/*
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* Copyright 2011-17 Fraunhofer ISE, energy & meteo Systems GmbH and other contributors
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*
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*/
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package org.openmuc.openiec61850.clientgui.databind;
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import java.nio.CharBuffer;
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import java.nio.charset.CharacterCodingException;
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import java.nio.charset.Charset;
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import java.nio.charset.CharsetEncoder;
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import org.openmuc.openiec61850.BdaType;
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import org.openmuc.openiec61850.BdaVisibleString;
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public class VisibleStringDataBind extends TextFieldDataBind<BdaVisibleString> {
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private static final Charset ASCII = Charset.forName("US-ASCII");
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public VisibleStringDataBind(BdaVisibleString data) {
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super(data, BdaType.VISIBLE_STRING, new AsciiFilter(data.getMaxLength()));
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}
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@Override
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protected void resetImpl() {
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inputField.setText(new String(data.getValue(), ASCII));
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}
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@Override
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protected void writeImpl() {
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data.setValue(ASCII.encode(inputField.getText()).array());
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}
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private static class AsciiFilter extends TextFieldDataBind.AbstractFilter {
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private final CharsetEncoder encoder = Charset.forName("US-ASCII").newEncoder();
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private final int maxBytes;
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public AsciiFilter(int maxBytes) {
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this.maxBytes = maxBytes;
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}
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@Override
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protected boolean test(String text) {
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try {
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byte[] codedString = encoder.encode(CharBuffer.wrap(text)).array();
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return codedString.length <= maxBytes;
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} catch (CharacterCodingException e) {
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return false;
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}
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}
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}
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}
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