org.zkoss.zul
Class Combobutton

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


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