com.izforge.izpack.panels.userinput.console.ConsoleInputField Maven / Gradle / Ivy
/*
* IzPack - Copyright 2001-2012 Julien Ponge, All Rights Reserved.
*
* http://izpack.org/
* http://izpack.codehaus.org/
*
* Copyright 2012 Tim Anderson
*
* 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 com.izforge.izpack.panels.userinput.console;
import com.izforge.izpack.api.handler.Prompt;
import com.izforge.izpack.panels.userinput.field.Field;
import com.izforge.izpack.panels.userinput.field.ValidationStatus;
import com.izforge.izpack.util.Console;
/**
* A field which accepts string input.
*
* @author Tim Anderson
*/
public abstract class ConsoleInputField extends ConsoleField
{
/**
* Constructs a {@code ConsoleInputField}.
*
* @param field the field
* @param console the console
* @param prompt the prompt
*/
public ConsoleInputField(Field field, Console console, Prompt prompt)
{
super(field, console, prompt);
}
/**
* Displays the field.
*
* For fields that update variables, this collects input and validates it.
*
* @return {@code true} if the field was displayed and validated successfully
*/
@Override
public boolean display()
{
boolean result = false;
printDescription();
Field field = getField();
String label = field.getLabel(true);
String initialValue = field.getInitialValue();
if (isReadonly())
{
println(label + " [" + initialValue + "] ");
field.setValue(initialValue);
return true;
}
else
{
if (initialValue == null)
{
initialValue = "";
}
String value = getConsole().prompt(label + " [" + initialValue + "] ", initialValue);
if (value != null)
{
ValidationStatus status = validate(value);
if (!status.isValid())
{
error(status.getMessage());
}
else
{
field.setValue(value);
result = true;
}
}
}
return result;
}
/**
* Validates a value.
*
* @param value the value to validate
* @return the validation status
*/
protected ValidationStatus validate(String value)
{
return getField().validate(value);
}
}