AbstractButton.AccessibleAbstractButton (Java Platform SE 6) - JDK 5 Documentation v6.0, Java 2 SDK 英文文档

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Java™ Platform
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javax.swing
Class AbstractButton.AccessibleAbstractButton

java.lang.Object
  javax.accessibility.AccessibleContext
      java.awt.Component.AccessibleAWTComponent
          java.awt.Container.AccessibleAWTContainer
              javax.swing.JComponent.AccessibleJComponent
                  javax.swing.AbstractButton.AccessibleAbstractButton

All Implemented Interfaces:: Serializable, AccessibleAction, AccessibleComponent, AccessibleExtendedComponent, AccessibleText, AccessibleValue

Direct Known Subclasses:: JButton.AccessibleJButton, JMenuItem.AccessibleJMenuItem, JToggleButton.AccessibleJToggleButton

Enclosing class:: AbstractButton

protected abstract class AbstractButton.AccessibleAbstractButton
extends JComponent.AccessibleJComponent
implements AccessibleAction, AccessibleValue, AccessibleText, AccessibleExtendedComponent
extends JComponent.AccessibleJComponent
implements AccessibleAction, AccessibleValue, AccessibleText, AccessibleExtendedComponent

This class implements accessibility support for the AbstractButton class. It provides an implementation of the Java Accessibility API appropriate to button and menu item user-interface elements.

Warning: Serialized objects of this class will not be compatible with future Swing releases. The current serialization support is appropriate for short term storage or RMI between applications running the same version of Swing. As of 1.4, support for long term storage of all JavaBeans^TM has been added to the java.beans package. Please see XMLEncoder.

Since:: 1.4

Nested classes/interfaces inherited from class javax.swing.JComponent.AccessibleJComponent
`JComponent.AccessibleJComponent.AccessibleContainerHandler, JComponent.AccessibleJComponent.AccessibleFocusHandler`

Nested classes/interfaces inherited from class java.awt.Component.AccessibleAWTComponent
`Component.AccessibleAWTComponent.AccessibleAWTComponentHandler, Component.AccessibleAWTComponent.AccessibleAWTFocusHandler`

Fields inherited from class javax.swing.JComponent.AccessibleJComponent
`accessibleContainerHandler, accessibleFocusHandler`

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`

Fields inherited from interface javax.accessibility.AccessibleText
`CHARACTER, SENTENCE, WORD`

Constructor Summary
`protected`	`AbstractButton.AccessibleAbstractButton()`

Method Summary
`boolean`	`doAccessibleAction(int i)` Perform the specified Action on the object
`AccessibleAction`	`getAccessibleAction()` Get the AccessibleAction associated with this object.
`int`	`getAccessibleActionCount()` Returns the number of Actions available in this object.
`String`	`getAccessibleActionDescription(int i)` Return a description of the specified action of the object.
`AccessibleIcon[]`	`getAccessibleIcon()` Get the AccessibleIcons associated with this object if one or more exist.
`AccessibleKeyBinding`	`getAccessibleKeyBinding()` Returns key bindings associated with this object
`String`	`getAccessibleName()` Returns the accessible name of this object.
`AccessibleRelationSet`	`getAccessibleRelationSet()` Get the AccessibleRelationSet associated with this object if one exists.
`AccessibleStateSet`	`getAccessibleStateSet()` Get the state set of this object.
`AccessibleText`	`getAccessibleText()` Gets the AccessibleText associated with this object presenting text on the display.
`AccessibleValue`	`getAccessibleValue()` Get the AccessibleValue associated with this object.
`String`	`getAfterIndex(int part, int index)` Returns the String after a given index.
`String`	`getAtIndex(int part, int index)` Returns the String at a given index.
`String`	`getBeforeIndex(int part, int index)` Returns the String before a given index.
`int`	`getCaretPosition()` Return the zero-based offset of the caret.
`AttributeSet`	`getCharacterAttribute(int i)` Return the AttributeSet for a given character at a given index
`Rectangle`	`getCharacterBounds(int i)` Determine the bounding box of the character at the given index into the string.
`int`	`getCharCount()` Return the number of characters (valid indicies)
`Number`	`getCurrentAccessibleValue()` Get the value of this object as a Number.
`int`	`getIndexAtPoint(Point p)` Given a point in local coordinates, return the zero-based index of the character under that Point.
`Number`	`getMaximumAccessibleValue()` Get the maximum value of this object as a Number.
`Number`	`getMinimumAccessibleValue()` Get the minimum value of this object as a Number.
`String`	`getSelectedText()` Returns the portion of the text that is selected.
`int`	`getSelectionEnd()` Returns the end offset within the selected text.
`int`	`getSelectionStart()` Returns the start offset within the selected text.
`String`	`getTitledBorderText()` Returns the titled border text
`String`	`getToolTipText()` Returns the tool tip text
`boolean`	`setCurrentAccessibleValue(Number n)` Set the value of this object as a Number.

