3ea135bb |
1 | /**\r |
2 | * Copyright (C) 2003 <a href="http://www.lohndirekt.de/">lohndirekt.de</a>\r |
3 | *\r |
4 | * This library is free software; you can redistribute it and/or\r |
5 | * modify it under the terms of the GNU Lesser General Public\r |
6 | * License as published by the Free Software Foundation; either\r |
7 | * version 2.1 of the License, or (at your option) any later version.\r |
8 | * \r |
9 | * This library is distributed in the hope that it will be useful,\r |
10 | * but WITHOUT ANY WARRANTY; without even the implied warranty of\r |
11 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU\r |
12 | * Lesser General Public License for more details.\r |
13 | * \r |
14 | * You should have received a copy of the GNU Lesser General Public\r |
15 | * License along with this library; if not, write to the Free Software\r |
16 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA\r |
17 | * \r |
18 | */\r |
19 | package de.lohndirekt.print;\r |
20 | \r |
21 | import java.io.IOException;\r |
22 | import java.util.ArrayList;\r |
23 | import java.util.Iterator;\r |
24 | import java.util.List;\r |
25 | \r |
26 | import javax.print.Doc;\r |
27 | import javax.print.MultiDoc;\r |
28 | \r |
29 | /**\r |
30 | * @author bpusch\r |
31 | *\r |
32 | */\r |
33 | public class SimpleMultiDoc implements MultiDoc {\r |
34 | \r |
35 | private List listeners;\r |
36 | Doc doc = null;\r |
37 | boolean lastDoc = false;\r |
38 | SimpleMultiDoc next = null;\r |
39 | \r |
40 | public static SimpleMultiDoc create(Doc doc) {\r |
41 | return new SimpleMultiDoc(doc, false);\r |
42 | }\r |
43 | \r |
44 | public static SimpleMultiDoc create(Doc doc, boolean lastDoc) {\r |
45 | return new SimpleMultiDoc(doc, lastDoc);\r |
46 | }\r |
47 | \r |
48 | /**\r |
49 | * \r |
50 | */\r |
51 | protected SimpleMultiDoc(Doc doc, boolean lastDoc) {\r |
52 | if (doc == null) {\r |
53 | throw new NullPointerException("Doc must not be null");\r |
54 | }\r |
55 | this.doc = doc;\r |
56 | this.lastDoc = lastDoc;\r |
57 | }\r |
58 | \r |
59 | /**\r |
60 | * Adds a new MultiDoc.\r |
61 | * If the next MultiDoc has already been set, it tries to add it there\r |
62 | * \r |
63 | * @param doc\r |
64 | * @param lastDoc\r |
65 | * @throws IllegalStateException if this has already been the last Document\r |
66 | */\r |
67 | public void setNext(Doc doc, boolean lastDoc) {\r |
68 | if (this.lastDoc) {\r |
69 | throw new IllegalStateException("Last Doc already sent");\r |
70 | }\r |
71 | if (doc == null) {\r |
72 | throw new NullPointerException("Doc must not be null");\r |
73 | }\r |
74 | if (next == null) {\r |
75 | this.next = new SimpleMultiDoc(doc, lastDoc);\r |
76 | } else {\r |
77 | this.next.setNext(doc, lastDoc);\r |
78 | }\r |
79 | this.notifyListeners();\r |
80 | }\r |
81 | \r |
82 | public void setNext(Doc doc) {\r |
83 | setNext(doc, false);\r |
84 | }\r |
85 | \r |
86 | /**\r |
87 | *\r |
88 | */\r |
89 | \r |
90 | public Doc getDoc() throws IOException {\r |
91 | return this.doc;\r |
92 | }\r |
93 | \r |
94 | /**\r |
95 | *\r |
96 | */\r |
97 | public MultiDoc next() throws IOException {\r |
98 | if (!this.available()) {\r |
99 | throw new IllegalStateException("Next MultiDoc is not yet available");\r |
100 | }\r |
101 | return this.next;\r |
102 | }\r |
103 | \r |
104 | public boolean available() {\r |
105 | return (!this.lastDoc && this.next != null);\r |
106 | }\r |
107 | \r |
108 | public boolean isLast() {\r |
109 | return lastDoc;\r |
110 | }\r |
111 | \r |
112 | public String toString() {\r |
113 | return this.getClass() + " - " + this.doc.toString();\r |
114 | }\r |
115 | \r |
116 | public void addMultiDocListener(MultiDocListener listener) {\r |
117 | if (this.listeners == null) {\r |
118 | this.listeners = new ArrayList();\r |
119 | }\r |
120 | this.listeners.add(listener);\r |
121 | }\r |
122 | \r |
123 | private void notifyListeners() {\r |
124 | if (this.listeners != null) {\r |
125 | for (Iterator iter = this.listeners.iterator(); iter.hasNext();) {\r |
126 | MultiDocListener listener = (MultiDocListener) iter.next();\r |
127 | try {\r |
128 | listener.processEvent(new MultiDocEvent(this.next));\r |
129 | } catch (IOException e) {\r |
130 | //TODO handle exception appropriatly\r |
131 | }\r |
132 | }\r |
133 | }\r |
134 | }\r |
135 | }\r |