Java tutorial
/******************************************************************************* * Copyright (c) 2015 Red Hat, Inc. * Distributed under license by Red Hat, Inc. All rights reserved. * This program is made available under the terms of the * Eclipse Public License v1.0 which accompanies this distribution, * and is available at http://www.eclipse.org/legal/epl-v10.html * * Contributors: * Red Hat, Inc. - initial API and implementation ******************************************************************************/ package org.jboss.tools.foundation.ui.credentials.internal; import java.util.Arrays; import org.eclipse.jface.dialogs.IDialogConstants; import org.eclipse.jface.dialogs.IMessageProvider; import org.eclipse.jface.dialogs.TitleAreaDialog; import org.eclipse.osgi.util.NLS; import org.eclipse.swt.SWT; import org.eclipse.swt.events.ModifyEvent; import org.eclipse.swt.events.ModifyListener; import org.eclipse.swt.events.SelectionAdapter; import org.eclipse.swt.events.SelectionEvent; import org.eclipse.swt.events.SelectionListener; import org.eclipse.swt.layout.FormLayout; import org.eclipse.swt.layout.GridData; import org.eclipse.swt.widgets.Button; import org.eclipse.swt.widgets.Combo; import org.eclipse.swt.widgets.Composite; import org.eclipse.swt.widgets.Control; import org.eclipse.swt.widgets.Label; import org.eclipse.swt.widgets.Shell; import org.eclipse.swt.widgets.Text; import org.jboss.tools.foundation.core.credentials.ICredentialDomain; import org.jboss.tools.foundation.core.credentials.ICredentialsModel; import org.jboss.tools.foundation.ui.util.FormDataUtility; public class NewCredentialUserDialog extends TitleAreaDialog { private ICredentialsModel model; private ICredentialDomain selectedDomain; private String user, pass; private String[] domainNames; private ICredentialDomain[] allDomains; private boolean freezeUser = false; private boolean freezeDomain = false; private boolean alwaysPrompt = false; /** * Open a new user dialog. The selected domain will be pre-selected, but not frozen. * * @param parentShell * @param model * @param selected */ public NewCredentialUserDialog(Shell parentShell, ICredentialsModel model, ICredentialDomain selected) { super(parentShell); this.model = model; this.selectedDomain = selected; if (selected != null) freezeDomain = true; } /** * Open a new user dialog. The selected domain and username will be frozen. * * @param parentShell * @param model * @param selected * @param user */ public NewCredentialUserDialog(Shell parentShell, ICredentialsModel model, ICredentialDomain selected, String user) { super(parentShell); this.model = model; this.selectedDomain = selected; this.user = user; freezeDomain = true; freezeUser = true; alwaysPrompt = model.credentialRequiresPrompt(selected, user); } @Override public void create() { super.create(); getButton(IDialogConstants.OK_ID).setEnabled(false); } protected void configureShell(Shell shell) { super.configureShell(shell); shell.setBounds(shell.getLocation().x, shell.getLocation().y, 550, 500); Shell s2 = shell.getParent().getShell(); if (s2 != null) shell.setLocation(s2.getLocation()); if (freezeUser) shell.setText(CredentialMessages.EditACredentialLabel); else shell.setText(CredentialMessages.AddACredentialLabel); } protected int getShellStyle() { int ret = super.getShellStyle(); return ret | SWT.RESIZE; } protected Control createDialogArea(Composite parent) { if (freezeUser) setTitle(CredentialMessages.EditACredentialLabel); else setTitle(CredentialMessages.AddACredentialLabel); Composite main = new Composite((Composite) super.createDialogArea(parent), SWT.NONE); main.setLayoutData(new GridData(GridData.FILL_BOTH)); main.setLayout(new FormLayout()); final Combo domains = new Combo(main, SWT.SINGLE | SWT.BORDER | SWT.READ_ONLY); Label l = new Label(main, SWT.NONE); l.setText(CredentialMessages.DomainLabel); Label separator = new Label(main, SWT.SEPARATOR | SWT.HORIZONTAL); allDomains = model.getDomains(); domainNames = new String[allDomains.length]; for (int i = 0; i < allDomains.length; i++) { domainNames[i] = allDomains[i].getName(); } domains.setItems(domainNames); if (selectedDomain != null) { int sIndex = Arrays.asList(allDomains).indexOf(selectedDomain); if (sIndex != -1) { domains.select(sIndex); } } Label