Package org.zkoss.zkex.zul

## Class Columnlayout

- java.lang.Object
- - org.zkoss.zk.ui.AbstractComponent
  - - org.zkoss.zk.ui.HtmlBasedComponent
    - - org.zkoss.zul.impl.XulElement
      - - org.zkoss.zkex.zul.Columnlayout

- All Implemented Interfaces:
    `java.io.Serializable`, `java.lang.Cloneable`, `Component`, `Scope`, `ComponentCtrl`

      public class Columnlayout
      extends XulElement

  A columnlayout lays out a container which can have multiple columns, and each column may contain one or more component.
  Use Columnlayout need assign width (either present or pixel) on every Columnchildren, or we cannot make sure about layout look.

  Available in ZK PE and ZK EE.

  Default `getZclass()`: z-columnlayout.

  Since:
    3.5.0
  Author:
    gracelin
  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_CLONED, 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
    --- | ---
    `Columnlayout()` |

  - ### Method Summary

    All Methods Instance Methods Concrete Methods
    Modifier and Type | Method | Description
    --- | --- | ---
    `void` | `beforeChildAdded​(Component child, Component refChild)` | Default: does nothing.
    `java.lang.String` | `getZclass()` | Returns the ZK Cascading Style class for this component.
    `protected void` | `renderProperties​(ContentRenderer renderer)` | Renders the content of this component, excluding the enclosing tags and children.

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

      `clone, getContext, getCtrlKeys, getPopup, getPropertyAccess, getTooltip, 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, setHflex, setHflex0, setHflexDirectly, setLeft, setLeftDirectly, setRenderdefer, setSclass, setStyle, setTabindex, setTabindex, setTooltiptext, setTop, setTopDirectly, setVflex, setVflex0, setVflexDirectly, setWidth, 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, beforeParentChanged, 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, 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

    - #### Columnlayout

          public Columnlayout()

  - ### Method Detail

    - #### 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)`

    - #### 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()`

    - #### 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`