Methods inherited from class javax.swing.JComponent.AccessibleJComponent
`addPropertyChangeListener, getAccessibleChild, getAccessibleChildrenCount, getAccessibleDescription, getAccessibleRole, getBorderTitle, removePropertyChangeListener`

Methods inherited from class java.awt.Container.AccessibleAWTContainer
`getAccessibleAt`

Methods inherited from class java.awt.Component.AccessibleAWTComponent
`addFocusListener, contains, getAccessibleComponent, getAccessibleIndexInParent, getAccessibleParent, getBackground, getBounds, getCursor, getFont, getFontMetrics, getForeground, getLocale, getLocation, getLocationOnScreen, getSize, isEnabled, isFocusTraversable, isShowing, isVisible, removeFocusListener, requestFocus, setBackground, setBounds, setCursor, setEnabled, setFont, setForeground, setLocation, setSize, setVisible`

Methods inherited from class javax.accessibility.AccessibleContext
`firePropertyChange, getAccessibleEditableText, getAccessibleSelection, getAccessibleTable, setAccessibleDescription, setAccessibleName, setAccessibleParent`

Methods inherited from class java.lang.Object
`clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait`

Methods inherited from interface javax.accessibility.AccessibleComponent
`addFocusListener, contains, getAccessibleAt, getBackground, getBounds, getCursor, getFont, getFontMetrics, getForeground, getLocation, getLocationOnScreen, getSize, isEnabled, isFocusTraversable, isShowing, isVisible, removeFocusListener, requestFocus, setBackground, setBounds, setCursor, setEnabled, setFont, setForeground, setLocation, setSize, setVisible`

Constructor Detail

AbstractButton.AccessibleAbstractButton

protected AbstractButton.AccessibleAbstractButton()

Method Detail

getAccessibleName

public String getAccessibleName()

Returns the accessible name of this object.

Overrides:: getAccessibleName in class JComponent.AccessibleJComponent

Returns:: the localized name of the object -- can be null if this object does not have a name
See Also:: AccessibleContext.setAccessibleName(java.lang.String)

getAccessibleIcon

public AccessibleIcon[] getAccessibleIcon()

Get the AccessibleIcons associated with this object if one or more exist. Otherwise return null.

Overrides:: getAccessibleIcon in class AccessibleContext

Returns:: an array of AccessibleIcon if supported by object; otherwise return null
Since:: 1.3
See Also:: AccessibleIcon

getAccessibleStateSet

public AccessibleStateSet getAccessibleStateSet()

Get the state set of this object.

Overrides:: getAccessibleStateSet in class JComponent.AccessibleJComponent

Returns:: an instance of AccessibleState containing the current state of the object
See Also:: AccessibleState

getAccessibleRelationSet

public AccessibleRelationSet getAccessibleRelationSet()

Get the AccessibleRelationSet associated with this object if one exists. Otherwise return null.

