com.ibm.xsp.component
Class UIScriptCollector

java.lang.Object
  javax.faces.component.UIComponent
      javax.faces.component.UIComponentBase
          com.ibm.xsp.component.UIScriptCollector

All Implemented Interfaces:

com.ibm.xsp.ajax.AjaxPartialRefresh, javax.faces.component.StateHolder

public class UIScriptCollector
extends javax.faces.component.UIComponentBase
implements com.ibm.xsp.ajax.AjaxPartialRefresh

UIScriptCollector is a UIComponent that wraps other components on a JSF page. It is automatically inserted into the XPage by the root control. In Internet Explorer if you partial refresh an area where script tag appears before an input control, then the script is not inserted into the page during the refresh. The Script Collector control is used to avoid that issue by aggregating all JavaScript snippets that are output by different controls into one large script tag at the bottom of the page. During a partial refresh, the script tag will only contain scripts from controls that were in the updated area. Not intended to be subclassed.

Nested Class Summary

Nested classes/interfaces inherited from class javax.faces.component.UIComponentBase

javax.faces.component.UIComponentBase.AggregatedIterator, javax.faces.component.UIComponentBase.UnmodifiableIterator

Nested classes/interfaces inherited from class javax.faces.component.UIComponent

javax.faces.component.UIComponent.StateMap, javax.faces.component.UIComponent.StateMapEntry

Field Summary

static java.lang.String	COMPONENT_FAMILY The standard component family for this component.
static java.lang.String	COMPONENT_TYPE The standard component type for this component.

Fields inherited from class javax.faces.component.UIComponentBase

EMPTY_ITERATOR

Fields inherited from class javax.faces.component.UIComponent

_xspStateId

Constructor Summary

UIScriptCollector()
Constructor.

Method Summary

void	addScript(java.lang.String newScript) Adds a new script for the bottom of the script block.
void	addScriptOnce(java.lang.String newScript) Adds a new script for the bottom of the script block, making sure the exact same script wasn't already added.
void	addScriptOnLoad(java.lang.String newScript) Adds a new script that should be executed on load
static UIScriptCollector	find() Find the UIScriptCollector associated with the current page.
java.lang.String	getFamily()
java.util.List<java.lang.String>	getScripts() Returns all collected scripts for the top of the script block.
java.util.List<java.lang.String>	getScriptsOnLoad() Returns all collected scripts the should be executed "onload".
boolean	isInRenderedChain(FacesContextEx context) The component should always be rendered by Ajax requests
boolean	isRendering() This method checks to see if the current request is an Ajax request and whether or not the AjaxFacesContext is set to render.
void	reset() Discards all collected scripts, script contributors and libraries.
void	restoreState(javax.faces.context.FacesContext context, java.lang.Object valueArray)
java.lang.Object	saveState(javax.faces.context.FacesContext context)

Methods inherited from class javax.faces.component.UIComponentBase

_xspCleanTransientData, _xspGetReadOnlyObj, _xspGetRendererData, _xspRemoveReadOnlyObj, _xspRemoveRendererData, _xspSetIdUnchecked, _xspSetReadOnlyObj, _xspSetRendererData, addFacesListener, broadcast, decode, encodeBegin, encodeChildren, encodeEnd, findComponent, getAttributes, getChildCount, getChildren, getClientId, getFacesContext, getFacesListeners, getFacet, getFacetCount, getFacets, getFacetsAndChildren, getId, getParent, getRenderer, getRendererType, getRendersChildren, getValueBinding, isRendered, isTransient, processDecodes, processRestoreState, processSaveState, processUpdates, processValidators, queueEvent, removeFacesListener, restoreAttachedState, saveAttachedState, setId, setParent, setRendered, setRendererType, setTransient, setValueBinding

Methods inherited from class javax.faces.component.UIComponent

_xspGetStateId, _xspGetStateMap, _xspRestoreAttribute, _xspRestoreState, _xspSaveState, invokeOnComponent, isVisitable, markInitialState, setControlState, visitTree

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Detail

COMPONENT_TYPE

public static final java.lang.String COMPONENT_TYPE

The standard component type for this component.

See Also:

Constant Field Values

COMPONENT_FAMILY

public static final java.lang.String COMPONENT_FAMILY

The standard component family for this component.

See Also:

Constant Field Values

Constructor Detail

UIScriptCollector

public UIScriptCollector()

Constructor. Allocates buffers to store scripts, script contributors and libraries.

Method Detail

isInRenderedChain

public boolean isInRenderedChain(FacesContextEx context)

The component should always be rendered by Ajax requests

Specified by:

isInRenderedChain in interface com.ibm.xsp.ajax.AjaxPartialRefresh

addScriptOnce

public void addScriptOnce(java.lang.String newScript)

Adds a new script for the bottom of the script block, making sure the exact same script wasn't already added.

Parameters:

newScript - new script to add

addScript

public void addScript(java.lang.String newScript)

Adds a new script for the bottom of the script block.

Parameters:

newScript - new script to add

addScriptOnLoad

public void addScriptOnLoad(java.lang.String newScript)

Adds a new script that should be executed on load

Parameters:

newScript - new script to add

getFamily

public java.lang.String getFamily()

Specified by:

getFamily in class javax.faces.component.UIComponent

getScripts

public java.util.List<java.lang.String> getScripts()

Returns all collected scripts for the top of the script block. May be null.

Returns:

collected scripts

getScriptsOnLoad

public java.util.List<java.lang.String> getScriptsOnLoad()

Returns all collected scripts the should be executed "onload". May be null.

Returns:

collected scripts

reset

public void reset()

Discards all collected scripts, script contributors and libraries. Resets buffers to zero length.

find

public static UIScriptCollector find()

Find the UIScriptCollector associated with the current page. This depends on FacesContext.getCurrentInstance().

Returns:

UIScriptCollector that was found.

saveState

public java.lang.Object saveState(javax.faces.context.FacesContext context)

Specified by:

saveState in interface javax.faces.component.StateHolder

Overrides:

saveState in class javax.faces.component.UIComponentBase

restoreState

public void restoreState(javax.faces.context.FacesContext context,
                         java.lang.Object valueArray)

Specified by:

restoreState in interface javax.faces.component.StateHolder

Overrides:

restoreState in class javax.faces.component.UIComponentBase

isRendering

public boolean isRendering()

This method checks to see if the current request is an Ajax request and whether or not the AjaxFacesContext is set to render. If the AjaxFacesContext has rendering set to true then the component that is being process at that time will be rendered to the page. If the component is being re-rendered to the page then so too must its javaScript. So this indicates whether or not the scriptCollector should add the script for the current component.

Returns:

boolean whether or not to add script blocks to the page