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JIDE Common Layer (Professional Swing Components)
/*
* @(#)SimpleStyleTreeCellRenderer.java
*
* Copyright 2002 - 2005 JIDE Software. All rights reserved.
*/
package com.jidesoft.tree;
import com.jidesoft.plaf.UIDefaultsLookup;
import com.jidesoft.swing.StyledLabel;
import javax.swing.*;
import javax.swing.plaf.ColorUIResource;
import javax.swing.plaf.FontUIResource;
import javax.swing.plaf.basic.BasicGraphicsUtils;
import javax.swing.tree.TreeCellRenderer;
import java.awt.*;
/**
* A tree cell renderer based on StyledLabel. To use it, you should make your cell renderer extending this one and
* override {@link #customizeStyledLabel(javax.swing.JTree, Object, boolean, boolean, boolean, int, boolean)} method. If your
* overridden method, you can call setStyleRange() or setStyleRanges() based on the tree node value and row index.
*/
public class StyledTreeCellRenderer extends StyledLabel implements TreeCellRenderer {
/**
* Last tree the renderer was painted in.
*/
private JTree tree;
/**
* Is the value currently selected.
*/
protected boolean selected;
/**
* True if has focus.
*/
protected boolean hasFocus;
/**
* True if draws focus border around icon as well.
*/
private boolean drawsFocusBorderAroundIcon;
/**
* If true, a dashed line is drawn as the focus indicator.
*/
private boolean drawDashedFocusIndicator;
// If drawDashedFocusIndicator is true, the following are used.
/**
* Background color of the tree.
*/
private Color treeBGColor;
/**
* Color to draw the focus indicator in, determined from the background. color.
*/
private Color focusBGColor;
// Icons
/**
* Icon used to show non-leaf nodes that aren't expanded.
*/
transient protected Icon closedIcon;
/**
* Icon used to show leaf nodes.
*/
transient protected Icon leafIcon;
/**
* Icon used to show non-leaf nodes that are expanded.
*/
transient protected Icon openIcon;
// Colors
/**
* Color to use for the foreground for selected nodes.
*/
protected Color textSelectionColor;
/**
* Color to use for the foreground for non-selected nodes.
*/
protected Color textNonSelectionColor;
/**
* Color to use for the background when a node is selected.
*/
protected Color backgroundSelectionColor;
/**
* Color to use for the background when the node isn't selected.
*/
protected Color backgroundNonSelectionColor;
/**
* Color to use for the focus indicator when the node has focus.
*/
protected Color borderSelectionColor;
/**
* Returns a new instance of DefaultTreeCellRenderer. Alignment is set to left aligned. Icons and text color are
* determined from the UIManager.
*/
public StyledTreeCellRenderer() {
updateUIDefaults();
}
@Override
public void updateUI() {
super.updateUI();
updateUIDefaults();
}
private void updateUIDefaults() {
setLeafIcon(UIDefaultsLookup.getIcon("Tree.leafIcon"));
setClosedIcon(UIDefaultsLookup.getIcon("Tree.closedIcon"));
setOpenIcon(UIDefaultsLookup.getIcon("Tree.openIcon"));
setTextSelectionColor(UIDefaultsLookup.getColor("Tree.selectionForeground"));
setTextNonSelectionColor(UIDefaultsLookup.getColor("Tree.textForeground"));
setBackgroundSelectionColor(UIDefaultsLookup.getColor("Tree.selectionBackground"));
setBackgroundNonSelectionColor(UIDefaultsLookup.getColor("Tree.textBackground"));
setBorderSelectionColor(UIDefaultsLookup.getColor("Tree.selectionBorderColor"));
Object value = UIDefaultsLookup.get("Tree.drawsFocusBorderAroundIcon");
drawsFocusBorderAroundIcon = (value != null && (Boolean) value);
value = UIDefaultsLookup.get("Tree.drawDashedFocusIndicator");
drawDashedFocusIndicator = (value != null && (Boolean) value);
}
/**
* Returns the default icon, for the current laf, that is used to represent non-leaf nodes that are expanded.
*/
public Icon getDefaultOpenIcon() {
return UIDefaultsLookup.getIcon("Tree.openIcon");
}
/**
* Returns the default icon, for the current laf, that is used to represent non-leaf nodes that are not expanded.
*/
public Icon getDefaultClosedIcon() {
return UIDefaultsLookup.getIcon("Tree.closedIcon");
}
/**
* Returns the default icon, for the current laf, that is used to represent leaf nodes.
*/
public Icon getDefaultLeafIcon() {
return UIDefaultsLookup.getIcon("Tree.leafIcon");
}
/**
* Sets the icon used to represent non-leaf nodes that are expanded.
*/
public void setOpenIcon(Icon newIcon) {
openIcon = newIcon;
}
/**
* Returns the icon used to represent non-leaf nodes that are expanded.
