org.zkoss.zul

Class Selectbox

java.lang.Object

org.zkoss.zk.ui.AbstractComponent

org.zkoss.zk.ui.HtmlBasedComponent

org.zkoss.zul.Selectbox

All Implemented Interfaces:

Serializable, Cloneable, org.zkoss.zk.ui.Component, org.zkoss.zk.ui.ext.Disable, org.zkoss.zk.ui.ext.Scope, org.zkoss.zk.ui.sys.ComponentCtrl

public class Selectbox
extends org.zkoss.zk.ui.HtmlBasedComponent
implements org.zkoss.zk.ui.ext.Disable

A light weight dropdown list.

Default getZclass(): z-selectbox. It does not create child widgets for each data, so the memory usage is much lower at the server. However, the implementation is based on HTML SELECT and OPTION tags, so the functionality is not as rich as Listbox.

Since:

6.0.0

Author:

jumperchen

See Also:

Serialized Form

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
protected class	Selectbox.ExtraCtrl A utility class to implement HtmlBasedComponent.getExtraCtrl().

Nested classes/interfaces inherited from class org.zkoss.zk.ui.AbstractComponent

org.zkoss.zk.ui.AbstractComponent.Children

Field Summary

Fields inherited from class org.zkoss.zk.ui.HtmlBasedComponent

_zclass

Fields inherited from interface org.zkoss.zk.ui.Component

APPLICATION_SCOPE, COMPONENT_SCOPE, DESKTOP_SCOPE, PAGE_SCOPE, REQUEST_SCOPE, SESSION_SCOPE, SPACE_SCOPE

Fields inherited from interface org.zkoss.zk.ui.sys.ComponentCtrl

AFTER_CHILD_ADDED, AFTER_CHILD_REMOVED, AFTER_PAGE_ATTACHED, AFTER_PAGE_DETACHED, CE_BUSY_IGNORE, CE_DUPLICATE_IGNORE, CE_IMPORTANT, CE_NON_DEFERRABLE, CE_REPEAT_IGNORE

Constructor Summary

Constructors

Constructor and Description
Selectbox()

Method Summary

Modifier and Type	Method and Description
Object	clone()
Object	getExtraCtrl()
<T> ItemRenderer<T>	getItemRenderer() Returns the renderer to render each item, or null if the default renderer is used.
<T> ListModel<T>	getModel() Returns the model associated with this selectbox, or null if this selectbox is not associated with any list data model.
String	getName() Returns the name of this component.
<T> ItemRenderer<T>	getRealRenderer()
int	getSelectedIndex() Returns the index of the selected item (-1 if no one is selected).
String	getZclass()
void	invalidate()
protected boolean	isChildable()
boolean	isDisabled() Returns whether it is disabled.
void	onInitRender()
void	onInitRenderNow()
void	onPageAttached(org.zkoss.zk.ui.Page newpage, org.zkoss.zk.ui.Page oldpage)
void	onPageDetached(org.zkoss.zk.ui.Page page)
protected void	renderProperties(org.zkoss.zk.ui.sys.ContentRenderer renderer)
void	service(org.zkoss.zk.au.AuRequest request, boolean everError)
void	sessionDidActivate(org.zkoss.zk.ui.Page page)
void	sessionWillPassivate(org.zkoss.zk.ui.Page page)
void	setDisabled(boolean disabled) Sets whether it is disabled.
void	setItemRenderer(ItemRenderer<?> renderer) Sets the renderer which is used to render each item if getModel() is not null.
void	setItemRenderer(String clsnm) Sets the renderer by use of a class name.
void	setModel(ListModel<?> model) Sets the list model associated with this selectbox.
void	setName(String name) Sets the name of this component.
void	setParent(org.zkoss.zk.ui.Component parent)
void	setSelectedIndex(int jsel) Selects the item with the given index.

Methods inherited from class org.zkoss.zk.ui.HtmlBasedComponent

addSclass, evalCSSFlex, focus, getAction, getDraggable, getDroppable, getHeight, getHflex, getLeft, getPropertyAccess, getRenderdefer, getSclass, getStyle, getTabindex, getTabindexInteger, getTooltiptext, getTop, getVflex, getWidth, getZindex, getZIndex, removeSclass, removeSclass, setAction, setClass, setDraggable, setDroppable, setFocus, setHeight, setHeight0, setHeightDirectly, setHflex, setHflex0, setHflexDirectly, setLeft, setLeftDirectly, setRenderdefer, setSclass, setStyle, setTabindex, setTabindex, setTooltiptext, setTop, setTopDirectly, setVflex, setVflex0, setVflexDirectly, setWidth, setWidth0, setWidthDirectly, setZclass, setZindex, setZIndex, setZIndexDirectly

