| /* |
| * 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.felix.shell.gui.plugin; |
| |
| import java.awt.BorderLayout; |
| import java.awt.Component; |
| import java.awt.event.KeyAdapter; |
| import java.awt.event.KeyEvent; |
| import java.io.PrintStream; |
| |
| import javax.swing.JPanel; |
| import javax.swing.JTextField; |
| |
| import org.apache.felix.shell.ShellService; |
| import org.apache.felix.shell.gui.Plugin; |
| import org.osgi.framework.BundleContext; |
| import org.osgi.framework.ServiceReference; |
| |
| public class ShellPlugin extends JPanel implements Plugin |
| { |
| private BundleContext m_context = null; |
| private PrintStream m_out = null; |
| |
| private JTextField m_commandField = new JTextField(); |
| private String[] m_history = new String[25]; |
| private int m_historyCount = -1; |
| private int m_current = 0; // current history counter |
| |
| private ScrollableOutputArea m_soa = new ScrollableOutputArea(); |
| |
| // Plugin interface methods. |
| |
| public String getName() |
| { |
| return "Shell"; |
| } |
| |
| public Component getGUI() |
| { |
| return this; |
| } |
| |
| // Implementation. |
| |
| public ShellPlugin(BundleContext context) |
| { |
| m_context = context; |
| m_out = new PrintStream(new OutputAreaStream(m_soa)); |
| initialize(); |
| } |
| |
| private void initialize() |
| { |
| setLayout(new BorderLayout()); |
| m_commandField.addKeyListener(new KeyAdapter() { |
| public void keyPressed(KeyEvent event) |
| { |
| commandFieldKeyPressed(event); |
| } |
| }); |
| m_commandField.setFont(new java.awt.Font("Monospaced", 0, 12)); |
| add(m_commandField, BorderLayout.SOUTH); |
| add(m_soa, BorderLayout.CENTER); |
| } |
| |
| void processCommand(String line) |
| { |
| if (line == null) |
| { |
| return; |
| } |
| |
| line = line.trim(); |
| |
| if (line.length() == 0) |
| { |
| return; |
| } |
| |
| // Get shell service. |
| ServiceReference ref = m_context.getServiceReference( |
| org.apache.felix.shell.ShellService.class.getName()); |
| if (ref == null) |
| { |
| m_out.println("No shell service is available."); |
| return; |
| } |
| |
| ShellService shell = (ShellService) m_context.getService(ref); |
| |
| // Print the command line in the output window. |
| m_out.println("-> " + line); |
| |
| try { |
| shell.executeCommand(line, m_out, m_out); |
| } catch (Exception ex) { |
| m_out.println(ex.toString()); |
| ex.printStackTrace(m_out); |
| } |
| |
| m_context.ungetService(ref); |
| } |
| |
| private void addToHistory(String command) |
| { |
| m_historyCount++; |
| if (m_historyCount >= m_history.length) |
| { |
| m_historyCount = m_history.length - 1; |
| for (int i = 0; i < m_history.length - 1; i++) |
| { |
| m_history[i] = m_history[i + 1]; |
| } |
| } |
| m_history[m_historyCount] = new String(command); |
| } |
| |
| private String getFromHistory(int num) |
| { |
| if (num < 0) |
| { |
| return (""); |
| } |
| else if (num > m_historyCount) |
| { |
| return(""); |
| } |
| return m_history[num]; |
| } |
| |
| protected void commandFieldKeyPressed(KeyEvent event) |
| { |
| String command = null; |
| int c = event.getKeyCode(); |
| // Cursor up. |
| if (c == 38) |
| { |
| m_current--; |
| if (m_current < 0) |
| { |
| m_current = 0; |
| } |
| m_commandField.setText(getFromHistory(m_current)); |
| m_commandField.setCaretPosition(m_commandField.getText().length()); |
| } |
| // Cursor down. |
| else if (c == 40) |
| { |
| m_current++; |
| if (m_current > m_historyCount) |
| { |
| m_current = m_historyCount + 1; |
| } |
| m_commandField.setText(getFromHistory(m_current)); |
| m_commandField.setCaretPosition(m_commandField.getText().length()); |
| } |
| else if (c == 10) |
| { |
| command = m_commandField.getText(); |
| if (!command.equals("")) |
| { |
| addToHistory(command); |
| m_current = m_historyCount + 1; |
| processCommand(command); |
| } |
| m_commandField.setText(""); |
| } |
| } |
| } |