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1 // Copyright (c) 2012 The Chromium Authors. All rights reserved. | |
2 // Use of this source code is governed by a BSD-style license that can be | |
3 // found in the LICENSE file. | |
4 | |
5 #ifndef CONTENT_PUBLIC_BROWSER_NAVIGATION_TYPE_H_ | |
6 #define CONTENT_PUBLIC_BROWSER_NAVIGATION_TYPE_H_ | |
7 | |
8 namespace content { | |
9 | |
10 // Indicates different types of navigations that can occur that we will handle | |
11 // separately. | |
12 enum NavigationType { | |
13 // Unknown type. | |
14 NAVIGATION_TYPE_UNKNOWN, | |
15 | |
16 // A new page was navigated to in the main frame. This covers all cases where | |
17 // the main frame navigated and a new navigation entry was created. This means | |
18 // cases like navigations to a hash on the same page are NEW_PAGE, not | |
19 // IN_PAGE. (Navigation entries created by subframe navigations are | |
20 // NEW_SUBFRAME.) | |
21 NAVIGATION_TYPE_NEW_PAGE, | |
22 | |
23 // Renavigating to an existing navigation entry. This is the case for history | |
24 // navigation, reloads, and location.replace(). | |
25 NAVIGATION_TYPE_EXISTING_PAGE, | |
26 | |
27 // The same page has been reloaded as a result of the user requesting | |
28 // navigation to that same page (like pressing Enter in the URL bar). This | |
29 // is not the same as an in-page navigation because we'll actually have a | |
30 // pending entry for the load, which is then meaningless. | |
31 NAVIGATION_TYPE_SAME_PAGE, | |
32 | |
33 // A new subframe was manually navigated by the user. We will create a new | |
34 // NavigationEntry so they can go back to the previous subframe content | |
35 // using the back button. | |
36 NAVIGATION_TYPE_NEW_SUBFRAME, | |
37 | |
38 // A subframe in the page was automatically loaded or navigated to such that | |
39 // a new navigation entry should not be created. There are two cases: | |
40 // 1. Stuff like iframes containing ads that the page loads automatically. | |
41 // The user doesn't want to see these, so we just update the existing | |
42 // navigation entry. | |
43 // 2. Going back/forward to previous subframe navigations. We don't create | |
44 // a new entry here either, just update the last committed entry. | |
45 // These two cases are actually pretty different, they just happen to | |
46 // require almost the same code to handle. | |
47 NAVIGATION_TYPE_AUTO_SUBFRAME, | |
48 | |
49 // Nothing happened. This happens when we get information about a page we | |
50 // don't know anything about. It can also happen when an iframe in a popup | |
51 // navigated to about:blank is navigated. Nothing needs to be done. | |
52 NAVIGATION_TYPE_NAV_IGNORE, | |
53 }; | |
54 | |
55 } // namespace content | |
56 | |
57 #endif // CONTENT_PUBLIC_BROWSER_NAVIGATION_TYPE_H_ | |
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