EventBuffer

java.lang.Object
- org.gvsig.fmap.mapcontext.events.listeners.EventBuffer

All Implemented Interfaces:

ViewPortListener, LayerCollectionListener, LayerListener, SelectionListener, LegendListener
```
public class EventBuffer
extends Object
implements LegendListener, LayerCollectionListener, SelectionListener, ViewPortListener, LayerListener
```
EventBuffer represents a buffer of events that allows store listeners of events produced in layers of a MapContext instance, and configure its dispatching mode.

The dispatching mode:
- true : dispatches each new event received.
- false : accumulates all new events received in a internal buffer, and only will dispatch them (according to the order they were received) when changes the mode.
See Also:

LegendListener, LayerCollectionListener, SelectionListener, ViewPortListener, LegendListener

Constructor Summary

Constructors
Constructor and Description

EventBuffer()

Constructors
Constructor and Description
`EventBuffer()`

Method Summary

All Methods Instance Methods Concrete Methods
Modifier and Type	Method and Description
`void`	`activationChanged(LayerEvent e)` Called when the activation of a layer has changed.
`boolean`	`addAtomicEventListener(AtomicEventListener listener)` Appends, if wasn't, the specified listener to the end of the internal list of atomic event listeners.
`void`	`backColorChanged(ColorEvent e)` Called when the background color of the view port has changed.
`void`	`beginAtomicEvent()` Enables buffer in accumulation event mode.
`void`	`drawValueChanged(LayerEvent e)` Called when a draw value of a layer has changed.
`void`	`editionChanged(LayerEvent e)` Called when the edition of a layer has changed.
`void`	`endAtomicEvent()` Disables buffer in accumulation event mode.
`void`	`extentChanged(ExtentEvent e)` Called when the extent of the view port has changed.
`void`	`layerAdded(LayerCollectionEvent e)` Called when a layer has been added or replaced in the internal list of layers.
`void`	`layerAdding(LayerCollectionEvent e)` Called when a layer is just going to be added or replaced in the internal list of layers.
`void`	`layerMoved(LayerPositionEvent e)` Called when a layer has been moved in the internal list of layers.
`void`	`layerMoving(LayerPositionEvent e)` Called when a layer is just going to be moved in the internal list of layers.
`void`	`layerRemoved(LayerCollectionEvent e)` Called when a layer has been removed from the internal list of layers.
`void`	`layerRemoving(LayerCollectionEvent e)` Called when a layer is just going to be removed from the internal list of layers.
`void`	`legendChanged(LegendChangedEvent e)` Called when the legend of a vector layer has changed.
`void`	`nameChanged(LayerEvent e)` Called when the name of a layer has changed.
`void`	`projectionChanged(ProjectionEvent e)` Called when the projection of the view port has changed.
`boolean`	`removeAtomicEventListener(AtomicEventListener listener)` Removes a single instance of the `AtomicEventListener` from the internal list, if it is present (optional operation).
`void`	`selectionChanged(SelectionEvent e)` Called when the selection in a vector layer has changed.
`void`	`visibilityChanged(LayerCollectionEvent e)` Called when the visibility of the collection of layers has changed.
`void`	`visibilityChanged(LayerEvent e)` Called when the visibility of a layer has changed.

Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

- Constructor Detail
  - EventBuffer
```
public EventBuffer()
```
- Method Detail
  - beginAtomicEvent
```
public void beginAtomicEvent()
```
    Enables buffer in accumulation event mode.
    
    All new events received, will be accumulated and won't notified to their respective listeners, until this buffer would received a call to endAtomicEvent.
    
    See Also:
    
    endAtomicEvent()
  - endAtomicEvent
```
public void endAtomicEvent()
```
    Disables buffer in accumulation event mode.
    
    All events accumulated will be notify to their respective listeners, in the same order as they arrived.
    
    See Also:
    
    beginAtomicEvent()
  - legendChanged
```
public void legendChanged(LegendChangedEvent e)
```
    Description copied from interface: LegendListener
    
    Called when the legend of a vector layer has changed.
    
    Specified by:
    
    legendChanged in interface LegendListener
    
    Parameters:
    
    e - the LegendChangedEvent contains contextual information about the event
  - layerAdded
```
public void layerAdded(LayerCollectionEvent e)
```
    Description copied from interface: LayerCollectionListener
    
    Called when a layer has been added or replaced in the internal list of layers.
    
    Specified by:
    
    layerAdded in interface LayerCollectionListener
    
    Parameters:
    
    e - a layer collection event object
  - layerMoved
```
public void layerMoved(LayerPositionEvent e)
```
    Description copied from interface: LayerCollectionListener
    
    Called when a layer has been moved in the internal list of layers.
    
    Specified by:
    
    layerMoved in interface LayerCollectionListener
    
    Parameters:
    
    e - a layer collection event object
  - layerRemoved
```
public void layerRemoved(LayerCollectionEvent e)
```
    Description copied from interface: LayerCollectionListener
    
    Called when a layer has been removed from the internal list of layers.
    
    Specified by:
    
    layerRemoved in interface LayerCollectionListener
    
    Parameters:
    
    e - a layer collection event object
  - layerAdding
```
public void layerAdding(LayerCollectionEvent e)
                 throws CancelationException
```
    Description copied from interface: LayerCollectionListener
    
    Called when a layer is just going to be added or replaced in the internal list of layers.
    
