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package ov;
import java.awt.Color;
import java.awt.Component;
import java.awt.GridBagLayout;
import java.awt.GridBagConstraints;
import java.awt.Insets;
import java.util.Vector;
import java.lang.reflect.Method;
import java.lang.NoSuchMethodException;
import java.lang.IllegalAccessException;
import java.lang.reflect.InvocationTargetException;
import javax.swing.JPanel;
import javax.swing.JTree;
import javax.swing.BorderFactory;
import javax.swing.border.Border;
import javax.swing.border.BevelBorder;
import com.sun.star.accessibility.XAccessibleContext;
import com.sun.star.accessibility.XAccessibleComponent;
import com.sun.star.accessibility.XAccessibleSelection;
import com.sun.star.uno.UnoRuntime;
public class ObjectViewContainer
extends JPanel
{
public ObjectViewContainer ()
{
maViewTemplates = new Vector ();
maViewBorder = BorderFactory.createBevelBorder (BevelBorder.RAISED);
setLayout (new GridBagLayout ());
System.out.println ("ObjectViewContainer");
RegisterView (ContextView.class);
// RegisterView (StateSetView.class);
RegisterView (FocusView.class);
RegisterView (TextView.class);
}
/** Remove all existing views and create new ones according to the
interfaces supported by the given object.
*/
public void SetObject (XAccessibleContext xContext)
{
// Call Destroy at all views to give them a chance to release their
// resources.
int n = getComponentCount();
for (int i=0; i<n; i++)
((ObjectView)getComponent(i)).Destroy();
// Remove existing views.
removeAll ();
// Add new views.
for (int i=0; i<maViewTemplates.size(); i++)
{
try
{
Class aViewClass = (Class)maViewTemplates.elementAt (i);
Method aCreateMethod = aViewClass.getDeclaredMethod (
"Create", new Class[] {
ObjectViewContainer.class,
XAccessibleContext.class});
if (aCreateMethod != null)
{
ObjectView aView = (ObjectView)
aCreateMethod.invoke (null, new Object[] {this, xContext});
Add (aView);
}
}
catch (NoSuchMethodException e)
{System.err.println ("Caught exception while creating view " + i + " : " + e);}
catch (IllegalAccessException e)
{System.err.println ("Caught exception while creating view " + i + " : " + e);}
catch (InvocationTargetException e)
{System.err.println ("Caught exception while creating view " + i + " : " + e);}
}
UpdateLayoutManager ();
// Now set the object at all views.
n = getComponentCount();
for (int i=0; i<n; i++)
((ObjectView)getComponent(i)).SetObject (xContext);
setPreferredSize (getLayout().preferredLayoutSize (this));
}
/** Add the given class to the list of classes which will be
instantiated the next time an accessible object is set.
*/
public void RegisterView (Class aObjectViewClass)
{
System.out.println ("registering " + aObjectViewClass);
maViewTemplates.addElement (aObjectViewClass);
}
/** Replace one view class with another.
*/
public void ReplaceView (Class aObjectViewClass, Class aSubstitution)
{
int nIndex = maViewTemplates.indexOf (aObjectViewClass);
if (nIndex >= 0)
maViewTemplates.setElementAt (aSubstitution, nIndex);
}
/** Add an object view and place it below all previously added views.
@param aView
This argument may be null. In this case nothing happens.
*/
private void Add (ObjectView aView)
{
if (aView != null)
{
GridBagConstraints constraints = new GridBagConstraints ();
constraints.gridx = 0;
constraints.gridy = getComponentCount();
constraints.gridwidth = 1;
constraints.gridheight = 1;
constraints.weightx = 1;
constraints.weighty = 0;
constraints.ipadx = 2;
constraints.ipady = 5;
constraints.insets = new Insets (5,5,5,5);
constraints.anchor = GridBagConstraints.NORTH;
constraints.fill = GridBagConstraints.HORIZONTAL;
aView.setBorder (
BorderFactory.createTitledBorder (
maViewBorder, aView.GetTitle()));
add (aView, constraints);
}
}
/** Update the layout manager by setting the vertical weight of the
bottom entry to 1 and so make it strech to over the available
space.
*/
private void UpdateLayoutManager ()
{
// Adapt the layout manager.
if (getComponentCount() > 0)
{
Component aComponent = getComponent (getComponentCount()-1);
GridBagLayout aLayout = (GridBagLayout)getLayout();
GridBagConstraints aConstraints = aLayout.getConstraints (aComponent);
aConstraints.weighty = 1;
aLayout.setConstraints (aComponent, aConstraints);
}
}
/// Observe this tree for selection changes and notify them to all
/// children.
private JTree maTree;
private Border maViewBorder;
/// List of view templates which are instantiated when new object is set.
private Vector maViewTemplates;
}
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