Jeff, Read through http://wiki.apache.org/myfaces/How_The_Immediate_Attribute_Works and make sure JSF behavior matches your expectations.
-Mike On 10/26/05, Jeffrey Porter <[EMAIL PROTECTED]> wrote: > > > > > > I've complied my code into an example ear. > > http://www.jeffreyporter.pwp.blueyonder.co.uk/ebusiness.ear > > > > This example will be deployed to… > > http://localhost:8080/ebusiness/ > > > > The code in the EAR works. But it's a big fudge! > > > > Code that works is.. > > > > boolean x = true; // set to false to turn on other code. > > > > if (x) { > > UIInput input2 = (UIInput) > ctxt.getViewRoot().findComponent("body").findComponent("_id0").findComponent("firstname"); > > input2.setValue("firstname"); > > > > input2 = (UIInput) > ctxt.getViewRoot().findComponent("body").findComponent("_id0").findComponent("surname"); > > input2.setValue("Surname"); > > } > > > > Code that doesn't work is… > > > bean.setFirstname(firstName+ "::"); > > bean.setSurname("yyyyyyyyyyy"); > > > > > > The code can be found in > > > > Ebusiness.ear/ebusiness.war/WEB-INF/lib/ebusiness-support-action.jar > > > > > > If anyone has any ideas on what I'm missing, please do tell. > > > > Thanks > > Jeff. > > > > > > > > > -----Original Message----- > From: Jeffrey Porter > [mailto:[EMAIL PROTECTED] > Sent: 26 October 2005 13:08 > To: MyFaces Discussion > Subject: RE: Help still needed with valueChangeListener > > > > Hi Stefan, > > > > I've removed the saveState, but no change. > > I also have the context-param in my web.xml. > > > > The difference between what I've got & what you posted below, is that I've > not got my action method on the bean. > > Instead it's on a Manager class. > > > > Jeff. > > > > > > > > > > -----Original Message----- > From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] > Sent: 26 October 2005 13:01 > To: [email protected] > Subject: RE: Help still needed with valueChangeListener > > > > Jeff > > I haven't been using > > <t:saveState > > > > So I'm not sure if you should have this > > > > I use > > <context-param> > > <param-name>javax.faces.STATE_SAVING_METHOD</param-name> > > <param-value>client</param-value> > > </context-param> > > > > In my web.xml > > > > > > > Stefan Maric | IT & Professional Services | BT Global Services > > E: [EMAIL PROTECTED] | www.bt.com/globalservices > > > > This electronic message contains information from British Telecommunications > plc, which may be privileged > > or confidential. The information is intended for use only by the > individual(s) or entity named above. If you > > are not the intended recipient, be aware that any disclosure, copying, > distribution or use of the contents of > > this information is strictly prohibited. If you have received this > electronic message in error, please notify > > me by telephone or email (to the number or email address above) immediately. > > > > Activity and use of the British Telecommunications plc e-mail system is > monitored to secure its effective > > operation and for other lawful business purposes. Communications using this > system will also be monitored > > and may be recorded to secure effective operation and for other lawful > business purposes. > > > > British Telecommunications plc. Registered office: 81 Newgate Street London > EC1A 7AJ Registered in > > England no: 1800000 > > > > <hr size=2 width="100%" align=center tabindex=-1> > > From: Jeffrey Porter > [mailto:[EMAIL PROTECTED] > Sent: Wednesday, October 26, 2005 12:22 PM > To: MyFaces Discussion > Subject: RE: Help still needed with valueChangeListener > > > > Hi Stefan, > > > > This is what I'm trying at the moment. > > > > This though doesn't change the value displayed on the web page. > > > > The member variable has the new value set, but the value displayed on the > page doesn't change. > > When the method, firstnameSelected, gets called a second time I can see the > modified value in the bean instance. > > > > I'm at a loss of why this doesn't work. > > > > Jeff. > > > > The code I have is… > > > > CODE… > > FacesContext ctxt = FacesContext.getCurrentInstance(); > > > > String firstName = ((String)vce.getNewValue()); > > System.out.println("A value has changed!" + firstName); > > > > bean.setFirstname(firstName); > > bean.setSurname("yyyyyyyyyyy"); > > > > FacesContext.getCurrentInstance().renderResponse(); > > > > JSP… > > <body> > > <f:view> > > <t:saveState id="saveStateBean01" value="#{ncmManager}"/> > > <h:panelGroup id="body"> > > <h:form> > > > > <h:inputText > > id="firstname" > > valueChangeListener="#{ncmManager.categorySelected}" > > value="#{ncmManager.bean.firstname}" > > immediate="true" > > onblur="submit()" > > /> > > > > <h:inputText immediate="true" id="surname" > value="#{ncmManager.bean.surname}" required="true" /> > > > > </h:form> > > </h:panelGroup> > > </f:view> > > </body> > > > > > > > > > > > > > > > > > > -----Original Message----- > From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] > Sent: 26 October 2005 12:11 > To: [email protected] > Subject: RE: Help still needed with valueChangeListener > > > > Jeff > > > > I want to change the value of surname based on what the firstname value is. > > I can get the firstname value from the event > > > > > > private Bean bean = new Bean(); // contains 2 fields firstname & surname + > getter/setter methods > > > > This is a member variable of your NonConformingMaterialManager Class > > and is accessible to ANY method within NonConformingMaterialManager > > > > So in your firstnameSelected method you can perform Surname manipulation > using > > bean.setSurname("….."); > > > > > > public void firstnameSelected(ValueChangeEvent vce) { > > > > bean.setFirstName((String)vce.getNewValue()); > > > > // do Surname stuff > > Bean.setSurname("<modified value>"); > > > > > > // Now update GUI > > FacesContext.getCurrentInstance().renderResponse(); > > } > > > > Hope this is what you're looking for > > > > > Stefan Maric | IT & Professional Services | BT Global Services > > E: [EMAIL PROTECTED] | www.bt.com/globalservices > > > > This electronic message contains information from British Telecommunications > plc, which may be privileged > > or confidential. The information is intended for use only by the > individual(s) or entity named above. If you > > are not the intended recipient, be aware that any disclosure, copying, > distribution or use of the contents of > > this information is strictly prohibited. If you have received this > electronic message in error, please notify > > me by telephone or email (to the number or email address above) immediately. > > > > Activity and use of the British Telecommunications plc e-mail system is > monitored to secure its effective > > operation and for other lawful business purposes. Communications using this > system will also be monitored > > and may be recorded to secure effective operation and for other lawful > business purposes. > > > > British Telecommunications plc. Registered office: 81 Newgate Street London > EC1A 7AJ Registered in > > England no: 1800000 > > > > <hr size=2 width="100%" align=center tabindex=-1> > > From: Jeffrey Porter > [mailto:[EMAIL PROTECTED] > Sent: Wednesday, October 26, 2005 11:44 AM > To: MyFaces Discussion > Subject: RE: Help still needed with valueChangeListener > > > > > > Thanks Stefan. > > You response was a great help. > > > > > > I'm still left with one question though. > > > > I've been following the tutorial from the IBM website > > (see > http://www-128.ibm.com/developerworks/java/library/j-jsf2/index.html) > > > > So I have a Manager class the references the bean. > > The Manager class contains the method called by jsp onchange (keeping the > logic away from the holding bean) > > > > E.g. > > > > <h:inputText > > valueChangeListener="#{ncmManager.firstnameSelected}" > > value="#{ncmManager.bean.firstname}" > > immediate="true" > > onchange="submit()" > > /> > > <h:inputText immediate="true" id="surname" > value="#{ncmManager.bean.surname}" required="true" /> > > > > public class NonConformingMaterialManager implements java.io.Serializable > { > > private Bean bean; > > { > > bean = new Bean(); // contains 2 fields firstname & > surname + getter/setter methods > > } > > public void firstnameSelected(ValueChangeEvent vce) { > > // do