Set JSF Command Button Disabled

Hello,
I have a JSF command button, I would like to dynamically change button disabled based on certain condition.
I tried in the actionListener code in my managedbean
like
UIComponent component = event.getComponent();
component.setRendered(false);However it makes button not visible, couldn't find setDisabled.
How can I do this?
Regards

Hi,
Basically, you can change the button status: enabled/didasled from JavaScript by changing the button css.
You can also do this from JSF.
The commandButton element has the disabled attribute and you can change the status depending on your condition.
-- <h:commanButton disabled=""
Please find an example: http://www.roseindia.net/jsf/EnableDisableButton.shtml
If you use AJAX (ex. a4j) there is the same principle. In backing bean you can check your condition and in jsp you'll change to disabled.
Hope this helps,
Sergiu

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      at javax.faces.component.UIComponent.encodeAll(UIComponent.java:1786)
      at org.apache.myfaces.trinidad.render.CoreRenderer.encodeChild(CoreRenderer.java:624)
      at oracle.adfinternal.view.faces.renderkit.rich.PanelGroupLayoutRenderer._encodeChild(PanelGroupLayoutRenderer.java:455)
      at oracle.adfinternal.view.faces.renderkit.rich.PanelGroupLayoutRenderer.access$1600(PanelGroupLayoutRenderer.java:30)
      at oracle.adfinternal.view.faces.renderkit.rich.PanelGroupLayoutRenderer$EncoderCallback.processComponent(PanelGroupLayoutRenderer.java:761)
      at oracle.adfinternal.view.faces.renderkit.rich.PanelGroupLayoutRenderer$EncoderCallback.processComponent(PanelGroupLayoutRenderer.java:653)
      at org.apache.myfaces.trinidad.component.UIXComponent.processFlattenedChildren(UIXComponent.java:195)
      at org.apache.myfaces.trinidad.component.UIXComponent.processFlattenedChildren(UIXComponent.java:326)
      at oracle.adfinternal.view.faces.taglib.region.IncludeTag$FacetWrapper.processFlattenedChildren(IncludeTag.java:683)
      at org.apache.myfaces.trinidad.component.UIXComponent.processFlattenedChildren(UIXComponent.java:171)
      at org.apache.myfaces.trinidad.component.UIXComponent.processFlattenedChildren(UIXComponent.java:326)
      at org.apache.myfaces.trinidad.component.UIXComponent.encodeFlattenedChildren(UIXComponent.java:291)
      at oracle.adfinternal.view.faces.renderkit.rich.PanelGroupLayoutRenderer.encodeAll(PanelGroupLayoutRenderer.java:366)
      at oracle.adf.view.rich.render.RichRenderer.encodeAll(RichRenderer.java:1578)
      at org.apache.myfaces.trinidad.render.CoreRenderer.encodeEnd(CoreRenderer.java:511)
      at org.apache.myfaces.trinidad.component.UIXComponentBase.encodeEnd(UIXComponentBase.java:1085)
      at javax.faces.component.UIComponent.encodeAll(UIComponent.java:1786)
      at org.apache.myfaces.trinidad.render.CoreRenderer.encodeChild(CoreRenderer.java:624)
      at org.apache.myfaces.trinidad.render.CoreRenderer.encodeAllChildren(CoreRenderer.java:641)
      at oracle.adf.view.rich.render.RichRenderer.encodeAllChildrenInContext(RichRenderer.java:3195)
      at oracle.adfinternal.view.faces.renderkit.rich.PageTemplateRenderer.encodeAll(PageTemplateRenderer.java:68)
      at oracle.adf.view.rich.render.RichRenderer.encodeAll(RichRenderer.java:1578)
      at org.apache.myfaces.trinidad.render.CoreRenderer.encodeEnd(CoreRenderer.java:511)
      at org.apache.myfaces.trinidad.component.UIXComponentBase.encodeEnd(UIXComponentBase.java:1085)
      at javax.faces.component.UIComponent.encodeAll(UIComponent.java:1786)
      at org.apache.myfaces.trinidad.render.CoreRenderer.encodeChild(CoreRenderer.java:624)
      at org.apache.myfaces.trinidad.render.CoreRenderer.encodeAllChildren(CoreRenderer.java:641)
      at oracle.adf.view.rich.render.RichRenderer.encodeAllChildrenInContext(RichRenderer.java:3195)
      at oracle.adfinternal.view.faces.renderkit.rich.RegionRenderer._encodeChildren(RegionRenderer.java:417)
      at oracle.adfinternal.view.faces.renderkit.rich.RegionRenderer.encodeAll(RegionRenderer.java:228)
