下面列出了怎么用javax.swing.tree.TreeCellRenderer的API类实例代码及写法，或者点击链接到github查看源代码。
@Test
public void categoryNodesHaveCorrectExtraInformation() {
JPanel toolPanel = toolWindow.getContent();
Component[] components = toolPanel.getComponents();
OnePixelSplitter splitter = (OnePixelSplitter) components[0];
JBScrollPane leftPane = (JBScrollPane) splitter.getFirstComponent();
JViewport leftView = leftPane.getViewport();
Tree suggestionTree = (Tree) leftView.getView();
TreePath webPPath = getTreePathWithString(suggestionTree, webPCategoryData.toString());
TreeCellRenderer treeCellRenderer = suggestionTree.getCellRenderer();
Component renderedNode =
treeCellRenderer.getTreeCellRendererComponent(
suggestionTree,
webPPath.getLastPathComponent(),
false,
false,
false,
suggestionTree.getRowForPath(webPPath),
false);
assertThat(renderedNode.toString()).contains("2 recommendations");
assertThat(renderedNode.toString()).contains("29.30 KB");
}
public Component getTreeCellRendererComponent(JTree tree,
Object value,
boolean selected,
boolean expanded,
boolean leaf,
int row,
boolean hasFocus) {
boolean isResultRootNode =
(value instanceof TreeNode)
&& (((TreeNode) value).getParent() == null);
// render no icon space an empty icon of a callStackFrame
boolean isCallstackFrame = false;
if (null != value) {
isCallstackFrame = (Visualizer.findNode(value) instanceof CallstackFrameNode);
}
TreeCellRenderer renderer = (isResultRootNode || isCallstackFrame)
? noIconTreeCellRenderer
: defaultTreeCellRenderer;
return renderer.getTreeCellRendererComponent(
tree, value, selected, expanded, leaf, row, hasFocus);
}
public boolean isCellEditable(final EventObject anEvent) {
if (anEvent instanceof MouseEvent) {
final MouseEvent event = (MouseEvent) anEvent;
final int row = treeTable.rowAtPoint(event.getPoint());
final Rectangle bounds = tree.getRowBounds(row);
int offset = bounds.x;
final Object node = tree.getPathForRow(row).getLastPathComponent();
final boolean leaf = tree.getModel().isLeaf(node);
final boolean expanded = tree.isExpanded(row);
final TreeCellRenderer tcr = tree.getCellRenderer();
final Component treeComponent = tcr.getTreeCellRendererComponent(
tree, node, true, expanded, leaf, row, false);
if (treeComponent instanceof JLabel) {
final JLabel label = (JLabel) treeComponent;
final Icon icon = label.getIcon();
if (icon != null) {
offset += icon.getIconWidth() + label.getIconTextGap();
}
}
if (event.getPoint().x < offset)
return false;
}
return deligate.isCellEditable(anEvent);
}
public static boolean isInCell(final Component c) {
if (getParentOfType(DarkTableHeaderRendererPane.class, c, CELL_SEARCH_DEPTH) != null) return false;
boolean inCellRenderer = getParentOfType(c, CELL_SEARCH_DEPTH, CellRendererPane.class, CellEditor.class,
TableCellRenderer.class, TableCellEditor.class,
TreeCellRenderer.class, TreeCellEditor.class,
ListCellRenderer.class, CellRenderer.class) != null;
return inCellRenderer && getParentOfType(JComboBox.class, c) == null;
}
/**
* {@inheritDoc}
*/
@Override
protected TreeCellEditor createDefaultCellEditor() {
TreeCellRenderer renderer = tree.getCellRenderer();
DefaultTreeCellEditor editor;
if(renderer != null && (renderer instanceof DefaultTreeCellRenderer)) {
editor = new SynthTreeCellEditor(tree, (DefaultTreeCellRenderer)
renderer);
}
else {
editor = new SynthTreeCellEditor(tree, null);
}
return editor;
}
private void configureRenderer(SynthContext context) {
TreeCellRenderer renderer = tree.getCellRenderer();
