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    1   /*
    2    * Licensed to the Apache Software Foundation (ASF) under one or more
    3    * contributor license agreements.  See the NOTICE file distributed with
    4    * this work for additional information regarding copyright ownership.
    5    * The ASF licenses this file to You under the Apache License, Version 2.0
    6    * (the "License"); you may not use this file except in compliance with
    7    * the License.  You may obtain a copy of the License at
    8    *
    9    *      http://www.apache.org/licenses/LICENSE-2.0
    10   *
    11   * Unless required by applicable law or agreed to in writing, software
    12   * distributed under the License is distributed on an "AS IS" BASIS,
    13   * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
    14   * See the License for the specific language governing permissions and
    15   * limitations under the License.
    16   */
    17
    18  package org.apache.log4j.chainsaw.receivers;
    19
    20  import org.apache.log4j.chainsaw.Generator;
    21  import org.apache.log4j.chainsaw.icons.ChainsawIcons;
    22  import org.apache.log4j.chainsaw.icons.LevelIconFactory;
    23  import org.apache.log4j.plugins.Plugin;
    24  import org.apache.log4j.spi.Thresholdable;
    25
    26  import javax.swing.*;
    27  import javax.swing.tree.DefaultMutableTreeNode;
    28  import javax.swing.tree.DefaultTreeCellRenderer;
    29  import java.awt.*;
    30
    31
    32  /**
    33   * A TreeCellRenderer that can format the information of Receivers
    34   * and their children
    35   *
    36   * @author Paul Smith &lt;psmith@apache.org&gt;
    37   */
    38  public class ReceiverTreeCellRenderer extends DefaultTreeCellRenderer {
    39      private Icon rootIcon = new ImageIcon(ChainsawIcons.ANIM_NET_CONNECT);
    40      private JPanel panel = new JPanel();
    41      private JLabel levelLabel = new JLabel();
    42
    43      public ReceiverTreeCellRenderer() {
    44          super();
    45          BoxLayout layout = new BoxLayout(panel, BoxLayout.X_AXIS);
    46          panel.setLayout(layout);
    47          panel.setOpaque(false);
    48          panel.add(levelLabel);
    49          //set preferredsize to something wide
    50          setPreferredSize(new Dimension(200, 19));
    51          panel.add(this);
    52      }
    53
    54      public Component getTreeCellRendererComponent(
    55          JTree tree, Object value, boolean sel, boolean expanded, boolean leaf,
    56          int row, boolean focus) {
    57          super.getTreeCellRendererComponent(
    58              tree, value, sel, expanded, leaf, row, focus);
    59
    60          DefaultMutableTreeNode node = (DefaultMutableTreeNode) value;
    61          Object o = node.getUserObject();
    62          setText(o.toString());
    63
    64          String tooltip = "";
    65
    66          setIcon(null);
    67          if (
    68              o == ((ReceiversTreeModel) tree.getModel()).getRootNode().getUserObject()) {
    69              setText(o.toString());
    70          } else if (o instanceof String) {
    71              setText(o.toString());
    72              setIcon(null);
    73          } else if (o instanceof Plugin) {
    74              setText(((Plugin) o).getName());
    75          } else if (o instanceof Generator) {
    76              Generator generator = (Generator) o;
    77              setText(generator.getName());
    78              setIcon(ChainsawIcons.ICON_HELP);
    79          } else {
    80              setText("(Unknown Type) :: " + o);
    81          }
    82
    83          if (
    84              o == ((ReceiversTreeModel) tree.getModel()).getRootNode().getUserObject()) {
    85              setIcon(rootIcon);
    86          }
    87
    88          levelLabel.setText(null);
    89          levelLabel.setIcon(null);
    90
    91          if (o instanceof Thresholdable) {
    92              Thresholdable t = (Thresholdable) o;
    93
    94              if (t.getThreshold() != null) {
    95                  levelLabel.setIcon(
    96                      LevelIconFactory.getInstance().getLevelToIconMap().get(
    97                          t.getThreshold().toString()));
    98
    99                  if (levelLabel.getIcon() == null) {
    100                     levelLabel.setText(t.getThreshold().toString());
    101                 }
    102             }
    103         }
    104
    105         setToolTipText(tooltip);
    106
    107         return panel;
    108     }
    109 }