Class Translator

java.lang.Object

javax.accessibility.AccessibleContext

com.sun.java.accessibility.util.Translator

All Implemented Interfaces:: Accessible, AccessibleComponent

public class Translator extends AccessibleContext implements Accessible, AccessibleComponent

The Translator class provides a translation to interface Accessible for objects that do not implement interface Accessible. Assistive technologies can use the getAccessible class method of Translator to obtain an object that implements interface Accessible. If the object passed in already implements interface Accessible, getAccessible merely returns the object.

An example of how an assistive technology might use the Translator class is as follows:

   Accessible accessible = Translator.getAccessible(someObj);
   // obtain information from the 'accessible' object.

Note: This implementation is missing many things and is not a recommended way to implement accessibility features for a toolkit. Instead of relying upon this code, a toolkit's components should implement interface Accessible directly.

Field Summary

Modifier and Type	Field	Description
`protected Object`	`source`	The source object needing translating.

Fields declared in class AccessibleContext

ACCESSIBLE_ACTION_PROPERTY, ACCESSIBLE_ACTIVE_DESCENDANT_PROPERTY, ACCESSIBLE_CARET_PROPERTY, ACCESSIBLE_CHILD_PROPERTY, ACCESSIBLE_COMPONENT_BOUNDS_CHANGED, ACCESSIBLE_DESCRIPTION_PROPERTY, ACCESSIBLE_HYPERTEXT_OFFSET, ACCESSIBLE_INVALIDATE_CHILDREN, ACCESSIBLE_NAME_PROPERTY, ACCESSIBLE_SELECTION_PROPERTY, ACCESSIBLE_STATE_PROPERTY, ACCESSIBLE_TABLE_CAPTION_CHANGED, ACCESSIBLE_TABLE_COLUMN_DESCRIPTION_CHANGED, ACCESSIBLE_TABLE_COLUMN_HEADER_CHANGED, ACCESSIBLE_TABLE_MODEL_CHANGED, ACCESSIBLE_TABLE_ROW_DESCRIPTION_CHANGED, ACCESSIBLE_TABLE_ROW_HEADER_CHANGED, ACCESSIBLE_TABLE_SUMMARY_CHANGED, ACCESSIBLE_TEXT_ATTRIBUTES_CHANGED, ACCESSIBLE_TEXT_PROPERTY, ACCESSIBLE_VALUE_PROPERTY, ACCESSIBLE_VISIBLE_DATA_PROPERTY, accessibleDescription, accessibleName, accessibleParent