if (renderer instanceof DefaultTreeCellRenderer) {
DefaultTreeCellRenderer r = (DefaultTreeCellRenderer)renderer;
SynthStyle style = context.getStyle();
context.setComponentState(ENABLED | SELECTED);
Color color = r.getTextSelectionColor();
if (color == null || (color instanceof UIResource)) {
r.setTextSelectionColor(style.getColor(
context, ColorType.TEXT_FOREGROUND));
}
color = r.getBackgroundSelectionColor();
if (color == null || (color instanceof UIResource)) {
r.setBackgroundSelectionColor(style.getColor(
context, ColorType.TEXT_BACKGROUND));
}
context.setComponentState(ENABLED);
color = r.getTextNonSelectionColor();
if (color == null || color instanceof UIResource) {
r.setTextNonSelectionColor(style.getColorForState(
context, ColorType.TEXT_FOREGROUND));
}
color = r.getBackgroundNonSelectionColor();
if (color == null || color instanceof UIResource) {
r.setBackgroundNonSelectionColor(style.getColorForState(
context, ColorType.TEXT_BACKGROUND));
}
}
}
public CheckTreeCellRenderer(TreeCellRenderer delegate, CheckTreeSelectionModel selectionModel) {
this.delegate = delegate;
this.selectionModel = selectionModel;
setLayout(new BorderLayout());
setOpaque(false);
checkBox.setOpaque(false);
}
/**
* {@inheritDoc}
*/
@Override
protected TreeCellEditor createDefaultCellEditor() {
TreeCellRenderer renderer = tree.getCellRenderer();
DefaultTreeCellEditor editor;
if(renderer != null && (renderer instanceof DefaultTreeCellRenderer)) {
editor = new SynthTreeCellEditor(tree, (DefaultTreeCellRenderer)
renderer);
}
else {
editor = new SynthTreeCellEditor(tree, null);
}
return editor;
}
/** Paint each of the given nodes that is inside of the clips */
private void paintNodes(List<GTreeNode> nodes, Graphics g) {
TreeCellRenderer cellRenderer = tree.getCellRenderer();
Rectangle clip = g.getClipBounds();
Container parent = tree.getParent();
int yOffset = 0;
try {
for (GTreeNode node : nodes) {
int row = tree.getRowForPath(node.getTreePath());
Rectangle rowBounds = tree.getRowBounds(row);
rowBounds = SwingUtilities.convertRectangle(tree, rowBounds, parent);
if (clip.y > rowBounds.y + rowBounds.height) {
continue; // above our clip
}
if (clip.y + clip.height < rowBounds.y + rowBounds.height) {
// painted past the bounds of our clip
return;
}
Component renderer =
cellRenderer.getTreeCellRendererComponent(tree, node, true, true,
node.isLeaf(), row, false);
renderer.setSize(renderer.getPreferredSize());
// move down the point in our graphics space into which we will paint
yOffset += rowBounds.height;
g.translate(0, rowBounds.height);
renderer.paint(g);
}
}
finally {
// restore the point into graphics that we will paint
g.translate(0, -yOffset);
}
}
/**
* {@inheritDoc}
*/
@Override
protected TreeCellEditor createDefaultCellEditor() {
TreeCellRenderer renderer = tree.getCellRenderer();
DefaultTreeCellEditor editor;
if(renderer != null && (renderer instanceof DefaultTreeCellRenderer)) {
editor = new SynthTreeCellEditor(tree, (DefaultTreeCellRenderer)
renderer);
}
else {
editor = new SynthTreeCellEditor(tree, null);
}
return editor;
}
private void configureRenderer(SynthContext context) {
TreeCellRenderer renderer = tree.getCellRenderer();
if (renderer instanceof DefaultTreeCellRenderer) {
DefaultTreeCellRenderer r = (DefaultTreeCellRenderer)renderer;
SynthStyle style = context.getStyle();
context.setComponentState(ENABLED | SELECTED);
Color color = r.getTextSelectionColor();
if (color == null || (color instanceof UIResource)) {
