/*
* Copyright 2011 JBoss Inc
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.jbpm.formbuilder.client.tree;
import java.util.List;
import org.jbpm.formapi.client.form.FBCompositeItem;
import org.jbpm.formapi.client.form.FBFormItem;
import com.google.gwt.user.client.ui.ScrollPanel;
import com.google.gwt.user.client.ui.Tree;
import com.google.gwt.user.client.ui.TreeItem;
/**
* Tree view. Holds a tree structure representing layout objects
*/
public class TreeViewImpl extends ScrollPanel implements TreeView {
private Tree tree = new Tree();
public TreeViewImpl() {
tree.setSize("100%", "100%");
tree.addItem(new TreeElement());
setWidget(tree);
new TreePresenter(this);
}
public void clearItems() {
tree.clear();
tree.addItem(new TreeElement());
}
@Override
public void addFormItem(FBFormItem item, FBCompositeItem parent) {
TreeItem treeBranch = tree.getItem(0);
if (parent != null && parent instanceof FBFormItem) {
TreeItem treeBranch2 = getItem(treeBranch, (FBFormItem) parent);
if (treeBranch2 != null) {
treeBranch = treeBranch2;
}
}
if (parent != null && item != null) {
treeBranch.addItem(new TreeElement(item));
if (item instanceof FBCompositeItem) {
FBCompositeItem compItem = (FBCompositeItem) item;
List<FBFormItem> subItems = compItem.getItems();
if (subItems != null) {
for (FBFormItem subItem : subItems) {
if (subItem != null) {
addFormItem(subItem, compItem);
}
}
}
}
}
}
@Override
public void removeFormItem(FBFormItem item) {
TreeItem treeBranch = tree.getItem(0);
TreeItem treeBranch2 = getItem(treeBranch, item);
if (treeBranch2 != null) {
treeBranch = treeBranch2;
}
if (treeBranch.getParentItem() != null) {
treeBranch.getParentItem().removeItem(treeBranch);
}
}
private TreeItem getItem(TreeItem treeBranch, FBFormItem item) {
TreeItem retval = null;
for (int index = 0; retval == null && index < treeBranch.getChildCount(); index++) {
TreeItem treeItem = treeBranch.getChild(index);
TreeElement elem = (TreeElement) treeItem.getWidget();
if (elem.represents(item)) {
retval = treeItem;
break;
} else {
retval = getItem(treeItem, item);
}
}
return retval;
}
}