Java tutorial
/* * Copyright IBM Corp. 2015, 2016 * * 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://www.apache.org/licenses/LICENSE-2.0 * * Unless required by applicable law or agreed to in writing, software * distributed under the License 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.ibm.xsp.extlib.designer.bluemix.wizard; import static com.ibm.xsp.extlib.designer.bluemix.preference.PreferenceKeys.KEY_BLUEMIX_SERVER_URL; import java.net.URI; import java.util.ArrayList; import java.util.List; import org.cloudfoundry.client.lib.CloudFoundryClient; import org.cloudfoundry.client.lib.domain.CloudApplication; import org.cloudfoundry.client.lib.domain.CloudDomain; import org.eclipse.core.runtime.IProgressMonitor; import org.eclipse.jface.operation.IRunnableWithProgress; import org.eclipse.jface.viewers.ArrayContentProvider; import org.eclipse.jface.viewers.ColumnLabelProvider; import org.eclipse.jface.viewers.ColumnViewerToolTipSupport; import org.eclipse.jface.viewers.ISelectionChangedListener; import org.eclipse.jface.viewers.SelectionChangedEvent; import org.eclipse.jface.viewers.TableViewer; import org.eclipse.jface.viewers.TableViewerColumn; import org.eclipse.jface.window.ToolTip; import org.eclipse.swt.SWT; import org.eclipse.swt.events.ControlEvent; import org.eclipse.swt.events.ControlListener; import org.eclipse.swt.events.ModifyEvent; import org.eclipse.swt.events.ModifyListener; import org.eclipse.swt.events.SelectionEvent; import org.eclipse.swt.events.SelectionListener; import org.eclipse.swt.layout.GridLayout; import org.eclipse.swt.widgets.Button; import org.eclipse.swt.widgets.Composite; import org.eclipse.swt.widgets.Group; import org.eclipse.swt.widgets.Label; import org.eclipse.swt.widgets.Table; import org.eclipse.swt.widgets.Text; import com.ibm.commons.util.StringUtil; import com.ibm.xsp.extlib.designer.bluemix.BluemixLogger; import com.ibm.xsp.extlib.designer.bluemix.preference.PreferencePage; import com.ibm.xsp.extlib.designer.bluemix.util.BluemixUtil; import com.ibm.xsp.extlib.designer.tooling.utils.AbstractWizardPage; import com.ibm.xsp.extlib.designer.tooling.utils.WizardUtils; /** * @author Gary Marjoram * */ public class NameBluemixWizardPage extends AbstractWizardPage implements SelectionListener, ModifyListener, ControlListener, ISelectionChangedListener { private Text _nameText; private Text _hostText; private Label _domainLabel; private Button _newRadio; private Button _existingRadio; private TableViewer _appViewer; private Group _hostGroup; private CloudFoundryClient _clientCloudSpace; private List<CloudApplication> _applications; private String _defaultDomain; private String _org; private String _space; private String _warningMsg; protected NameBluemixWizardPage(String pageName) { super(pageName); } @Override protected String getPageTitle() { return "Application Name"; // $NLX-NameBluemixWizardPage.ApplicationName-1$ } @Override protected String getPageMsg() { return "Specify a Name and Host for your application."; // $NLX-NameBluemixWizardPage.SpecifyaNameandHostforyourapplica-1$ } @Override public void createControl(Composite parent) { super.createControl(parent); Composite container = new Composite(parent, SWT.NONE); GridLayout layout = WizardUtils.createGridLayout(1, 5); container.setLayout(layout); _newRadio = WizardUtils.createRadio(container, "Create a new application:", 1, this); // $NLX-NameBluemixWizardPage.Createanewapplication-1$ _newRadio.setSelection(true); _nameText = WizardUtils.createText(container, 1, 20); _nameText.addModifyListener(this); _existingRadio = WizardUtils.createRadio(container, "Overwrite an existing application:", 