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---
title: Vaadin 7 Hierarchical Container And Tree Component Example With Liferay Organization Service
order: 26
layout: page
---
[[vaadin-7-hierarchical-container-and-treecomponent-example-with-liferay-organizationservice]]
= Vaadin 7 hierarchical container and TreeComponent example with Liferay OrganizationService
I recently needed a portlet to display the Organizations/Locations a
user belongs to in a Hierarchical Tree. I used Vaadin's tree and
hierarchical container components along with information from Vaadin's
book of examples to create the code below (http://demo.vaadin.com/book-examples-vaadin7/book#component.tree.itemstylegenerator).
See <<img/DmoOrgTreeUI.java,DmoOrgTreeUI.java>> for full source code.
[source,java]
....
private void buildMainLayout() throws SystemException, PortalException {
if (viewContent.getComponentCount() > 0) {
viewContent.removeAllComponents();
}
viewContent.setMargin(true);
viewContent.addStyleName("view");
List orgList = new ArrayList();
orgList = OrganizationLocalServiceUtil.getUserOrganizations(user.getUserId());
final HierarchicalContainer container = createTreeContent(orgList);
tree = new Tree("My Organizations", container);
tree.addStyleName("checkboxed");
tree.setSelectable(false);
tree.setItemCaptionMode(ItemCaptionMode.PROPERTY);
tree.setItemCaptionPropertyId("name");
tree.addItemClickListener(new ItemClickEvent.ItemClickListener() {
public void itemClick(ItemClickEvent event) {
if (event.getItemId().getClass() == Long.class) {
long itemId = (Long) event.getItemId();
if (checked.contains(itemId)) {
checkboxChildren(container, itemId, false);
}
else {
checkboxChildren(container, itemId, true);
tree.expandItemsRecursively(itemId);
}
}
tree.markAsDirty();
}
});
Tree.ItemStyleGenerator itemStyleGenerator = new Tree.ItemStyleGenerator() {
@Override
public String getStyle(Tree source, Object itemId) {
if (checked.contains(itemId))
return "checked";
else
return "unchecked";
}
};
tree.setItemStyleGenerator(itemStyleGenerator);
viewContent.addComponent(tree);
viewContent.setVisible(true);
setContent(viewContent);
}
public void checkboxChildren(HierarchicalContainer hc, long itemId, boolean bAdd) {
try {
if (bAdd) {
checked.add(itemId);
}
else {
checked.remove(itemId);
Object iParendId = hc.getParent(itemId);
while (iParendId != null) {
checked.remove(iParendId);
iParendId = hc.getParent(iParendId);
}
}
if (hc.hasChildren(itemId)) {
Collection children = hc.getChildren(itemId);
for (Object o : children) {
if (o.getClass() == Long.class) {
itemId = (Long) o;
checkboxChildren(hc, itemId, bAdd);
}
}
}
}
catch (Exception e) {
Notification.show("Unable to build Organization tree. Contact Administrator.", Type.ERROR_MESSAGE);
}
}
public static HierarchicalContainer createTreeContent(List oTrees)
throws SystemException, PortalException {
HierarchicalContainer container = new HierarchicalContainer();
container.addContainerProperty("name", String.class, "");
new Object() {
@SuppressWarnings("unchecked")
public void put(List data, HierarchicalContainer container)
throws SystemException, PortalException {
for (Organization o : data) {
long orgId = o.getOrganizationId();
if (!container.containsId(orgId)) {
container.addItem(orgId);
container.getItem(orgId).getItemProperty("name").setValue(o.getName());
if (!o.hasSuborganizations()) {
container.setChildrenAllowed(orgId, false);
}
else {
container.setChildrenAllowed(orgId, true);
}
if (o.isRoot()) {
container.setParent(orgId, null);
}
else {
if (!container.containsId(o.getParentOrganizationId())) {
List sub = new ArrayList();
sub.add(o.getParentOrganization());
put(sub, container);
}
container.setParent(orgId, (Object) o.getParentOrganizationId());
}
}
}
}
}.put(oTrees, container);
return container;
}
....
Below is the css used
[source,scss]
....
.v-tree-node-caption-disabled {
color: black;
font-style: italic;
//border-style:solid;
//border-width:1px;
}
.v-tree-checkboxed .v-tree-node-caption-unchecked div span {
background: url("images/unchecked.png") no-repeat;
padding-left: 24px;
//border-style:solid;
//border-width:1px;
}
.v-tree-checkboxed .v-tree-node-caption-checked div span {
background: url("images/checked.png") no-repeat;
padding-left: 24px;
//border-style:solid;
//border-width:1px;
}
....
|
