Libraries.Interface.Accessibility

Accessibility is a class designed to encapsulate accessibility concepts across all operating systems, inside of the graphics and user interface system. Accessibility systems are not the same everywhere, including on Windows (UIA), Mac (NSAccessibility), or the web, and as such each platform or operating environment must implement its own Accessibility sub-class.

This action indicates that an item should be explicitly added to the accessibility system.

This action indicates that a button has been activated, which can be done either through a click, use of the enter key, or really any other mechanism allowable in the implementation.

This action compares two object hash codes and returns an integer. The result is larger if this hash code is larger than the object passed as a parameter, smaller, or equal. In this case, -1 means smaller, 0 means equal, and 1 means larger. This action was changed in Quorum 7 to return an integer, instead of a CompareResult object, because the previous implementation was causing efficiency issues.

Example Code

Object o
        Object t
        integer result = o:Compare(t) //1 (larger), 0 (equal), or -1 (smaller)

This action indicates that a control was activated and this notifies the accessibility system.

This action indicates that an item had its description changed.

This action determines if two objects are equal based on their hash code values.

Example Code

use Libraries.Language.Object
        use Libraries.Language.Types.Text
        Object o
        Text t
        boolean result = o:Equals(t)

This action indicates that the focus changed. Generally, implementing this is a minimum bar for almost any kind of meaningful accessibility interaction.

This action gets the hash code for an object.

Example Code

Object o
        integer hash = o:GetHashCode()

This action hypothetically tells us whether a screen reader is being used. In almost all implementations, whether this works is hit and miss. Some accessibility systems, at the operating system level, claim to report this but do not do so correctly. Other systems explicitly do not allow querying for this information (e.g., the web). In any case, if this implementation returns false, it means either there is no screen reader or the system does not allow querying.

This action indicates a menu was changed and the accessibility system should be informed.

This action indicates that an item had its name changed.

This action indicates to make a statement from the accessibility system. Not all accessibility systems support such events and in our experience, even if they do, whether they work is inconsistent. We urge caution in relying in production on these actions.

This action indicates to make a statement from the accessibility system. Not all accessibility systems support such events and in our experience, even if they do, whether they work is inconsistent. We urge caution in relying in production on these actions.

This action indicates that a progress bar has had its value changed.

This action indicates that an item should be explicitly removed from the accessibility system.

This action indicates that the selection has changed for a particular item.

Accessibility may require custom setup for each platform. This action is called during StartGame, before a window is created.

The Shutdown action shuts down the underlying accessibility architecture.

This action indicates that a component that involves text had a change in its value. This is used in multiple components, including text fields and text boxes.

This action indicates that a text field in password mode had its value changed.

This action indicates that a toggle button has had its status changed.

This action indicates that a tree was changed and this notifies the accessibility system.

This action indicates that a tree table was changed and this notifies the accessibility system.

In some implementations, this triggers a focus change event.

This action indicates that there was a change in the window focus. Broadly, this occurs when there is a pop-up box, dialog, or something similar.