Java tutorial
// Copyright (C) 2013 The Android Open Source Project // // 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.google.gerrit.client.change; import com.google.gerrit.client.Gerrit; import com.google.gerrit.client.account.AccountApi; import com.google.gerrit.client.changes.ChangeApi; import com.google.gerrit.client.changes.ChangeList; import com.google.gerrit.client.info.ChangeInfo; import com.google.gerrit.client.info.ChangeInfo.EditInfo; import com.google.gerrit.client.info.ChangeInfo.FetchInfo; import com.google.gerrit.client.info.GeneralPreferences; import com.google.gerrit.client.rpc.NativeMap; import com.google.gerrit.client.rpc.RestApi; import com.google.gerrit.extensions.client.ListChangesOption; import com.google.gerrit.reviewdb.client.PatchSet; import com.google.gwt.core.client.JavaScriptObject; import com.google.gwt.event.dom.client.ChangeEvent; import com.google.gwt.event.dom.client.ChangeHandler; import com.google.gwt.user.client.rpc.AsyncCallback; import com.google.gwt.user.client.ui.Anchor; import com.google.gwt.user.client.ui.FlexTable; import com.google.gwt.user.client.ui.HorizontalPanel; import com.google.gwt.user.client.ui.InlineLabel; import com.google.gwt.user.client.ui.ListBox; import com.google.gwt.user.client.ui.VerticalPanel; import com.google.gwt.user.client.ui.Widget; import com.google.gwtexpui.clippy.client.CopyableLabel; import java.util.ArrayList; import java.util.EnumSet; import java.util.Iterator; import java.util.List; class DownloadBox extends VerticalPanel { private final ChangeInfo change; private final String revision; private final PatchSet.Id psId; private final FlexTable commandTable; private final ListBox scheme; private NativeMap<FetchInfo> fetch; DownloadBox(ChangeInfo change, String revision, PatchSet.Id psId) { this.change = change; this.revision = revision; this.psId = psId; this.commandTable = new FlexTable(); this.scheme = new ListBox(); this.scheme.addChangeHandler(new ChangeHandler() { @Override public void onChange(ChangeEvent event) { renderCommands(); if (Gerrit.isSignedIn()) { saveScheme(); } } }); setStyleName(Gerrit.RESOURCES.css().downloadBox()); commandTable.setStyleName(Gerrit.RESOURCES.css().downloadBoxTable()); scheme.setStyleName(Gerrit.RESOURCES.css().downloadBoxScheme()); add(commandTable); } @Override protected void onLoad() { if (fetch == null) { if (psId.get() == 0) { ChangeApi.editWithCommands(change.legacyId().get()).get(new AsyncCallback<EditInfo>() { @Override public void onSuccess(EditInfo result) { fetch = result.fetch(); renderScheme(); } @Override public void onFailure(Throwable caught) { } }); } else { RestApi call = ChangeApi.detail(change.legacyId().get()); ChangeList.addOptions(call, EnumSet.of(revision.equals(change.currentRevision()) ? ListChangesOption.CURRENT_REVISION : ListChangesOption.ALL_REVISIONS, ListChangesOption.DOWNLOAD_COMMANDS)); call.get(new AsyncCallback<ChangeInfo>() { @Override public void onSuccess(ChangeInfo result) { fetch = result.revision(revision).fetch(); renderScheme(); } @Override public void onFailure(Throwable caught) { } }); } } } private void renderCommands() { commandTable.removeAllRows(); if (scheme.getItemCount() > 0) { FetchInfo fetchInfo = fetch.get(scheme.getValue(scheme.getSelectedIndex())); for (String commandName : fetchInfo.commands().sortedKeys()) { CopyableLabel copyLabel = new CopyableLabel(fetchInfo.command(commandName)); copyLabel.setStyleName(Gerrit.RESOURCES.css().downloadBoxCopyLabel()); insertCommand(commandName, copyLabel); } } if (change.revision(revision).commit().parents().length() == 1) { insertPatch(); } insertArchive(); insertCommand(null, scheme); } private void insertPatch() { String id = revision.substring(0, 7); Anchor patchBase64 = new Anchor(id + ".diff.base64"); patchBase64.setHref(new RestApi("/changes/").id(psId.getParentKey().get()).view("revisions").id(revision) .view("patch").addParameterTrue("download").url()); Anchor patchZip = new Anchor(id + ".diff.zip"); patchZip.setHref(new RestApi("/changes/").id(psId.getParentKey().get()).view("revisions").id(revision) .view("patch").addParameterTrue("zip").url()); HorizontalPanel p = new HorizontalPanel(); p.add(patchBase64); InlineLabel spacer = new InlineLabel("|"); spacer.setStyleName(Gerrit.RESOURCES.css().downloadBoxSpacer()); p.add(spacer); p.add(patchZip); insertCommand("Patch-File", p); } private void insertArchive() { List<String> activated = Gerrit.info().download().archives(); if (activated.isEmpty()) { return; } List<Anchor> anchors = new ArrayList<>(activated.size()); for (String f : activated) { Anchor archive = new Anchor(f); archive.setHref(new RestApi("/changes/").id(psId.getParentKey().get()).view("revisions").id(revision) .view("archive").addParameter("format", f).url()); anchors.add(archive); } HorizontalPanel p = new HorizontalPanel(); Iterator<Anchor> it = anchors.iterator(); while (it.hasNext()) { Anchor a = it.next(); p.add(a); if (it.hasNext()) { InlineLabel spacer = new InlineLabel("|"); spacer.setStyleName(Gerrit.RESOURCES.css().downloadBoxSpacer()); p.add(spacer); } } insertCommand("Archive", p); } private void insertCommand(String commandName, Widget w) { int row = commandTable.getRowCount(); commandTable.insertRow(row); commandTable.getCellFormatter().addStyleName(row, 0, Gerrit.RESOURCES.css().downloadBoxTableCommandColumn()); if (commandName != null) { commandTable.setText(row, 0, commandName); } if (w != null) { commandTable.setWidget(row, 1, w); } } private void renderScheme() { for (String id : fetch.sortedKeys()) { scheme.addItem(id); } if (scheme.getItemCount() == 0) { scheme.setVisible(false); } else { if (scheme.getItemCount() == 1) { scheme.setSelectedIndex(0); scheme.setVisible(false); } else { int select = 0; String find = Gerrit.getUserPreferences().downloadScheme(); if (find != null) { for (int i = 0; i < scheme.getItemCount(); i++) { if (find.equals(scheme.getValue(i))) { select = i; break; } } } scheme.setSelectedIndex(select); } } renderCommands(); } private void saveScheme() { String schemeStr = scheme.getValue(scheme.getSelectedIndex()); GeneralPreferences prefs = Gerrit.getUserPreferences(); if (Gerrit.isSignedIn() && !schemeStr.equals(prefs.downloadScheme())) { prefs.downloadScheme(schemeStr); GeneralPreferences in = GeneralPreferences.create(); in.downloadScheme(schemeStr); AccountApi.self().view("preferences").put(in, new AsyncCallback<JavaScriptObject>() { @Override public void onSuccess(JavaScriptObject result) { } @Override public void onFailure(Throwable caught) { } }); } } }