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- All Implemented Interfaces:
- Serializable, EventListener, AccessibleComponent, AccessibleExtendedComponent, AccessibleSelection, TreeExpansionListener, TreeModelListener, TreeSelectionListener
- Enclosing class:
- JTree
protected class JTree.AccessibleJTree extends JComponent.AccessibleJComponent implements AccessibleSelection, TreeSelectionListener, TreeModelListener, TreeExpansionListener
This class implements accessibility support for theJTree
class. It provides an implementation of the Java Accessibility API appropriate to tree 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 seeXMLEncoder
.
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Nested Class Summary
Nested Classes Modifier and Type Class and Description protected class
JTree.AccessibleJTree.AccessibleJTreeNode
This class implements accessibility support for theJTree
child.-
Nested classes/interfaces inherited from class javax.swing.JComponent.AccessibleJComponent
JComponent.AccessibleJComponent.AccessibleContainerHandler, JComponent.AccessibleJComponent.AccessibleFocusHandler
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Nested classes/interfaces inherited from class java.awt.Component.AccessibleAWTComponent
Component.AccessibleAWTComponent.AccessibleAWTComponentHandler, Component.AccessibleAWTComponent.AccessibleAWTFocusHandler
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Field Summary
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Fields inherited from class javax.swing.JComponent.AccessibleJComponent
accessibleFocusHandler
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Fields inherited from class java.awt.Container.AccessibleAWTContainer
accessibleContainerHandler
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Fields inherited from class java.awt.Component.AccessibleAWTComponent
accessibleAWTComponentHandler, accessibleAWTFocusHandler
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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
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Constructor Summary
Constructors Constructor and Description JTree.AccessibleJTree()
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Method Summary
Methods Modifier and Type Method and Description void
addAccessibleSelection(int i)
Adds the specified selected item in the object to the object's selection.void
clearAccessibleSelection()
Clears the selection in the object, so that nothing in the object is selected.void
fireVisibleDataPropertyChange()
Fire a visible data property change notification.Accessible
getAccessibleAt(Point p)
Returns theAccessible
child, if one exists, contained at the local coordinatePoint
.Accessible
getAccessibleChild(int i)
Return the nth Accessible child of the object.int
getAccessibleChildrenCount()
Returns the number of top-level children nodes of this JTree.int
getAccessibleIndexInParent()
Get the index of this object in its accessible parent.AccessibleRole
getAccessibleRole()
Get the role of this object.AccessibleSelection
getAccessibleSelection()
Get the AccessibleSelection associated with this object.Accessible
getAccessibleSelection(int i)
Returns an Accessible representing the specified selected item in the object.int
getAccessibleSelectionCount()
Returns the number of items currently selected.boolean
isAccessibleChildSelected(int i)
Returns true if the current child of this object is selected.void
removeAccessibleSelection(int i)
Removes the specified selected item in the object from the object's selection.void
selectAllAccessibleSelection()
Causes every selected item in the object to be selected if the object supports multiple selections.void
treeCollapsed(TreeExpansionEvent e)
Tree Collapsed notification.void
treeExpanded(TreeExpansionEvent e)
Tree Model Expansion notification.void
treeNodesChanged(TreeModelEvent e)
Tree Model Node change notification.void
treeNodesInserted(TreeModelEvent e)
Tree Model Node change notification.void
treeNodesRemoved(TreeModelEvent e)
Tree Model Node change notification.void
treeStructureChanged(TreeModelEvent e)
Tree Model structure change change notification.void
valueChanged(TreeSelectionEvent e)
Tree Selection Listener value change method.-
Methods inherited from class javax.swing.JComponent.AccessibleJComponent
addPropertyChangeListener, getAccessibleDescription, getAccessibleKeyBinding, getAccessibleName, getAccessibleStateSet, getBorderTitle, getTitledBorderText, getToolTipText, removePropertyChangeListener
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Methods inherited from class java.awt.Component.AccessibleAWTComponent
addFocusListener, contains, getAccessibleComponent, 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
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Methods inherited from class javax.accessibility.AccessibleContext
firePropertyChange, getAccessibleAction, getAccessibleEditableText, getAccessibleIcon, getAccessibleRelationSet, getAccessibleTable, getAccessibleText, getAccessibleValue, setAccessibleDescription, setAccessibleName, setAccessibleParent
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Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait
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Methods inherited from interface javax.accessibility.AccessibleComponent
addFocusListener, contains, getBackground, getBounds, getCursor, getFont, getFontMetrics, getForeground, getLocation, getLocationOnScreen, getSize, isEnabled, isFocusTraversable, isShowing, isVisible, removeFocusListener, requestFocus, setBackground, setBounds, setCursor, setEnabled, setFont, setForeground, setLocation, setSize, setVisible
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Method Detail
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valueChanged
public void valueChanged(TreeSelectionEvent e)
Tree Selection Listener value change method. Used to fire the property change- Specified by:
valueChanged
in interfaceTreeSelectionListener
- Parameters:
e
- ListSelectionEvent
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fireVisibleDataPropertyChange
public void fireVisibleDataPropertyChange()
Fire a visible data property change notification. A 'visible' data property is one that represents something about the way the component appears on the display, where that appearance isn't bound to any other property. It notifies screen readers that the visual appearance of the component has changed, so they can notify the user.
