JTree 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 JavaBeans
* has been added to the java.beans package.
* Please see {@link java.beans.XMLEncoder}.
*/
@SuppressWarnings("serial")
protected class MyAccessibleJTree extends AccessibleJTree
implements AccessibleSelection, TreeSelectionListener,
TreeModelListener, TreeExpansionListener {
TreePath leadSelectionPath;
Accessible leadSelectionAccessible;
/**
* Constructs {@code AccessibleJTree}
*/
public MyAccessibleJTree() {
// Add a tree model listener for JTree
TreeModel model = MyJTree.this.getModel();
if (model != null) {
model.addTreeModelListener(this);
}
MyJTree.this.addTreeExpansionListener(this);
MyJTree.this.addTreeSelectionListener(this);
leadSelectionPath = MyJTree.this.getLeadSelectionPath();
leadSelectionAccessible = (leadSelectionPath != null)
? new MyAccessibleJTreeNode(MyJTree.this,
leadSelectionPath,
MyJTree.this)
: null;
}
/**
* Tree Selection Listener value change method. Used to fire the
* property change
*
* @param e ListSelectionEvent
*
*/
public void valueChanged(TreeSelectionEvent e) {
firePropertyChange(AccessibleContext.ACCESSIBLE_SELECTION_PROPERTY,
Boolean.valueOf(false), Boolean.valueOf(true));
}
/**
* 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.
*/
public void fireVisibleDataPropertyChange() {
firePropertyChange(AccessibleContext.ACCESSIBLE_VISIBLE_DATA_PROPERTY,
Boolean.valueOf(false), Boolean.valueOf(true));
}
// Fire the visible data changes for the model changes.
/**
* Tree Model Node change notification.
*
* @param e a Tree Model event
*/
public void treeNodesChanged(TreeModelEvent e) {
fireVisibleDataPropertyChange();
}
/**
* Tree Model Node change notification.
*
* @param e a Tree node insertion event
*/
public void treeNodesInserted(TreeModelEvent e) {
fireVisibleDataPropertyChange();
}
/**
* Tree Model Node change notification.
*
* @param e a Tree node(s) removal event
*/
public void treeNodesRemoved(TreeModelEvent e) {
fireVisibleDataPropertyChange();
}
/**
* Tree Model structure change change notification.
*
* @param e a Tree Model event
*/
public void treeStructureChanged(TreeModelEvent e) {
fireVisibleDataPropertyChange();
}
/**
* Tree Collapsed notification.
*
* @param e a TreeExpansionEvent
*/
public void treeCollapsed(TreeExpansionEvent e) {
fireVisibleDataPropertyChange();
TreePath path = e.getPath();
if (path != null) {
// Set parent to null so AccessibleJTreeNode computes
// its parent.
MyAccessibleJTreeNode node = new MyAccessibleJTreeNode(MyJTree.this,
path,
null);
PropertyChangeEvent pce = new PropertyChangeEvent(node,
AccessibleContext.ACCESSIBLE_STATE_PROPERTY,
AccessibleState.EXPANDED,
AccessibleState.COLLAPSED);
firePropertyChange(AccessibleContext.ACCESSIBLE_STATE_PROPERTY,
null, pce);
}
}
/**
* Tree Model Expansion notification.
*
* @param e a Tree node insertion event
*/
public void treeExpanded(TreeExpansionEvent e) {
fireVisibleDataPropertyChange();
TreePath path = e.getPath();
if (path != null) {
// TIGER - 4839971
// Set parent to null so AccessibleJTreeNode computes
// its parent.
MyAccessibleJTreeNode node = new MyAccessibleJTreeNode(MyJTree.this,
path,
null);
PropertyChangeEvent pce = new PropertyChangeEvent(node,
AccessibleContext.ACCESSIBLE_STATE_PROPERTY,
AccessibleState.COLLAPSED,
AccessibleState.EXPANDED);
firePropertyChange(AccessibleContext.ACCESSIBLE_STATE_PROPERTY,
null, pce);
}
}
/**
* Fire an active descendant property change notification.
* The active descendant is used for objects such as list,
* tree, and table, which may have transient children.
* It notifies screen readers the active child of the component
* has been changed so user can be notified from there.
*
* @param oldPath - lead path of previous active child
* @param newPath - lead path of current active child
*
*/
void fireActiveDescendantPropertyChange(TreePath oldPath, TreePath newPath){
if(oldPath != newPath){
Accessible oldLSA = (oldPath != null)
? new MyAccessibleJTreeNode(MyJTree.this,
oldPath,
null)
: null;
Accessible newLSA = (newPath != null)
? new MyAccessibleJTreeNode(MyJTree.this,
newPath,
null)
: null;
firePropertyChange(AccessibleContext.ACCESSIBLE_ACTIVE_DESCENDANT_PROPERTY,
oldLSA, newLSA);
}
}
private AccessibleContext getCurrentAccessibleContext() {
Component c = getCurrentComponent();
if (c instanceof Accessible) {
return c.getAccessibleContext();
} else {
return null;
}
}
private Component getCurrentComponent() {
// is the object visible?
