Package org.apache.wicket.markup.html.form

Class NumberTextField<N extends Number & Comparable<N>>

java.lang.Object

org.apache.wicket.Component

org.apache.wicket.MarkupContainer

org.apache.wicket.markup.html.WebMarkupContainer

org.apache.wicket.markup.html.form.LabeledWebMarkupContainer

org.apache.wicket.markup.html.form.FormComponent<T>

org.apache.wicket.markup.html.form.AbstractTextComponent<T>

org.apache.wicket.markup.html.form.TextField<N>

org.apache.wicket.markup.html.form.NumberTextField<N>

Type Parameters:

N - the type of the number

All Implemented Interfaces:

Serializable, Iterable<Component>, IEventSink, IEventSource, IFeedbackContributor, IConverterLocator, IGenericComponent<N,FormComponent<N>>, IMetadataContext<Serializable,Component>, IFormModelUpdateListener, IFormVisitorParticipant, ILabelProvider<String>, IHeaderContributor, IRequestableComponent, IHierarchical<Component>, IClusterable

Direct Known Subclasses:

RangeTextField

public class NumberTextField<N extends Number & Comparable<N>>
extends TextField<N>

A TextField for HTML5 <input> with type number.

The <input>'s value will be rendered in floating-point representation, as required by the HTML specification. Use a simple TextField to use a locale specific conversion of numbers.

Automatically validates the input against the configured min and max attributes. If any of them is null then respective MIN_VALUE or MAX_VALUE for the number type is used. If the number type has no minimum and/or maximum value then Double.MIN_VALUE and Double.MAX_VALUE are used respectfully.

See Also:

• Serialized Form

Nested Class Summary

Nested classes/interfaces inherited from class org.apache.wicket.markup.html.form.AbstractTextComponent

AbstractTextComponent.ITextFormatProvider

Field Summary

Fields

Modifier and Type	Field	Description
static final Double	ANY	Use this as a marker of step attribute value "any" Because the w3c spec requires step to be a non-negative digit greater than zero we use zero as delegate for "any" keyword.

Fields inherited from class org.apache.wicket.markup.html.form.FormComponent

FLAG_CONVERT_EMPTY_INPUT_STRING_TO_NULL, VALUE_SEPARATOR

Fields inherited from class org.apache.wicket.Component

ENABLE, FLAG_INITIALIZED, FLAG_RESERVED1, FLAG_RESERVED2, FLAG_RESERVED3, FLAG_RESERVED4, FLAG_RESERVED5, FLAG_RESERVED8, PARENT_PATH, PATH_SEPARATOR, RENDER, RFLAG_CONTAINER_DEQUEING, RFLAG_CONTAINER_HAS_REMOVALS

Constructor Summary

Constructors

Constructor	Description
NumberTextField(String id)	Construct.
NumberTextField(String id, Class<N> type)	Construct.
NumberTextField(String id, IModel<N> model)	Construct.
NumberTextField(String id, IModel<N> model, Class<N> type)	Construct.

Method Summary

Modifier and Type	Method	Description
void	convertInput()	Always use Locale.ENGLISH to parse the input.
protected String[]	getInputTypes()	Subclass should override this method if this textfield is mapped on a different input type as text.
protected String	getModelValue()	The formatting for Locale.ENGLISH might not be compatible with HTML (e.g.
protected void	onComponentTag(ComponentTag tag)	Processes the component tag.
protected void	onConfigure()	Called on all components before any component is rendered.
NumberTextField<N>	setMaximum(N maximum)	Sets the maximum allowed value
NumberTextField<N>	setMaximum(IModel<N> maximum)	Sets the maximum allowed value
NumberTextField<N>	setMinimum(N minimum)	Sets the minimum allowed value
NumberTextField<N>	setMinimum(IModel<N> minimum)	Sets the minimum allowed value
NumberTextField<N>	setStep(N step)	Sets the step attribute
NumberTextField<N>	setStep(IModel<N> step)	Sets the step attribute

Methods inherited from class org.apache.wicket.markup.html.form.AbstractTextComponent

getConvertEmptyInputStringToNull, isInputNullable, onBeforeRender, setConvertEmptyInputStringToNull

