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org.eclipse.core.databinding.observable.list
Class ListDiffVisitor
java.lang.Object
org.eclipse.core.databinding.observable.list.ListDiffVisitor
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public abstract class ListDiffVisitor
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Object
A visitor for processing differences in a ListDiff.
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Since:
- 1.1
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See Also:
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ListDiff.accept(ListDiffVisitor)
Method Summary
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abstract void
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handleAdd
(int index,
Object element)
Notifies the visitor that element was added to the list at
position index . |
void
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handleMove
(int oldIndex,
int newIndex,
Object element)
Notifies the visitor that element was moved in the list
from position oldIndex to position newIndex . |
abstract void
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handleRemove
(int index,
Object element)
Notifies the visitor that element was removed from the
list at position index . |
void
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handleReplace
(int index,
Object oldElement,
Object newElement)
Notifies the visitor that oldElement , located at position
index in the list, was replaced by newElement . |
Methods inherited from class java.lang.
Object
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clone,
equals,
finalize,
getClass,
hashCode,
notify,
notifyAll,
toString,
wait,
wait,
wait
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ListDiffVisitor
public ListDiffVisitor()
handleAdd
public abstract void handleAdd(int index,
Object element)
- Notifies the visitor that
element was added to the list at
position index .
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Parameters:
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index - the index where the element was added -
element - the element that was added
handleRemove
public abstract void handleRemove(int index,
Object element)
- Notifies the visitor that
element was removed from the
list at position index .
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Parameters:
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index - the index where the element was removed -
element - the element that was removed
handleMove
public void handleMove(int oldIndex,
int newIndex,
Object element)
- Notifies the visitor that
element was moved in the list
from position oldIndex to position newIndex .
The default implementation of this method calls
handleRemove(int, Object) with the old position, then
handleAdd(int, Object) with the new position. Clients which are
interested in recognizing "moves" in a list (i.e. calls to
IObservableList.move(int, int) ) should override this method.
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Parameters:
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oldIndex - the index that the element was moved from. -
newIndex - the index that the element was moved to. -
element - the element that was moved -
See Also:
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IObservableList.move(int, int)
handleReplace
public void handleReplace(int index,
Object oldElement,
Object newElement)
- Notifies the visitor that
oldElement , located at position
index in the list, was replaced by newElement .
The default implementation of this method calls
handleRemove(int, Object) with the old element, then
handleAdd(int, Object) with the new element. Clients which are
interested in recognizing "replaces" in a list (i.e. calls to
List.set(int, Object)
) should override this method.
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Parameters:
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index - the index where the element was replaced. -
oldElement - the element being replaced. -
newElement - the element that replaced oldElement. -
See Also:
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List.set(int, Object)
Guidelines for using Eclipse APIs.
Copyright (c) Eclipse contributors and others 2000, 2008. All rights reserved.
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