// if so, get row, selected, focus & leaf state,
// and then get the renderer component and return it
TreeModel model = MyJTree.this.getModel();
if (model == null) {
return null;
}
Object treeRoot = model.getRoot();
if (treeRoot == null) {
return null;
}
TreePath path = new TreePath(treeRoot);
if (MyJTree.this.isVisible(path)) {
TreeCellRenderer r = MyJTree.this.getCellRenderer();
TreeUI ui = MyJTree.this.getUI();
if (ui != null) {
int row = ui.getRowForPath(MyJTree.this, path);
int lsr = MyJTree.this.getLeadSelectionRow();
boolean hasFocus = MyJTree.this.isFocusOwner()
&& (lsr == row);
boolean selected = MyJTree.this.isPathSelected(path);
boolean expanded = MyJTree.this.isExpanded(path);
return r.getTreeCellRendererComponent(MyJTree.this,
treeRoot, selected, expanded,
model.isLeaf(treeRoot), row, hasFocus);
}
}
return null;
}
// Overridden methods from AccessibleJComponent
/**
* Get the role of this object.
*
* @return an instance of AccessibleRole describing the role of the
* object
* @see AccessibleRole
*/
public AccessibleRole getAccessibleRole() {
return AccessibleRole.TREE;
}
/**
* Returns the Accessible child, if one exists,
* contained at the local coordinate Point.
* Otherwise returns null.
*
* @param p point in local coordinates of this Accessible
* @return the Accessible, if it exists,
* at the specified location; else null
*/
public Accessible getAccessibleAt(Point p) {
TreePath path = getClosestPathForLocation(p.x, p.y);
if (path != null) {
// MyJTree.this is NOT the parent; parent will get computed later
return new MyAccessibleJTreeNode(MyJTree.this, path, null);
} else {
return null;
}
}
/**
* Returns the number of top-level children nodes of this
* JTree. Each of these nodes may in turn have children nodes.
*
* @return the number of accessible children nodes in the tree.
*/
public int getAccessibleChildrenCount() {
TreeModel model = MyJTree.this.getModel();
if (model == null) {
return 0;
}
if (isRootVisible()) {
return 1; // the root node
}
Object treeRoot = model.getRoot();
if (treeRoot == null)
return 0;
// return the root's first set of children count
return model.getChildCount(treeRoot);
}
/**
* Return the nth Accessible child of the object.
*
* @param i zero-based index of child
* @return the nth Accessible child of the object
*/
public Accessible getAccessibleChild(int i) {
TreeModel model = MyJTree.this.getModel();
if (model == null) {
return null;
}
Object treeRoot = model.getRoot();
if (treeRoot == null) {
return null;
}
if (isRootVisible()) {
if (i == 0) { // return the root node Accessible
Object[] objPath = { treeRoot };
TreePath path = new TreePath(objPath);
return new MyAccessibleJTreeNode(MyJTree.this, path, MyJTree.this);
} else {
return null;
}
}
// return Accessible for one of root's child nodes
int count = model.getChildCount(treeRoot);
if (i < 0 || i >= count) {
return null;
}
Object obj = model.getChild(treeRoot, i);
if (obj == null)
return null;
Object[] objPath = {treeRoot, obj };
TreePath path = new TreePath(objPath);
return new MyAccessibleJTreeNode(MyJTree.this, path, MyJTree.this);
}
/**
* Get the index of this object in its accessible parent.
*
* @return the index of this object in its parent. Since a JTree
* top-level object does not have an accessible parent.
* @see #getAccessibleParent
*/
public int getAccessibleIndexInParent() {
// didn't ever need to override this...
return super.getAccessibleIndexInParent();
}
// AccessibleSelection methods
/**
* 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.
*
* @return this object
*/
public AccessibleSelection getAccessibleSelection() {
return this;
}
/**
* Returns the number of items currently selected.
* If no items are selected, the return value will be 0.
*
* @return the number of items currently selected.
*/
public int getAccessibleSelectionCount() {
Object[] rootPath = new Object[1];
rootPath[0] = treeModel.getRoot();
if (rootPath[0] == null)
return 0;
TreePath childPath = new TreePath(rootPath);
if (MyJTree.this.isPathSelected(childPath)) {
return 1;
} else {
return 0;
}
}
/**
* 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.
