All Implemented Interfaces:

Serializable, EventListener, AccessibleAction, AccessibleComponent, AccessibleEditableText, AccessibleExtendedComponent, AccessibleExtendedText, AccessibleText, CaretListener, DocumentListener

Direct Known Subclasses:

JEditorPane.AccessibleJEditorPane, JTextArea.AccessibleJTextArea, JTextField.AccessibleJTextField

Enclosing class:

JTextComponent

public class JTextComponent.AccessibleJTextComponent
extends JComponent.AccessibleJComponent
implements AccessibleText, CaretListener, DocumentListener, AccessibleAction, AccessibleEditableText, AccessibleExtendedText 

• Nested Class Summary

  • 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

• Field Summary

  • Fields inherited from class javax.swing.JComponent.AccessibleJComponent

    accessibleFocusHandler

  • Fields inherited from class java.awt.Container.AccessibleAWTContainer

    accessibleContainerHandler

  • 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

  • Fields inherited from interface javax.accessibility.AccessibleExtendedText

    ATTRIBUTE_RUN, LINE

• Constructor Summary

  Constructors

  Constructor	Description
  AccessibleJTextComponent ()	Constructs an AccessibleJTextComponent.

• Method Summary

  All Methods

  Modifier and Type	Method	Description
  void	caretUpdate (CaretEvent e)	Handles caret updates (fire appropriate property change event, which are AccessibleContext.ACCESSIBLE_CARET_PROPERTY and AccessibleContext.ACCESSIBLE_SELECTION_PROPERTY).
  void	changedUpdate (DocumentEvent e)	Handles document remove (fire appropriate property change event, which is AccessibleContext.ACCESSIBLE_TEXT_PROPERTY).
  void	cut (int startIndex, int endIndex)	Cuts the text between two indices into the system clipboard.
  void	delete (int startIndex, int endIndex)	Deletes the text between two indices
  boolean	doAccessibleAction (int i)	Performs the specified Action on the object
  AccessibleAction	getAccessibleAction ()	Gets the AccessibleAction associated with this object that supports one or more actions.
  int	getAccessibleActionCount ()	Returns the number of accessible actions available in this object If there are more than one, the first one is considered the "default" action of the object.
  String	getAccessibleActionDescription (int i)	Returns a description of the specified action of the object.
  AccessibleEditableText	getAccessibleEditableText ()	Returns the AccessibleEditableText interface for this text component.
  AccessibleRole	getAccessibleRole ()	Gets the role of this object.
  AccessibleStateSet	getAccessibleStateSet ()	Gets the state set of the JTextComponent.
  AccessibleText	getAccessibleText ()	Get the AccessibleText 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 ()	Returns the zero-based offset of the caret.
  AttributeSet	getCharacterAttribute (int i)	Returns the AttributeSet for a given character (at a given index).
  Rectangle	getCharacterBounds (int i)	Determines the bounding box of the character at the given index into the string.
  int	getCharCount ()	Returns the number of characters (valid indices)
  int	getIndexAtPoint (Point p)	Given a point in local coordinates, return the zero-based index of the character under that Point.
  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.
  Rectangle	getTextBounds (int startIndex, int endIndex)	Returns the Rectangle enclosing the text between two indicies.
  String	getTextRange (int startIndex, int endIndex)	Returns the text string between two indices.
  AccessibleTextSequence	getTextSequenceAfter (int part, int index)	Returns the AccessibleTextSequence after a given index.
  AccessibleTextSequence	getTextSequenceAt (int part, int index)	Returns the AccessibleTextSequence at a given index.
  AccessibleTextSequence	getTextSequenceBefore (int part, int index)	Returns the AccessibleTextSequence before a given index.
  void	insertTextAtIndex (int index, String s)	Inserts the specified string at the given index
  void	insertUpdate (DocumentEvent e)	Handles document insert (fire appropriate property change event which is AccessibleContext.ACCESSIBLE_TEXT_PROPERTY).
  void	paste (int startIndex)	Pastes the text from the system clipboard into the text starting at the specified index.
  void	removeUpdate (DocumentEvent e)	Handles document remove (fire appropriate property change event, which is AccessibleContext.ACCESSIBLE_TEXT_PROPERTY).
  void	replaceText (int startIndex, int endIndex, String s)	Replaces the text between two indices with the specified string.
  void	selectText (int startIndex, int endIndex)	Selects the text between two indices.
  void	setAttributes (int startIndex, int endIndex, AttributeSet as)	Sets attributes for the text between two indices.
  void	setTextContents (String s)	Sets the text contents to the specified string.

