001 /*
002 $Id: ConsoleSupport.java,v 1.4 2005/01/28 09:58:06 dierk Exp $
003
004 Copyright 2003 (C) James Strachan and Bob Mcwhirter. All Rights Reserved.
005
006 Redistribution and use of this software and associated documentation
007 ("Software"), with or without modification, are permitted provided
008 that the following conditions are met:
009
010 1. Redistributions of source code must retain copyright
011 statements and notices. Redistributions must also contain a
012 copy of this document.
013
014 2. Redistributions in binary form must reproduce the
015 above copyright notice, this list of conditions and the
016 following disclaimer in the documentation and/or other
017 materials provided with the distribution.
018
019 3. The name "groovy" must not be used to endorse or promote
020 products derived from this Software without prior written
021 permission of The Codehaus. For written permission,
022 please contact info@codehaus.org.
023
024 4. Products derived from this Software may not be called "groovy"
025 nor may "groovy" appear in their names without prior written
026 permission of The Codehaus. "groovy" is a registered
027 trademark of The Codehaus.
028
029 5. Due credit should be given to The Codehaus -
030 http://groovy.codehaus.org/
031
032 THIS SOFTWARE IS PROVIDED BY THE CODEHAUS AND CONTRIBUTORS
033 ``AS IS'' AND ANY EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT
034 NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
035 FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL
036 THE CODEHAUS OR ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
037 INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
038 (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
039 SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
040 HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
041 STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
042 ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
043 OF THE POSSIBILITY OF SUCH DAMAGE.
044
045 */
046 package groovy.ui;
047
048 import groovy.lang.GroovyShell;
049
050 import java.awt.Color;
051
052 import javax.swing.JTextPane;
053 import javax.swing.text.Style;
054 import javax.swing.text.StyleConstants;
055 import javax.swing.text.StyleContext;
056 import javax.swing.text.StyledDocument;
057
058 /**
059 * Base class for console
060 *
061 * @author <a href="mailto:james@coredevelopers.net">James Strachan</a>
062 * @version $Revision: 1.4 $
063 */
064 public abstract class ConsoleSupport {
065
066 Style promptStyle;
067 Style commandStyle;
068 Style outputStyle;
069 private GroovyShell shell;
070 private int counter;
071
072 protected void addStylesToDocument(JTextPane outputArea) {
073 StyledDocument doc = outputArea.getStyledDocument();
074
075 Style def = StyleContext.getDefaultStyleContext().getStyle(StyleContext.DEFAULT_STYLE);
076
077 Style regular = doc.addStyle("regular", def);
078 StyleConstants.setFontFamily(def, "Monospaced");
079
080 promptStyle = doc.addStyle("prompt", regular);
081 StyleConstants.setForeground(promptStyle, Color.BLUE);
082
083 commandStyle = doc.addStyle("command", regular);
084 StyleConstants.setForeground(commandStyle, Color.MAGENTA);
085
086 outputStyle = doc.addStyle("output", regular);
087 StyleConstants.setBold(outputStyle, true);
088 }
089
090 public Style getCommandStyle() {
091 return commandStyle;
092 }
093
094 public Style getOutputStyle() {
095 return outputStyle;
096 }
097
098 public Style getPromptStyle() {
099 return promptStyle;
100 }
101
102 public GroovyShell getShell() {
103 return shell;
104 }
105
106 protected Object evaluate(String text) {
107 System.out.println("Evaluating: " + text);
108
109 if (shell == null) {
110 shell = new GroovyShell();
111 }
112
113 String name = "Script" + counter++;
114 try {
115 return shell.evaluate(text, name);
116 }
117 catch (Exception e) {
118 handleException(text, e);
119 return null;
120 }
121 }
122
123 protected abstract void handleException(String text, Exception e);
124 }