Package org.eclipse.jface.databinding.viewers

Interface IViewerUpdater<E>

Type Parameters:

E - type of the elements in the updated viewer

public interface IViewerUpdater<E>

A strategy interface for updating the elements in a StructuredViewer. Many structured viewer classes have similar methods for adding and removing elements, few of which are defined in common ancestor classes. This interface serves as a universal adapter for updating the elements in a viewer

Since:

1.3

See Also:

ObservableListContentProvider(IViewerUpdater), ObservableSetContentProvider(IViewerUpdater)

Method Summary

Modifier and Type	Method	Description
void	add(E[] elements)	Adds the elements to the viewer.
void	insert(E element, int position)	Insert the element into the viewer at the specified position.
void	move(E element, int oldPosition, int newPosition)	Moves the specified element from the specified old position to the specified new position.
void	remove(E[] elements)	Removes the elements from the viewer
void	remove(E element, int position)	Remove the element from the viewer
void	replace(E oldElement, E newElement, int position)	Replace the specified element at the given position with the new element.

Method Detail

insert

void insert(E element,
            int position)

Insert the element into the viewer at the specified position.

Parameters:

element - the element to add

position - the position of the element

remove

void remove(E element,
            int position)

Remove the element from the viewer

Parameters:

element - the element to remove

position - the position of the element

replace

void replace(E oldElement,
             E newElement,
             int position)

Replace the specified element at the given position with the new element.

Parameters:

oldElement - the element being replaced

newElement - the element that replaces oldElement

position - the position of the element being replaced.

move

void move(E element,
          int oldPosition,
          int newPosition)

Moves the specified element from the specified old position to the specified new position. No action is taken if the viewer has a sorter or filter(s).

Parameters:

element - the element being moved

oldPosition - the position of the element before it is moved

newPosition - the position of the element after it is moved

add

void add(E[] elements)

Adds the elements to the viewer.

Parameters:

elements - the elements to add

remove

void remove(E[] elements)

Removes the elements from the viewer

Parameters:

elements - the elements to remove