JTextComponent.AccessibleJTextComponent (Java 2 Platform SE 5.0) (original) (raw)
javax.swing.text
Class JTextComponent.AccessibleJTextComponent
java.lang.Object
javax.accessibility.AccessibleContext
java.awt.Component.AccessibleAWTComponent
java.awt.Container.AccessibleAWTContainer
javax.swing.JComponent.AccessibleJComponent
javax.swing.text.JTextComponent.AccessibleJTextComponent
All Implemented Interfaces:
Serializable, EventListener, AccessibleAction, AccessibleComponent, AccessibleEditableText, AccessibleExtendedComponent, AccessibleText, CaretListener, DocumentListener
Direct Known Subclasses:
JEditorPane.AccessibleJEditorPane, JTextArea.AccessibleJTextArea, JTextField.AccessibleJTextField
Enclosing class:
public class JTextComponent.AccessibleJTextComponent
extends JComponent.AccessibleJComponent
implements AccessibleText, CaretListener, DocumentListener, AccessibleAction, AccessibleEditableText
This class implements accessibility support for the JTextComponent
class. It provides an implementation of the Java Accessibility API appropriate to menu 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 JavaBeansTM has been added to the java.beans
package. Please see XMLEncoder.
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 |
---|
accessibleContainerHandler, accessibleFocusHandler |
Fields inherited from class java.awt.Component.AccessibleAWTComponent |
---|
accessibleAWTComponentHandler, accessibleAWTFocusHandler |
Fields inherited from interface javax.accessibility.AccessibleAction |
---|
DECREMENT, INCREMENT, TOGGLE_EXPAND |
Constructor Summary |
---|
JTextComponent.AccessibleJTextComponent() Constructs an AccessibleJTextComponent. |
Method Summary | |
---|---|
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](../../../javax/swing/text/JTextComponent.AccessibleJTextComponent.html#cut%28int, int%29)(int startIndex, int endIndex) Cuts the text between two indices into the system clipboard. |
void | [delete](../../../javax/swing/text/JTextComponent.AccessibleJTextComponent.html#delete%28int, int%29)(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](../../../javax/swing/text/JTextComponent.AccessibleJTextComponent.html#getAfterIndex%28int, int%29)(int part, int index) Returns the String after a given index. |
String | [getAtIndex](../../../javax/swing/text/JTextComponent.AccessibleJTextComponent.html#getAtIndex%28int, int%29)(int part, int index) Returns the String at a given index. |
String | [getBeforeIndex](../../../javax/swing/text/JTextComponent.AccessibleJTextComponent.html#getBeforeIndex%28int, int%29)(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. |
String | [getTextRange](../../../javax/swing/text/JTextComponent.AccessibleJTextComponent.html#getTextRange%28int, int%29)(int startIndex, int endIndex) Returns the text string between two indices. |
void | [insertTextAtIndex](../../../javax/swing/text/JTextComponent.AccessibleJTextComponent.html#insertTextAtIndex%28int, java.lang.String%29)(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](../../../javax/swing/text/JTextComponent.AccessibleJTextComponent.html#replaceText%28int, int, java.lang.String%29)(int startIndex, int endIndex,String s) Replaces the text between two indices with the specified string. |
void | [selectText](../../../javax/swing/text/JTextComponent.AccessibleJTextComponent.html#selectText%28int, int%29)(int startIndex, int endIndex) Selects the text between two indices. |
void | [setAttributes](../../../javax/swing/text/JTextComponent.AccessibleJTextComponent.html#setAttributes%28int, int, javax.swing.text.AttributeSet%29)(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 javax.accessibility.AccessibleContext |
---|
[firePropertyChange](../../../javax/accessibility/AccessibleContext.html#firePropertyChange%28java.lang.String, java.lang.Object, java.lang.Object%29), 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](../../../java/lang/Object.html#wait%28long, int%29) |
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 |
---|
JTextComponent.AccessibleJTextComponent
public JTextComponent.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](../../../javax/swing/event/CaretListener.html#caretUpdate%28javax.swing.event.CaretEvent%29)
in interface [CaretListener](../../../javax/swing/event/CaretListener.html "interface in javax.swing.event")
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](../../../javax/swing/event/DocumentListener.html#insertUpdate%28javax.swing.event.DocumentEvent%29)
in interface [DocumentListener](../../../javax/swing/event/DocumentListener.html "interface in javax.swing.event")
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](../../../javax/swing/event/DocumentListener.html#removeUpdate%28javax.swing.event.DocumentEvent%29)
in interface [DocumentListener](../../../javax/swing/event/DocumentListener.html "interface in javax.swing.event")
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](../../../javax/swing/event/DocumentListener.html#changedUpdate%28javax.swing.event.DocumentEvent%29)
in interface [DocumentListener](../../../javax/swing/event/DocumentListener.html "interface in javax.swing.event")
