416 lines
10 KiB
Java
416 lines
10 KiB
Java
//
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// TextAreaWidget.java
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// guiserver
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//
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// Created by Lutz Mueller on 5/16/07.
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//
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//
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// Copyright (C) 2016 Lutz Mueller
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//
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// This program is free software: you can redistribute it and/or modify
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// it under the terms of the GNU General Public License as published by
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// the Free Software Foundation, either version 3 of the License, or
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// (at your option) any later version.
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//
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// This program is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU General Public License for more details.
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//
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// You should have received a copy of the GNU General Public License
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// along with this program. If not, see <http://www.gnu.org/licenses/>.
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//
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import java.awt.*;
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import java.awt.event.*;
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import java.awt.event.ActionEvent;
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import java.util.*;
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import java.io.*;
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import javax.swing.*;
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import javax.swing.event.*;
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import javax.swing.text.*;
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@SuppressWarnings("unchecked")
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public class TextAreaWidget extends aTextWidget {
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JTextArea textArea;
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int lastCharCode = 65535;
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int lastDot = 0;
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Process process = null;
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BufferedWriter stdOut;
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BufferedReader stdInput;
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BufferedReader stdError;
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String command = "";
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int historyIndex = 0;
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Vector history;
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String lastShellCommand;
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String lastShellArgs;
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String commandBatch = "";
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boolean isInBatch = false;
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public TextAreaWidget(StringTokenizer params)
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{
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id = params.nextToken();
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action = params.nextToken();
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textArea = new JTextArea();
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textArea.setFont(new Font("SansSerif", Font.PLAIN, 12));
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textArea.setLineWrap(true);
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textArea.setWrapStyleWord(true);
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areaScrollPane = new JScrollPane(textArea);
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areaScrollPane.setVerticalScrollBarPolicy(JScrollPane.VERTICAL_SCROLLBAR_AS_NEEDED);
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container = areaScrollPane;
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jcomponent = textArea;
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component = areaScrollPane;
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textcomp = textArea;
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isScrollable = true;
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if(params.hasMoreTokens())
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areaScrollPane.setPreferredSize(
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new Dimension(Integer.parseInt(params.nextToken()),Integer.parseInt(params.nextToken())));
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gsObject.widgets.put(id, this);
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KeyListener keyListener = new KeyAdapter() {
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public void keyPressed(KeyEvent e)
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{
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Character chr = new Character(e.getKeyChar());
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lastCharCode = chr.hashCode();
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if(process != null)
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{
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if(lastCharCode == 12) // formfeed Ctrl-L
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{
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textArea.setText("");
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lastDot = 0;
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try {
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stdOut.write(10);
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stdOut.flush();
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}
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catch (IOException ioex) { System.out.println("clear screen:" + ioex); };
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}
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}
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}
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};
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CaretListener caretListener = new CaretListener() {
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public void caretUpdate(CaretEvent ce)
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{
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int mark = ce.getMark();
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int dot = ce.getDot();
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guiserver.out.println("(" + action + " \"" + id + "\" " + lastCharCode + " " + dot + " " + mark + ")");
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guiserver.out.flush();
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lastCharCode = 65535;
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//System.out.println(":" + lastDot);
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}
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};
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textArea.addCaretListener(caretListener);
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textArea.addKeyListener(keyListener);
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}
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public void setTabSize(StringTokenizer tokens)
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{
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textArea.setTabSize(Integer.parseInt(tokens.nextToken()));
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}
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public void clearText(StringTokenizer params)
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{
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textcomp.setText("");
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lastCharCode = 65535;
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lastDot = 0;
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if(process != null)
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try {
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stdOut.write(10);
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stdOut.flush();
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}
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catch (IOException ioex) { System.out.println("clear screen:" + ioex); };
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}
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public void runShell(StringTokenizer tokens)
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{
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String command;
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String args;
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if(tokens == null)
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{
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command = lastShellCommand;
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args = lastShellArgs;
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}
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else
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{
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command = Base64Coder.decodeString(tokens.nextToken());
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lastShellCommand = command;
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args = Base64Coder.decodeString(tokens.nextToken());
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lastShellArgs = args;
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}
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history = new Vector();
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historyIndex = 0;
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commandBatch = "";
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isInBatch = false;
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if(process != null)
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process.destroy();
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InputMap im = textArea.getInputMap();
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ActionMap am = textArea.getActionMap();
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im.put(KeyStroke.getKeyStroke(KeyEvent.VK_UP, 0), "history-up");
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im.put(KeyStroke.getKeyStroke(KeyEvent.VK_P, InputEvent.CTRL_MASK), "history-up");
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am.put("history-up", new HistoryUpAction());
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im.put(KeyStroke.getKeyStroke(KeyEvent.VK_DOWN, 0), "history-down");
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im.put(KeyStroke.getKeyStroke(KeyEvent.VK_N, InputEvent.CTRL_MASK), "history-down");
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am.put("history-down", new HistoryDownAction());
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im.put(KeyStroke.getKeyStroke(KeyEvent.VK_ENTER, 0), "command");
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am.put("command", new CommandAction());
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im.put(KeyStroke.getKeyStroke(KeyEvent.VK_A, InputEvent.CTRL_MASK), "bol");
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im.put(KeyStroke.getKeyStroke(KeyEvent.VK_HOME, 0), "bol");
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am.put("bol", new BeginningOfLineAction());
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im.put(KeyStroke.getKeyStroke(KeyEvent.VK_E, InputEvent.CTRL_MASK), "eol");
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im.put(KeyStroke.getKeyStroke(KeyEvent.VK_END, 0), "eol");
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am.put("eol", new EndOfLineAction());
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textArea.setText("");
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lastCharCode = 65535;
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lastDot = 0;
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try { setupShell(command, args); }
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catch (IOException ioex) {
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ErrorDialog.show("run-shell", "Could not start " + command + " " + args);
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process = null;
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}
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}
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public void setupShell(String command, String args) throws IOException
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{
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String[] cmdArray = {"","","","","","","","","",""};
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cmdArray[0] = command;
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//System.out.println("--->" + command);
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String[] argsArray = args.split("\\s");
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for (int x = 0; x < argsArray.length; x++)
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{
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cmdArray[x + 1] = argsArray[x];
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//System.out.println(argsArray[x]);
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}
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process = Runtime.getRuntime().exec(cmdArray);
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if(guiserver.UTF8)
