Java tutorial
/* * RapidMiner * * Copyright (C) 2001-2014 by RapidMiner and the contributors * * Complete list of developers available at our web site: * * http://rapidminer.com * * This program is free software: you can redistribute it and/or modify * it under the terms of the GNU Affero General Public License as published by * the Free Software Foundation, either version 3 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 Affero General Public License for more details. * * You should have received a copy of the GNU Affero General Public License * along with this program. If not, see http://www.gnu.org/licenses/. */ package com.rapidminer.repository.gui; import java.awt.Color; import java.awt.GridBagConstraints; import java.awt.GridBagLayout; import java.awt.Insets; import java.awt.event.ActionEvent; import java.awt.event.ActionListener; import java.io.File; import java.util.LinkedList; import java.util.List; import javax.swing.AbstractButton; import javax.swing.JButton; import javax.swing.JCheckBox; import javax.swing.JComponent; import javax.swing.JLabel; import javax.swing.JPanel; import javax.swing.JTextField; import javax.swing.event.DocumentEvent; import javax.swing.event.DocumentListener; import com.itextpdf.text.Font; import com.rapidminer.gui.tools.ResourceAction; import com.rapidminer.gui.tools.ResourceActionAdapter; import com.rapidminer.gui.tools.ResourceLabel; import com.rapidminer.gui.tools.SwingTools; import com.rapidminer.repository.Repository; import com.rapidminer.repository.RepositoryException; import com.rapidminer.repository.RepositoryLocation; import com.rapidminer.repository.RepositoryManager; import com.rapidminer.repository.local.LocalRepository; import com.rapidminer.tools.I18N; /** * @author Simon Fischer */ public class LocalRepositoryPanel extends JPanel implements RepositoryConfigurationPanel { private static final long serialVersionUID = 1L; private final JTextField fileField = new JTextField(30); private final JTextField aliasField = new JTextField("NewLocalRepository", 30); private final JCheckBox standardLocation = new JCheckBox( new ResourceActionAdapter("repositorydialog.use_standard_location")); private final JLabel errorLabel = new JLabel(" "); private JButton chooseFileButton; private JButton finishButton; /** The optional finish button will be disabled when invalid information is entered. */ public LocalRepositoryPanel(JButton finishButton, boolean isNew) { this.finishButton = finishButton; standardLocation.setSelected(isNew); errorLabel.setForeground(Color.red); errorLabel.setFont(errorLabel.getFont().deriveFont(Font.BOLD)); GridBagLayout gbl = new GridBagLayout(); setLayout(gbl); GridBagConstraints c = new GridBagConstraints(); c.anchor = GridBagConstraints.FIRST_LINE_START; c.weighty = 0; c.weightx = .5; c.insets = new Insets(4, 4, 4, 4); c.fill = GridBagConstraints.HORIZONTAL; // ALIAS c.gridwidth = 1; JLabel label = new ResourceLabel("repositorydialog.alias"); label.setLabelFor(aliasField); gbl.setConstraints(label, c); add(label); c.gridwidth = GridBagConstraints.REMAINDER; gbl.setConstraints(aliasField, c); add(aliasField); // URL c.gridwidth = 1; c.gridheight = 2; label = new ResourceLabel("repositorydialog.root_directory"); label.setLabelFor(fileField); gbl.setConstraints(label, c); add(label); if (isNew) { c.gridheight = 1; c.gridwidth = GridBagConstraints.REMAINDER; add(standardLocation, c); } c.gridwidth = GridBagConstraints.RELATIVE; gbl.setConstraints(fileField, c); add(fileField); c.gridwidth = GridBagConstraints.REMAINDER; chooseFileButton = new JButton(new ResourceAction(true, "choose_file") { private static final long serialVersionUID = 1L; @Override public void actionPerformed(ActionEvent e) { File file = SwingTools.chooseFile(LocalRepositoryPanel.this, null, true, true, (String) null, null); if (file != null) { fileField.setText(file.toString()); } } }); add(chooseFileButton, c); c.fill = GridBagConstraints.HORIZONTAL; c.gridwidth = GridBagConstraints.REMAINDER; add(errorLabel, c); JPanel dummy = new JPanel(); c.fill = GridBagConstraints.BOTH; c.weighty = 1; gbl.setConstraints(dummy, c); add(dummy); aliasField.selectAll(); fileField.selectAll(); aliasField.getDocument().addDocumentListener(new DocumentListener() { @Override public void removeUpdate(DocumentEvent e) { aliasUpdated(); } @Override public void insertUpdate(DocumentEvent e) { aliasUpdated(); } @Override public void changedUpdate(DocumentEvent