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1
51 package org.apache.fop.fo.pagination;
52
53 import org.apache.fop.fo.*;
54 import org.apache.fop.apps.FOPException;
55
56
63 public class RepeatablePageMasterReference extends PageMasterReference
64 implements SubSequenceSpecifier {
65
66 private static final int INFINITE = -1;
67
68 public static class Maker extends FObj.Maker {
69 public FObj make(FObj parent, PropertyList propertyList,
70 String  systemId, int line, int column)
71 throws FOPException {
72 return new RepeatablePageMasterReference(parent, propertyList,
73 systemId, line, column);
74 }
75
76 }
77
78 public static FObj.Maker maker() {
79 return new RepeatablePageMasterReference.Maker();
80 }
81
82 private int maximumRepeats;
83 private int numberConsumed = 0;
84
85 public RepeatablePageMasterReference(FObj parent, PropertyList propertyList,
86 String systemId, int line, int column)
87 throws FOPException {
88 super(parent, propertyList, systemId, line, column);
89 if (getProperty("master-reference") != null) {
90 this.masterName = getProperty("master-reference").getString();
91 if (parent.getName().equals("fo:page-sequence-master")) {
92 PageSequenceMaster pageSequenceMaster = (PageSequenceMaster)parent;
93 pageSequenceMaster.addSubsequenceSpecifier(this);
94 } else {
95 throw new FOPException("A fo:repeatable-page-master-reference must be child of fo:page-sequence-master, not "
96 + parent.getName(), systemId, line, column);
97 }
98 } else {
99 log.warn("A fo:repeatable-page-master-reference does not have a master-reference and so is being ignored");
100 }
101 String mr = getProperty("maximum-repeats").getString();
102 if (mr.equals("no-limit")) {
103 this.maximumRepeats = INFINITE;
104 } else {
105 try {
106 this.maximumRepeats = Integer.parseInt(mr);
107 if (this.maximumRepeats < 0) {
108 log.debug("negative maximum-repeats: "+this.maximumRepeats);
109 this.maximumRepeats = 0;
110 }
111 } catch (NumberFormatException nfe) {
112 throw new FOPException("Invalid number '" + mr
113 + "'for 'maximum-repeats' property",
114 systemId, line, column);
115 }
116 }
117 }
118
119 public String getName() {
120 return "fo:repeatable-page-master-reference";
121 }
122
123 public String getNextPageMasterName(boolean isOddPage,
124 boolean isFirstPage,
125 boolean isEmptyPage) {
126 if (maximumRepeats != INFINITE) {
127 if (numberConsumed < maximumRepeats) {
128 numberConsumed++;
129 } else {
130 return null;
131 }
132 }
133 return getMasterName();
134 }
135
136 public void reset() {
137 this.numberConsumed = 0;
138 }
139
140 }
141 |
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