Package org.zkoss.zul

Class Treerow

java.lang.Object

org.zkoss.zk.ui.AbstractComponent

org.zkoss.zk.ui.HtmlBasedComponent

org.zkoss.zul.impl.XulElement

org.zkoss.zul.Treerow

All Implemented Interfaces:

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

public class Treerow
extends XulElement

A treerow.

Default getZclass(): z-treerow (since 5.0.0)

Author:

tomyeh

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, AbstractComponent.ForwardInfo, AbstractComponent.TargetInfo

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

AFTER_CHILD_ADDED, AFTER_CHILD_REMOVED, AFTER_PAGE_ATTACHED, AFTER_PAGE_DETACHED, AFTER_PARENT_CHANGED, CE_BUSY_IGNORE, CE_DUPLICATE_IGNORE, CE_IMPORTANT, CE_NON_DEFERRABLE, CE_REPEAT_IGNORE

Constructor Summary

Constructors

Constructor	Description
Treerow()
Treerow(java.lang.String label)	Instantiates a treerow with a treecel holding the given label.

Method Summary

Modifier and Type	Method	Description
void	beforeChildAdded(Component child, Component refChild)	Default: does nothing.
void	beforeParentChanged(Component parent)	Default: If parent is null, execute the @Destroy method if any.
java.lang.String	getImage()	Returns the image of the Treecell it contains, or null if no such cell.
java.lang.String	getLabel()	Returns the label of the first Treecell it contains, or null if no such cell.
int	getLevel()	Returns the level this cell is.
Treechildren	getLinkedTreechildren()	Returns the Treechildren associated with this Treerow.
Tree	getTree()	Returns the Tree instance containing this element.
java.lang.String	getZclass()	Returns the ZK Cascading Style class for this component.
void	setHflex(java.lang.String flex)	Deprecated. as of release 6.0.0.
void	setImage(java.lang.String image)	Sets the image of the Treecell it contains.
void	setLabel(java.lang.String label)	Sets the label of the first Treecell it contains.
void	setWidth(java.lang.String width)	Deprecated. as of release 6.0.0.
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, getPropertyAccess, getTooltip, renderProperties, setContext, setContext, setContextAttributes, setCtrlKeys, setPopup, setPopup, setPopupAttributes, setTooltip, setTooltip, setTooltipAttributes

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

addSclass, evalCSSFlex, focus, getAction, getClientAction, getDraggable, getDroppable, getExtraCtrl, getHeight, getHflex, getLeft, getRenderdefer, getSclass, getStyle, getTabindex, getTabindexInteger, getTooltiptext, getTop, getVflex, getWidth, getZindex, getZIndex, removeSclass, removeSclass, service, setAction, setClass, setClientAction, setDraggable, setDroppable, setFocus, setHeight, setHeight0, setHeightDirectly, setHflex0, setHflexDirectly, setLeft, setLeftDirectly, setRenderdefer, setSclass, setStyle, setTabindex, setTabindex, setTooltiptext, setTop, setTopDirectly, setVflex, setVflex0, setVflexDirectly, setWidth0, setWidthDirectly, setZclass, setZindex, setZIndex, setZIndexDirectly

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

addAnnotation, addCallback, addClientEvent, addEventHandler, addEventListener, addEventListener, addForward, addForward, addForward, addForward, addMoved, addRedrawCallback, addScopeListener, addShadowRoot, addShadowRootBefore, addSharedEventHandlerMap, appendChild, applyProperties, beforeChildRemoved, destroyIndexCacheMap, detach, didActivate, didActivate, didDeserialize, didDeserialize, disableBindingAnnotation, disableClientUpdate, disableHostChanged, enableBindingAnnotation, enableHostChanged, getAnnotatedProperties, getAnnotatedPropertiesBy, getAnnotation, 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, getForwards, getId, getIndexCacheMap, getLastChild, getMold, getNextSibling, getPage, getParent, getPreviousSibling, getRedrawCallback, getRoot, getShadowFellowIfAny, getShadowRoots, getShadowVariable, getShadowVariable, getShadowVariable0, getSpaceOwner, getSpecialRendererOutput, getStubonly, getSubBindingAnnotationCount, getTemplate, getTemplateNames, getUuid, getWidgetAttributeNames, getWidgetClass, getWidgetListener, getWidgetListenerNames, getWidgetOverride, getWidgetOverrideNames, hasAttribute, hasAttribute, hasAttribute, hasAttributeOrFellow, hasBindingAnnotation, hasFellow, hasFellow, hasSubBindingAnnotation, initIndexCacheMap, insertBefore, invalidate, isChildable, isDisabledHostChanged, isInitialized, isInvalidated, isListenerAvailable, isVisible, onChildAdded, onChildRemoved, onPageAttached, onPageDetached, onParentChanged, onWrongValue, query, queryAll, redraw, redrawChildren, removeAttribute, removeAttribute, removeAttribute, removeCallback, removeChild, removeEventListener, removeForward, removeForward, removeRedrawCallback, removeScopeListener, removeShadowRoot, render, render, render, renderPropertiesOnly, replace, response, response, response, service, sessionDidActivate, sessionWillPassivate, setAttribute, setAttribute, setAttribute, setAuService, setAutag, setClientAttribute, setClientDataAttribute, setDefinition, setDefinition, setId, setMold, setPage, setPageBefore, setParent, setStubonly, setStubonly, setSubBindingAnnotationCount, setTemplate, setVisible, setVisibleDirectly, setWidgetClass, setWidgetListener, setWidgetOverride, 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