  • Methods inherited from class javax.swing.JComponent.AccessibleJComponent

    addPropertyChangeListener, getAccessibleChild, getAccessibleChildrenCount, getAccessibleDescription, getAccessibleKeyBinding, getAccessibleName, getBorderTitle, getTitledBorderText, getToolTipText, 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, getAccessibleIcon, getAccessibleRelationSet, getAccessibleSelection, getAccessibleTable, getAccessibleValue, 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

  • AccessibleJTextComponent

    public AccessibleJTextComponent()

    Constructs an AccessibleJTextComponent. Adds a listener to track caret change.

• Method Detail

  • caretUpdate

    public void caretUpdate(CaretEvent e)

    Handles caret updates (fire appropriate property change event, which are AccessibleContext.ACCESSIBLE_CARET_PROPERTY and AccessibleContext.ACCESSIBLE_SELECTION_PROPERTY). This keeps track of the dot position internally. When the caret moves, the internal position is updated after firing the event.

    Specified by:

    caretUpdate in interface CaretListener

    Parameters:

    e - the CaretEvent

  • insertUpdate

    public void insertUpdate(DocumentEvent e)

    Handles document insert (fire appropriate property change event which is AccessibleContext.ACCESSIBLE_TEXT_PROPERTY). This tracks the changed offset via the event.

    Specified by:

    insertUpdate in interface DocumentListener

    Parameters:

    e - the DocumentEvent

  • removeUpdate

    public void removeUpdate(DocumentEvent e)

    Handles document remove (fire appropriate property change event, which is AccessibleContext.ACCESSIBLE_TEXT_PROPERTY). This tracks the changed offset via the event.

    Specified by:

    removeUpdate in interface DocumentListener

    Parameters:

    e - the DocumentEvent

  • changedUpdate

    public void changedUpdate(DocumentEvent e)

    Handles document remove (fire appropriate property change event, which is AccessibleContext.ACCESSIBLE_TEXT_PROPERTY). This tracks the changed offset via the event.

    Specified by:

    changedUpdate in interface DocumentListener

    Parameters:

    e - the DocumentEvent

  • getAccessibleStateSet

    public AccessibleStateSet getAccessibleStateSet()

    Gets the state set of the JTextComponent. The AccessibleStateSet of an object is composed of a set of unique AccessibleState's. A change in the AccessibleStateSet of an object will cause a PropertyChangeEvent to be fired for the AccessibleContext.ACCESSIBLE_STATE_PROPERTY property.

    Overrides:

    getAccessibleStateSet in class JComponent.AccessibleJComponent

    Returns:

    an instance of AccessibleStateSet containing the current state set of the object

    See Also:

    AccessibleStateSet, AccessibleState, JComponent.AccessibleJComponent.addPropertyChangeListener(java.beans.PropertyChangeListener)

  • getAccessibleRole

    public AccessibleRole getAccessibleRole()

    Gets the role of this object.

    Overrides:

    getAccessibleRole in class JComponent.AccessibleJComponent

    Returns:

    an instance of AccessibleRole describing the role of the object (AccessibleRole.TEXT)

    See Also:

    AccessibleRole

  • getAccessibleText

    public AccessibleText getAccessibleText()

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

    Overrides:

    getAccessibleText in class AccessibleContext

    Returns:

    this object

    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.

    Specified by:

    getIndexAtPoint in interface AccessibleText

    Parameters:

    p - the Point in local coordinates

    Returns:

    the zero-based index of the character under Point p.

  • getCharacterBounds

    public Rectangle getCharacterBounds(int i)

    Determines 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 a null rectangle is returned. The screen coordinates returned are "unscrolled coordinates" if the JTextComponent is contained in a JScrollPane in which case the resulting rectangle should be composed with the parent coordinates. A good algorithm to use is:

     Accessible a:
     AccessibleText at = a.getAccessibleText();
     AccessibleComponent ac = a.getAccessibleComponent();
     Rectangle r = at.getCharacterBounds();
     Point p = ac.getLocation();
     r.x += p.x;
     r.y += p.y;
     

    Note: the JTextComponent 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 (non-null) value.

    Specified by:

    getCharacterBounds in interface AccessibleText

    Parameters:

    i - the index into the String ≥ 0

    Returns:

    the screen coordinates of the character's bounding box

  • getCharCount

    public int getCharCount()

    Returns the number of characters (valid indices)

    Specified by:

    getCharCount in interface AccessibleText

    Returns:

    the number of characters ≥ 0

  • getCaretPosition

    public int getCaretPosition()

    Returns the zero-based offset of the caret. Note: The character 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.

