/*
* @(#)WindowsTreeUI.java 1.26 05/11/17
*
* Copyright 2006 Sun Microsystems, Inc. All rights reserved.
* SUN PROPRIETARY/CONFIDENTIAL. Use is subject to license terms.
*/
package com.sun.java.swing.plaf.windows;
import java.awt.*;
import java.awt.event.*;
import java.io.*;
import java.util.*;
import javax.swing.plaf.basic.*;
import javax.swing.*;
import javax.swing.plaf.*;
import javax.swing.tree.*;
import static com.sun.java.swing.plaf.windows.TMSchema.*;
import static com.sun.java.swing.plaf.windows.XPStyle.Skin;
/**
* A Windows tree.
* <p>
* <strong>Warning:</strong>
* 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. A future release of Swing will provide support for
* long term persistence.
*
* @version 1.26 11/17/05
* @author Scott Violet
*/
public class WindowsTreeUI extends BasicTreeUI {
public static ComponentUI createUI( JComponent c )
{
return new WindowsTreeUI();
}
/**
* Ensures that the rows identified by beginRow through endRow are
* visible.
*/
protected void ensureRowsAreVisible(int beginRow, int endRow) {
if(tree != null && beginRow >= 0 && endRow < getRowCount(tree)) {
Rectangle visRect = tree.getVisibleRect();
if(beginRow == endRow) {
Rectangle scrollBounds = getPathBounds(tree, getPathForRow
(tree, beginRow));
if(scrollBounds != null) {
scrollBounds.x = visRect.x;
scrollBounds.width = visRect.width;
tree.scrollRectToVisible(scrollBounds);
}
}
else {
Rectangle beginRect = getPathBounds(tree, getPathForRow
(tree, beginRow));
Rectangle testRect = beginRect;
int beginY = beginRect.y;
int maxY = beginY + visRect.height;
for(int counter = beginRow + 1; counter <= endRow; counter++) {
testRect = getPathBounds(tree,
getPathForRow(tree, counter));
if((testRect.y + testRect.height) > maxY)
counter = endRow;
}
tree.scrollRectToVisible(new Rectangle(visRect.x, beginY, 1,
testRect.y + testRect.height-
beginY));
}
}
}
static protected final int HALF_SIZE = 4;
static protected final int SIZE = 9;
/**
* Returns the default cell renderer that is used to do the
* stamping of each node.
*/
protected TreeCellRenderer createDefaultCellRenderer() {
return new WindowsTreeCellRenderer();
}
/**
* The minus sign button icon
* <p>
* <strong>Warning:</strong>
* 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. A future release of Swing will provide support for
* long term persistence.
*/
public static class ExpandedIcon implements Icon, Serializable {
static public Icon createExpandedIcon() {
return new ExpandedIcon();
}
Skin getSkin(Component c) {
XPStyle xp = XPStyle.getXP();
return (xp != null) ? xp.getSkin(c, Part.TVP_GLYPH) : null;
}
public void paintIcon(Component c, Graphics g, int x, int y) {
Skin skin = getSkin(c);
if (skin != null) {
skin.paintSkin(g, x, y, State.OPENED);
return;
}
Color backgroundColor = c.getBackground();
if(backgroundColor != null)
g.setColor(backgroundColor);
else
g.setColor(Color.white);
g.fillRect(x, y, SIZE-1, SIZE-1);
g.setColor(Color.gray);
g.drawRect(x, y, SIZE-1, SIZE-1);
g.setColor(Color.black);
g.drawLine(x + 2, y + HALF_SIZE, x + (SIZE - 3), y + HALF_SIZE);
}
public int getIconWidth() {
Skin skin = getSkin(null);
return (skin != null) ? skin.getWidth() : SIZE;
}
public int getIconHeight() {
Skin skin = getSkin(null);
return (skin != null) ? skin.getHeight() : SIZE;
}
}
/**
* The plus sign button icon
* <p>
* <strong>Warning:</strong>
* 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. A future release of Swing will provide support for
* long term persistence.
*/
public static class CollapsedIcon extends ExpandedIcon {
static public Icon createCollapsedIcon() {
return new CollapsedIcon();
}
public void paintIcon(Component c, Graphics g, int x, int y) {
Skin skin = getSkin(c);
if (skin != null) {
skin.paintSkin(g, x, y, State.CLOSED);
} else {
super.paintIcon(c, g, x, y);
g.drawLine(x + HALF_SIZE, y + 2, x + HALF_SIZE, y + (SIZE - 3));
}
}
}
public class WindowsTreeCellRenderer extends DefaultTreeCellRenderer {
/**
* Configures the renderer based on the passed in components.
* The value is set from messaging the tree with
* <code>convertValueToText</code>, which ultimately invokes
* <code>toString</code> on <code>value</code>.
* The foreground color is set based on the selection and the icon
* is set based on on leaf and expanded.
*/
public Component getTreeCellRendererComponent(JTree tree, Object value,
boolean sel,
boolean expanded,
boolean leaf, int row,
boolean hasFocus) {
super.getTreeCellRendererComponent(tree, value, sel,
expanded, leaf, row,
hasFocus);
// Windows displays the open icon when the tree item selected.
if (!tree.isEnabled()) {
setEnabled(false);
if (leaf) {
setDisabledIcon(getLeafIcon());
} else if (sel) {
setDisabledIcon(getOpenIcon());
} else {
setDisabledIcon(getClosedIcon());
}
}
else {
setEnabled(true);
if (leaf) {
setIcon(getLeafIcon());
} else if (sel) {
setIcon(getOpenIcon());
} else {
setIcon(getClosedIcon());
}
}
return this;
}
}
}