r.setTextSelectionColor(style.getColor(
context, ColorType.TEXT_FOREGROUND));
}
color = r.getBackgroundSelectionColor();
if (color == null || (color instanceof UIResource)) {
r.setBackgroundSelectionColor(style.getColor(
context, ColorType.TEXT_BACKGROUND));
}
context.setComponentState(ENABLED);
color = r.getTextNonSelectionColor();
if (color == null || color instanceof UIResource) {
r.setTextNonSelectionColor(style.getColorForState(
context, ColorType.TEXT_FOREGROUND));
}
color = r.getBackgroundNonSelectionColor();
if (color == null || color instanceof UIResource) {
r.setBackgroundNonSelectionColor(style.getColorForState(
context, ColorType.TEXT_BACKGROUND));
}
}
}
/**
* {@inheritDoc}
*/
@Override
protected TreeCellEditor createDefaultCellEditor() {
TreeCellRenderer renderer = tree.getCellRenderer();
DefaultTreeCellEditor editor;
if(renderer != null && (renderer instanceof DefaultTreeCellRenderer)) {
editor = new SynthTreeCellEditor(tree, (DefaultTreeCellRenderer)
renderer);
}
else {
editor = new SynthTreeCellEditor(tree, null);
}
return editor;
}
private void configureRenderer(SynthContext context) {
TreeCellRenderer renderer = tree.getCellRenderer();
if (renderer instanceof DefaultTreeCellRenderer) {
DefaultTreeCellRenderer r = (DefaultTreeCellRenderer)renderer;
SynthStyle style = context.getStyle();
context.setComponentState(ENABLED | SELECTED);
Color color = r.getTextSelectionColor();
if (color == null || (color instanceof UIResource)) {
r.setTextSelectionColor(style.getColor(
context, ColorType.TEXT_FOREGROUND));
}
color = r.getBackgroundSelectionColor();
if (color == null || (color instanceof UIResource)) {
r.setBackgroundSelectionColor(style.getColor(
context, ColorType.TEXT_BACKGROUND));
}
context.setComponentState(ENABLED);
color = r.getTextNonSelectionColor();
if (color == null || color instanceof UIResource) {
r.setTextNonSelectionColor(style.getColorForState(
context, ColorType.TEXT_FOREGROUND));
}
color = r.getBackgroundNonSelectionColor();
if (color == null || color instanceof UIResource) {
r.setBackgroundNonSelectionColor(style.getColorForState(
context, ColorType.TEXT_BACKGROUND));
}
}
}
private void configureRenderer(SynthContext context) {
TreeCellRenderer renderer = tree.getCellRenderer();
if (renderer instanceof DefaultTreeCellRenderer) {
DefaultTreeCellRenderer r = (DefaultTreeCellRenderer)renderer;
SynthStyle style = context.getStyle();
context.setComponentState(ENABLED | SELECTED);
Color color = r.getTextSelectionColor();
if (color == null || (color instanceof UIResource)) {
r.setTextSelectionColor(style.getColor(
context, ColorType.TEXT_FOREGROUND));
}
color = r.getBackgroundSelectionColor();
if (color == null || (color instanceof UIResource)) {
r.setBackgroundSelectionColor(style.getColor(
context, ColorType.TEXT_BACKGROUND));
}
context.setComponentState(ENABLED);
color = r.getTextNonSelectionColor();
if (color == null || color instanceof UIResource) {
r.setTextNonSelectionColor(style.getColorForState(
context, ColorType.TEXT_FOREGROUND));
}
color = r.getBackgroundNonSelectionColor();
if (color == null || color instanceof UIResource) {
r.setBackgroundNonSelectionColor(style.getColorForState(
context, ColorType.TEXT_BACKGROUND));
}
}
}
private void configureRenderer(SynthContext context) {
TreeCellRenderer renderer = tree.getCellRenderer();
if (renderer instanceof DefaultTreeCellRenderer) {
DefaultTreeCellRenderer r = (DefaultTreeCellRenderer)renderer;
