Combobox (zk 9.5.1.3 API)

java.lang.Object
- org.zkoss.zk.ui.AbstractComponent
- - org.zkoss.zk.ui.HtmlBasedComponent
  - - org.zkoss.zul.impl.XulElement
    - - org.zkoss.zul.impl.InputElement
      - org.zkoss.zul.Textbox
        
        org.zkoss.zul.Combobox

All Implemented Interfaces:

java.io.Serializable, java.lang.Cloneable, Component, Disable, Readonly, Scope, ComponentCtrl, Constrainted
```
public class Combobox
extends Textbox
```
A combobox.
Non-XUL extension. It is used to replace XUL menulist. This class is more flexible than menulist, such as setAutocomplete(boolean) setAutodrop(boolean).
Default getZclass(): z-combobox.(since 3.5.0)
Events: onOpen, onSelect, onAfterRender
Developers can listen to the onOpen event and initializes it when OpenEvent.isOpen() is true, and/or clean up if false.
onAfterRender is sent when the model's data has been rendered.(since 5.0.4)
Besides assign a list model, you could assign a renderer (a ComboitemRenderer instance) to a combobox, such that the combobox will use this renderer to render the data returned by ListModel.getElementAt(int). If not assigned, the default renderer, which assumes a label per combo item, is used. In other words, the default renderer adds a label to a row by calling toString against the object returned by ListModel.getElementAt(int). (since 3.0.2)
Note: to have better performance, onOpen is sent only if a non-deferrable event listener is registered (see Deferrable).
Like Datebox, the value of a read-only comobobox (InputElement.isReadonly()) can be changed by dropping down the list and selecting an combo item (though users cannot type anything in the input box).

Author:

tomyeh

See Also:

Comboitem, Serialized Form

Nested Class Summary

Nested Classes
Modifier and Type Class and Description

protected class Combobox.ExtraCtrl
A utility class to implement HtmlBasedComponent.getExtraCtrl().
- Nested classes/interfaces inherited from class org.zkoss.zk.ui.AbstractComponent
  AbstractComponent.Children

Nested Classes
Modifier and Type	Class and Description
`protected class`	`Combobox.ExtraCtrl` A utility class to implement `HtmlBasedComponent.getExtraCtrl()`.

Field Summary
- Fields inherited from class org.zkoss.zul.impl.InputElement
  _value
- 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

Combobox()

Combobox(java.lang.String value)

Constructors
Constructor and Description
`Combobox()`
`Combobox(java.lang.String value)`