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](../../../javax/swing/JComponent.AccessibleJComponent.html#getAccessibleStateSet%28%29)
in class [JComponent.AccessibleJComponent](../../../javax/swing/JComponent.AccessibleJComponent.html "class in javax.swing")
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](../../../javax/swing/JComponent.AccessibleJComponent.html#getAccessibleRole%28%29)
in class [JComponent.AccessibleJComponent](../../../javax/swing/JComponent.AccessibleJComponent.html "class in javax.swing")
Returns:
an instance of AccessibleRole describing the role of the object (AccessibleRole.TEXT)
See Also:
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](../../../javax/accessibility/AccessibleContext.html#getAccessibleText%28%29)
in class [AccessibleContext](../../../javax/accessibility/AccessibleContext.html "class in javax.accessibility")
Returns:
this object
See Also:
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](../../../javax/accessibility/AccessibleText.html#getIndexAtPoint%28java.awt.Point%29)
in interface [AccessibleText](../../../javax/accessibility/AccessibleText.html "interface in javax.accessibility")
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](../../../javax/accessibility/AccessibleText.html#getCharacterBounds%28int%29)
in interface [AccessibleText](../../../javax/accessibility/AccessibleText.html "interface in javax.accessibility")
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](../../../javax/accessibility/AccessibleText.html#getCharCount%28%29)
in interface [AccessibleText](../../../javax/accessibility/AccessibleText.html "interface in javax.accessibility")
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](../../../javax/accessibility/AccessibleText.html#getCaretPosition%28%29)
in interface [AccessibleText](../../../javax/accessibility/AccessibleText.html "interface in javax.accessibility")
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](../../../javax/accessibility/AccessibleText.html#getCharacterAttribute%28int%29)
in interface [AccessibleText](../../../javax/accessibility/AccessibleText.html "interface in javax.accessibility")
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](../../../javax/accessibility/AccessibleText.html#getSelectionStart%28%29)
in interface [AccessibleText](../../../javax/accessibility/AccessibleText.html "interface in javax.accessibility")
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](../../../javax/accessibility/AccessibleText.html#getSelectionEnd%28%29)
in interface [AccessibleText](../../../javax/accessibility/AccessibleText.html "interface in javax.accessibility")
Returns:
the index into teh text of the end of the selection >= 0
getSelectedText
public String getSelectedText()
Returns the portion of the text that is selected.
Specified by:
[getSelectedText](../../../javax/accessibility/AccessibleText.html#getSelectedText%28%29)
in interface [AccessibleText](../../../javax/accessibility/AccessibleText.html "interface in javax.accessibility")
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](../../../javax/accessibility/AccessibleText.html#getAtIndex%28int, int%29)
in interface [AccessibleText](../../../javax/accessibility/AccessibleText.html "interface in javax.accessibility")
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](../../../javax/accessibility/AccessibleText.html#getAfterIndex%28int, int%29)
in interface [AccessibleText](../../../javax/accessibility/AccessibleText.html "interface in javax.accessibility")
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](../../../javax/accessibility/AccessibleText.html#getBeforeIndex%28int, int%29)
in interface [AccessibleText](../../../javax/accessibility/AccessibleText.html "interface in javax.accessibility")
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](../../../javax/accessibility/AccessibleContext.html#getAccessibleEditableText%28%29)
in class [AccessibleContext](../../../javax/accessibility/AccessibleContext.html "class in javax.accessibility")
Returns:
the AccessibleEditableText interface
See Also:
setTextContents
public void setTextContents(String s)
Sets the text contents to the specified string.
Specified by:
[setTextContents](../../../javax/accessibility/AccessibleEditableText.html#setTextContents%28java.lang.String%29)
in interface [AccessibleEditableText](../../../javax/accessibility/AccessibleEditableText.html "interface in javax.accessibility")
Parameters:
s
- the string to set the text contents
insertTextAtIndex
public void insertTextAtIndex(int index, String s)
Inserts the specified string at the given index
Specified by:
[insertTextAtIndex](../../../javax/accessibility/AccessibleEditableText.html#insertTextAtIndex%28int, java.lang.String%29)
in interface [AccessibleEditableText](../../../javax/accessibility/AccessibleEditableText.html "interface in javax.accessibility")
Parameters:
index
- the index in the text where the string will be inserted
s
- the string to insert in the text
getTextRange
public String getTextRange(int startIndex, int endIndex)
Returns the text string between two indices.
