toolkit/test/accessibility/ov/SelectionView.java

   1 package ov;
   2
   3 import java.util.Vector;
   4
   5 import java.awt.event.ActionListener;
   6 import java.awt.event.ActionEvent;
   7
   8 import java.awt.BorderLayout;
   9 import java.awt.Dimension;
  10 import java.awt.GridBagLayout;
  11 import java.awt.GridBagConstraints;
  12
  13 import javax.swing.BoxLayout;
  14 import javax.swing.ButtonGroup;
  15 import javax.swing.JButton;
  16 import javax.swing.JCheckBox;
  17 import javax.swing.JLabel;
  18 import javax.swing.JList;
  19 import javax.swing.JPanel;
  20 import javax.swing.JOptionPane;
  21 import javax.swing.JRadioButton;
  22 import javax.swing.JScrollPane;
  23 import javax.swing.JToggleButton;
  24 import javax.swing.ListSelectionModel;
  25
  26
  27 import com.sun.star.accessibility.AccessibleEventId;
  28 import com.sun.star.accessibility.AccessibleEventObject;
  29 import com.sun.star.accessibility.AccessibleStateType;
  30 import com.sun.star.accessibility.XAccessible;
  31 import com.sun.star.accessibility.XAccessibleContext;
  32 import com.sun.star.accessibility.XAccessibleSelection;
  33 import com.sun.star.accessibility.XAccessibleStateSet;
  34
  35 import com.sun.star.uno.UnoRuntime;
  36 import com.sun.star.lang.IndexOutOfBoundsException;
  37
  38
  39 /** Display a list of children and select/deselect buttons
  40 */
  41 class SelectionView
  42     extends ListeningObjectView
  43     implements ActionListener
  44 {
  45     static public ObjectView Create (
  46         ObjectViewContainer aContainer,
  47         XAccessibleContext xContext)
  48     {
  49         XAccessibleSelection xSelection = (XAccessibleSelection)UnoRuntime.queryInterface(
  50                 XAccessibleSelection.class, xContext);
  51         if (xSelection != null)
  52             return new SelectionView(aContainer);
  53         else
  54             return null;
  55     }
  56
  57     public SelectionView (ObjectViewContainer aContainer)
  58     {
  59         super (aContainer);
  60         Layout();
  61     }
  62
  63     public String GetTitle ()
  64     {
  65         return "Selection";
  66     }
  67
  68     /** Create and arrange the widgets for this view.
  69     */
  70     private void Layout ()
  71     {
  72         setLayout (new GridBagLayout());
  73
  74         GridBagConstraints aConstraints = new GridBagConstraints();
  75
  76         // Label that shows wheter the selection is multi selectable.
  77         aConstraints.gridx = 0;
  78         aConstraints.gridy = 0;
  79         aConstraints.anchor = GridBagConstraints.WEST;
  80         maTypeLabel = new JLabel ();
  81         add (maTypeLabel, aConstraints);
  82
  83         // the JListBox
  84         maChildrenSelector = new JPanel ();
  85         maChildrenSelector.setPreferredSize (new Dimension (100,100));
  86         maChildrenSelector.setLayout (new BoxLayout (maChildrenSelector, BoxLayout.Y_AXIS));
  87
  88         aConstraints.gridx = 0;
  89         aConstraints.gridwidth = 4;
  90         aConstraints.gridy = 1;
  91         aConstraints.fill = GridBagConstraints.HORIZONTAL;
  92         add (new JScrollPane (maChildrenSelector,
  93                  JScrollPane.VERTICAL_SCROLLBAR_AS_NEEDED,
  94                  JScrollPane.HORIZONTAL_SCROLLBAR_AS_NEEDED),
  95             aConstraints);
  96
  97         JButton aButton;
  98         aButton = new JButton( "Select all" );
  99         aButton.setActionCommand( "Select all" );
 100         aButton.addActionListener( this );
 101         aConstraints.gridx = 0;
 102         aConstraints.gridwidth = 1;
 103         aConstraints.gridy = 2;
 104         aConstraints.fill = GridBagConstraints.NONE;
 105         aConstraints.anchor = GridBagConstraints.WEST;
 106         add (aButton, aConstraints);
 107
 108         aButton = new JButton( "Clear Selection" );
 109         aButton.setActionCommand( "Clear Selection" );
 110         aButton.addActionListener( this );
 111         aConstraints.gridx = 1;
 112         aConstraints.gridy = 2;
 113         aConstraints.weightx = 1;
 114         add (aButton, aConstraints);
 115
 116         setSize (getPreferredSize());
 117     }
 118
 119
 120     public void SetObject (XAccessibleContext xContext)
 121     {
 122         mxSelection = (XAccessibleSelection)UnoRuntime.queryInterface(
 123             XAccessibleSelection.class, xContext);
 124         super.SetObject (xContext);
 125     }
 126
 127
 128     public void Update ()
 129     {
 130         maChildrenSelector.removeAll ();
 131
 132         // Determine whether multi selection is possible.