Modifier and Type	Field	Description
`static final String`	`ACCESSIBLE_ACTION_PROPERTY`	Constant used to indicate that the supported set of actions has changed.
`static final String`	`ACCESSIBLE_ACTIVE_DESCENDANT_PROPERTY`	Constant used to determine when the active descendant of a component has changed.
`static final String`	`ACCESSIBLE_CARET_PROPERTY`	Constant used to determine when the `accessibleText` caret has changed.
`static final String`	`ACCESSIBLE_CHILD_PROPERTY`	Constant used to determine when `Accessible` children are added/removed from the object.
`static final String`	`ACCESSIBLE_COMPONENT_BOUNDS_CHANGED`	`PropertyChangeEvent` which indicates that a change has occurred in a component's bounds.
`static final String`	`ACCESSIBLE_DESCRIPTION_PROPERTY`	Constant used to determine when the `AccessibleContext.accessibleDescription` property has changed.
`static final String`	`ACCESSIBLE_HYPERTEXT_OFFSET`	Constant used to indicate that a hypertext element has received focus.
`static final String`	`ACCESSIBLE_INVALIDATE_CHILDREN`	`PropertyChangeEvent` which indicates that a significant change has occurred to the children of a component like a tree or text.
`static final String`	`ACCESSIBLE_NAME_PROPERTY`	Constant used to determine when the `AccessibleContext.accessibleName` property has changed.
`static final String`	`ACCESSIBLE_SELECTION_PROPERTY`	Constant used to determine when the `accessibleSelection` has changed.
`static final String`	`ACCESSIBLE_STATE_PROPERTY`	Constant used to determine when the `accessibleStateSet` property has changed.
`static final String`	`ACCESSIBLE_TABLE_CAPTION_CHANGED`	Constant used to indicate that the table caption has changed.
`static final String`	`ACCESSIBLE_TABLE_COLUMN_DESCRIPTION_CHANGED`	Constant used to indicate that the column description has changed.
`static final String`	`ACCESSIBLE_TABLE_COLUMN_HEADER_CHANGED`	Constant used to indicate that the column header has changed.
`static final String`	`ACCESSIBLE_TABLE_MODEL_CHANGED`	Constant used to indicate that table data has changed.
`static final String`	`ACCESSIBLE_TABLE_ROW_DESCRIPTION_CHANGED`	Constant used to indicate that the row description has changed.
`static final String`	`ACCESSIBLE_TABLE_ROW_HEADER_CHANGED`	Constant used to indicate that the row header has changed.
`static final String`	`ACCESSIBLE_TABLE_SUMMARY_CHANGED`	Constant used to indicate that the table summary has changed.
`static final String`	`ACCESSIBLE_TEXT_ATTRIBUTES_CHANGED`	`PropertyChangeEvent` which indicates that text attributes have changed.
`static final String`	`ACCESSIBLE_TEXT_PROPERTY`	`PropertyChangeEvent` which indicates that text has changed.
`static final String`	`ACCESSIBLE_VALUE_PROPERTY`	Constant used to determine when the `accessibleValue` property has changed.
`static final String`	`ACCESSIBLE_VISIBLE_DATA_PROPERTY`	Constant used to determine when the visual appearance of the object has changed.
`protected String`	`accessibleDescription`	A localized String containing the description of the object.
`protected String`	`accessibleName`	A localized String containing the name of the object.
`protected Accessible`	`accessibleParent`	The accessible parent of this object.

Constructor Summary

Constructor	Description
`Translator()`	Create a new `Translator`.
`Translator(Object o)`	Create a new `Translator` with the source object o.