*
* @param i the zero-based index of selected items
* @return an Accessible containing the selected item
*/
public Accessible getAccessibleSelection(int i) {
// The JTree can have only one accessible child, the root.
if (i == 0) {
Object[] rootPath = new Object[1];
rootPath[0] = treeModel.getRoot();
if (rootPath[0] == null)
return null;
TreePath childPath = new TreePath(rootPath);
if (MyJTree.this.isPathSelected(childPath)) {
return new MyAccessibleJTreeNode(MyJTree.this, childPath, MyJTree.this);
}
}
return null;
}
/**
* Returns true if the current child of this object is selected.
*
* @param i the zero-based index of the child in this Accessible object.
* @see AccessibleContext#getAccessibleChild
*/
public boolean isAccessibleChildSelected(int i) {
// The JTree can have only one accessible child, the root.
if (i == 0) {
Object[] rootPath = new Object[1];
rootPath[0] = treeModel.getRoot();
if (rootPath[0] == null)
return false;
TreePath childPath = new TreePath(rootPath);
return MyJTree.this.isPathSelected(childPath);
} else {
return false;
}
}
/**
* 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.
*
* @param i the zero-based index of selectable items
*/
public void addAccessibleSelection(int i) {
TreeModel model = MyJTree.this.getModel();
if (model != null) {
if (i == 0) {
Object[] objPath = {model.getRoot()};
if (objPath[0] == null)
return;
TreePath path = new TreePath(objPath);
MyJTree.this.addSelectionPath(path);
}
}
}
/**
* 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.
*
* @param i the zero-based index of selectable items
*/
public void removeAccessibleSelection(int i) {
TreeModel model = MyJTree.this.getModel();
if (model != null) {
if (i == 0) {
Object[] objPath = {model.getRoot()};
if (objPath[0] == null)
return;
TreePath path = new TreePath(objPath);
MyJTree.this.removeSelectionPath(path);
}
}
}
/**
* Clears the selection in the object, so that nothing in the
* object is selected.
*/
public void clearAccessibleSelection() {
int childCount = getAccessibleChildrenCount();
for (int i = 0; i < childCount; i++) {
removeAccessibleSelection(i);
}
}
/**
* Causes every selected item in the object to be selected
* if the object supports multiple selections.
*/
public void selectAllAccessibleSelection() {
TreeModel model = MyJTree.this.getModel();
if (model != null) {
Object[] objPath = {model.getRoot()};
if (objPath[0] == null)
return;
TreePath path = new TreePath(objPath);
MyJTree.this.addSelectionPath(path);
}
}
/**
* This class implements accessibility support for the
* JTree child. It provides an implementation of the
* Java Accessibility API appropriate to tree nodes.
*/
protected class MyAccessibleJTreeNode extends AccessibleContext
implements Accessible, AccessibleComponent, AccessibleSelection,
AccessibleAction {
// static {
// SwingAccessor.setAccessibleComponentAccessor(new AccessibleJTreeNodeAccessor());
// }
//
// private static class AccessibleJTreeNodeAccessor implements SwingAccessor.AccessibleComponentAccessor {
//
// private AccessibleJTreeNodeAccessor() {}
//
// @Override
// public Accessible getCurrentAccessible(AccessibleContext ac) {
// if (ac instanceof AccessibleJTreeNode) {
// Component c = ((AccessibleJTreeNode) ac).getCurrentComponent();
// if (c instanceof Accessible) {
// return (Accessible)c;
// }
// }
// return null;
// }
// }
private JTree tree = null;
private TreeModel treeModel = null;
private Object obj = null;
private TreePath path = null;
private Accessible accessibleParent = null;
private int index = 0;
private boolean isLeaf = false;
/**
* Constructs an AccessibleJTreeNode
*
* @param t an instance of {@code JTree}
* @param p an instance of {@code TreePath}
* @param ap an instance of {@code Accessible}
* @since 1.4
*/
public MyAccessibleJTreeNode(JTree t, TreePath p, Accessible ap) {
tree = t;
path = p;
accessibleParent = ap;
treeModel = t.getModel();
obj = p.getLastPathComponent();
if (treeModel != null) {
isLeaf = treeModel.isLeaf(obj);
}
}
private TreePath getChildTreePath(int i) {
// Tree nodes can't be so complex that they have
// two sets of children -> we're ignoring that case
if (i < 0 || i >= getAccessibleChildrenCount()) {
return null;
} else {
Object childObj = treeModel.getChild(obj, i);
Object[] objPath = path.getPath();
Object[] objChildPath = new Object[objPath.length+1];
java.lang.System.arraycopy(objPath, 0, objChildPath, 0, objPath.length);
objChildPath[objChildPath.length-1] = childObj;
return new TreePath(objChildPath);
}
}
/**
* Get the AccessibleContext associated with this tree node.
