// 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 CONTENT_PUBLIC_BROWSER_NAVIGATION_TYPE_H_
#define CONTENT_PUBLIC_BROWSER_NAVIGATION_TYPE_H_
namespace content {
// Indicates different types of navigations that can occur that we will handle
// separately.
enum NavigationType {
// Unknown type.
NAVIGATION_TYPE_UNKNOWN,
// A new page was navigated in the main frame.
NAVIGATION_TYPE_NEW_PAGE,
// Renavigating to an existing navigation entry. The entry is guaranteed to
// exist in the list, or else it would be a new page or IGNORE navigation.
NAVIGATION_TYPE_EXISTING_PAGE,
// The same page has been reloaded as a result of the user requesting
// navigation to that same page (like pressing Enter in the URL bar). This
// is not the same as an in-page navigation because we'll actually have a
// pending entry for the load, which is then meaningless.
NAVIGATION_TYPE_SAME_PAGE,
// In page navigations are when the reference fragment changes. This will
// be in the main frame only (we won't even get notified of in-page
// subframe navigations). It may be for any page, not necessarily the last
// committed one (for example, whey going back to a page with a ref).
NAVIGATION_TYPE_IN_PAGE,
// A new subframe was manually navigated by the user. We will create a new
// NavigationEntry so they can go back to the previous subframe content
// using the back button.
NAVIGATION_TYPE_NEW_SUBFRAME,
// A subframe in the page was automatically loaded or navigated to such that
// a new navigation entry should not be created. There are two cases:
// 1. Stuff like iframes containing ads that the page loads automatically.
// The user doesn't want to see these, so we just update the existing
// navigation entry.
// 2. Going back/forward to previous subframe navigations. We don't create
// a new entry here either, just update the last committed entry.
// These two cases are actually pretty different, they just happen to
// require almost the same code to handle.
NAVIGATION_TYPE_AUTO_SUBFRAME,
// Nothing happened. This happens when we get information about a page we
// don't know anything about. It can also happen when an iframe in a popup
// navigated to about:blank is navigated. Nothing needs to be done.
NAVIGATION_TYPE_NAV_IGNORE,
};
} // namespace content
#endif // CONTENT_PUBLIC_BROWSER_NAVIGATION_TYPE_H_