我有一个Liferay Vaadin portlet有两种模式:编辑和查看模式。我在portlet中看到的第一件事是带有标签的viewContent:“未配置,如果未配置portlet。现在,如果我在Editmode中配置portlet,我会看到我在配置中所做的事情,它到目前为止工作但是现在如果我退出或重新启动浏览器(退出并重新开始),我看到未配置的带有标签的viewContent(“未配置”)
代码:
Window window; // Main Window
VerticalLayout viewContent; // View Mode Content
VerticalLayout editContent; // Edit Mode Content(Configs)
Label viewText;
Button b;
Panel panel;
Embedded PictureA;
public void init() {
window = new Window("");
setMainWindow(window);
viewContent = new VerticalLayout();
editContent = new VerticalLayout();
PictureA = new Embedded("", new ExternalResource(PictureAURL));
PictureA.setType(Embedded.TYPE_IMAGE);
panel = new Panel();
panel.setStyleName(Reindeer.PANEL_LIGHT);
// viewContent
viewText = new Label("Not Configured" , Label.CONTENT_XHTML);
viewContent.addComponent(viewText);
window.setContent(viewContent);
// EditContent
b = new Button("PictureA");
b.addListener(this):
editContent.addComponent(b);
}
public void buttonClick(ClickEvent event) {
if (event.getSource == b) {
viewContent.revomeComponent(viewText);
panel.addComponent(PictureA);
viewContent.addComponent(panel);
}
}
@Override
public void handleRenderRequest(RenderRequest request,
RenderResponse response, Window window) {
}
@Override
public void handleActionRequest(ActionRequest request,
ActionResponse response, Window window) {
}
@Override
public void handleEventRequest(EventRequest request,
EventResponse response, Window window) {
}
@Override
public void handleResourceRequest(ResourceRequest request,
ResourceResponse response, Window window) {
// Switch the view according to the portlet mode
if (request.getPortletMode() == PortletMode.EDIT)
window.setContent(editContent);
else if (request.getPortletMode() == PortletMode.VIEW)
window.setContent(viewContent);
}
情况:如果我点击按钮“PictureA”,标签“未配置”将被删除,带有嵌入图片的面板将被添加到viewContent。
唯一的问题是它没有被保存:/任何想法?也许我忘记了什么?
答案 0 :(得分:4)
是的,您没有在任何地方保存配置。当会话结束(关闭浏览器)并重新打开应用程序时,会再次执行init并恢复原始的“未配置”状态。
例如,您可以将其存储到portlet首选项中。在handleResourceRequest方法中,您必须获取PortletPreferences的句柄:
this.prefs = request.getPreferences();
要在按钮单击处理程序中保存状态,请执行以下操作:
this.prefs.setValues("myapp.configured", new String[] {"true"});
this.prefs.store();
您还想恢复handleResourceRequest方法中已有的状态。做类似的事情:
boolean configured = Boolean.parseBoolean(this.prefs.getValues("myapp.configured", new String[] { "false" })[0]);
if (configured && PictureA.getParent() == null) {
// PictureA is not visible, but it should be.
viewContent.removeComponent(viewText);
panel.addComponent(PictureA);
viewContent.addComponent(panel);
}