  • getCharacterAttribute

    public AttributeSet getCharacterAttribute(int i)

    Returns 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

  • 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. Return 0 if the text is empty, or the caret position if no selection.

    Specified by:

    getSelectionStart in interface AccessibleText

    Returns:

    the index into the text of the start of the selection ≥ 0

  • 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. Return 0 if the text is empty, or the caret position if no selection.

    Specified by:

    getSelectionEnd in interface AccessibleText

    Returns:

    the index into the text of the end of the selection ≥ 0

  • getSelectedText

    public String getSelectedText()

    Returns the portion of the text that is selected.

    Specified by:

    getSelectedText in interface AccessibleText

    Returns:

    the text, null if no selection

  • getAtIndex

    public String getAtIndex(int part,
     int index)

    Returns the String at a given index. Whitespace between words is treated as a word.

    Specified by:

    getAtIndex in interface AccessibleText

    Parameters:

    part - the CHARACTER, WORD, or SENTENCE to retrieve

    index - an index within the text

    Returns:

    the letter, word, or sentence.

  • getAfterIndex

    public String getAfterIndex(int part,
     int index)

    Returns the String after a given index. Whitespace between words is treated as a word.

    Specified by:

    getAfterIndex in interface AccessibleText

    Parameters:

    part - the CHARACTER, WORD, or SENTENCE to retrieve

    index - an index within the text

    Returns:

    the letter, word, or sentence.

  • getBeforeIndex

    public String getBeforeIndex(int part,
     int index)

    Returns the String before a given index. Whitespace between words is treated a word.

    Specified by:

    getBeforeIndex in interface AccessibleText

    Parameters:

    part - the CHARACTER, WORD, or SENTENCE to retrieve

    index - an index within the text

    Returns:

    the letter, word, or sentence.

  • getAccessibleEditableText

    public AccessibleEditableText getAccessibleEditableText()

    Returns the AccessibleEditableText interface for this text component.

    Overrides:

    getAccessibleEditableText in class AccessibleContext

    Returns:

    the AccessibleEditableText interface

    Since:

    1.4

    See Also:

    AccessibleEditableText

  • setTextContents

    public void setTextContents(String s)

    Sets the text contents to the specified string.

    Specified by:

    setTextContents in interface AccessibleEditableText

    Parameters:

    s - the string to set the text contents

    Since:

    1.4

  • insertTextAtIndex

    public void insertTextAtIndex(int index,
     String s)

    Inserts the specified string at the given index

    Specified by:

    insertTextAtIndex in interface AccessibleEditableText

    Parameters:

    index - the index in the text where the string will be inserted

    s - the string to insert in the text

    Since:

    1.4

  • getTextRange

    public String getTextRange(int startIndex,
     int endIndex)

    Returns the text string between two indices.

    Specified by:

    getTextRange in interface AccessibleEditableText

    Specified by:

    getTextRange in interface AccessibleExtendedText

    Parameters:

    startIndex - the starting index in the text

    endIndex - the ending index in the text

    Returns:

    the text string between the indices

    Since:

    1.4

  • delete

    public void delete(int startIndex,
     int endIndex)

    Deletes the text between two indices

    Specified by:

    delete in interface AccessibleEditableText

    Parameters:

    startIndex - the starting index in the text

    endIndex - the ending index in the text

    Since:

    1.4

  • cut

    public void cut(int startIndex,
     int endIndex)

    Cuts the text between two indices into the system clipboard.

    Specified by:

    cut in interface AccessibleEditableText

    Parameters:

    startIndex - the starting index in the text

    endIndex - the ending index in the text

    Since:

    1.4

  • paste

    public void paste(int startIndex)

    Pastes the text from the system clipboard into the text starting at the specified index.

    Specified by:

    paste in interface AccessibleEditableText

    Parameters:

    startIndex - the starting index in the text

    Since:

    1.4

  • replaceText

    public void replaceText(int startIndex,
     int endIndex,
     String s)

    Replaces the text between two indices with the specified string.

    Specified by:

    replaceText in interface AccessibleEditableText

    Parameters:

    startIndex - the starting index in the text

    endIndex - the ending index in the text

    s - the string to replace the text between two indices

    Since:

    1.4

  • selectText

    public void selectText(int startIndex,
     int endIndex)

    Selects the text between two indices.

