Java tutorial
/* * Copyright (c) 2010, SQL Power Group Inc. * * This file is part of SQL Power Library. * * SQL Power Library is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by * the Free Software Foundation; either version 3 of the License, or * (at your option) any later version. * * SQL Power Library 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 General Public License for more details. * * You should have received a copy of the GNU General Public License * along with this program. If not, see <http://www.gnu.org/licenses/>. */ package ca.sqlpower.swingui.enterprise.client; import java.awt.Component; import java.net.URI; import java.net.URISyntaxException; import javax.swing.JButton; import javax.swing.JComponent; import javax.swing.JOptionPane; import javax.swing.JPanel; import javax.swing.JPasswordField; import javax.swing.JTextField; import ca.sqlpower.enterprise.client.ConnectionTestAction; import ca.sqlpower.enterprise.client.SPServerInfo; import ca.sqlpower.swingui.DataEntryPanel; import ca.sqlpower.util.Version; import com.jgoodies.forms.builder.DefaultFormBuilder; import com.jgoodies.forms.layout.FormLayout; /** * Creates a panel for setting the properties of a SPServerInfo. Since * instances of SPServerInfo are not mutable, calling applyChanges() will not * modify the original SPServerInfo object provided in the constructor. You * must obtain a new SPServerInfo object by calling getServerInfo(). */ public class SPServerInfoPanel implements DataEntryPanel { private final Component dialogOwner; private final JPanel panel; private JTextField name; private JTextField host; private JTextField port; private JTextField path; private JTextField username; private JPasswordField password; private JButton testButton; /** * The version of this client to compare to each server version to determine compatibility */ private final Version clientVersion; private final boolean passwordAllowed; private final String defaultScheme; /** * Create a {@link SPServerInfoPanel} populated with the given default * settings * * @param dialogOwner * The parent {@link Component} for the dialog containing this * {@link SPServerInfoPanel} * @param clientVersion * The version of the client to be used to determine * compatibility with the server * @param defaultSettings * A {@link SPServerInfo} instance set with the default * configuration */ public SPServerInfoPanel(Component dialogOwner, Version clientVersion, SPServerInfo defaultSettings) { this.dialogOwner = dialogOwner; panel = buildUI(defaultSettings); defaultScheme = defaultSettings.getScheme(); passwordAllowed = defaultSettings.isPasswordAllowed(); this.clientVersion = clientVersion; } private JPanel buildUI(SPServerInfo si) { DefaultFormBuilder builder = new DefaultFormBuilder(new FormLayout("pref, 4dlu, max(100dlu; pref):grow")); //$NON-NLS-1$ builder.append(Messages.getString("SPServerInfoPanel.displayNameField"), //$NON-NLS-1$ name = new JTextField(si.getName())); builder.append(Messages.getString("SPServerInfoPanel.hostField"), //$NON-NLS-1$ host = new JTextField(si.getServerAddress())); builder.append(Messages.getString("SPServerInfoPanel.portField"), //$NON-NLS-1$ port = new JTextField(String.valueOf(si.getPort()))); builder.append(Messages.getString("SPServerInfoPanel.pathField"), path = new JTextField(si.getPath())); //$NON-NLS-1$ builder.append(Messages.getString("SPServerInfoPanel.usernameField"), //$NON-NLS-1$ username = new JTextField(si.getUsername())); if (si.isPasswordAllowed()) { builder.append(Messages.getString("SPServerInfoPanel.passwordField"), //$NON-NLS-1$ password = new JPasswordField(si.getPassword())); } builder.append(testButton = new JButton(Messages.getString("SPServerInfoPanel.testConnectionButton"))); //$NON-NLS-1$ builder.appendParagraphGapRow(); return builder.getPanel(); } public void setTestAction(ConnectionTestAction action) { testButton.setAction(action); } /** * Returns a new SPServerInfo object which has been configured based on the * settings currently in this panel's fields. */ public SPServerInfo getServerInfo() { // lookupServerInfo(false); TODO: re-enable/replace when connection testing is implemented int port = Integer.parseInt(this.port.getText()); SPServerInfo si; if (passwordAllowed) { si = new SPServerInfo(name.getText(), host.getText(), port, path.getText(), username.getText(), new String(password.getPassword())); } else { si = new SPServerInfo(defaultScheme, name.getText(), host.getText(), port, path.getText(), username.getText()); } return si; } public JComponent getPanel() { return panel; } /** * Checks fields for validity, but does not modify the SPServerInfo given in * the constructor (this is not possible because it's immutable). If any of * the fields contain inappropriate entries, the user will be told so in a * dialog. * * @return true if all the fields contain valid values; false if there are * invalid fields. */ public boolean applyChanges() { if (this.name.getText() == null || this.name.getText().equals("")) { //$NON-NLS-1$ JOptionPane.showMessageDialog(dialogOwner, Messages.getString("SPServerInfoPanel.giveConnectionName"), //$NON-NLS-1$ Messages.getString("SPServerInfoPanel.nameRequired"), JOptionPane.ERROR_MESSAGE); //$NON-NLS-1$ return false; } String port = this.port.getText(); try { Integer.parseInt(port); } catch (NumberFormatException ex) { JOptionPane.showMessageDialog(dialogOwner, Messages.getString("SPServerInfoPanel.portMustBeNumber"), //$NON-NLS-1$ Messages.getString("SPServerInfoPanel.invalidPortNumber"), JOptionPane.ERROR_MESSAGE); //$NON-NLS-1$ return false; } if (!this.path.getText().startsWith("/")) { //$NON-NLS-1$ this.path.setText("/".concat(this.path.getText() == null ? "" : this.path.getText())); //$NON-NLS-1$ //$NON-NLS-2$ } String path = this.path.getText(); if (path == null || path.length() < 2) { JOptionPane.showMessageDialog(dialogOwner, Messages.getString("SPServerInfoPanel.pathMustBeginWithSlash"), //$NON-NLS-1$ Messages.getString("SPServerInfoPanel.invalidSetting"), JOptionPane.ERROR_MESSAGE); //$NON-NLS-1$ return false; } if (this.host.getText().startsWith("http://")) { //$NON-NLS-1$ this.host.setText(this.host.getText().replace("http://", "")); //$NON-NLS-1$ //$NON-NLS-2$ } String host = this.host.getText(); try { new URI("http", null, host, Integer.parseInt(port), path, null, null); //$NON-NLS-1$ } catch (URISyntaxException e) { JOptionPane.showMessageDialog(dialogOwner, Messages.getString("SPServerInfoPanel.problemWithHostName"), //$NON-NLS-1$ "", JOptionPane.ERROR_MESSAGE); //$NON-NLS-1$ return false; } return true; } public void discardChanges() { // nothing to do } public boolean hasUnsavedChanges() { return true; } }