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/*
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 java.util.List;
import net.wotonomy.control.EODataSource;
import net.wotonomy.foundation.NSArray;
import net.wotonomy.foundation.NSNotification;
/**
* A convenience class for creating display group delegates.
* All methods of the delegate interface are implemented
* to do nothing.
*
* @author michael@mpowers.net
* @author $Author: cgruber $
* @version $Revision: 904 $
*/
public class DelegateAdapter implements EODisplayGroup.Delegate
{
/**
* Called when the specified data source fails
* to create an object for the specified display group.
*/
public void displayGroupCreateObjectFailed (
EODisplayGroup aDisplayGroup,
EODataSource aDataSource )
{
}
/**
* Called after the specified display group's
* data source is changed.
*/
public void displayGroupDidChangeDataSource (
EODisplayGroup aDisplayGroup )
{
}
/**
* Called after the specified display group's
* selection has changed.
*/
public void displayGroupDidChangeSelectedObjects (
EODisplayGroup aDisplayGroup )
{
}
/**
* Called after the specified display group's
* selection has changed.
*/
public void displayGroupDidChangeSelection (
EODisplayGroup aDisplayGroup )
{
}
/**
* Called after the specified object display group's
* selection has changed.
*/
public void displayGroupDidDeleteObject (
EODisplayGroup aDisplayGroup,
Object anObject )
{
}
/**
* Called after the specified display group
* has fetched the specified object list.
*/
public void displayGroupDidFetchObjects (
EODisplayGroup aDisplayGroup,
List anObjectList )
{
}
/**
* Called after the specified display group
* has inserted the specified object into
* its internal object list.
*/
public void displayGroupDidInsertObject (
EODisplayGroup aDisplayGroup,
Object anObject )
{
}
/**
* Called after the specified display group
* has set the specified value for the specified
* object and key.
*/
public void displayGroupDidSetValueForObject (
EODisplayGroup aDisplayGroup,
Object aValue,
Object anObject,
String aKey )
{
}
/**
* Called by the specified display group to
* determine what objects should be displayed
* for the objects in the specified list.
* @return An NSArray containing the objects
* to be displayed for the objects in the
* specified list.
*/
public NSArray displayGroupDisplayArrayForObjects (
EODisplayGroup aDisplayGroup,
List aList )
{
return new NSArray( aList );
}
/**
* Called by the specified display group before
* it attempts to change the selection.
* This implementation returns true.
* @return True to allow the selection to change,
* false otherwise.
*/
public boolean displayGroupShouldChangeSelection (
EODisplayGroup aDisplayGroup,
List aSelectionList )
{
return true;
}
/**
* Called by the specified display group before
* it attempts to delete the specified object.
* This implementation returns true.
* @return True to allow the object to be deleted
* false to prevent the deletion.
*/
public boolean displayGroupShouldDeleteObject (
EODisplayGroup aDisplayGroup,
Object anObject )
{
return true;
}
/**
* Called by the specified display group before
* it attempts display the specified alert to
* the user.
* This implementation returns true.
* @return True to allow the message to be
* displayed, false if you want to handle the
* alert yourself and suppress the display group's
* notification.
*/
public boolean displayGroupShouldDisplayAlert (
EODisplayGroup aDisplayGroup,
String aTitle,
String aMessage )
{
return true;
}
/**
* Called by the specified display group before
* it attempts fetch objects.
* This implementation returns true.
* @return True to allow the fetch to take place,
* false to prevent the fetch.
*/
public boolean displayGroupShouldFetch (
EODisplayGroup aDisplayGroup )
{
return true;
}
/**
* Called by the specified display group before
* it attempts to insert the specified object.
* This implementation returns true.
* @return True to allow the object to be inserted
* false to prevent the insertion.
*/
public boolean displayGroupShouldInsertObject (
EODisplayGroup aDisplayGroup,
Object anObject,
int anIndex )
{
return true;
}
/**
* No idea what this might indicate,
* nor what the notification indicates.
* This implementation returns true.
*/
public boolean displayGroupShouldRedisplay (
EODisplayGroup aDisplayGroup,
NSNotification aNotification )
{
return true;
}
/**
* No idea what this might indicate,
* nor what the notification indicates.
*/
public boolean displayGroupShouldRefetch (
EODisplayGroup aDisplayGroup,
NSNotification aNotification )
{
return true;
}
}
/*
* $Log$
* Revision 1.2 2006/02/18 23:14:35 cgruber
* Update imports and maven dependencies.
*
* Revision 1.1 2006/02/16 13:22:22 cgruber
* Check in all sources in eclipse-friendly maven-enabled packages.
*
* Revision 1.2 2003/08/06 23:07:52 chochos
* general code cleanup (mostly, removing unused imports)
*
* Revision 1.1 2001/01/24 14:23:17 mpowers
* Contributing DelegateAdapter.
*
*
*/
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