* In the implementation of the Java Accessibility API for
* this class, return this object, which is its own
* AccessibleContext.
*
* @return this object
*/
public AccessibleContext getAccessibleContext() {
return this;
}
private AccessibleContext getCurrentAccessibleContext() {
Component c = getCurrentComponent();
if (c instanceof Accessible) {
return c.getAccessibleContext();
} else {
return null;
}
}
private Component getCurrentComponent() {
// is the object visible?
// if so, get row, selected, focus & leaf state,
// and then get the renderer component and return it
if (tree.isVisible(path)) {
TreeCellRenderer r = tree.getCellRenderer();
if (r == null) {
return null;
}
TreeUI ui = tree.getUI();
if (ui != null) {
int row = ui.getRowForPath(MyJTree.this, path);
boolean selected = tree.isPathSelected(path);
boolean expanded = tree.isExpanded(path);
boolean hasFocus = false; // how to tell?? -PK
return r.getTreeCellRendererComponent(tree, obj,
selected, expanded, isLeaf, row, hasFocus);
}
}
return null;
}
// AccessibleContext methods
/**
* Get the accessible name of this object.
*
* @return the localized name of the object; null if this
* object does not have a name
*/
public String getAccessibleName() {
AccessibleContext ac = getCurrentAccessibleContext();
if (ac != null) {
String name = ac.getAccessibleName();
if ((name != null) && (name != "")) {
return ac.getAccessibleName();
} else {
return null;
}
}
if ((accessibleName != null) && (accessibleName != "")) {
return accessibleName;
} else {
// fall back to the client property
return (String)getClientProperty(AccessibleContext.ACCESSIBLE_NAME_PROPERTY);
}
}
/**
* Set the localized accessible name of this object.
*
* @param s the new localized name of the object.
*/
public void setAccessibleName(String s) {
AccessibleContext ac = getCurrentAccessibleContext();
if (ac != null) {
ac.setAccessibleName(s);
} else {
super.setAccessibleName(s);
}
}
//
// *** should check tooltip text for desc. (needs MouseEvent)
//
/**
* Get the accessible description of this object.
*
* @return the localized description of the object; null if
* this object does not have a description
*/
public String getAccessibleDescription() {
AccessibleContext ac = getCurrentAccessibleContext();
if (ac != null) {
return ac.getAccessibleDescription();
} else {
return super.getAccessibleDescription();
}
}
/**
* Set the accessible description of this object.
*
* @param s the new localized description of the object
*/
public void setAccessibleDescription(String s) {
AccessibleContext ac = getCurrentAccessibleContext();
if (ac != null) {
ac.setAccessibleDescription(s);
} else {
super.setAccessibleDescription(s);
}
}
/**
* Get the role of this object.
*
* @return an instance of AccessibleRole describing the role of the object
* @see AccessibleRole
*/
public AccessibleRole getAccessibleRole() {
AccessibleContext ac = getCurrentAccessibleContext();
if (ac != null) {
return ac.getAccessibleRole();
} else {
return AccessibleRole.UNKNOWN;
}
}
/**
* Get the state set of this object.
*
* @return an instance of AccessibleStateSet containing the
* current state set of the object
* @see AccessibleState
*/
public AccessibleStateSet getAccessibleStateSet() {
AccessibleContext ac = getCurrentAccessibleContext();
AccessibleStateSet states;
if (ac != null) {
states = ac.getAccessibleStateSet();
} else {
states = new AccessibleStateSet();
}
// need to test here, 'cause the underlying component
// is a cellRenderer, which is never showing...
if (isShowing()) {
states.add(AccessibleState.SHOWING);
} else if (states.contains(AccessibleState.SHOWING)) {
states.remove(AccessibleState.SHOWING);
}
if (isVisible()) {
states.add(AccessibleState.VISIBLE);
} else if (states.contains(AccessibleState.VISIBLE)) {
states.remove(AccessibleState.VISIBLE);
}
if (tree.isPathSelected(path)){
states.add(AccessibleState.SELECTED);
}
if (path == getLeadSelectionPath()) {
states.add(AccessibleState.ACTIVE);
}
if (!isLeaf) {
states.add(AccessibleState.EXPANDABLE);
}
if (tree.isExpanded(path)) {
states.add(AccessibleState.EXPANDED);
} else {
states.add(AccessibleState.COLLAPSED);
}
if (tree.isEditable()) {
states.add(AccessibleState.EDITABLE);
}
return states;
}
/**
* Get the Accessible parent of this object.