Methods inherited from class org.zkoss.zk.ui.AbstractComponent

addAnnotation, addAnnotation, addCallback, addClientEvent, addEventHandler, addEventListener, addEventListener, addForward, addForward, addForward, addForward, addMoved, addRedrawCallback, addScopeListener, addShadowRoot, addShadowRootBefore, addSharedEventHandlerMap, appendChild, applyProperties, beforeChildAdded, beforeChildRemoved, beforeParentChanged, detach, didActivate, didActivate, didDeserialize, didDeserialize, disableBindingAnnotation, disableClientUpdate, enableBindingAnnotation, getAnnotatedProperties, getAnnotatedPropertiesBy, getAnnotation, getAnnotation, getAnnotations, getAnnotations, getAnnotations, getAttribute, getAttribute, getAttribute, getAttributeOrFellow, getAttributes, getAttributes, getAuService, getAutag, getCallback, getChildren, getClientAttribute, getClientDataAttribute, getClientEvents, getDefaultMold, getDefinition, getDesktop, getEventHandler, getEventHandlerNames, getEventListenerMap, getEventListeners, getFellow, getFellow, getFellowIfAny, getFellowIfAny, getFellows, getFirstChild, getId, getLastChild, getListenerIterator, getMold, getNextSibling, getPage, getParent, getPreviousSibling, getRedrawCallback, getRoot, getShadowFellowIfAny, getShadowRoots, getShadowVariable, getShadowVariable, getShadowVariable0, getSpaceOwner, getSpecialRendererOutput, getStubonly, getSubBindingAnnotationCount, getTemplate, getTemplateNames, getUuid, getWidgetAttribute, getWidgetAttributeNames, getWidgetClass, getWidgetListener, getWidgetListenerNames, getWidgetOverride, getWidgetOverrideNames, hasAttribute, hasAttribute, hasAttribute, hasAttributeOrFellow, hasBindingAnnotation, hasFellow, hasFellow, hasSubBindingAnnotation, insertBefore, invalidatePartial, isInitialized, isInvalidated, isListenerAvailable, isVisible, onChildAdded, onChildRemoved, onWrongValue, query, queryAll, redraw, redrawChildren, removeAttribute, removeAttribute, removeAttribute, removeCallback, removeChild, removeEventListener, removeForward, removeForward, removeRedrawCallback, removeScopeListener, removeShadowRoot, render, render, render, replace, response, response, response, service, setAttribute, setAttribute, setAttribute, setAuService, setAutag, setClientAttribute, setClientDataAttribute, setDefinition, setDefinition, setId, setMold, setPage, setPageBefore, setStubonly, setStubonly, setSubBindingAnnotationCount, setTemplate, setVisible, setVisibleDirectly, setWidgetAttribute, setWidgetClass, setWidgetListener, setWidgetOverride, smartUpdate, smartUpdate, smartUpdate, smartUpdate, smartUpdate, smartUpdate, smartUpdate, smartUpdate, smartUpdate, smartUpdateWidgetListener, smartUpdateWidgetOverride, toString, updateByClient, updateSubBindingAnnotationCount, willPassivate, willPassivate, willSerialize, willSerialize

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.zkoss.zk.ui.sys.ComponentCtrl

invalidatePartial

Constructor Detail

Selectbox

public Selectbox()

Method Detail

getZclass

public String getZclass()

Overrides:

getZclass in class org.zkoss.zk.ui.HtmlBasedComponent

getSelectedIndex

public int getSelectedIndex()

Returns the index of the selected item (-1 if no one is selected).

setSelectedIndex

public void setSelectedIndex(int jsel)

Selects the item with the given index.

getItemRenderer

public <T> ItemRenderer<T> getItemRenderer()

Returns the renderer to render each item, or null if the default renderer is used.

setItemRenderer

public void setItemRenderer(ItemRenderer<?> renderer)

Sets the renderer which is used to render each item if getModel() is not null.

Note: changing a render will not cause the selectbox to re-render. If you want it to re-render, you could assign the same model again (i.e., setModel(null) and than setModel(oldModel)), or fire an ListDataEvent event.

Parameters:

renderer - the renderer, or null to use the default.

Throws:

org.zkoss.zk.ui.UiException - if failed to initialize with the model

setItemRenderer

public void setItemRenderer(String clsnm)
                     throws ClassNotFoundException,
                            NoSuchMethodException,
                            IllegalAccessException,
                            InstantiationException,
                            InvocationTargetException

Sets the renderer by use of a class name. It creates an instance automatically.

