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.git.ssh.client.manage; import com.google.gwt.cell.client.ButtonCell; import com.google.gwt.cell.client.Cell.Context; import com.google.gwt.cell.client.FieldUpdater; import com.google.gwt.cell.client.TextCell; import com.google.gwt.core.client.GWT; import com.google.gwt.dom.client.Style; import com.google.gwt.event.dom.client.ClickEvent; import com.google.gwt.event.dom.client.ClickHandler; import com.google.gwt.safehtml.shared.SafeHtmlBuilder; import com.google.gwt.uibinder.client.UiBinder; import com.google.gwt.uibinder.client.UiField; import com.google.gwt.uibinder.client.UiHandler; import com.google.gwt.user.cellview.client.CellTable; import com.google.gwt.user.cellview.client.Column; import com.google.gwt.user.client.Event; import com.google.gwt.user.client.ui.Button; import com.google.gwt.user.client.ui.Composite; import com.google.gwt.user.client.ui.SimplePanel; import com.google.gwt.user.client.ui.UIObject; import com.google.gwt.user.client.ui.Widget; import com.google.inject.Inject; import com.google.inject.Singleton; import org.eclipse.che.api.ssh.shared.dto.SshPairDto; import org.eclipse.che.ide.ext.git.ssh.client.SshLocalizationConstant; import org.eclipse.che.ide.ext.git.ssh.client.SshResources; import org.eclipse.che.ide.ui.cellview.CellTableResources; import javax.validation.constraints.NotNull; import java.util.List; /** * The implementation of {@link SshKeyManagerView}. * * @author Andrey Plotnikov */ @Singleton public class SshKeyManagerViewImpl extends Composite implements SshKeyManagerView { interface SshKeyManagerViewImplUiBinder extends UiBinder<Widget, SshKeyManagerViewImpl> { } private static SshKeyManagerViewImplUiBinder ourUiBinder = GWT.create(SshKeyManagerViewImplUiBinder.class); @UiField Button btnGenerate; @UiField Button btnUpload; @UiField SimplePanel btnGenerateGithubKey; @UiField(provided = true) CellTable<SshPairDto> keys; @UiField(provided = true) final SshResources res; @UiField(provided = true) final SshLocalizationConstant locale; private ActionDelegate delegate; @Inject protected SshKeyManagerViewImpl(SshResources resources, SshLocalizationConstant locale, CellTableResources res) { this.res = resources; this.locale = locale; initSshKeyTable(res); initWidget(ourUiBinder.createAndBindUi(this)); btnGenerateGithubKey.sinkEvents(Event.ONCLICK); btnGenerateGithubKey.addHandler(new ClickHandler() { @Override public void onClick(ClickEvent event) { delegate.onGenerateGithubKeyClicked(); } }, ClickEvent.getType()); } /** Creates table what contains list of available ssh keys. */ private void initSshKeyTable(final CellTable.Resources res) { keys = new CellTable<>(15, res); Column<SshPairDto, String> hostColumn = new Column<SshPairDto, String>(new TextCell()) { @Override public String getValue(SshPairDto object) { return object.getName(); } @Override public void render(Context context, SshPairDto object, SafeHtmlBuilder sb) { sb.appendHtmlConstant("<div id=\"" + UIObject.DEBUG_ID_PREFIX + "-gitSshKeys-cellTable-host-" + context.getIndex() + "\">"); super.render(context, object, sb); } }; hostColumn.setSortable(true); Column<SshPairDto, String> publicKeyColumn = new Column<SshPairDto, String>(new ButtonCell()) { @Override public String getValue(SshPairDto object) { return "View"; } @Override public void render(Context context, SshPairDto object, SafeHtmlBuilder sb) { sb.appendHtmlConstant("<div id=\"" + UIObject.DEBUG_ID_PREFIX + "-gitSshKeys-cellTable-key-" + context.getIndex() + "\">"); if (object != null && object.getPublicKey() != null) { super.render(context, object, sb); } } }; // Creates handler on button clicked publicKeyColumn.setFieldUpdater(new FieldUpdater<SshPairDto, String>() { @Override public void update(int index, SshPairDto object, String value) { delegate.onViewClicked(object); } }); Column<SshPairDto, String> deleteKeyColumn = new Column<SshPairDto, String>(new ButtonCell()) { @Override public String getValue(SshPairDto object) { return "Delete"; } @Override public void render(Context context, SshPairDto object, SafeHtmlBuilder sb) { sb.appendHtmlConstant("<div id=\"" + UIObject.DEBUG_ID_PREFIX + "-gitSshKeys-cellTable-delete-" + context.getIndex() + "\">"); super.render(context, object, sb); } }; // Creates handler on button clicked deleteKeyColumn.setFieldUpdater(new FieldUpdater<SshPairDto, String>() { @Override public void update(int index, SshPairDto object, String value) { delegate.onDeleteClicked(object); } }); keys.addColumn(hostColumn, "Host"); keys.addColumn(publicKeyColumn, "Public Key"); keys.addColumn(deleteKeyColumn, "Delete"); keys.setColumnWidth(hostColumn, 50, Style.Unit.PCT); keys.setColumnWidth(publicKeyColumn, 30, Style.Unit.PX); keys.setColumnWidth(deleteKeyColumn, 30, Style.Unit.PX); // don't show loading indicator keys.setLoadingIndicator(null); } /** {@inheritDoc} */ @Override public void setPairs(@NotNull List<SshPairDto> pairs) { this.keys.setRowData(pairs); } /** {@inheritDoc} */ @Override public void setDelegate(ActionDelegate delegate) { this.delegate = delegate; } @UiHandler("btnGenerate") public void onGenerateClicked(ClickEvent event) { delegate.onGenerateClicked(); } @UiHandler("btnUpload") public void onUpdateClicked(ClickEvent event) { delegate.onUploadClicked(); } }