SynthStyle style = context.getStyle();
context.setComponentState(ENABLED | SELECTED);
Color color = r.getTextSelectionColor();
if (color == null || (color instanceof UIResource)) {
r.setTextSelectionColor(style.getColor(
context, ColorType.TEXT_FOREGROUND));
}
color = r.getBackgroundSelectionColor();
if (color == null || (color instanceof UIResource)) {
r.setBackgroundSelectionColor(style.getColor(
context, ColorType.TEXT_BACKGROUND));
}
context.setComponentState(ENABLED);
color = r.getTextNonSelectionColor();
if (color == null || color instanceof UIResource) {
r.setTextNonSelectionColor(style.getColorForState(
context, ColorType.TEXT_FOREGROUND));
}
color = r.getBackgroundNonSelectionColor();
if (color == null || color instanceof UIResource) {
r.setBackgroundNonSelectionColor(style.getColorForState(
context, ColorType.TEXT_BACKGROUND));
}
}
}
/**
* Maps {@code JTree.getCellRenderer()} through queue
*/
public TreeCellRenderer getCellRenderer() {
return (runMapping(new MapAction<TreeCellRenderer>("getCellRenderer") {
@Override
public TreeCellRenderer map() {
return ((JTree) getSource()).getCellRenderer();
}
}));
}
public Component getTableCellEditorComponent(JTable table,
Object value, boolean isSelected, int r, int c)
{
Component component = super.getTableCellEditorComponent(table, value, isSelected, r, c);
//boolean rv = t.isRootVisible();
//int offsetRow = rv ? r : r - 1;
int offsetRow = r;
Rectangle bounds = this.table.getCellRect(offsetRow, 0, false);
int offset = bounds.x;
TreeCellRenderer tcr = this.table.getTreeCellRenderer();
System.out.println("Renderer is a : "+tcr);
if(tcr instanceof DelegatingRenderer)
tcr = ((DelegatingRenderer)tcr).getDelegateRenderer();
System.out.println("After un-delegataion, renderer is a : "+tcr);
if (tcr instanceof DefaultTreeCellRenderer)
{
System.out.println("Renderer is a DefaultTreeCellRenderer");
Object node = this.table.getPathForRow(offsetRow).getLastPathComponent();
int depth = this.table.getPathForRow(offsetRow).getPathCount();
System.out.println("Node's depth is "+depth);
offset += (depth - 1) * 20;
Icon icon;
if (this.table.getTreeTableModel().isLeaf(node))
icon = ((DefaultTreeCellRenderer) tcr).getLeafIcon();
else if (this.table.isExpanded(offsetRow))
icon = ((DefaultTreeCellRenderer) tcr).getOpenIcon();
else
icon = ((DefaultTreeCellRenderer) tcr).getClosedIcon();
if (icon != null)
{
offset += ((DefaultTreeCellRenderer) tcr).getIconTextGap()
+ icon.getIconWidth();
}
}
((PartTypeComboBox) getComponent()).offset = offset;
((PartTypeComboBox) getComponent()).setSelectedItem(value);
return component;
}
/**
* {@inheritDoc}
*/
@Override
protected TreeCellEditor createDefaultCellEditor() {
TreeCellRenderer renderer = tree.getCellRenderer();
DefaultTreeCellEditor editor;
if(renderer != null && (renderer instanceof DefaultTreeCellRenderer)) {
editor = new SynthTreeCellEditor(tree, (DefaultTreeCellRenderer)
renderer);
}
else {
editor = new SynthTreeCellEditor(tree, null);
}
return editor;
}
private void configureRenderer(SynthContext context) {
TreeCellRenderer renderer = tree.getCellRenderer();
if (renderer instanceof DefaultTreeCellRenderer) {
DefaultTreeCellRenderer r = (DefaultTreeCellRenderer)renderer;
SynthStyle style = context.getStyle();
context.setComponentState(ENABLED | SELECTED);
Color color = r.getTextSelectionColor();
if (color == null || (color instanceof UIResource)) {
r.setTextSelectionColor(style.getColor(
context, ColorType.TEXT_FOREGROUND));
