Java tutorial
/******************************************************************************* * Copyright (c) 2012-2016 Codenvy, S.A. * 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 * * Contributors: * Codenvy, S.A. - initial API and implementation *******************************************************************************/ package org.eclipse.che.ide.ext.ssh.client.manage; import com.google.gwt.http.client.URL; import com.google.gwt.user.client.Window; import com.google.gwt.user.client.rpc.AsyncCallback; import com.google.gwt.user.client.ui.AcceptsOneWidget; import com.google.inject.Inject; import com.google.inject.Singleton; import org.eclipse.che.api.promises.client.Operation; import org.eclipse.che.api.promises.client.OperationException; import org.eclipse.che.api.promises.client.PromiseError; import org.eclipse.che.ide.api.ssh.SshServiceClient; import org.eclipse.che.api.ssh.shared.dto.SshPairDto; import org.eclipse.che.ide.api.notification.NotificationManager; import org.eclipse.che.ide.api.preferences.AbstractPreferencePagePresenter; import org.eclipse.che.ide.ext.ssh.client.SshLocalizationConstant; import org.eclipse.che.ide.ext.ssh.client.upload.UploadSshKeyPresenter; import org.eclipse.che.ide.api.dialogs.CancelCallback; import org.eclipse.che.ide.api.dialogs.ConfirmCallback; import org.eclipse.che.ide.api.dialogs.DialogFactory; import org.eclipse.che.ide.api.dialogs.InputCallback; import javax.validation.constraints.NotNull; import java.util.List; import static org.eclipse.che.ide.api.notification.StatusNotification.DisplayMode.FLOAT_MODE; import static org.eclipse.che.ide.api.notification.StatusNotification.Status.FAIL; /** * The presenter for managing ssh keys. * * @author Evgen Vidolob * @author Sergii Leschenko */ @Singleton public class SshKeyManagerPresenter extends AbstractPreferencePagePresenter implements SshKeyManagerView.ActionDelegate { public static final String SSH_SERVICE = "machine"; private final DialogFactory dialogFactory; private final SshKeyManagerView view; private final SshServiceClient service; private final SshLocalizationConstant constant; private final UploadSshKeyPresenter uploadSshKeyPresenter; private final NotificationManager notificationManager; @Inject public SshKeyManagerPresenter(SshKeyManagerView view, SshServiceClient service, SshLocalizationConstant constant, UploadSshKeyPresenter uploadSshKeyPresenter, NotificationManager notificationManager, DialogFactory dialogFactory) { super(constant.sshManagerTitle(), constant.sshManagerCategory()); this.view = view; this.dialogFactory = dialogFactory; this.view.setDelegate(this); this.service = service; this.constant = constant; this.uploadSshKeyPresenter = uploadSshKeyPresenter; this.notificationManager = notificationManager; } @Override public void onViewClicked(@NotNull final SshPairDto pair) { dialogFactory.createMessageDialog(constant.publicSshKeyField() + pair.getName(), pair.getPublicKey(), null) .show(); } @Override public void onDeleteClicked(@NotNull final SshPairDto pair) { dialogFactory.createConfirmDialog(constant.deleteSshKeyTitle(), constant.deleteSshKeyQuestion(pair.getName()), new ConfirmCallback() { @Override public void accepted() { deleteKey(pair); } }, getCancelCallback()).show(); } private CancelCallback getCancelCallback() { return new CancelCallback() { @Override public void cancelled() { } }; } private void deleteKey(final SshPairDto key) { service.deletePair(key.getService(), key.getName()).then(new Operation<Void>() { @Override public void apply(Void arg) throws OperationException { refreshKeys(); } }).catchError(new Operation<PromiseError>() { @Override public void apply(PromiseError arg) throws OperationException { notificationManager.notify(arg.getMessage(), FAIL, FLOAT_MODE); } }); } @Override public void onGenerateClicked() { dialogFactory .createInputDialog(constant.generateSshKeyTitle(), constant.sshKeyTitle(), new InputCallback() { @Override public void accepted(String host) { generateKey(host); } }, getCancelCallback()).show(); } private void generateKey(String host) { service.generatePair(SSH_SERVICE, host).then(new Operation<SshPairDto>() { @Override public void apply(SshPairDto pair) throws OperationException { downloadPrivateKey(pair.getPrivateKey()); refreshKeys(); } }).catchError(new Operation<PromiseError>() { @Override public void apply(PromiseError arg) throws OperationException { notificationManager.notify(constant.failedToGenerateSshKey(), arg.getMessage(), FAIL, FLOAT_MODE); } }); } private void downloadPrivateKey(final String privateKey) { dialogFactory.createConfirmDialog(constant.downloadPrivateKeyTitle(), constant.downloadPrivateKeyMessage(), new ConfirmCallback() { @Override public void accepted() { Window.open("data:application/x-pem-key," + URL.encodePathSegment(privateKey), "_blank", null); } }, getCancelCallback()).show(); } @Override public void onUploadClicked() { uploadSshKeyPresenter.showDialog(new AsyncCallback<Void>() { @Override public void onSuccess(Void result) { refreshKeys(); } @Override public void onFailure(Throwable caught) { } }); } @Override public boolean isDirty() { return false; } @Override public void go(AcceptsOneWidget container) { refreshKeys(); container.setWidget(view); } private void refreshKeys() { service.getPairs(SSH_SERVICE).then(new Operation<List<SshPairDto>>() { @Override public void apply(List<SshPairDto> result) throws OperationException { view.setPairs(result); } }).catchError(new Operation<PromiseError>() { @Override public void apply(PromiseError arg) throws OperationException { notificationManager.notify(constant.failedToLoadSshKeys(), FAIL, FLOAT_MODE); } }); } @Override public void storeChanges() { } @Override public void revertChanges() { } }