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java.awt

Class Checkbox.AccessibleAWTCheckbox

Enclosing Class:
Checkbox
Implemented Interfaces:
AccessibleAction, AccessibleComponent, AccessibleValue, EventListener, ItemListener, Serializable
protected class Checkbox.AccessibleAWTCheckbox
extends Component.AccessibleAWTComponent
implements ItemListener, AccessibleAction, AccessibleValue
This class provides accessibility support for the checkbox.
See Also:
Serialized Form

Nested Class Summary

Nested classes/interfaces inherited from class java.awt.Component.AccessibleAWTComponent

Component.AccessibleAWTComponent.AccessibleAWTComponentHandler, Component.AccessibleAWTComponent.AccessibleAWTFocusHandler

Field Summary

Fields inherited from class java.awt.Component.AccessibleAWTComponent

accessibleAWTComponentHandler, accessibleAWTFocusHandler

Fields inherited from class javax.accessibility.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

Fields inherited from interface javax.accessibility.AccessibleAction

CLICK, DECREMENT, INCREMENT, TOGGLE_EXPAND, TOGGLE_POPUP

Constructor Summary

AccessibleAWTCheckbox()
Default constructor which simply calls the super class for generic component accessibility handling.

Method Summary

boolean
doAccessibleAction(int i)
Executes the action with the specified id.
AccessibleAction
getAccessibleAction()
Returns an implementation of the AccessibleAction interface for this accessible object.
int
getAccessibleActionCount()
Returns the number of actions associated with this accessible object.
String
getAccessibleActionDescription(int i)
Returns a description of the action with the supplied id.
AccessibleRole
getAccessibleRole()
Returns the role of this accessible object.
AccessibleStateSet
getAccessibleStateSet()
Returns the state set of this accessible object.
AccessibleValue
getAccessibleValue()
Returns an implementation of the AccessibleValue interface for this accessible object.
Number
getCurrentAccessibleValue()
Returns the current value of this accessible object.
Number
getMaximumAccessibleValue()
Returns the maximum acceptable accessible value used by this object, or null if no maximum value exists.
Number
getMinimumAccessibleValue()
Returns the minimum acceptable accessible value used by this object, or null if no minimum value exists.
void
itemStateChanged(ItemEvent event)
Captures changes to the state of the checkbox and fires appropriate accessible property change events.
boolean
setCurrentAccessibleValue(Number number)
Sets the current value of this accessible object to that supplied.

Methods inherited from class java.awt.Component.AccessibleAWTComponent

addFocusListener, addPropertyChangeListener, contains, getAccessibleAt, getAccessibleChild, getAccessibleChildrenCount, getAccessibleComponent, getAccessibleDescription, getAccessibleIndexInParent, getAccessibleName, getAccessibleParent, getAccessibleRole, getAccessibleStateSet, getBackground, getBounds, getCursor, getFont, getFontMetrics, getForeground, getLocale, getLocation, getLocationOnScreen, getSize, isEnabled, isFocusTraversable, isShowing, isVisible, removeFocusListener, removePropertyChangeListener, requestFocus, setBackground, setBounds, setCursor, setEnabled, setFont, setForeground, setLocation, setSize, setVisible

Methods inherited from class javax.accessibility.AccessibleContext

addPropertyChangeListener, firePropertyChange, getAccessibleAction, getAccessibleChild, getAccessibleChildrenCount, getAccessibleComponent, getAccessibleDescription, getAccessibleEditableText, getAccessibleIcon, getAccessibleIndexInParent, getAccessibleName, getAccessibleParent, getAccessibleRelationSet, getAccessibleRole, getAccessibleSelection, getAccessibleStateSet, getAccessibleTable, getAccessibleText, getAccessibleValue, getLocale, removePropertyChangeListener, setAccessibleDescription, setAccessibleName, setAccessibleParent

Methods inherited from class java.lang.Object

clone, equals, extends Object> getClass, finalize, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Details

AccessibleAWTCheckbox

public AccessibleAWTCheckbox()
Default constructor which simply calls the super class for generic component accessibility handling.

