uk.ac.ed.epcc.webapp.forms.inputs

Class ConstantInput<V>

java.lang.Object

uk.ac.ed.epcc.webapp.forms.inputs.BaseInput<V>

uk.ac.ed.epcc.webapp.forms.inputs.AbstractInput<V>

uk.ac.ed.epcc.webapp.forms.inputs.ConstantInput<V>

Type Parameters:

V - type of value

All Implemented Interfaces:

Input<V>, UnmodifiableInput

public class ConstantInput<V>
extends AbstractInput<V>
implements UnmodifiableInput, Input<V>

a read-only input that cannot be modified. For convenience in update forms it can cache an object value but this should never actually be edited by the input instead the text label should be displayed. This input only validates against optional input

Field Summary

Fields inherited from class uk.ac.ed.epcc.webapp.forms.inputs.BaseInput

validators

Constructor Summary

Constructors

Constructor and Description
ConstantInput(java.lang.String label)
ConstantInput(java.lang.String label, V value)

Method Summary

Modifier and Type	Method and Description
<R> R	accept(InputVisitor<R> vis)
java.lang.String	getLabel() generate the text to be presented to the user
java.lang.String	getPrettyString(V val) Convert a value into a user friendly string.
java.lang.String	getString(V val) get a String representation of an Object that is compatible with the way the input is parsed
void	setLabel(java.lang.String s)

Methods inherited from class uk.ac.ed.epcc.webapp.forms.inputs.AbstractInput

getValue, setKey, setValue

Methods inherited from class uk.ac.ed.epcc.webapp.forms.inputs.BaseInput

addValidator, convert, getKey, getString, removeValidator, validate, validateInner

Methods inherited from class java.lang.Object

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

Methods inherited from interface uk.ac.ed.epcc.webapp.forms.inputs.Input

addValidator, convert, getKey, getValue, isEmpty, removeValidator, setKey, setValue, validate

Constructor Detail

ConstantInput

public ConstantInput(java.lang.String label)

ConstantInput

public ConstantInput(java.lang.String label,
                     V value)

Method Detail

getLabel

public java.lang.String getLabel()

Description copied from interface: UnmodifiableInput

generate the text to be presented to the user

Specified by:

getLabel in interface UnmodifiableInput

Returns:

String

getString

public java.lang.String getString(V val)

Description copied from class: BaseInput

get a String representation of an Object that is compatible with the way the input is parsed

Specified by:

getString in interface Input<V>

Overrides:

getString in class BaseInput<V>

Returns:

String or null if val is null

See Also:

ParseInput

getPrettyString

public java.lang.String getPrettyString(V val)

Description copied from interface: Input

Convert a value into a user friendly string. This usually defaults to the same as getString but can be overridden to produce nicer output

Specified by:

getPrettyString in interface Input<V>

Overrides:

getPrettyString in class BaseInput<V>

Returns:

String

See Also:

ListInput

setLabel

public void setLabel(java.lang.String s)

accept

public <R> R accept(InputVisitor<R> vis)
             throws java.lang.Exception

Specified by:

accept in interface Input<V>

Throws:

java.lang.Exception