org.jdesktop.swingx.rollover

Class RolloverController<T extends JComponent>

java.lang.Object

org.jdesktop.swingx.rollover.RolloverController<T>

All Implemented Interfaces:

PropertyChangeListener, EventListener

Direct Known Subclasses:

ListRolloverController, TableRolloverController, TreeRolloverController

public abstract class RolloverController<T extends JComponent>
extends Object
implements PropertyChangeListener

Controller for "live" behaviour of XXRenderers. Once installed on a component, it updates renderer's rollover state based on the component's rollover properties. Rollover client properties are Points with cell coordinates in the view coordinate system as appropriate for the concrete component (Point.x == column, Point.y == row). Repaints effected component regions. Updates link cursor. Installs a click-action bound to space-released in the target's actionMap/inputMap.

Author:

Jeanette Winzenburg, Berlin

Field Summary

Fields

Modifier and Type	Field and Description
protected T	component
static String	EXECUTE_BUTTON_ACTIONCOMMAND the key of the rollover click action which is installed in the component's actionMap.

Constructor Summary

Constructors

Constructor and Description
RolloverController()

Method Summary

Modifier and Type	Method and Description
protected void	click(Point location) called on change of client property Clicked_key.
protected Action	createExecuteButtonAction() creates and returns the click action to install in the component's actionMap.
protected abstract Point	getFocusedCell() The coordinates of the focused cell in view coordinates.
protected abstract RolloverRenderer	getRolloverRenderer(Point location, boolean prepare) Returns the rolloverRenderer at the given location.
protected boolean	hasRollover(Point location) Returns a boolean indicating whether the or not the cell at the given has a rollover renderer.
void	install(T table) Install this as controller for the given component.
protected boolean	isClickable(Point location) Returns a boolean indicating whether or not the cell at the given location is clickable.
void	propertyChange(PropertyChangeEvent evt)
protected void	registerExecuteButtonAction() installs and registers the click action in the component's actionMap/inputMap.
void	release() Uninstall this as controller from the component, if any.
protected abstract void	rollover(Point oldLocation, Point newLocation) called on change of client property Rollover_Key.
protected void	unregisterExecuteButtonAction() uninstalls and deregisters the click action from the component's actionMap/inputMap.

Methods inherited from class java.lang.Object

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

Field Detail

EXECUTE_BUTTON_ACTIONCOMMAND

public static final String EXECUTE_BUTTON_ACTIONCOMMAND

the key of the rollover click action which is installed in the component's actionMap.

See Also:

Constant Field Values

component

protected T extends JComponent component

Constructor Detail

RolloverController

public RolloverController()

Method Detail

propertyChange

public void propertyChange(PropertyChangeEvent evt)

Specified by:

propertyChange in interface PropertyChangeListener

install

public void install(T table)

Install this as controller for the given component.

Parameters:

table - the component which has renderers to control.

release

public void release()

Uninstall this as controller from the component, if any.

rollover

protected abstract void rollover(Point oldLocation,
                                 Point newLocation)

called on change of client property Rollover_Key.

Parameters:

oldLocation - the old value of the rollover location.

newLocation - the new value of the rollover location.

click

protected void click(Point location)

called on change of client property Clicked_key.

Parameters:

location - the new value of the clicked location.

getRolloverRenderer

protected abstract RolloverRenderer getRolloverRenderer(Point location,
                                                        boolean prepare)

Returns the rolloverRenderer at the given location.

The result may be null if there is none or if rollover is not enabled. If the prepare flag is true, the renderer will be prepared with value and state as appropriate for the given location. Note: PRE - the location must be valid in cell coordinate space.

Parameters:

location - a valid location in cell coordinates, p.x == column, p.y == row.

prepare -

Returns:

RolloverRenderer at the given location

isClickable

protected boolean isClickable(Point location)

Returns a boolean indicating whether or not the cell at the given location is clickable.

This implementation returns true if the target is enabled and the cell has a rollover renderer.

Parameters:

location - in cell coordinates, p.x == column, p.y == row.

Returns:

true if the cell at the given location is clickable

See Also:

hasRollover(Point)

hasRollover

protected boolean hasRollover(Point location)

Returns a boolean indicating whether the or not the cell at the given has a rollover renderer. Always returns false if the location is not valid.

Parameters:

location - in cell coordinates, p.x == column, p.y == row.

Returns:

true if the location is valid and has rollover effects, false otherwise.

getFocusedCell

protected abstract Point getFocusedCell()

The coordinates of the focused cell in view coordinates. This method is called if the click action is invoked by a keyStroke. The returned cell coordinates should be related to what is typically interpreted as "focused" in the context of the component. p.x == focused column, p.y == focused row. A null return value or any coordinate value of < 0 is interpreted as "outside".

Returns:

the location of the focused cell.

unregisterExecuteButtonAction

protected void unregisterExecuteButtonAction()

uninstalls and deregisters the click action from the component's actionMap/inputMap.

registerExecuteButtonAction

protected void registerExecuteButtonAction()

installs and registers the click action in the component's actionMap/inputMap.

createExecuteButtonAction

protected Action createExecuteButtonAction()

creates and returns the click action to install in the component's actionMap.