Method Details

doAccessibleAction

public boolean doAccessibleAction(int i)
Executes the action with the specified id. This default implementation simply returns false.
Specified by:
doAccessibleAction in interface AccessibleAction
Parameters:
i - the id of the action to perform.
Returns:
true if the action was performed.
See Also:
AccessibleAction.doAccessibleAction(int)

getAccessibleAction

public AccessibleAction getAccessibleAction()
Returns an implementation of the AccessibleAction interface for this accessible object. In this case, the current instance is simply returned (with a more appropriate type), as it also implements the accessible action as well as the context.
Overrides:
getAccessibleAction in interface AccessibleContext
Returns:
the accessible action associated with this context.
See Also:
AccessibleAction

getAccessibleActionCount

public int getAccessibleActionCount()
Returns the number of actions associated with this accessible object. This default implementation returns 0.
Specified by:
getAccessibleActionCount in interface AccessibleAction
Returns:
the number of accessible actions available.
See Also:
AccessibleAction.getAccessibleActionCount()

getAccessibleActionDescription

public String getAccessibleActionDescription(int i)
Returns a description of the action with the supplied id. This default implementation always returns null.
Specified by:
getAccessibleActionDescription in interface AccessibleAction
Parameters:
i - the id of the action whose description should be retrieved.
Returns:
a String describing the action.
See Also:
AccessibleAction.getAccessibleActionDescription(int)

getAccessibleRole

public AccessibleRole getAccessibleRole()
Returns the role of this accessible object.
Overrides:
getAccessibleRole in interface Component.AccessibleAWTComponent
Returns:
the instance of AccessibleRole, which describes this object.
See Also:
AccessibleRole

getAccessibleStateSet

public AccessibleStateSet getAccessibleStateSet()
Returns the state set of this accessible object.
Overrides:
getAccessibleStateSet in interface Component.AccessibleAWTComponent
Returns:
a set of AccessibleStates which represent the current state of the accessible object.
See Also:
AccessibleState, AccessibleStateSet

getAccessibleValue

public AccessibleValue getAccessibleValue()
Returns an implementation of the AccessibleValue interface for this accessible object. In this case, the current instance is simply returned (with a more appropriate type), as it also implements the accessible value as well as the context.
Overrides:
getAccessibleValue in interface AccessibleContext
Returns:
the accessible value associated with this context.
See Also:
AccessibleValue

getCurrentAccessibleValue

public Number getCurrentAccessibleValue()
Returns the current value of this accessible object. If no value has been set, null is returned. This default implementation always returns null, regardless.
Specified by:
getCurrentAccessibleValue in interface AccessibleValue
Returns:
the numeric value of this object, or null if no value has been set.
See Also:
AccessibleValue.getCurrentAccessibleValue()

getMaximumAccessibleValue

public Number getMaximumAccessibleValue()
Returns the maximum acceptable accessible value used by this object, or null if no maximum value exists. This default implementation always returns null.
Specified by:
getMaximumAccessibleValue in interface AccessibleValue
Returns:
the maximum acceptable accessible value, or null if there is no maximum.
See Also:
AccessibleValue.getMaximumAccessibleValue()

getMinimumAccessibleValue

public Number getMinimumAccessibleValue()
Returns the minimum acceptable accessible value used by this object, or null if no minimum value exists. This default implementation always returns null.
Specified by:
getMinimumAccessibleValue in interface AccessibleValue
Returns:
the minimum acceptable accessible value, or null if there is no minimum.
See Also:
AccessibleValue.getMinimumAccessibleValue()

itemStateChanged

public void itemStateChanged(ItemEvent event)
Captures changes to the state of the checkbox and fires appropriate accessible property change events.
Specified by:
itemStateChanged in interface ItemListener
Parameters:
event - the event fired.
See Also:
ItemListener.itemStateChanged(ItemEvent)

setCurrentAccessibleValue

public boolean setCurrentAccessibleValue(Number number)
Sets the current value of this accessible object to that supplied. In this default implementation, the value is never set and the method always returns false.
Specified by:
setCurrentAccessibleValue in interface AccessibleValue
Parameters:
number - the new accessible value.
Returns:
true if the value was set.
See Also:
AccessibleValue.setCurrentAccessibleValue(Number)
Checkbox.java -- An AWT checkbox widget Copyright (C) 1999, 2000, 2001, 2002, 2005, 2006 Free Software Foundation, Inc. This file is part of GNU Classpath. GNU Classpath is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation; either version 2, or (at your option) any later version. GNU Classpath is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. You should have received a copy of the GNU General Public License along with GNU Classpath; see the file COPYING. If not, write to the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. Linking this library statically or dynamically with other modules is making a combined work based on this library. Thus, the terms and conditions of the GNU General Public License cover the whole combination. As a special exception, the copyright holders of this library give you permission to link this library with independent modules to produce an executable, regardless of the license terms of these independent modules, and to copy and distribute the resulting executable under terms of your choice, provided that you also meet, for each linked independent module, the terms and conditions of the license of that module. An independent module is a module which is not derived from or based on this library. If you modify this library, you may extend this exception to your version of the library, but you are not obligated to do so. If you do not wish to do so, delete this exception statement from your version.

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