Java tutorial
// Copyright (C) 2009 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.admin; import com.google.gerrit.client.ConfirmationCallback; import com.google.gerrit.client.ConfirmationDialog; import com.google.gerrit.client.ErrorDialog; import com.google.gerrit.client.Gerrit; import com.google.gerrit.client.GitwebLink; import com.google.gerrit.client.projects.BranchInfo; import com.google.gerrit.client.projects.ProjectApi; import com.google.gerrit.client.rpc.GerritCallback; import com.google.gerrit.client.rpc.ScreenLoadCallback; import com.google.gerrit.client.ui.BranchLink; import com.google.gerrit.client.ui.FancyFlexTable; import com.google.gerrit.client.ui.HintTextBox; import com.google.gerrit.common.data.ListBranchesResult; import com.google.gerrit.reviewdb.client.Branch; import com.google.gerrit.reviewdb.client.Change; import com.google.gerrit.reviewdb.client.Project; import com.google.gwt.core.client.Scheduler; import com.google.gwt.core.client.Scheduler.ScheduledCommand; import com.google.gwt.event.dom.client.ClickEvent; import com.google.gwt.event.dom.client.ClickHandler; import com.google.gwt.event.dom.client.KeyCodes; import com.google.gwt.event.dom.client.KeyPressEvent; import com.google.gwt.event.dom.client.KeyPressHandler; import com.google.gwt.user.client.ui.Anchor; import com.google.gwt.user.client.ui.Button; import com.google.gwt.user.client.ui.CheckBox; import com.google.gwt.user.client.ui.FlexTable.FlexCellFormatter; import com.google.gwt.user.client.ui.FlowPanel; import com.google.gwt.user.client.ui.Grid; import com.google.gwt.user.client.ui.Label; import com.google.gwt.user.client.ui.TextBox; import com.google.gwt.user.client.ui.VerticalPanel; import com.google.gwtexpui.safehtml.client.SafeHtmlBuilder; import java.util.HashSet; import java.util.List; import java.util.Set; public class ProjectBranchesScreen extends ProjectScreen { private BranchesTable branches; private Button delBranch; private Button addBranch; private HintTextBox nameTxtBox; private HintTextBox irevTxtBox; private FlowPanel addPanel; public ProjectBranchesScreen(final Project.NameKey toShow) { super(toShow); } @Override protected void onLoad() { super.onLoad(); Util.PROJECT_SVC.listBranches(getProjectKey(), new ScreenLoadCallback<ListBranchesResult>(this) { @Override public void preDisplay(final ListBranchesResult result) { if (result.getNoRepository()) { branches.setVisible(false); addPanel.setVisible(false); delBranch.setVisible(false); Label no = new Label(Util.C.errorNoGitRepository()); no.setStyleName(Gerrit.RESOURCES.css().smallHeading()); add(no); } else { enableForm(true); display(result.getBranches()); addPanel.setVisible(result.getCanAdd()); } } }); savedPanel = BRANCH; } private void display(final List<Branch> listBranches) { branches.display(listBranches); delBranch.setVisible(branches.hasBranchCanDelete()); } private void enableForm(final boolean on) { delBranch.setEnabled(on); addBranch.setEnabled(on); nameTxtBox.setEnabled(on); irevTxtBox.setEnabled(on); } @Override protected void onInitUI() { super.onInitUI(); addPanel = new FlowPanel(); final Grid addGrid = new Grid(2, 2); addGrid.setStyleName(Gerrit.RESOURCES.css().addBranch()); final int texBoxLength = 50; nameTxtBox = new HintTextBox(); nameTxtBox.setVisibleLength(texBoxLength); nameTxtBox.setHintText(Util.C.defaultBranchName()); nameTxtBox.addKeyPressHandler(new KeyPressHandler() { @Override public void onKeyPress(KeyPressEvent event) { if (event.getNativeEvent().getKeyCode() == KeyCodes.KEY_ENTER) { doAddNewBranch(); } } }); addGrid.setText(0, 0, Util.C.columnBranchName() + ":"); addGrid.setWidget(0, 1, nameTxtBox); irevTxtBox = new