1, this); // $NLX-NameBluemixWizardPage.Overwriteanexistingapplication-1$ _appViewer = WizardUtils.createTableViewer(container, 1, 1, null, SWT.FULL_SELECTION | SWT.BORDER | SWT.V_SCROLL, 20); ColumnViewerToolTipSupport.enableFor(_appViewer, ToolTip.NO_RECREATE); _appViewer.getTable().setToolTipText("Choose application"); // $NLX-NameBluemixWizardPage.ChooseApplication-1$ _appViewer.getTable().setHeaderVisible(false); _appViewer.getTable().setLinesVisible(false); _appViewer.getTable().addControlListener(this); _appViewer.setContentProvider(new ArrayContentProvider()); _appViewer.addSelectionChangedListener(this); _appViewer.getTable().addSelectionListener(this); // Create the only column TableViewerColumn col = new TableViewerColumn(_appViewer, SWT.LEFT); col.getColumn().setResizable(false); col.setLabelProvider(new ColumnLabelProvider()); // Create Host Group _hostGroup = WizardUtils.createGroup(container, 3, 3); WizardUtils.createLabel(_hostGroup, "Host:", 1); // $NLX-NameBluemixWizardPage.Host-1$ _hostText = WizardUtils.createText(_hostGroup, 1, 0); _hostText.addModifyListener(this); _domainLabel = WizardUtils.createLabel(_hostGroup, "", 1); setControl(container); } @Override protected void initialisePageState() { _newRadio.setSelection(true); _existingRadio.setSelection(false); _nameText.setText(""); _hostText.setText(""); _domainLabel.setText("." + _defaultDomain); _hostGroup.layout(); if (_applications.size() == 0) { _existingRadio.setEnabled(false); } else { _existingRadio.setEnabled(true); } _appViewer.setInput(getApplications()); _appViewer.refresh(); _appViewer.getTable().select(0); showWarning(_warningMsg); } @Override public void widgetDefaultSelected(SelectionEvent event) { } @Override public void widgetSelected(SelectionEvent event) { if (event.widget == _appViewer.getTable()) { // User clicked on an item in the table - flip the radios _existingRadio.setSelection(true); _newRadio.setSelection(false); setHostText(getExistingAppHost()); } else if (event.widget == _newRadio) { setHostText(_nameText.getText()); } else if (event.widget == _existingRadio) { setHostText(getExistingAppHost()); } validatePage(); } @Override public void modifyText(ModifyEvent event) { if (event.widget == _nameText) { setHostText(_nameText.getText()); _existingRadio.setSelection(false); _newRadio.setSelection(true); } validatePage(); } @Override protected void validatePage() { showError(null); if (_newRadio.getSelection()) { String name = _nameText.getText().trim(); if (name.length() > 0) { boolean error = false; for (CloudApplication app : _applications) { if (StringUtil.equalsIgnoreCase(name, app.getName())) { error = true; break; } } if (error) { showError("This application name exists already in the chosen Cloud Space"); // $NLX-NameBluemixWizardPage.Thisapplicationnameexistsalreadyi-1$ } } else { showError("Application name cannot be blank"); // $NLX-NameBluemixWizardPage.Applicationnamecannotbeblank-1$ } } if (getErrorMessage() == null) { String host = _hostText.getText().trim(); if (host.length() > 0) { if (!isHostValid(host)) { showError("Host can only contain [0-9, a-z, A-Z, \'-\'] and must not begin or end with \'-\'"); // $NLX-NameBluemixWizardPage.Hostcanonlycontain09azdashandmust-1$ } } else { showError("Host cannot be blank"); // $NLX-NameBluemixWizardPage.Hostcannotbeblank-1$ } } } private boolean isHostValid(String host) { if (host.charAt(0) == '-') { return false; } if (host.charAt(host.length() - 1) == '-') { return false; } for (int i = 0; i < host.length(); i++) { if (!isValidChar(host.charAt(i))) { return false; } } return true; } private boolean isValidChar(char chr) { if (chr >= 'a' && chr <= 'z') return true; if (chr >= 'A' && chr <= 'Z') return true; if (chr >= '0' && chr <= '9') return true; if (chr == '-') return true; return false; } @Override public void selectionChanged(SelectionChangedEvent arg0) { } @Override public void controlMoved(ControlEvent arg0) { } @Override public void controlResized(ControlEvent event) { Table table = (Table) event.widget; table.getColumn(0).setWidth(table.getClientArea().width); }; private String[] getApplications() { ArrayList<String> list = new ArrayList<String>(); for (CloudApplication app : _applications) { list.add(app.getName()); } return list.toArray(new String[list.size()]); } public String getAppName() { if (_newRadio.getSelection()) { return WizardUtils.getTextValue(_nameText, ""); } else { return _applications.get(_appViewer.getTable().getSelectionIndex()).getName(); } } public String getHost() { return WizardUtils.getTextValue(_hostText, ""); } private String getExistingAppHost() { for (String uri : _applications.get(_appViewer.getTable().getSelectionIndex()).getUris()) { uri = uri.trim(); if (uri.endsWith(_domainLabel.getText())) { // Trim the domain from the URI return uri.substring(0, uri.length() - _domainLabel.getText().length()); } } return ""; } private void setHostText(String txt) { _hostText.setText(txt.trim().replace(" ", "-")); } public void setCloudSpace(String org, String space) { _org = org; _space = space; } public IRunnableWithProgress getApplications = new IRunnableWithProgress() { public void run(IProgressMonitor monitor) { try { _warningMsg = ""; monitor.beginTask(BluemixUtil.productizeString("%BM_PRODUCT%"), IProgressMonitor.UNKNOWN); // $NON-NLS-1$ try { if (_clientCloudSpace != null) { _clientCloudSpace.logout(); } monitor.subTask("Connecting to Cloud Space..."); // $NLX-NameBluemixWizardPage.ConnectingtoCloudSpace-1$ String target = PreferencePage.getSecurePreference(KEY_BLUEMIX_SERVER_URL, ""); _clientCloudSpace = new CloudFoundryClient(((AbstractBluemixWizard) _wiz)._credentials, URI.create(target).toURL(), _org, _space); _clientCloudSpace.login(); } catch (Exception e) { throw new Exception("Error connecting to Cloud Space", e); // $NLX-NameBluemixWizardPage.ErrorconnectingtoCloudSpace-1$ } monitor.subTask("Retrieving domains..."); // $NLX-NameBluemixWizardPage.Retrievingdomains-1$ try { List<CloudDomain> domains = _clientCloudSpace.getSharedDomains(); if (!domains.isEmpty()) { _defaultDomain = domains.get(0).getName(); } else { _defaultDomain = ""; } } catch (Exception e) { throw new Exception("Error retrieving default domain", e); // $NLX-NameBluemixWizardPage.Errorretrievingdefaultdomain-1$ } monitor.subTask("Retrieving applications..."); // $NLX-NameBluemixWizardPage.Retrievingapplications-1$ try { _applications = _clientCloudSpace.getApplications(); } catch (Exception e) { if (BluemixUtil.isDefect187654Exception(e)) { // Probably Defect187654 - retrieving non string env vars // Allow the wizard to continue with a warning message _applications = new ArrayList<CloudApplication>(); _warningMsg = "Could not retrieve application list from Cloud Space"; // $NLX-NameBluemixWizardPage.Couldnotretrieveapplicationlistfr-1$ if (BluemixLogger.BLUEMIX_LOGGER.isWarnEnabled()) { BluemixLogger.BLUEMIX_LOGGER.warnp(null, "run", e, "Failed to retrieve application list from Cloud Space"); // $NON-NLS-1$ $NLW-NameBluemixWizardPage.Failedtoretrieveapplicationlistfr-2$ } } else { throw new Exception("Error retrieving applications", e); // $NLX-NameBluemixWizardPage.Errorretrievingapplications-1$ } } monitor.done(); } catch (Exception e) { ((AbstractBluemixWizard) _wiz).setJobException(e); _clientCloudSpace = null; } } }; }