Method Summary

Modifier and Type	Method	Description
`void`	`addFocusListener(FocusListener l)`	Adds the specified `FocusListener` to receive focus events from this component.
`void`	`addPropertyChangeListener(PropertyChangeListener l)`	Add a `PropertyChangeListener` to the listener list.
`boolean`	`contains(Point p)`	Checks whether the specified `Point` is within this object's bounds, where the `Point` is relative to the coordinate system of the object.
`boolean`	`equals(Object o)`	Returns true if this object is the same as the one passed in.
`static Accessible`	`getAccessible(Object o)`	Obtain an object that implements interface `Accessible`.
`Accessible`	`getAccessibleAt(Point p)`	Returns the accessible child contained at the local coordinate Point, if one exists.
`Accessible`	`getAccessibleChild(int i)`	Return the nth accessible child of the object.
`int`	`getAccessibleChildrenCount()`	Returns the number of accessible children in the object.
`AccessibleContext`	`getAccessibleContext()`	Returns this object.
`String`	`getAccessibleDescription()`	Get the accessible description of this object.
`int`	`getAccessibleIndexInParent()`	Get the index of this object in its accessible parent.
`String`	`getAccessibleName()`	Get the accessible name of this object.
`Accessible`	`getAccessibleParent()`	Get the accessible parent of this object.
`AccessibleRole`	`getAccessibleRole()`	Get the role of this object.
`AccessibleStateSet`	`getAccessibleStateSet()`	Get the state of this object, given an already populated state.
`Color`	`getBackground()`	Get the background `Color` of this object.
`Rectangle`	`getBounds()`	Returns the current bounds of this object.
`Cursor`	`getCursor()`	Get the `Cursor` of this object.
`Font`	`getFont()`	Get the `Font` of this object.
`FontMetrics`	`getFontMetrics(Font f)`	Get the `FontMetrics` of this object.
`Color`	`getForeground()`	Get the foreground `Color` of this object.
`Locale`	`getLocale()`	Gets the `Locale` of the component.
`Point`	`getLocation()`	Returns the location of the object relative to parent.
`Point`	`getLocationOnScreen()`	Returns the location of the object on the screen.
`Dimension`	`getSize()`	Returns the current size of this object.
`Object`	`getSource()`	Get the source `Object` of the `Translator`.
`protected static Class<?>`	`getTranslatorClass(Class<?> c)`	Find a translator for this class.
`int`	`hashCode()`	Return hashcode.
`boolean`	`isEnabled()`	Determine if the object is enabled.
`boolean`	`isFocusTraversable()`	Returns whether this object can accept focus or not.
`boolean`	`isShowing()`	Determine if the object is showing.
`boolean`	`isVisible()`	Determine if the object is visible.
`void`	`removeFocusListener(FocusListener l)`	Removes the specified focus listener so it no longer receives focus events from this component.
`void`	`removePropertyChangeListener(PropertyChangeListener l)`	Remove the `PropertyChangeListener` from the listener list.
`void`	`requestFocus()`	Requests focus for this object.
`void`	`setAccessibleDescription(String s)`	Set the accessible description of this object.
`void`	`setAccessibleName(String s)`	Set the name of this object.
`void`	`setBackground(Color c)`	Set the background `Color` of this object.
`void`	`setBounds(Rectangle r)`	Sets the current bounds of this object.
`void`	`setCursor(Cursor c)`	Set the `Cursor` of this object.
`void`	`setEnabled(boolean b)`	Set the enabled state of the object.
`void`	`setFont(Font f)`	Set the `Font` of this object.
`void`	`setForeground(Color c)`	Set the foreground `Color` of this object.
`void`	`setLocation(Point p)`	Sets the location of the object relative to parent.
`void`	`setSize(Dimension d)`	Sets the current size of this object.
`void`	`setSource(Object o)`	Set the source object of the `Translator`.
`void`	`setVisible(boolean b)`	Set the visible state of the object.

Methods declared in class AccessibleContext

firePropertyChange, getAccessibleAction, getAccessibleComponent, getAccessibleEditableText, getAccessibleIcon, getAccessibleRelationSet, getAccessibleSelection, getAccessibleTable, getAccessibleText, getAccessibleValue, setAccessibleParent

Modifier and Type	Method	Description
`void`	`firePropertyChange(String propertyName, Object oldValue, Object newValue)`	Support for reporting bound property changes.
`AccessibleAction`	`getAccessibleAction()`	Gets the `AccessibleAction` associated with this object that supports one or more actions.
`AccessibleComponent`	`getAccessibleComponent()`	Gets the `AccessibleComponent` associated with this object that has a graphical representation.
`AccessibleEditableText`	`getAccessibleEditableText()`	Gets the `AccessibleEditableText` associated with this object presenting editable text on the display.
`AccessibleIcon[]`	`getAccessibleIcon()`	Gets the `AccessibleIcons` associated with an object that has one or more associated icons.
`AccessibleRelationSet`	`getAccessibleRelationSet()`	Gets the `AccessibleRelationSet` associated with an object.
`AccessibleSelection`	`getAccessibleSelection()`	Gets the `AccessibleSelection` associated with this object which allows its `Accessible` children to be selected.
`AccessibleTable`	`getAccessibleTable()`	Gets the `AccessibleTable` associated with an object.
`AccessibleText`	`getAccessibleText()`	Gets the `AccessibleText` associated with this object presenting text on the display.
`AccessibleValue`	`getAccessibleValue()`	Gets the `AccessibleValue` associated with this object that supports a `Numerical` value.
`void`	`setAccessibleParent(Accessible a)`	Sets the `Accessible` parent of this object.

