org.jdesktop.swingx.JXTree Maven / Gradle / Ivy
/*
* $Id: JXTree.java 3751 2010-08-08 04:07:44Z kschaefe $
*
* Copyright 2004 Sun Microsystems, Inc., 4150 Network Circle,
* Santa Clara, California 95054, U.S.A. All rights reserved.
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
*/
package org.jdesktop.swingx;
import java.applet.Applet;
import java.awt.Color;
import java.awt.Component;
import java.awt.KeyboardFocusManager;
import java.awt.Rectangle;
import java.awt.Window;
import java.awt.event.ActionEvent;
import java.beans.PropertyChangeEvent;
import java.beans.PropertyChangeListener;
import java.util.Hashtable;
import java.util.Vector;
import java.util.logging.Logger;
import javax.swing.Action;
import javax.swing.ActionMap;
import javax.swing.CellEditor;
import javax.swing.Icon;
import javax.swing.JComponent;
import javax.swing.JPopupMenu;
import javax.swing.JTree;
import javax.swing.KeyStroke;
import javax.swing.SwingUtilities;
import javax.swing.UIManager;
import javax.swing.event.CellEditorListener;
import javax.swing.event.ChangeEvent;
import javax.swing.event.ChangeListener;
import javax.swing.event.TreeModelEvent;
import javax.swing.event.TreeModelListener;
import javax.swing.plaf.basic.BasicTreeUI;
import javax.swing.tree.DefaultTreeCellRenderer;
import javax.swing.tree.TreeCellRenderer;
import javax.swing.tree.TreeModel;
import javax.swing.tree.TreeNode;
import javax.swing.tree.TreePath;
import org.jdesktop.swingx.decorator.ComponentAdapter;
import org.jdesktop.swingx.decorator.CompoundHighlighter;
import org.jdesktop.swingx.decorator.Highlighter;
import org.jdesktop.swingx.plaf.UIDependent;
import org.jdesktop.swingx.renderer.StringValue;
import org.jdesktop.swingx.renderer.StringValues;
import org.jdesktop.swingx.rollover.RolloverProducer;
import org.jdesktop.swingx.rollover.RolloverRenderer;
import org.jdesktop.swingx.rollover.TreeRolloverController;
import org.jdesktop.swingx.rollover.TreeRolloverProducer;
import org.jdesktop.swingx.search.SearchFactory;
import org.jdesktop.swingx.search.Searchable;
import org.jdesktop.swingx.search.TreeSearchable;
import org.jdesktop.swingx.tree.DefaultXTreeCellEditor;
import org.jdesktop.swingx.tree.DefaultXTreeCellRenderer;
/**
* Enhanced Tree component with support for SwingX rendering, highlighting,
* rollover and search functionality.
*
*
*
Rendering and Highlighting
*
* As all SwingX collection views, a JXTree is a HighlighterClient (PENDING JW:
* formally define and implement, like in AbstractTestHighlighter), that is it
* provides consistent api to add and remove Highlighters which can visually
* decorate the rendering component.
*
*
*
*
* JXTree tree = new JXTree(new FileSystemModel());
* // use system file icons and name to render
* tree.setCellRenderer(new DefaultTreeRenderer(IconValues.FILE_ICON,
* StringValues.FILE_NAME));
* // highlight condition: file modified after a date
* HighlightPredicate predicate = new HighlightPredicate() {
* public boolean isHighlighted(Component renderer,
* ComponentAdapter adapter) {
* File file = getUserObject(adapter.getValue());
* return file != null ? lastWeek < file.lastModified : false;
* }
* };
* // highlight with foreground color
* tree.addHighlighter(new ColorHighlighter(predicate, null, Color.RED);
*
*
*
* Note: for full functionality, a DefaultTreeRenderer must be installed
* as TreeCellRenderer. This is not done by default, because there are
* unresolved issues when editing. PENDING JW: still? Check!
*
* Note: to support the highlighting this implementation wraps the
* TreeCellRenderer set by client code with a DelegatingRenderer which applies
* the Highlighter after delegating the default configuration to the wrappee. As
* a side-effect, getCellRenderer does return the wrapper instead of the custom
* renderer. To access the latter, client code must call getWrappedCellRenderer.
*
*
Rollover
*
* As all SwingX collection views, a JXTree supports per-cell rollover. If
* enabled, the component fires rollover events on enter/exit of a cell which by
* default is promoted to the renderer if it implements RolloverRenderer, that
* is simulates live behaviour. The rollover events can be used by client code
* as well, f.i. to decorate the rollover row using a Highlighter.
*
*
*
* JXTree tree = new JXTree();
* tree.setRolloverEnabled(true);
* tree.setCellRenderer(new DefaultTreeRenderer());
* tree.addHighlighter(new ColorHighlighter(HighlightPredicate.ROLLOVER_ROW,
* null, Color.RED);
*
*
*
*
* Search
*
* As all SwingX collection views, a JXTree is searchable. A search action is
* registered in its ActionMap under the key "find". The default behaviour is to
* ask the SearchFactory to open a search component on this component. The
* default keybinding is retrieved from the SearchFactory, typically ctrl-f (or
* cmd-f for Mac). Client code can register custom actions and/or bindings as
* appropriate.
*
*
* JXTree provides api to vend a renderer-controlled String representation of
* cell content. This allows the Searchable and Highlighters to use WYSIWYM
* (What-You-See-Is-What-You-Match), that is pattern matching against the actual
* string as seen by the user.
