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1
29
30 package nextapp.echo2.app.table;
31
32 import java.io.Serializable  ;
33 import java.util.ArrayList ;
34 import java.util.EventListener ;
35 import java.util.Iterator ;
36 import java.util.List ;
37
38 import nextapp.echo2.app.event.EventListenerList;
39 import nextapp.echo2.app.event.TableColumnModelEvent;
40 import nextapp.echo2.app.event.TableColumnModelListener;
41
42
45 public class DefaultTableColumnModel
46 implements Serializable , TableColumnModel {
47
48
51 private List columns = new ArrayList ();
52
53
56 protected EventListenerList listenerList = new EventListenerList();
57
58
61 public DefaultTableColumnModel() {
62 super();
63 }
64
65
68 public void addColumn(TableColumn column) {
69 columns.add(column);
70 fireColumnAdded(new TableColumnModelEvent(this, -1, columns.size() - 1));
71 }
72
73
76 public void addColumnModelListener(TableColumnModelListener l) {
77 listenerList.addListener(TableColumnModelListener.class, l);
78 }
79
80
86 protected void fireColumnAdded(TableColumnModelEvent e) {
87 EventListener [] listeners = listenerList.getListeners(TableColumnModelListener.class);
88
89 for (int index = 0; index < listeners.length; ++index) {
90 ((TableColumnModelListener) listeners[index]).columnAdded(e);
91 }
92 }
93
94
100 protected void fireColumnMoved(TableColumnModelEvent e) {
101 EventListener [] listeners = listenerList.getListeners(TableColumnModelListener.class);
102
103 for (int index = 0; index < listeners.length; ++index) {
104 ((TableColumnModelListener) listeners[index]).columnMoved(e);
105 }
106 }
107
108
114 protected void fireColumnRemoved(TableColumnModelEvent e) {
115 EventListener [] listeners = listenerList.getListeners(TableColumnModelListener.class);
116
117 for (int index = 0; index < listeners.length; ++index) {
118 ((TableColumnModelListener) listeners[index]).columnRemoved(e);
119 }
120 }
121
122
125 public TableColumn getColumn(int index) {
126 if ((getColumnCount() - 1) < index) {
127 return null;
128 }
129
130 return (TableColumn) columns.get(index);
131 }
132
133
136 public int getColumnCount() {
137 return columns.size();
138 }
139
140
143 public int getColumnIndex(Object identifier) {
144 if (identifier == null) {
145 throw new IllegalArgumentException ("Null not allowed as identifier value.");
146 }
147
148 Iterator it = columns.iterator();
149 int index = 0;
150
151 while (it.hasNext()) {
152 TableColumn column = (TableColumn) it.next();
153 if (identifier.equals(column.getIdentifier())) {
154 return index;
155 }
156 ++index;
157 }
158
159 throw new IllegalArgumentException ("No column found with specified identifier: " + identifier);
160 }
161
162
165 public Iterator getColumns() {
166 return columns.iterator();
167 }
168
169
172 public void moveColumn(int columnIndex, int newIndex) {
173 if (columnIndex < 0 || columnIndex >= columns.size()) {
174 throw new IllegalArgumentException ("No column exists at index: " + columnIndex);
175 }
176 if (newIndex < 0 || newIndex >= columns.size()) {
177 throw new IllegalArgumentException ("Attempt to move column to invalid index: " + newIndex);
178 }
179
180 TableColumn column = (TableColumn) columns.remove(columnIndex);
181 columns.add(newIndex, column);
182 fireColumnMoved(new TableColumnModelEvent(this, columnIndex, newIndex));
183 }
184
185
188 public void removeColumn(TableColumn column) {
189 int columnIndex = columns.indexOf(column);
190 if (columnIndex == -1) {
191 return;
193 }
194 columns.remove(columnIndex);
195 fireColumnAdded(new TableColumnModelEvent(this, columnIndex, -1));
196 }
197
198
201 public void removeColumnModelListener(TableColumnModelListener l) {
202 listenerList.removeListener(TableColumnModelListener.class, l);
203 }
204 }
205 |
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