/*
* MultiLineCellRenderer.java Copyright (C) 2019. Daniel H. Huson
*
* (Some files contain contributions from other authors, who are then mentioned separately.)
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see .
*/
package jloda.swing.util;
import jloda.util.Basic;
import jloda.util.ProgramProperties;
import javax.swing.*;
import javax.swing.tree.TreeCellRenderer;
import java.awt.*;
/**
* MultiLine Cell Renderer for the JTree to display more than one line
*
* @author daniel huson, 2010
*/
public class MultiLineCellRenderer implements TreeCellRenderer {
public final static String GRAY = "";
public final static String RED = "";
public final static String BLUE = "";
public final static String GREEN = "";
/**
* create a multi-line renderer
*/
public MultiLineCellRenderer() {
}
/**
* get the tree cell render component
*
* @param tree
* @param value
* @param isSelected
* @param expanded
* @param leaf
* @param row
* @param hasFocus
* @return component
*/
public Component getTreeCellRendererComponent(JTree tree, Object value, boolean isSelected, boolean expanded,
boolean leaf, int row, boolean hasFocus) {
String stringValue = tree.convertValueToText(value, isSelected, expanded, leaf, row, hasFocus);
JEditorPane textPane = new JEditorPane();
textPane.setEditable(false);
textPane.setContentType("text/html");
String text = Basic.trimEmptyLines(stringValue);
if (text.contains("\n") && text.indexOf("\n") < text.length() - 1) // more than one line:
{
text = Basic.trimEmptyLines(text).replaceAll("\t", " ");
text = "" + text + "
";
} else // only one line:
text = "" + text + "";
textPane.setText(text);
textPane.setEnabled(tree.isEnabled());
if (isSelected) {
textPane.setBackground(ProgramProperties.SELECTION_COLOR);
} else {
textPane.setBackground(UIManager.getColor("Tree.textBackground"));
}
textPane.revalidate();
return textPane;
}
}