blob: 0eab8be197a2abd0b45708a02b2fe0fbfbdddd80 (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
|
/*
* Copyright 1999-2004 The Apache Software Foundation.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
/* $Id$ */
package org.apache.fop.layoutmgr;
import org.apache.fop.fo.FObj;
import java.util.ArrayList;
import java.util.List;
import java.util.ListIterator;
import java.util.NoSuchElementException;
public class LMiter implements ListIterator {
private ListIterator baseIter;
private FObj curFO;
protected List listLMs;
protected int curPos = 0;
/** The LayoutProcessor to which this LMiter is attached **/
private LayoutProcessor lp;
public LMiter(LayoutProcessor lp, ListIterator bIter) {
this.lp = lp;
baseIter = bIter;
listLMs = new ArrayList(10);
}
public boolean hasNext() {
return (curPos < listLMs.size()) ? true : preLoadNext();
}
protected boolean preLoadNext() {
AddLMVisitor addLMVisitor = lp.getLayoutManagerLS().getAddLMVisitor();
// skip over child FObj's that don't add lms
while (baseIter != null && baseIter.hasNext()) {
Object theobj = baseIter.next();
if (theobj instanceof FObj) {
FObj fobj = (FObj) theobj;
//listLMs.add(fobj.getLayoutManager());
addLMVisitor.addLayoutManager(fobj, listLMs);
if (curPos < listLMs.size()) {
return true;
}
}
}
return false;
}
public boolean hasPrevious() {
return (curPos > 0);
}
public Object previous() throws NoSuchElementException {
if (curPos > 0) {
return listLMs.get(--curPos);
} else {
throw new NoSuchElementException();
}
}
public Object next() throws NoSuchElementException {
if (curPos < listLMs.size()) {
return listLMs.get(curPos++);
} else {
throw new NoSuchElementException();
}
}
public void remove() throws NoSuchElementException {
if (curPos > 0) {
listLMs.remove(--curPos);
// Note: doesn't actually remove it from the base!
} else {
throw new NoSuchElementException();
}
}
public void add(Object o) throws UnsupportedOperationException {
throw new UnsupportedOperationException("LMiter doesn't support add");
}
public void set(Object o) throws UnsupportedOperationException {
throw new UnsupportedOperationException("LMiter doesn't support set");
}
public int nextIndex() {
return curPos;
}
public int previousIndex() {
return curPos - 1;
}
}
|