Methods declared in class Object

clone, finalize, getClass, notify, notifyAll, toString, wait, wait, wait

Modifier and Type	Method	Description
`protected Object`	`clone()`	Creates and returns a copy of this object.
`protected void`	`finalize()`	Deprecated, for removal: This API element is subject to removal in a future version. Finalization is deprecated and subject to removal in a future release.
`final Class<?>`	`getClass()`	Returns the runtime class of this `Object`.
`final void`	`notify()`	Wakes up a single thread that is waiting on this object's monitor.
`final void`	`notifyAll()`	Wakes up all threads that are waiting on this object's monitor.
`String`	`toString()`	Returns a string representation of the object.
`final void`	`wait()`	Causes the current thread to wait until it is awakened, typically by being notified or interrupted.
`final void`	`wait(long timeoutMillis)`	Causes the current thread to wait until it is awakened, typically by being notified or interrupted, or until a certain amount of real time has elapsed.
`final void`	`wait(long timeoutMillis, int nanos)`	Causes the current thread to wait until it is awakened, typically by being notified or interrupted, or until a certain amount of real time has elapsed.

Field Details

source

protected Object source

The source object needing translating.

Constructor Details

Translator

public Translator()

Create a new Translator. You must call the setSource method to set the object to be translated after calling this constructor.

Translator

public Translator(Object o)

Create a new Translator with the source object o.

Parameters:: o - the Component that does not implement interface Accessible

Method Details

getTranslatorClass

protected static Class<?> getTranslatorClass(Class<?> c)

Find a translator for this class. If one doesn't exist for this class explicitly, try its superclass and so on.

Parameters:: c - a Class
Returns:: the Translator Class for the Class passed in

getAccessible

public static Accessible getAccessible(Object o)

Obtain an object that implements interface Accessible. If the object passed in already implements interface Accessible, getAccessible merely returns the object.

Parameters:: o - an Object; if a null is passed in a null is returned
Returns:: an Object, possibly the Object passed in, that implements the Accessible interface for the Object which was passed in

getSource

public Object getSource()

Get the source Object of the Translator.

Returns:: the source Object of the Translator

setSource

public void setSource(Object o)

Set the source object of the Translator.

Parameters:: o - the Component that does not implement interface Accessible

equals

public boolean equals(Object o)

Returns true if this object is the same as the one passed in.

Overrides:

equals in class Object

Parameters:

o - the Object to check against

Returns:

true if this is the same object

See Also:

hashCode

public int hashCode()

Return hashcode.

Overrides:

hashCode in class Object

Returns:

hashcode

See Also:

getAccessibleContext

public AccessibleContext getAccessibleContext()

Returns this object.

Specified by:: getAccessibleContext in interface Accessible
Returns:: the AccessibleContext associated with this object

getAccessibleName

public String getAccessibleName()

Get the accessible name of this object.

Overrides:

getAccessibleName in class AccessibleContext

Returns:

the localized name of the object; can be null if this object does not have a name

See Also:

setAccessibleName

public void setAccessibleName(String s)

Set the name of this object.

Overrides:

setAccessibleName in class AccessibleContext

Parameters:

s - the new localized name of the object

See Also:

getAccessibleDescription

public String getAccessibleDescription()

Get the accessible description of this object.

Overrides:

getAccessibleDescription in class AccessibleContext

Returns:

the description of the object; can be null if this object does not have a description

See Also:

setAccessibleDescription

public void setAccessibleDescription(String s)

Set the accessible description of this object.

Overrides:

setAccessibleDescription in class AccessibleContext

Parameters:

s - the new localized description of the object

See Also:

getAccessibleRole

public AccessibleRole getAccessibleRole()

Get the role of this object.

Specified by:

getAccessibleRole in class AccessibleContext

Returns:

an instance of AccessibleRole describing the role of the object

See Also:

getAccessibleStateSet

public AccessibleStateSet getAccessibleStateSet()

Get the state of this object, given an already populated state. This method is intended for use by subclasses so they don't have to check for everything.