Overrides:: getAccessibleRelationSet in class AccessibleContext

Returns:: an AccessibleRelationSet if supported by object; otherwise return null
Since:: 1.3
See Also:: AccessibleRelation

getAccessibleAction

public AccessibleAction getAccessibleAction()

Get the AccessibleAction associated with this object. In the implementation of the Java Accessibility API for this class, return this object, which is responsible for implementing the AccessibleAction interface on behalf of itself.

Overrides:: getAccessibleAction in class AccessibleContext

Returns:: this object
See Also:: AccessibleAction

getAccessibleValue

public AccessibleValue getAccessibleValue()

Get the AccessibleValue associated with this object. In the implementation of the Java Accessibility API for this class, return this object, which is responsible for implementing the AccessibleValue interface on behalf of itself.

Overrides:: getAccessibleValue in class AccessibleContext

Returns:: this object
See Also:: AccessibleValue

getAccessibleActionCount

public int getAccessibleActionCount()

Returns the number of Actions available in this object. The default behavior of a button is to have one action - toggle the button.

Specified by:: getAccessibleActionCount in interface AccessibleAction

Returns:: 1, the number of Actions in this object

getAccessibleActionDescription

public String getAccessibleActionDescription(int i)

Return a description of the specified action of the object.

Specified by:: getAccessibleActionDescription in interface AccessibleAction

Parameters:: i - zero-based index of the actions
Returns:: a String description of the action
See Also:: AccessibleAction.getAccessibleActionCount()

doAccessibleAction

public boolean doAccessibleAction(int i)

Perform the specified Action on the object

Specified by:: doAccessibleAction in interface AccessibleAction

Parameters:: i - zero-based index of actions
Returns:: true if the the action was performed; else false.
See Also:: AccessibleAction.getAccessibleActionCount()

getCurrentAccessibleValue

public Number getCurrentAccessibleValue()

Get the value of this object as a Number.

Specified by:: getCurrentAccessibleValue in interface AccessibleValue

Returns:: An Integer of 0 if this isn't selected or an Integer of 1 if this is selected.
See Also:: AbstractButton.isSelected()

setCurrentAccessibleValue

public boolean setCurrentAccessibleValue(Number n)

Set the value of this object as a Number.

Specified by:: setCurrentAccessibleValue in interface AccessibleValue

Returns:: True if the value was set.
See Also:: AccessibleValue.getCurrentAccessibleValue()

getMinimumAccessibleValue

public Number getMinimumAccessibleValue()

Get the minimum value of this object as a Number.

Specified by:: getMinimumAccessibleValue in interface AccessibleValue

Returns:: an Integer of 0.
See Also:: AccessibleValue.getMaximumAccessibleValue()

getMaximumAccessibleValue

public Number getMaximumAccessibleValue()

Get the maximum value of this object as a Number.

Specified by:: getMaximumAccessibleValue in interface AccessibleValue

Returns:: An Integer of 1.
See Also:: AccessibleValue.getMinimumAccessibleValue()

getAccessibleText

public AccessibleText getAccessibleText()

Description copied from class: AccessibleContext

Gets the AccessibleText associated with this object presenting text on the display.

Overrides:: getAccessibleText in class AccessibleContext

Returns:: AccessibleText if supported by object; else return null
See Also:: AccessibleText

getIndexAtPoint

public int getIndexAtPoint(Point p)

Given a point in local coordinates, return the zero-based index of the character under that Point. If the point is invalid, this method returns -1. Note: the AbstractButton must have a valid size (e.g. have been added to a parent container whose ancestor container is a valid top-level window) for this method to be able to return a meaningful value.

Specified by:: getIndexAtPoint in interface AccessibleText

Parameters:: p - the Point in local coordinates
Returns:: the zero-based index of the character under Point p; if Point is invalid returns -1.
Since:: 1.3

getCharacterBounds

public Rectangle getCharacterBounds(int i)

Determine the bounding box of the character at the given index into the string. The bounds are returned in local coordinates. If the index is invalid an empty rectangle is returned. Note: the AbstractButton must have a valid size (e.g. have been added to a parent container whose ancestor container is a valid top-level window) for this method to be able to return a meaningful value.

