Class AccessibleTextAdapter
- All Implemented Interfaces:
EventListener
,AccessibleTextListener
,SWTEventListener
- Direct Known Subclasses:
AccessibleTextExtendedAdapter
AccessibleTextListener
interface.
Classes that wish to deal with AccessibleTextEvent
s can
extend this class and override only the methods that they are
interested in.
Note: Accessibility clients use child identifiers to specify whether they want information about a control or one of its children. Child identifiers are increasing integers beginning with 0. The identifier CHILDID_SELF represents the control itself. When returning a child identifier to a client, you may use CHILDID_NONE to indicate that no child or control has the required information.
Note: This adapter is typically used by implementors of a custom control to provide very detailed information about the control instance to accessibility clients.
- Since:
- 3.0
- See Also:
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Constructor Summary
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Method Summary
Modifier and TypeMethodDescriptionvoid
Sent when an accessibility client requests the current character offset of the text caret.void
Sent when an accessibility client requests the range of the current text selection.
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Constructor Details
-
AccessibleTextAdapter
public AccessibleTextAdapter()
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Method Details
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getCaretOffset
Sent when an accessibility client requests the current character offset of the text caret. The default behavior is to do nothing.Return the caret offset in the
offset
field of the event object.- Specified by:
getCaretOffset
in interfaceAccessibleTextListener
- Parameters:
e
- an event object containing the following fields:- childID [IN] - an identifier specifying a child of the control
- offset [OUT] - the current offset of the text caret
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getSelectionRange
Sent when an accessibility client requests the range of the current text selection. The default behavior is to do nothing.Return the selection start offset and non-negative length in the
offset
andlength
fields of the event object.- Specified by:
getSelectionRange
in interfaceAccessibleTextListener
- Parameters:
e
- an event object containing the following fields:- childID [IN] - an identifier specifying a child of the control
- offset [OUT] - the offset of the current text selection
- length [OUT] - the length of the current text selection
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