1 2 import javax.swing.tree.TreeModel; 3 import javax.swing.tree.TreePath; 4 import javax.swing.event.TreeModelListener; 5 import javax.swing.event.TreeModelEvent; 6 7 import java.util.Vector; 8 import java.util.HashMap; 9 import java.util.Enumeration; 10 11 import com.sun.star.accessibility.*; 12 import com.sun.star.uno.*; 13 14 import com.sun.star.uno.UnoRuntime; 15 import com.sun.star.uno.XInterface; 16 import com.sun.star.uno.Any; 17 import com.sun.star.lang.EventObject; 18 import com.sun.star.lang.XServiceInfo; 19 import com.sun.star.lang.XServiceName; 20 21 /** Objects of this class (usually one, singleton?) listen to accessible 22 events of all objects in all trees. 23 */ 24 public class EventListener 25 { 26 public boolean mbVerbose = false; 27 28 public EventListener (AccessibilityTreeModel aTreeModel) 29 { 30 maTreeModel = aTreeModel; 31 } 32 33 34 private static String objectToString(Object aObject) 35 { 36 if (aObject == null) 37 return null; 38 else 39 return aObject.toString(); 40 } 41 42 43 44 /** This method handles accessibility objects that are being disposed. 45 */ 46 public void disposing (XAccessibleContext xContext) 47 { 48 if (mbVerbose) 49 System.out.println("disposing " + xContext); 50 maTreeModel.removeNode (xContext); 51 } 52 53 /** This method is called from accessible objects that broadcast 54 modifications of themselves or from their children. The event is 55 processed only, except printing some messages, if the tree is not 56 locked. It should be locked during changes to its internal 57 structure like expanding nodes. 58 */ 59 public void notifyEvent (AccessibleEventObject aEvent) 60 { 61 EventHandler aHandler; 62 63 switch (aEvent.EventId) 64 { 65 case AccessibleEventId.CHILD: 66 aHandler = new ChildEventHandler (aEvent, maTreeModel); 67 break; 68 69 case AccessibleEventId.BOUNDRECT_CHANGED: 70 case AccessibleEventId.VISIBLE_DATA_CHANGED: 71 aHandler = new GeometryEventHandler (aEvent, maTreeModel); 72 break; 73 74 75 case AccessibleEventId.NAME_CHANGED: 76 case AccessibleEventId.DESCRIPTION_CHANGED: 77 case AccessibleEventId.STATE_CHANGED: 78 case AccessibleEventId.SELECTION_CHANGED: 79 aHandler = new ContextEventHandler (aEvent, maTreeModel); 80 break; 81 82 case AccessibleEventId.TABLE_MODEL_CHANGED: 83 case AccessibleEventId.TABLE_CAPTION_CHANGED: 84 case AccessibleEventId.TABLE_COLUMN_DESCRIPTION_CHANGED: 85 case AccessibleEventId.TABLE_COLUMN_HEADER_CHANGED: 86 case AccessibleEventId.TABLE_ROW_DESCRIPTION_CHANGED: 87 case AccessibleEventId.TABLE_ROW_HEADER_CHANGED: 88 case AccessibleEventId.TABLE_SUMMARY_CHANGED: 89 aHandler = new TableEventHandler (aEvent, maTreeModel); 90 break; 91 92 case AccessibleEventId.ACTION_CHANGED: 93 aHandler = new EventHandler (aEvent, maTreeModel); 94 break; 95 96 case AccessibleEventId.HYPERTEXT_CHANGED: 97 aHandler = new EventHandler (aEvent, maTreeModel); 98 break; 99 100 case AccessibleEventId.ACTIVE_DESCENDANT_CHANGED: 101 case AccessibleEventId.CARET_CHANGED: 102 case AccessibleEventId.TEXT_CHANGED: 103 case AccessibleEventId.VALUE_CHANGED: 104 aHandler = new EventHandler (aEvent, maTreeModel); 105 break; 106 107 default: 108 aHandler = null; 109 break; 110 } 111 112 if (aHandler == null) 113 System.out.println (" unhandled event"); 114 else 115 { 116 if (mbVerbose) 117 aHandler.Print (System.out); 118 aHandler.Process (); 119 } 120 } 121 122 123 private AccessibilityTreeModel maTreeModel; 124 } 125