hey,
i tried the resizable-example from this page:
http://www.wickext.org/demo/i have a problem with adding a resizable behavior to a label. i dun get it. if i comment it out, it works fine, but not if i try to add it. here is my code:
JAVA:
public class Resize extends WebPage{
public Resize(){
Label label = new Label("example", "Resize me !");
add(label);
label.add(new ResizableBehavior());
}
}i am importing everything that is needed and also include the right wicket-id, but i get the following if i dun leave out all the html tags like head, body and blah (if i leave it out, i get the message, but i cannot resize):
WicketMessage: Exception in rendering component: [MarkupContainer [Component id = _header_0]]
Root cause:
java.lang.IllegalArgumentException: reference cannot be null
at org.apache.wicket.markup.html.internal.HeaderResponse.renderCSSReference(HeaderResponse.java:75)
at org.odlabs.wiquery.core.commons.WiQueryCoreHeaderContributor.importCoreUiResource(WiQueryCoreHeaderContributor.java:108)
at org.odlabs.wiquery.core.commons.WiQueryCoreHeaderContributor.renderHead(WiQueryCoreHeaderContributor.java:165)
at org.apache.wicket.behavior.AbstractHeaderContributor.renderHead(AbstractHeaderContributor.java:68)
at org.apache.wicket.Component.renderHead(Component.java:2716)
at org.apache.wicket.markup.html.internal.HtmlHeaderContainer$1.component(HtmlHeaderContainer.java:231)
at org.apache.wicket.MarkupContainer.visitChildren(MarkupContainer.java:871)
at org.apache.wicket.MarkupContainer.visitChildren(MarkupContainer.java:911)
at org.apache.wicket.markup.html.internal.HtmlHeaderContainer.renderHeaderSections(HtmlHeaderContainer.java:222)
at org.apache.wicket.markup.html.internal.HtmlHeaderContainer.onComponentTagBody(HtmlHeaderContainer.java:137)
at org.apache.wicket.Component.renderComponent(Component.java:2629)
at org.apache.wicket.MarkupContainer.onRender(MarkupContainer.java:1525)
at org.apache.wicket.Component.render(Component.java:2454)
at org.apache.wicket.MarkupContainer.autoAdd(MarkupContainer.java:229)
at org.apache.wicket.markup.resolver.HtmlHeaderResolver.resolve(HtmlHeaderResolver.java:80)
at org.apache.wicket.MarkupContainer.renderNext(MarkupContainer.java:1430)
at org.apache.wicket.MarkupContainer.renderAll(MarkupContainer.java:1541)
at org.apache.wicket.Page.onRender(Page.java:1547)
at org.apache.wicket.Component.render(Component.java:2454)
at org.apache.wicket.Page.renderPage(Page.java:914)
at org.apache.wicket.request.target.component.BookmarkablePageRequestTarget.respond(BookmarkablePageRequestTarget.java:262)
at org.apache.wicket.request.AbstractRequestCycleProcessor.respond(AbstractRequestCycleProcessor.java:105)
at org.apache.wicket.RequestCycle.processEventsAndRespond(RequestCycle.java:1248)
at org.apache.wicket.RequestCycle.step(RequestCycle.java:1319)
at org.apache.wicket.RequestCycle.steps(RequestCycle.java:1418)
at org.apache.wicket.RequestCycle.request(RequestCycle.java:544)
at org.apache.wicket.protocol.http.WicketFilter.doGet(WicketFilter.java:456)
at org.apache.wicket.protocol.http.WicketFilter.doFilter(WicketFilter.java:289)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:233)
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:191)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:128)
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:102)
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109)
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:286)
at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:845)
at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:583)
at org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:447)
at java.lang.Thread.run(Thread.java:619)
Complete stack:
org.apache.wicket.WicketRuntimeException: Exception in rendering component: [MarkupContainer [Component id = _header_0]]
at org.apache.wicket.Component.renderComponent(Component.java:2668)
at org.apache.wicket.MarkupContainer.onRender(MarkupContainer.java:1525)
at org.apache.wicket.Component.render(Component.java:2454)
at org.apache.wicket.MarkupContainer.autoAdd(MarkupContainer.java:229)
at org.apache.wicket.markup.resolver.HtmlHeaderResolver.resolve(HtmlHeaderResolver.java:80)
at org.apache.wicket.MarkupContainer.renderNext(MarkupContainer.java:1430)
at org.apache.wicket.MarkupContainer.renderAll(MarkupContainer.java:1541)
at org.apache.wicket.Page.onRender(Page.java:1547)
at org.apache.wicket.Component.render(Component.java:2454)
at org.apache.wicket.Page.renderPage(Page.java:914)
at org.apache.wicket.request.target.component.BookmarkablePageRequestTarget.respond(BookmarkablePageRequestTarget.java:262)
at org.apache.wicket.request.AbstractRequestCycleProcessor.respond(AbstractRequestCycleProcessor.java:105)
at org.apache.wicket.RequestCycle.processEventsAndRespond(RequestCycle.java:1248)
at org.apache.wicket.RequestCycle.step(RequestCycle.java:1319)
at org.apache.wicket.RequestCycle.steps(RequestCycle.java:1418)
at org.apache.wicket.RequestCycle.request(RequestCycle.java:544)
at org.apache.wicket.protocol.http.WicketFilter.doGet(WicketFilter.java:456)
BUT WHY???