Java tutorial
/***************************************************************************** * Copyright (c) 2008 g-Eclipse Consortium * All rights reserved. This program and the accompanying materials * are 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 * * Initial development of the original code was made for the * g-Eclipse project founded by European Union * project number: FP6-IST-034327 http://www.geclipse.eu/ * * Contributors: * Moritz Post - initial API and implementation *****************************************************************************/ package eu.geclipse.aws.ec2.ui.wizards; import java.net.URL; import org.eclipse.jface.resource.ImageDescriptor; import org.eclipse.jface.wizard.WizardPage; import org.eclipse.swt.SWT; import org.eclipse.swt.events.ModifyEvent; import org.eclipse.swt.events.ModifyListener; import org.eclipse.swt.layout.GridData; import org.eclipse.swt.layout.GridLayout; import org.eclipse.swt.widgets.Composite; import org.eclipse.swt.widgets.Group; import org.eclipse.swt.widgets.Label; import org.eclipse.swt.widgets.Text; import eu.geclipse.aws.ec2.ui.Messages; import eu.geclipse.aws.ec2.ui.internal.Activator; import eu.geclipse.aws.vo.AWSVirtualOrganization; import eu.geclipse.core.reporting.ProblemException; /** * The {@link WizardPage} for the {@link CreateSecurityGroupWizard}. It provides * the form elements to input the name and the description of the newly created * security group. * * @author Moritz Post */ public class CreateSecurityGroupWizardPage extends WizardPage { /** The id of this wizard page. */ private static final String WIZARD_PAGE_ID = "eu.geclipse.aws.ec2.ui.wizards.createSecurityGroupWizardPage"; //$NON-NLS-1$ /** The {@link Text} widget containing the name of the security group. */ private Text textName; /** The {@link Text} widget containing the description of the security group. */ private Text textDescription; /** * Creates a new {@link WizardPage} with the aws access id in the aws vo. * * @param awsVo the container of the aws access id */ public CreateSecurityGroupWizardPage(final AWSVirtualOrganization awsVo) { super(CreateSecurityGroupWizardPage.WIZARD_PAGE_ID, Messages.getString("CreateSecurityGroupWizardPage.page_title"), //$NON-NLS-1$ null); String awsAccessId = null; try { awsAccessId = awsVo.getProperties().getAwsAccessId(); setDescription(Messages.getString("CreateSecurityGroupWizardPage.page_description1") + awsAccessId //$NON-NLS-1$ + Messages.getString("CreateSecurityGroupWizardPage.page_description2")); //$NON-NLS-1$ } catch (ProblemException problemEx) { Activator.log("Could not read aws vo properties", problemEx); //$NON-NLS-1$ } URL imgUrl = Activator.getDefault().getBundle().getEntry("icons/wizban/security_wiz.gif"); //$NON-NLS-1$ setImageDescriptor(ImageDescriptor.createFromURL(imgUrl)); setPageComplete(false); } public void createControl(final Composite parent) { Composite mainComp = new Composite(parent, SWT.NONE); mainComp.setLayoutData(new GridData(SWT.FILL, SWT.CENTER, true, false)); mainComp.setLayout(new GridLayout(1, true)); Group group = new Group(mainComp, SWT.NONE); group.setLayoutData(new GridData(SWT.FILL, SWT.CENTER, true, false)); group.setLayout(new GridLayout(2, false)); group.setText(Messages.getString("CreateSecurityGroupWizardPage.group_security_group_title")); //$NON-NLS-1$ // name Label labelName = new Label(group, SWT.NONE); labelName.setLayoutData(new GridData(SWT.BEGINNING, SWT.CENTER, false, false)); labelName.setText(Messages.getString("CreateSecurityGroupWizardPage.label_name")); //$NON-NLS-1$ this.textName = new Text(group, SWT.SINGLE | SWT.LEAD | SWT.BORDER); this.textName.setLayoutData(new GridData(SWT.FILL, SWT.CENTER, true, false)); this.textName.addModifyListener(new ModifyListener() { public void modifyText(final ModifyEvent e) { validatePage(); } }); // description Label labelDescription = new Label(group, SWT.NONE); labelDescription.setLayoutData(new GridData(SWT.BEGINNING, SWT.CENTER, false, false)); labelDescription.setText(Messages.getString("CreateSecurityGroupWizardPage.label_description")); //$NON-NLS-1$ this.textDescription = new Text(group, SWT.SINGLE | SWT.LEAD | SWT.BORDER); this.textDescription.setLayoutData(new GridData(SWT.FILL, SWT.CENTER, true, false)); setControl(group); } /** * Validates the fields in the wizard pages form. * * @return <code>true</code> if the forms entries are valid or * <code>false</code> otherwise. */ private boolean validatePage() { String error = null; if (this.textName.getText().trim().length() == 0) { error = Messages.getString("CreateSecurityGroupWizardPage.error_security_group_requires_name"); //$NON-NLS-1$ } if (error != null) { setErrorMessage(error); setPageComplete(false); return false; } setErrorMessage(null); setPageComplete(true); return true; } /** * A getter for the security group name contained within the {@link #textName} * widget. The returned text is treated with {@link String#trim()}. * * @return the security group name or an empty {@link String} when no text has * been set */ public String getSecurityGroupName() { return this.textName.getText().trim(); } /** * A getter for the security group description contained within the * {@link #textName} widget. The returned text is treated with * {@link String#trim()}. * * @return the security group name or an empty {@link String} when no text has * been set */ public String getSecurityGroupDescription() { return this.textDescription.getText().trim(); } }