Methods inherited from class org.apache.wicket.markup.html.form.FormComponent

add, add, checkRequired, clearInput, convertValue, error, getConvertedInput, getDefaultLabel, getDefaultLabel, getForm, getInput, getInputAsArray, getInputName, getParameterValues, getRawInput, getType, getValidatorKeyPrefix, getValidators, getValue, hasRawInput, inputAsInt, inputAsInt, inputAsIntArray, inputChanged, internalOnModelChanged, invalid, isMultiPart, isRequired, isValid, newValidatable, newValidationError, onDetach, onDisabled, onInvalid, onValid, processChildren, processInput, remove, reportRequiredError, setConvertedInput, setLabel, setModelValue, setRequired, setType, shouldTrimInput, trim, updateAutoLabels, updateAutoLabels, updateCollectionModel, updateModel, valid, validate, validateRequired, validateValidators, visitComponentsPostOrder, visitFormComponentsPostOrder

Methods inherited from class org.apache.wicket.markup.html.form.LabeledWebMarkupContainer

getLabel

Methods inherited from class org.apache.wicket.markup.html.WebMarkupContainer

getWebApplication, getWebPage, getWebRequest, getWebResponse, getWebSession

Methods inherited from class org.apache.wicket.MarkupContainer

add, addDequeuedComponent, addOrReplace, autoAdd, canDequeueTag, contains, dequeue, dequeue, dequeuePreamble, findChildComponent, findComponentToDequeue, get, getAssociatedMarkup, getAssociatedMarkupStream, getMarkup, getMarkupType, getRegionMarkup, internalAdd, internalInitialize, iterator, iterator, newDequeueContext, onComponentTagBody, onInitialize, onRender, queue, remove, remove, removeAll, renderAll, renderAssociatedMarkup, renderNext, replace, setDefaultModel, size, stream, streamChildren, toString, toString, visitChildren, visitChildren

Methods inherited from class org.apache.wicket.Component

add, addStateChange, beforeRender, canCallListener, canCallListenerAfterExpiry, checkComponentTag, checkComponentTagAttribute, checkHierarchyChange, clearOriginalDestination, configure, continueToOriginalDestination, createConverter, debug, detach, detachModel, detachModels, determineVisibility, error, exceptionMessage, fatal, findMarkupStream, findPage, findParent, findParentWithAssociatedMarkup, getAjaxRegionMarkupId, getApplication, getBehaviorById, getBehaviorId, getBehaviors, getBehaviors, getClassRelativePath, getConverter, getDefaultModel, getDefaultModelObject, getDefaultModelObjectAsString, getDefaultModelObjectAsString, getEscapeModelStrings, getFeedbackMessages, getFlag, getId, getInnermostModel, getInnermostModel, getLocale, getLocalizer, getMarkup, getMarkupAttributes, getMarkupId, getMarkupId, getMarkupIdFromMarkup, getMarkupIdImpl, getMarkupSourcingStrategy, getMarkupTag, getMetaData, getModelComparator, getOutputMarkupId, getOutputMarkupPlaceholderTag, getPage, getPageRelativePath, getParent, getPath, getRenderBodyOnly, getRequest, getRequestCycle, getRequestFlag, getResponse, getSession, getSizeInBytes, getStatelessHint, getString, getString, getString, getStyle, getVariation, hasBeenRendered, hasErrorMessage, hasFeedbackMessage, info, initModel, internalRenderComponent, internalRenderHead, isActionAuthorized, isAuto, isBehaviorAccepted, isEnableAllowed, isEnabled, isEnabledInHierarchy, isIgnoreAttributeModifier, isInitialized, isRenderAllowed, isRendering, isStateless, isVersioned, isVisibilityAllowed, isVisible, isVisibleInHierarchy, markRendering, modelChanged, modelChanging, newMarkupSourcingStrategy, onAfterRender, onEvent, onModelChanged, onModelChanging, onReAdd, onRemove, redirectToInterceptPage, remove, remove, render, renderComponentTag, rendered, renderHead, renderPart, renderPlaceholderTag, replaceComponentTagBody, replaceWith, sameInnermostModel, sameInnermostModel, send, setAuto, setDefaultModelObject, setEnabled, setEscapeModelStrings, setFlag, setIgnoreAttributeModifier, setMarkup, setMarkupId, setMarkupIdImpl, setMetaData, setOutputMarkupId, setOutputMarkupPlaceholderTag, setParent, setRenderBodyOnly, setResponsePage, setResponsePage, setResponsePage, setVersioned, setVisibilityAllowed, setVisible, success, urlFor, urlFor, urlFor, urlForListener, urlForListener, visitParents, visitParents, warn, wrap

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.apache.wicket.IGenericComponent

getDefaultModel, getDefaultModelObject, getModel, getModelObject, setDefaultModel, setDefaultModelObject, setModel, setModelObject

Methods inherited from interface java.lang.Iterable

forEach, spliterator

Field Details

ANY

public static final Double ANY

Use this as a marker of step attribute value "any" Because the w3c spec requires step to be a non-negative digit greater than zero we use zero as delegate for "any" keyword.

