|
|||||||||
PREV CLASS NEXT CLASS | FRAMES NO FRAMES | ||||||||
SUMMARY: NESTED | FIELD | CONSTR | METHOD | DETAIL: FIELD | CONSTR | METHOD |
java.lang.Objectorg.eclipse.swt.accessibility.Accessible
public class Accessible
Instances of this class provide a bridge between application
code and assistive technology clients. Many platforms provide
default accessible behavior for most widgets, and this class
allows that default behavior to be overridden. Applications
can get the default Accessible object for a control by sending
it getAccessible
, and then add an accessible listener
to override simple items like the name and help string, or they
can add an accessible control listener to override complex items.
As a rule of thumb, an application would only want to use the
accessible control listener to implement accessibility for a
custom control.
Control.getAccessible()
,
AccessibleListener
,
AccessibleEvent
,
AccessibleControlListener
,
AccessibleControlEvent
,
Accessibility snippets,
Sample code and further informationMethod Summary | |
---|---|
void |
addAccessibleControlListener(AccessibleControlListener listener)
Adds the listener to the collection of listeners who will be notified when an accessible client asks for custom control specific information. |
void |
addAccessibleListener(AccessibleListener listener)
Adds the listener to the collection of listeners who will be notified when an accessible client asks for certain strings, such as name, description, help, or keyboard shortcut. |
void |
addAccessibleTextListener(AccessibleTextListener listener)
Adds the listener to the collection of listeners who will be notified when an accessible client asks for custom text control specific information. |
Control |
getControl()
Returns the control for this Accessible object. |
static Accessible |
internal_new_Accessible(Control control)
Invokes platform specific functionality to allocate a new accessible object. |
void |
removeAccessibleControlListener(AccessibleControlListener listener)
Removes the listener from the collection of listeners who will be notified when an accessible client asks for custom control specific information. |
void |
removeAccessibleListener(AccessibleListener listener)
Removes the listener from the collection of listeners who will be notified when an accessible client asks for certain strings, such as name, description, help, or keyboard shortcut. |
void |
removeAccessibleTextListener(AccessibleTextListener listener)
Removes the listener from the collection of listeners who will be notified when an accessible client asks for custom text control specific information. |
void |
selectionChanged()
Sends a message to accessible clients that the child selection within a custom container control has changed. |
void |
setFocus(int childID)
Sends a message to accessible clients indicating that the focus has changed within a custom control. |
void |
textCaretMoved(int index)
Sends a message to accessible clients that the text caret has moved within a custom control. |
void |
textChanged(int type,
int startIndex,
int length)
Sends a message to accessible clients that the text within a custom control has changed. |
void |
textSelectionChanged()
Sends a message to accessible clients that the text selection has changed within a custom control. |
Methods inherited from class java.lang.Object |
---|
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait |
Method Detail |
---|
public void addAccessibleListener(AccessibleListener listener)
AccessibleListener
interface.
listener
- the listener that should be notified when the receiver
is asked for a name, description, help, or keyboard shortcut string
java.lang.IllegalArgumentException
- SWTException
- AccessibleListener
,
removeAccessibleListener(org.eclipse.swt.accessibility.AccessibleListener)
public void addAccessibleControlListener(AccessibleControlListener listener)
AccessibleControlListener
interface.
listener
- the listener that should be notified when the receiver
is asked for custom control specific information
java.lang.IllegalArgumentException
- SWTException
- AccessibleControlListener
,
removeAccessibleControlListener(org.eclipse.swt.accessibility.AccessibleControlListener)
public void addAccessibleTextListener(AccessibleTextListener listener)
AccessibleTextListener
interface.
listener
- the listener that should be notified when the receiver
is asked for custom text control specific information
java.lang.IllegalArgumentException
- SWTException
- AccessibleTextListener
,
removeAccessibleTextListener(org.eclipse.swt.accessibility.AccessibleTextListener)
public Control getControl()
public static Accessible internal_new_Accessible(Control control)
IMPORTANT: This method is not part of the public
API for Accessible
. It is marked public only so that it
can be shared within the packages provided by SWT. It is not
available on all platforms, and should never be called from
application code.
control
- the control to get the accessible object for
public void removeAccessibleControlListener(AccessibleControlListener listener)
listener
- the listener that should no longer be notified when the receiver
is asked for custom control specific information
java.lang.IllegalArgumentException
- SWTException
- AccessibleControlListener
,
addAccessibleControlListener(org.eclipse.swt.accessibility.AccessibleControlListener)
public void removeAccessibleListener(AccessibleListener listener)
listener
- the listener that should no longer be notified when the receiver
is asked for a name, description, help, or keyboard shortcut string
java.lang.IllegalArgumentException
- SWTException
- AccessibleListener
,
addAccessibleListener(org.eclipse.swt.accessibility.AccessibleListener)
public void removeAccessibleTextListener(AccessibleTextListener listener)
listener
- the listener that should no longer be notified when the receiver
is asked for custom text control specific information
java.lang.IllegalArgumentException
- SWTException
- AccessibleTextListener
,
addAccessibleTextListener(org.eclipse.swt.accessibility.AccessibleTextListener)
public void selectionChanged()
SWTException
- public void setFocus(int childID)
childID
- an identifier specifying a child of the control
SWTException
- public void textCaretMoved(int index)
index
- the new caret index within the control
SWTException
- public void textChanged(int type, int startIndex, int length)
type
- the type of change, one of ACC.NOTIFY_TEXT_INSERT
or ACC.NOTIFY_TEXT_DELETE
startIndex
- the text index within the control where the insertion or deletion beginslength
- the non-negative length in characters of the insertion or deletion
SWTException
- ACC.TEXT_INSERT
,
ACC.TEXT_DELETE
public void textSelectionChanged()
SWTException
-
|
|||||||||
PREV CLASS NEXT CLASS | FRAMES NO FRAMES | ||||||||
SUMMARY: NESTED | FIELD | CONSTR | METHOD | DETAIL: FIELD | CONSTR | METHOD |