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Groovy: A powerful, dynamic language for the JVM
/**
* 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 groovy.ui;
import groovy.lang.GroovyShell;
import java.awt.Color;
import javax.swing.JTextPane;
import javax.swing.text.Style;
import javax.swing.text.StyleConstants;
import javax.swing.text.StyleContext;
import javax.swing.text.StyledDocument;
/**
* Base class for console
*
* @author James Strachan
*/
public abstract class ConsoleSupport {
Style promptStyle;
Style commandStyle;
Style outputStyle;
private GroovyShell shell;
int counter;
protected void addStylesToDocument(JTextPane outputArea) {
StyledDocument doc = outputArea.getStyledDocument();
Style def = StyleContext.getDefaultStyleContext().getStyle(StyleContext.DEFAULT_STYLE);
Style regular = doc.addStyle("regular", def);
StyleConstants.setFontFamily(def, "Monospaced");
promptStyle = doc.addStyle("prompt", regular);
StyleConstants.setForeground(promptStyle, Color.BLUE);
commandStyle = doc.addStyle("command", regular);
StyleConstants.setForeground(commandStyle, Color.MAGENTA);
outputStyle = doc.addStyle("output", regular);
StyleConstants.setBold(outputStyle, true);
}
public Style getCommandStyle() {
return commandStyle;
}
public Style getOutputStyle() {
return outputStyle;
}
public Style getPromptStyle() {
return promptStyle;
}
public GroovyShell getShell() {
if (shell == null) {
shell = new GroovyShell();
}
return shell;
}
protected Object evaluate(String text) {
String name = "Script" + counter++;
try {
return getShell().evaluate(text, name);
}
catch (Exception e) {
handleException(text, e);
return null;
}
}
protected abstract void handleException(String text, Exception e);
}