package org.vaadin.spring.samples.mvp.ui.view;
import java.util.List;
import javax.annotation.PostConstruct;
import javax.inject.Inject;
import org.apache.commons.collections4.CollectionUtils;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.vaadin.spring.UIScope;
import org.vaadin.spring.navigator.SpringViewProvider;
import org.vaadin.spring.navigator.VaadinView;
import org.vaadin.spring.samples.mvp.ui.component.grid.DataGrid;
import org.vaadin.spring.samples.mvp.ui.component.listener.TabSelectedListener;
import org.vaadin.spring.samples.mvp.ui.component.nav.NavElement;
import org.vaadin.spring.samples.mvp.ui.component.nav.NavElementFactory;
import com.vaadin.navigator.View;
import com.vaadin.navigator.ViewChangeListener.ViewChangeEvent;
import com.vaadin.ui.Component;
import com.vaadin.ui.TabSheet;
@UIScope
@VaadinView(name = TabPanelView.NAME)
public class TabPanelView extends TabSheet implements View {
private static Logger log = LoggerFactory.getLogger(TabPanelView.class);
public static final String NAME = "tabPanel";
@Inject
private SpringViewProvider viewProvider;
@Inject
private TabSelectedListener selectedListener;
@PostConstruct
private void init() {
setVisible(false);
setSizeFull();
addSelectedTabChangeListener(selectedListener);
}
public void setOrigin(NavElement origin) {
String tabCollectionId = String.valueOf(origin.getId().intValue());
addCaptions(origin, getNavElements(tabCollectionId));
}
protected List<NavElement> getNavElements(String id) {
NavElementFactory factory = new NavElementFactory();
return factory.getNavElements("screens/" + id + "/tabs.json");
}
protected void addCaptions(NavElement origin, List<NavElement> targets) {
if (getComponentCount() > 0) {
removeAllComponents();
}
if (CollectionUtils.isNotEmpty(targets)) {
setVisible(true);
Component c;
String viewName;
for (NavElement target: targets) {
viewName = getViewName(origin, target);
c = generateTab(viewName);
if (c != null) {
addTab(c, target.getName());
} else {
log.warn("View [{}] not available (or not yet implemented).", viewName);
addTab(DataGrid.emptyGrid(), target.getName());
}
}
} else {
setVisible(false);
}
}
private Component generateTab(String viewName) {
return (Component) viewProvider.getView(viewName);
}
private String getViewName(NavElement origin, NavElement target) {
StringBuilder builder = new StringBuilder();
builder.append(origin.getAlias());
builder.append("/");
builder.append(target.getAlias());
return builder.toString();
}
@Override
public void enter(ViewChangeEvent event) {
}
}