Specified by:

getAccessibleStateSet in class AccessibleContext

Returns:

an instance of AccessibleStateSet containing the current state of the object

See Also:

getAccessibleParent

public Accessible getAccessibleParent()

Get the accessible parent of this object.

Overrides:: getAccessibleParent in class AccessibleContext
Returns:: the accessible parent of this object; can be null if this object does not have an accessible parent

getAccessibleIndexInParent

public int getAccessibleIndexInParent()

Get the index of this object in its accessible parent.

Specified by:

getAccessibleIndexInParent in class AccessibleContext

Returns:

-1 of this object does not have an accessible parent; otherwise, the index of the child in its accessible parent

See Also:

getAccessibleChildrenCount

public int getAccessibleChildrenCount()

Returns the number of accessible children in the object.

Specified by:: getAccessibleChildrenCount in class AccessibleContext
Returns:: the number of accessible children in the object

getAccessibleChild

public Accessible getAccessibleChild(int i)

Return the nth accessible child of the object.

Specified by:

getAccessibleChild in class AccessibleContext

Parameters:

i - zero-based index of child

Returns:

the nth accessible child of the object

See Also:

getLocale

public Locale getLocale() throws IllegalComponentStateException

Gets the Locale of the component. If the component does not have a locale, the locale of its parent is returned.

Specified by:: getLocale in class AccessibleContext
Returns:: the Locale of the object
Throws:: IllegalComponentStateException - If the component does not have its own locale and has not yet been added to a containment hierarchy such that the locale can be determined from the containing parent

addPropertyChangeListener

public void addPropertyChangeListener(PropertyChangeListener l)

Add a PropertyChangeListener to the listener list. The listener is registered for all properties.

Overrides:

addPropertyChangeListener in class AccessibleContext

Parameters:

l - The PropertyChangeListener to be added

See Also:

removePropertyChangeListener

public void removePropertyChangeListener(PropertyChangeListener l)

Remove the PropertyChangeListener from the listener list.

Overrides:: removePropertyChangeListener in class AccessibleContext
Parameters:: l - The PropertyChangeListener to be removed

getBackground

public Color getBackground()

Get the background Color of this object.

Specified by:

getBackground in interface AccessibleComponent

Returns:

if supported, the background Color of the object; otherwise, null

See Also:

setBackground

public void setBackground(Color c)

Set the background Color of this object.

Specified by:

setBackground in interface AccessibleComponent

Parameters:

c - the new Color for the background

See Also:

getForeground

public Color getForeground()

Get the foreground Color of this object.

Specified by:

getForeground in interface AccessibleComponent

Returns:

if supported, the foreground Color of the object; otherwise, null

See Also:

setForeground

public void setForeground(Color c)

Set the foreground Color of this object.

Specified by:

setForeground in interface AccessibleComponent

Parameters:

c - the new Color for the foreground

See Also:

getCursor

public Cursor getCursor()

Get the Cursor of this object.

Specified by:

getCursor in interface AccessibleComponent

Returns:

if supported, the Cursor of the object; otherwise, null

See Also:

setCursor

public void setCursor(Cursor c)

Set the Cursor of this object.

Specified by:

setCursor in interface AccessibleComponent

Parameters:

c - the new Cursor for the object

See Also:

getFont

public Font getFont()

Get the Font of this object.

Specified by:

getFont in interface AccessibleComponent

Returns:

if supported, the Font for the object; otherwise, null

See Also:

setFont

public void setFont(Font f)

Set the Font of this object.

Specified by:

setFont in interface AccessibleComponent

Parameters:

f - the new Font for the object

See Also:

getFontMetrics

public FontMetrics getFontMetrics(Font f)

Get the FontMetrics of this object.

Specified by:

getFontMetrics in interface AccessibleComponent

Parameters:

f - the Font

Returns:

if supported, the FontMetrics the object; otherwise, null

See Also:

isEnabled

public boolean isEnabled()

Determine if the object is enabled.