}
color = r.getBackgroundSelectionColor();
if (color == null || (color instanceof UIResource)) {
r.setBackgroundSelectionColor(style.getColor(
context, ColorType.TEXT_BACKGROUND));
}
context.setComponentState(ENABLED);
color = r.getTextNonSelectionColor();
if (color == null || color instanceof UIResource) {
r.setTextNonSelectionColor(style.getColorForState(
context, ColorType.TEXT_FOREGROUND));
}
color = r.getBackgroundNonSelectionColor();
if (color == null || color instanceof UIResource) {
r.setBackgroundNonSelectionColor(style.getColorForState(
context, ColorType.TEXT_BACKGROUND));
}
}
}
private String getTextForNodeObject(JTree tree, Object lastPathComponent) {
TreeCellRenderer renderer = tree.getCellRenderer();
if (renderer == null) {
return null;
}
Component c = renderer.getTreeCellRendererComponent(tree, lastPathComponent, false, false, false, 0, false);
if (c != null && c instanceof JLabel) {
return ((JLabel) c).getText();
}
return lastPathComponent.toString();
}
@Override
public Component getPseudoComponent() {
return EventQueueWait.exec(new Callable<Component>() {
@Override
public Component call() throws Exception {
validateRow();
JTree tree = (JTree) parent.getComponent();
TreeCellRenderer cellRenderer = tree.getCellRenderer();
TreePath pathForRow = tree.getPathForRow(viewRow);
Object lastPathComponent = pathForRow.getLastPathComponent();
return cellRenderer.getTreeCellRendererComponent(tree, lastPathComponent, false, false, false, viewRow, false);
}
});
}
public static Component getRendererComponent(JTree tree, int row) {
TreeCellRenderer cellRenderer = tree.getCellRenderer();
TreePath pathForRow = tree.getPathForRow(row);
Object lastPathComponent = pathForRow.getLastPathComponent();
Component rendererComponent = cellRenderer.getTreeCellRendererComponent(tree, lastPathComponent, false, false, false, row,
false);
if (rendererComponent == null) {
return null;
}
if (rendererComponent instanceof JComponent) {
((JComponent) rendererComponent).putClientProperty("jtree", (JTree) tree);
((JComponent) rendererComponent).putClientProperty("row", row);
}
return rendererComponent;
}
private String getTextForNodeObject(JTree tree, Object lastPathComponent) {
TreeCellRenderer renderer = tree.getCellRenderer();
if (renderer == null) {
return null;
}
Component c = renderer.getTreeCellRendererComponent(tree, lastPathComponent, false, false, false, 0, false);
if (c != null && c instanceof JLabel) {
return ((JLabel) c).getText();
}
return lastPathComponent.toString();
}
/**
* Maps {@code JTree.setCellRenderer(TreeCellRenderer)} through queue
*/
public void setCellRenderer(final TreeCellRenderer treeCellRenderer) {
runMapping(new MapVoidAction("setCellRenderer") {
@Override
public void map() {
((JTree) getSource()).setCellRenderer(treeCellRenderer);
}
});
}
private void initExpressionCombo() {
TreeCellRenderer renderer = new TreeComboRenderer(FormUtils.getBundleString("MSG_BindingCustomizer_NullExpression")); // NOI18N
expressionCombo = new ComboBoxWithTree(expressionModel, renderer, new Converter(expressionModel));
expressionCombo.setSelectedItem("null"); // NOI18N
renderer = new TreeComboRenderer(FormUtils.getBundleString("MSG_BindingCustomizer_NullDisplayExpression")); // NOI18N
displayExpressionCombo = new ComboBoxWithTree(displayExpressionModel, renderer, new Converter(displayExpressionModel));
displayExpressionCombo.setSelectedItem("null"); // NOI18N
}
/**
* Creates a cell renderer for the DOM tree.
