106 lines
3.1 KiB
Java
106 lines
3.1 KiB
Java
/*
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* This file is part of the LibreOffice project.
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*
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* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/.
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*
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* This file incorporates work covered by the following license notice:
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*
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* Licensed to the Apache Software Foundation (ASF) under one or more
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* contributor license agreements. See the NOTICE file distributed
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* with this work for additional information regarding copyright
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* ownership. The ASF licenses this file to you under the Apache
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* License, Version 2.0 (the "License"); you may not use this file
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* except in compliance with the License. You may obtain a copy of
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* the License at http://www.apache.org/licenses/LICENSE-2.0 .
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*/
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import java.awt.Color;
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import java.awt.Component;
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import java.util.ArrayList;
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import java.util.List;
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import javax.swing.JTree;
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import javax.swing.tree.DefaultTreeCellRenderer;
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import javax.swing.tree.TreePath;
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public class AccessibleTreeCellRenderer
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extends DefaultTreeCellRenderer
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{
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public Color
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maDefaultColor,
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maChangedColor;
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protected ArrayList<Boolean>
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maChangedLines;
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public AccessibleTreeCellRenderer ()
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{
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maDefaultColor = Color.black;
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maChangedColor = Color.red;
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maChangedLines = new ArrayList<Boolean> ();
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}
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public Component getTreeCellRendererComponent (
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JTree tree,
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Object value,
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boolean sel,
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boolean expanded,
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boolean leaf,
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int row,
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boolean hasFocus)
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{
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super.getTreeCellRendererComponent(
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tree, value, sel,
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expanded, leaf, row,
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hasFocus);
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if (maChangedLines.size()<=row || maChangedLines.get (row) == null)
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setTextNonSelectionColor (maDefaultColor);
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else
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setTextNonSelectionColor (maChangedColor);
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return this;
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}
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/** Tell the cell renderer that no changes shall be displayed anymore.
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*/
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public void clearAllChanges ()
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{
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maChangedLines.clear();
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}
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/** Inform the cell renderer of a new changed line which to paint
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highlighted when asked to paint it the next time.
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*/
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public void addChangedLine (int nRow)
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{
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while (maChangedLines.size() <= nRow)
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maChangedLines.add(null);
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nRow -= 1; // row index is one to large for some reason.
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maChangedLines.set (nRow, true);
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}
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/** Inform the cell renderer of a set of changed line which to paint
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highlighted when asked to paint them the next time.
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@param aChangedNodes
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The set of changed nodes. Each entry is a TreePath.
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@param aTree
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The JTree that is used to transform the given TreePath objects
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into rows.
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*/
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public void addChangedNodes (List<TreePath> aChangedNodes, JTree aTree)
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{
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for (int i=0; i<aChangedNodes.size(); i++)
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{
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TreePath aPath = aChangedNodes.get (i);
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int nRow = aTree.getRowForPath (aPath);
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addChangedLine (nRow);
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}
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}
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}
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