nameLabel = new Label(main, SWT.None); nameLabel.setText(CredentialMessages.UsernameLabel); final Text nameText = new Text(main, SWT.SINGLE | SWT.BORDER); final Button promptBtn = new Button(main, SWT.CHECK); promptBtn.setText(CredentialMessages.AlwaysPromptForPasswordLabel); promptBtn.setSelection(alwaysPrompt); Label passLabel = new Label(main, SWT.None); passLabel.setText(CredentialMessages.PasswordLabel); final Text passText = new Text(main, SWT.SINGLE | SWT.BORDER); if (user != null) { nameText.setText(user); } final Button showPassword = new Button(main, SWT.CHECK); showPassword.setText(CredentialMessages.ShowPasswordLabel); class SL implements SelectionListener { @Override public void widgetSelected(SelectionEvent e) { passwordVisibility(); } @Override public void widgetDefaultSelected(SelectionEvent e) { passwordVisibility(); } protected void passwordVisibility() { boolean selected = showPassword.getSelection(); if (selected) { passText.setEchoChar('\0'); } else { passText.setEchoChar('*'); } } } SL sl = new SL(); showPassword.setSelection(false); passText.setEchoChar('*'); showPassword.addSelectionListener(sl); sl.passwordVisibility(); int rightMargin = -10; l.setLayoutData(new FormDataUtility().createFormData(0, 12, null, 0, 0, 10, null, 0)); domains.setLayoutData(new FormDataUtility().createFormData(0, 8, null, 0, 25, 0, 100, rightMargin)); separator.setLayoutData(new FormDataUtility().createFormData(l, 29, null, 0, 0, 10, 100, rightMargin)); nameLabel.setLayoutData(new FormDataUtility().createFormData(separator, 17, null, 0, 0, 10, null, 0)); nameText.setLayoutData( new FormDataUtility().createFormData(separator, 13, null, 0, 25, 0, 100, rightMargin)); promptBtn.setLayoutData( new FormDataUtility().createFormData(nameLabel, 21, null, 0, 0, 10, 100, rightMargin)); passLabel.setLayoutData(new FormDataUtility().createFormData(promptBtn, 15, null, 0, 0, 10, null, 0)); passText.setLayoutData( new FormDataUtility().createFormData(promptBtn, 11, null, 0, 25, 0, 100, rightMargin)); showPassword.setLayoutData( new FormDataUtility().createFormData(passText, 11, null, 0, passText, -140, 100, rightMargin)); nameText.addModifyListener(new ModifyListener() { public void modifyText(ModifyEvent e) { user = nameText.getText(); validate(); } }); promptBtn.addSelectionListener(new SelectionAdapter() { public void widgetSelected(SelectionEvent e) { boolean enabled = !promptBtn.getSelection(); passText.setEnabled(enabled); showPassword.setEnabled(enabled); alwaysPrompt = promptBtn.getSelection(); validate(); } }); passText.addModifyListener(new ModifyListener() { public void modifyText(ModifyEvent e) { pass = passText.getText(); validate(); } }); domains.addSelectionListener(new SelectionListener() { public void widgetSelected(SelectionEvent e) { int i = domains.getSelectionIndex(); if (i != -1) { selectedDomain = allDomains[i]; } validate(); } public void widgetDefaultSelected(SelectionEvent e) { } }); if (freezeDomain) { domains.setEnabled(false); } if (freezeUser) { nameText.setEnabled(false); } if (alwaysPrompt) { passText.setEnabled(false); } return main; } private void validate() { if (selectedDomain == null) { setMessage(CredentialMessages.SelectDomain, IMessageProvider.ERROR); getButton(IDialogConstants.OK_ID).setEnabled(false); return; } if (user == null || user.isEmpty()) { setMessage(CredentialMessages.UsernameCannotBeBlank, IMessageProvider.ERROR); getButton(IDialogConstants.OK_ID).setEnabled(false); return; } String[] names = selectedDomain.getUsernames(); if (!freezeUser && Arrays.asList(names).contains(user)) { setMessage(NLS.bind(CredentialMessages.UsernameAlreadyExists, user, selectedDomain.getName()), IMessageProvider.ERROR); getButton(IDialogConstants.OK_ID).setEnabled(false); return; } if (!alwaysPrompt && (pass == null || pass.isEmpty())) { setMessage(CredentialMessages.PasswordCannotBeBlank, IMessageProvider.ERROR); getButton(IDialogConstants.OK_ID).setEnabled(false); return; } setMessage(null, IMessageProvider.NONE); getButton(IDialogConstants.OK_ID).setEnabled(true); } public ICredentialDomain getDomain() { return selectedDomain; } public String getUser() { return user; } public boolean isAlwaysPrompt() { return alwaysPrompt; } public String getPass() { return pass; } }