/*
* ClassOption.java
* Copyright (C) 2007 University of Waikato, Hamilton, New Zealand
* @author Richard Kirkby (rkirkby@cs.waikato.ac.nz)
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*/
package tr.gov.ulakbim.jDenetX.options;
import tr.gov.ulakbim.jDenetX.gui.ClassOptionEditComponent;
import tr.gov.ulakbim.jDenetX.tasks.Task;
import javax.swing.*;
import java.io.File;
public class ClassOption extends AbstractClassOption {
private static final long serialVersionUID = 1L;
public ClassOption(String name, char cliChar, String purpose,
Class<?> requiredType, String defaultCLIString) {
super(name, cliChar, purpose, requiredType, defaultCLIString);
}
public ClassOption(String name, char cliChar, String purpose,
Class<?> requiredType, String defaultCLIString, String nullString) {
super(name, cliChar, purpose, requiredType, defaultCLIString, nullString);
}
public String getValueAsCLIString() {
if ((this.currentValue == null) && (this.nullString != null)) {
return this.nullString;
}
return objectToCLIString(this.currentValue, this.requiredType);
}
public void setValueViaCLIString(String s) {
if ((this.nullString != null)
&& ((s == null) || (s.length() == 0) || s
.equals(this.nullString))) {
this.currentValue = null;
} else {
try {
this.currentValue = cliStringToObject(s, this.requiredType,
null);
} catch (Exception e) {
IllegalArgumentException iae = new IllegalArgumentException(
"Problems with option: " + getName());
iae.initCause(e);
throw iae;
}
}
}
public static String objectToCLIString(Object obj, Class<?> requiredType) {
if (obj == null) {
return "";
}
if (obj instanceof File) {
return (FILE_PREFIX_STRING + ((File) obj).getPath());
}
if (obj instanceof String) {
return (INMEM_PREFIX_STRING + obj);
}
String className = classToCLIString(obj.getClass(), requiredType);
if (obj instanceof OptionHandler) {
String subOptions = ((OptionHandler) obj).getOptions()
.getAsCLIString();
if (subOptions.length() > 0) {
return (className + " " + subOptions);
}
}
return className;
}
public static Object cliStringToObject(String cliString,
Class<?> requiredType, Option[] externalOptions) throws Exception {
if (cliString.startsWith(FILE_PREFIX_STRING)) {
return new File(cliString.substring(FILE_PREFIX_STRING.length()));
}
if (cliString.startsWith(INMEM_PREFIX_STRING)) {
return cliString.substring(INMEM_PREFIX_STRING.length());
}
cliString = cliString.trim();
int firstSpaceIndex = cliString.indexOf(' ', 0);
String className;
String classOptions;
if (firstSpaceIndex > 0) {
className = cliString.substring(0, firstSpaceIndex);
classOptions = cliString.substring(firstSpaceIndex + 1, cliString
.length());
classOptions = classOptions.trim();
} else {
className = cliString;
classOptions = "";
}
Class<?> classObject;
try {
classObject = Class.forName(className);
} catch (Throwable t1) {
try {
// try prepending default package
classObject = Class.forName(requiredType.getPackage().getName()
+ "." + className);
} catch (Throwable t2) {
try {
// try prepending task package
classObject = Class.forName(Task.class.getPackage()
.getName()
+ "." + className);
} catch (Throwable t3) {
throw new Exception("Class not found: " + className);
}
}
}
Object classInstance;
try {
classInstance = classObject.newInstance();
} catch (Exception ex) {
throw new Exception("Problem creating instance of class: "
+ className, ex);
}
if (requiredType.isInstance(classInstance)
|| ((classInstance instanceof Task) && requiredType
.isAssignableFrom(((Task) classInstance)
.getTaskResultType()))) {
Options options = new Options();
if (externalOptions != null) {
for (Option option : externalOptions) {
options.addOption(option);
}
}
if (classInstance instanceof OptionHandler) {
Option[] objectOptions = ((OptionHandler) classInstance)
.getOptions().getOptionArray();
for (Option option : objectOptions) {
options.addOption(option);
}
}
try {
options.setViaCLIString(classOptions);
} catch (Exception ex) {
throw new Exception("Problem with options to '"
+ className
+ "'."
+ "\n\nValid options for "
+ className
+ ":\n"
+ ((OptionHandler) classInstance).getOptions()
.getHelpString(), ex);
} finally {
options.removeAllOptions(); // clean up listener refs
}
} else {
throw new Exception("Class named '" + className
+ "' is not an instance of " + requiredType.getName() + ".");
}
return classInstance;
}
@Override
public JComponent getEditComponent() {
return new ClassOptionEditComponent(this);
}
}