1 /*
2 * This file is part of Pease Plate Template Engine.
3 *
4 * Pease Plate Template Engine is free software: you can redistribute
5 * it and/or modify it under the terms of the GNU Lesser General
6 * Public License as published by the Free Software Foundation,
7 * either version 3 of the License, or any later version.
8 *
9 * Pease Plate Template Engine is distributed in the hope that it
10 * will be useful, but WITHOUT ANY WARRANTY; without even the implied
11 * warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
12 * See the GNU Lesser General Public License for more details.
13 *
14 * You should have received a copy of the GNU Lesser General Public
15 * License along with Pease Plate Template Engine. If not, see
16 * <http://www.gnu.org/licenses/>.
17 *
18 * Copyright (c) 2008 Manfred HANTSCHEL
19 */
20 package org.peaseplate.chunk;
21
22 import java.io.IOException;
23 import java.io.Writer;
24
25 import org.peaseplate.TemplateException;
26 import org.peaseplate.internal.BuildContext;
27 import org.peaseplate.locator.TemplateLocator;
28
29 /**
30 * The abstract implementation of the block head.
31 *
32 * @author Manfred HANTSCHEL
33 */
34 public abstract class AbstractBlock extends AbstractChunk implements BlockHead {
35
36 private Chunk[] block = null;
37
38 public AbstractBlock(TemplateLocator locator, int line, int column) {
39 super(locator, line, column);
40 }
41
42 /**
43 * @see org.peaseplate.chunk.BlockHead#getBlock()
44 */
45 public Chunk[] getBlock() {
46 return block;
47 }
48
49 /**
50 * @see org.peaseplate.chunk.BlockHead#setBlock(org.peaseplate.chunk.Chunk[])
51 */
52 public void setBlock(Chunk[] block) throws IllegalStateException {
53 if ((this.block != null) && (block != null) && (this.block != block))
54 throw new IllegalStateException("Block has already block");
55
56 this.block = block;
57 }
58
59 /**
60 * @see org.peaseplate.chunk.BlockHead#renderBlock(BuildContext, java.io.Writer)
61 */
62 public void renderBlock(BuildContext context, Writer writer) throws TemplateException, IOException {
63 for (Chunk chunk : getBlock())
64 chunk.render(context, writer);
65 }
66
67 /**
68 * @see java.lang.Object#toString()
69 */
70 @Override
71 public String toString() {
72 StringBuilder builder = new StringBuilder("{\n");
73
74 if (getBlock() != null)
75 for (Chunk chunk : getBlock())
76 builder.append("\t").append(
77 chunk.toString().replace("\n", "\n\t")
78 ).append("\n");
79
80 builder.append("}");
81
82 return builder.toString();
83 }
84
85 }