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<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW - AX: AXObjectCache should try to use an unignored accessibilityObject when posting a selection notification when on the border between two accessibilityObjects"
href="https://bugs.webkit.org/show_bug.cgi?id=146177">146177</a>
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<th>Summary</th>
<td>AX: AXObjectCache should try to use an unignored accessibilityObject when posting a selection notification when on the border between two accessibilityObjects
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<th>Classification</th>
<td>Unclassified
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<th>Product</th>
<td>WebKit
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<th>Version</th>
<td>528+ (Nightly build)
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<th>Hardware</th>
<td>Unspecified
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<th>OS</th>
<td>Unspecified
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<th>Status</th>
<td>NEW
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<th>Severity</th>
<td>Normal
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<th>Priority</th>
<td>P2
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<th>Component</th>
<td>Accessibility
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<th>Assignee</th>
<td>webkit-unassigned@lists.webkit.org
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<th>Reporter</th>
<td>d_russell@apple.com
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<th>CC</th>
<td>webkit-bug-importer@group.apple.com
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<pre>When
1. AXObjectCache is asked to post a notification that selection state has changed
2. the selection is a caret
3. the selection is on a boundary between two accessibilityObjects and one of them is ignored
it is possible for AXObjectCache to try to resolve an observableObject() and end up with NULL because that element is ignored and won't have a useful tree.
This can be observed when tabbing between two links with a space in between them and observing that the accessibilityObject is the static text in between the links, not the second link.
The concrete fallout of this bug is difficulty correctly echoing links when tabbing between them.
This should be resolved by checking if the object is on a boundary and if the object on the other side of the boundary isn't ignored and using that instead.</pre>
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