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|---|
| (Empty) |
| 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> | |
| 42 <html> | |
| 43 <!-- | |
| 44 This test checks the visibility API when a prerendered page is visited without | |
| 45 being displayed, before the page has finished loading. | |
| 46 --> | |
| 47 <head> | |
| 48 <title>Prerender Visibility Hidden Quick Switch</title> | |
| 49 | |
| 50 <script> | |
| 51 // Checks visibility state while the page is still loading. | |
| 52 var lastState = document.webkitVisibilityState; | |
| 53 var loadingStatePassed = document.webkitHidden && lastState != 'visible'; | |
| 54 var unexpectedStateChange = false; | |
| 55 | |
| 56 function onVisibilityChange(event) { | |
| 57 if (lastState == 'hidden' || | |
| 58 document.webkitVisibilityState != 'hidden') { | |
| 59 unexpectedStateChange = true; | |
| 60 return; | |
| 61 } | |
| 62 lastState = document.webkitVisibilityState; | |
| 63 } | |
| 64 | |
| 65 document.addEventListener('webkitvisibilitychange', | |
| 66 onVisibilityChange, | |
| 67 false); | |
| 68 | |
| 69 // Checks that either the first visibility state was 'prerender' and there | |
| 70 // was one and only one visibility change event to 'hidden', or visibility | |
| 71 // was always 'hidden'. | |
| 72 function DidDisplayPass() { | |
| 73 return loadingStatePassed && | |
| 74 !unexpectedStateChange && | |
| 75 'hidden' == document.webkitVisibilityState && | |
| 76 document.webkitHidden; | |
| 77 } | |
| 78 </script> | |
| 79 | |
| 80 </head> | |
| 81 <body></body> | |
| 82 </html> | |
| OLD | NEW |
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Chromium Code Reviews
Issue 8392041:
Prerendered tabs use the same SessionStorage namespace as the tab that triggered the prerender. (Closed)
Base URL: svn://svn.chromium.org/chrome/trunk/src