*
*
Miscellaneous
*
*
* - Improved usability for editing: guarantees that the tree is the
* focusOwner if editing terminated by user gesture and guards against data
* corruption if focusLost while editing
*
- Access methods for selection colors, for consistency with JXTable,
* JXList
*
- Convenience methods and actions to expand, collapse all nodes
*
*
* @author Ramesh Gupta
* @author Jeanette Winzenburg
*
* @see org.jdesktop.swingx.renderer.DefaultTreeRenderer
* @see org.jdesktop.swingx.renderer.ComponentProvider
* @see org.jdesktop.swingx.decorator.Highlighter
* @see org.jdesktop.swingx.decorator.HighlightPredicate
* @see org.jdesktop.swingx.search.SearchFactory
* @see org.jdesktop.swingx.search.Searchable
*
*/
public class JXTree extends JTree {
@SuppressWarnings("unused")
private static final Logger LOG = Logger.getLogger(JXTree.class.getName());
/** Empty int array used in getSelectedRows(). */
private static final int[] EMPTY_INT_ARRAY = new int[0];
/** Empty TreePath used in getSelectedPath() if selection empty. */
private static final TreePath[] EMPTY_TREEPATH_ARRAY = new TreePath[0];
/** Collection of active Highlighters. */
protected CompoundHighlighter compoundHighlighter;
/** Listener to changes of Highlighters in collection. */
private ChangeListener highlighterChangeListener;
/** Wrapper around the installed renderer, needed to support Highlighters. */
private DelegatingRenderer delegatingRenderer;
/**
* The RolloverProducer used if rollover is enabled.
*/
private RolloverProducer rolloverProducer;
/**
* The RolloverController used if rollover is enabled.
*/
private TreeRolloverController linkController;
private boolean overwriteIcons;
private Searchable searchable;
// hacks around core focus issues around editing.
/**
* The propertyChangeListener responsible for terminating
* edits if focus lost.
*/
private CellEditorRemover editorRemover;
/**
* The CellEditorListener responsible to force the
* focus back to the tree after terminating edits.
*/
private CellEditorListener editorListener;
/** Color of selected foreground. Added for consistent api across collection components. */
private Color selectionForeground;
/** Color of selected background. Added for consistent api across collection components. */
private Color selectionBackground;
/**
* Constructs a JXTree with a sample model. The default model
* used by this tree defines a leaf node as any node without children.
*/
public JXTree() {
init();
}
/**
* Constructs a JXTree with each element of the specified array
* as the child of a new root node which is not displayed. By default, this
* tree defines a leaf node as any node without children.
*
* This version of the constructor simply invokes the super class version
* with the same arguments.
*
* @param value an array of objects that are children of the root.
*/
public JXTree(Object[] value) {
super(value);
init();
}
/**
* Constructs a JXTree with each element of the specified
* Vector as the child of a new root node which is not displayed.
* By default, this tree defines a leaf node as any node without children.
*
* This version of the constructor simply invokes the super class version
* with the same arguments.
*
* @param value an Vector of objects that are children of the root.
*/
public JXTree(Vector value) {
super(value);
init();
}
/**
* Constructs a JXTree created from a Hashtable which does not
* display with root. Each value-half of the key/value pairs in the HashTable
* becomes a child of the new root node. By default, the tree defines a leaf
* node as any node without children.
*
* This version of the constructor simply invokes the super class version
* with the same arguments.
*
* @param value a Hashtable containing objects that are children of the root.
*/
public JXTree(Hashtable value) {
super(value);
init();
}
/**
* Constructs a JXTree with the specified TreeNode as its root,
* which displays the root node. By default, the tree defines a leaf node as
* any node without children.
*
* This version of the constructor simply invokes the super class version
* with the same arguments.
*
* @param root root node of this tree
*/
public JXTree(TreeNode root) {
super(root, false);
init();
}
/**
* Constructs a JXTree with the specified TreeNode as its root,
* which displays the root node and which decides whether a node is a leaf
* node in the specified manner.
*
* This version of the constructor simply invokes the super class version
* with the same arguments.
*
* @param root root node of this tree
* @param asksAllowsChildren if true, only nodes that do not allow children
* are leaf nodes; otherwise, any node without children is a leaf node;
* @see javax.swing.tree.DefaultTreeModel#asksAllowsChildren
*/
public JXTree(TreeNode root, boolean asksAllowsChildren) {
super(root, asksAllowsChildren);
init();
}
/**
* Constructs an instance of JXTree which displays the root
* node -- the tree is created using the specified data model.
*
* This version of the constructor simply invokes the super class version
* with the same arguments.
*
* @param newModel
* the TreeModel to use as the data model
*/
public JXTree(TreeModel newModel) {
super(newModel);
init();
}
/**
* Instantiates JXTree state which is new compared to super. Installs the
* Delegating renderer and editor, registers actions and keybindings.
*
* This must be called from each constructor.
*/
private void init() {
// Issue #1061-swingx: renderer inconsistencies
// force setting of renderer
setCellRenderer(createDefaultCellRenderer());
// Issue #233-swingx: default editor not bidi-compliant
// manually install an enhanced TreeCellEditor which
// behaves slightly better in RtoL orientation.
// Issue #231-swingx: icons lost
// Anyway, need to install the editor manually because
// the default install in BasicTreeUI doesn't know about
// the DelegatingRenderer and therefore can't see
// the DefaultTreeCellRenderer type to delegate to.
// As a consequence, the icons are lost in the default
// setup.
// JW PENDING need to mimic ui-delegate default re-set?
// JW PENDING alternatively, cleanup and use DefaultXXTreeCellEditor in incubator
if (getWrappedCellRenderer() instanceof DefaultTreeCellRenderer) {
setCellEditor(new DefaultXTreeCellEditor(this, (DefaultTreeCellRenderer) getWrappedCellRenderer()));
}
// Register the actions that this class can handle.
