我的问题很简单,但是我不知道如何解决。我有一个feedbackPanel,如果BootstrapDownloadLink失败,我想显示一条错误消息。有了提交,我可以轻松地做到:protected void onSubmit(AjaxRequestTarget target) { ... error("File_not_found"); //Wicket will print this on the feedback panel target.add(getModalPanel().getFeedbackPanel()); //But i need to refresh it first}但是按钮在面板内部,我填充了populateItem,这是我知道向其插入Bootstrap样式的唯一方法。按钮的代码:BootstrapDownloadLink downloadDocument = new BootstrapDownloadLink(IDITEMREPEATER, file) { @Override public void onClick() { File file = (File)getModelObject(); if(file.exists()) { IResourceStream resourceStream = new FileResourceStream(new org.apache.wicket.util.file.File(file)); getRequestCycle().scheduleRequestHandlerAfterCurrent(new ResourceStreamRequestHandler(resourceStream, file.getName())); } else { error(getString("error_fichero_no_existe")); /// ???? need to refresh-> getModalPanel().getFeedbackPanel() } }};downloadDocument.setIconType(GlyphIconType.clouddownload);downloadDocument.add(new AttributeModifier("title", getString("documentos.descargar")));downloadDocument.add(new AttributeModifier("class", " btn btn-info negrita btn-xs center-block"));downloadDocument.setVisible(Boolean.TRUE);list.add(downloadDocument);
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