Java tutorial
/* * Copyright 2011 Amazon Technologies, Inc. * * 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://aws.amazon.com/apache2.0 * * This file 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 com.amazonaws.eclipse.elasticbeanstalk; import java.util.List; import org.eclipse.debug.core.ILaunchManager; import org.eclipse.jface.dialogs.IDialogConstants; import org.eclipse.jface.dialogs.MessageDialog; import org.eclipse.jface.layout.GridDataFactory; 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.layout.GridData; import org.eclipse.swt.layout.GridLayout; 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 com.amazonaws.AmazonServiceException; import com.amazonaws.AmazonWebServiceClient; import com.amazonaws.eclipse.core.AwsToolkitCore; /** * Dialog to collect information about a deployment prior to its creation. */ public class DeploymentInformationDialog extends MessageDialog { private final boolean enableDebugging; private final boolean warnAboutIngress; private final Environment environment; private final String launchMode; private Text debugPortText; private String debugPort = ""; private String debugInstanceId = ""; private String versionLabel = ""; String getDebugInstanceId() { return debugInstanceId; } String getVersionLabel() { return versionLabel; } String getDebugPort() { return debugPort; } public DeploymentInformationDialog(Shell parentShell, Environment environment, String launchMode, boolean enableDebugging, boolean warnAboutIngress) { super(parentShell, "Publishing to AWS Elastic Beanstalk", AwsToolkitCore.getDefault().getImageRegistry().get(AwsToolkitCore.IMAGE_AWS_ICON), "Configure your environment deployment options", MessageDialog.NONE, new String[] { IDialogConstants.OK_LABEL, IDialogConstants.CANCEL_LABEL }, 0); this.enableDebugging = enableDebugging; this.warnAboutIngress = warnAboutIngress; this.environment = environment; this.launchMode = launchMode; this.versionLabel = "v" + System.currentTimeMillis(); } @Override protected Control createCustomArea(Composite parent) { Composite composite = parent; GridLayout layout = new GridLayout(2, false); layout.marginWidth = 0; composite.setLayout(layout); createVersionTextBox(composite); if (enableDebugging) createDebugPortTextBox(parent); if (launchMode.equals(ILaunchManager.DEBUG_MODE)) createInstanceSelectionCombo(parent); if (warnAboutIngress) createIngressWarning(parent); createDurationLabel(composite); composite.pack(true); return composite; } /** * Creates a combo selection box to choose which EC2 instance to connect to, * if there's more than one. */ private void createInstanceSelectionCombo(Composite parent) { try { final List<String> ec2InstanceIds = environment.getEC2InstanceIds(); if (ec2InstanceIds.size() < 2) { return; } debugInstanceId = ec2InstanceIds.get(0); Label label = new Label(parent, SWT.None); label.setText("Connect remote debugger to instance: "); final Combo combo = new Combo(parent, SWT.READ_ONLY); combo.setItems(ec2InstanceIds.toArray(new String[ec2InstanceIds.size()])); combo.select(0); combo.addSelectionListener(new SelectionAdapter() { @Override public void widgetSelected(SelectionEvent e) { debugInstanceId = ec2InstanceIds.get(combo.getSelectionIndex()); } }); GridDataFactory.fillDefaults().grab(true, false).applyTo(combo); } catch (AmazonServiceException ignored) { return; } } @Override protected void createButtonsForButtonBar(Composite parent) { super.createButtonsForButtonBar(parent); validate(); } private void validate() { if (versionLabel.length() == 0) { getButton(0).setEnabled(false); return; } if (enableDebugging) { if (debugPort.length() == 0) { getButton(0).setEnabled(false); return; } try { Integer.parseInt(debugPort); } catch (NumberFormatException e) { getButton(0).setEnabled(false); } } getButton(0).setEnabled(true); } private void createVersionTextBox(Composite composite) { Label versionLabelLabel = new Label(composite, SWT.NONE); versionLabelLabel.setText("Version Label:"); final Text versionLabelText = new Text(composite, SWT.BORDER); versionLabelText.setText(versionLabel); versionLabelText.setLayoutData(new GridData(SWT.FILL, SWT.CENTER, true, true)); versionLabelText.addModifyListener(new ModifyListener() { public void modifyText(ModifyEvent e) { versionLabel = versionLabelText.getText(); validate(); } }); } private void createDebugPortTextBox(Composite parent) { Label chooseADebugPort = new Label(parent, SWT.READ_ONLY); chooseADebugPort.setText("Remote debugging port:"); debugPortText = new Text(parent, SWT.BORDER); debugPortText.addModifyListener(new ModifyListener() { public void modifyText(ModifyEvent e) { debugPort = debugPortText.getText(); validate(); } }); } private void createIngressWarning(Composite parent) { Label ingressWarning = new Label(parent, SWT.READ_ONLY | SWT.WRAP); ingressWarning.setText("Please note: to connect the remote debugger, " + "the debug port will be opened for TCP ingress " + "on your EC2 security group."); GridDataFactory.fillDefaults().align(SWT.FILL, SWT.TOP).span(2, 1).applyTo(ingressWarning); } private void createDurationLabel(Composite composite) { final Label info = new Label(composite, SWT.READ_ONLY | SWT.WRAP); info.setText("Launching a new environment may take several minutes. " + "To monitor its progress, check the Progress View."); GridData gridData = new GridData(SWT.FILL, SWT.CENTER, true, true); gridData.horizontalSpan = 2; gridData.widthHint = 300; info.setLayoutData(gridData); } }