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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<Boolean> org.apache.wicket.markup.html.form.CheckBox
public class CheckBox
HTML checkbox input component.
Java:
form.add(new CheckBox("bool"));HTML:
<input type="checkbox" wicket:id="bool" />
You can can extend this class and override method wantOnSelectionChangedNotifications() to force server roundtrips on each selection change.
A CheckBox always has a valid therefore values from methods
FormComponent.setRequired(boolean)
and FormComponent.isRequired()
are not taken
into account.
Field Summary |
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Fields inherited from class org.apache.wicket.markup.html.form.FormComponent |
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FLAG_CONVERT_EMPTY_INPUT_STRING_TO_NULL, VALUE_SEPARATOR |
Fields inherited from class org.apache.wicket.Component |
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ENABLE, FLAG_INITIALIZED, FLAG_REMOVING_FROM_HIERARCHY, FLAG_RESERVED1, FLAG_RESERVED2, FLAG_RESERVED3, FLAG_RESERVED4, FLAG_RESERVED5, FLAG_RESERVED8, PARENT_PATH, PATH_SEPARATOR, RENDER |
Fields inherited from interface org.apache.wicket.markup.html.form.IOnChangeListener |
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INTERFACE |
Constructor Summary | |
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CheckBox(String id)
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CheckBox(String id,
IModel<Boolean> model)
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Method Summary | ||
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boolean |
checkRequired()
Checks if the form component's 'required' requirement is met by first checking FormComponent.isRequired() to see if it has to check for requirement. |
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getConverter(Class<C> type)
Final because we made FormComponent.convertInput() final and it no longer delegates to
getConverter(Class) |
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protected boolean |
getStatelessHint()
Returns whether the component can be stateless. |
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protected void |
onComponentTag(ComponentTag tag)
Processes the component tag. |
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void |
onSelectionChanged()
Called when a new option is selected. |
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protected void |
onSelectionChanged(Boolean newSelection)
Template method that can be overridden by clients that implement IOnChangeListener to be notified by onChange events of a select element. |
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protected boolean |
wantOnSelectionChangedNotifications()
Whether this component's onSelectionChanged event handler should called using javascript if the selection changes. |
Methods inherited from class org.apache.wicket.markup.html.form.LabeledWebMarkupContainer |
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getLabel |
Methods inherited from class org.apache.wicket.markup.html.WebMarkupContainer |
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getWebApplication, getWebPage, getWebRequest, getWebResponse, getWebSession |
Methods inherited from class org.apache.wicket.MarkupContainer |
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add, addOrReplace, autoAdd, contains, get, get, getAssociatedMarkup, getAssociatedMarkupStream, getMarkup, getMarkupType, internalAdd, internalInitialize, iterator, iterator, onAfterRenderChildren, onComponentTagBody, onRender, remove, remove, removeAll, renderAll, renderAssociatedMarkup, renderNext, replace, setDefaultModel, size, swap, toString, toString, visitChildren, visitChildren, visitChildren, visitChildren |
Methods inherited from class java.lang.Object |
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clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait |
Constructor Detail |
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public CheckBox(String id)
Component.Component(String)
public CheckBox(String id, IModel<Boolean> model)
id
- model
- Component.Component(String, IModel)
Method Detail |
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public void onSelectionChanged()
IOnChangeListener
onSelectionChanged
in interface IOnChangeListener
IOnChangeListener.onSelectionChanged()
protected void onSelectionChanged(Boolean newSelection)
Called when a option is selected of a dropdown list that wants to be notified of this event. This method is to be implemented by clients that want to be notified of selection events.
newSelection
- The newly selected object of the backing model NOTE this is the same as you would
get by calling getModelObject() if the new selection were currentprotected boolean wantOnSelectionChangedNotifications()
protected boolean getStatelessHint()
Component
getStatelessHint
in class Component
Component.getStatelessHint()
protected void onComponentTag(ComponentTag tag)
onComponentTag
in class FormComponent<Boolean>
tag
- Tag to modifyComponent.onComponentTag(ComponentTag)
public final <C> IConverter<C> getConverter(Class<C> type)
FormComponent.convertInput()
final and it no longer delegates to
getConverter(Class)
getConverter
in interface IConverterLocator
getConverter
in class Component
C
- The object to convert from and to Stringtype
- The type to convert to
Component.getConverter(java.lang.Class)
public boolean checkRequired()
FormComponent
FormComponent.isRequired()
to see if it has to check for requirement. If that is true then by
default it checks if the input is null or an empty String
Strings.isEmpty(CharSequence)
Subclasses that overwrite this method should also call FormComponent.isRequired()
first.
checkRequired
in class FormComponent<Boolean>
Strings.isEmpty(CharSequence)
,
FormComponent.isInputNullable()
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