      at oracle.adf.view.rich.render.RichRenderer.encodeAll(RichRenderer.java:1578)
      at org.apache.myfaces.trinidad.render.CoreRenderer.encodeEnd(CoreRenderer.java:511)
      at org.apache.myfaces.trinidad.component.UIXComponentBase.encodeEnd(UIXComponentBase.java:1085)
      at oracle.adf.view.rich.component.fragment.UIXRegion.encodeEnd(UIXRegion.java:288)
      at javax.faces.component.UIComponent.encodeAll(UIComponent.java:1786)
      at org.apache.myfaces.trinidad.render.CoreRenderer.encodeChild(CoreRenderer.java:624)
      at org.apache.myfaces.trinidad.render.CoreRenderer.encodeAllChildren(CoreRenderer.java:641)
      at oracle.adf.view.rich.render.RichRenderer.encodeAllChildrenInContext(RichRenderer.java:3195)
      at oracle.adfinternal.view.faces.renderkit.rich.FormRenderer.encodeAll(FormRenderer.java:275)
      at oracle.adf.view.rich.render.RichRenderer.encodeAll(RichRenderer.java:1578)
      at org.apache.myfaces.trinidad.render.CoreRenderer.encodeEnd(CoreRenderer.java:511)
      at org.apache.myfaces.trinidad.component.UIXComponentBase.encodeEnd(UIXComponentBase.java:1085)
      at javax.faces.component.UIComponent.encodeAll(UIComponent.java:1786)
      at org.apache.myfaces.trinidad.render.CoreRenderer.encodeChild(CoreRenderer.java:624)
      at org.apache.myfaces.trinidad.render.CoreRenderer.encodeAllChildren(CoreRenderer.java:641)
      at oracle.adf.view.rich.render.RichRenderer.encodeAllChildrenInContext(RichRenderer.java:3195)
      at oracle.adfinternal.view.faces.renderkit.rich.DocumentRenderer.encodeAll(DocumentRenderer.java:1473)
      at oracle.adf.view.rich.render.RichRenderer.encodeAll(RichRenderer.java:1578)
      at org.apache.myfaces.trinidad.render.CoreRenderer.encodeEnd(CoreRenderer.java:511)
      at org.apache.myfaces.trinidad.component.UIXComponentBase.encodeEnd(UIXComponentBase.java:1085)
      at javax.faces.component.UIComponent.encodeAll(UIComponent.java:1786)
      at javax.faces.component.UIComponent.encodeAll(UIComponent.java:1782)
      at oracle.adfinternal.view.faces.component.AdfViewRoot.encodeAll(AdfViewRoot.java:102)
      at com.sun.faces.application.view.FaceletViewHandlingStrategy.renderView(FaceletViewHandlingStrategy.java:402)
      at org.apache.myfaces.trinidad.view.ViewDeclarationLanguageWrapper.renderView(ViewDeclarationLanguageWrapper.java:101)
      at org.apache.myfaces.trinidad.view.ViewDeclarationLanguageWrapper.renderView(ViewDeclarationLanguageWrapper.java:101)
      at org.apache.myfaces.trinidadinternal.application.ViewDeclarationLanguageFactoryImpl$ChangeApplyingVDLWrapper.renderView(ViewDeclarationLanguageFactoryImpl.java:338)
      at com.sun.faces.application.view.MultiViewHandler.renderView(MultiViewHandler.java:125)
      at javax.faces.application.ViewHandlerWrapper.renderView(ViewHandlerWrapper.java:288)
      at org.apache.myfaces.trinidadinternal.application.ViewHandlerImpl.renderView(ViewHandlerImpl.java:170)
      at oracle.adfinternal.view.faces.lifecycle.ResponseRenderManager.runRenderView(ResponseRenderManager.java:52)
      at oracle.adfinternal.view.faces.lifecycle.LifecycleImpl._renderResponse(LifecycleImpl.java:1104)
      at oracle.adfinternal.view.faces.lifecycle.LifecycleImpl._executePhase(LifecycleImpl.java:389)
      at oracle.adfinternal.view.faces.lifecycle.LifecycleImpl.render(LifecycleImpl.java:255)
      at javax.faces.webapp.FacesServlet.service(FacesServlet.java:594)
      at weblogic.servlet.internal.StubSecurityHelper$ServletServiceAction.run(StubSecurityHelper.java:280)
      at weblogic.servlet.internal.StubSecurityHelper$ServletServiceAction.run(StubSecurityHelper.java:254)
      at weblogic.servlet.internal.StubSecurityHelper.invokeServlet(StubSecurityHelper.java:136)
      at weblogic.servlet.internal.ServletStubImpl.execute(ServletStubImpl.java:341)
      at weblogic.servlet.internal.TailFilter.doFilter(TailFilter.java:25)
      at weblogic.servlet.internal.FilterChainImpl.doFilter(FilterChainImpl.java:79)
      at oracle.adf.model.servlet.ADFBindingFilter.doFilter(ADFBindingFilter.java:192)
      at weblogic.servlet.internal.FilterChainImpl.doFilter(FilterChainImpl.java:79)