Constructor Detail

Treerow

public Treerow()

Treerow

public Treerow(java.lang.String label)

Instantiates a treerow with a treecel holding the given label.

Since:

5.0.8

Method Detail

getTree

public Tree getTree()

Returns the Tree instance containing this element.

getLevel

public int getLevel()

Returns the level this cell is. The root is level 0.

getLinkedTreechildren

public Treechildren getLinkedTreechildren()

Returns the Treechildren associated with this Treerow. In other words, it is Treeitem.getTreechildren() of AbstractComponent.getParent().

Since:

2.4.1

See Also:

Treechildren.getLinkedTreerow()

getLabel

public java.lang.String getLabel()

Returns the label of the first Treecell it contains, or null if no such cell.

Since:

5.0.8

setLabel

public void setLabel(java.lang.String label)

Sets the label of the first Treecell it contains.

If treecell are not created, we automatically create it.

Notice that this method will create a treecell automatically if they don't exist.

Since:

5.0.8

getImage

public java.lang.String getImage()

Returns the image of the Treecell it contains, or null if no such cell.

Since:

5.0.8

setImage

public void setImage(java.lang.String image)

Sets the image of the Treecell it contains.

If treecell are not created, we automatically create it.

Notice that this method will create a treerow and treecell automatically if they don't exist.

Since:

5.0.8

setWidth

public void setWidth(java.lang.String width)

Deprecated.

as of release 6.0.0. To control the size of Tree related components, please refer to Tree and Treecol instead.

Description copied from class: HtmlBasedComponent

Sets the width. If null, the best fit is used.

Overrides:

setWidth in class HtmlBasedComponent

See Also:

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

setHflex

public void setHflex(java.lang.String flex)

Deprecated.

as of release 6.0.0. To control the size of Tree related components, please refer to Tree and Treecol instead.

Description copied from class: HtmlBasedComponent

Sets horizontal flex hint of this component.

Number flex indicates how this component's container distributes remaining empty space among its children horizontally. Flexible component grow and shrink to fit their given space. Flexible components with larger flex values will be made larger than components with lower flex values, at the ratio determined by all flexible components. The actual flex value is not relevant unless there are other flexible components within the same container. Once the default sizes of components in a container are calculated, the remaining space in the container is divided among the flexible components, according to their flex ratios.

Specify a flex value of negative value, 0, or "false" has the same effect as leaving the flex attribute out entirely. Specify a flex value of "true" has the same effect as a flex value of 1.

Special flex hint, "min", indicates that the minimum space shall be given to this flexible component to enclose all of its children components. That is, the flexible component grow and shrink to fit its children components.

Overrides:

setHflex in class HtmlBasedComponent

Parameters:

flex - horizontal flex hint of this component.

See Also:

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

getZclass

public java.lang.String getZclass()

Description copied from class: HtmlBasedComponent

Returns the ZK Cascading Style class 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 HtmlBasedComponent

See Also:

HtmlBasedComponent.getSclass()

smartUpdate

public 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, Websphere 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 (a.k.a., 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)

beforeParentChanged

public void beforeParentChanged(Component parent)

Description copied from class: AbstractComponent

Default: If parent is null, execute the @Destroy method if any.

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)

beforeChildAdded

public void beforeChildAdded(Component child,
                             Component refChild)

Description copied from class: AbstractComponent

Default: does nothing.

Specified by:

beforeChildAdded in interface ComponentCtrl

Overrides:

beforeChildAdded in class AbstractComponent

Parameters:

child - 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)