Package VASSAL.counters

Class CalculatedProperty

java.lang.Object

VASSAL.search.AbstractImageFinder

VASSAL.counters.Decorator

VASSAL.counters.CalculatedProperty

All Implemented Interfaces:

PropertyNameSource, PropertySource, EditablePiece, GamePiece, PropertyExporter, StateMergeable, PersistentPropertyContainer, Auditable, ImageSearchTarget, SearchTarget, RecursionLimiter.Loopable

public class CalculatedProperty
extends Decorator
implements EditablePiece, RecursionLimiter.Loopable

Conditional Marker A marker with a variable value depending on conditions.

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
static class	CalculatedProperty.Ed	Trait Editor implementation

Field Summary

Fields

Modifier and Type	Field	Description
protected static int	counter
protected String	description
protected Expression	expression
static final String	ID
protected String	name

Fields inherited from class VASSAL.counters.Decorator

piece

Fields inherited from interface VASSAL.counters.PropertyExporter

LOCALIZED_NAME

Constructor Summary

Constructors

Constructor	Description
CalculatedProperty()
CalculatedProperty(String type, GamePiece inner)

Method Summary

Modifier and Type	Method	Description
Rectangle	boundingBox()
void	draw(Graphics g, int x, int y, Component obs, double zoom)	Draw this GamePiece
protected String	evaluate()	Evaluate the calculated property.
String	getBaseDescription()	Support for a basic-name-only description introduced later, so this default retrofits it from the full description if an explicit one is not defined.
String	getDescription()	A plain-English description of this type of trait/piece - includes data from fields where appropriate
String	getDescriptionField()	If Decorator contains a description *field*, returns the current contents of it.
PieceEditor	getEditor()
protected String	getExpression()
List<String>	getExpressionList()	SearchTarget
HelpFile	getHelpFile()
Object	getLocalizedProperty(Object key)	Returns a localized translation of the specified property value, if available.
String	getName()	The plain English name for this piece
Object	getProperty(Object key)	Return the value of this trait's property.
List<String>	getPropertyList()	SearchTarget
List<String>	getPropertyNames()	Return Property names exposed by this trait
Shape	getShape()
protected KeyCommand[]	myGetKeyCommands()
String	myGetState()	The "state information" is "game state" information that can change during the course of a game.
String	myGetType()	The "type information" of a piece or trait is information that does not change during the course of a game.
Command	myKeyEvent(KeyStroke stroke)	The response of this trait alone to the given KeyStroke or the virtual keystroke of a NamedKeyStroke.
void	mySetState(String newState)	Sets the state of this-trait-only (inverse of Decorator.myGetState()).
void	mySetType(String type)	Sets the information for this piece.
boolean	testEquals(Object o)	Test if this Decorator's Class, Type and State are equal to another trait.

Methods inherited from class VASSAL.counters.Decorator

addImageNamesRecursively, addMenuCommand, buildDescription, buildDescription, buildDescription, getCommandDesc, getCommandDescription, getComponentName, getComponentTypeName, getDecorator, getDecorators, getFormattedStringList, getI18nData, getI18nData, getI18nData, getId, getInner, getInnermost, getKeyCommands, getLocalizedName, getMap, getMenuTextList, getNamedKeyStrokeList, getOuter, getOutermost, getParent, getPersistentProperty, getPosition, getProperties, getState, getTranslation, getType, isMenuCommand, isSelected, keyEvent, mergeState, putOldProperties, repack, repack, reportDataError, reportDataError, reportDataError, setDynamicProperties, setDynamicProperties, setDynamicProperty, setId, setInner, setMap, setParent, setPersistentProperty, setPosition, setProperty, setSelected, setState, toString

Methods inherited from class VASSAL.search.AbstractImageFinder

addLocalImageNames, getAllImageNames, getLocalImageNames

Methods inherited from class java.lang.Object

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

Methods inherited from interface VASSAL.script.expression.Auditable

getComponentName, getComponentTypeName

Methods inherited from interface VASSAL.counters.EditablePiece

checkTrueMoved, finishMove, finishMove, prepareMove

Methods inherited from interface VASSAL.counters.GamePiece

getId, getLocalizedName, getMap, getParent, getPosition, getState, getType, keyEvent, setId, setMap, setParent, setPosition, setProperty, setState

