content: /*
   * 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 org.apache.chemistry.opencmis.workbench.swing;
  
  import static org.apache.chemistry.opencmis.commons.impl.CollectionsHelper.isNotEmpty;
  import static org.apache.chemistry.opencmis.commons.impl.CollectionsHelper.isNullOrEmpty;
  
  import java.util.List;
  
  import javax.swing.Icon;
  import javax.swing.tree.DefaultMutableTreeNode;
  
  import org.apache.chemistry.opencmis.commons.data.CmisExtensionElement;
  import org.apache.chemistry.opencmis.workbench.ClientHelper;
  import org.apache.chemistry.opencmis.workbench.icons.ExtensionIcon;
  
  public class ExtensionsTree extends InfoTree<List<CmisExtensionElement>> {
  
      private static final long serialVersionUID = 1L;
  
      private static final Icon EXTENSION_ICON = new ExtensionIcon(ClientHelper.OBJECT_ICON_SIZE,
              ClientHelper.OBJECT_ICON_SIZE);
  
      public ExtensionsTree() {
          super();
      }
  
      public ExtensionsTree(final List<CmisExtensionElement> extensions) {
          super(extensions);
      }
  
      @Override
      protected void buildTree(DefaultMutableTreeNode parent, List<CmisExtensionElement> extensions) {
          if (isNullOrEmpty(extensions)) {
              return;
          }
  
          for (CmisExtensionElement ext : extensions) {
              DefaultMutableTreeNode node = new DefaultMutableTreeNode(new ExtensionNode(ext));
              parent.add(node);
  
              if (isNotEmpty(ext.getChildren())) {
                  buildTree(node, ext.getChildren());
              }
          }
      }
  
      @Override
      protected Icon getIcon() {
          return EXTENSION_ICON;
      }
  
      private static class ExtensionNode {
          private final CmisExtensionElement extension;
  
          public ExtensionNode(CmisExtensionElement extension) {
              this.extension = extension;
          }
  
          @Override
          public String toString() {
              return (extension.getNamespace() == null ? "" : "{" + extension.getNamespace() + "}") + extension.getName()
                      + (!extension.getAttributes().isEmpty() ? " " + extension.getAttributes() : "")
                      + (extension.getChildren().isEmpty() ? ": " + extension.getValue() : "");
          }
      }
  }
  