Throws:

ClassNotFoundException

NoSuchMethodException

IllegalAccessException

InstantiationException

InvocationTargetException

isDisabled

public boolean isDisabled()

Returns whether it is disabled.

Default: false.

Specified by:

isDisabled in interface org.zkoss.zk.ui.ext.Disable

isChildable

protected boolean isChildable()

Overrides:

isChildable in class org.zkoss.zk.ui.AbstractComponent

setDisabled

public void setDisabled(boolean disabled)

Sets whether it is disabled.

Specified by:

setDisabled in interface org.zkoss.zk.ui.ext.Disable

getName

public String getName()

Returns the name of this component.

Default: null.

The name is used only to work with "legacy" Web application that handles user's request by servlets. It works only with HTTP/HTML-based browsers. It doesn't work with other kind of clients.

Don't use this method if your application is purely based on ZK's event-driven model.

setName

public void setName(String name)

Sets the name of this component.

The name is used only to work with "legacy" Web application that handles user's request by servlets. It works only with HTTP/HTML-based browsers. It doesn't work with other kind of clients.

Don't use this method if your application is purely based on ZK's event-driven model.

Parameters:

name - the name of this component.

setModel

public void setModel(ListModel<?> model)

Sets the list model associated with this selectbox. If a non-null model is assigned, no matter whether it is the same as the previous, it will always cause re-render.

Parameters:

model - the list model to associate, or null to dissociate any previous model.

Throws:

org.zkoss.zk.ui.UiException - if failed to initialize with the model

onInitRender

public void onInitRender()

onInitRenderNow

public void onInitRenderNow()

getModel

public <T> ListModel<T> getModel()

Returns the model associated with this selectbox, or null if this selectbox is not associated with any list data model.

getRealRenderer

public <T> ItemRenderer<T> getRealRenderer()

invalidate

public void invalidate()

Specified by:

invalidate in interface org.zkoss.zk.ui.Component

Overrides:

invalidate in class org.zkoss.zk.ui.AbstractComponent

setParent

public void setParent(org.zkoss.zk.ui.Component parent)

Specified by:

setParent in interface org.zkoss.zk.ui.Component

Overrides:

setParent in class org.zkoss.zk.ui.AbstractComponent

onPageAttached

public void onPageAttached(org.zkoss.zk.ui.Page newpage,
                           org.zkoss.zk.ui.Page oldpage)

Specified by:

onPageAttached in interface org.zkoss.zk.ui.sys.ComponentCtrl

Overrides:

onPageAttached in class org.zkoss.zk.ui.AbstractComponent

onPageDetached

public void onPageDetached(org.zkoss.zk.ui.Page page)

Specified by:

onPageDetached in interface org.zkoss.zk.ui.sys.ComponentCtrl

Overrides:

onPageDetached in class org.zkoss.zk.ui.AbstractComponent

renderProperties

protected void renderProperties(org.zkoss.zk.ui.sys.ContentRenderer renderer)
                         throws IOException

Overrides:

renderProperties in class org.zkoss.zk.ui.HtmlBasedComponent

Throws:

IOException

service

public void service(org.zkoss.zk.au.AuRequest request,
                    boolean everError)

Specified by:

service in interface org.zkoss.zk.ui.sys.ComponentCtrl

Overrides:

service in class org.zkoss.zk.ui.HtmlBasedComponent

clone

public Object clone()

Specified by:

clone in interface org.zkoss.zk.ui.Component

Overrides:

clone in class org.zkoss.zk.ui.HtmlBasedComponent

sessionWillPassivate

public void sessionWillPassivate(org.zkoss.zk.ui.Page page)

Specified by:

sessionWillPassivate in interface org.zkoss.zk.ui.sys.ComponentCtrl

Overrides:

sessionWillPassivate in class org.zkoss.zk.ui.AbstractComponent

sessionDidActivate

public void sessionDidActivate(org.zkoss.zk.ui.Page page)

Specified by:

sessionDidActivate in interface org.zkoss.zk.ui.sys.ComponentCtrl

Overrides:

sessionDidActivate in class org.zkoss.zk.ui.AbstractComponent

getExtraCtrl

public Object getExtraCtrl()

Specified by:

getExtraCtrl in interface org.zkoss.zk.ui.sys.ComponentCtrl

Overrides:

getExtraCtrl in class org.zkoss.zk.ui.HtmlBasedComponent