*
* @return the Accessible parent of this object; null if this
* object does not have an Accessible parent
*/
public Accessible getAccessibleParent() {
// someone wants to know, so we need to create our parent
// if we don't have one (hey, we're a talented kid!)
if (accessibleParent == null) {
Object[] objPath = path.getPath();
if (objPath.length > 1) {
Object objParent = objPath[objPath.length-2];
if (treeModel != null) {
index = treeModel.getIndexOfChild(objParent, obj);
}
Object[] objParentPath = new Object[objPath.length-1];
java.lang.System.arraycopy(objPath, 0, objParentPath,
0, objPath.length-1);
TreePath parentPath = new TreePath(objParentPath);
accessibleParent = new MyAccessibleJTreeNode(tree,
parentPath,
null);
this.setAccessibleParent(accessibleParent);
} else if (treeModel != null) {
accessibleParent = tree; // we're the top!
index = 0; // we're an only child!
this.setAccessibleParent(accessibleParent);
}
}
return accessibleParent;
}
/**
* Get the index of this object in its accessible parent.
*
* @return the index of this object in its parent; -1 if this
* object does not have an accessible parent.
* @see #getAccessibleParent
*/
public int getAccessibleIndexInParent() {
// index is invalid 'till we have an accessibleParent...
if (accessibleParent == null) {
getAccessibleParent();
}
Object[] objPath = path.getPath();
if (objPath.length > 1) {
Object objParent = objPath[objPath.length-2];
if (treeModel != null) {
index = treeModel.getIndexOfChild(objParent, obj);
}
}
return index;
}
/**
* Returns the number of accessible children in the object.
*
* @return the number of accessible children in the object.
*/
public int getAccessibleChildrenCount() {
// Tree nodes can't be so complex that they have
// two sets of children -> we're ignoring that case
return treeModel.getChildCount(obj);
}
/**
* Return the specified Accessible child of the object.
*
* @param i zero-based index of child
* @return the Accessible child of the object
*/
public Accessible getAccessibleChild(int i) {
// Tree nodes can't be so complex that they have
// two sets of children -> we're ignoring that case
if (i < 0 || i >= getAccessibleChildrenCount()) {
return null;
} else {
Object childObj = treeModel.getChild(obj, i);
Object[] objPath = path.getPath();
Object[] objChildPath = new Object[objPath.length+1];
java.lang.System.arraycopy(objPath, 0, objChildPath, 0, objPath.length);
objChildPath[objChildPath.length-1] = childObj;
TreePath childPath = new TreePath(objChildPath);
return new MyAccessibleJTreeNode(MyJTree.this, childPath, this);
}
}
/**
* Gets the locale of the component. If the component does not have
* a locale, then the locale of its parent is returned.
*
* @return This component's locale. If this component does not have
* a locale, the locale of its parent is returned.
* @throws IllegalComponentStateException
* If the Component does not have its own locale and has not yet
* been added to a containment hierarchy such that the locale can be
* determined from the containing parent.
* @see #setLocale
*/
public Locale getLocale() {
AccessibleContext ac = getCurrentAccessibleContext();
if (ac != null) {
return ac.getLocale();
} else {
return tree.getLocale();
}
}
/**
* Add a PropertyChangeListener to the listener list.
* The listener is registered for all properties.
*
* @param l The PropertyChangeListener to be added
*/
public void addPropertyChangeListener(PropertyChangeListener l) {
AccessibleContext ac = getCurrentAccessibleContext();
if (ac != null) {
ac.addPropertyChangeListener(l);
} else {
super.addPropertyChangeListener(l);
}
}
/**
* Remove a PropertyChangeListener from the listener list.
* This removes a PropertyChangeListener that was registered
* for all properties.
*
* @param l The PropertyChangeListener to be removed
*/
public void removePropertyChangeListener(PropertyChangeListener l) {
AccessibleContext ac = getCurrentAccessibleContext();
if (ac != null) {
ac.removePropertyChangeListener(l);
} else {
super.removePropertyChangeListener(l);
}
}
/**
* 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.
*
* @return this object
*/
public AccessibleAction getAccessibleAction() {
return this;
}
/**
* Get the AccessibleComponent associated with this object. In the
* implementation of the Java Accessibility API for this class,
* return this object, which is responsible for implementing the
* AccessibleComponent interface on behalf of itself.
*
* @return this object
*/
public AccessibleComponent getAccessibleComponent() {
return this; // to override getBounds()
}
/**
* Get the AccessibleSelection associated with this object if one
* exists. Otherwise return null.
*
* @return the AccessibleSelection, or null
*/
public AccessibleSelection getAccessibleSelection() {
AccessibleContext ac = getCurrentAccessibleContext();
if (ac != null && isLeaf) {
return getCurrentAccessibleContext().getAccessibleSelection();
} else {
return this;
}
}
/**
* Get the AccessibleText associated with this object if one
* exists. Otherwise return null.
