Package VASSAL.build.module.map

Class Scroller

java.lang.Object

VASSAL.build.AbstractBuildable

VASSAL.build.module.map.Scroller

All Implemented Interfaces:

KeyListener, EventListener, Buildable, PropertyNameSource, ValidityChecker

public class Scroller
extends AbstractBuildable
implements KeyListener

This component listens to key events on a Map window and scrolls the map. Depending on the USE_ARROWS attribute, will use number keypad or arrow keys, or will offer a preferences setting for the user to choose

Field Summary

Fields

Modifier and Type	Field	Description
static String	ALWAYS
static String	NEVER
static String	PROMPT
static String	USE_ARROWS	The attribute name for whether to use arrow keys instead of number keypad.
protected String	usingArrows
protected int	xStep
protected int	yStep

Fields inherited from class VASSAL.build.AbstractBuildable

buildComponents, validator

Constructor Summary

Constructors

Constructor	Description
Scroller()

Method Summary

Modifier and Type	Method	Description
void	add(Buildable b)	Add a Buildable object to this object
void	addTo(Buildable parent)	Adds this component to its parent.
String[]	getAttributeNames()	Lists all the buildFile (XML) attribute names for this component.
String	getAttributeValueString(String name)
void	keyPressed(KeyEvent e)
void	keyReleased(KeyEvent e)
void	keyTyped(KeyEvent e)
void	setAttribute(String name, Object value)	Sets a buildFile (XML) attribute value for this component.

Methods inherited from class VASSAL.build.AbstractBuildable

build, getAllDescendantComponents, getAllDescendantComponentsOf, getBuildables, getBuildComponents, getBuildElement, getComponents, getComponentsOf, getPropertyNames, validate

Methods inherited from class java.lang.Object

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

Field Details

USE_ARROWS

public static final String USE_ARROWS

The attribute name for whether to use arrow keys instead of number keypad. Should be one of ALWAYS, NEVER, or PROMPT

See Also:

Constant Field Values

ALWAYS

public static final String ALWAYS

See Also:

Constant Field Values

NEVER

public static final String NEVER

See Also:

Constant Field Values

PROMPT

public static final String PROMPT

See Also:

Constant Field Values

usingArrows

protected String usingArrows

xStep

protected int xStep

yStep

protected int yStep

Constructor Details

Scroller

public Scroller()

Method Details

addTo

public void addTo(Buildable parent)

Description copied from interface: Buildable

Adds this component to its parent. In order to make Buildable objects extensible, the child is reponsible for adding itself to the parent. That way, Buildable subcomponents can be defined in an extension package without needing to modify the containing class.

Specified by:

addTo in interface Buildable

add

public void add(Buildable b)

Description copied from class: AbstractBuildable

Add a Buildable object to this object

Specified by:

add in interface Buildable

Overrides:

add in class AbstractBuildable

getAttributeNames

public String[] getAttributeNames()

Description copied from class: AbstractBuildable

Lists all the buildFile (XML) attribute names for this component. If this component is ALSO an AbstractConfigurable, then this list of attributes determines the appropriate attribute order for AbstractConfigurable.getAttributeDescriptions() and AbstractConfigurable.getAttributeTypes().

Specified by:

getAttributeNames in class AbstractBuildable

Returns:

a list of all buildFile (XML) attribute names for this component

setAttribute

public void setAttribute(String name,
Object value)

Description copied from class: AbstractBuildable

Sets a buildFile (XML) attribute value for this component. The key parameter will be one of those listed in AbstractBuildable.getAttributeNames(). If the value parameter is a String, it will be the value returned by AbstractBuildable.getAttributeValueString(java.lang.String) for the same key. If the implementing class extends AbstractConfigurable, then value will be an instance of the corresponding Class listed in AbstractConfigurable.getAttributeTypes()

Specified by:

setAttribute in class AbstractBuildable

Parameters:

name - the name of the attribute. Will be one of those listed in AbstractBuildable.getAttributeNames()

value - If the value parameter is a String, it will be the value returned by AbstractBuildable.getAttributeValueString(java.lang.String) for the same key. If the implementing class extends AbstractConfigurable, then value can also be an instance of the corresponding Class listed in AbstractConfigurable.getAttributeTypes()

getAttributeValueString

public String getAttributeValueString(String name)

Specified by:

getAttributeValueString in class AbstractBuildable

Parameters:

name - the name of the attribute. Will be one of those listed in AbstractBuildable.getAttributeNames()

Returns:

a String representation of the attribute with the given name. When initializing a module, this String value will be passed to AbstractBuildable.setAttribute(java.lang.String, java.lang.Object).

keyPressed

public void keyPressed(KeyEvent e)

Specified by:

keyPressed in interface KeyListener

keyReleased

public void keyReleased(KeyEvent e)

Specified by:

keyReleased in interface KeyListener

keyTyped

public void keyTyped(KeyEvent e)

Specified by:

keyTyped in interface KeyListener