platform/util/src/com/intellij/ui/CheckBoxList.java

   1 package com.intellij.ui;
   2
   3 import javax.swing.*;
   4 import javax.swing.border.Border;
   5 import javax.swing.border.EmptyBorder;
   6 import javax.swing.plaf.basic.BasicRadioButtonUI;
   7 import java.awt.*;
   8 import java.awt.event.*;
   9
  10 /**
  11  * @author oleg
  12  */
  13 public class CheckBoxList extends JList {
  14   private static final Border noFocusBorder = new EmptyBorder(1, 1, 1, 1);
  15   private static final int DEFAULT_CHECK_BOX_WIDTH = 20;
  16
  17   public CheckBoxList(final ListModel dataModel, final CheckBoxListListener checkBoxListListener) {
  18     super(dataModel);
  19     setCellRenderer(new CellRenderer());
  20     setSelectionMode(ListSelectionModel.SINGLE_SELECTION);
  21     setBorder(BorderFactory.createEtchedBorder());
  22     addKeyListener(new KeyAdapter() {
  23       @Override
  24       public void keyTyped(KeyEvent e) {
  25         if (e.getKeyChar() == ' ') {
  26           int index = CheckBoxList.this.getSelectedIndex();
  27
  28           if (index >= 0) {
  29             JCheckBox checkbox = (JCheckBox)getModel().getElementAt(index);
  30             setSelected(checkbox, index, checkBoxListListener);
  31           }
  32         }
  33       }
  34     });
  35     addMouseListener(new MouseAdapter() {
  36       public void mouseClicked(MouseEvent e) {
  37         if (isEnabled()) {
  38           int index = locationToIndex(e.getPoint());
  39
  40           if (index != -1) {
  41             JCheckBox checkbox = (JCheckBox)getModel().getElementAt(index);
  42             int iconArea;
  43             try {
  44               iconArea = ((BasicRadioButtonUI)checkbox.getUI()).getDefaultIcon().getIconWidth();
  45             }
  46             catch (ClassCastException c) {
  47               iconArea = DEFAULT_CHECK_BOX_WIDTH;
  48             }
  49             if (e.getX() < iconArea) {
  50               setSelected(checkbox, index, checkBoxListListener);
  51             }
  52           }
  53         }
  54       }
  55     });
  56   }
  57
  58   private void setSelected(JCheckBox checkbox, int index, CheckBoxListListener checkBoxListListener) {
  59     boolean value = !checkbox.isSelected();
  60     checkbox.setSelected(value);
  61     repaint();
  62     checkBoxListListener.checkBoxSelectionChanged(index, value);
  63   }
  64
  65   private class CellRenderer implements ListCellRenderer {
  66     public Component getListCellRendererComponent(JList list, Object value, int index, boolean isSelected, boolean cellHasFocus) {
  67       JCheckBox checkbox = (JCheckBox)value;
  68       checkbox.setBackground(getBackgound(isSelected, checkbox));
  69       checkbox.setForeground(getForeGround(isSelected, checkbox));
  70       checkbox.setEnabled(isEnabled());
  71       checkbox.setFont(getFont(checkbox));
  72       checkbox.setFocusPainted(false);
  73       checkbox.setBorderPainted(true);
  74       checkbox.setBorder(isSelected ? UIManager.getBorder("List.focusCellHighlightBorder") : noFocusBorder);
  75       return checkbox;
  76     }
  77   }
  78
  79   protected Font getFont(final JCheckBox checkbox) {
  80     return getFont();
  81   }
  82
  83   protected Color getBackgound(final boolean isSelected, final JCheckBox checkbox) {
  84       return isSelected ? getSelectionBackground() : getBackground();
  85     }
  86
  87   protected Color getForeGround(final boolean isSelected, final JCheckBox checkbox) {
  88     return isSelected ? getSelectionForeground() : getForeground();
  89   }
  90
  91 }