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package ov;
import java.util.Vector;
import java.awt.event.ActionListener;
import java.awt.event.ActionEvent;
import java.awt.BorderLayout;
import java.awt.Dimension;
import java.awt.GridBagLayout;
import java.awt.GridBagConstraints;
import javax.swing.BoxLayout;
import javax.swing.ButtonGroup;
import javax.swing.JButton;
import javax.swing.JCheckBox;
import javax.swing.JLabel;
import javax.swing.JList;
import javax.swing.JPanel;
import javax.swing.JOptionPane;
import javax.swing.JRadioButton;
import javax.swing.JScrollPane;
import javax.swing.JToggleButton;
import javax.swing.ListSelectionModel;
import com.sun.star.accessibility.AccessibleEventId;
import com.sun.star.accessibility.AccessibleEventObject;
import com.sun.star.accessibility.AccessibleStateType;
import com.sun.star.accessibility.XAccessible;
import com.sun.star.accessibility.XAccessibleContext;
import com.sun.star.accessibility.XAccessibleSelection;
import com.sun.star.accessibility.XAccessibleStateSet;
import com.sun.star.uno.UnoRuntime;
import com.sun.star.lang.IndexOutOfBoundsException;
/** Display a list of children and select/deselect buttons
*/
class SelectionView
extends ListeningObjectView
implements ActionListener
{
static public ObjectView Create (
ObjectViewContainer aContainer,
XAccessibleContext xContext)
{
XAccessibleSelection xSelection = (XAccessibleSelection)UnoRuntime.queryInterface(
XAccessibleSelection.class, xContext);
if (xSelection != null)
return new SelectionView(aContainer);
else
return null;
}
public SelectionView (ObjectViewContainer aContainer)
{
super (aContainer);
Layout();
}
public String GetTitle ()
{
return "Selection";
}
/** Create and arrange the widgets for this view.
*/
private void Layout ()
{
setLayout (new GridBagLayout());
GridBagConstraints aConstraints = new GridBagConstraints();
// Label that shows wheter the selection is multi selectable.
aConstraints.gridx = 0;
aConstraints.gridy = 0;
aConstraints.anchor = GridBagConstraints.WEST;
maTypeLabel = new JLabel ();
add (maTypeLabel, aConstraints);
// the JListBox
maChildrenSelector = new JPanel ();
maChildrenSelector.setPreferredSize (new Dimension (100,100));
maChildrenSelector.setLayout (new BoxLayout (maChildrenSelector, BoxLayout.Y_AXIS));
aConstraints.gridx = 0;
aConstraints.gridwidth = 4;
aConstraints.gridy = 1;
aConstraints.fill = GridBagConstraints.HORIZONTAL;
add (new JScrollPane (maChildrenSelector,
JScrollPane.VERTICAL_SCROLLBAR_AS_NEEDED,
JScrollPane.HORIZONTAL_SCROLLBAR_AS_NEEDED),
aConstraints);
JButton aButton;
aButton = new JButton( "Select all" );
aButton.setActionCommand( "Select all" );
aButton.addActionListener( this );
aConstraints.gridx = 0;
aConstraints.gridwidth = 1;
aConstraints.gridy = 2;
aConstraints.fill = GridBagConstraints.NONE;
aConstraints.anchor = GridBagConstraints.WEST;
add (aButton, aConstraints);
aButton = new JButton( "Clear Selection" );
aButton.setActionCommand( "Clear Selection" );
aButton.addActionListener( this );
aConstraints.gridx = 1;
aConstraints.gridy = 2;
aConstraints.weightx = 1;
add (aButton, aConstraints);
setSize (getPreferredSize());
}
public void SetObject (XAccessibleContext xContext)
{
mxSelection = (XAccessibleSelection)UnoRuntime.queryInterface(
XAccessibleSelection.class, xContext);
super.SetObject (xContext);
}
public void Update ()
{
maChildrenSelector.removeAll ();
// Determine whether multi selection is possible.
XAccessibleStateSet aStateSet = mxContext.getAccessibleStateSet();
boolean bMultiSelectable = false;
ButtonGroup aButtonGroup = null;
if (aStateSet!=null && aStateSet.contains(AccessibleStateType.MULTI_SELECTABLE))
{
bMultiSelectable = true;
maTypeLabel.setText ("multi selectable");
}
else
{
maTypeLabel.setText ("single selectable");
aButtonGroup = new ButtonGroup ();
}
int nCount = mxContext.getAccessibleChildCount();
for (int i=0; i<nCount; i++)
{
try
{
XAccessible xChild = mxContext.getAccessibleChild(i);
XAccessibleContext xChildContext = xChild.getAccessibleContext();
String sName = i + " " + xChildContext.getAccessibleName();
JToggleButton aChild;
if (bMultiSelectable)
aChild = new JCheckBox (sName);
else
{
aChild = new JRadioButton (sName);
aButtonGroup.add (aChild);
}
XAccessibleStateSet aChildStateSet = mxContext.getAccessibleStateSet();
aChild.setSelected (aChildStateSet!=null
&& aChildStateSet.contains(AccessibleStateType.SELECTED));
aChild.addActionListener (this);
maChildrenSelector.add (aChild);
}
catch (IndexOutOfBoundsException e)
{
}
}
}
void SelectAll()
{
mxSelection.selectAllAccessible();
}
void ClearSelection()
{
mxSelection.clearAccessibleSelection();
}
/** Call the function associated with the pressed button.
*/
public void actionPerformed (ActionEvent aEvent)
{
String sCommand = aEvent.getActionCommand();
if (sCommand.equals ("Clear Selection"))
ClearSelection();
else if (sCommand.equals ("Select all"))
SelectAll();
else
{
// Extract the child index from the widget text.
String[] aWords = sCommand.split (" ");
int nIndex = Integer.parseInt(aWords[0]);
try
{
if (((JToggleButton)aEvent.getSource()).isSelected())
mxSelection.selectAccessibleChild (nIndex);
else
mxSelection.deselectAccessibleChild (nIndex);
}
catch (IndexOutOfBoundsException e)
{
System.err.println ("caught exception while changing selection: " + e);
}
}
}
public void notifyEvent (AccessibleEventObject aEvent)
{
if (aEvent.EventId == AccessibleEventId.SELECTION_CHANGED)
Update ();
}
private JPanel maChildrenSelector;
private XAccessibleSelection mxSelection;
private JLabel maTypeLabel;
}
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