ActionMap map = getActionMap();
map.put("expand-all", new Actions("expand-all"));
map.put("collapse-all", new Actions("collapse-all"));
map.put("find", createFindAction());
KeyStroke findStroke = SearchFactory.getInstance().getSearchAccelerator();
getInputMap(JComponent.WHEN_ANCESTOR_OF_FOCUSED_COMPONENT).put(findStroke, "find");
}
/**
* Listens to the model and updates the {@code expandedState} accordingly
* when nodes are removed, or changed.
*
* This class will expand an invisible root when a child has been added to
* it.
*
* @author Karl George Schaefer
*/
protected class XTreeModelHandler extends TreeModelHandler {
/**
* {@inheritDoc}
*/
@Override
public void treeNodesInserted(TreeModelEvent e) {
TreePath path = e.getTreePath();
//fixes SwingX bug #612
if (path.getParentPath() == null && !isRootVisible() && isCollapsed(path)) {
//should this be wrapped in SwingUtilities.invokeLater?
expandPath(path);
}
super.treeNodesInserted(e);
}
}
/**
* {@inheritDoc}
*/
@Override
protected TreeModelListener createTreeModelListener() {
return new XTreeModelHandler();
}
/**
* A small class which dispatches actions.
* TODO: Is there a way that we can make this static?
*/
private class Actions extends UIAction {
Actions(String name) {
super(name);
}
public void actionPerformed(ActionEvent evt) {
if ("expand-all".equals(getName())) {
expandAll();
}
else if ("collapse-all".equals(getName())) {
collapseAll();
}
}
}
//-------------------- search support
/**
* Creates and returns the action to invoke on a find request.
*
* @return the action to invoke on a find request.
*/
private Action createFindAction() {
return new UIAction("find") {
public void actionPerformed(ActionEvent e) {
doFind();
}
};
}
/**
* Starts a search on this Tree's visible nodes. This implementation asks the
* SearchFactory to open a find widget on itself.
*/
protected void doFind() {
SearchFactory.getInstance().showFindInput(this, getSearchable());
}
/**
* Returns a Searchable for this component, guaranteed to be not null. This
* implementation lazily creates a TreeSearchable if necessary.
*
*
* @return a not-null Searchable for this component.
*
* @see #setSearchable(Searchable)
* @see org.jdesktop.swingx.search.TreeSearchable
*/
public Searchable getSearchable() {
if (searchable == null) {
searchable = new TreeSearchable(this);
}
return searchable;
}
/**
* Sets the Searchable for this component. If null, a default
* Searchable will be created and used.
*
* @param searchable the Searchable to use for this component, may be null to
* indicate using the default.
*
* @see #getSearchable()
*/
public void setSearchable(Searchable searchable) {
this.searchable = searchable;
}
/**
* Returns the string representation of the cell value at the given position.
*
* @param row the row index of the cell in view coordinates
* @return the string representation of the cell value as it will appear in the
* table.
*/
public String getStringAt(int row) {
return getStringAt(getPathForRow(row));
}
/**
* Returns the string representation of the cell value at the given position.
*
* @param path the TreePath representing the node.
* @return the string representation of the cell value as it will appear in the
* table, or null if the path is not visible.
*/
public String getStringAt(TreePath path) {
if (path == null) return null;
TreeCellRenderer renderer = getDelegatingRenderer().getDelegateRenderer();
if (renderer instanceof StringValue) {
return ((StringValue) renderer).getString(path.getLastPathComponent());
}
return StringValues.TO_STRING.getString(path.getLastPathComponent());
}
//--------------------- misc. new api and super overrides
/**
* Collapses all nodes in this tree.
*/
public void collapseAll() {
for (int i = getRowCount() - 1; i >= 0 ; i--) {
collapseRow(i);
}
}
/**
* Expands all nodes in this tree.
*/
public void expandAll() {
if (getRowCount() == 0) {
expandRoot();
}
for (int i = 0; i < getRowCount(); i++) {
expandRow(i);
}
}
/**
* Expands the root path if a TreeModel has been set, does nothing if not.
*
*/
private void expandRoot() {
TreeModel model = getModel();
if (model != null && model.getRoot() != null) {
expandPath(new TreePath(model.getRoot()));
}
}
/**
* {@inheritDoc}
*
*
* Overridden to always return a not-null array (following SwingX
* convention).
*/
@Override
public int[] getSelectionRows() {
int[] rows = super.getSelectionRows();
return rows != null ? rows : EMPTY_INT_ARRAY;
}
/**
* {@inheritDoc}
*
*
* Overridden to always return a not-null array (following SwingX
* convention).
*/
@Override
public TreePath[] getSelectionPaths() {
TreePath[] paths = super.getSelectionPaths();
return paths != null ? paths : EMPTY_TREEPATH_ARRAY;
}
/**
* Returns the background color for selected cells.
*
* @return the Color used for the background of
* selected list items
* @see #setSelectionBackground
* @see #setSelectionForeground
*/
public Color getSelectionBackground() {
return selectionBackground;
}
/**
* Returns the selection foreground color.
*
* @return the Color object for the foreground property
* @see #setSelectionForeground
* @see #setSelectionBackground
*/
public Color getSelectionForeground() {
return selectionForeground;
}
/**
* Sets the foreground color for selected cells. Cell renderers
* can use this color to render text and graphics for selected
* cells.
*
* The default value of this property is defined by the look
* and feel implementation.
*
* This is a JavaBeans bound property.
