editor.LabTreeUi Maven / Gradle / Ivy
package editor;
import java.awt.*;
import java.io.Serializable;
import javax.swing.*;
import javax.swing.plaf.ComponentUI;
import javax.swing.plaf.basic.BasicTreeUI;
import javax.swing.tree.DefaultTreeCellRenderer;
import javax.swing.tree.TreeCellRenderer;
/**
*/
public class LabTreeUi extends WindowsTreeUI
{
static protected final int HALF_SIZE = 4;
static protected final int SIZE = 9;
public static ComponentUI createUI( JComponent c )
{
return new LabTreeUi();
}
/**
* Returns the default cell renderer that is used to do the stamping of each node.
*/
protected TreeCellRenderer createDefaultCellRenderer()
{
return new WindowsTreeCellRenderer();
}
public class WindowsTreeCellRenderer extends DefaultTreeCellRenderer
{
/**
* 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 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;
}
}
/**
* The minus sign button icon
*/
public static class ExpandedIcon implements Icon, Serializable
{
static public Icon createExpandedIcon()
{
return new ExpandedIcon();
}
public void paintIcon( Component c, Graphics g, int x, int y )
{
Color backgroundColor = c.getBackground();
if( backgroundColor != null )
{
g.setColor( backgroundColor );
}
else
{
g.setColor( Scheme.active().getWindow() );
}
g.fillRect( x, y, SIZE - 1, SIZE - 1 );
g.setColor( Scheme.active().getTreeHandleBorderColor() );
g.drawRect( x, y, SIZE - 1, SIZE - 1 );
g.setColor( Scheme.active().getWindowText() );
g.drawLine( x + 2, y + HALF_SIZE, x + (SIZE - 3), y + HALF_SIZE );
}
public int getIconWidth()
{
return SIZE;
}
public int getIconHeight()
{
return SIZE;
}
}
/**
* The plus sign button icon
*/
public static class CollapsedIcon extends ExpandedIcon
{
static public Icon createCollapsedIcon()
{
return new CollapsedIcon();
}
public void paintIcon( Component c, Graphics g, int x, int y )
{
super.paintIcon( c, g, x, y );
g.drawLine( x + HALF_SIZE, y + 2, x + HALF_SIZE, y + (SIZE - 3) );
}
}
}
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));
if (beginRect != null) {
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 != null && (testRect.y + testRect.height) > maxY) {
counter = endRow;
}
}
if (testRect == null) {
return;
}
tree.scrollRectToVisible(new Rectangle(visRect.x, beginY, 1,
testRect.y + testRect.height-
beginY));
}
}
}
}
protected static final int HALF_SIZE = 4;
protected static 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
*
* 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. A future release of Swing will provide support for
* long term persistence.
*/
@SuppressWarnings("serial") // Same-version serialization only
public static class ExpandedIcon implements Icon, Serializable {
public static Icon createExpandedIcon() {
return new ExpandedIcon();
}
public void paintIcon(Component c, Graphics g, int x, int y) {
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() {
return SIZE;
}
public int getIconHeight() {
return SIZE;
}
}
/**
* The plus sign button icon
*
* 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. A future release of Swing will provide support for
* long term persistence.
*/
@SuppressWarnings("serial") // Superclass is not serializable across versions
public static class CollapsedIcon extends ExpandedIcon
{
public static Icon createCollapsedIcon() {
return new CollapsedIcon();
}
public void paintIcon(Component c, Graphics g, int x, int y) {
super.paintIcon(c, g, x, y);
g.drawLine(x + HALF_SIZE, y + 2, x + HALF_SIZE, y + (SIZE - 3));
}
}
@SuppressWarnings("serial") // Superclass is not serializable across versions
public class WindowsTreeCellRenderer extends DefaultTreeCellRenderer {
/**
* 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 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;
}
}
}