*/
public Icon getOpenIcon() {
return openIcon;
}
/**
* Sets the icon used to represent non-leaf nodes that are not expanded.
*/
public void setClosedIcon(Icon newIcon) {
closedIcon = newIcon;
}
/**
* Returns the icon used to represent non-leaf nodes that are not expanded.
*/
public Icon getClosedIcon() {
return closedIcon;
}
/**
* Sets the icon used to represent leaf nodes.
*/
public void setLeafIcon(Icon newIcon) {
leafIcon = newIcon;
}
/**
* Returns the icon used to represent leaf nodes.
*/
public Icon getLeafIcon() {
return leafIcon;
}
/**
* Sets the color the text is drawn with when the node is selected.
*/
public void setTextSelectionColor(Color newColor) {
textSelectionColor = newColor;
}
/**
* Returns the color the text is drawn with when the node is selected.
*/
public Color getTextSelectionColor() {
return textSelectionColor;
}
/**
* Sets the color the text is drawn with when the node isn't selected.
*/
public void setTextNonSelectionColor(Color newColor) {
textNonSelectionColor = newColor;
}
/**
* Returns the color the text is drawn with when the node isn't selected.
*/
public Color getTextNonSelectionColor() {
return textNonSelectionColor;
}
/**
* Sets the color to use for the background if node is selected.
*/
public void setBackgroundSelectionColor(Color newColor) {
backgroundSelectionColor = newColor;
}
/**
* Returns the color to use for the background if node is selected.
*/
public Color getBackgroundSelectionColor() {
return backgroundSelectionColor;
}
/**
* Sets the background color to be used for non selected nodes.
*/
public void setBackgroundNonSelectionColor(Color newColor) {
backgroundNonSelectionColor = newColor;
}
/**
* Returns the background color to be used for non selected nodes.
*/
public Color getBackgroundNonSelectionColor() {
return backgroundNonSelectionColor;
}
/**
* Sets the color to use for the border.
*/
public void setBorderSelectionColor(Color newColor) {
borderSelectionColor = newColor;
}
/**
* Returns the color the border is drawn.
*/
public Color getBorderSelectionColor() {
return borderSelectionColor;
}
/**
* Subclassed to map FontUIResources to null. If font is null, or a
* FontUIResource, this has the effect of letting the font of the JTree show through. On the other
* hand, if font is non-null, and not a FontUIResource, the font becomes
* font.
*/
@Override
public void setFont(Font font) {
if (font instanceof FontUIResource)
font = null;
super.setFont(font);
}
/**
* Gets the font of this component.
*
* @return this component's font; if a font has not been set for this component, the font of its parent is returned
*/
@Override
public Font getFont() {
Font font = super.getFont();
if (font == null && tree != null) {
// Strive to return a non-null value, otherwise the html support
// will typically pick up the wrong font in certain situations.
font = tree.getFont();
}
return font;
}
/**
* Subclassed to map ColorUIResources to null. If color is null, or a
* ColorUIResource, this has the effect of letting the background color of the JTree show through. On
* the other hand, if color is non-null, and not a ColorUIResource, the background becomes
* color.
*/
@Override
public void setBackground(Color color) {
if (color instanceof ColorUIResource)
color = null;
super.setBackground(color);
}
/**
* Configures the renderer based on the passed in components. The value is set from messaging the tree with
* convertValueToText, which ultimately invokes toString on value. The
* foreground color is set based on the selection and the icon is set based on the leaf and
* expanded parameters.
*/
public Component getTreeCellRendererComponent(JTree tree, Object value,
boolean sel,
boolean expanded,
boolean leaf, int row,
boolean hasFocus) {
setOpaque(false);
// There needs to be a way to specify disabled icons.
if (!tree.isEnabled()) {
setEnabled(false);
if (leaf) {
setDisabledIcon(getLeafIcon());
}
else if (expanded) {
setDisabledIcon(getOpenIcon());
}
else {
setDisabledIcon(getClosedIcon());
}
}
else {
setEnabled(true);
if (leaf) {
setIcon(getLeafIcon());
}
else if (expanded) {
setIcon(getOpenIcon());
}
else {
setIcon(getClosedIcon());
}
}
setIgnoreColorSettings(sel);
customizeStyledLabel(tree, value, sel, expanded, leaf, row, hasFocus);
this.tree = tree;
this.hasFocus = hasFocus;
if (sel)
setForeground(getTextSelectionColor());
else
setForeground(getTextNonSelectionColor());
applyComponentOrientation(tree.getComponentOrientation());
selected = sel;
return this;
}
/**
* Overrides this method to customize the styled label.
*
* @param tree
* @param value
* @param sel
* @param expanded
* @param leaf
* @param row
* @param hasFocus
*/
protected void customizeStyledLabel(JTree tree, Object value, boolean sel, boolean expanded, boolean leaf, int row, boolean hasFocus) {
String stringValue = tree.convertValueToText(value, sel,
expanded, leaf, row, hasFocus);
clearStyleRanges();
setText(stringValue);
}
/**
* Paints the value. The background is filled based on selected.