*
* @param selectionForeground the Color to use in the foreground
* for selected list items
* @see #getSelectionForeground
* @see #setSelectionBackground
* @see #setForeground
* @see #setBackground
* @see #setFont
* @beaninfo
* bound: true
* attribute: visualUpdate true
* description: The foreground color of selected cells.
*/
public void setSelectionForeground(Color selectionForeground) {
Object oldValue = getSelectionForeground();
this.selectionForeground = selectionForeground;
firePropertyChange("selectionForeground", oldValue, getSelectionForeground());
repaint();
}
/**
* Sets the background color for selected cells. Cell renderers
* can use this color to the fill selected cells.
*
* The default value of this property is defined by the look
* and feel implementation.
*
* This is a JavaBeans bound property.
*
* @param selectionBackground the Color to use for the
* background of selected cells
* @see #getSelectionBackground
* @see #setSelectionForeground
* @see #setForeground
* @see #setBackground
* @see #setFont
* @beaninfo
* bound: true
* attribute: visualUpdate true
* description: The background color of selected cells.
*/
public void setSelectionBackground(Color selectionBackground) {
Object oldValue = getSelectionBackground();
this.selectionBackground = selectionBackground;
firePropertyChange("selectionBackground", oldValue, getSelectionBackground());
repaint();
}
//------------------------- update ui
/**
* {@inheritDoc}
*
* Overridden to update selection background/foreground. Mimicking behaviour of
* ui-delegates for JTable, JList.
*/
@Override
public void updateUI() {
uninstallSelectionColors();
super.updateUI();
installSelectionColors();
updateHighlighterUI();
updateRendererEditorUI();
invalidateCellSizeCache();
}
/**
* Quick fix for #1060-swingx: icons lost on toggling LAF
*/
protected void updateRendererEditorUI() {
if (getCellEditor() instanceof UIDependent) {
((UIDependent) getCellEditor()).updateUI();
}
// PENDING JW: here we get the DelegationRenderer which is not (yet) UIDependent
// need to think about how to handle the per-tree icons
// anyway, the "real" renderer usually is updated accidentally
// don't know exactly why, added to the comp hierarchy?
// if (getCellRenderer() instanceof UIDependent) {
// ((UIDependent) getCellRenderer()).updateUI();
// }
}
/**
* Installs selection colors from UIManager.
*
* Note: this should be done in the UI delegate.
*/
private void installSelectionColors() {
if (SwingXUtilities.isUIInstallable(getSelectionBackground())) {
setSelectionBackground(UIManager.getColor("Tree.selectionBackground"));
}
if (SwingXUtilities.isUIInstallable(getSelectionForeground())) {
setSelectionForeground(UIManager.getColor("Tree.selectionForeground"));
}
}
/**
* Uninstalls selection colors.
*
* Note: this should be done in the UI delegate.
*/
private void uninstallSelectionColors() {
if (SwingXUtilities.isUIInstallable(getSelectionBackground())) {
setSelectionBackground(null);
}
if (SwingXUtilities.isUIInstallable(getSelectionForeground())) {
setSelectionForeground(null);
}
}
/**
* Updates highlighter after updateUI changes.
*
* @see org.jdesktop.swingx.plaf.UIDependent
*/
protected void updateHighlighterUI() {
if (compoundHighlighter == null) return;
compoundHighlighter.updateUI();
}
//------------------------ Rollover support
/**
* Sets the property to enable/disable rollover support. If enabled, the list
* fires property changes on per-cell mouse rollover state, i.e.
* when the mouse enters/leaves a list cell.
*
* This can be enabled to show "live" rollover behaviour, f.i. the cursor over a cell
* rendered by a JXHyperlink.
*
* The default value is false.
*
* @param rolloverEnabled a boolean indicating whether or not the rollover
* functionality should be enabled.
*
* @see #isRolloverEnabled()
* @see #getLinkController()
* @see #createRolloverProducer()
* @see org.jdesktop.swingx.rollover.RolloverRenderer
*/
public void setRolloverEnabled(boolean rolloverEnabled) {
boolean old = isRolloverEnabled();
if (rolloverEnabled == old) return;
if (rolloverEnabled) {
rolloverProducer = createRolloverProducer();
rolloverProducer.install(this);
getLinkController().install(this);
} else {
rolloverProducer.release(this);
rolloverProducer = null;
getLinkController().release();
}
firePropertyChange("rolloverEnabled", old, isRolloverEnabled());
}
/**
* Returns a boolean indicating whether or not rollover support is enabled.
*
* @return a boolean indicating whether or not rollover support is enabled.
*
* @see #setRolloverEnabled(boolean)
*/
public boolean isRolloverEnabled() {
return rolloverProducer != null;
}
/**
* Returns the RolloverController for this component. Lazyly creates the
* controller if necessary, that is the return value is guaranteed to be
* not null.
*
* PENDING JW: rename to getRolloverController
*
* @return the RolloverController for this tree, guaranteed to be not null.
*
* @see #setRolloverEnabled(boolean)
* @see #createLinkController()
* @see org.jdesktop.swingx.rollover.RolloverController
*/
protected TreeRolloverController getLinkController() {
if (linkController == null) {
linkController = createLinkController();
}
return linkController;
}
/**
* Creates and returns a RolloverController appropriate for this tree.
*
* @return a RolloverController appropriate for this tree.
*
* @see #getLinkController()
* @see org.jdesktop.swingx.rollover.RolloverController
*/
protected TreeRolloverController createLinkController() {
return new TreeRolloverController();
}
/**
* Creates and returns the RolloverProducer to use with this tree.