Method Summary

All Methods Instance Methods Concrete Methods
Modifier and Type	Method and Description
`Comboitem`	`appendItem(java.lang.String label)` Appends an item.
`void`	`beforeChildAdded(Component newChild, Component refChild)` Default: does nothing.
`java.lang.Object`	`clone()` Clones the component.
`void`	`close()` Closes the list of combo items (`Comboitem` if it was dropped down.
`protected java.lang.String`	`coerceToString(java.lang.Object value)` Coerces the value passed to `Textbox.setValue(java.lang.String)`.
`java.lang.Object`	`getExtraCtrl()` Returns the client control for this component.
`java.lang.String`	`getIconSclass()` Returns the iconSclass name of this Combobox.
`Comboitem`	`getItemAtIndex(int index)` Returns the item at the specified index.
`int`	`getItemCount()` Returns the number of items.
`<T> ComboitemRenderer<T>`	`getItemRenderer()` Returns the renderer to render each row, or null if the default renderer is used.
`java.util.List<Comboitem>`	`getItems()` Returns a 'live' list of all `Comboitem`.
`<T> ListModel<T>`	`getModel()` Returns the list model associated with this combobox, or null if this combobox is not associated with any list data model.
`java.lang.String`	`getPopupWidth()`
`PropertyAccess`	`getPropertyAccess(java.lang.String prop)` Returns the corresponding property access object from the given property name, if any.
`int`	`getSelectedIndex()` Returns the index of the selected item, or -1 if not selected.
`Comboitem`	`getSelectedItem()` Returns the selected item.
`java.lang.String`	`getZclass()` Returns the ZK Cascading Style class(es) for this component.
`boolean`	`isAutocomplete()` Returns whether to automatically complete this text box by matching the nearest item (`Comboitem`.
`boolean`	`isAutodrop()` Returns whether to automatically drop the list if users is changing this text box.
`boolean`	`isButtonVisible()` Returns whether the button (on the right of the textbox) is visible.
`protected boolean`	`isChildable()` Childable.
`boolean`	`isInstantSelect()` Returns true if onSelect event is sent as soon as user selects using keyboard navigation.
`boolean`	`isOpen()` Returns whether this combobox is open.
`void`	`onChildAdded(Component child)` Default: handles special event listeners.
`void`	`onChildRemoved(Component child)` Default: handles special event listeners.
`void`	`onInitRender(Event data)` Handles a private event, onInitRender.
`void`	`onPageAttached(Page newpage, Page oldpage)` Default: handles special event listeners.
`void`	`onPageDetached(Page page)` Default: handles special event listeners.
`void`	`open()` Drops down the list of combo items (`Comboitem`.
`Comboitem`	`removeItemAt(int index)` Removes the child item in the list box at the given index.
`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`	`sessionDidActivate(Page page)` Notification that the session, which owns this component, has just been activated (a.k.a., deserialized).
`void`	`sessionWillPassivate(Page page)` Notification that the session, which owns this component, is about to be passivated (a.k.a., serialized).
`void`	`setAutocomplete(boolean autocomplete)` Sets whether to automatically complete this text box by matching the nearest item (`Comboitem`.
`void`	`setAutodrop(boolean autodrop)` Sets whether to automatically drop the list if users is changing this text box.
`void`	`setButtonVisible(boolean visible)` Sets whether the button (on the right of the textbox) is visible.
`void`	`setEmptySearchMessage(java.lang.String msg)` Sets empty search message.
`void`	`setIconSclass(java.lang.String iconSclass)` Sets the iconSclass name of this Combobox.
`void`	`setInstantSelect(boolean instantSelect)` Sets the instantSelect attribute.
`void`	`setItemRenderer(ComboitemRenderer<?> renderer)` Sets the renderer which is used to render each row if `getModel()` is not null.
`void`	`setItemRenderer(java.lang.String clsnm)` Sets the renderer by use of a class name.
`void`	`setModel(ListModel<?> model)` Sets the list model associated with this combobox.
`void`	`setMultiline(boolean multiline)` Sets whether it is multiline.
`void`	`setOpen(boolean open)` Drops down or closes the list of combo items (`Comboitem`.
`void`	`setPopupWidth(java.lang.String popupWidth)` Sets the width of the popup of this component.
`void`	`setRows(int rows)` Sets the rows.
`void`	`setSelectedIndex(int jsel)` Deselects the currently selected items and selects the item with the given index.
`void`	`setSelectedItem(Comboitem item)` Deselects the currently selected items and selects the given item.

Methods inherited from class org.zkoss.zul.Textbox
checkBeforeSetRows, coerceFromString, getRows, getType, getValue, isMultiline, isSubmitByEnter, isTabbable, setHeight, setSubmitByEnter, setTabbable, setType, setValue, setVflex

Methods inherited from class org.zkoss.zul.impl.XulElement
getContext, getCtrlKeys, getPopup, getTooltip, setContext, setContext, setContextAttributes, setCtrlKeys, setPopup, setPopup, setPopupAttributes, setTooltip, setTooltip, setTooltipAttributes

Methods inherited from class org.zkoss.zk.ui.HtmlBasedComponent
addSclass, evalCSSFlex, focus, getAction, getDraggable, getDroppable, getHeight, getHflex, getLeft, getRenderdefer, getSclass, getStyle, getTabindex, getTabindexInteger, getTooltiptext, getTop, getVflex, getWidth, getZindex, getZIndex, removeSclass, removeSclass, setAction, setClass, setDraggable, setDroppable, setFocus, setHeight0, setHeightDirectly, setHflex, setHflex0, setHflexDirectly, setLeft, setLeftDirectly, setRenderdefer, setSclass, setStyle, setTabindex, setTabindex, setTooltiptext, setTop, setTopDirectly, 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, 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, invalidate, invalidatePartial, isInitialized, isInvalidated, isListenerAvailable, isVisible, 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, setParent, 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
  - Combobox
```
public Combobox()
```
  - Combobox
```
public Combobox(java.lang.String value)
         throws WrongValueException
```
    Throws:
    
    WrongValueException
- Method Detail
  - coerceToString
```
protected java.lang.String coerceToString(java.lang.Object value)
```
    Description copied from class: Textbox
    
    Coerces the value passed to Textbox.setValue(java.lang.String).
    Default: convert null to an empty string.
    
    Overrides:
    
    coerceToString in class Textbox
  - getModel
```
public <T> ListModel<T> getModel()
```
    Returns the list model associated with this combobox, or null if this combobox is not associated with any list data model.
    Note: for implementation of auto-complete, the result of getItemCount() is a subset of model. So, if the model implemented ListSubModel interface, you can't use the index of model to find the comboitem by getItemAtIndex(int).
    
