| <!DOCTYPE HTML PUBLIC "-//IETF//DTD HTML//EN"> |
| <html> |
| <head> |
| <script src="../../resources/js-test-pre.js"></script> |
| </head> |
| <body id="body"> |
| |
| <iframe id="iframe" width=100 height=100></iframe> |
| |
| <p id="description"></p> |
| <div id="console"></div> |
| |
| <script> |
| |
| description("This protects against a crash when a text marker still holds a reference to a node that's been deallocated."); |
| |
| // Add an element that a text marker can be retrieved from. |
| var contentDoc = document.getElementById("iframe").contentDocument; |
| contentDoc.body.innerHTML = "<h1 tabindex='0'>content</h1>"; |
| |
| // Tab to the element. |
| // Note: If the element has an "id" it won't get de-allocated in time, so .focus() can't be used. |
| eventSender.keyDown("\t"); |
| |
| // get a marker that will become invalid when the node disappears. |
| var axDiv = accessibilityController.focusedElement; |
| var textMarkerRange = axDiv.textMarkerRangeForElement(axDiv); |
| var invalidMarker = axDiv.startTextMarkerForTextMarkerRange(textMarkerRange); |
| |
| </script> |
| |
| <script> |
| // Write new content to cause all content to disappear. |
| contentDoc.body.innerHTML = "<h2>new content</h2>"; |
| </script> |
| |
| <script> |
| // Access the invalid marker (it should not crash). |
| document.getElementById("body").focus(); |
| var body = accessibilityController.focusedElement; |
| |
| body.accessibilityElementForTextMarker(invalidMarker); |
| |
| </script> |
| |
| <script src="../../resources/js-test-post.js"></script> |
| </body> |
| </html> |
