void displayVersions(String path) {
List<PageVersion> pageVersions = pageService.getPageVersions(path);
if (pageVersions.size() > 0) {
final ComboBox pageSelection = new ComboBox();
content.addComponent(pageSelection);
pageSelection.setNullSelectionAllowed(false);
pageSelection.setStyleName("version-selection-box");
pageSelection.setTextInputAllowed(false);
pageSelection.addValueChangeListener(
new ValueChangeListener() {
private static final long serialVersionUID = 1L;
@Override
public void valueChange(com.vaadin.data.Property.ValueChangeEvent event) {
selectedVersion = (PageVersion) pageSelection.getValue();
if (selectedVersion != null) {
Page page =
pageService.getPageByVersion(beanItem.getPath(), selectedVersion.getName());
page.setPath(beanItem.getPath());
previewForm.setBean(page);
previewLayout.setTitle(page.getSubject());
((PagePreviewFormLayout) previewLayout).displayPageInfo(page);
}
}
});
pageSelection.setItemCaptionMode(ItemCaptionMode.EXPLICIT);
pageSelection.setNullSelectionAllowed(false);
for (int i = 0; i < pageVersions.size(); i++) {
PageVersion version = pageVersions.get(i);
pageSelection.addItem(version);
pageSelection.setItemCaption(version, getVersionDisplay(version, i));
}
if (pageVersions.size() > 0) {
pageSelection.setValue(pageVersions.get(pageVersions.size() - 1));
}
}
}
