org.eclipse.jface.viewers
Interface IContentProvider

All Known Subinterfaces:

IMergeViewerContentProvider, IStructuredContentProvider, ITreeContentProvider

All Known Implementing Classes:

FileEditorMappingContentProvider, WorkbenchContentProvider

public interface IContentProvider

A content provider mediates between the viewer's model and the viewer itself.

See Also:

IViewer#setContentProvider

Method Summary

void	dispose() Disposes of this content provider.
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.

Method Detail

dispose

public void dispose()

Disposes of this content provider. This is called by the viewer when it is disposed.

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

inputChanged

public 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.

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 updated during this call, as it might be in the process of being disposed.

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