org.zkoss.zul
Class Combobutton

java.lang.Object
  org.zkoss.zk.ui.AbstractComponent
      org.zkoss.zk.ui.HtmlBasedComponent
          org.zkoss.zul.impl.XulElement
              org.zkoss.zul.impl.LabelElement
                  org.zkoss.zul.impl.LabelImageElement
                      org.zkoss.zul.Button
                          org.zkoss.zul.Combobutton

All Implemented Interfaces:

java.io.Serializable, java.lang.Cloneable, Component, Disable, Scope, ComponentCtrl

public class Combobutton
extends Button

A combo button. A combo button consists of a button Combobutton and a popup window Popup. It is similar to Bandbox except the input box is changed to button.

Default getZclass(): z-combobutton. If AbstractComponent.getMold() is toolbar, "z-combobutton-toolbar" is assumed.(since 6.5.0)

Events: onClick
Developers can listen to the onClick event.

Events: onOpen
Developers can listen to the onOpen event and initializes it when OpenEvent.isOpen() is true, and/or clean up if false.

Note: to have better performance, onOpen is sent only if a non-deferrable event listener is registered (see Deferrable).

Since:

6.0.0

Author:

benbai

See Also:

Serialized Form

Nested Class Summary

Nested classes/interfaces inherited from class org.zkoss.zul.impl.LabelImageElement

LabelImageElement.ExtraCtrl

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

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

CE_BUSY_IGNORE, CE_DUPLICATE_IGNORE, CE_IMPORTANT, CE_NON_DEFERRABLE, CE_REPEAT_IGNORE

Constructor Summary

Combobutton()

Combobutton(java.lang.String value)

Method Summary

void	beforeChildAdded(Component newChild, Component refChild) Default: does nothing.
void	close() Closes the child if it was dropped down.
Popup	getDropdown() Returns the dropdown window belonging to this combo button.
java.lang.String	getZclass() Returns the ZK Cascading Style class(es) for this component.
boolean	isAutodrop() Returns whether to automatically drop the popup if user hovers on this Combobutton.
protected boolean	isChildable() No child is allowed.
boolean	isOpen() Returns whether this combobutton is open.
void	open() Drops down the child.
protected void	renderProperties(ContentRenderer renderer) Renders the content of this component, excluding the enclosing tags and children.
void	service(AuRequest request, boolean everError) Processes an AU request.
void	setAutodrop(boolean autodrop) Sets whether to automatically drop the popup if user hovers on this Combobutton.
void	setOpen(boolean open) Drops down or closes the child, only works while visible.
void	setUpload(java.lang.String upload) Combobutton does not support file upload

Methods inherited from class org.zkoss.zul.Button

clone, getAutodisable, getDir, getHref, getOrient, getTabindex, getTarget, getType, getUpload, isDisabled, renderCrawlable, setAutodisable, setDir, setDisabled, setHref, setOrient, setTabindex, setTarget, setType, updateByClient

Methods inherited from class org.zkoss.zul.impl.LabelImageElement

getExtraCtrl, getHoverImage, getHoverImageContent, getImage, getImageContent, getSrc, isImageAssigned, setHoverImage, setHoverImageContent, setHoverImageContent, setImage, setImageContent, setImageContent, setSrc

Methods inherited from class org.zkoss.zul.impl.LabelElement

getLabel, setLabel

Methods inherited from class org.zkoss.zul.impl.XulElement

getContext, getCtrlKeys, getPopup, getTooltip, setContext, setContext, setCtrlKeys, setPopup, setPopup, setTooltip, setTooltip

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

focus, getAction, getDraggable, getDroppable, getHeight, getHflex, getLeft, getRenderdefer, getSclass, getStyle, getTooltiptext, getTop, getVflex, getWidth, getZindex, getZIndex, setAction, setClass, setDraggable, setDroppable, setFocus, setHeight, setHeightDirectly, setHflex, setHflexDirectly, setLeft, setLeftDirectly, setRenderdefer, setSclass, setStyle, setTooltiptext, setTop, setTopDirectly, setVflex, setWidth, setWidthDirectly, setZclass, setZindex, setZIndex, setZIndexDirectly

