SAK-51312 Gradebook improve GbModalWindow focus management and accessibility #13554
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…ibility Refactored the GbModalWindow component to address several focus management and accessibility issues: - Replaced naive initial focus on the first input element. The modal now defaults to focusing the main content panel itself. Added `setInitialFocusComponent()` method to allow explicitly setting a specific component to receive initial focus. - Implemented robust focus trapping. Tabbing is now confined within the modal boundary (including the header/close button). The trap correctly handles looping from the last to the first element (Tab) and first to last (Shift+Tab). This uses a namespaced event listener attached to the document to reliably capture key events. - Removed the `positionAtTop` functionality and associated JavaScript, allowing the modal to use default browser/Wicket positioning logic.
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Refactored the GbModalWindow component to address several focus management and accessibility issues:
Replaced naive initial focus on the first input element. The modal now defaults to focusing the main content panel itself. Added
setInitialFocusComponent()method to allow explicitly setting a specific component to receive initial focus.Implemented robust focus trapping. Tabbing is now confined within the modal boundary (including the header/close button). The trap correctly handles looping from the last to the first element (Tab) and first to last (Shift+Tab). This uses a namespaced event listener attached to the document to reliably capture key events.
Removed the
positionAtTopfunctionality and associated JavaScript, allowing the modal to use default browser/Wicket positioning logic.