com.bbn.openmap.event
Class ProjMapBeanKeyListener

java.lang.Object
  com.bbn.openmap.MapHandlerChild
      com.bbn.openmap.OMComponent
          com.bbn.openmap.event.MapBeanKeyListener
              com.bbn.openmap.event.ProjMapBeanKeyListener

All Implemented Interfaces:

LightMapHandlerChild, ProjectionStackTrigger, PropertyConsumer, java.awt.event.KeyListener, java.beans.beancontext.BeanContextChild, java.beans.beancontext.BeanContextMembershipListener, java.util.EventListener

public class ProjMapBeanKeyListener
extends MapBeanKeyListener
implements ProjectionStackTrigger

The ProjMapBeanKeyListener is a KeyListener that gets events when the MapBean has focus, and responds to certain keys by changing the projection. The arrow keys pan the map, and 'z' zooms in. Shift-z zooms out. The less than/comma key tells a projection stack to go back to the last projection, and the greater than/period tells it to go to the next projection. The MapBean has to have focus for these to work which is usually gained by clicking on the map.

Field Summary

protected PanSupport	panners
protected ListenerSupport<java.awt.event.ActionListener>	projListeners
protected ZoomSupport	zoomers
protected float	zoomFactor Default Zoom In Factor is 2, meaning that the scale number will be cut in half to zoom in and doubled to zoom out.

Fields inherited from class com.bbn.openmap.event.MapBeanKeyListener

mapBean

Fields inherited from class com.bbn.openmap.OMComponent

i18n, propertyPrefix

Fields inherited from class com.bbn.openmap.MapHandlerChild

beanContextChildSupport, isolated

Fields inherited from interface com.bbn.openmap.PropertyConsumer

EditorProperty, initPropertiesProperty, LabelEditorProperty, ScopedEditorProperty

Constructor Summary

ProjMapBeanKeyListener()

Method Summary

void	addActionListener(java.awt.event.ActionListener al) Add an ActionListener for events that trigger events to shift the Projection stack.
void	findAndInit(java.lang.Object someObj) In addition to the MapBean, find a projection stack so the less than/greater than works on that.
void	findAndUndo(java.lang.Object someObj) The childrenRemoved has been changed to go through its iterator to call this method with every object.
protected void	fireProjectionStackEvent(java.lang.String command) Called by keyReleased when the period/comma keys are pressed.
void	keyReleased(java.awt.event.KeyEvent e)
void	removeActionListener(java.awt.event.ActionListener al) Remove an ActionListener that receives events that trigger events to shift the Projection stack.
void	setMapBean(MapBean map) In addition to the super.setMapBean() method, also sets the MapBean as a zoom and pan listener.
void	updateProjectionStackStatus(boolean containsBackProjections, boolean containsForwardProjections) To receive a status to let the trigger know if any projections in the forward or backward stacks exist, possibly to disable any gui widgets.

Methods inherited from class com.bbn.openmap.event.MapBeanKeyListener

getMapBean, keyPressed, keyTyped

Methods inherited from class com.bbn.openmap.OMComponent

getProperties, getPropertyInfo, getPropertyPrefix, setProperties, setProperties, setPropertyPrefix

Methods inherited from class com.bbn.openmap.MapHandlerChild

addPropertyChangeListener, addVetoableChangeListener, childrenAdded, childrenRemoved, findAndInit, firePropertyChange, fireVetoableChange, getBeanContext, isIsolated, removePropertyChangeListener, removeVetoableChangeListener, setBeanContext, setIsolated

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Detail

zoomFactor

protected transient float zoomFactor

Default Zoom In Factor is 2, meaning that the scale number will be cut in half to zoom in and doubled to zoom out.

panners

protected PanSupport panners

zoomers

protected ZoomSupport zoomers

projListeners

protected ListenerSupport<java.awt.event.ActionListener> projListeners

Constructor Detail

ProjMapBeanKeyListener

public ProjMapBeanKeyListener()

Method Detail

keyReleased

public void keyReleased(java.awt.event.KeyEvent e)

Specified by:

keyReleased in interface java.awt.event.KeyListener

Overrides:

keyReleased in class MapBeanKeyListener

setMapBean

public void setMapBean(MapBean map)

In addition to the super.setMapBean() method, also sets the MapBean as a zoom and pan listener.

Overrides:

setMapBean in class MapBeanKeyListener

fireProjectionStackEvent

protected void fireProjectionStackEvent(java.lang.String command)

Called by keyReleased when the period/comma keys are pressed.

addActionListener

public void addActionListener(java.awt.event.ActionListener al)

Add an ActionListener for events that trigger events to shift the Projection stack.

Specified by:

addActionListener in interface ProjectionStackTrigger

removeActionListener

public void removeActionListener(java.awt.event.ActionListener al)

Remove an ActionListener that receives events that trigger events to shift the Projection stack.

Specified by:

removeActionListener in interface ProjectionStackTrigger

updateProjectionStackStatus

public void updateProjectionStackStatus(boolean containsBackProjections,
                                        boolean containsForwardProjections)

To receive a status to let the trigger know if any projections in the forward or backward stacks exist, possibly to disable any gui widgets. Does nothing, we don't care here.

Specified by:

updateProjectionStackStatus in interface ProjectionStackTrigger

Parameters:

containsBackProjections - there is at least one past projection in the back cache.

containsForwardProjections - there is at least one future projection in the forward cache. Used when a past projection is being used.

findAndInit

public void findAndInit(java.lang.Object someObj)

In addition to the MapBean, find a projection stack so the less than/greater than works on that.

Specified by:

findAndInit in interface LightMapHandlerChild

Overrides:

findAndInit in class MapBeanKeyListener

findAndUndo

public void findAndUndo(java.lang.Object someObj)

Description copied from class: MapHandlerChild

The childrenRemoved has been changed to go through its iterator to call this method with every object. This lets subclasses call this method on their super class, so it can handle what it needs to with objects it may be interested in.

Specified by:

findAndUndo in interface LightMapHandlerChild

Overrides:

findAndUndo in class MapBeanKeyListener