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

addAnnotation, addAnnotation, addClientEvent, addEventHandler, addEventListener, addEventListener, addForward, addForward, addForward, addForward, addMoved, addScopeListener, addSharedEventHandlerMap, appendChild, applyProperties, beforeChildRemoved, beforeParentChanged, detach, didActivate, didActivate, didDeserialize, didDeserialize, disableClientUpdate, equals, getAnnotatedProperties, getAnnotatedPropertiesBy, getAnnotation, getAnnotation, getAnnotations, getAnnotations, getAnnotations, getAttribute, getAttribute, getAttribute, getAttributeOrFellow, getAttributes, getAttributes, getAuService, getAutag, getChildren, getClientEvents, getDefaultMold, getDefinition, getDesktop, getEventHandler, getEventHandlerNames, getEventListenerMap, getEventListeners, getFellow, getFellow, getFellowIfAny, getFellowIfAny, getFellows, getFirstChild, getId, getLastChild, getListenerIterator, getMold, getNextSibling, getPage, getParent, getPreviousSibling, getRoot, getSpaceOwner, getStubonly, getTemplate, getTemplateNames, getUuid, getWidgetAttribute, getWidgetAttributeNames, getWidgetClass, getWidgetListener, getWidgetListenerNames, getWidgetOverride, getWidgetOverrideNames, hasAttribute, hasAttribute, hasAttribute, hasAttributeOrFellow, hasFellow, hasFellow, insertBefore, invalidate, isInvalidated, isListenerAvailable, isVisible, onChildAdded, onChildRemoved, onPageAttached, onPageDetached, onWrongValue, query, queryAll, redraw, redrawChildren, removeAttribute, removeAttribute, removeAttribute, removeChild, removeEventListener, removeForward, removeForward, removeScopeListener, render, render, render, replace, response, response, response, service, sessionDidActivate, sessionWillPassivate, setAttribute, setAttribute, setAttribute, setAuService, setAutag, setDefinition, setDefinition, setId, setMold, setPage, setPageBefore, setParent, setStubonly, setStubonly, setTemplate, setVisible, setVisibleDirectly, setWidgetAttribute, setWidgetClass, setWidgetListener, setWidgetOverride, smartUpdate, smartUpdate, smartUpdate, smartUpdate, smartUpdate, smartUpdate, smartUpdate, smartUpdate, smartUpdate, smartUpdateWidgetListener, smartUpdateWidgetOverride, toString, willPassivate, willPassivate, willSerialize, willSerialize

Methods inherited from class java.lang.Object

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

Constructor Detail

Combobutton

public Combobutton()

Combobutton

public Combobutton(java.lang.String value)
            throws WrongValueException

Throws:

WrongValueException

Method Detail

getDropdown

public Popup getDropdown()

Returns the dropdown window belonging to this combo button.

isAutodrop

public boolean isAutodrop()

Returns whether to automatically drop the popup if user hovers on this Combobutton.

Default: false.

setAutodrop

public void setAutodrop(boolean autodrop)

Sets whether to automatically drop the popup if user hovers on this Combobutton.

setOpen

public void setOpen(boolean open)

Drops down or closes the child, only works while visible.

See Also:

open(), close()

isOpen

public boolean isOpen()

Returns whether this combobutton is open.

Default: false.

Since:

6.0.0

open

public void open()

Drops down the child. The same as setOpen(true).

close

public void close()

Closes the child if it was dropped down. The same as setOpen(false).

getZclass

public java.lang.String getZclass()

Description copied from class: HtmlBasedComponent

Returns the ZK Cascading Style class(es) for this component. It usually depends on the implementation of the mold (@{link #getMold}).

Default: null (the default value depends on element).

HtmlBasedComponent.setZclass(java.lang.String)) will completely replace the default style of a component. In other words, the default style of a component is associated with the default value of HtmlBasedComponent.getZclass(). Once it is changed, the default style won't be applied at all. If you want to perform small adjustments, use HtmlBasedComponent.setSclass(java.lang.String) instead.

Overrides:

getZclass in class Button

See Also:

HtmlBasedComponent.getSclass()

renderProperties

protected void renderProperties(ContentRenderer renderer)
                         throws java.io.IOException

Description copied from class: HtmlBasedComponent

Renders the content of this component, excluding the enclosing tags and children.

See also ZK Client-side Reference: Property Rendering

Overrides:

renderProperties in class Button

Throws:

java.io.IOException

service

public void service(AuRequest request,
                    boolean everError)

Description copied from class: HtmlBasedComponent

Processes an AU request.

Default: it handles onClick, onDoubleClick, onRightClick onMove, onSize, onZIndex.

Specified by:

service in interface ComponentCtrl

Overrides:

service in class HtmlBasedComponent

everError - whether any error ever occurred before processing this request.

See Also:

AbstractComponent.setAuService(org.zkoss.zk.au.AuService)

beforeChildAdded

public void beforeChildAdded(Component newChild,
                             Component refChild)

Description copied from class: AbstractComponent

Default: does nothing.

Specified by:

beforeChildAdded in interface ComponentCtrl

Overrides:

beforeChildAdded in class AbstractComponent

Parameters:

newChild - the child to be added (never null).

refChild - another child component that the new child will be inserted before it. If null, the new child will be the last child.

See Also:

ComponentCtrl.beforeChildAdded(org.zkoss.zk.ui.Component, org.zkoss.zk.ui.Component)

isChildable

protected boolean isChildable()

Description copied from class: Button

No child is allowed.

Overrides:

isChildable in class Button

setUpload

public void setUpload(java.lang.String upload)

Combobutton does not support file upload

Overrides:

setUpload in class Button

Parameters:

upload - a JavaScript class to handle the file upload at the client, or "true" if the default class is used, or null or "false" to disable the file download (and then this button behaves like a normal button).