com.privatejgoodies.forms.layout

Class PrototypeSize

java.lang.Object

com.privatejgoodies.forms.layout.PrototypeSize

All Implemented Interfaces:

Size, Serializable

public final class PrototypeSize
extends Object
implements Size, Serializable

A Size implementation that computes its width and height by a prototype String.

Examples:

 new PrototypeSize("123-456-789");
 new FormLayout("p, 2dlu, 'MMMM'");
 

Since:

1.2

Version:

$Revision: 1.7 $

Author:

Karsten Lentzsch

See Also:

Size, Sizes, Serialized Form

Constructor Summary

Constructors

Constructor and Description
PrototypeSize(String prototype) Constructs a PrototypeSize for the given String.

Method Summary

Modifier and Type	Method and Description
boolean	compressible() Describes if this Size can be compressed, if container space gets scarce.
String	encode() Returns a parseable string representation of this prototype size.
boolean	equals(Object o) Indicates whether some other ConstantSize is "equal to" this one.
String	getPrototype() Returns this size's prototype string.
int	hashCode() Returns a hash code value for the object.
int	maximumSize(Container container, List components, FormLayout.Measure minMeasure, FormLayout.Measure prefMeasure, FormLayout.Measure defaultMeasure) Computes and returns the width of this Size's prototype in pixel.
String	toString() Returns a string representation of this size object.

Methods inherited from class java.lang.Object

clone, finalize, getClass, notify, notifyAll, wait, wait, wait

Constructor Detail

PrototypeSize

public PrototypeSize(String prototype)

Constructs a PrototypeSize for the given String.

Parameters:

prototype - the String used to compute the width and height.

Throws:

NullPointerException - if prototype is null.

Since:

1.2

Method Detail

getPrototype

public String getPrototype()

Returns this size's prototype string.

Returns:

the prototype string

maximumSize

public int maximumSize(Container container,
                       List components,
                       FormLayout.Measure minMeasure,
                       FormLayout.Measure prefMeasure,
                       FormLayout.Measure defaultMeasure)

Computes and returns the width of this Size's prototype in pixel. Ignores the component list and measures. Obtains the FontMetrics from the given layout container for the default dialog font provided by DefaultUnitConverter.getDefaultDialogFont() .

Invoked by FormSpec to determine the size of a column or row.

Specified by:

maximumSize in interface Size

Parameters:

container - the layout container

components - the list of components used to compute the size

minMeasure - the measure that determines the minimum sizes

prefMeasure - the measure that determines the preferred sizes

defaultMeasure - the measure that determines the default sizes

Returns:

the stringWidth for this size's prototype string computed by the container's FontMetrics for the DefaultUnitConverter's default dialog font

compressible

public boolean compressible()

Describes if this Size can be compressed, if container space gets scarce. Used by the FormLayout size computations in #compressedSizes to check whether a column or row can be compressed or not.

PrototypeSizes are incompressible.

Specified by:

compressible in interface Size

Returns:

false

encode

public String encode()

Returns a parseable string representation of this prototype size.

Specified by:

encode in interface Size

Returns:

a String that can be parsed by the Forms parser

equals

public boolean equals(Object o)

Indicates whether some other ConstantSize is "equal to" this one.

Overrides:

equals in class Object

Parameters:

o - the Object with which to compare

Returns:

true if this object is the same as the obj argument; false otherwise.

See Also:

Object.hashCode(), Hashtable

hashCode

public int hashCode()

Returns a hash code value for the object. This method is supported for the benefit of hashtables such as those provided by java.util.Hashtable.

Overrides:

hashCode in class Object

Returns:

a hash code value for this object.

See Also:

Object.equals(java.lang.Object), Hashtable

toString

public String toString()

Returns a string representation of this size object. Note: This string representation may change at any time. It is intended for debugging purposes. For parsing, use encode() instead.

Overrides:

toString in class Object

Returns:

a string representation of the constant size