Methods inherited from interface VASSAL.search.ImageSearchTarget

addLocalImageNames, getAllImageNames, getLocalImageNames

Methods inherited from interface VASSAL.counters.PropertyExporter

getProperties

Field Details

ID

public static final String ID

See Also:

• Constant Field Values

counter

protected static int counter

name

protected String name

expression

protected Expression expression

description

protected String description

Constructor Details

CalculatedProperty

public CalculatedProperty()

CalculatedProperty

public CalculatedProperty(String type,
 GamePiece inner)

Method Details

boundingBox

public Rectangle boundingBox()

Specified by:

boundingBox in interface GamePiece

Returns:

The area which this GamePiece occupies when drawn at the point (0,0)

draw

public void draw(Graphics g,
 int x,
 int y,
 Component obs,
 double zoom)

Description copied from interface: GamePiece

Draw this GamePiece

Specified by:

draw in interface GamePiece

Parameters:

g - target Graphics object

x - x-location of the center of the piece

y - y-location of the center of the piece

obs - the Component on which this piece is being drawn

zoom - the scaling factor.

getName

public String getName()

Description copied from interface: GamePiece

The plain English name for this piece

Specified by:

getName in interface GamePiece

myGetKeyCommands

protected KeyCommand[] myGetKeyCommands()

Specified by:

myGetKeyCommands in class Decorator

Returns:

the key commands for this trait alone

See Also:

• which returns the key commands for this trait AND all inner piece members

myGetState

public String myGetState()

Description copied from class: Decorator

The "state information" is "game state" information that can change during the course of a game. State information is saved when the game is saved and is transferred between players on the server. For example, the relative order of pieces in a stack is state information, but whether the stack is expanded is not.

Specified by:

myGetState in class Decorator

Returns:

the game state information of this trait alone

See Also:

• which returns state information for all inward piece members as well

myGetType

public String myGetType()

Description copied from class: Decorator

The "type information" of a piece or trait is information that does not change during the course of a game. Image file names, context menu strings, etc., all should be reflected in the type. The type information is returned serialized string form, ready to be decoded by a SequenceEncoder#decode.

Specified by:

myGetType in class Decorator

Returns:

the type information of this trait alone

See Also:

• BasicCommandEncoder
• which returns type information for all inward piece members as well

myKeyEvent

public Command myKeyEvent(KeyStroke stroke)

Description copied from class: Decorator

The response of this trait alone to the given KeyStroke or the virtual keystroke of a NamedKeyStroke. NamedKeyStrokes are allocated a unique internal KeyStroke when they are first used in a module, and that KeyStroke is passed up and down the decorator stack to represent them (see NamedKeyStroke.getKeyStroke()).

Specified by:

myKeyEvent in class Decorator

Parameters:

stroke - KeyStroke to apply (to apply a Named Keystroke send NamedKeyStroke.getKeyStroke()

Returns:

Generated Command to reproduce any changes just made to to the game state, or null if no effect

See Also:

• Decorator.keyEvent(javax.swing.KeyStroke)

mySetState

public void mySetState(String newState)

Description copied from class: Decorator

Sets the state of this-trait-only (inverse of Decorator.myGetState()). The "state information" is information that can change during the course of a game. State information is saved when the game is saved and is transferred between players on the server. For example, the relative order of pieces in a stack is state information, but whether the stack is expanded is not.

Specified by:

mySetState in class Decorator

Parameters:

newState - New state information serialized in string form, ready to be passed to a SequenceEncoder#decode.

getShape

public Shape getShape()

Specified by:

getShape in interface GamePiece

Returns:

The shape of the piece from the user's viewpoint. This defines the area in which the user must click to select or move the piece, for example. Like GamePiece.boundingBox(), it assumes the position is (0,0) -- which to be clear is normally aligned with the CENTER of the piece image -- and must be translated to the actual location where the piece is being drawn. For most ordinary pieces, the shape returned here will simply be equivalent to the bounding box, but see NonRectangular.

getDescription

public String getDescription()

Description copied from interface: EditablePiece

A plain-English description of this type of trait/piece - includes data from fields where appropriate

Specified by:

getDescription in interface EditablePiece

getBaseDescription

public String getBaseDescription()

Description copied from interface: EditablePiece

Support for a basic-name-only description introduced later, so this default retrofits it from the full description if an explicit one is not defined.