    Specified by:
    
    layerAdding in interface LayerCollectionListener
    
    Parameters:
    
    e - a layer collection event object
    
    Throws:
    
    CancelationException - if cancels the adding operation, this exception will have the message that user will see.
  - layerMoving
```
public void layerMoving(LayerPositionEvent e)
                 throws CancelationException
```
    Description copied from interface: LayerCollectionListener
    
    Called when a layer is just going to be moved in the internal list of layers.
    
    Specified by:
    
    layerMoving in interface LayerCollectionListener
    
    Parameters:
    
    e - a layer collection event object
    
    Throws:
    
    CancelationException - if cancels the moving operation, this exception will have the message that user will see.
  - layerRemoving
```
public void layerRemoving(LayerCollectionEvent e)
                   throws CancelationException
```
    Description copied from interface: LayerCollectionListener
    
    Called when a layer is just going to be removed from the internal list of layers.
    
    Specified by:
    
    layerRemoving in interface LayerCollectionListener
    
    Parameters:
    
    e - a layer collection event object
    
    Throws:
    
    CancelationException - if cancels the removing operation, this exception will have the message that user will see.
  - visibilityChanged
```
public void visibilityChanged(LayerCollectionEvent e)
                       throws CancelationException
```
    Description copied from interface: LayerCollectionListener
    
    Called when the visibility of the collection of layers has changed.
    
    Specified by:
    
    visibilityChanged in interface LayerCollectionListener
    
    Parameters:
    
    e - a layer collection event object
    
    Throws:
    
    CancelationException - if cancels the operation of change visibility, this exception will have the message that user will see.
  - selectionChanged
```
public void selectionChanged(SelectionEvent e)
```
    Description copied from interface: SelectionListener
    
    Called when the selection in a vector layer has changed.
    
    The SelectionEvent event must be launched invoking the fireSelectionEvents method of the layer.
    
    Specified by:
    
    selectionChanged in interface SelectionListener
    
    Parameters:
    
    e - a selection event on a vector layer
  - extentChanged
```
public void extentChanged(ExtentEvent e)
```
    Description copied from interface: ViewPortListener
    
    Called when the extent of the view port has changed.
    
    Specified by:
    
    extentChanged in interface ViewPortListener
    
    Parameters:
    
    e - an extend event object
  - addAtomicEventListener
```
public boolean addAtomicEventListener(AtomicEventListener listener)
```
    Appends, if wasn't, the specified listener to the end of the internal list of atomic event listeners.
    
    Parameters:
    
    listener - an object that implements the atomic event listener
    
    Returns:
    
    true if has added the listener successfully; otherwise false
    
    See Also:
    
    removeAtomicEventListener(AtomicEventListener), fireAtomicEventListener()
  - removeAtomicEventListener
```
public boolean removeAtomicEventListener(AtomicEventListener listener)
```
    Removes a single instance of the AtomicEventListener from the internal list, if it is present (optional operation). Returns true if the list contained the specified element (or equivalently, if the list changed as a result of the call).
    
    Parameters:
    
    o - element to be removed from this list, if present
    
    Returns:
    
    true if the list contained the specified element
    
    See Also:
    
    addAtomicEventListener(AtomicEventListener), fireAtomicEventListener()
  - visibilityChanged
```
public void visibilityChanged(LayerEvent e)
```
    Description copied from interface: LayerListener
    
    Called when the visibility of a layer has changed.
    
    Specified by:
    
    visibilityChanged in interface LayerListener
    
    Parameters:
    
    e - a visibility changed layer event object
  - activationChanged
```
public void activationChanged(LayerEvent e)
```
    Description copied from interface: LayerListener
    
    Called when the activation of a layer has changed.
    
    Specified by:
    
    activationChanged in interface LayerListener
    
    Parameters:
    
    e - an activation changed layer event object
  - nameChanged
```
public void nameChanged(LayerEvent e)
```
    Description copied from interface: LayerListener
    
    Called when the name of a layer has changed.
    
    Specified by:
    
    nameChanged in interface LayerListener
    
    Parameters:
    
    e - a name changed layer event object
  - backColorChanged
```
public void backColorChanged(ColorEvent e)
```
    Description copied from interface: ViewPortListener
    
    Called when the background color of the view port has changed.
    
    Specified by:
    
    backColorChanged in interface ViewPortListener
    
    Parameters:
    
    e - a color event object
  - editionChanged
```
public void editionChanged(LayerEvent e)
```
    Description copied from interface: LayerListener
    
    Called when the edition of a layer has changed.
    
    Specified by:
    
    editionChanged in interface LayerListener
    
    Parameters:
    
    e - an edition changed layer event object
  - projectionChanged
```
public void projectionChanged(ProjectionEvent e)
```
    Description copied from interface: ViewPortListener
    
    Called when the projection of the view port has changed.
    
    Specified by:
    
    projectionChanged in interface ViewPortListener
    
    Parameters:
    
    e - a projection event object
  - drawValueChanged
```
public void drawValueChanged(LayerEvent e)
```
    Description copied from interface: LayerListener
    
    Called when a draw value of a layer has changed.
    
    Specified by:
    
    drawValueChanged in interface LayerListener
    
    Parameters:
    
    e - an edition changed layer event object

Class EventBuffer

Constructor Summary

Method Summary

Methods inherited from class java.lang.Object

Constructor Detail

EventBuffer

Method Detail

beginAtomicEvent

endAtomicEvent

legendChanged

layerAdded

layerMoved

layerRemoved

layerAdding

layerMoving

layerRemoving

visibilityChanged

selectionChanged

extentChanged

addAtomicEventListener

removeAtomicEventListener

visibilityChanged

activationChanged

nameChanged

backColorChanged

editionChanged

projectionChanged

drawValueChanged