/**
* 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.zookeeper.inspector.gui.nodeviewer;
import java.awt.BorderLayout;
import java.awt.Color;
import java.awt.GridBagConstraints;
import java.awt.GridBagLayout;
import java.awt.Insets;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import java.util.concurrent.ExecutionException;
import javax.swing.JLabel;
import javax.swing.JPanel;
import javax.swing.JScrollPane;
import javax.swing.JTextField;
import javax.swing.SwingWorker;
import org.apache.zookeeper.data.Stat;
import org.apache.zookeeper.inspector.logger.LoggerFactory;
import org.apache.zookeeper.inspector.manager.ZooInspectorNodeManager;
/**
* A node viewer for displaying the meta data for the currently selected node.
* The meta data is essentially the information from the {@link Stat} for the
* node
*/
public class NodeViewerMetaData extends ZooInspectorNodeViewer {
private ZooInspectorNodeManager zooInspectorManager;
private final JPanel metaDataPanel;
private String selectedNode;
/**
*
*/
public NodeViewerMetaData() {
this.setLayout(new BorderLayout());
this.metaDataPanel = new JPanel();
this.metaDataPanel.setBackground(Color.WHITE);
JScrollPane scroller = new JScrollPane(this.metaDataPanel);
this.add(scroller, BorderLayout.CENTER);
}
/*
* (non-Javadoc)
*
* @see
* org.apache.zookeeper.inspector.gui.nodeviewer.ZooInspectorNodeViewer#
* getTitle()
*/
@Override
public String getTitle() {
return "Node Metadata";
}
/*
* (non-Javadoc)
*
* @see
* org.apache.zookeeper.inspector.gui.nodeviewer.ZooInspectorNodeViewer#
* nodeSelectionChanged(java.util.Set)
*/
@Override
public void nodeSelectionChanged(List<String> selectedNodes) {
this.metaDataPanel.removeAll();
if (selectedNodes.size() > 0) {
this.selectedNode = selectedNodes.get(0);
SwingWorker<Map<String, String>, Void> worker = new SwingWorker<Map<String, String>, Void>() {
@Override
protected Map<String, String> doInBackground() throws Exception {
return NodeViewerMetaData.this.zooInspectorManager
.getNodeMeta(NodeViewerMetaData.this.selectedNode);
}
@Override
protected void done() {
Map<String, String> data = null;
try {
data = get();
} catch (InterruptedException e) {
data = new HashMap<String, String>();
LoggerFactory.getLogger().error(
"Error retrieving meta data for node: "
+ NodeViewerMetaData.this.selectedNode,
e);
} catch (ExecutionException e) {
data = new HashMap<String, String>();
LoggerFactory.getLogger().error(
"Error retrieving meta data for node: "
+ NodeViewerMetaData.this.selectedNode,
e);
}
NodeViewerMetaData.this.metaDataPanel
.setLayout(new GridBagLayout());
JPanel infoPanel = new JPanel();
infoPanel.setBackground(Color.WHITE);
infoPanel.setLayout(new GridBagLayout());
int i = 0;
int rowPos = 0;
for (Map.Entry<String, String> entry : data.entrySet()) {
rowPos = 2 * i + 1;
JLabel label = new JLabel(entry.getKey());
JTextField text = new JTextField(entry.getValue());
text.setEditable(false);
GridBagConstraints c1 = new GridBagConstraints();
c1.gridx = 0;
c1.gridy = rowPos;
c1.gridwidth = 1;
c1.gridheight = 1;
c1.weightx = 0;
c1.weighty = 0;
c1.anchor = GridBagConstraints.WEST;
c1.fill = GridBagConstraints.HORIZONTAL;
c1.insets = new Insets(5, 5, 5, 5);
c1.ipadx = 0;
c1.ipady = 0;
infoPanel.add(label, c1);
GridBagConstraints c2 = new GridBagConstraints();
c2.gridx = 2;
c2.gridy = rowPos;
c2.gridwidth = 1;
c2.gridheight = 1;
c2.weightx = 0;
c2.weighty = 0;
c2.anchor = GridBagConstraints.WEST;
c2.fill = GridBagConstraints.HORIZONTAL;
c2.insets = new Insets(5, 5, 5, 5);
c2.ipadx = 0;
c2.ipady = 0;
infoPanel.add(text, c2);
i++;
}
GridBagConstraints c = new GridBagConstraints();
c.gridx = 1;
c.gridy = rowPos;
c.gridwidth = 1;
c.gridheight = 1;
c.weightx = 1;
c.weighty = 1;
c.anchor = GridBagConstraints.NORTHWEST;
c.fill = GridBagConstraints.NONE;
c.insets = new Insets(5, 5, 5, 5);
c.ipadx = 0;
c.ipady = 0;
NodeViewerMetaData.this.metaDataPanel.add(infoPanel, c);
NodeViewerMetaData.this.metaDataPanel.revalidate();
NodeViewerMetaData.this.metaDataPanel.repaint();
}
};
worker.execute();
}
}
/*
* (non-Javadoc)
*
* @see
* org.apache.zookeeper.inspector.gui.nodeviewer.ZooInspectorNodeViewer#
* setZooInspectorManager
* (org.apache.zookeeper.inspector.manager.ZooInspectorNodeManager)
*/
@Override
public void setZooInspectorManager(
ZooInspectorNodeManager zooInspectorManager) {
this.zooInspectorManager = zooInspectorManager;
}
}