stuff > > } > > } > > > > My question is this. How do I change other values in the page? > > I want to change the value of surname based on what the firstname value is. > > I can get the firstname value from the event. > > > > The only code I can find to change the value of the surname field is… > > > > UIInput input2 = (UIInput) > ctxt.getViewRoot().findComponent("body").findComponent("_id0").findComponent("surname"); > > input2.setValue("newSurname"); > > > > If I have to do this, and can't use the member variable (bean), then what is > the point of having the "bean" in the manager class & > > having the jsp tags use the attribute value="#{ncmManager.bean.firstname}" > ???? > > > > If the firstnameSelected method was on the actual Bean class, then I could > access the surname directly. Since my method is on a Manager class though, I > can't. > > > > I hope that made some scene. > > > > Thanks for any input on this. > > > > Jeff > > > > > > > > > > > > -----Original Message----- > From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] > Sent: 26 October 2005 09:38 > To: [email protected] > Subject: RE: Help still needed with valueChangeListener > > > > Jeff > > > > 1) > > Shouldn't this > > ctxt.getExternalContext().getSessionMap().put("SHOWTHIS", > "partNumber"); > > be > > ctxt.getExternalContext().getSessionMap().put( "partNumber", "SHOWTHIS"); > > > > surely the component id is the key > > > > 2) > > You could use something like > > <h:inputText id="partNumber" > > value="#{nonConformingMaterial.partNumber}" required="true" > immediate="true" > > onchange="submit()"valueChangeListener="#{nonConformingMaterial. > processValueChange" /> > > > > so you would move > > public void processValueChange(ValueChangeEvent vce) throws > AbortProcessingException { > > into your backing bean class > > and then your code would have direct access to the getter/setter methods > > > > getPartNumber() & setPartNumber() > > so your code could > > > > public void processValueChange(ValueChangeEvent vce) throws > AbortProcessingException { > > String partNo = ((String)vce.getNewValue()); > > System.out.println("A value has changed!" + partNo); > > > > setPartNumber(partNo); > > FacesContext ctxt = FacesContext.getCurrentInstance(); > > ctxt.renderResponse(); > > } > > > > 3) > > The onchange="… doesn't fire until the component loses focus > > > > If this is NOT OK then you should consider using onclick="… > > > > > > > Stefan Maric | IT & Professional Services | BT Global Services > > E: [EMAIL PROTECTED] | www.bt.com/globalservices > > > > This electronic message contains information from British Telecommunications > plc, which may be privileged > > or confidential. The information is intended for use only by the > individual(s) or entity named above. If you > > are not the intended recipient, be aware that any disclosure, copying, > distribution or use of the contents of > > this information is strictly prohibited. If you have received this > electronic message in error, please notify > > me by telephone or email (to the number or email address above) immediately. > > > > Activity and use of the British Telecommunications plc e-mail system is > monitored to secure its effective > > operation and for other lawful business purposes. Communications using this > system will also be monitored > > and may be recorded to secure effective operation and for other lawful > business purposes. > > > > British Telecommunications plc. Registered office: 81 Newgate Street London > EC1A 7AJ Registered in > > England no: 1800000 > > > > <hr size=2 width="100%" align=center tabindex=-1> > > From: Jeffrey Porter > [mailto:[EMAIL PROTECTED] > Sent: Tuesday, October 25, 2005 4:04 PM > To: MyFaces Discussion > Subject: Help still needed with valueChangeListener > > > > > > > > I have the code that calls my ValueChangeListener implementation. > > That part works, the bit I'm having trouble with is setting the new a value > on page. > > > > JSP… > > <h:inputText > > id="partNumber" > > value="#{nonConformingMaterial.partNumber}" > > required="true" > > immediate="true" > > onchange="... > > [Message clipped]
