Vaadin application with customcomponent doesn't show

General
1

Hallo,
First let congratulate the Vaadin team for such an innovative project.

I’ve been testing the use of Vaadin within Liferay, but found the following:
-my liferay portlet get rendered as I build all the components within the init method:

public void init() {
		Window window = new Window();

		try{
			VerticalLayout root = new VerticalLayout();

			Label label = new Label("Country: CM ");

                       root.addComponent(label);

                      window.setContent(root);
		}catch(Exception e){
			logError(e);
		}

		setMainWindow(window);
	}

-but when used wrapped within a composite component, nothing shows on the Liferay portlet:
Application:


public void init() {
		Window window = new Window();

		try{
			VerticalLayout root = new VerticalLayout();

			SchoolListView list = new SchoolListView();
			root.addComponent(list);
			root.setEnabled(true);

			list.setEnabled(true);
			list.setVisible(true);

			window.setContent(root);

			root.setSizeFull();

			window.setHeight(300f, AbstractComponent.UNITS_PIXELS);
			window.setWidth(300f, AbstractComponent.UNITS_PIXELS);

		}catch(Exception e){
			logError(e);
		}

		setMainWindow(window);
	}

Composite Component:

public SchoolListView() {
        Label label = new Label("Country: CM ");

        setCompositionRoot(label);
	}

I will appreciate any hint as to what causes the issue.
Thanks

2

AWESOME!

The last time I so enjoyed programming was 10 years ago (I finished writing my first virtual machine in C).

It works!

The solution is as follows (Hope it saves someone two days of searching):

When using Composite Components (subclasses of CustomComponent)
within Liferay be carefull to:

-add the top composite object directly to the main window using

Window.addComponent(myTopCompositeObect);

-always set the root child component (CustomComponent.setCompositeRoot) to a Layout of the composite component: the root child (according to the doc) will not be VISIBLE.

-when developing a portlet NEVER USE THE ABSOLUTE LAYOUT! This will be translated (literally) as POSITION:ABSOLUTE in the resulting HTML.

Anyway GOOD WORK guys!

Vaadin is giving a new breath to the Java language.

NB: I will buy an enterprise license as soon as possible.

By the way, what the #$!& does Vaadin means? Anyone?

3


This.