    Since:
    
    3.0.2
    
    See Also:
    
    ListSubModel.getSubModel(Object, int)
  - setModel
```
public void setModel(ListModel<?> model)
```
    Sets the list model associated with this combobox. 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:
    
    UiException - if failed to initialize with the model
    
    Since:
    
    3.0.2
  - setEmptySearchMessage
```
public void setEmptySearchMessage(java.lang.String msg)
```
    Sets empty search message. This message would be displayed, when no matching results was found.
    
    Parameters:
    
    msg -
    
    Since:
    
    8.5.1
  - getItemRenderer
```
public <T> ComboitemRenderer<T> getItemRenderer()
```
    Returns the renderer to render each row, or null if the default renderer is used.
    
    Since:
    
    3.0.2
  - setItemRenderer
```
public void setItemRenderer(ComboitemRenderer<?> renderer)
```
    Sets the renderer which is used to render each row if getModel() is not null.
    Note: changing a render will not cause the combobox to re-render. If you want it to re-render, you could assign the same model again (i.e., setModel(getModel())), or fire an ListDataEvent event.
    
    Parameters:
    
    renderer - the renderer, or null to use the default.
    
    Throws:
    
    UiException - if failed to initialize with the model
    
    Since:
    
    3.0.2
  - setItemRenderer
```
public void setItemRenderer(java.lang.String clsnm)
                     throws java.lang.ClassNotFoundException,
                            java.lang.NoSuchMethodException,
                            java.lang.IllegalAccessException,
                            java.lang.InstantiationException,
                            java.lang.reflect.InvocationTargetException
```
    Sets the renderer by use of a class name. It creates an instance automatically.
    
    Throws:
    
    java.lang.ClassNotFoundException
    
    java.lang.NoSuchMethodException
    
    java.lang.IllegalAccessException
    
    java.lang.InstantiationException
    
    java.lang.reflect.InvocationTargetException
    
    Since:
    
    3.0.2
  - onInitRender
```
public void onInitRender(Event data)
```
    Handles a private event, onInitRender. It is used only for implementation, and you rarely need to invoke it explicitly.
    
    Since:
    
    3.0.2
  - isAutodrop
```
public boolean isAutodrop()
```
    Returns whether to automatically drop the list if users is changing this text box.
    Default: false.
  - setAutodrop
```
public void setAutodrop(boolean autodrop)
```
    Sets whether to automatically drop the list if users is changing this text box.
  - isAutocomplete
```
public boolean isAutocomplete()
```
    Returns whether to automatically complete this text box by matching the nearest item (Comboitem. It is also known as auto-type-ahead.
    Default: true (since 5.0.0).
    If true, the nearest item will be searched and the text box is updated automatically. If false, user has to click the item or use the DOWN or UP keys to select it back.
    Don't confuse it with the auto-completion feature mentioned by other framework. Such kind of auto-completion is supported well by listening to the onChanging event.
  - setAutocomplete
```
public void setAutocomplete(boolean autocomplete)
```
    Sets whether to automatically complete this text box by matching the nearest item (Comboitem.
  - isOpen
```
public boolean isOpen()
```
    Returns whether this combobox is open.
    Default: false.
    
    Since:
    
    6.0.0
  - setOpen
```
public void setOpen(boolean open)
```
    Drops down or closes the list of combo items (Comboitem. only works while visible
    
    Since:
    
    3.0.1
    
    See Also:
    
    open(), close()
  - open
```
public void open()
```
    Drops down the list of combo items (Comboitem. It is the same as setOpen(true).
    
    Since:
    
    3.0.1
  - close
```
public void close()
```
    Closes the list of combo items (Comboitem if it was dropped down. It is the same as setOpen(false).
    
    Since:
    
    3.0.1
  - isButtonVisible
```
public boolean isButtonVisible()
```
    Returns whether the button (on the right of the textbox) is visible.
    Default: true.
  - setButtonVisible
```
public void setButtonVisible(boolean visible)
```
    Sets whether the button (on the right of the textbox) is visible.
  - isInstantSelect
```
public boolean isInstantSelect()
```
    Returns true if onSelect event is sent as soon as user selects using keyboard navigation.
    Default: true
    
    Since:
    
    8.6.1
  - setInstantSelect
```
public void setInstantSelect(boolean instantSelect)
```
    Sets the instantSelect attribute. When the attribute is true, onSelect event will be fired as soon as user selects using keyboard navigation. If the attribute is false, user needs to press Enter key to finish the selection using keyboard navigation.
    