Specified by:: getCharacterBounds in interface AccessibleText

Parameters:: i - the index into the String
Returns:: the screen coordinates of the character's the bounding box, if index is invalid returns an empty rectangle.
Since:: 1.3

getCharCount

public int getCharCount()

Return the number of characters (valid indicies)

Specified by:: getCharCount in interface AccessibleText

Returns:: the number of characters
Since:: 1.3

getCaretPosition

public int getCaretPosition()

Return the zero-based offset of the caret. Note: That to the right of the caret will have the same index value as the offset (the caret is between two characters).

Specified by:: getCaretPosition in interface AccessibleText

Returns:: the zero-based offset of the caret.
Since:: 1.3

getAtIndex

public String getAtIndex(int part,
                         int index)

Returns the String at a given index.

Specified by:: getAtIndex in interface AccessibleText

Parameters:: part - the AccessibleText.CHARACTER, AccessibleText.WORD, or AccessibleText.SENTENCE to retrieve; index - an index within the text >= 0
Returns:: the letter, word, or sentence, null for an invalid index or part
Since:: 1.3

getAfterIndex

public String getAfterIndex(int part,
                            int index)

Returns the String after a given index.

Specified by:: getAfterIndex in interface AccessibleText

Parameters:: part - the AccessibleText.CHARACTER, AccessibleText.WORD, or AccessibleText.SENTENCE to retrieve; index - an index within the text >= 0
Returns:: the letter, word, or sentence, null for an invalid index or part
Since:: 1.3

getBeforeIndex

public String getBeforeIndex(int part,
                             int index)

Returns the String before a given index.

Specified by:: getBeforeIndex in interface AccessibleText

Parameters:: part - the AccessibleText.CHARACTER, AccessibleText.WORD, or AccessibleText.SENTENCE to retrieve; index - an index within the text >= 0
Returns:: the letter, word, or sentence, null for an invalid index or part
Since:: 1.3

getCharacterAttribute

public AttributeSet getCharacterAttribute(int i)

Return the AttributeSet for a given character at a given index

Specified by:: getCharacterAttribute in interface AccessibleText

Parameters:: i - the zero-based index into the text
Returns:: the AttributeSet of the character
Since:: 1.3

getSelectionStart

public int getSelectionStart()

Returns the start offset within the selected text. If there is no selection, but there is a caret, the start and end offsets will be the same.

Specified by:: getSelectionStart in interface AccessibleText

Returns:: the index into the text of the start of the selection
Since:: 1.3

getSelectionEnd

public int getSelectionEnd()

Returns the end offset within the selected text. If there is no selection, but there is a caret, the start and end offsets will be the same.

Specified by:: getSelectionEnd in interface AccessibleText

Returns:: the index into teh text of the end of the selection
Since:: 1.3

getSelectedText

public String getSelectedText()

Returns the portion of the text that is selected.

Specified by:: getSelectedText in interface AccessibleText

Returns:: the String portion of the text that is selected
Since:: 1.3

getToolTipText

public String getToolTipText()

Returns the tool tip text

Specified by:: getToolTipText in interface AccessibleExtendedComponent
Overrides:: getToolTipText in class JComponent.AccessibleJComponent

Returns:: the tool tip text, if supported, of the object; otherwise, null
Since:: 1.4

getTitledBorderText

public String getTitledBorderText()

Returns the titled border text

Specified by:: getTitledBorderText in interface AccessibleExtendedComponent
Overrides:: getTitledBorderText in class JComponent.AccessibleJComponent

Returns:: the titled border text, if supported, of the object; otherwise, null
Since:: 1.4

getAccessibleKeyBinding

public AccessibleKeyBinding getAccessibleKeyBinding()

Returns key bindings associated with this object

Specified by:: getAccessibleKeyBinding in interface AccessibleExtendedComponent
Overrides:: getAccessibleKeyBinding in class JComponent.AccessibleJComponent

Returns:: the key bindings, if supported, of the object; otherwise, null
Since:: 1.4
See Also:: AccessibleKeyBinding