org.eclipse.net4j.util.ui
Class DelegatingContentProvider

java.lang.Object
  extended by org.eclipse.net4j.util.ui.DelegatingContentProvider
All Implemented Interfaces:
IContentProvider, IStructuredContentProvider

public class DelegatingContentProvider
extends Object
implements IStructuredContentProvider

Author:
Eike Stepper

Field Summary
static String NONE
           
 
Constructor Summary
DelegatingContentProvider(IStructuredContentProvider delegate)
           
DelegatingContentProvider(IStructuredContentProvider delegate, boolean optional)
           
 
Method Summary
 void dispose()
          Disposes of this content provider.
 IStructuredContentProvider getDelegate()
           
 Object[] getElements(Object inputElement)
          Returns the elements to display in the viewer when its input is set to the given element.
 void inputChanged(Viewer viewer, Object oldInput, Object newInput)
          Notifies this content provider that the given viewer's input has been switched to a different element.
 boolean isOptional()
           
 
Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait
 

Field Detail

NONE

public static final String NONE
See Also:
Constant Field Values
Constructor Detail

DelegatingContentProvider

public DelegatingContentProvider(IStructuredContentProvider delegate,
                                 boolean optional)

DelegatingContentProvider

public DelegatingContentProvider(IStructuredContentProvider delegate)
Method Detail

getDelegate

public IStructuredContentProvider getDelegate()

isOptional

public boolean isOptional()

dispose

public void dispose()
Description copied from interface: org.eclipse.jface.viewers.IContentProvider
Disposes of this content provider. This is called by the viewer when it is disposed.

The viewer should not be updated during this call, as it is in the process of being disposed.

Specified by:
dispose in interface IContentProvider

getElements

public Object[] getElements(Object inputElement)
Description copied from interface: org.eclipse.jface.viewers.IStructuredContentProvider
Returns the elements to display in the viewer when its input is set to the given element. These elements can be presented as rows in a table, items in a list, etc. The result is not modified by the viewer.

Specified by:
getElements in interface IStructuredContentProvider
Parameters:
inputElement - the input element
Returns:
the array of elements to display in the viewer

inputChanged

public void inputChanged(Viewer viewer,
                         Object oldInput,
                         Object newInput)
Description copied from interface: org.eclipse.jface.viewers.IContentProvider
Notifies this content provider that the given viewer's input has been switched to a different element.

A typical use for this method is registering the content provider as a listener to changes on the new input (using model-specific means), and deregistering the viewer from the old input. In response to these change notifications, the content provider should update the viewer (see the add, remove, update and refresh methods on the viewers).

The viewer should not be updated during this call, as it might be in the process of being disposed.

Specified by:
inputChanged in interface IContentProvider
Parameters:
viewer - the viewer
oldInput - the old input element, or null if the viewer did not previously have an input
newInput - the new input element, or null if the viewer does not have an input


Copyright (c) 2004 - 2011 Eike Stepper (Berlin, Germany) and others.