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{
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stdInput = new BufferedReader(new InputStreamReader(process.getInputStream(), "UTF8"));
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stdError = new BufferedReader( new InputStreamReader(process.getErrorStream(), "UTF8"));
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}
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else
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{
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stdInput = new BufferedReader(new InputStreamReader(process.getInputStream()));
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stdError = new BufferedReader( new InputStreamReader(process.getErrorStream()));
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}
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stdOut = new BufferedWriter( new OutputStreamWriter(process.getOutputStream()));
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new Thread(new stdinListener()).start();
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new Thread(new stderrorListener()).start();
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}
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public void destroyShell(StringTokenizer params)
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{
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if(process != null) process.destroy();
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process = null;
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stdOut = null;
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}
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public void evalShell(StringTokenizer params)
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{
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String command = Base64Coder.decodeString(params.nextToken());
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while(true)
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{
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if(process == null)
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{
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textArea.append("--- restarting shell ---");
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runShell(null);
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if(process == null) break;
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}
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else
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{
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try {
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textArea.append("\n");
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stdOut.write(command, 0, command.length());
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stdOut.flush();
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break;
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}
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catch (IOException ioex) {
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textArea.append("--- eval shell: must restart shell ---");
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process = null;
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};
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}
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}
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}
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class stdinListener implements Runnable
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{
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int len;
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char buff[];
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String str;
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String text;
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stdinListener()
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{
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buff = new char[512];
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}
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public void run()
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{
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try {
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while((len = stdInput.read(buff, 0, 512)) != -1)
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{
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str = new String(buff, 0, len);
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text = textArea.getText();
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if(text.length() > 100000)
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textArea.setText(text.substring(50000));
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textArea.append(str);
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lastDot = textArea.getText().length();
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textArea.setCaretPosition(lastDot);
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}
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}
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catch (IOException ioex) {};
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}
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}
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class stderrorListener implements Runnable
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{
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int len;
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char buff[];
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String str;
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String text;
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stderrorListener()
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{
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buff = new char[512];
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}
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public void run()
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{
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try {
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while((len = stdError.read(buff, 0, 512)) != -1)
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{
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str = new String(buff, 0, len);
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text = textArea.getText();
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if(text.length() > 100000)
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textArea.setText(text.substring(50000));
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textArea.append(str);
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lastDot = textArea.getText().length();
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textArea.setCaretPosition(lastDot);
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}
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}
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catch (IOException ioex) {};
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}
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}
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private class BeginningOfLineAction extends AbstractAction {
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public static final long serialVersionUID = 1L;
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public void actionPerformed(ActionEvent ev) {
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textArea.setCaretPosition(lastDot);
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}
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}
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private class EndOfLineAction extends AbstractAction {
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public static final long serialVersionUID = 1L;
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public void actionPerformed(ActionEvent ev) {
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textArea.setCaretPosition(textArea.getText().length());
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}
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}
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private class HistoryUpAction extends AbstractAction {
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public static final long serialVersionUID = 1L;
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public void actionPerformed(ActionEvent ev) {
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textArea.setCaretPosition(lastDot);
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textArea.moveCaretPosition(textArea.getText().length());
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textArea.cut();
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if(history.size() > 0)
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{
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textArea.append((String)history.elementAt(historyIndex));
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if(historyIndex < (history.size() - 1))
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historyIndex += 1;
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}
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}
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}
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private class HistoryDownAction extends AbstractAction {
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public static final long serialVersionUID = 1L;
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public void actionPerformed(ActionEvent ev) {
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textArea.setCaretPosition(lastDot);
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textArea.moveCaretPosition(textArea.getText().length());
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textArea.cut();
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if(history.size() > 0)
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{
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textArea.append((String)history.elementAt(historyIndex));
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if(historyIndex > 0)
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historyIndex -= 1;
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}
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}
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}
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private class CommandAction extends AbstractAction {
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public static final long serialVersionUID = 1L;
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public void actionPerformed(ActionEvent ev) {
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String text = textArea.getText();
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if(text.length() < lastDot) lastDot = text.length();
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text = text.substring(lastDot);
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if(guiserver.UTF8)
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try {
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text = new String(text.getBytes("UTF-8"));
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}
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catch (UnsupportedEncodingException e) {}
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command = text;
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if(command.equals("[cmd]"))
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isInBatch = true;
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textArea.append("\n");
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try {
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if(isInBatch == false)
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{
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stdOut.write(command, 0, command.length());
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stdOut.write(10);
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stdOut.flush();
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}
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if(command.length() > 0)
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{
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history.insertElementAt(new String(command), 0);
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}
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historyIndex = 0;
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}
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catch (IOException ioex) {
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textArea.append("--- cannot execute: restart shell ---");
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};
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if(command.endsWith("\n[/cmd]"))
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{
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isInBatch = false;
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try {
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stdOut.write(command, 0, command.length());
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stdOut.write(10);
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stdOut.flush();
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}
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catch (IOException ioex) {
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textArea.append("--- cannot execute command batch ---");
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};
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}
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}
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}
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}
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// eof //
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