*
* @return the AccessibleText, or null
*/
public AccessibleText getAccessibleText() {
AccessibleContext ac = getCurrentAccessibleContext();
if (ac != null) {
return getCurrentAccessibleContext().getAccessibleText();
} else {
return null;
}
}
/**
* Get the AccessibleValue associated with this object if one
* exists. Otherwise return null.
*
* @return the AccessibleValue, or null
*/
public AccessibleValue getAccessibleValue() {
AccessibleContext ac = getCurrentAccessibleContext();
if (ac != null) {
return getCurrentAccessibleContext().getAccessibleValue();
} else {
return null;
}
}
// AccessibleComponent methods
/**
* Get the background color of this object.
*
* @return the background color, if supported, of the object;
* otherwise, null
*/
public Color getBackground() {
AccessibleContext ac = getCurrentAccessibleContext();
if (ac instanceof AccessibleComponent) {
return ((AccessibleComponent) ac).getBackground();
} else {
Component c = getCurrentComponent();
if (c != null) {
return c.getBackground();
} else {
return null;
}
}
}
/**
* Set the background color of this object.
*
* @param c the new Color for the background
*/
public void setBackground(Color c) {
AccessibleContext ac = getCurrentAccessibleContext();
if (ac instanceof AccessibleComponent) {
((AccessibleComponent) ac).setBackground(c);
} else {
Component cp = getCurrentComponent();
if (cp != null) {
cp.setBackground(c);
}
}
}
/**
* Get the foreground color of this object.
*
* @return the foreground color, if supported, of the object;
* otherwise, null
*/
public Color getForeground() {
AccessibleContext ac = getCurrentAccessibleContext();
if (ac instanceof AccessibleComponent) {
return ((AccessibleComponent) ac).getForeground();
} else {
Component c = getCurrentComponent();
if (c != null) {
return c.getForeground();
} else {
return null;
}
}
}
public void setForeground(Color c) {
AccessibleContext ac = getCurrentAccessibleContext();
if (ac instanceof AccessibleComponent) {
((AccessibleComponent) ac).setForeground(c);
} else {
Component cp = getCurrentComponent();
if (cp != null) {
cp.setForeground(c);
}
}
}
public Cursor getCursor() {
AccessibleContext ac = getCurrentAccessibleContext();
if (ac instanceof AccessibleComponent) {
return ((AccessibleComponent) ac).getCursor();
} else {
Component c = getCurrentComponent();
if (c != null) {
return c.getCursor();
} else {
Accessible ap = getAccessibleParent();
if (ap instanceof AccessibleComponent) {
return ((AccessibleComponent) ap).getCursor();
} else {
return null;
}
}
}
}
public void setCursor(Cursor c) {
AccessibleContext ac = getCurrentAccessibleContext();
if (ac instanceof AccessibleComponent) {
((AccessibleComponent) ac).setCursor(c);
} else {
Component cp = getCurrentComponent();
if (cp != null) {
cp.setCursor(c);
}
}
}
public Font getFont() {
AccessibleContext ac = getCurrentAccessibleContext();
if (ac instanceof AccessibleComponent) {
return ((AccessibleComponent) ac).getFont();
} else {
Component c = getCurrentComponent();
if (c != null) {
return c.getFont();
} else {
return null;
}
}
}
public void setFont(Font f) {
AccessibleContext ac = getCurrentAccessibleContext();
if (ac instanceof AccessibleComponent) {
((AccessibleComponent) ac).setFont(f);
} else {
Component c = getCurrentComponent();
if (c != null) {
c.setFont(f);
}
}
}
public FontMetrics getFontMetrics(Font f) {
AccessibleContext ac = getCurrentAccessibleContext();
if (ac instanceof AccessibleComponent) {
return ((AccessibleComponent) ac).getFontMetrics(f);
} else {
Component c = getCurrentComponent();
if (c != null) {
return c.getFontMetrics(f);
} else {
return null;
}
}
}
public boolean isEnabled() {
AccessibleContext ac = getCurrentAccessibleContext();
if (ac instanceof AccessibleComponent) {
return ((AccessibleComponent) ac).isEnabled();
} else {
Component c = getCurrentComponent();
if (c != null) {
return c.isEnabled();
} else {
return false;
}
}
}
public void setEnabled(boolean b) {
AccessibleContext ac = getCurrentAccessibleContext();
if (ac instanceof AccessibleComponent) {
((AccessibleComponent) ac).setEnabled(b);
} else {
Component c = getCurrentComponent();
if (c != null) {
c.setEnabled(b);
}
}
}
public boolean isVisible() {
Rectangle pathBounds = tree.getPathBounds(path);
Rectangle parentBounds = tree.getVisibleRect();
return pathBounds != null && parentBounds != null &&
parentBounds.intersects(pathBounds);
