1*b1cdbd2cSJim Jagielski /************************************************************** 2*b1cdbd2cSJim Jagielski * 3*b1cdbd2cSJim Jagielski * Licensed to the Apache Software Foundation (ASF) under one 4*b1cdbd2cSJim Jagielski * or more contributor license agreements. See the NOTICE file 5*b1cdbd2cSJim Jagielski * distributed with this work for additional information 6*b1cdbd2cSJim Jagielski * regarding copyright ownership. The ASF licenses this file 7*b1cdbd2cSJim Jagielski * to you under the Apache License, Version 2.0 (the 8*b1cdbd2cSJim Jagielski * "License"); you may not use this file except in compliance 9*b1cdbd2cSJim Jagielski * with the License. You may obtain a copy of the License at 10*b1cdbd2cSJim Jagielski * 11*b1cdbd2cSJim Jagielski * http://www.apache.org/licenses/LICENSE-2.0 12*b1cdbd2cSJim Jagielski * 13*b1cdbd2cSJim Jagielski * Unless required by applicable law or agreed to in writing, 14*b1cdbd2cSJim Jagielski * software distributed under the License is distributed on an 15*b1cdbd2cSJim Jagielski * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY 16*b1cdbd2cSJim Jagielski * KIND, either express or implied. See the License for the 17*b1cdbd2cSJim Jagielski * specific language governing permissions and limitations 18*b1cdbd2cSJim Jagielski * under the License. 19*b1cdbd2cSJim Jagielski * 20*b1cdbd2cSJim Jagielski *************************************************************/ 21*b1cdbd2cSJim Jagielski 22*b1cdbd2cSJim Jagielski import javax.swing.tree.DefaultTreeCellRenderer; 23*b1cdbd2cSJim Jagielski import javax.swing.tree.TreePath; 24*b1cdbd2cSJim Jagielski import javax.swing.JTree; 25*b1cdbd2cSJim Jagielski import java.awt.Color; 26*b1cdbd2cSJim Jagielski import java.awt.Component; 27*b1cdbd2cSJim Jagielski import java.util.Vector; 28*b1cdbd2cSJim Jagielski 29*b1cdbd2cSJim Jagielski 30*b1cdbd2cSJim Jagielski public class AccessibleTreeCellRenderer 31*b1cdbd2cSJim Jagielski extends DefaultTreeCellRenderer 32*b1cdbd2cSJim Jagielski { 33*b1cdbd2cSJim Jagielski public Color 34*b1cdbd2cSJim Jagielski maDefaultColor, 35*b1cdbd2cSJim Jagielski maChangedColor; 36*b1cdbd2cSJim Jagielski protected Vector 37*b1cdbd2cSJim Jagielski maChangedLines; 38*b1cdbd2cSJim Jagielski 39*b1cdbd2cSJim Jagielski 40*b1cdbd2cSJim Jagielski AccessibleTreeCellRenderer()41*b1cdbd2cSJim Jagielski public AccessibleTreeCellRenderer () 42*b1cdbd2cSJim Jagielski { 43*b1cdbd2cSJim Jagielski maDefaultColor = Color.black; 44*b1cdbd2cSJim Jagielski maChangedColor = Color.red; 45*b1cdbd2cSJim Jagielski maChangedLines = new Vector (); 46*b1cdbd2cSJim Jagielski } 47*b1cdbd2cSJim Jagielski getTreeCellRendererComponent( JTree tree, Object value, boolean sel, boolean expanded, boolean leaf, int row, boolean hasFocus)48*b1cdbd2cSJim Jagielski public Component getTreeCellRendererComponent ( 49*b1cdbd2cSJim Jagielski JTree tree, 50*b1cdbd2cSJim Jagielski Object value, 