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

Class AlternateInput<T>

java.lang.Object

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

uk.ac.ed.epcc.webapp.forms.inputs.MultiInput<V,I>

uk.ac.ed.epcc.webapp.forms.inputs.ParseMultiInput<T,Input<T>>

uk.ac.ed.epcc.webapp.forms.inputs.AlternateInput<T>

Type Parameters:

T - type of input

I - class of sub-inputs

All Implemented Interfaces:

Input<T>, ParseMapInput

Direct Known Subclasses:

AlternateItemInput

public class AlternateInput<T>
extends ParseMultiInput<T,Input<T>>

An alternateInput is a MultiInput consisting of several different inputs of the same type. Each sub-input is optional and the first input with a value is taken This is for implementing a pull-down of common options with a text-box for general input.

Field Summary

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

validators

Constructor Summary

Constructors

Constructor and Description
AlternateInput()

Method Summary

Modifier and Type	Method and Description
void	addInput(java.lang.String sub_key, java.lang.String label, Input<T> i)
T	convert(java.lang.Object v) Perform any supported type conversions to to generate a value of the target type
java.util.Map<java.lang.String,java.lang.Object>	getMap() get a map of String representation of the values in the input that is compatible with the way the input parses the map
T	getValue() get the current value of the Object created by this selector.
boolean	parse(java.util.Map<java.lang.String,java.lang.Object> v) Set the value of the input by parsing a textual representation of the sub inputs.
boolean	requireAll() Are all inputs required
T	setValue(T v) set the value of this selector.

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

accept

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

addInput, containsInput, getInput, getInputs, getPrettyString, getString, getSubKeys, getSubLabel, hasLineBreaks, hasSubLabels, isEmpty, removeInput, setKey, setLineBreaks, validateInner

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

addValidator, getKey, getString, removeValidator, validate

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, getKey, removeValidator, validate

Constructor Detail

AlternateInput

public AlternateInput()

Method Detail

getValue

public T getValue()

Description copied from interface: Input

get the current value of the Object created by this selector.

Specified by:

getValue in interface Input<T>

Specified by:

getValue in class MultiInput<T,Input<T>>

Returns:

Object value of this selector

setValue

public T setValue(T v)
           throws TypeError

Description copied from interface: Input

set the value of this selector. This is either called by the Form to specify a default value or by the edit methods in the sub-class implementation.

Specified by:

setValue in interface Input<T>

Specified by:

setValue in class MultiInput<T,Input<T>>

Returns:

previous value Object

Throws:

TypeError

convert

public T convert(java.lang.Object v)
          throws TypeError

Description copied from interface: Input

Perform any supported type conversions to to generate a value of the target type

Specified by:

convert in interface Input<T>

Overrides:

convert in class BaseInput<T>

Parameters:

v - Object input

Returns:

target type

Throws:

TypeError

addInput

public void addInput(java.lang.String sub_key,
                     java.lang.String label,
                     Input<T> i)

Overrides:

addInput in class MultiInput<T,Input<T>>

requireAll

public boolean requireAll()

Description copied from class: MultiInput

Are all inputs required

Overrides:

requireAll in class MultiInput<T,Input<T>>

Returns:

getMap

public java.util.Map<java.lang.String,java.lang.Object> getMap()

Description copied from interface: ParseMapInput

get a map of String representation of the values in the input that is compatible with the way the input parses the map

Returns:

Map or null if no value

parse

public boolean parse(java.util.Map<java.lang.String,java.lang.Object> v)
              throws ParseException

Description copied from interface: ParseMapInput

Set the value of the input by parsing a textual representation of the sub inputs.

Returns:

true if non leaf value used.

Throws:

ParseException