chrome/test/data/prerender/prerender_visibility_hidden_quick.html - Issue 7736003: Revert 98539

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Issue 7736003: Revert 98539 (Closed) Base URL: svn://svn.chromium.org/chrome/trunk/src/

Patch Set: Created 9 years, 3 months ago

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1 <html>

2 <!--

3 This test checks the visibility API when a prerendered page is visited without

4 being displayed, before the page has finished loading.

5 -->

6 <head>

7 <title>Prerender Visibility Hidden Quick Switch</title>

8

9 <script>

10 // Checks visibility state while the page is still loading.

11 var lastState = document.webkitVisibilityState;

12 var loadingStatePassed = document.webkitHidden && lastState != 'visible';

13 var unexpectedStateChange = false;

14

15 function onVisibilityChange(event) {

16 if (lastState == 'hidden' \|\|

17 document.webkitVisibilityState != 'hidden') {

18 unexpectedStateChange = true;

19 return;

20 }

21 lastState = document.webkitVisibilityState;

22 }

23

24 document.addEventListener('webkitvisibilitychange',

25 onVisibilityChange,

26 false);

27

28 // Checks that either the first visibility state was 'prerender' and there

29 // was one and only one visibility change event to 'hidden', or visibility

30 // was always 'hidden'.

31 function DidDisplayPass() {

32 return loadingStatePassed &&

33 !unexpectedStateChange &&

34 'hidden' == document.webkitVisibilityState &&

35 document.webkitHidden;

36 }

37 </script>

38

39 </head>

40 <body></body>

41 </html>

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