Specified by:
[getTextRange](../../../javax/accessibility/AccessibleEditableText.html#getTextRange%28int, int%29)
in interface [AccessibleEditableText](../../../javax/accessibility/AccessibleEditableText.html "interface in javax.accessibility")
Parameters:
startIndex
- the starting index in the text
endIndex
- the ending index in the text
Returns:
the text string between the indices
delete
public void delete(int startIndex, int endIndex)
Deletes the text between two indices
Specified by:
[delete](../../../javax/accessibility/AccessibleEditableText.html#delete%28int, int%29)
in interface [AccessibleEditableText](../../../javax/accessibility/AccessibleEditableText.html "interface in javax.accessibility")
Parameters:
startIndex
- the starting index in the text
endIndex
- the ending index in the text
cut
public void cut(int startIndex, int endIndex)
Cuts the text between two indices into the system clipboard.
Specified by:
[cut](../../../javax/accessibility/AccessibleEditableText.html#cut%28int, int%29)
in interface [AccessibleEditableText](../../../javax/accessibility/AccessibleEditableText.html "interface in javax.accessibility")
Parameters:
startIndex
- the starting index in the text
endIndex
- the ending index in the text
paste
public void paste(int startIndex)
Pastes the text from the system clipboard into the text starting at the specified index.
Specified by:
[paste](../../../javax/accessibility/AccessibleEditableText.html#paste%28int%29)
in interface [AccessibleEditableText](../../../javax/accessibility/AccessibleEditableText.html "interface in javax.accessibility")
Parameters:
startIndex
- the starting index in the text
replaceText
public void replaceText(int startIndex, int endIndex, String s)
Replaces the text between two indices with the specified string.
Specified by:
[replaceText](../../../javax/accessibility/AccessibleEditableText.html#replaceText%28int, int, java.lang.String%29)
in interface [AccessibleEditableText](../../../javax/accessibility/AccessibleEditableText.html "interface in javax.accessibility")
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
selectText
public void selectText(int startIndex, int endIndex)
Selects the text between two indices.
Specified by:
[selectText](../../../javax/accessibility/AccessibleEditableText.html#selectText%28int, int%29)
in interface [AccessibleEditableText](../../../javax/accessibility/AccessibleEditableText.html "interface in javax.accessibility")
Parameters:
startIndex
- the starting index in the text
endIndex
- the ending index in the text
setAttributes
public void setAttributes(int startIndex, int endIndex, AttributeSet as)
Sets attributes for the text between two indices.
Specified by:
[setAttributes](../../../javax/accessibility/AccessibleEditableText.html#setAttributes%28int, int, javax.swing.text.AttributeSet%29)
in interface [AccessibleEditableText](../../../javax/accessibility/AccessibleEditableText.html "interface in javax.accessibility")
Parameters:
startIndex
- the starting index in the text
endIndex
- the ending index in the text
as
- the attribute set
See Also:
getAccessibleAction
public AccessibleAction getAccessibleAction()
Description copied from class: [AccessibleContext](../../../javax/accessibility/AccessibleContext.html#getAccessibleAction%28%29)
Gets the AccessibleAction associated with this object that supports one or more actions.
Overrides:
[getAccessibleAction](../../../javax/accessibility/AccessibleContext.html#getAccessibleAction%28%29)
in class [AccessibleContext](../../../javax/accessibility/AccessibleContext.html "class in javax.accessibility")
Returns:
AccessibleAction if supported by object; else return null
See Also:
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](../../../javax/accessibility/AccessibleAction.html#getAccessibleActionCount%28%29)
in interface [AccessibleAction](../../../javax/accessibility/AccessibleAction.html "interface in javax.accessibility")
Returns:
the zero-based number of Actions in this object
getAccessibleActionDescription
public String getAccessibleActionDescription(int i)
Returns a description of the specified action of the object.
Specified by:
[getAccessibleActionDescription](../../../javax/accessibility/AccessibleAction.html#getAccessibleActionDescription%28int%29)
in interface [AccessibleAction](../../../javax/accessibility/AccessibleAction.html "interface in javax.accessibility")
Parameters:
i
- zero-based index of the actions
Returns:
a String description of the action
See Also:
doAccessibleAction
public boolean doAccessibleAction(int i)
Performs the specified Action on the object
Specified by:
[doAccessibleAction](../../../javax/accessibility/AccessibleAction.html#doAccessibleAction%28int%29)
in interface [AccessibleAction](../../../javax/accessibility/AccessibleAction.html "interface in javax.accessibility")
Parameters:
i
- zero-based index of actions
Returns:
true if the action was performed; otherwise false.
See Also:
Submit a bug or feature
For further API reference and developer documentation, see Java 2 SDK SE Developer Documentation. That documentation contains more detailed, developer-targeted descriptions, with conceptual overviews, definitions of terms, workarounds, and working code examples.
Copyright © 2004, 2010 Oracle and/or its affiliates. All rights reserved. Use is subject to license terms. Also see the documentation redistribution policy.