    Specified by:

    selectText in interface AccessibleEditableText

    Parameters:

    startIndex - the starting index in the text

    endIndex - the ending index in the text

    Since:

    1.4

  • setAttributes

    public void setAttributes(int startIndex,
     int endIndex,
     AttributeSet as)

    Sets attributes for the text between two indices.

    Specified by:

    setAttributes in interface AccessibleEditableText

    Parameters:

    startIndex - the starting index in the text

    endIndex - the ending index in the text

    as - the attribute set

    Since:

    1.4

    See Also:

    AttributeSet

  • getTextSequenceAt

    public AccessibleTextSequence getTextSequenceAt(int part,
     int index)

    Returns the AccessibleTextSequence at a given index.

    Specified by:

    getTextSequenceAt in interface AccessibleExtendedText

    Parameters:

    part - the CHARACTER, WORD, SENTENCE, LINE or ATTRIBUTE_RUN to retrieve

    index - an index within the text

    Returns:

    an AccessibleTextSequence specifying the text if part and index are valid. Otherwise, null is returned

    Since:

    1.6

    See Also:

    AccessibleText.CHARACTER, AccessibleText.WORD, AccessibleText.SENTENCE, AccessibleExtendedText.LINE, AccessibleExtendedText.ATTRIBUTE_RUN

  • getTextSequenceAfter

    public AccessibleTextSequence getTextSequenceAfter(int part,
     int index)

    Returns the AccessibleTextSequence after a given index.

    Specified by:

    getTextSequenceAfter in interface AccessibleExtendedText

    Parameters:

    part - the CHARACTER, WORD, SENTENCE, LINE or ATTRIBUTE_RUN to retrieve

    index - an index within the text

    Returns:

    an AccessibleTextSequence specifying the text if part and index are valid. Otherwise, null is returned

    Since:

    1.6

    See Also:

    AccessibleText.CHARACTER, AccessibleText.WORD, AccessibleText.SENTENCE, AccessibleExtendedText.LINE, AccessibleExtendedText.ATTRIBUTE_RUN

  • getTextSequenceBefore

    public AccessibleTextSequence getTextSequenceBefore(int part,
     int index)

    Returns the AccessibleTextSequence before a given index.

    Specified by:

    getTextSequenceBefore in interface AccessibleExtendedText

    Parameters:

    part - the CHARACTER, WORD, SENTENCE, LINE or ATTRIBUTE_RUN to retrieve

    index - an index within the text

    Returns:

    an AccessibleTextSequence specifying the text if part and index are valid. Otherwise, null is returned

    Since:

    1.6

    See Also:

    AccessibleText.CHARACTER, AccessibleText.WORD, AccessibleText.SENTENCE, AccessibleExtendedText.LINE, AccessibleExtendedText.ATTRIBUTE_RUN

  • getTextBounds

    public Rectangle getTextBounds(int startIndex,
     int endIndex)

    Returns the Rectangle enclosing the text between two indicies.

    Specified by:

    getTextBounds in interface AccessibleExtendedText

    Parameters:

    startIndex - the start index in the text

    endIndex - the end index in the text

    Returns:

    the bounding rectangle of the text if the indices are valid. Otherwise, null is returned

    Since:

    1.6

  • getAccessibleAction

    public AccessibleAction getAccessibleAction()

    Description copied from class: AccessibleContext
    Gets the AccessibleAction associated with this object that supports one or more actions.

    Overrides:

    getAccessibleAction in class AccessibleContext

    Returns:

    AccessibleAction if supported by object; else return null

    See Also:

    AccessibleAction

  • getAccessibleActionCount

    public int getAccessibleActionCount()

    Returns the number of accessible actions available in this object If there are more than one, the first one is considered the "default" action of the object.

    Specified by:

    getAccessibleActionCount in interface AccessibleAction

    Returns:

    the zero-based number of Actions in this object

    Since:

    1.4

  • getAccessibleActionDescription

    public String getAccessibleActionDescription(int i)

    Returns 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

    Since:

    1.4

    See Also:

    getAccessibleActionCount()

  • doAccessibleAction

    public boolean doAccessibleAction(int i)

    Performs the specified Action on the object

    Specified by:

    doAccessibleAction in interface AccessibleAction

    Parameters:

    i - zero-based index of actions

    Returns:

    true if the action was performed; otherwise false.

    Since:

    1.4

    See Also:

    getAccessibleActionCount()