from this class instead.
// The memory management of this object is a bit tricky. The OmniboxEditModel
// will create us and be responsible for us until we attach as an observer
// after a pending load starts (it will delete us if this doesn't happen).
// Once this pending load starts, we're responsible for deleting ourselves.
class OmniboxNavigationObserver : public content::NotificationObserver,
public content::WebContentsObserver,
public net::URLFetcherDelegate {
enum LoadState {
OmniboxNavigationObserver(Profile* profile,
const base::string16& text,
const AutocompleteMatch& match,
const AutocompleteMatch& alternate_nav_match);
virtual ~OmniboxNavigationObserver();
LoadState load_state() const { return load_state_; }
// Called directly by OmniboxEditModel when an extension-related navigation
// occurs. Such navigations don't trigger an immediate NAV_ENTRY_PENDING and
// must be handled separately.
void OnSuccessfulNavigation();
enum FetchState {
// content::NotificationObserver:
virtual void Observe(int type,
const content::NotificationSource& source,
const content::NotificationDetails& details) OVERRIDE;
// content::WebContentsObserver:
virtual void DidStartNavigationToPendingEntry(
const GURL& url,
content::NavigationController::ReloadType reload_type) OVERRIDE;
virtual void NavigationEntryCommitted(
const content::LoadCommittedDetails& load_details) OVERRIDE;
virtual void WebContentsDestroyed() OVERRIDE;
// net::URLFetcherDelegate:
virtual void OnURLFetchComplete(const net::URLFetcher* source) OVERRIDE;
// Once the load has committed and any URL fetch has completed, this displays
// the alternate nav infobar if necessary, and deletes |this|.
void OnAllLoadingFinished();
const base::string16 text_;
const AutocompleteMatch match_;
const AutocompleteMatch alternate_nav_match_;
scoped_refptr<ShortcutsBackend> shortcuts_backend_; // NULL in incognito.
scoped_ptr<net::URLFetcher> fetcher_;
LoadState load_state_;
FetchState fetch_state_;
content::NotificationRegistrar registrar_;