    Since:
    
    8.6.1
  - getItems
```
public java.util.List<Comboitem> getItems()
```
    Returns a 'live' list of all Comboitem. By live we mean you can add or remove them directly with the List interface.
    Currently, it is the same as AbstractComponent.getChildren(). However, we might add other kind of children in the future.
  - getItemCount
```
public int getItemCount()
```
    Returns the number of items.
  - getItemAtIndex
```
public Comboitem getItemAtIndex(int index)
```
    Returns the item at the specified index.
  - appendItem
```
public Comboitem appendItem(java.lang.String label)
```
    Appends an item.
  - removeItemAt
```
public Comboitem removeItemAt(int index)
```
    Removes the child item in the list box at the given index.
    
    Returns:
    
    the removed item.
  - getSelectedItem
```
public Comboitem getSelectedItem()
```
    Returns the selected item.
    
    Since:
    
    2.4.0
  - setSelectedItem
```
public void setSelectedItem(Comboitem item)
```
    Deselects the currently selected items and selects the given item.
    Note: if the label of comboitem has the same more than one, the first comboitem will be selected at client side, it is a limitation of Combobox and it is different from Listbox.
    
    Since:
    
    3.0.2
  - setSelectedIndex
```
public void setSelectedIndex(int jsel)
```
    Deselects the currently selected items and selects the item with the given index.
    Note: if the label of comboitem has the same more than one, the first comboitem will be selected at client side, it is a limitation of Combobox and it is different from Listbox.
    
    Since:
    
    3.0.2
  - getSelectedIndex
```
public int getSelectedIndex()
```
    Returns the index of the selected item, or -1 if not selected.
    
    Since:
    
    3.0.1
  - getPopupWidth
```
public java.lang.String getPopupWidth()
```
    Returns:
    
    the width of the popup of this component
    
    Since:
    
    8.0.3
  - setPopupWidth
```
public void setPopupWidth(java.lang.String popupWidth)
```
    Sets the width of the popup of this component. If the input is a percentage, the popup width will be calculated by multiplying the width of this component with the percentage. (e.g. if the input string is 130%, and the width of this component is 300px, the popup width will be 390px = 300px * 130%) Others will be set directly.
    
    Parameters:
    
    popupWidth - the width of the popup of this component
    
    Since:
    
    8.0.3
  - setMultiline
```
public void setMultiline(boolean multiline)
```
    Description copied from class: Textbox
    
    Sets whether it is multiline.
    
    Overrides:
    
    setMultiline in class Textbox
  - setRows
```
public void setRows(int rows)
```
    Description copied from class: Textbox
    
    Sets the rows.
    Note: Not allowed to set rows and height/vflex at the same time
    
    Overrides:
    
    setRows in class Textbox
  - getExtraCtrl
```
public java.lang.Object getExtraCtrl()
```
    Description copied from class: HtmlBasedComponent
    
    Returns the client control for this component. It is used only by component developers.
    Default: creates an instance of HtmlBasedComponent.ExtraCtrl.
    
    Specified by:
    
    getExtraCtrl in interface ComponentCtrl
    
    Overrides:
    
    getExtraCtrl in class HtmlBasedComponent
    
    Returns:
    
    null if no special handling required. If the component requires some special controls, it could return an object that implements one or several interfaces in the org.zkoss.zk.ui.ext.render package. For example, Cropper.
    
    See Also:
    
    ComponentCtrl.getExtraCtrl()
  - setIconSclass
```
public void setIconSclass(java.lang.String iconSclass)
```
    Sets the iconSclass name of this Combobox.
    
    Parameters:
    
    iconSclass - String
    
    Since:
    
    8.6.2
  - getIconSclass
```
public java.lang.String getIconSclass()
```
    Returns the iconSclass name of this Combobox.
    
    Returns:
    
    the iconSclass name
    
    Since:
    
    8.6.2
  - 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 (AbstractComponent.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 Textbox
    
    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 Textbox
    
    Throws:
    
    java.io.IOException
  - service
```
public void service(AuRequest request,
                    boolean everError)
```
    Processes an AU request.
    Default: in addition to what are handled by InputElement.service(org.zkoss.zk.au.AuRequest, boolean), it also handles onOpen and onSelect.
    
    Specified by:
    
    service in interface ComponentCtrl
    
    Overrides:
    
    service in class InputElement
    
    everError - whether any error ever occurred before processing this request.
    
