org.zkoss.zul
Class Panelchildren

java.lang.Object
  org.zkoss.zk.ui.AbstractComponent
      org.zkoss.zk.ui.HtmlBasedComponent
          org.zkoss.zul.impl.XulElement
              org.zkoss.zul.Panelchildren

All Implemented Interfaces:

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

public class Panelchildren
extends XulElement

Panelchildren is used for Panel component to manage each child who will be shown in the body of Panel. Note that the size of Panelchildren is automatically calculated by Panel so both setWidth(String) and setHeight(String) are read-only.

Default getZclass(): z-panelchildren.

Since:

3.5.0

Author:

jumperchen

See Also:

Serialized Form

Nested Class Summary

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

HtmlBasedComponent.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

Panelchildren()

Method Summary

void	beforeParentChanged(Component parent) Default: does nothing.
java.lang.String	getHflex() Returns horizontal flex hint of this component.
java.lang.String	getVflex() Return vertical flex hint of this component.
java.lang.String	getZclass() Returns the ZK Cascading Style class(es) for this component.
protected void	renderProperties(ContentRenderer renderer) Renders the content of this component, excluding the enclosing tags and children.
void	setHeight(java.lang.String height) This method is unsupported.
void	setHflex(java.lang.String flex) This method is unsupported.
void	setVflex(java.lang.String flex) This method is unsupported.
void	setWidth(java.lang.String width) This method is unsupported.
protected void	smartUpdate(java.lang.String attr, java.lang.Object value) Smart-updates a property of the peer widget associated with the component, running at the client, with the given value.

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

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

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

focus, getAction, getDraggable, getDroppable, getExtraCtrl, getHeight, getLeft, getRenderdefer, getSclass, getStyle, getTooltiptext, getTop, getWidth, getZindex, getZIndex, service, setAction, setClass, setDraggable, setDroppable, setFocus, setHeightDirectly, setHflexDirectly, setLeft, setLeftDirectly, setRenderdefer, setSclass, setStyle, setTooltiptext, setTop, setTopDirectly, 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, beforeChildAdded, beforeChildRemoved, 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, isChildable, 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, smartUpdateWidgetListener, smartUpdateWidgetOverride, toString, updateByClient, willPassivate, willPassivate, willSerialize, willSerialize

Methods inherited from class java.lang.Object

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

Constructor Detail

Panelchildren

public Panelchildren()

Method Detail

beforeParentChanged

public void beforeParentChanged(Component parent)

Description copied from class: AbstractComponent

Default: does nothing.

Specified by:

beforeParentChanged in interface ComponentCtrl

Overrides:

beforeParentChanged in class AbstractComponent

Parameters:

parent - the new parent. If null, it means detachment.

See Also:

ComponentCtrl.beforeParentChanged(org.zkoss.zk.ui.Component)

setWidth

public void setWidth(java.lang.String width)

This method is unsupported. Please use HtmlBasedComponent.setWidth(String) instead.

Overrides:

setWidth in class HtmlBasedComponent

See Also:

HtmlBasedComponent.setWidthDirectly(java.lang.String), AbstractComponent.disableClientUpdate(boolean)

setHeight

public void setHeight(java.lang.String height)

This method is unsupported. Please use HtmlBasedComponent.setHeight(String) instead.

Overrides:

setHeight in class HtmlBasedComponent

getHflex

public java.lang.String getHflex()

Description copied from class: HtmlBasedComponent

Returns horizontal flex hint of this component.

Default: null

Overrides:

getHflex in class HtmlBasedComponent

Returns:

horizontal flex hint of this component.

See Also:

HtmlBasedComponent.setHflex(java.lang.String)

getVflex

public java.lang.String getVflex()

Description copied from class: HtmlBasedComponent

Return vertical flex hint of this component.

Default: null

Overrides:

getVflex in class HtmlBasedComponent

Returns:

vertical flex hint of this component.

See Also:

HtmlBasedComponent.setVflex(java.lang.String)

setHflex

public void setHflex(java.lang.String flex)

This method is unsupported. Please use Panel.setHflex(String) instead.

Overrides:

setHflex in class HtmlBasedComponent

Parameters:

flex - horizontal flex hint of this component.

Since:

6.0.0

See Also:

HtmlBasedComponent.setVflex(java.lang.String), HtmlBasedComponent.getHflex()

setVflex

public void setVflex(java.lang.String flex)

This method is unsupported. Please use Panel.setVflex(String) instead.

Overrides:

setVflex in class HtmlBasedComponent

Parameters:

flex - the vertical flex hint.

Since:

6.0.0

See Also:

HtmlBasedComponent.setHflex(java.lang.String), HtmlBasedComponent.getVflex()

smartUpdate

protected void smartUpdate(java.lang.String attr,
                           java.lang.Object value)

Description copied from class: AbstractComponent

Smart-updates a property of the peer widget associated with the component, running at the client, with the given value.

The second invocation with the same property will replace the previous call. In other words, the same property will be set only once in each execution. If you prefer to send both updates to the client, use AbstractComponent.smartUpdate(String, Object, boolean) instead.

This method has no effect if AbstractComponent.invalidate() is ever invoked (in the same execution), since AbstractComponent.invalidate() assumes the whole content shall be redrawn and all smart updates to this components can be ignored,

Once AbstractComponent.invalidate() is called, all invocations to AbstractComponent.smartUpdate(String, Object) will then be ignored, and AbstractComponent.redraw(java.io.Writer) will be invoked later.

It can be called only in the request-processing and event-processing phases; excluding the redrawing phase.

There are two ways to draw a component, one is to invoke Component.invalidate(), and the other is AbstractComponent.smartUpdate(String, Object). While Component.invalidate() causes the whole content to redraw, AbstractComponent.smartUpdate(String, Object) let component developer control which part to redraw.

Overrides:

smartUpdate in class AbstractComponent

value - the new value. If it is DeferredValue, the value will be retrieved (by calling DeferredValue.getValue()) in the rendering phase. It is useful if the value can not be determined now.

For some old application servers (example, Webshpere 5.1), Execution.encodeURL(java.lang.String) cannot be called in the event processing thread. So, the developers have to use DeferredValue or disable the use of the event processing thread (by use of disable-event-thread in zk.xml).

If you want to generate the JavaScript code directly (i.e., the value is a valid JavaScript snippet), you can use JavaScriptValue. Notice that the JavaScript code will be evaluated before assigning it to the widget.

If the value is a Date object, a special pattern will be generated (aka., marshaling) to ensure it can be unmarshalled back correctly at the client. Notice that it is marshalled to a string based on TimeZones.getCurrent(), and then unmarshalled back at the client. In other words, if the client is in different time-zone, the value returned by getTime() might be different. However, the value will remain the same if the client marshalled the Date object back. In other words, it assumes the browser's time zone from enduser's perspective (not really browser's setting) shall be the same as TimeZones.getCurrent().

If the value is a component, a special pattern will be generated to ensure it can be unmarshalled back correctly at the client.

In addition, the value can be any kind of objects that the client accepts (marshaled by JSON) (see also JSONAware).

See Also:

AbstractComponent.updateByClient(java.lang.String, java.lang.Object), AbstractComponent.smartUpdate(String, Object, boolean)

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 XulElement

Throws:

java.io.IOException

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 HtmlBasedComponent

See Also:

HtmlBasedComponent.getSclass()