| /************************************************************** |
| * |
| * Licensed to the Apache Software Foundation (ASF) under one |
| * or more contributor license agreements. See the NOTICE file |
| * distributed with this work for additional information |
| * regarding copyright ownership. The ASF licenses this file |
| * to you 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. |
| * |
| *************************************************************/ |
| |
| import javax.swing.tree.DefaultTreeCellRenderer; |
| import javax.swing.tree.TreePath; |
| import javax.swing.JTree; |
| import java.awt.Color; |
| import java.awt.Component; |
| import java.util.Vector; |
| |
| |
| public class AccessibleTreeCellRenderer |
| extends DefaultTreeCellRenderer |
| { |
| public Color |
| maDefaultColor, |
| maChangedColor; |
| protected Vector |
| maChangedLines; |
| |
| |
| |
| public AccessibleTreeCellRenderer () |
| { |
| maDefaultColor = Color.black; |
| maChangedColor = Color.red; |
| maChangedLines = new Vector (); |
| } |
| |
| 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); |
| |
| if (maChangedLines.size()<=row || maChangedLines.elementAt (row) == null) |
| setTextNonSelectionColor (maDefaultColor); |
| else |
| setTextNonSelectionColor (maChangedColor); |
| |
| return this; |
| } |
| |
| /** Tell the cell renderer that no changes shall be displayed anymore. |
| */ |
| public void clearAllChanges () |
| { |
| maChangedLines.clear(); |
| } |
| |
| /** Inform the cell renderer of a new changed line which to paint |
| highlighted when asked to paint it the next time. |
| */ |
| public void addChangedLine (int nRow) |
| { |
| if (maChangedLines.size() <= nRow) |
| maChangedLines.setSize (nRow+1); |
| nRow -= 1; // row index is one to large for some reason. |
| maChangedLines.set (nRow, new Boolean (true)); |
| } |
| |
| /** Inform the cell renderer of a set of changed line which to paint |
| highlighted when asked to paint them the next time. |
| @param aChangedNodes |
| The set of changed nodes. Each entry is a TreePath. |
| @param aTree |
| The JTree that is used to transform the given TreePath objects |
| into rows. |
| */ |
| public void addChangedNodes (Vector aChangedNodes, JTree aTree) |
| { |
| for (int i=0; i<aChangedNodes.size(); i++) |
| { |
| TreePath aPath = (TreePath)aChangedNodes.elementAt (i); |
| int nRow = aTree.getRowForPath (aPath); |
| addChangedLine (nRow); |
| } |
| } |
| |
| } |
| |