Java tutorial
/******************************************************************************* * See the NOTICE file distributed with this work for additional information * regarding copyright ownership. * * 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 hr.fer.zemris.vhdllab.platform.gui.dialog; import hr.fer.zemris.vhdllab.platform.i18n.LocalizationSupport; import java.awt.Frame; import javax.swing.JOptionPane; import org.apache.commons.lang.StringUtils; import org.springframework.context.NoSuchMessageException; abstract class AbstractOptionPaneDialogManager extends LocalizationSupport implements DialogManager { private static final String DIALOG_MANAGER_SUFFIX = "DialogManager"; private static final String MESSAGE_CODE_PREFIX = "dialog."; private static final String MESSAGE_SUFFIX = ".message"; private static final String TITLE_SUFFIX = ".title"; @SuppressWarnings("unchecked") @Override public <T> T showDialog(Object... args) { String title = getTitle(args); String text = getText(args); int optionType = getOptionType(); int messageType = getMessageType(); Frame owner = getFrame(); Object[] options = getOptionsForType(optionType); int option = JOptionPane.showOptionDialog(owner, text, title, optionType, messageType, null, options, options[0]); return (T) evaluateOption(option); } protected String getText(Object[] args) { String code = getMessageCodeFromSimpleClassName() + MESSAGE_SUFFIX; return getMessage(code, args); } protected String getTitle(Object[] args) { String code = getMessageCodeFromSimpleClassName() + TITLE_SUFFIX; return getMessage(code, args); } protected abstract Object evaluateOption(int option); protected abstract int getOptionType(); protected abstract int getMessageType(); private Object[] getOptionsForType(int optionType) { switch (optionType) { case JOptionPane.DEFAULT_OPTION: return getOption("ok"); case JOptionPane.YES_NO_CANCEL_OPTION: return getOption("yes", "no", "cancel"); case JOptionPane.YES_NO_OPTION: return getOption("yes", "no"); case JOptionPane.OK_CANCEL_OPTION: return getOption("ok", "cancel"); default: throw new IllegalStateException("Unknown option: " + optionType); } } private String[] getOption(String... options) { String[] localized = new String[options.length]; for (int i = 0; i < options.length; i++) { try { localized[i] = getMessage(getMessageCodeFromSimpleClassName() + options[i], null); } catch (NoSuchMessageException e) { localized[i] = getMessage("dialog." + options[i], null); } } return localized; } @Override protected String alterSimpleClassName(String simpleClassName) { return StringUtils.removeEnd(simpleClassName, DIALOG_MANAGER_SUFFIX); } @Override protected String alterMessageCode(String code) { return MESSAGE_CODE_PREFIX + code; } }