      at oracle.adfinternal.view.faces.webapp.rich.RegistrationFilter.doFilter(RegistrationFilter.java:106)
      at org.apache.myfaces.trinidadinternal.webapp.TrinidadFilterImpl$FilterListChain.doFilter(TrinidadFilterImpl.java:478)
      at oracle.adfinternal.view.faces.activedata.AdsFilter.doFilter(AdsFilter.java:60)
      at org.apache.myfaces.trinidadinternal.webapp.TrinidadFilterImpl$FilterListChain.doFilter(TrinidadFilterImpl.java:478)
      at org.apache.myfaces.trinidadinternal.webapp.TrinidadFilterImpl._doFilterImpl(TrinidadFilterImpl.java:303)
      at org.apache.myfaces.trinidadinternal.webapp.TrinidadFilterImpl.doFilter(TrinidadFilterImpl.java:208)
      at org.apache.myfaces.trinidad.webapp.TrinidadFilter.doFilter(TrinidadFilter.java:92)
      at weblogic.servlet.internal.FilterChainImpl.doFilter(FilterChainImpl.java:79)
      at oracle.security.jps.ee.http.JpsAbsFilter$1.run(JpsAbsFilter.java:137)
      at java.security.AccessController.doPrivileged(Native Method)
      at oracle.security.jps.util.JpsSubject.doAsPrivileged(JpsSubject.java:315)
      at oracle.security.jps.ee.util.JpsPlatformUtil.runJaasMode(JpsPlatformUtil.java:460)
      at oracle.security.jps.ee.http.JpsAbsFilter.runJaasMode(JpsAbsFilter.java:120)
      at oracle.security.jps.ee.http.JpsAbsFilter.doFilter(JpsAbsFilter.java:217)
      at oracle.security.jps.ee.http.JpsFilter.doFilter(JpsFilter.java:81)
      at weblogic.servlet.internal.FilterChainImpl.doFilter(FilterChainImpl.java:79)
      at oracle.dms.servlet.DMSServletFilter.doFilter(DMSServletFilter.java:225)
      at weblogic.servlet.internal.FilterChainImpl.doFilter(FilterChainImpl.java:79)
      at weblogic.servlet.internal.RequestEventsFilter.doFilter(RequestEventsFilter.java:27)
      at weblogic.servlet.internal.FilterChainImpl.doFilter(FilterChainImpl.java:79)
      at weblogic.servlet.internal.WebAppServletContext$ServletInvocationAction.wrapRun(WebAppServletContext.java:3367)
      at weblogic.servlet.internal.WebAppServletContext$ServletInvocationAction.run(WebAppServletContext.java:3333)
      at weblogic.security.acl.internal.AuthenticatedSubject.doAs(AuthenticatedSubject.java:321)
      at weblogic.security.service.SecurityManager.runAs(SecurityManager.java:120)
      at weblogic.servlet.provider.WlsSubjectHandle.run(WlsSubjectHandle.java:57)
      at weblogic.servlet.internal.WebAppServletContext.doSecuredExecute(WebAppServletContext.java:2220)
      at weblogic.servlet.internal.WebAppServletContext.securedExecute(WebAppServletContext.java:2146)
      at weblogic.servlet.internal.WebAppServletContext.execute(WebAppServletContext.java:2124)
      at weblogic.servlet.internal.ServletRequestImpl.run(ServletRequestImpl.java:1564)
      at weblogic.servlet.provider.ContainerSupportProviderImpl$WlsRequestExecutor.run(ContainerSupportProviderImpl.java:254)
      at weblogic.work.ExecuteThread.execute(ExecuteThread.java:295)
      at weblogic.work.ExecuteThread.run(ExecuteThread.java:254)
    >
    <Jan 22, 2014 11:36:15 AM CST> <Error> <javax.enterprise.resource.webcontainer.jsf.application> <BEA-000000> <Error Rendering View[/studyBrowse]
    javax.el.PropertyNotFoundException: //C:/Documents and Settings/rade/Application Data/JDeveloper/system12.1.2.0.40.66.68/o.j2ee/drs/ADFOracleReports/ViewControllerWebApp.war/studyBrowse.jsff @41,46 disabled="#{backingBeanScope.Studybrowse.isUserAuthorized}": The class 'view.backing.Studybrowse' does not have the property 'isUserAuthorized'.
      at com.sun.faces.facelets.el.TagValueExpression.getValue(TagValueExpression.java:111)
      at org.apache.myfaces.trinidad.bean.FacesBeanImpl.getProperty(FacesBeanImpl.java:73)
      at oracle.adfinternal.view.faces.renderkit.rich.ButtonRenderer.getDisabled(ButtonRenderer.java:436)
      at oracle.adfinternal.view.faces.renderkit.rich.ButtonRenderer.encodeAll(ButtonRenderer.java:270)
      at oracle.adf.view.rich.render.RichRenderer.encodeAll(RichRenderer.java:1578)
      Truncated. see log file for complete stacktrace
    >

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