e) { aliasUpdated(); } }); fileField.getDocument().addDocumentListener(new DocumentListener() { @Override public void removeUpdate(DocumentEvent e) { dumpSettingsCheck(); } @Override public void insertUpdate(DocumentEvent e) { dumpSettingsCheck(); } @Override public void changedUpdate(DocumentEvent e) { dumpSettingsCheck(); } }); standardLocation.addActionListener(new ActionListener() { @Override public void actionPerformed(ActionEvent e) { enableFileField(); aliasUpdated(); } }); enableFileField(); aliasUpdated(); } @Override public void makeRepository() throws RepositoryException { File file = new File(fileField.getText().trim()); file.mkdir(); String alias = aliasField.getText().trim(); if (alias.length() == 0) { alias = file.getName(); } checkConfiguration(file, alias); RepositoryManager.getInstance(null).addRepository(new LocalRepository(alias, file)); } @Override public void configureUIElementsFrom(Repository repository) { aliasField.setText(((LocalRepository) repository).getName()); fileField.setText(((LocalRepository) repository).getRoot().getAbsolutePath()); } @Override public boolean configure(Repository repository) { File file = new File(fileField.getText()); String alias = aliasField.getText(); try { // in case only the alias has changed the file stays the same if (((LocalRepository) repository).getFile().equals(file)) { file = null; } if (((LocalRepository) repository).getName().equals(alias)) { alias = null; } checkConfiguration(file, alias); if (alias != null) { ((LocalRepository) repository).rename(alias); } } catch (RepositoryException e) { SwingTools.showSimpleErrorMessage("cannot_create_repository", e); return false; } if (file != null) { ((LocalRepository) repository).setRoot(file); } return true; } @Override public JComponent getComponent() { return this; } /** Sets the folder based on the alias. * TODO: Enable/disable finish button for illegal values */ private void aliasUpdated() { if (standardLocation.isSelected()) { fileField.setText(LocalRepository.getDefaultRepositoryFolder(aliasField.getText()).toString()); } dumpSettingsCheck(); } /** Enables or disable the file field iff {@link #standardLocation} is deselected. */ private void enableFileField() { boolean enabled = !standardLocation.isSelected(); fileField.setEnabled(enabled); chooseFileButton.setEnabled(enabled); dumpSettingsCheck(); } private void dumpSettingsCheck() { String key = checkSettings(); if (key == null) { // TODO: enable ok button errorLabel.setText(" "); if (finishButton != null) { finishButton.setEnabled(true); } } else { // TODO: disable ok button errorLabel.setText(I18N.getMessage(I18N.getGUIBundle(), "gui.dialog.repositorydialog.error." + key)); if (finishButton != null) { finishButton.setEnabled(false); } } } /** Checks the current settings and returns an I18N key if settings are incorrect. */ private String checkSettings() { if (aliasField.getText().isEmpty()) { return "alias_cannot_be_empty"; } if (!RepositoryLocation.isNameValid(aliasField.getText())) { return "alias_invalid"; } if (fileField.getText().isEmpty()) { return "folder_cannot_be_empty"; } File file = new File(fileField.getText()); if (file.exists() && !file.isDirectory()) { return "root_is_not_a_directory"; } if (file.exists() && !file.canWrite()) { return "root_is_not_writable"; } while (!file.exists()) { file = file.getParentFile(); if (file == null) { return "cannot_determine_root"; } } if (!file.canWrite()) { return "cannot_create_root_folder"; } return null; } @Override public void setOkButton(JButton okButton) { this.finishButton = okButton; } @Override public List<AbstractButton> getAdditionalButtons() { return new LinkedList<AbstractButton>(); } /** * Throws a {@link RepositoryException} if the given configuration is invalid. * @param file * @param alias * @throws RepositoryException */ private void checkConfiguration(File file, String alias) throws RepositoryException { // make sure that it's not possible to create multiple repositories in the same location or with the same alias for (Repository repo : RepositoryManager.getInstance(null).getRepositories()) { if (repo instanceof LocalRepository) { if (((LocalRepository) repo).getRoot().equals(file)) { throw new RepositoryException(I18N.getMessage(I18N.getErrorBundle(), "repository.repository_creation_duplicate_location")); } } if (repo.getName().equals(alias)) { throw new RepositoryException( I18N.getMessage(I18N.getErrorBundle(), "repository.repository_creation_duplicate_alias")); } } } }