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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 import java.util.ArrayList  ;
58
59
66 public class RepeatablePageMasterAlternatives extends FObj
67 implements SubSequenceSpecifier {
68
69 private static final int INFINITE = -1;
70
71
72 public static class Maker extends FObj.Maker {
73 public FObj make(FObj parent, PropertyList propertyList,
74 String systemId, int line, int column)
75 throws FOPException {
76 return new RepeatablePageMasterAlternatives(parent, propertyList,
77 systemId, line, column);
78 }
79
80 }
81
82 public static FObj.Maker maker() {
83 return new RepeatablePageMasterAlternatives.Maker();
84 }
85
86 private PageSequenceMaster pageSequenceMaster;
87
88
92 private int maximumRepeats;
93 private int numberConsumed = 0;
94
95 private ArrayList conditionalPageMasterRefs;
96
97 public RepeatablePageMasterAlternatives(FObj parent, PropertyList propertyList,
98 String systemId, int line, int column)
99 throws FOPException {
100 super(parent, propertyList, systemId, line, column);
101
102 if (parent.getName().equals("fo:page-sequence-master")) {
103 this.pageSequenceMaster = (PageSequenceMaster)parent;
104 this.pageSequenceMaster.addSubsequenceSpecifier(this);
105 } else {
106 throw new FOPException("A fo:repeatable-page-master-alternatives"
107 + "must be child of fo:page-sequence-master, not "
108 + parent.getName(), systemId, line, column);
109 }
110
111 String mr = getProperty("maximum-repeats").getString();
112 if (mr.equals("no-limit")) {
113 this.maximumRepeats=INFINITE;
114 } else {
115 try {
116 this.maximumRepeats = Integer.parseInt(mr);
117 if (this.maximumRepeats < 0) {
118 log.debug("negative maximum-repeats: "+this.maximumRepeats);
119 this.maximumRepeats = 0;
120 }
121 } catch (NumberFormatException nfe) {
122 throw new FOPException("Invalid number for "
123 + "'maximum-repeats' property", systemId, line, column);
124 }
125 }
126 conditionalPageMasterRefs = new ArrayList ();
127 }
128
129 public String getName() {
130 return "fo:repeatable-page-master-alternatives";
131 }
132
133 public void addConditionalPageMasterReference(ConditionalPageMasterReference cpmr) {
134 this.conditionalPageMasterRefs.add(cpmr);
135 }
136
137 public String getNextPageMasterName(boolean isOddPage,
138 boolean isFirstPage,
139 boolean isEmptyPage) {
140 if (maximumRepeats != -1) {
141 if (numberConsumed < maximumRepeats) {
142 numberConsumed++;
143 } else {
144 return null;
145 }
146 }
147
148 for (int i = 0; i < conditionalPageMasterRefs.size(); i++) {
149 ConditionalPageMasterReference cpmr =
150 (ConditionalPageMasterReference)conditionalPageMasterRefs.get(i);
151 if (cpmr.isValid(isOddPage, isFirstPage, isEmptyPage)) {
152 return cpmr.getMasterName();
153 }
154 }
155 return null;
156 }
157
158 public void reset() {
159 this.numberConsumed = 0;
160 }
161
162 }
163 |
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