*
*
* @return RolloverProducer to use with this tree
*
* @see #setRolloverEnabled(boolean)
*/
protected RolloverProducer createRolloverProducer() {
return new TreeRolloverProducer();
}
//----------------------- Highlighter api
/**
* Sets the Highlighters to the table, replacing any old settings.
* None of the given Highlighters must be null.
*
* This is a bound property.
*
* Note: as of version #1.257 the null constraint is enforced strictly. To remove
* all highlighters use this method without param.
*
* @param highlighters zero or more not null highlighters to use for renderer decoration.
* @throws NullPointerException if array is null or array contains null values.
*
* @see #getHighlighters()
* @see #addHighlighter(Highlighter)
* @see #removeHighlighter(Highlighter)
*
*/
public void setHighlighters(Highlighter... highlighters) {
Highlighter[] old = getHighlighters();
getCompoundHighlighter().setHighlighters(highlighters);
firePropertyChange("highlighters", old, getHighlighters());
}
/**
* Returns the Highlighters used by this table.
* Maybe empty, but guarantees to be never null.
*
* @return the Highlighters used by this table, guaranteed to never null.
* @see #setHighlighters(Highlighter[])
*/
public Highlighter[] getHighlighters() {
return getCompoundHighlighter().getHighlighters();
}
/**
* Appends a Highlighter to the end of the list of used
* Highlighters. The argument must not be null.
*
*
* @param highlighter the Highlighter to add, must not be null.
* @throws NullPointerException if Highlighter is null.
*
* @see #removeHighlighter(Highlighter)
* @see #setHighlighters(Highlighter[])
*/
public void addHighlighter(Highlighter highlighter) {
Highlighter[] old = getHighlighters();
getCompoundHighlighter().addHighlighter(highlighter);
firePropertyChange("highlighters", old, getHighlighters());
}
/**
* Removes the given Highlighter.
*
* Does nothing if the Highlighter is not contained.
*
* @param highlighter the Highlighter to remove.
* @see #addHighlighter(Highlighter)
* @see #setHighlighters(Highlighter...)
*/
public void removeHighlighter(Highlighter highlighter) {
Highlighter[] old = getHighlighters();
getCompoundHighlighter().removeHighlighter(highlighter);
firePropertyChange("highlighters", old, getHighlighters());
}
/**
* Returns the CompoundHighlighter assigned to the table, null if none.
* PENDING: open up for subclasses again?.
*
* @return the CompoundHighlighter assigned to the table.
*/
protected CompoundHighlighter getCompoundHighlighter() {
if (compoundHighlighter == null) {
compoundHighlighter = new CompoundHighlighter();
compoundHighlighter.addChangeListener(getHighlighterChangeListener());
}
return compoundHighlighter;
}
/**
* Returns the ChangeListener to use with highlighters. Lazily
* creates the listener.
*
* @return the ChangeListener for observing changes of highlighters,
* guaranteed to be not-null
*/
protected ChangeListener getHighlighterChangeListener() {
if (highlighterChangeListener == null) {
highlighterChangeListener = createHighlighterChangeListener();
}
return highlighterChangeListener;
}
/**
* Creates and returns the ChangeListener observing Highlighters.
*
* Here: repaints the table on receiving a stateChanged.
*
* @return the ChangeListener defining the reaction to changes of
* highlighters.
*/
protected ChangeListener createHighlighterChangeListener() {
return new ChangeListener() {
public void stateChanged(ChangeEvent e) {
repaint();
}
};
}
/**
* Sets the Icon to use for the handle of an expanded node.
*
* Note: this will only succeed if the current ui delegate is
* a BasicTreeUI otherwise it will do nothing.
*
* PENDING JW: incomplete api (no getter) and not a bound property.
*
* @param expandedIcon the Icon to use for the handle of an expanded node.
*/
public void setExpandedIcon(Icon expandedIcon) {
if (getUI() instanceof BasicTreeUI) {
((BasicTreeUI) getUI()).setExpandedIcon(expandedIcon);
}
}
/**
* Sets the Icon to use for the handle of a collapsed node.
*
* Note: this will only succeed if the current ui delegate is
* a BasicTreeUI otherwise it will do nothing.
*
* PENDING JW: incomplete api (no getter) and not a bound property.
*
* @param collapsedIcon the Icon to use for the handle of a collapsed node.
*/
public void setCollapsedIcon(Icon collapsedIcon) {
if (getUI() instanceof BasicTreeUI) {
((BasicTreeUI) getUI()).setCollapsedIcon(collapsedIcon);
}
}
/**
* Sets the Icon to use for a leaf node.
*
* Note: this will only succeed if current renderer is a
* DefaultTreeCellRenderer.
*
* PENDING JW: this (all setXXIcon) is old api pulled up from the JXTreeTable.
* Need to review if we really want it - problematic if sharing the same
* renderer instance across different trees.
*
* PENDING JW: incomplete api (no getter) and not a bound property.
*
* @param leafIcon the Icon to use for a leaf node.
*/
public void setLeafIcon(Icon leafIcon) {
getDelegatingRenderer().setLeafIcon(leafIcon);
}
/**
* Sets the Icon to use for an open folder node.
*
* Note: this will only succeed if current renderer is a
* DefaultTreeCellRenderer.
*
* PENDING JW: incomplete api (no getter) and not a bound property.
*
* @param openIcon the Icon to use for an open folder node.
*/
public void setOpenIcon(Icon openIcon) {
getDelegatingRenderer().setOpenIcon(openIcon);
}
/**
* Sets the Icon to use for a closed folder node.
*
* Note: this will only succeed if current renderer is a
* DefaultTreeCellRenderer.
*
* PENDING JW: incomplete api (no getter) and not a bound property.
*
* @param closedIcon the Icon to use for a closed folder node.
