/*
* Copyright 2000-2007 JetBrains s.r.o.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package com.intellij.ui;
import com.intellij.util.ui.Tree;
import com.intellij.util.ui.tree.TreeUtil;
import javax.swing.*;
import javax.swing.tree.DefaultTreeModel;
import javax.swing.tree.TreeCellRenderer;
import javax.swing.tree.TreePath;
import javax.swing.tree.TreeModel;
import java.awt.*;
import java.awt.event.KeyAdapter;
import java.awt.event.KeyEvent;
import java.awt.event.MouseAdapter;
import java.awt.event.MouseEvent;
import java.util.Enumeration;
/**
* @author Dmitry Avdeev
*/
public class CheckboxTreeBase extends Tree {
public CheckboxTreeBase(final CheckboxTreeCellRendererBase cellRenderer, CheckedTreeNode root) {
setCellRenderer(cellRenderer);
setRootVisible(false);
setShowsRootHandles(true);
setLineStyleAngled();
TreeUtil.installActions(this);
addMouseListener(new MouseAdapter() {
public void mouseClicked(MouseEvent e) {
int row = getRowForLocation(e.getX(), e.getY());
if (row >= 0) {
Rectangle rowBounds = getRowBounds(row);
cellRenderer.setBounds(rowBounds);
Rectangle checkBounds = cellRenderer.myCheckbox.getBounds();
checkBounds.setLocation(rowBounds.getLocation());
final CheckedTreeNode node = (CheckedTreeNode) getPathForRow(row).getLastPathComponent();
if (checkBounds.contains(e.getPoint())) {
if (node.isEnabled()) {
toggleNode(node);
setSelectionRow(row);
}
e.consume();
}
else if (e.getClickCount() > 1) {
onDoubleClick(node);
}
}
}
});
addKeyListener(
new KeyAdapter() {
public void keyPressed(KeyEvent e) {
if(isToggleEvent(e)) {
TreePath treePath = getLeadSelectionPath();
if (treePath == null) return;
CheckedTreeNode firstNode = (CheckedTreeNode)treePath.getLastPathComponent();
boolean checked = toggleNode(firstNode);
TreePath[] selectionPaths = getSelectionPaths();
for (int i = 0; selectionPaths != null && i < selectionPaths.length; i++) {
final TreePath selectionPath = selectionPaths[i];
CheckedTreeNode node = (CheckedTreeNode)selectionPath.getLastPathComponent();
checkNode(node,checked);
}
e.consume();
}
}
}
);
setSelectionRow(0);
setModel(new DefaultTreeModel(root));
}
protected void onDoubleClick(final CheckedTreeNode node) {
}
protected boolean isToggleEvent(KeyEvent e) {
return e.getKeyCode() == KeyEvent.VK_SPACE;
}
protected boolean toggleNode(CheckedTreeNode node) {
boolean checked = !node.isChecked();
checkNode(node, checked);
// notify model listeners about model change
final TreeModel model = getModel();
model.valueForPathChanged(new TreePath(node.getPath()), node.getUserObject());
return checked;
}
public int getToggleClickCount() {
// to prevent node expanding/collapsing on checkbox toggling
return -1;
}
protected void checkNode(CheckedTreeNode node, boolean checked) {
node.setChecked(checked);
repaint();
}
protected void adjustParentsAndChildren(final CheckedTreeNode node, final boolean checked) {
node.setChecked(checked);
if (checked) {
CheckedTreeNode parent = (CheckedTreeNode)node.getParent();
while (parent != null) {
parent.setChecked(true);
parent = (CheckedTreeNode)parent.getParent();
}
}
else {
uncheckChildren(node);
}
repaint();
}
private static void uncheckChildren(final CheckedTreeNode node) {
final Enumeration children = node.children();
while (children.hasMoreElements()) {
CheckedTreeNode child = (CheckedTreeNode)children.nextElement();
child.setChecked(false);
uncheckChildren(child);
}
}
public static abstract class CheckboxTreeCellRendererBase extends JPanel implements TreeCellRenderer {
private final ColoredTreeCellRenderer myTextRenderer;
public final JCheckBox myCheckbox;
public CheckboxTreeCellRendererBase(boolean opaque) {
super(new BorderLayout());
myCheckbox = new JCheckBox();
myTextRenderer = new ColoredTreeCellRenderer() {
public void customizeCellRenderer(JTree tree,
Object value,
boolean selected,
boolean expanded,
boolean leaf,
int row,
boolean hasFocus) {
}
};
myTextRenderer.setOpaque(opaque);
add(myCheckbox, BorderLayout.WEST);
add(myTextRenderer, BorderLayout.CENTER);
}
public CheckboxTreeCellRendererBase() {
this(true);
}
public final Component getTreeCellRendererComponent(JTree tree,
Object value,
boolean selected,
boolean expanded,
boolean leaf,
int row,
boolean hasFocus) {
invalidate();
if (value instanceof CheckedTreeNode) {
CheckedTreeNode node = (CheckedTreeNode)value;
myCheckbox.setEnabled(node.isEnabled());
myCheckbox.setSelected(node.isChecked());
myCheckbox.setBackground(null);
setBackground(null);
myTextRenderer.getTreeCellRendererComponent(tree, value, selected, expanded, leaf, row, hasFocus);
customizeCellRenderer(tree, value, selected, expanded, leaf, row, hasFocus);
}
return this;
}
/**
* This method is invoked only for customization of component.
* All component attributes are cleared when this method is being invoked.
*/
public abstract void customizeCellRenderer(
JTree tree,
Object value,
boolean selected,
boolean expanded,
boolean leaf,
int row,
boolean hasFocus
);
public ColoredTreeCellRenderer getTextRenderer() {
return myTextRenderer;
}
public JCheckBox getCheckbox() {
return myCheckbox;
}
}
}