Specified by:

getBaseDescription in interface EditablePiece

Returns:

name of trait/piece type, w/o additional data

getDescriptionField

public String getDescriptionField()

Description copied from class: Decorator

If Decorator contains a description *field*, returns the current contents of it.

Overrides:

getDescriptionField in class Decorator

Returns:

contents of "description" field, if it exists.

getHelpFile

public HelpFile getHelpFile()

Specified by:

getHelpFile in interface EditablePiece

Returns:

the help file for this trait

mySetType

public void mySetType(String type)

Description copied from interface: EditablePiece

Sets the information for this piece. See Decorator.myGetType()

Specified by:

mySetType in interface EditablePiece

Parameters:

type - a serialized configuration string to set the "type information" of this piece, which is information that doesn't change during the course of a single game (e.g. Image Files, Context Menu strings, etc). Typically ready to be processed e.g. by SequenceEncoder.decode()

getExpression

protected String getExpression()

getExpressionList

public List<String> getExpressionList()

Description copied from class: Decorator

SearchTarget

Specified by:

getExpressionList in interface SearchTarget

Overrides:

getExpressionList in class Decorator

Returns:

a list of the Decorator's string/expression fields if any (for search)

getPropertyList

public List<String> getPropertyList()

Description copied from class: Decorator

SearchTarget

Specified by:

getPropertyList in interface SearchTarget

Overrides:

getPropertyList in class Decorator

Returns:

a list of any Property Names referenced in the Decorator, if any (for search)

getProperty

public Object getProperty(Object key)

Return the value of this trait's property. Evaluating Expressions can lead to infinite loops and eventually a Stack Overflow. Trap and report this

Specified by:

getProperty in interface GamePiece

Specified by:

getProperty in interface PropertySource

Overrides:

getProperty in class Decorator

Parameters:

key - String key of property to be returned

Returns:

Object containing new value of the specified property

getLocalizedProperty

public Object getLocalizedProperty(Object key)

Description copied from class: Decorator

Returns a localized translation of the specified property value, if available. Otherwise returns the non-localized version. See Decorator.getProperty(java.lang.Object).

Specified by:

getLocalizedProperty in interface PropertySource

Overrides:

getLocalizedProperty in class Decorator

Parameters:

key - String key of property to be returned

Returns:

Object containing localized text of the specified property, if available, otherwise non-localized value

evaluate

protected String evaluate()

Evaluate the calculated property. Do not call Decorator.reportDataError as this will probably cause an infinite reporting loop.

Returns:

value

testEquals

public boolean testEquals(Object o)

Description copied from class: Decorator

Test if this Decorator's Class, Type and State are equal to another trait. Implementations of this method should compare the individual values of the fields that make up the Decorators Type and State. Implementations should NOT compare the values returned by myGetType() or myGetState(). This method is intended to be used by Unit Tests to verify that a trait is unchanged after going through a process such as serialization/deserialization.

Overrides:

testEquals in class Decorator

Parameters:

o - Object to compare this Decorator to

Returns:

true if the Class, type and state all match

getEditor

public PieceEditor getEditor()

Specified by:

getEditor in interface EditablePiece

Overrides:

getEditor in class Decorator

Returns:

the configurer for this trait - the dialog which allows the editing the piece's type information. Default configurer is a SimplePieceEditor, but many traits will want to provide custom versions.

getPropertyNames

public List<String> getPropertyNames()

Return Property names exposed by this trait

Specified by:

getPropertyNames in interface PropertyNameSource

Overrides:

getPropertyNames in class Decorator

Returns:

List of property names "exposed" by this piece -- that are available to other Traits and components to read. Default behavior for a Trait is not to expose any properties, but Traits which should expose some (e.g. DynamicProperty or Marker) would provide an array of the property names here.