Ok, I think it's clearer to me what you're trying to do. Your first assertion is correct; Components are not stateful. You can either put something into the action link context or into the session to maintain your state.
Take a look at the source for *AbstractTextField*<http://tapestry.apache.org/tapestry5/apidocs/src-html/org/apache/tapestry/corelib/base/AbstractTextField.html#line.44>, it stores the data using a ValidationTracker, which is stored in the session. Josh On Feb 4, 2008 8:51 AM, Alexander Lamb <[EMAIL PROTECTED]> wrote: > Well, getting close, but not quite. > > Indeed, the getClientId works fine, but since my component is actually > a graph (JFreeChart) being rendered from an URL, it looks like the > clientId is not pushed to the ActionLink created. > > @SuppressWarnings("unchecked") > void beginRender(MarkupWriter writer) { > _clientId = _renderSupport.allocateClientId(_resources.getId()); > System.out.println("--- CLIENT ID: " + _clientId); > System.out.println("--- RESOURCES ID: " + _resources.getId()); > System.out.println("--- RESOURCES COMPLETE ID: " + > _resources.getCompleteId()); > //generate action link > Link link = _resources.createActionLink("chart", false, _width, > _height); > Element img = writer.element("img", "src", link, "id", > _clientId); > > if(_popupWidth == 0) > _popupWidth = 2 * _width; > if(_popupHeight == 0) > _popupHeight = 2 * _height; > link = _resources.createActionLink("chart", false, _popupWidth, > _popupHeight); > img.attribute("onclick", "window.open('"+link > +"','_blank','width="+(_popupWidth+24)+", height="+(_popupHeight > +24)+"')"); > img.attribute("style", "cursor:pointer"); > > _resources.renderInformalParameters(writer); > } > > > My trace and the HTML source generated shows very well the clientId is > incremented correctly... but the ActionLink generated is not > (completeId stays always as the initial id). > > Alex > > Le 4 févr. 08 à 15:45, Chris Lewis a écrit : > > > Alex, > > > > Id generation, as far as I know, does not come for free. If you want > > to receive an id generated by T5, you have to explicitly request it. > > You'll find this done in one of the parent classes of the field > > elements - possibly in AbstractField. I've implemented it the same > > way in several different components, one of which you can see here: > > > > > http://code.google.com/p/gc-tapestry-components/source/browse/trunk/gc-tapestry5-components/src/main/java/net/godcode/t5c/components/SlideShow.java > > > > The key parts are: > > > > @Inject > > private ComponentResources resources; > > @Environmental > > private PageRenderSupport renderSupport; > > /** The client-side id. */ > > private String clientId; > > /* Render phase. */ > > @SetupRender > > void setupRender() { > > clientId = > > renderSupport.allocateClientId(resources.getId()); > > } > > > > And then making sure you insert clientId into your component tag's > > id attribute. This could probably be isolated into a mixin, or you > > could probably just extend AbstractField. That would make sense as > > long as your component's behavior merits the semantics of a field > > (which it doesn't seem to). > > > > Hope that helps. > > > > chris > > > > > > Alexander Lamb wrote: > >> Hello list, > >> > >> It looks like custom components are not statefull. > >> > >> Indeed, I have a loop which contains a graph I generate and a > >> TextField (for testing purposes), and the generated code looks like > >> this: > >> > >> <div><img src="./ > >> statistics > >> .dashboardview.enrollmentbenchmarkchart.monthserieslinechart:chart/ > >> 460/280"></div></div></td></tr><tr><td><input id="textfield_8" > >> name="textfield_8" type="text" value="ITALY"><img alt="[Error]" > >> class="t-error-icon t-invisible" id="textfield_8:icon" src="assets/ > >> tapestry/field-error-marker.gif"><div> IT <div><img src="./ > >> statistics > >> .dashboardview.enrollmentbenchmarkchart.monthserieslinechart:chart/ > >> 460/280"></div></div></td></tr><tr><td><input id="textfield_9" > >> name="textfield_9" type="text" value="NETHERLANDS"><img > >> alt="[Error]" class="t-error-icon t-invisible" > >> id="textfield_9:icon" src="assets/tapestry/field-error- > >> marker.gif"><div> NL <div><img src="./ > >> statistics > >> .dashboardview.enrollmentbenchmarkchart.monthserieslinechart:chart/ > >> 460/280"></div></div></td></tr><tr><td><input id="textfield_10" > >> name="textfield_10" type="text" value="NORWAY"><img alt="[Error]" > >> class="t-error-icon t-invisible" id="textfield_10:icon" src="assets/ > >> tapestry/field-error-marker.gif"><div> NO > >> As you can see, my TextField gets incremented but not my > >> enrollmentbenchmarkchart ! > >> Should I file a bug for this? > >> P.S. I tried to generate the ids but it didn't work. > >> Thanks, > >> > >> Alex > >> > >> --------------------------------------------------------------------- > >> To unsubscribe, e-mail: [EMAIL PROTECTED] > >> For additional commands, e-mail: [EMAIL PROTECTED] > >> > >> > > > > > > --------------------------------------------------------------------- > > To unsubscribe, e-mail: [EMAIL PROTECTED] > > For additional commands, e-mail: [EMAIL PROTECTED] > > > > > --------------------------------------------------------------------- > To unsubscribe, e-mail: [EMAIL PROTECTED] > For additional commands, e-mail: [EMAIL PROTECTED] > > -- -- TheDailyTube.com. Sign up and get the best new videos on the internet delivered fresh to your inbox.
