| // 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 to in the main frame. This covers all cases where |
| // the main frame navigated and a new navigation entry was created. This means |
| // cases like navigations to a hash on the same page are NEW_PAGE, not |
| // IN_PAGE. (Navigation entries created by subframe navigations are |
| // NEW_SUBFRAME.) |
| NAVIGATION_TYPE_NEW_PAGE, |
| |
| // Renavigating to an existing navigation entry. This is the case for history |
| // navigation, reloads, and location.replace(). |
| 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, |
| |
| // 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_ |