    Since:
    
    5.0.0
    
    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()
```
    Childable.
    
    Overrides:
    
    isChildable in class InputElement
  - onChildAdded
```
public void onChildAdded(Component child)
```
    Description copied from class: AbstractComponent
    
    Default: handles special event listeners.
    
    Specified by:
    
    onChildAdded in interface ComponentCtrl
    
    Overrides:
    
    onChildAdded in class AbstractComponent
    
    See Also:
    
    ComponentCtrl.onChildAdded(org.zkoss.zk.ui.Component)
  - onChildRemoved
```
public void onChildRemoved(Component child)
```
    Description copied from class: AbstractComponent
    
    Default: handles special event listeners.
    
    Specified by:
    
    onChildRemoved in interface ComponentCtrl
    
    Overrides:
    
    onChildRemoved in class AbstractComponent
    
    See Also:
    
    ComponentCtrl.onChildRemoved(org.zkoss.zk.ui.Component)
  - clone
```
public java.lang.Object clone()
```
    Description copied from interface: Component
    
    Clones the component. All of its children and descendants are cloned. Also, ID are preserved.
    
    Specified by:
    
    clone in interface Component
    
    Overrides:
    
    clone in class Textbox
    
    Returns:
    
    the new component. Notice that it doesn't belong to any page, nor desktop. It doesn't have a parent, either.
  - sessionWillPassivate
```
public void sessionWillPassivate(Page page)
```
    Description copied from interface: ComponentCtrl
    
    Notification that the session, which owns this component, is about to be passivated (a.k.a., serialized).
    Note: only root components are notified by this method.
    
    Specified by:
    
    sessionWillPassivate in interface ComponentCtrl
    
    Overrides:
    
    sessionWillPassivate in class AbstractComponent
  - sessionDidActivate
```
public void sessionDidActivate(Page page)
```
    Description copied from interface: ComponentCtrl
    
    Notification that the session, which owns this component, has just been activated (a.k.a., deserialized).
    Note: only root components are notified by this method.
    
    Specified by:
    
    sessionDidActivate in interface ComponentCtrl
    
    Overrides:
    
    sessionDidActivate in class AbstractComponent
  - getPropertyAccess
```
public PropertyAccess getPropertyAccess(java.lang.String prop)
```
    Description copied from interface: ComponentCtrl
    
    Returns the corresponding property access object from the given property name, if any.
    
    Specified by:
    
    getPropertyAccess in interface ComponentCtrl
    
    Overrides:
    
    getPropertyAccess in class Textbox
    
    Parameters:
    
    prop - the name of the property
    
    Returns:
    
    null it means not to support for the property name.
  - onPageAttached
```
public void onPageAttached(Page newpage,
                           Page oldpage)
```
    Description copied from class: AbstractComponent
    
    Default: handles special event listeners.
    
    Specified by:
    
    onPageAttached in interface ComponentCtrl
    
    Overrides:
    
    onPageAttached in class AbstractComponent
    
    Parameters:
    
    newpage - the new page (never null).
    
    oldpage - the previous page, if any, or null if it didn't belong to any page.
    
    See Also:
    
    ComponentCtrl.onPageAttached(org.zkoss.zk.ui.Page, org.zkoss.zk.ui.Page)
  - onPageDetached
```
public void onPageDetached(Page page)
```
    Description copied from class: AbstractComponent
    
    Default: handles special event listeners.
    
    Specified by:
    
    onPageDetached in interface ComponentCtrl
    
    Overrides:
    
    onPageDetached in class AbstractComponent
    
    Parameters:
    
    page - the previous page (never null)
    
    See Also:
    
    ComponentCtrl.onPageDetached(org.zkoss.zk.ui.Page)

Class Combobox

Nested Class Summary

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

Field Summary

Fields inherited from class org.zkoss.zul.impl.InputElement

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

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

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

Constructor Summary

Method Summary

Methods inherited from class org.zkoss.zul.Textbox

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

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

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

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

Methods inherited from class java.lang.Object

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

Constructor Detail

Combobox

Combobox

Method Detail

coerceToString

getModel

setModel

setEmptySearchMessage

getItemRenderer

setItemRenderer

setItemRenderer

onInitRender

isAutodrop

setAutodrop

isAutocomplete

setAutocomplete

isOpen

setOpen

open

close

isButtonVisible

setButtonVisible

isInstantSelect

setInstantSelect

getItems

getItemCount

getItemAtIndex

appendItem

removeItemAt

getSelectedItem

setSelectedItem

setSelectedIndex

getSelectedIndex

getPopupWidth

setPopupWidth

setMultiline

setRows

getExtraCtrl

setIconSclass

getIconSclass

getZclass

renderProperties

service

beforeChildAdded

isChildable

onChildAdded

onChildRemoved

clone

sessionWillPassivate

sessionDidActivate

getPropertyAccess

onPageAttached

onPageDetached