}
public void setVisible(boolean b) {
}
public boolean isShowing() {
return (tree.isShowing() && isVisible());
}
public boolean contains(Point p) {
AccessibleContext ac = getCurrentAccessibleContext();
if (ac instanceof AccessibleComponent) {
Rectangle r = ((AccessibleComponent) ac).getBounds();
return r.contains(p);
} else {
Component c = getCurrentComponent();
if (c != null) {
Rectangle r = c.getBounds();
return r.contains(p);
} else {
return getBounds().contains(p);
}
}
}
public Point getLocationOnScreen() {
if (tree != null) {
Point treeLocation = tree.getLocationOnScreen();
Rectangle pathBounds = tree.getPathBounds(path);
if (treeLocation != null && pathBounds != null) {
Point nodeLocation = new Point(pathBounds.x,
pathBounds.y);
nodeLocation.translate(treeLocation.x, treeLocation.y);
return nodeLocation;
} else {
return null;
}
} else {
return null;
}
}
/**
* Returns the relative location of the node
*
* @return the relative location of the node
*/
protected Point getLocationInJTree() {
Rectangle r = tree.getPathBounds(path);
if (r != null) {
return r.getLocation();
} else {
return null;
}
}
public Point getLocation() {
Rectangle r = getBounds();
if (r != null) {
return r.getLocation();
} else {
return null;
}
}
public void setLocation(Point p) {
}
public Rectangle getBounds() {
Rectangle r = tree.getPathBounds(path);
Accessible parent = getAccessibleParent();
if (parent instanceof MyAccessibleJTreeNode treeNode) {
Point parentLoc = treeNode.getLocationInJTree();
if (parentLoc != null && r != null) {
r.translate(-parentLoc.x, -parentLoc.y);
} else {
return null; // not visible!
}
}
return r;
}
public void setBounds(Rectangle r) {
AccessibleContext ac = getCurrentAccessibleContext();
if (ac instanceof AccessibleComponent) {
((AccessibleComponent) ac).setBounds(r);
} else {
Component c = getCurrentComponent();
if (c != null) {
c.setBounds(r);
}
}
}
public Dimension getSize() {
return getBounds().getSize();
}
public void setSize (Dimension d) {
AccessibleContext ac = getCurrentAccessibleContext();
if (ac instanceof AccessibleComponent) {
((AccessibleComponent) ac).setSize(d);
} else {
Component c = getCurrentComponent();
if (c != null) {
c.setSize(d);
}
}
}
/**
* Returns the Accessible child, if one exists,
* contained at the local coordinate Point.
* Otherwise returns null.
*
* @param p point in local coordinates of this
* Accessible
* @return the Accessible, if it exists,
* at the specified location; else null
*/
public Accessible getAccessibleAt(Point p) {
AccessibleContext ac = getCurrentAccessibleContext();
if (ac instanceof AccessibleComponent) {
return ((AccessibleComponent) ac).getAccessibleAt(p);
} else {
return null;
}
}
@SuppressWarnings("deprecation")
public boolean isFocusTraversable() {
AccessibleContext ac = getCurrentAccessibleContext();
if (ac instanceof AccessibleComponent) {
return ((AccessibleComponent) ac).isFocusTraversable();
} else {
Component c = getCurrentComponent();
if (c != null) {
return c.isFocusTraversable();
} else {
return false;
}
}
}
public void requestFocus() {
AccessibleContext ac = getCurrentAccessibleContext();
if (ac instanceof AccessibleComponent) {
((AccessibleComponent) ac).requestFocus();
} else {
Component c = getCurrentComponent();
if (c != null) {
c.requestFocus();
}
}
}
public void addFocusListener(FocusListener l) {
AccessibleContext ac = getCurrentAccessibleContext();
if (ac instanceof AccessibleComponent) {
((AccessibleComponent) ac).addFocusListener(l);
} else {
Component c = getCurrentComponent();
if (c != null) {
c.addFocusListener(l);
}
}
}
public void removeFocusListener(FocusListener l) {
AccessibleContext ac = getCurrentAccessibleContext();
if (ac instanceof AccessibleComponent) {
((AccessibleComponent) ac).removeFocusListener(l);
} else {
Component c = getCurrentComponent();
if (c != null) {
c.removeFocusListener(l);
}
}
}
// AccessibleSelection methods
/**
* Returns the number of items currently selected.
* If no items are selected, the return value will be 0.
*
* @return the number of items currently selected.
*/
public int getAccessibleSelectionCount() {
int count = 0;
int childCount = getAccessibleChildrenCount();
for (int i = 0; i < childCount; i++) {
TreePath childPath = getChildTreePath(i);
if (tree.isPathSelected(childPath)) {
count++;
}
}
return count;
}
/**
* 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.
