Handle standard JSF expressions in actions

ActionContext class depending on jexl was changed into an interface. A basic ELActionContext implementation with a set of default resolvers is now available for action filter resolution outside of a JSF/Seam context, another JSFActionContext implementation is also available inside a JSF/Seam context. Both need an ELContext and ExpressionFactory implementations, provided by the caller. Also the reference EL API is now org.apache.tomcat/tomcat-el-api instead of javax.el/el-api and the reference EL implementation is now org.jboss.el/jboss-el instead of others (commons-el, juel-impl, etc...) as jboss-el is the more expressive implementation. Sample JSF/Seam usage: public ActionContext createActionContext() { FacesContext faces = FacesContext.getCurrentInstance(); if (faces == null ) { throw new IllegalArgumentException( "Faces context is null " ); } ActionContext ctx = new JSFActionContext(faces.getELContext(), faces.getApplication().getExpressionFactory()); ctx.setCurrentDocument(navigationContext.getCurrentDocument()); ctx.setDocumentManager(documentManager); ctx.setCurrentPrincipal(currentNuxeoPrincipal); ctx.putLocalVariable( "SeamContext" , new SeamContextHelper()); return ctx; } Alternative sample JSF/Seam usage: <nxu:set var = "actionContext" value= "#{actionContextProvider.createActionContext()}" cache= " true " > <nxu:set var = "foo" value= "#{actionContext.putLocalVariable( 'contentView' , contentView)}" cache= " true " /> <nxu:set var = "foo" value= "#{actionContext.putLocalVariable( 'selectedDocuments' , documentsListsManager.getWorkingList(contentView.selectionListName))}" cache= " true " /> <nxu:set var = "actions" value= "#{webActions.getUnfiltredActionsList(actionCategory, actionContext)}" cache= " true " > <c: if test= "#{not status.first and not empty actions}" > <br /> </c: if > <nxl:widgetType name= "actions" mode= "#{widget.mode}" widgetName= "cvButton" label="" actions= "#{actions}" overallDisplay= "horizontal_block" actionsDisplay= "buttons" ignoreTemplateProperty= " true " addForm= " true " /> </nxu:set> </nxu:set> Sample EL usage: protected ActionContext getActionContext(DocumentModel currentDocument) throws Exception { ActionContext actionContext = new ELActionContext( new ExpressionContext(), new ExpressionFactoryImpl()); actionContext.setDocumentManager(session); actionContext.setCurrentPrincipal((NuxeoPrincipal) session.getPrincipal()); if (currentDocument != null ) { actionContext.setCurrentDocument(currentDocument); } else { actionContext.setCurrentDocument(getCurrentDocumentFromContext()); } actionContext.putAllLocalVariables(ctx); return actionContext; }