org.zkoss.zul
Class Frozen

java.lang.Object
  extended by org.zkoss.zk.ui.AbstractComponent
      extended by org.zkoss.zk.ui.HtmlBasedComponent
          extended by org.zkoss.zul.impl.XulElement
              extended by org.zkoss.zul.Frozen
All Implemented Interfaces:
java.io.Serializable, java.lang.Cloneable, Component, Scope, ComponentCtrl

public class Frozen
extends XulElement

A frozen component to represent a frozen column or row in grid, like MS Excel.

Default getZclass(): z-frozen.

Since:
5.0.0
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
Frozen()
           
 
Method Summary
 int getColumns()
          Returns the number of columns to freeze.
 int getRows()
          Returns the number of rows to freeze.
 int getStart()
          Returns the start position of the scrollbar.
 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 setColumns(int columns)
          Sets the number of columns to freeze.
 void setRows(int rows)
          Sets the number of rows to freeze.
 void setStart(int start)
          Sets the start position of the scrollbar.
protected  void updateByClient(java.lang.String name, java.lang.Object value)
          Called when the widget running at the client asks the server to update a 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, getHflex, getLeft, getRenderdefer, getSclass, getStyle, getTooltiptext, getTop, getVflex, getWidth, getZindex, getZIndex, service, setAction, setClass, setDraggable, setDroppable, setFocus, setHeight, setHeightDirectly, setHflex, setHflexDirectly, setLeft, setLeftDirectly, setRenderdefer, setSclass, setStyle, setTooltiptext, setTop, setTopDirectly, setVflex, setWidth, 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, beforeParentChanged, 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, smartUpdate, smartUpdateWidgetListener, smartUpdateWidgetOverride, toString, willPassivate, willPassivate, willSerialize, willSerialize
 
Methods inherited from class java.lang.Object
finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait
 

Constructor Detail

Frozen

public Frozen()
Method Detail

setStart

public void setStart(int start)
Sets the start position of the scrollbar.

Default: 0

Parameters:
start - the column number

getStart

public int getStart()
Returns the start position of the scrollbar.

Default: 0


setColumns

public void setColumns(int columns)
Sets the number of columns to freeze.(from left to right)

Parameters:
columns - positive only

getColumns

public int getColumns()
Returns the number of columns to freeze.

Default: 0


setRows

public void setRows(int rows)
Sets the number of rows to freeze.(from top to bottom)

Note: this feature is reserved and not yet implemented.

Parameters:
rows - positive only

getRows

public int getRows()
Returns the number of rows to freeze.

Default: 0


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()

updateByClient

protected void updateByClient(java.lang.String name,
                              java.lang.Object value)
Description copied from class: AbstractComponent
Called when the widget running at the client asks the server to update a value. The update is caused by an AU request named setAttr (by invoking zk.Widget's smartUpdate at client).

By default, it does nothing but log a warning message, since it is not safe to allow the client to update a field arbitary.

However, if you'd like to allow the update for a particular component you could do one of the following

  1. For component developers: override this method to update the field directly. For example,
    protected void updateByClient(String name, Object value) {
            if ("disabled".equals(name))
                    setDisabled(name, ((Boolean)value).booleanValue());
            else
                    super.updateByClient(name, value);
  2. For application developers: set an attribute called org.zkoss.zk.ui.updateByClient to be true. Then, this method will use reflection to find out the setter to update the value. Nothing happens if the method is not found.
  3. Notice: this method will invoke AbstractComponent.disableClientUpdate(boolean) to disable any update to the client, when calling the setter.

    If you wanto enable the client update for all instances of a given component (though not recommended for the security reason), you could refer to here.

    See also zk.Widget.smartUpdate().

    Overrides:
    updateByClient in class AbstractComponent

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


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