51*b1cdbd2cSJim Jagielski boolean sel, 52*b1cdbd2cSJim Jagielski boolean expanded, 53*b1cdbd2cSJim Jagielski boolean leaf, 54*b1cdbd2cSJim Jagielski int row, 55*b1cdbd2cSJim Jagielski boolean hasFocus) 56*b1cdbd2cSJim Jagielski { 57*b1cdbd2cSJim Jagielski super.getTreeCellRendererComponent( 58*b1cdbd2cSJim Jagielski tree, value, sel, 59*b1cdbd2cSJim Jagielski expanded, leaf, row, 60*b1cdbd2cSJim Jagielski hasFocus); 61*b1cdbd2cSJim Jagielski 62*b1cdbd2cSJim Jagielski if (maChangedLines.size()<=row || maChangedLines.elementAt (row) == null) 63*b1cdbd2cSJim Jagielski setTextNonSelectionColor (maDefaultColor); 64*b1cdbd2cSJim Jagielski else 65*b1cdbd2cSJim Jagielski setTextNonSelectionColor (maChangedColor); 66*b1cdbd2cSJim Jagielski 67*b1cdbd2cSJim Jagielski return this; 68*b1cdbd2cSJim Jagielski } 69*b1cdbd2cSJim Jagielski 70*b1cdbd2cSJim Jagielski /** Tell the cell renderer that no changes shall be displayed anymore. 71*b1cdbd2cSJim Jagielski */ clearAllChanges()72*b1cdbd2cSJim Jagielski public void clearAllChanges () 73*b1cdbd2cSJim Jagielski { 74*b1cdbd2cSJim Jagielski maChangedLines.clear(); 75*b1cdbd2cSJim Jagielski } 76*b1cdbd2cSJim Jagielski 77*b1cdbd2cSJim Jagielski /** Inform the cell renderer of a new changed line which to paint 78*b1cdbd2cSJim Jagielski highlighted when asked to paint it the next time. 79*b1cdbd2cSJim Jagielski */ addChangedLine(int nRow)80*b1cdbd2cSJim Jagielski public void addChangedLine (int nRow) 81*b1cdbd2cSJim Jagielski { 82*b1cdbd2cSJim Jagielski if (maChangedLines.size() <= nRow) 83*b1cdbd2cSJim Jagielski maChangedLines.setSize (nRow+1); 84*b1cdbd2cSJim Jagielski nRow -= 1; // row index is one to large for some reason. 85*b1cdbd2cSJim Jagielski maChangedLines.set (nRow, new Boolean (true)); 86*b1cdbd2cSJim Jagielski } 87*b1cdbd2cSJim Jagielski 88*b1cdbd2cSJim Jagielski /** Inform the cell renderer of a set of changed line which to paint 89*b1cdbd2cSJim Jagielski highlighted when asked to paint them the next time. 90*b1cdbd2cSJim Jagielski @param aChangedNodes 91*b1cdbd2cSJim Jagielski The set of changed nodes. Each entry is a TreePath. 92*b1cdbd2cSJim Jagielski @param aTree 93*b1cdbd2cSJim Jagielski The JTree that is used to transform the given TreePath objects 94*b1cdbd2cSJim Jagielski into rows. 95*b1cdbd2cSJim Jagielski */ addChangedNodes(Vector aChangedNodes, JTree aTree)96*b1cdbd2cSJim Jagielski public void addChangedNodes (Vector aChangedNodes, JTree aTree) 97*b1cdbd2cSJim Jagielski { 98*b1cdbd2cSJim Jagielski for (int i=0; i<aChangedNodes.size(); i++) 99*b1cdbd2cSJim Jagielski { 100*b1cdbd2cSJim Jagielski TreePath aPath = (TreePath)aChangedNodes.elementAt (i); 101*b1cdbd2cSJim Jagielski int nRow = aTree.getRowForPath (aPath); 102*b1cdbd2cSJim Jagielski addChangedLine (nRow); 103*b1cdbd2cSJim Jagielski } 104*b1cdbd2cSJim Jagielski } 105*b1cdbd2cSJim Jagielski 106*b1cdbd2cSJim Jagielski } 107*b1cdbd2cSJim Jagielski 108