If direct editing mode is supported for a textual
label, enter the mode when the user clicks the SELECT button on
the label or when the user double-clicks the SELECT button, if (single)
clicking the SELECT button is already used for some other purpose
(for example, margin selection).
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If direct editing mode is supported for a textual
label, provide some means for keyboard users to edit the label as
well (for example, by choosing an action from a menu that displays
a window in which such labels can be edited via a text-entry field).
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Use a persistent selection to select the entire
text of the label when entering direct editing mode.
Exiting from Direct Editing Mode
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Exit from direct editing mode when the user presses
Enter or keypadEnter.
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Exit from direct editing mode and undo any changes
made to the text being edited when the user presses Cancel.
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When the user exits from direct editing mode, deselect
the text in the label.
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When the user exits from direct editing mode without
explicitly moving focus elsewhere, and the focus remains in the
window or is moved back to it, place the active cursor as follows:
If a static text control is being
directly edited, place the active cursor on it.
If the label being directly edited is associated
with all or part of another element (for example, an icon) that
can be cursored with an element cursor, move the active cursor to
that element.
If the label being directly edited is a group heading,
navigate to the group.
If none of the previous statements apply, the active
cursor should return to where it was before entering direct editing
mode.
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During direct editing, mouse buttons have their
usual effect, and all operations on other controls except those
that transfer data to the label cause direct editing mode to exit.
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During direct editing, keyboard-based window navigation
should exit from direct editing mode and move focus to the window
indicated.
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During direct editing, control navigation should
not be supported.
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During direct editing, tab-group navigation should
exit from direct editing mode and allow navigation elsewhere, but
only in the following cases:
When a static text control is being
directly edited, tab group navigation should allow navigation in
the same way as when the control ordinarily has focus.
If the label being directly edited is associated
with all or part of another element (for example, an icon) that
can be cursored with an element cursor, tab navigation should tab
away from that element.
If the label being directly edited is a group heading,
allow tab navigation to tab away from the group.