Is this class something that MyFaces should provide and its not? http://wiki.apache.org/myfaces/Use_Facelets_with_Tomahawk says <quote> If the Tag class does anything other than providing pass-through getters and setters, you will need to write a facelets TagHandler or submit patches to MyFaces to "standardize" the tag handler. </quote>
Do we need to "standardize" UpdateActionListener? Or is it up to Facelets/3rd-party to provide the tag handler? Andrew robinson wrote: > There is no way to do this out of the box. You need to create a tag > handler that fills the resposibility of the UpdateActionListenerTag. I > have created one. The code is attached. Just change the packages for > your needs > > The XML to register this is: > <tag> > <tag-name>updateActionListener</tag-name> > > <handler-class>org.bethanyefree.taghandlers.TomahawkUpdateActionListenerHandler</handler-class> > </tag> > > Just add that to your facelet configuration file for the tomahawk > components. > > On 10/3/05, *Denis Parhomenko* <[EMAIL PROTECTED] > <mailto:[EMAIL PROTECTED]>> wrote: > > Hi > > I want use UpdateActionListener with facelets, but facelets told me > that > > com.sun.facelets.tag.TagException: /pages/admin/locations/edit.jsp > @59,116 <t:updateActionListener> Tag Library supports namespace: > http://myfaces.apache.org/tomahawk, but no tag was defined for name: > updateActionListener > at > > com.sun.facelets.compiler.CompilationManager.pushTag(CompilationManager.java:155) > at > > com.sun.facelets.compiler.SAXCompiler$CompilationHandler.startElement(SAXCompiler.java:175) > > As I understand i need add somthing to tomahawk.taglib.xml, but i > don't know what > > Deniss > > > > ------------------------------------------------------------------------ > > /** > * > */ > package org.bethanyefree.taghandlers; > > import java.io.IOException; > > import javax.el.ELException; > import javax.faces.FacesException; > import javax.faces.application.Application; > import javax.faces.component.ActionSource; > import javax.faces.component.UIComponent; > import javax.faces.convert.Converter; > import javax.faces.el.ValueBinding; > import javax.faces.event.ActionListener; > > import org.apache.commons.logging.Log; > import org.apache.commons.logging.LogFactory; > import org.apache.myfaces.custom.updateactionlistener.UpdateActionListener; > > import com.sun.facelets.FaceletContext; > import com.sun.facelets.FaceletException; > import com.sun.facelets.tag.TagAttribute; > import com.sun.facelets.tag.TagConfig; > import com.sun.facelets.tag.TagHandler; > import com.sun.facelets.tag.jsf.ComponentConfig; > > /** > * @author andrew > * > */ > public class TomahawkUpdateActionListenerHandler > extends TagHandler > { > private static Log logger = > LogFactory.getLog(TomahawkUpdateActionListenerHandler.class); > > private TagAttribute converterAttr; > private TagAttribute propertyAttr; > private TagAttribute valueAttr; > > /** > * @param config > */ > public TomahawkUpdateActionListenerHandler(ComponentConfig config) > { > this((TagConfig)config); > } > > /** > * @param config > */ > public TomahawkUpdateActionListenerHandler(TagConfig config) > { > super(config); > valueAttr = getRequiredAttribute("value"); > propertyAttr = getRequiredAttribute("property"); > converterAttr = getAttribute("converter"); > } > > /** > * @see > com.sun.facelets.FaceletHandler#apply(com.sun.facelets.FaceletContext, > javax.faces.component.UIComponent) > */ > public void apply(FaceletContext ctx, UIComponent parent) > throws IOException, FacesException, FaceletException, > ELException > { > logger.error("Apply called. Component: " + parent); > ActionSource actionSource = (ActionSource)parent; > > if (sourceHasProperty(actionSource)) > return; > > UpdateActionListener al = new UpdateActionListener(); > > if (converterAttr != null) > > al.setConverter((Converter)converterAttr.getObject(ctx)); > > Application app = ctx.getFacesContext().getApplication(); > ValueBinding vb = app.createValueBinding(valueAttr.getValue()); > al.setValueBinding(vb); > vb = app.createValueBinding(propertyAttr.getValue()); > al.setPropertyBinding(vb); > actionSource.addActionListener(al); > } > > private boolean sourceHasProperty(ActionSource source) > { > for (ActionListener listener : source.getActionListeners()) > { > if (listener instanceof UpdateActionListener == false) > continue; > UpdateActionListener al = > (UpdateActionListener)listener; > if > (al.getPropertyBinding().getExpressionString().equals( > this.propertyAttr.getValue())) > { > logger.debug("Action listener already has a > listener for " + > this.propertyAttr.getValue()); > return true; > } > } > logger.debug("Action listener for property is not present. > Property: " + > this.propertyAttr.getValue()); > return false; > } > } -- Dave Brondsema Software Developer Cornerstone University
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