toolkit/test/accessibility/ov/ObjectViewContainer.java

   1 package ov;
   2
   3 import java.awt.Color;
   4 import java.awt.Component;
   5 import java.awt.GridBagLayout;
   6 import java.awt.GridBagConstraints;
   7 import java.awt.Insets;
   8
   9 import java.util.Vector;
  10
  11 import java.lang.reflect.Method;
  12 import java.lang.NoSuchMethodException;
  13 import java.lang.IllegalAccessException;
  14 import java.lang.reflect.InvocationTargetException;
  15
  16 import javax.swing.JPanel;
  17 import javax.swing.JTree;
  18 import javax.swing.BorderFactory;
  19 import javax.swing.border.Border;
  20 import javax.swing.border.BevelBorder;
  21
  22 import com.sun.star.accessibility.XAccessibleContext;
  23 import com.sun.star.accessibility.XAccessibleComponent;
  24 import com.sun.star.accessibility.XAccessibleSelection;
  25 import com.sun.star.uno.UnoRuntime;
  26
  27
  28 public class ObjectViewContainer
  29     extends JPanel
  30 {
  31     public ObjectViewContainer ()
  32     {
  33         maViewTemplates = new Vector ();
  34         maViewBorder = BorderFactory.createBevelBorder (BevelBorder.RAISED);
  35         setLayout (new GridBagLayout ());
  36
  37         System.out.println ("ObjectViewContainer");
  38         RegisterView (ContextView.class);
  39         //        RegisterView (StateSetView.class);
  40         RegisterView (FocusView.class);
  41         RegisterView (TextView.class);
  42     }
  43
  44
  45
  46     /** Remove all existing views and create new ones according to the
  47         interfaces supported by the given object.
  48     */
  49     public void SetObject (XAccessibleContext xContext)
  50     {
  51         // Call Destroy at all views to give them a chance to release their
  52         // resources.
  53         int n = getComponentCount();
  54         for (int i=0; i<n; i++)
  55             ((ObjectView)getComponent(i)).Destroy();
  56         // Remove existing views.
  57         removeAll ();
  58
  59         // Add new views.
  60         for (int i=0; i<maViewTemplates.size(); i++)
  61         {
  62             try
  63             {
  64                 Class aViewClass = (Class)maViewTemplates.elementAt (i);
  65                 Method aCreateMethod = aViewClass.getDeclaredMethod (
  66                     "Create", new Class[] {
  67                         ObjectViewContainer.class,
  68                         XAccessibleContext.class});
  69                 if (aCreateMethod != null)
  70                 {
  71                     ObjectView aView = (ObjectView)
  72                         aCreateMethod.invoke (null, new Object[] {this, xContext});
  73                     Add (aView);
  74                 }
  75             }
  76             catch (NoSuchMethodException e)
  77             {System.err.println ("Caught exception while creating view " + i + " : " + e);}
  78             catch (IllegalAccessException e)
  79             {System.err.println ("Caught exception while creating view " + i + " : " + e);}
  80             catch (InvocationTargetException e)
  81             {System.err.println ("Caught exception while creating view " + i + " : " + e);}
  82         }
  83
  84         UpdateLayoutManager ();
  85
  86         // Now set the object at all views.
  87         n = getComponentCount();
  88         for (int i=0; i<n; i++)
  89             ((ObjectView)getComponent(i)).SetObject (xContext);
  90
  91         setPreferredSize (getLayout().preferredLayoutSize (this));
  92     }
  93
  94
  95     /** Add the given class to the list of classes which will be
  96         instantiated the next time an accessible object is set.
  97     */
  98     public void RegisterView (Class aObjectViewClass)
  99     {
 100         System.out.println ("registering " + aObjectViewClass);
 101         maViewTemplates.addElement (aObjectViewClass);
 102     }
 103
 104     /** Replace one view class with another.
 105     */
 106     public void ReplaceView (Class aObjectViewClass, Class aSubstitution)
 107     {
 108         int nIndex = maViewTemplates.indexOf (aObjectViewClass);
 109         if (nIndex >= 0)
 110             maViewTemplates.setElementAt (aSubstitution, nIndex);
 111     }
 112
 113     /** Add an object view and place it below all previously added views.
 114         @param aView
 115             This argument may be null.  In this case nothing happens.
 116     */
 117     private void Add (ObjectView aView)
 118     {
 119         if (aView != null)
 120         {
 121             GridBagConstraints constraints = new GridBagConstraints ();
 122             constraints.gridx = 0;
 123             constraints.gridy = getComponentCount();
 124             constraints.gridwidth = 1;
 125             constraints.gridheight = 1;
 126             constraints.weightx = 1;
 127             constraints.weighty = 0;
 128             constraints.ipadx = 2;
 129             constraints.ipady = 5;
 130             constraints.insets = new Insets (5,5,5,5);
 131             constraints.anchor = GridBagConstraints.NORTH;
 132             constraints.fill = GridBagConstraints.HORIZONTAL;
 133
 134             aView.setBorder (
 135                 BorderFactory.createTitledBorder (
 136                     maViewBorder, aView.GetTitle()));
 137
 138             add (aView, constraints);
 139         }
 140     }
 141
 142     /** Update the layout manager by setting the vertical weight of the
 143         bottom entry to 1 and so make it strech to over the available
 144         space.
 145
 146     */
 147     private void UpdateLayoutManager ()
 148     {
 149         // Adapt the layout manager.
 150         if (getComponentCount() > 0)
 151         {
 152             Component aComponent = getComponent (getComponentCount()-1);
 153             GridBagLayout aLayout = (GridBagLayout)getLayout();
 154             GridBagConstraints aConstraints = aLayout.getConstraints (aComponent);
 155             aConstraints.weighty = 1;
 156             aLayout.setConstraints (aComponent, aConstraints);
 157         }
 158     }
 159
 160     /// Observe this tree for selection changes and notify them to all
 161     /// children.
 162     private JTree maTree;
 163     private Border maViewBorder;
 164     /// List of view templates which are instantiated when new object is set.
 165     private Vector maViewTemplates;
 166 }