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treeNodesChanged
public void treeNodesChanged(TreeModelEvent e)
Tree Model Node change notification.- Specified by:
treeNodesChanged
in interfaceTreeModelListener
- Parameters:
e
- a Tree Model event
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treeNodesInserted
public void treeNodesInserted(TreeModelEvent e)
Tree Model Node change notification.- Specified by:
treeNodesInserted
in interfaceTreeModelListener
- Parameters:
e
- a Tree node insertion event
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treeNodesRemoved
public void treeNodesRemoved(TreeModelEvent e)
Tree Model Node change notification.- Specified by:
treeNodesRemoved
in interfaceTreeModelListener
- Parameters:
e
- a Tree node(s) removal event
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treeStructureChanged
public void treeStructureChanged(TreeModelEvent e)
Tree Model structure change change notification.- Specified by:
treeStructureChanged
in interfaceTreeModelListener
- Parameters:
e
- a Tree Model event
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treeCollapsed
public void treeCollapsed(TreeExpansionEvent e)
Tree Collapsed notification.- Specified by:
treeCollapsed
in interfaceTreeExpansionListener
- Parameters:
e
- a TreeExpansionEvent
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treeExpanded
public void treeExpanded(TreeExpansionEvent e)
Tree Model Expansion notification.- Specified by:
treeExpanded
in interfaceTreeExpansionListener
- Parameters:
e
- a Tree node insertion event
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getAccessibleRole
public AccessibleRole getAccessibleRole()
Get the role of this object.- Overrides:
getAccessibleRole
in classJComponent.AccessibleJComponent
- Returns:
- an instance of AccessibleRole describing the role of the object
- See Also:
AccessibleRole
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getAccessibleAt
public Accessible getAccessibleAt(Point p)
Returns theAccessible
child, if one exists, contained at the local coordinatePoint
. Otherwise returnsnull
.- Specified by:
getAccessibleAt
in interfaceAccessibleComponent
- Overrides:
getAccessibleAt
in classContainer.AccessibleAWTContainer
- Parameters:
p
- point in local coordinates of thisAccessible
- Returns:
- the
Accessible
, if it exists, at the specified location; elsenull
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getAccessibleChildrenCount
public int getAccessibleChildrenCount()
Returns the number of top-level children nodes of this JTree. Each of these nodes may in turn have children nodes.- Overrides:
getAccessibleChildrenCount
in classJComponent.AccessibleJComponent
- Returns:
- the number of accessible children nodes in the tree.
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getAccessibleChild
public Accessible getAccessibleChild(int i)
Return the nth Accessible child of the object.- Overrides:
getAccessibleChild
in classJComponent.AccessibleJComponent
- Parameters:
i
- zero-based index of child- Returns:
- the nth Accessible child of the object
- See Also:
AccessibleContext.getAccessibleChildrenCount()
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getAccessibleIndexInParent
public int getAccessibleIndexInParent()
Get the index of this object in its accessible parent.- Overrides:
getAccessibleIndexInParent
in classComponent.AccessibleAWTComponent
- Returns:
- the index of this object in its parent. Since a JTree top-level object does not have an accessible parent.
- See Also:
Component.AccessibleAWTComponent.getAccessibleParent()
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getAccessibleSelection
public AccessibleSelection getAccessibleSelection()
Get the AccessibleSelection associated with this object. In the implementation of the Java Accessibility API for this class, return this object, which is responsible for implementing the AccessibleSelection interface on behalf of itself.- Overrides:
getAccessibleSelection
in classAccessibleContext
- Returns:
- this object
- See Also:
AccessibleSelection
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getAccessibleSelectionCount
public int getAccessibleSelectionCount()
Returns the number of items currently selected. If no items are selected, the return value will be 0.- Specified by:
getAccessibleSelectionCount
in interfaceAccessibleSelection
- Returns:
- the number of items currently selected.
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getAccessibleSelection
public Accessible getAccessibleSelection(int i)
Returns an Accessible representing the specified selected item in the object. If there isn't a selection, or there are fewer items selected than the integer passed in, the return value will be null.- Specified by:
getAccessibleSelection
in interfaceAccessibleSelection
- Parameters:
i
- the zero-based index of selected items- Returns:
- an Accessible containing the selected item
- See Also:
AccessibleSelection.getAccessibleSelectionCount()
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isAccessibleChildSelected
public boolean isAccessibleChildSelected(int i)
Returns true if the current child of this object is selected.- Specified by:
isAccessibleChildSelected
in interfaceAccessibleSelection
- Parameters:
i
- the zero-based index of the child in this Accessible object.- Returns:
- true if the current child of this object is selected; else false.
- See Also:
AccessibleContext.getAccessibleChild(int)
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addAccessibleSelection
public void addAccessibleSelection(int i)
Adds the specified selected item in the object to the object's selection. If the object supports multiple selections, the specified item is added to any existing selection, otherwise it replaces any existing selection in the object. If the specified item is already selected, this method has no effect.- Specified by:
addAccessibleSelection
in interfaceAccessibleSelection
- Parameters:
i
- the zero-based index of selectable items- See Also:
AccessibleContext.getAccessibleChild(int)
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removeAccessibleSelection
public void removeAccessibleSelection(int i)
Removes the specified selected item in the object from the object's selection. If the specified item isn't currently selected, this method has no effect.- Specified by:
removeAccessibleSelection
in interfaceAccessibleSelection
- Parameters:
i
- the zero-based index of selectable items- See Also:
AccessibleContext.getAccessibleChild(int)
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clearAccessibleSelection
public void clearAccessibleSelection()
Clears the selection in the object, so that nothing in the object is selected.- Specified by:
clearAccessibleSelection
in interfaceAccessibleSelection
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selectAllAccessibleSelection
public void selectAllAccessibleSelection()
Causes every selected item in the object to be selected if the object supports multiple selections.- Specified by:
selectAllAccessibleSelection
in interfaceAccessibleSelection
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Bij voorbaat dank.
Document heeft de 11/06/2005 gemaakt, de laatste keer de 04/03/2020 gewijzigd
Bron van het afgedrukte document:https://www.gaudry.be/nl/java-api-rf-javax/swing/jtree.accessiblejtree.html
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