Initial import from SVN

1 files changed, 106 insertions, 0 deletions

diff --git a/projects/net.wotonomy.ui/src/main/java/net/wotonomy/ui/MirrorDetailAssociation.java b/projects/net.wotonomy.ui/src/main/java/net/wotonomy/ui/MirrorDetailAssociation.java
new file mode 100644
index 0000000..aeac376
--- /dev/null
+++ b/projects/net.wotonomy.ui/src/main/java/net/wotonomy/ui/MirrorDetailAssociation.java
@@ -0,0 +1,106 @@
+/*
+Wotonomy: OpenStep design patterns for pure Java applications.
+Copyright (C) 2001 Intersect Software Corporation
+
+This library is free software; you can redistribute it and/or
+modify it under the terms of the GNU Lesser General Public
+License as published by the Free Software Foundation; either
+version 2.1 of the License, or (at your option) any later version.
+
+This library is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+Lesser General Public License for more details.
+
+You should have received a copy of the GNU Lesser General Public
+License along with this library; if not, see http://www.gnu.org
+*/
+
+package net.wotonomy.ui;
+import net.wotonomy.foundation.NSArray;
+
+/**
+* This master detail association synchronizes the contents
+* and selection of the master group into the detail group.
+*/
+public class MirrorDetailAssociation extends MasterDetailAssociation{
+
+    /** 
+    * Standard constructor specifying the detail display group.
+    * @param displayGroup the detail display group of this 
+    * Master-Detail Association
+    */
+    public MirrorDetailAssociation(EODisplayGroup displayGroup){
+        super(displayGroup);
+    }
+
+    /**
+    * Called by subjectChanged() to requalify the controlled
+    * display group with the indexed object and the bound key.
+    * This implementation ignores both and sets the object array
+    * of the detail group to the displayed objects of the master
+    * and sets the selection to match.
+    */
+    protected void requalify()
+    {
+        EODisplayGroup detail = (EODisplayGroup) object();
+        EODisplayGroup master =
+            displayGroupForAspect( ParentAspect );
+
+        if ( master != null )
+        {
+            NSArray masterObjects = master.displayedObjects();
+            NSArray detailObjects = detail.displayedObjects();
+            int size = masterObjects.size();
+            boolean different = false;
+            
+            // see if lists contain the same object instances
+            if ( size == detailObjects.size() )
+            {
+                for ( int i = 0; i < size; i++ )
+                {
+                    if ( masterObjects.objectAtIndex(i) 
+                      != detailObjects.objectAtIndex(i) )
+                    {
+                        different = true;
+                        break;
+                    }
+                }
+            }
+            else // different sizes
+            {
+                different = true;
+            }
+            
+            // if different, sync contents and selection with master
+            if ( different )
+            {
+                detail.setObjectArray( masterObjects );
+                detail.setSelectionIndexes( master.selectionIndexes() );
+            }
+            else // if selection changed, sync selection with master
+            if ( master.selectionChanged() )
+            {
+                detail.setSelectionIndexes( master.selectionIndexes() );
+            }
+        }
+        else // no bound display group, clear
+        {
+            detail.setObjectArray( null );
+        }
+    }
+}
+/*
+ * $Log$
+ * Revision 1.1  2006/02/16 13:22:22  cgruber
+ * Check in all sources in eclipse-friendly maven-enabled packages.
+ *
+ * Revision 1.2  2001/07/05 22:13:28  mpowers
+ * Now only updating if master has actually changed.
+ *
+ * Revision 1.1  2001/05/29 19:57:47  mpowers
+ * Added some neglected files.
+ *
+ *
+ */
+