*
* @param i the zero-based index of selected items
* @return an Accessible containing the selected item
*/
public Accessible getAccessibleSelection(int i) {
int childCount = getAccessibleChildrenCount();
if (i < 0 || i >= childCount) {
return null; // out of range
}
int count = 0;
for (int j = 0; j < childCount && i >= count; j++) {
TreePath childPath = getChildTreePath(j);
if (tree.isPathSelected(childPath)) {
if (count == i) {
return new MyAccessibleJTreeNode(tree, childPath, this);
} else {
count++;
}
}
}
return null;
}
/**
* Returns true if the current child of this object is selected.
*
* @param i the zero-based index of the child in this Accessible
* object.
* @see AccessibleContext#getAccessibleChild
*/
public boolean isAccessibleChildSelected(int i) {
int childCount = getAccessibleChildrenCount();
if (i < 0 || i >= childCount) {
return false; // out of range
} else {
TreePath childPath = getChildTreePath(i);
return tree.isPathSelected(childPath);
}
}
/**
* 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.
*
* @param i the zero-based index of selectable items
*/
public void addAccessibleSelection(int i) {
TreeModel model = MyJTree.this.getModel();
if (model != null) {
if (i >= 0 && i < getAccessibleChildrenCount()) {
TreePath path = getChildTreePath(i);
MyJTree.this.addSelectionPath(path);
}
}
}
/**
* 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.
*
* @param i the zero-based index of selectable items
*/
public void removeAccessibleSelection(int i) {
TreeModel model = MyJTree.this.getModel();
if (model != null) {
if (i >= 0 && i < getAccessibleChildrenCount()) {
TreePath path = getChildTreePath(i);
MyJTree.this.removeSelectionPath(path);
}
}
}
/**
* Clears the selection in the object, so that nothing in the
* object is selected.
*/
public void clearAccessibleSelection() {
int childCount = getAccessibleChildrenCount();
for (int i = 0; i < childCount; i++) {
removeAccessibleSelection(i);
}
}
/**
* Causes every selected item in the object to be selected
* if the object supports multiple selections.
*/
public void selectAllAccessibleSelection() {
TreeModel model = MyJTree.this.getModel();
if (model != null) {
int childCount = getAccessibleChildrenCount();
TreePath path;
for (int i = 0; i < childCount; i++) {
path = getChildTreePath(i);
MyJTree.this.addSelectionPath(path);
}
}
}
// AccessibleAction methods
/**
* Returns the number of accessible actions available in this
* tree node. If this node is not a leaf, there is at least
* one action (toggle expand), in addition to any available
* on the object behind the TreeCellRenderer.
*
* @return the number of Actions in this object
*/
public int getAccessibleActionCount() {
AccessibleContext ac = getCurrentAccessibleContext();
if (ac != null) {
AccessibleAction aa = ac.getAccessibleAction();
if (aa != null) {
return (aa.getAccessibleActionCount() + (isLeaf ? 0 : 1));
}
}
return isLeaf ? 0 : 1;
}
/**
* Return a description of the specified action of the tree node.
* If this node is not a leaf, there is at least one action
* description (toggle expand), in addition to any available
* on the object behind the TreeCellRenderer.
*
* @param i zero-based index of the actions
* @return a description of the action
*/
public String getAccessibleActionDescription(int i) {
if (i < 0 || i >= getAccessibleActionCount()) {
return null;
}
AccessibleContext ac = getCurrentAccessibleContext();
if (i == 0) {
// TIGER - 4766636
return AccessibleAction.TOGGLE_EXPAND;
} else if (ac != null) {
AccessibleAction aa = ac.getAccessibleAction();
if (aa != null) {
return aa.getAccessibleActionDescription(i - 1);
}
}
return null;
}
/**
* Perform the specified Action on the tree node. If this node
* is not a leaf, there is at least one action which can be
* done (toggle expand), in addition to any available on the
* object behind the TreeCellRenderer.
*
* @param i zero-based index of actions
* @return true if the action was performed; else false.
*/
public boolean doAccessibleAction(int i) {
if (i < 0 || i >= getAccessibleActionCount()) {
return false;
}
AccessibleContext ac = getCurrentAccessibleContext();
if (i == 0) {
if (MyJTree.this.isExpanded(path)) {
MyJTree.this.collapsePath(path);
} else {
MyJTree.this.expandPath(path);
}
return true;
} else if (ac != null) {
AccessibleAction aa = ac.getAccessibleAction();
if (aa != null) {
return aa.doAccessibleAction(i - 1);
}
}
return false;
}
} // inner class AccessibleJTreeNode
} // inner class AccessibleJTree
}