caret-browsing-disabled.html | Explore in Territory

<!DOCTYPE html>
<html>
<body>
    <p id="p1" aria-label="p1">abcde</p>
    <script>
        const textNode = document.getElementById('p1').childNodes[0];
        var selection = window.getSelection();
        var selectionRange = document.createRange();

        var go_passes = [
            () => {
                // Attempt to place caret within text node. This will fail
                // and not generate a caret moved event if caret browsing is disabled.
                selectionRange.setStart(textNode, 1);
                selectionRange.setEnd(textNode, 1);
                selection.removeAllRanges();
                selection.addRange(selectionRange);
            },
            () => {
                // Change selection, which is possible even if caret
                // browsing is disabled, and fires a caret moved event.
                selectionRange.setEnd(textNode, 3);
            },
        ];

        var current_pass = 0;
        function go() {
            go_passes[current_pass++].call();
            return current_pass < go_passes.length;
        }
    </script>
</body>
</html>

chromium/content/test/data/accessibility/event/caret-browsing-disabled.html