Specified by:

isEnabled in interface AccessibleComponent

Returns:

true if object is enabled; otherwise, false

See Also:

setEnabled

public void setEnabled(boolean b)

Set the enabled state of the object.

Specified by:

setEnabled in interface AccessibleComponent

Parameters:

b - if true, enables this object; otherwise, disables it

See Also:

isVisible

public boolean isVisible()

Determine if the object is visible.

Specified by:

isVisible in interface AccessibleComponent

Returns:

true if object is visible; otherwise, false

See Also:

setVisible

public void setVisible(boolean b)

Set the visible state of the object.

Specified by:

setVisible in interface AccessibleComponent

Parameters:

b - if true, shows this object; otherwise, hides it

See Also:

isShowing

public boolean isShowing()

Determine if the object is showing. This is determined by checking the visibility of the object and ancestors of the object.

Specified by:: isShowing in interface AccessibleComponent
Returns:: true if object is showing; otherwise, false

contains

public boolean contains(Point p)

Checks whether the specified Point is within this object's bounds, where the Point is relative to the coordinate system of the object.

Specified by:

contains in interface AccessibleComponent

Parameters:

p - the Point relative to the coordinate system of the object

Returns:

true if object contains Point; otherwise false

See Also:

getLocationOnScreen

public Point getLocationOnScreen()

Returns the location of the object on the screen.

Specified by:

getLocationOnScreen in interface AccessibleComponent

Returns:

location of object on screen; can be null if this object is not on the screen

See Also:

getLocation

public Point getLocation()

Returns the location of the object relative to parent.

Specified by:

getLocation in interface AccessibleComponent

Returns:

location of object relative to parent; can be null if this object or its parent are not on the screen

See Also:

setLocation

public void setLocation(Point p)

Sets the location of the object relative to parent.

Specified by:

setLocation in interface AccessibleComponent

Parameters:

p - the new position for the top-left corner

See Also:

getBounds

public Rectangle getBounds()

Returns the current bounds of this object.

Specified by:

getBounds in interface AccessibleComponent

Returns:

current bounds of object; can be null if this object is not on the screen

See Also:

setBounds

public void setBounds(Rectangle r)

Sets the current bounds of this object.

Specified by:

setBounds in interface AccessibleComponent

Parameters:

r - rectangle indicating this component's bounds

See Also:

getSize

public Dimension getSize()

Returns the current size of this object.

Specified by:

getSize in interface AccessibleComponent

Returns:

current size of object; can be null if this object is not on the screen

See Also:

setSize

public void setSize(Dimension d)

Sets the current size of this object.

Specified by:

setSize in interface AccessibleComponent

Parameters:

d - The dimension specifying the new size of the object

See Also:

getAccessibleAt

public Accessible getAccessibleAt(Point p)

Returns the accessible child contained at the local coordinate Point, if one exists.

Specified by:: getAccessibleAt in interface AccessibleComponent
Parameters:: p - The point relative to the coordinate system of this object
Returns:: the Accessible at the specified location, if it exists

isFocusTraversable

public boolean isFocusTraversable()

Returns whether this object can accept focus or not.

Specified by:

isFocusTraversable in interface AccessibleComponent

Returns:

true if object can accept focus; otherwise false

See Also:

requestFocus

public void requestFocus()

Requests focus for this object.

Specified by:

requestFocus in interface AccessibleComponent

See Also:

addFocusListener

public void addFocusListener(FocusListener l)

Adds the specified FocusListener to receive focus events from this component.

Specified by:

addFocusListener in interface AccessibleComponent

Parameters:

l - the focus listener

See Also:

removeFocusListener

public void removeFocusListener(FocusListener l)

Removes the specified focus listener so it no longer receives focus events from this component.

Specified by:

removeFocusListener in interface AccessibleComponent

Parameters:

l - the focus listener; this method performs no function, nor does it throw an exception if the listener specified was not previously added to this component; if listener is null, no exception is thrown and no action is performed.

See Also:

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