*/
@Override
public void paint(Graphics g) {
Color bColor;
if (selected) {
bColor = getBackgroundSelectionColor();
}
else {
bColor = getBackgroundNonSelectionColor();
if (bColor == null)
bColor = getBackground();
}
int imageOffset = -1;
if (selected || isOpaque()) {
if (bColor != null) {
imageOffset = getLabelStart();
g.setColor(bColor);
if (getComponentOrientation().isLeftToRight()) {
g.fillRect(imageOffset, 0, getWidth() - imageOffset, getHeight());
}
else {
g.fillRect(0, 0, getWidth() - imageOffset, getHeight());
}
}
}
super.paint(g);
if (hasFocus) {
if (drawsFocusBorderAroundIcon) {
imageOffset = 0;
}
else if (imageOffset == -1) {
imageOffset = getLabelStart();
}
if (getComponentOrientation().isLeftToRight()) {
paintFocus(g, imageOffset, 0, getWidth() - imageOffset,
getHeight());
}
else {
paintFocus(g, 0, 0, getWidth() - imageOffset, getHeight());
}
}
}
private void paintFocus(Graphics g, int x, int y, int w, int h) {
Color bsColor = getBorderSelectionColor();
if (bsColor != null && (selected || !drawDashedFocusIndicator)) {
g.setColor(bsColor);
g.drawRect(x, y, w - 1, h - 1);
}
if (drawDashedFocusIndicator) {
Color color;
if (selected) {
color = getBackgroundSelectionColor();
}
else {
color = getBackgroundNonSelectionColor();
if (color == null) {
color = getBackground();
}
}
if (treeBGColor != color) {
treeBGColor = color;
focusBGColor = new Color(~color.getRGB());
}
g.setColor(focusBGColor);
BasicGraphicsUtils.drawDashedRect(g, x, y, w, h);
}
}
private int getLabelStart() {
Icon icon = getIcon();
if (icon != null && getText().trim().length() != 0) {
return icon.getIconWidth() + Math.max(0, getIconTextGap());
}
return 0;
}
/**
* Overrides JComponent.getPreferredSize to return slightly wider preferred size value.
*/
@Override
public Dimension getPreferredSize() {
Dimension retDimension = super.getPreferredSize();
if (retDimension != null)
retDimension = new Dimension(retDimension.width + 3,
retDimension.height);
return retDimension;
}
/**
* Overridden for performance reasons. See the Implementation Note for more information.
*/
@Override
public void validate() {
}
/**
* Overridden for performance reasons. See the Implementation Note for more information.
*
* @since 1.5
*/
@Override
public void invalidate() {
}
/**
* Overridden for performance reasons. See the Implementation Note for more information.
*/
@Override
public void revalidate() {
}
/**
* Overridden for performance reasons. See the Implementation Note for more information.
*/
@Override
public void repaint(long tm, int x, int y, int width, int height) {
}
/**
* Overridden for performance reasons. See the Implementation Note for more information.
*/
@Override
public void repaint(Rectangle r) {
}
/**
* Overridden for performance reasons. See the Implementation Note for more information.
*
* @since 1.5
*/
@Override
public void repaint() {
}
/**
* Overridden for performance reasons. See the Implementation Note for more information.
*/
@Override
protected void firePropertyChange(String propertyName, Object oldValue, Object newValue) {
// Strings get interned...
if (propertyName.equals("text"))
super.firePropertyChange(propertyName, oldValue, newValue);
}
/**
* Overridden for performance reasons. See the Implementation Note for more information.
*/
@Override
public void firePropertyChange(String propertyName, byte oldValue, byte newValue) {
}
/**
* Overridden for performance reasons. See the Implementation Note for more information.
*/
@Override
public void firePropertyChange(String propertyName, char oldValue, char newValue) {
}
/**
* Overridden for performance reasons. See the Implementation Note for more information.
*/
@Override
public void firePropertyChange(String propertyName, short oldValue, short newValue) {
}
/**
* Overridden for performance reasons. See the Implementation Note for more information.
*/
@Override
public void firePropertyChange(String propertyName, int oldValue, int newValue) {
}
/**
* Overridden for performance reasons. See the Implementation Note for more information.
*/
@Override
public void firePropertyChange(String propertyName, long oldValue, long newValue) {
}
/**
* Overridden for performance reasons. See the Implementation Note for more information.
*/
@Override
public void firePropertyChange(String propertyName, float oldValue, float newValue) {
}
/**
* Overridden for performance reasons. See the Implementation Note for more information.
*/
@Override
public void firePropertyChange(String propertyName, double oldValue, double newValue) {
}
/**
* Overridden for performance reasons. See the Implementation Note for more information.
*/
@Override
public void firePropertyChange(String propertyName, boolean oldValue, boolean newValue) {
}
}
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