*/
public void setClosedIcon(Icon closedIcon) {
getDelegatingRenderer().setClosedIcon(closedIcon);
}
/**
* Property to control whether per-tree icons should be
* copied to the renderer on setCellRenderer.
*
* The default value is false.
*
* PENDING: should update the current renderer's icons when
* setting to true?
*
* @param overwrite a boolean to indicate if the per-tree Icons should
* be copied to the new renderer on setCellRenderer.
*
* @see #isOverwriteRendererIcons()
* @see #setLeafIcon(Icon)
* @see #setOpenIcon(Icon)
* @see #setClosedIcon(Icon)
*/
public void setOverwriteRendererIcons(boolean overwrite) {
if (overwriteIcons == overwrite) return;
boolean old = overwriteIcons;
this.overwriteIcons = overwrite;
firePropertyChange("overwriteRendererIcons", old, overwrite);
}
/**
* Returns a boolean indicating whether the per-tree icons should be
* copied to the renderer on setCellRenderer.
*
* @return true if a TreeCellRenderer's icons will be overwritten with the
* tree's Icons, false if the renderer's icons will be unchanged.
*
* @see #setOverwriteRendererIcons(boolean)
* @see #setLeafIcon(Icon)
* @see #setOpenIcon(Icon)
* @see #setClosedIcon(Icon)
*
*/
public boolean isOverwriteRendererIcons() {
return overwriteIcons;
}
private DelegatingRenderer getDelegatingRenderer() {
if (delegatingRenderer == null) {
// only called once... to get hold of the default?
delegatingRenderer = new DelegatingRenderer();
}
return delegatingRenderer;
}
/**
* Creates and returns the default cell renderer to use. Subclasses may
* override to use a different type.
*
*
* This implementation returns a renderer of type
* DefaultTreeCellRenderer. Note: Will be changed to
* return a renderer of type DefaultTreeRenderer,
* once WrappingProvider is reasonably stable.
*
* @return the default cell renderer to use with this tree.
*/
protected TreeCellRenderer createDefaultCellRenderer() {
// return new DefaultTreeCellRenderer();
return new DefaultXTreeCellRenderer();
}
/**
* {@inheritDoc}
*
* Overridden to return the delegating renderer which is wrapped around the
* original to support highlighting. The returned renderer is of type
* DelegatingRenderer and guaranteed to not-null
*
* @see #setCellRenderer(TreeCellRenderer)
* @see DelegatingRenderer
*/
@Override
public TreeCellRenderer getCellRenderer() {
// PENDING JW: something wrong here - why exactly can't we return super?
// not even if we force the initial setting in init?
// return super.getCellRenderer();
return getDelegatingRenderer();
}
/**
* Returns the renderer installed by client code or the default if none has
* been set.
*
* @return the wrapped renderer.
* @see #setCellRenderer(TreeCellRenderer)
*/
public TreeCellRenderer getWrappedCellRenderer() {
return getDelegatingRenderer().getDelegateRenderer();
}
/**
* {@inheritDoc}
*
* Overridden to wrap the given renderer in a DelegatingRenderer to support
* highlighting.
*
* Note: the wrapping implies that the renderer returned from the getCellRenderer
* is not the renderer as given here, but the wrapper. To access the original,
* use getWrappedCellRenderer.
*
* @see #getWrappedCellRenderer()
* @see #getCellRenderer()
*/
@Override
public void setCellRenderer(TreeCellRenderer renderer) {
// PENDING: do something against recursive setting
// == multiple delegation...
getDelegatingRenderer().setDelegateRenderer(renderer);
super.setCellRenderer(delegatingRenderer);
// quick hack for #1061: renderer/editor inconsistent
if ((renderer instanceof DefaultTreeCellRenderer) &&
(getCellEditor() instanceof DefaultXTreeCellEditor)) {
((DefaultXTreeCellEditor) getCellEditor()).setRenderer((DefaultTreeCellRenderer) renderer);
}
firePropertyChange("cellRenderer", null, delegatingRenderer);
}
/**
* A decorator for the original TreeCellRenderer. Needed to hook highlighters
* after messaging the delegate.
*
* PENDING JW: formally implement UIDependent?
* PENDING JW: missing updateUI anyway (got lost when c&p from JXList ;-)
* PENDING JW: missing override of updateUI in xtree ...
*/
public class DelegatingRenderer implements TreeCellRenderer, RolloverRenderer {
private Icon closedIcon = null;
private Icon openIcon = null;
private Icon leafIcon = null;
private TreeCellRenderer delegate;
/**
* Instantiates a DelegatingRenderer with tree's default renderer as delegate.
*/
public DelegatingRenderer() {
this(null);
initIcons(new DefaultTreeCellRenderer());
}
/**
* Instantiates a DelegatingRenderer with the given delegate. If the
* delegate is null, the default is created via the list's factory method.
*
* @param delegate the delegate to use, if null the tree's default is
* created and used.
*/
public DelegatingRenderer(TreeCellRenderer delegate) {
initIcons((DefaultTreeCellRenderer) (delegate instanceof DefaultTreeCellRenderer ?
delegate : new DefaultTreeCellRenderer()));
setDelegateRenderer(delegate);
}
/**
* initially sets the icons to the defaults as given
* by a DefaultTreeCellRenderer.
*
* @param renderer
*/
private void initIcons(DefaultTreeCellRenderer renderer) {
closedIcon = renderer.getDefaultClosedIcon();
openIcon = renderer.getDefaultOpenIcon();
leafIcon = renderer.getDefaultLeafIcon();
}
/**
* Sets the delegate. If the
* delegate is null, the default is created via the list's factory method.
