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| package edu.rice.cs.util.swing; |
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| |
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| import java.awt.*; |
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4 |
| import javax.swing.*; |
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5 |
| import javax.swing.event.*; |
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| import java.util.*; |
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| |
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| |
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| public class CheckBoxJList extends JList implements ListSelectionListener { |
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| static Color listForeground; |
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| static Color listBackground; |
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| static Color listSelectionForeground; |
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| static Color listSelectionBackground; |
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| |
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| static { |
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16 |
0
| UIDefaults uid = UIManager.getLookAndFeel().getDefaults();
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17 |
0
| listForeground = uid.getColor("List.foreground");
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18 |
0
| listBackground = uid.getColor("List.background");
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19 |
0
| listSelectionForeground = uid.getColor("List.selectionForeground");
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20 |
0
| listSelectionBackground = uid.getColor("List.selectionBackground");
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21 |
| } |
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| |
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| HashSet<Integer> selectionCache = new HashSet<Integer>(); |
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| |
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0
| protected void init(Vector<?> listData, Vector<?> selData) {
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26 |
0
| setSelectionMode(ListSelectionModel.MULTIPLE_INTERVAL_SELECTION);
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27 |
0
| CheckBoxListCellRenderer r = new CheckBoxListCellRenderer();
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28 |
0
| if (selData != null) {
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0
| int i = 0;
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30 |
0
| for(Object t: listData) {
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0
| boolean sel = false;
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32 |
0
| if (selData.contains(t)) {
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0
| selectionCache.add(i);
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34 |
0
| getSelectionModel().addSelectionInterval(i, i);
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35 |
0
| sel = true;
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36 |
| } |
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37 |
0
| r.getListCellRendererComponent(this,
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| listData.get(i), |
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| i, |
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| sel, |
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| (i == 0)); |
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0
| ++i;
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| } |
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| } |
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45 |
0
| setCellRenderer(r);
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46 |
0
| addListSelectionListener(this);
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| } |
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| |
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49 |
0
| public CheckBoxJList(Vector<?> listData) {
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50 |
0
| super(listData);
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51 |
0
| init(listData, null);
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| } |
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| |
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54 |
0
| public CheckBoxJList(Vector<?> listData, Vector<?> selData) {
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55 |
0
| super(listData);
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56 |
0
| init(listData, selData);
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57 |
| } |
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| |
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59 |
0
| @SuppressWarnings({"unchecked"})
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60 |
| public CheckBoxJList(ListModel lm) { |
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61 |
0
| super(lm);
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0
| Vector<Object> listData = new Vector<Object>();
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63 |
0
| for(int i = 0; i < lm.getSize(); ++i) listData.add(lm.getElementAt(i));
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| init(listData, new Vector<Object>());
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| } |
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| |
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| |
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0
| public void valueChanged(ListSelectionEvent lse) {
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69 |
0
| if (!lse.getValueIsAdjusting()) {
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0
| removeListSelectionListener(this);
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| |
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| |
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0
| HashSet<Integer> newSelections = new HashSet<Integer>();
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0
| int size = getModel().getSize();
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75 |
0
| for (int i = 0; i < size; i++) {
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76 |
0
| if (getSelectionModel().isSelectedIndex(i)) {
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0
| newSelections.add(i);
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| } |
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| } |
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| |
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81 |
| |
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0
| Iterator<Integer> it = selectionCache.iterator();
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83 |
0
| while (it.hasNext()) {
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0
| int index = it.next();
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0
| getSelectionModel().addSelectionInterval(index, index);
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| } |
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| |
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| |
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0
| it = newSelections.iterator();
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90 |
0
| while (it.hasNext()) {
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| Integer nextInt = it.next();
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92 |
0
| if (selectionCache.contains(nextInt)) {
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93 |
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| getSelectionModel().removeSelectionInterval(nextInt, nextInt);
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| } |
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| else { |
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| getSelectionModel().addSelectionInterval(nextInt, nextInt);
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| } |
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| } |
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| |
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100 |
| |
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101 |
0
| selectionCache.clear();
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102 |
0
| for (int i = 0; i < size; i++) {
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103 |
0
| if (getSelectionModel().isSelectedIndex(i)) {
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104 |
0
| selectionCache.add(i);
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| } |
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| } |
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107 |
0
| addListSelectionListener(this);
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| } |
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109 |
| } |
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| |
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| private static class CheckBoxListCellRenderer extends JComponent implements ListCellRenderer { |
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| DefaultListCellRenderer defaultComp; |
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| JCheckBox checkbox; |
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114 |
0
| public CheckBoxListCellRenderer() {
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115 |
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| setLayout(new BorderLayout());
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116 |
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| defaultComp = new DefaultListCellRenderer();
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117 |
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| checkbox = new JCheckBox();
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118 |
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| add(checkbox, BorderLayout.WEST);
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119 |
0
| add(defaultComp, BorderLayout.CENTER);
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120 |
| } |
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| |
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122 |
0
| public Component getListCellRendererComponent(JList list,
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| Object value, |
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| int index, |
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| boolean isSelected, |
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| boolean cellHasFocus){ |
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127 |
0
| defaultComp.getListCellRendererComponent (list, value, index,
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| isSelected, cellHasFocus); |
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129 |
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| checkbox.setSelected(isSelected);
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130 |
0
| Component[] comps = getComponents();
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131 |
0
| for (int i = 0; i < comps.length; ++i) {
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132 |
0
| comps[i].setForeground(listForeground);
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133 |
0
| comps[i].setBackground(listBackground);
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134 |
| } |
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135 |
0
| return this;
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136 |
| } |
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137 |
| } |
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138 |
| } |