*
* @param delegate delegating/original tree renderer.
* @return call renderer for the DOM tree.
*/
private TreeCellRenderer createTreeCellRenderer(final TreeCellRenderer delegate) {
Color origColor = UIManager.getColor("Tree.selectionBackground"); // NOI18N
Color color = origColor.brighter().brighter();
if (color.equals(Color.WHITE)) { // Issue 217127
color = origColor.darker();
}
// Color used for hovering highlight
final Color hoverColor = color;
final boolean nimbus = "Nimbus".equals(UIManager.getLookAndFeel().getID()); // NOI18N
final JPanel nimbusPanel = nimbus ? new JPanel(new BorderLayout()) : null;
return new DefaultTreeCellRenderer() {
@Override
public Component getTreeCellRendererComponent(JTree tree, Object value, boolean selected, boolean expanded, boolean leaf, int row, boolean hasFocus) {
JComponent component;
if (!selected && isHighlighted(value)) {
component = (JComponent)delegate.getTreeCellRendererComponent(tree, value, true, expanded, leaf, row, hasFocus);
if (nimbus) {
nimbusPanel.removeAll();
nimbusPanel.add(component);
component = nimbusPanel;
}
component.setBackground(hoverColor);
component.setOpaque(true);
} else {
component = (JLabel)delegate.getTreeCellRendererComponent(tree, value, selected, expanded, leaf, row, hasFocus);
}
return component;
}
};
}
/**
* {@inheritDoc}
*/
@Override
protected TreeCellEditor createDefaultCellEditor() {
TreeCellRenderer renderer = tree.getCellRenderer();
DefaultTreeCellEditor editor;
if(renderer != null && (renderer instanceof DefaultTreeCellRenderer)) {
editor = new SynthTreeCellEditor(tree, (DefaultTreeCellRenderer)
renderer);
}
else {
editor = new SynthTreeCellEditor(tree, null);
}
return editor;
}
/**
* Creates a cell renderer for the tree view.
*
* @param delegate delegating/original tree renderer.
* @return call renderer for the tree view.
*/
private TreeCellRenderer createTreeCellRenderer(final TreeCellRenderer delegate) {
return new DefaultTreeCellRenderer() {
@Override
public Component getTreeCellRendererComponent(JTree tree, Object value, boolean selected, boolean expanded, boolean leaf, int row, boolean hasFocus) {
return delegate.getTreeCellRendererComponent(tree, value, selected, expanded, leaf, row, hasFocus);
}
};
}
private void configureRenderer(SynthContext context) {
TreeCellRenderer renderer = tree.getCellRenderer();
if (renderer instanceof DefaultTreeCellRenderer) {
DefaultTreeCellRenderer r = (DefaultTreeCellRenderer)renderer;
SynthStyle style = context.getStyle();
context.setComponentState(ENABLED | SELECTED);
Color color = r.getTextSelectionColor();
if (color == null || (color instanceof UIResource)) {
r.setTextSelectionColor(style.getColor(
context, ColorType.TEXT_FOREGROUND));
}
color = r.getBackgroundSelectionColor();
if (color == null || (color instanceof UIResource)) {
r.setBackgroundSelectionColor(style.getColor(
context, ColorType.TEXT_BACKGROUND));
}
context.setComponentState(ENABLED);
color = r.getTextNonSelectionColor();
if (color == null || color instanceof UIResource) {
r.setTextNonSelectionColor(style.getColorForState(
context, ColorType.TEXT_FOREGROUND));
}
color = r.getBackgroundNonSelectionColor();
if (color == null || color instanceof UIResource) {
r.setBackgroundNonSelectionColor(style.getColorForState(
context, ColorType.TEXT_BACKGROUND));
}
}
}
public StructureTreeView(TreeCellRenderer r,String lineStyle){
super();
tree.setCellRenderer(r);
tree.putClientProperty("JTree.lineStyle", lineStyle); // NOI18N
tree.setShowsRootHandles(false);
//expandAll();
}