org.zkoss.zhtml
Class Body

java.lang.Object
  org.zkoss.zk.ui.AbstractComponent
      org.zkoss.zhtml.impl.AbstractTag
          org.zkoss.zhtml.Body

All Implemented Interfaces:

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

public class Body
extends AbstractTag

The BODY tag.

Author:

tomyeh

See Also:

Serialized Form

Nested Class Summary

Nested classes/interfaces inherited from class org.zkoss.zhtml.impl.AbstractTag

AbstractTag.ExtraCtrl

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

AbstractComponent.Children

Field Summary

Fields inherited from class org.zkoss.zhtml.impl.AbstractTag

_tagnm

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

Body()

Method Summary

void	beforeParentChanged(Component parent) Default: does nothing.
void	invalidate() Invalidates this component by setting the dirty flag such that it will be redraw the whole content of this component and its dependences later.
void	redraw(java.io.Writer out) Redraws this component and all its descendants.

Methods inherited from class org.zkoss.zhtml.impl.AbstractTag

clone, getDynamicProperty, getExtraCtrl, getSclass, getStyle, getTag, getWidgetClass, hasDynamicProperty, isChildable, isOrphanTag, redrawChildrenDirectly, renderProperties, setDynamicProperty, setSclass, setStyle, setVisible, shallHideId, toString

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, getWidgetListener, getWidgetListenerNames, getWidgetOverride, getWidgetOverrideNames, hasAttribute, hasAttribute, hasAttribute, hasAttributeOrFellow, hasFellow, hasFellow, insertBefore, isInvalidated, isListenerAvailable, isVisible, onChildAdded, onChildRemoved, onPageAttached, onPageDetached, onWrongValue, query, queryAll, redrawChildren, removeAttribute, removeAttribute, removeAttribute, removeChild, removeEventListener, removeForward, removeForward, removeScopeListener, render, render, render, replace, response, response, response, service, service, sessionDidActivate, sessionWillPassivate, setAttribute, setAttribute, setAttribute, setAuService, setAutag, setDefinition, setDefinition, setId, setMold, setPage, setPageBefore, setParent, setStubonly, setStubonly, setTemplate, setVisibleDirectly, setWidgetAttribute, setWidgetClass, setWidgetListener, setWidgetOverride, smartUpdate, smartUpdate, smartUpdate, smartUpdate, smartUpdate, smartUpdate, smartUpdate, smartUpdate, smartUpdate, smartUpdateWidgetListener, smartUpdateWidgetOverride, updateByClient, willPassivate, willPassivate, willSerialize, willSerialize

Methods inherited from class java.lang.Object

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

Constructor Detail

Body

public Body()

Method Detail

invalidate

public void invalidate()

Description copied from interface: Component

Invalidates this component by setting the dirty flag such that it will be redraw the whole content of this component and its dependences later. And, the widget associated with this component and all its descendant at the client will be deleted and recreated, too.

If the application is totally controlled by the server side (i.e., you don't write client codes), you rarely need to access this method.

It can be called only in the request-processing and event-processing phases. However, it is NOT allowed in the rendering phase.

Specified by:

invalidate in interface Component

Overrides:

invalidate in class AbstractComponent

redraw

public void redraw(java.io.Writer out)
            throws java.io.IOException

Description copied from class: AbstractComponent

Redraws this component and all its descendants.

Default: It uses JsContentRenderer to render all information in JavaScript codes. For devices that don't support JavaScript, it must override this method.

To generate all information, it first invokes AbstractComponent.renderProperties(org.zkoss.zk.ui.sys.ContentRenderer) to render component's properties, and then AbstractComponent.redrawChildren(java.io.Writer) to redraw children (and descendants) (by calling their AbstractComponent.redraw(java.io.Writer)).

If a derived class wants to render more properties, it can override AbstractComponent.renderProperties(org.zkoss.zk.ui.sys.ContentRenderer).

If a derived class renders only a subset of its children (such as paging/cropping), it could override AbstractComponent.redrawChildren(java.io.Writer).

If a deriving class wants to do something before AbstractComponent.renderProperties(org.zkoss.zk.ui.sys.ContentRenderer), it has to override AbstractComponent.redraw(java.io.Writer).

If a deriving class doesn't want to render in JavaScript codes, it has to override AbstractComponent.redraw(java.io.Writer) with the proper implementation of ContentRenderer.

Specified by:

redraw in interface ComponentCtrl

Overrides:

redraw in class AbstractTag

Throws:

java.io.IOException

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)