Constructor Details

NumberTextField

public NumberTextField(String id)

Construct.

Parameters:

id - The component id

NumberTextField

public NumberTextField(String id,
 Class<N> type)

Construct.

Parameters:

id - The component id

type - The type to use when updating the model for this text field

NumberTextField

public NumberTextField(String id,
 IModel<N> model)

Construct.

Parameters:

id - The component id

model - The input value

NumberTextField

public NumberTextField(String id,
 IModel<N> model,
 Class<N> type)

Construct.

Parameters:

id - The component id

model - The input value

type - The type to use when updating the model for this text field

Method Details

setMinimum

public NumberTextField<N> setMinimum(N minimum)

Sets the minimum allowed value

Parameters:

minimum - the minimum allowed value

Returns:

this instance

setMaximum

public NumberTextField<N> setMaximum(N maximum)

Sets the maximum allowed value

Parameters:

maximum - the maximum allowed value

Returns:

this instance

setStep

public NumberTextField<N> setStep(N step)

Sets the step attribute

Parameters:

step - the step attribute

Returns:

this instance

setMinimum

public NumberTextField<N> setMinimum(IModel<N> minimum)

Sets the minimum allowed value

Parameters:

minimum - the minimum allowed value

Returns:

this instance

setMaximum

public NumberTextField<N> setMaximum(IModel<N> maximum)

Sets the maximum allowed value

Parameters:

maximum - the maximum allowed value

Returns:

this instance

setStep

public NumberTextField<N> setStep(IModel<N> step)

Sets the step attribute

Parameters:

step - the step attribute

Returns:

this instance

onConfigure

protected void onConfigure()

Description copied from class: Component

Called on all components before any component is rendered. This method should be used to configure such things as visibility and enabled flags.

Overrides must call super.onConfigure(), usually before any other code

NOTE: Component hierarchy should not be modified inside this method, instead it should be done in Component.onBeforeRender()

NOTE: Why this method is preferrable to directly overriding Component.isVisible() and Component.isEnabled()? Because those methods are called multiple times even for processing of a single request. If they contain expensive logic they can slow down the response time of the entire page. Further, overriding those methods directly on form components may lead to inconsistent or unexpected state depending on when those methods are called in the form processing workflow. It is a better practice to push changes to state rather than pull.

NOTE: If component's visibility or another property depends on another component you may call other.configure() followed by other.isVisible() as mentioned in Component.configure() javadoc.

NOTE: Why should Component.onBeforeRender() not be used for this? Because if a component's visibility is controlled inside Component.onBeforeRender(), once invisible the component will never become visible again.

Overrides:

onConfigure in class Component

onComponentTag

protected void onComponentTag(ComponentTag tag)

Description copied from class: TextField

Processes the component tag.

Overrides:

onComponentTag in class TextField<N extends Number & Comparable<N>>

Parameters:

tag - Tag to modify

See Also:

• Component.onComponentTag(ComponentTag)

getInputTypes

protected String[] getInputTypes()

Description copied from class: TextField

Subclass should override this method if this textfield is mapped on a different input type as text. Like PasswordTextField or HiddenField.

Overrides:

getInputTypes in class TextField<N extends Number & Comparable<N>>

Returns:

The input type of this textfield, default is null

getModelValue

protected String getModelValue()

The formatting for Locale.ENGLISH might not be compatible with HTML (e.g. group digits), thus use Objects.stringValue(Object) instead.

Overrides:

getModelValue in class FormComponent<N extends Number & Comparable<N>>

Returns:

value

convertInput

public void convertInput()

Always use Locale.ENGLISH to parse the input.

Overrides:

convertInput in class AbstractTextComponent<N extends Number & Comparable<N>>

See Also:

• FormComponent.convertInput()