* Updates the folder/leaf icons.
*
* THINK: how to update? always override with this.icons, only
* if renderer's icons are null, update this icons if they are not,
* update all if only one is != null.... ??
*
* @param delegate the delegate to use, if null the list's default is
* created and used.
*/
public void setDelegateRenderer(TreeCellRenderer delegate) {
if (delegate == null) {
delegate = createDefaultCellRenderer();
}
this.delegate = delegate;
updateIcons();
}
/**
* tries to set the renderers icons. Can succeed only if the
* delegate is a DefaultTreeCellRenderer.
* THINK: how to update? always override with this.icons, only
* if renderer's icons are null, update this icons if they are not,
* update all if only one is != null.... ??
*
*/
private void updateIcons() {
if (!isOverwriteRendererIcons()) return;
setClosedIcon(closedIcon);
setOpenIcon(openIcon);
setLeafIcon(leafIcon);
}
public void setClosedIcon(Icon closedIcon) {
if (delegate instanceof DefaultTreeCellRenderer) {
((DefaultTreeCellRenderer) delegate).setClosedIcon(closedIcon);
}
this.closedIcon = closedIcon;
}
public void setOpenIcon(Icon openIcon) {
if (delegate instanceof DefaultTreeCellRenderer) {
((DefaultTreeCellRenderer) delegate).setOpenIcon(openIcon);
}
this.openIcon = openIcon;
}
public void setLeafIcon(Icon leafIcon) {
if (delegate instanceof DefaultTreeCellRenderer) {
((DefaultTreeCellRenderer) delegate).setLeafIcon(leafIcon);
}
this.leafIcon = leafIcon;
}
//--------------- TreeCellRenderer
/**
* Returns the delegate.
*
* @return the delegate renderer used by this renderer, guaranteed to
* not-null.
*/
public TreeCellRenderer getDelegateRenderer() {
return delegate;
}
/**
* {@inheritDoc}
*
* Overridden to apply the highlighters, if any, after calling the delegate.
* The decorators are not applied if the row is invalid.
*/
public Component getTreeCellRendererComponent(JTree tree, Object value,
boolean selected, boolean expanded, boolean leaf, int row,
boolean hasFocus) {
Component result = delegate.getTreeCellRendererComponent(tree,
value, selected, expanded, leaf, row, hasFocus);
if ((compoundHighlighter != null) && (row < getRowCount())
&& (row >= 0)) {
result = compoundHighlighter.highlight(result,
getComponentAdapter(row));
}
return result;
}
// ------------------ RolloverRenderer
public boolean isEnabled() {
return (delegate instanceof RolloverRenderer)
&& ((RolloverRenderer) delegate).isEnabled();
}
public void doClick() {
if (isEnabled()) {
((RolloverRenderer) delegate).doClick();
}
}
}
/**
* Invalidates cell size caching in the ui delegate. May do nothing if there's no
* safe (i.e. without reflection) way to message the delegate.
*
* This implementation calls BasicTreeUI setLeftChildIndent with the old indent if available.
* Beware: clearing the cache is an undocumented implementation side-effect of the
* method. Revisit if we ever should have a custom ui delegate.
*
*
*/
public void invalidateCellSizeCache() {
if (getUI() instanceof BasicTreeUI) {
BasicTreeUI ui = (BasicTreeUI) getUI();
ui.setLeftChildIndent(ui.getLeftChildIndent());
}
}
//----------------------- edit
/**
* {@inheritDoc}
* Overridden to fix focus issues with editors.
* This method installs and updates the internal CellEditorRemover which
* terminates ongoing edits if appropriate. Additionally, it
* registers a CellEditorListener with the cell editor to grab the
* focus back to tree, if appropriate.
*
* @see #updateEditorRemover()
*/
@Override
public void startEditingAtPath(TreePath path) {
super.startEditingAtPath(path);
if (isEditing()) {
updateEditorListener();
updateEditorRemover();
}
}
/**
* Hack to grab focus after editing.
*/
private void updateEditorListener() {
if (editorListener == null) {
editorListener = new CellEditorListener() {
public void editingCanceled(ChangeEvent e) {
terminated(e);
}
/**
* @param e
*/
private void terminated(ChangeEvent e) {
analyseFocus();
((CellEditor) e.getSource()).removeCellEditorListener(editorListener);
}
public void editingStopped(ChangeEvent e) {
terminated(e);
}
};
}
getCellEditor().addCellEditorListener(editorListener);
}
/**
* This is called from cell editor listener if edit terminated.
* Trying to analyse if we should grab the focus back to the
* tree after. Brittle ... we assume we are the first to
* get the event, so we can analyse the hierarchy before the
* editing component is removed.
*/
protected void analyseFocus() {
if (isFocusOwnerDescending()) {
requestFocusInWindow();
}
}
/**
* Returns a boolean to indicate if the current focus owner
* is descending from this table.
* Returns false if not editing, otherwise walks the focusOwner
* hierarchy, taking popups into account.
*
* PENDING: copied from JXTable ... should be somewhere in a utility
* class?
*
* @return a boolean to indicate if the current focus
* owner is contained.
*/
private boolean isFocusOwnerDescending() {
if (!isEditing()) return false;
Component focusOwner =
KeyboardFocusManager.getCurrentKeyboardFocusManager().getFocusOwner();
// PENDING JW: special casing to not fall through ... really wanted?
if (focusOwner == null) return false;
if (SwingXUtilities.isDescendingFrom(focusOwner, this)) return true;
// same with permanent focus owner
Component permanent =
KeyboardFocusManager.getCurrentKeyboardFocusManager().getPermanentFocusOwner();
return SwingXUtilities.isDescendingFrom(permanent, this);
}
/**
* Overridden to release the CellEditorRemover, if any.
