| /* |
| * Licensed to the Apache Software Foundation (ASF) under one |
| * or more contributor license agreements. See the NOTICE file |
| * distributed with this work for additional information |
| * regarding copyright ownership. The ASF licenses this file |
| * to you 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 freemarker.core; |
| |
| import java.util.Enumeration; |
| import java.util.HashMap; |
| import java.util.Map; |
| |
| import javax.swing.JTree; |
| import javax.swing.tree.DefaultTreeModel; |
| import javax.swing.tree.TreeNode; |
| |
| import freemarker.template.Template; |
| |
| /** |
| * Allows exposure of a FreeMarker template's AST as a Swing tree. |
| * |
| * @deprecated Will be removed, as Swing classes aren't accessible on Google App Engine. |
| */ |
| @Deprecated |
| public class FreeMarkerTree extends JTree { |
| private static final long serialVersionUID = 1L; |
| |
| private final Map nodeMap = new HashMap(); |
| |
| public FreeMarkerTree(Template template) { |
| setTemplate(template); |
| } |
| |
| private TreeNode getNode(TemplateElement element) { |
| TreeNode n = (TreeNode) nodeMap.get(element); |
| if (n != null) { |
| return n; |
| } |
| n = new TemplateElementTreeNode(element); |
| nodeMap.put(element, n); |
| return n; |
| } |
| |
| public void setTemplate(Template template) { |
| this.setModel(new DefaultTreeModel(getNode(template.getRootTreeNode()))); |
| this.invalidate(); |
| } |
| |
| @Override |
| public String convertValueToText(Object value, boolean selected, |
| boolean expanded, boolean leaf, int row, |
| boolean hasFocus) { |
| if (value instanceof TemplateElementTreeNode) { |
| return ((TemplateElementTreeNode) value).element.getDescription(); |
| } |
| return value.toString(); |
| } |
| |
| private class TemplateElementTreeNode implements TreeNode { |
| private final TemplateElement element; |
| |
| TemplateElementTreeNode(TemplateElement element) { |
| this.element = element; |
| } |
| |
| @Override |
| public Enumeration children() { |
| final Enumeration e = element.children(); |
| return new Enumeration() { |
| @Override |
| public boolean hasMoreElements() { |
| return e.hasMoreElements(); |
| } |
| @Override |
| public Object nextElement() { |
| return getNode((TemplateElement) e.nextElement()); |
| } |
| }; |
| } |
| |
| @Override |
| public boolean getAllowsChildren() { |
| return element.getAllowsChildren(); |
| } |
| |
| @Override |
| public TreeNode getChildAt(int childIndex) { |
| return getNode(element.getChildAt(childIndex)); |
| } |
| |
| @Override |
| public int getChildCount() { |
| return element.getChildCount(); |
| } |
| |
| @Override |
| public int getIndex(TreeNode node) { |
| return element.getIndex(((TemplateElementTreeNode) node).element); |
| } |
| |
| @Override |
| public TreeNode getParent() { |
| return getNode(element.getParentElement()); |
| } |
| |
| @Override |
| public boolean isLeaf() { |
| return element.isLeaf(); |
| } |
| |
| |
| } |
| } |