source: other-projects/trunk/realistic-books/packages/AntInstaller/src/org/tp23/antinstaller/input/ExtValidatedTextInput.java@ 19253

/* 
 * Copyright 2005 Paul Hinds
 *
 * Licensed 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.tp23.antinstaller.input;



import org.tp23.antinstaller.InstallerContext;
import org.tp23.antinstaller.ValidationException;


/**
 *
 * <p>Free text input type with validation using a custon supplied class.</p>
 * This enable very coplext validation, for example, a class could be written
 * to validate a port number enterd by a user that tries to open a socket
 * on the port and returns false to the validate method if the socket is in use. 
 * @author Paul Hinds
 * @version $Id: ExtValidatedTextInput.java,v 1.2 2007/01/09 22:41:41 teknopaul Exp $
 */
public class ExtValidatedTextInput
    extends ValidatedTextInput{

    private String validationClass;
    private Validator validator;
    private Throwable throwable ;

    public ExtValidatedTextInput() {
    }

    public void setValue(String dir){
        setInputResult(dir);
    }
    public String getValidationClass() {
        return validationClass;
    }
    public void setValidationClass(String validationClass) {
        this.validationClass = validationClass;
        try {
            validator = (Validator)Class.forName(validationClass).newInstance();
        }
        catch (Exception ex) {
            throw new InputException("Invalid Class in ExtValidated text input");
        }
    }

    /**
     * Called to validate the user input
     */
    public boolean validate(InstallerContext ctx) throws ValidationException{
        String result = getInputResult();
        try{
            validator.validate(result,ctx);
            throwable = null;
            return true;
        }
        catch(Throwable t){
            throwable = t;
            return false;
        }
        
    }
    /**
     * @return Returns the validator.
     */
    public Validator getValidator() {
        return validator;
    }

    /**
     * Used by checkConfig to validate the configuration file.
     * Not used at runtime.
     * @return boolean
     */
    public boolean validateObject() {
        if(getDisplayText() == null){
            System.out.println("ExtValidated:displayText must be set");
            return false;
        }
        if(getProperty() == null){
            System.out.println("ExtValidated:property must be set");
            return false;
        }
        if(getValidationClass() == null){
            System.out.println("ExtValidated:validationClass must be set");
            return false;
        }
        return true;
    }
    /**
     * @return Returns the throwable.
     */
    public Throwable getThrowable() {
        return throwable;
    }
}