 133         XAccessibleStateSet aStateSet = mxContext.getAccessibleStateSet();
 134         boolean bMultiSelectable = false;
 135         ButtonGroup aButtonGroup = null;
 136         if (aStateSet!=null && aStateSet.contains(AccessibleStateType.MULTI_SELECTABLE))
 137         {
 138             bMultiSelectable = true;
 139             maTypeLabel.setText ("multi selectable");
 140         }
 141         else
 142         {
 143             maTypeLabel.setText ("single selectable");
 144             aButtonGroup = new ButtonGroup ();
 145         }
 146
 147         int nCount = mxContext.getAccessibleChildCount();
 148         for (int i=0; i<nCount; i++)
 149         {
 150             try
 151             {
 152                 XAccessible xChild = mxContext.getAccessibleChild(i);
 153                 XAccessibleContext xChildContext = xChild.getAccessibleContext();
 154
 155                 String sName = i + " " + xChildContext.getAccessibleName();
 156                 JToggleButton aChild;
 157                 if (bMultiSelectable)
 158                     aChild = new JCheckBox (sName);
 159                 else
 160                 {
 161                     aChild = new JRadioButton (sName);
 162                     aButtonGroup.add (aChild);
 163                 }
 164
 165                 XAccessibleStateSet aChildStateSet = mxContext.getAccessibleStateSet();
 166                 aChild.setSelected (aChildStateSet!=null
 167                     && aChildStateSet.contains(AccessibleStateType.SELECTED));
 168
 169                 aChild.addActionListener (this);
 170                 maChildrenSelector.add (aChild);
 171
 172             }
 173             catch (IndexOutOfBoundsException e)
 174             {
 175             }
 176         }
 177     }
 178
 179
 180     void SelectAll()
 181     {
 182         mxSelection.selectAllAccessibleChildren();
 183     }
 184
 185     void ClearSelection()
 186     {
 187         mxSelection.clearAccessibleSelection();
 188     }
 189
 190
 191     /** Call the function associated with the pressed button.
 192     */
 193     public void actionPerformed (ActionEvent aEvent)
 194     {
 195         String sCommand = aEvent.getActionCommand();
 196
 197         if (sCommand.equals ("Clear Selection"))
 198             ClearSelection();
 199         else if (sCommand.equals ("Select all"))
 200             SelectAll();
 201         else
 202         {
 203             // Extract the child index from the widget text.
 204             String[] aWords = sCommand.split (" ");
 205             int nIndex = Integer.parseInt(aWords[0]);
 206             try
 207             {
 208                 if (((JToggleButton)aEvent.getSource()).isSelected())
 209                     mxSelection.selectAccessibleChild (nIndex);
 210                 else
 211                     mxSelection.deselectAccessibleChild (nIndex);
 212             }
 213             catch (IndexOutOfBoundsException e)
 214             {
 215                 System.err.println ("caught exception while changing selection: " + e);
 216             }
 217         }
 218     }
 219
 220
 221     public void notifyEvent (AccessibleEventObject aEvent)
 222     {
 223         if (aEvent.EventId == AccessibleEventId.SELECTION_CHANGED)
 224             Update ();
 225     }
 226
 227     private JPanel maChildrenSelector;
 228     private XAccessibleSelection mxSelection;
 229     private JLabel maTypeLabel;
 230 }