01: /**
02: * ===========================================
03: * JFreeReport : a free Java reporting library
04: * ===========================================
05: *
06: * Project Info: http://reporting.pentaho.org/
07: *
08: * (C) Copyright 2001-2007, by Object Refinery Ltd, Pentaho Corporation and Contributors.
09: *
10: * This library is free software; you can redistribute it and/or modify it under the terms
11: * of the GNU Lesser General Public License as published by the Free Software Foundation;
12: * either version 2.1 of the License, or (at your option) any later version.
13: *
14: * This library is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY;
15: * without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
16: * See the GNU Lesser General Public License for more details.
17: *
18: * You should have received a copy of the GNU Lesser General Public License along with this
19: * library; if not, write to the Free Software Foundation, Inc., 59 Temple Place, Suite 330,
20: * Boston, MA 02111-1307, USA.
21: *
22: * [Java is a trademark or registered trademark of Sun Microsystems, Inc.
23: * in the United States and other countries.]
24: *
25: * ------------
26: * RollbackStep.java
27: * ------------
28: * (C) Copyright 2001-2007, by Object Refinery Ltd, Pentaho Corporation and Contributors.
29: */package org.jfree.report.layout.process;
30:
31: import org.jfree.report.layout.model.BlockRenderBox;
32: import org.jfree.report.layout.model.CanvasRenderBox;
33: import org.jfree.report.layout.model.InlineRenderBox;
34: import org.jfree.report.layout.model.LogicalPageBox;
35: import org.jfree.report.layout.model.ParagraphRenderBox;
36: import org.jfree.report.layout.model.RenderBox;
37:
38: /**
39: * Creation-Date: 18.10.2007, 13:41:08
40: *
41: * @author Thomas Morgner
42: */
43: public class RollbackStep extends IterateStructuralProcessStep {
44: public RollbackStep() {
45: }
46:
47: public void compute(final LogicalPageBox pageBox) {
48: startProcessing(pageBox);
49: }
50:
51: protected void processParagraphChilds(final ParagraphRenderBox box) {
52: processBoxChilds(box);
53: }
54:
55: private boolean processBox(final RenderBox box) {
56: if (box.isAppliedSeen() == false) {
57: // must be a new box. Go away, evil new box ...
58: final RenderBox parent = box.getParent();
59: if (parent != null) {
60: parent.remove(box);
61: }
62: return false;
63: }
64:
65: if (box.isAppliedOpen()) {
66: box.reopenAfterRollback();
67: return true;
68: }
69:
70: return false;
71: }
72:
73: protected boolean startCanvasBox(final CanvasRenderBox box) {
74: return processBox(box);
75: }
76:
77: protected boolean startBlockBox(final BlockRenderBox box) {
78: return processBox(box);
79: }
80:
81: protected boolean startInlineBox(final InlineRenderBox box) {
82: return processBox(box);
83: }
84:
85: protected boolean startOtherBox(final RenderBox box) {
86: return processBox(box);
87: }
88: }
|