| <!DOCTYPE HTML PUBLIC "-//IETF//DTD HTML//EN"> |
| <html> |
| <head> |
| <script src="../resources/accessibility-helper.js"></script> |
| <script src="../resources/js-test.js"></script> |
| </head> |
| <body> |
| |
| <div id="item" role="listitem" tabindex="0" aria-posinset="1" aria-setsize="10">Item 1</div> |
| |
| <script> |
| let output = "This test verifies that a focus notification is delivered even when nothing has " + |
| "queried the accessibility tree before the focus change (e.g. accessibleElementById, " + |
| "rootElement or focusedElement). This matters because some platform implementations only " + |
| "create the AXObjectCache lazily, and a naive implementation may only do so as a side effect " + |
| "of an earlier tree query rather than in response to the focus change itself.\n\n"; |
| |
| if (window.accessibilityController) { |
| window.jsTestIsAsync = true; |
| |
| var sawFocusNotification = false; |
| // Intentionally register the listener without calling accessibleElementById, |
| // rootElement, or focusedElement first, so nothing has forced the platform |
| // accessibility tree/cache into existence yet. |
| accessibilityController.addNotificationListener((axElement, notification) => { |
| if (notification == "AXFocusChanged" || notification == "AXFocusedUIElementChanged") |
| sawFocusNotification = true; |
| }); |
| |
| // A plain DOM focus call, not going through any accessibility API. |
| document.getElementById("item").focus(); |
| |
| setTimeout(async () => { |
| await waitFor(() => sawFocusNotification); |
| output += expect("sawFocusNotification", "true"); |
| if (sawFocusNotification) |
| output += expect("accessibilityController.focusedElement.domIdentifier", "'item'"); |
| |
| document.getElementById("item").style.visibility = "hidden"; |
| accessibilityController.removeNotificationListener(); |
| debug(output); |
| finishJSTest(); |
| }, 0); |
| } else { |
| debug(output); |
| } |
| </script> |
| </body> |
| </html> |
