Hi, I am trying to create a wicket panel that renders markup from some remote source, but if fetching fails, renders some fallback markup. I want to achieve this with minimal code.
I tried two approaches one based on overriding getMarkup(), one based on http://wicket.apache.org/guide/guide/advanced.html#advanced_5, both fail: /** * attempts to use custom markup by overriding getMarkup()... but html is used */ public class CustomMarkupFallback1Panel extends GenericPanel<String> { @Override public IMarkupFragment getMarkup() { return Markup.of("it works"); } } CustomMarkupFallback1Panel.html: <wicket:panel> Fail! </wicket:panel> This first one overrides getMarkup() as suggested in the javadoc of IMarkupResourceStreamProvider, but what gets rendered is instead the static html (even though the debugger walks through getMarkup(). The second approach fails using IMarkupResourceStreamProvider works for the intended markup, but not for the fallback markup public class CustomMarkupFallback2Panel extends GenericPanel<String> IMarkupResourceStreamProvider { @Override public IResourceStream getMarkupResourceStream(MarkupContainer container, Class<?> containerClass) { if (getModelObject() == null) { // thows Exception, see below. html file exists return getMarkup().getMarkupResourceStream(); } else { // works return new StringResourceStream(getModelObject()); } } } At least the first failure seems like a bug to me, not sure whether the second approach is supposed to work, or how else to load markup the wicket way. Is there maybe a completely different approach to achieve what I try to do? cheers, Thibault java.io.IOException: Stream closed at java.io.BufferedInputStream.getBufIfOpen(BufferedInputStream.java:162) at java.io.BufferedInputStream.read(BufferedInputStream.java:325) at java.io.BufferedInputStream.fill(BufferedInputStream.java:235) at java.io.BufferedInputStream.read(BufferedInputStream.java:254) at org.apache.wicket.util.io.BOMInputStream.getBOM(BOMInputStream.java:217) at org.apache.wicket.util.io.BOMInputStream.readFirstBytes(BOMInputStream.java:261) at org.apache.wicket.util.io.BOMInputStream.read(BOMInputStream.java:312) at org.apache.wicket.util.io.XmlReader.getXmlDeclaration(XmlReader.java:183) at org.apache.wicket.util.io.XmlReader.init(XmlReader.java:106) at org.apache.wicket.util.io.XmlReader.<init>(XmlReader.java:81) at org.apache.wicket.markup.parser.XmlPullParser.parse(XmlPullParser.java:605) at org.apache.wicket.markup.AbstractMarkupParser.parse(AbstractMarkupParser.java:178) at org.apache.wicket.markup.loader.SimpleMarkupLoader.loadMarkup(SimpleMarkupLoader.java:51) at org.apache.wicket.markup.loader.InheritedMarkupMarkupLoader.loadMarkup(InheritedMarkupMarkupLoader.java:57) at org.apache.wicket.markup.loader.DefaultMarkupLoader.loadMarkup(DefaultMarkupLoader.java:52) at org.apache.wicket.markup.MarkupFactory.loadMarkup(MarkupFactory.java:412) at org.apache.wicket.markup.MarkupCache.loadMarkup(MarkupCache.java:448) at org.apache.wicket.markup.MarkupCache.loadMarkupAndWatchForChanges(MarkupCache.java:544) at org.apache.wicket.markup.MarkupCache.getMarkup(MarkupCache.java:305) at org.apache.wicket.markup.MarkupFactory.getMarkup(MarkupFactory.java:236) at org.apache.wicket.markup.MarkupFactory.getMarkup(MarkupFactory.java:194) at org.apache.wicket.MarkupContainer.getAssociatedMarkup(MarkupContainer.java:405) at org.apache.wicket.MarkupContainer.getAssociatedMarkupStream(MarkupContainer.java:372) at org.apache.wicket.markup.html.panel.AssociatedMarkupSourcingStrategy.renderHeadFromAssociatedMarkupFile(AssociatedMarkupSourcingStrategy.java:244) at org.apache.wicket.markup.html.panel.AssociatedMarkupSourcingStrategy.renderHead(AssociatedMarkupSourcingStrategy.java:220) at org.apache.wicket.Component.renderHead(Component.java:2652) at org.apache.wicket.markup.renderStrategy.ChildFirstHeaderRenderStrategy$1.component(ChildFirstHeaderRenderStrategy.java:85) at org.apache.wicket.markup.renderStrategy.DeepChildFirstVisitor.visit(DeepChildFirstVisitor.java:96) at org.apache.wicket.markup.renderStrategy.DeepChildFirstVisitor.visit(DeepChildFirstVisitor.java:87) at org.apache.wicket.markup.renderStrategy.DeepChildFirstVisitor.visit(DeepChildFirstVisitor.java:51) at org.apache.wicket.markup.renderStrategy.ChildFirstHeaderRenderStrategy.renderChildHeaders(ChildFirstHeaderRenderStrategy.java:78) at org.apache.wicket.markup.renderStrategy.ChildFirstHeaderRenderStrategy.renderHeader(ChildFirstHeaderRenderStrategy.java:57) at org.apache.wicket.markup.html.internal.HtmlHeaderContainer.onComponentTagBody(HtmlHeaderContainer.java:170) at org.apache.wicket.markup.html.panel.DefaultMarkupSourcingStrategy.onComponentTagBody(DefaultMarkupSourcingStrategy.java:71) at org.apache.wicket.Component.internalRenderComponent(Component.java:2514) at org.apache.wicket.MarkupContainer.onRender(MarkupContainer.java:1496) at org.apache.wicket.Component.internalRender(Component.java:2344) at org.apache.wicket.Component.render(Component.java:2272) at org.apache.wicket.MarkupContainer.renderNext(MarkupContainer.java:1392) at org.apache.wicket.MarkupContainer.renderAll(MarkupContainer.java:1557) at org.apache.wicket.Page.onRender(Page.java:887) --------------------------------------------------------------------- To unsubscribe, e-mail: users-unsubscr...@wicket.apache.org For additional commands, e-mail: users-h...@wicket.apache.org