*/
@Override
public void removeNotify() {
if (editorRemover != null) {
editorRemover.release();
editorRemover = null;
}
super.removeNotify();
}
/**
* Lazily creates and updates the internal CellEditorRemover.
*
*
*/
private void updateEditorRemover() {
if (editorRemover == null) {
editorRemover = new CellEditorRemover();
}
editorRemover.updateKeyboardFocusManager();
}
/** This class tracks changes in the keyboard focus state. It is used
* when the JXTree is editing to determine when to terminate the edit.
* If focus switches to a component outside of the JXTree, but in the
* same window, this will terminate editing. The exact terminate
* behaviour is controlled by the invokeStopEditing property.
*
* @see javax.swing.JTree#setInvokesStopCellEditing(boolean)
*
*/
public class CellEditorRemover implements PropertyChangeListener {
/** the focusManager this is listening to. */
KeyboardFocusManager focusManager;
public CellEditorRemover() {
updateKeyboardFocusManager();
}
/**
* Updates itself to listen to the current KeyboardFocusManager.
*
*/
public void updateKeyboardFocusManager() {
KeyboardFocusManager current = KeyboardFocusManager.getCurrentKeyboardFocusManager();
setKeyboardFocusManager(current);
}
/**
* stops listening.
*
*/
public void release() {
setKeyboardFocusManager(null);
}
/**
* Sets the focusManager this is listening to.
* Unregisters/registers itself from/to the old/new manager,
* respectively.
*
* @param current the KeyboardFocusManager to listen too.
*/
private void setKeyboardFocusManager(KeyboardFocusManager current) {
if (focusManager == current)
return;
KeyboardFocusManager old = focusManager;
if (old != null) {
old.removePropertyChangeListener("permanentFocusOwner", this);
}
focusManager = current;
if (focusManager != null) {
focusManager.addPropertyChangeListener("permanentFocusOwner",
this);
}
}
public void propertyChange(PropertyChangeEvent ev) {
if (!isEditing()) {
return;
}
Component c = focusManager.getPermanentFocusOwner();
JXTree tree = JXTree.this;
while (c != null) {
if (c instanceof JPopupMenu) {
c = ((JPopupMenu) c).getInvoker();
} else {
if (c == tree) {
// focus remains inside the table
return;
} else if ((c instanceof Window) ||
(c instanceof Applet && c.getParent() == null)) {
if (c == SwingUtilities.getRoot(tree)) {
if (tree.getInvokesStopCellEditing()) {
tree.stopEditing();
}
if (tree.isEditing()) {
tree.cancelEditing();
}
}
break;
}
c = c.getParent();
}
}
}
}
// ------------------ oldish String conversion api, no longer recommended
/**
* {@inheritDoc}
*
* Overridden to initialize the String conversion method of the model, if any.
* PENDING JW: remove - that is an outdated approach?
*/
@Override
public void setModel(TreeModel newModel) {
super.setModel(newModel);
}
//------------------------------- ComponentAdapter
/**
* @return the unconfigured ComponentAdapter.
*/
protected ComponentAdapter getComponentAdapter() {
if (dataAdapter == null) {
dataAdapter = new TreeAdapter(this);
}
return dataAdapter;
}
/**
* Convenience to access a configured ComponentAdapter.
* Note: the column index of the configured adapter is always 0.
*
* @param index the row index in view coordinates, must be valid.
* @return the configured ComponentAdapter.
*/
protected ComponentAdapter getComponentAdapter(int index) {
ComponentAdapter adapter = getComponentAdapter();
adapter.column = 0;
adapter.row = index;
return adapter;
}
protected ComponentAdapter dataAdapter;
protected static class TreeAdapter extends ComponentAdapter {
private final JXTree tree;
/**
* Constructs a TableCellRenderContext for the specified
* target component.
*
* @param component the target component
*/
public TreeAdapter(JXTree component) {
super(component);
tree = component;
}
public JXTree getTree() {
return tree;
}
/**
* {@inheritDoc}
*/
@Override
public boolean hasFocus() {
return tree.isFocusOwner() && (tree.getLeadSelectionRow() == row);
}
/**
* {@inheritDoc}
*/
@Override
public Object getValueAt(int row, int column) {
TreePath path = tree.getPathForRow(row);
return path.getLastPathComponent();
}
/**
* {@inheritDoc}
*/
@Override
public String getStringAt(int row, int column) {
return tree.getStringAt(row);
}
/**
* {@inheritDoc}
*/
@Override
public Rectangle getCellBounds() {
return tree.getRowBounds(row);
}
/**
* {@inheritDoc}
*/
@Override
public boolean isEditable() {
//this is not as robust as JXTable; should it be? -- kgs
return tree.isPathEditable(tree.getPathForRow(row));
}
/**
* {@inheritDoc}
*/
@Override
public boolean isSelected() {
return tree.isRowSelected(row);
}
/**
* {@inheritDoc}
*/
@Override
public boolean isExpanded() {
return tree.isExpanded(row);
}
/**
* {@inheritDoc}
*/
@Override
public int getDepth() {
return tree.getPathForRow(row).getPathCount() - 1;
}
/**
* {@inheritDoc}
*/
@Override
public boolean isHierarchical() {
return true;
}
/**
* {@inheritDoc}
*/
@Override
public boolean isLeaf() {
return tree.getModel().isLeaf(getValue());
}
/**
* {@inheritDoc}
*/
@Override
public boolean isCellEditable(int row, int column) {
return false; /** TODO: */
}
}
}