|
1
6 package com.nightlabs.ipanema.person.preferences;
7
8 import java.util.Collections  ;
9 import java.util.Comparator ;
10 import java.util.HashMap ;
11 import java.util.Iterator ;
12 import java.util.LinkedList ;
13 import java.util.List ;
14 import java.util.Map ;
15 import java.util.Set ;
16
17 import org.eclipse.jface.viewers.IStructuredContentProvider;
18 import org.eclipse.jface.viewers.Viewer;
19
20
23 public class BlockOrderListContentProvider implements IStructuredContentProvider
24 {
25 public BlockOrderListContentProvider() {
26 }
27
28 public Map structBlockDisplayOrder;
29 private List structBlockDisplayOrderEntryList;
30
31 public class Entry implements Map.Entry {
32
33 private Map.Entry entry;
34 public Entry(Map.Entry entry) {
35 this.entry = entry;
36 }
37
40 public Object getKey() {
41 return entry.getKey();
42 }
43
44
47 public Object getValue() {
48 if (internalValue == null)
49 return entry.getValue();
50 else
51 return internalValue;
52 }
53
54
55 private Object internalValue;
56
59 public Object setValue(Object value) {
60 return internalValue = value;
61 }
62
63 }
64
65 protected void refreshOrder() {
66 Set entrySet = structBlockDisplayOrder.entrySet();
67 structBlockDisplayOrderEntryList = new LinkedList ();
68 for (Iterator iter = entrySet.iterator(); iter.hasNext();) {
70 Map.Entry entry = (Map.Entry ) iter.next();
71 structBlockDisplayOrderEntryList.add(new Entry(entry));
72 }
73 sortList();
74 }
75
76 protected void sortList() {
77 Collections.sort(structBlockDisplayOrderEntryList,new Comparator () {
79 public int compare(Object o1, Object o2) {
80 if ((o1 instanceof Map.Entry ) && (o2 instanceof Map.Entry )) {
81 int p1, p2;
82 p1 = ((Integer ) ((Map.Entry )o1).getValue() ).intValue();
83 p2 = ((Integer ) ((Map.Entry )o2).getValue() ).intValue();
84 if (p1 < p2)
85 return -1;
86 else if (p1 > p2)
87 return 1;
88 else
89 return 0;
90 }
91 return 0;
92 }
93 });
94
95 }
96
99 public Object [] getElements(Object inputElement) {
100 if (inputElement != structBlockDisplayOrder) {
101 this.structBlockDisplayOrder = (Map )inputElement;
102 refreshOrder();
104 }
105 return structBlockDisplayOrderEntryList.toArray();
107 }
109
110
113 public void dispose() {
114 }
115
116
119 public void inputChanged(Viewer viewer, Object oldInput, Object newInput) {
120 if (structBlockDisplayOrderEntryList != null)
121 sortList();
122 }
124
125
126 public void moveUp(int priority) {
127 structBlockDisplayOrderEntryList.hashCode();
128 for (Iterator iter = structBlockDisplayOrderEntryList.iterator(); iter.hasNext();) {
129 Map.Entry entry = (Map.Entry ) iter.next();
130 int swapPriority = ((Integer )entry.getValue()).intValue();
131 if (swapPriority == priority)
132 entry.setValue(new Integer (priority-1));
133 else if (swapPriority == (priority-1))
134 entry.setValue(new Integer (priority));
135 }
136 sortList();
137 }
138
139 public void moveDown(int priority) {
140 structBlockDisplayOrderEntryList.hashCode();
141 for (Iterator iter = structBlockDisplayOrderEntryList.iterator(); iter.hasNext();) {
142 Map.Entry entry = (Map.Entry ) iter.next();
143 int swapPriority = ((Integer )entry.getValue()).intValue();
144 if (swapPriority == priority)
145 entry.setValue(new Integer (priority+1));
146 else if (swapPriority == (priority+1))
147 entry.setValue(new Integer (priority));
148 }
149 sortList();
150 }
151
152 public Map getStructBlockOrder() {
153 Map result = new HashMap ();
154 for (Iterator iter = structBlockDisplayOrderEntryList.iterator(); iter.hasNext();) {
155 Map.Entry entry = (Map.Entry ) iter.next();
156 result.put(entry.getKey(),entry.getValue());
157 }
158 return result;
159 }
160
161 }
162 |
Popular Tags |
Java API By Example, From Geeks To Geeks.