HintTextBox(); irevTxtBox.setVisibleLength(texBoxLength); irevTxtBox.setHintText(Util.C.defaultRevisionSpec()); irevTxtBox.addKeyPressHandler(new KeyPressHandler() { @Override public void onKeyPress(KeyPressEvent event) { if (event.getNativeEvent().getKeyCode() == KeyCodes.KEY_ENTER) { doAddNewBranch(); } } }); addGrid.setText(1, 0, Util.C.initialRevision() + ":"); addGrid.setWidget(1, 1, irevTxtBox); addBranch = new Button(Util.C.buttonAddBranch()); addBranch.addClickHandler(new ClickHandler() { @Override public void onClick(final ClickEvent event) { doAddNewBranch(); } }); addPanel.add(addGrid); addPanel.add(addBranch); branches = new BranchesTable(); delBranch = new Button(Util.C.buttonDeleteBranch()); delBranch.addClickHandler(new ClickHandler() { @Override public void onClick(final ClickEvent event) { branches.deleteChecked(); } }); add(branches); add(delBranch); add(addPanel); } private void doAddNewBranch() { final String branchName = nameTxtBox.getText().trim(); if ("".equals(branchName)) { nameTxtBox.setFocus(true); return; } final String rev = irevTxtBox.getText().trim(); if ("".equals(rev)) { irevTxtBox.setText("HEAD"); Scheduler.get().scheduleDeferred(new ScheduledCommand() { @Override public void execute() { irevTxtBox.selectAll(); irevTxtBox.setFocus(true); } }); return; } addBranch.setEnabled(false); ProjectApi.createBranch(getProjectKey(), branchName, rev, new GerritCallback<BranchInfo>() { @Override public void onSuccess(BranchInfo result) { addBranch.setEnabled(true); nameTxtBox.setText(""); irevTxtBox.setText(""); Util.PROJECT_SVC.listBranches(getProjectKey(), new GerritCallback<ListBranchesResult>() { @Override public void onSuccess(ListBranchesResult result) { display(result.getBranches()); } }); } @Override public void onFailure(Throwable caught) { addBranch.setEnabled(true); selectAllAndFocus(nameTxtBox); new ErrorDialog(caught.getMessage()).center(); } }); } private static void selectAllAndFocus(final TextBox textBox) { textBox.selectAll(); textBox.setFocus(true); } private class BranchesTable extends FancyFlexTable<Branch> { boolean canDelete; BranchesTable() { table.setWidth(""); table.setText(0, 2, Util.C.columnBranchName()); table.setText(0, 3, Util.C.columnBranchRevision()); final FlexCellFormatter fmt = table.getFlexCellFormatter(); fmt.addStyleName(0, 1, Gerrit.RESOURCES.css().iconHeader()); fmt.addStyleName(0, 2, Gerrit.RESOURCES.css().dataHeader()); fmt.addStyleName(0, 3, Gerrit.RESOURCES.css().dataHeader()); if (Gerrit.getGitwebLink() != null) { fmt.addStyleName(0, 4, Gerrit.RESOURCES.css().dataHeader()); } } void deleteChecked() { final SafeHtmlBuilder b = new SafeHtmlBuilder(); b.openElement("b"); b.append(Gerrit.C.branchDeletionConfirmationMessage()); b.closeElement("b"); b.openElement("p"); final HashSet<Branch.NameKey> ids = new HashSet<Branch.NameKey>(); for (int row = 1; row < table.getRowCount(); row++) { final Branch k = getRowItem(row); if (k != null && table.getWidget(row, 1) instanceof CheckBox && ((CheckBox) table.getWidget(row, 1)).getValue()) { if (!ids.isEmpty()) { b.append(",").br(); } b.append(k.getName()); ids.add(k.getNameKey()); } } b.closeElement("p"); if (ids.isEmpty()) { return; } ConfirmationDialog confirmationDialog = new ConfirmationDialog(Gerrit.C.branchDeletionDialogTitle(), b.toSafeHtml(), new ConfirmationCallback() { @Override public void onOk() { deleteBranches(ids); } }); confirmationDialog.center(); } private void deleteBranches(final Set<Branch.NameKey> branchIds) { Util.PROJECT_SVC.deleteBranch(getProjectKey(), branchIds, new GerritCallback<Set<Branch.NameKey>>() { public void onSuccess(final Set<Branch.NameKey> deleted) { if (!deleted.isEmpty()) { for (int row = 1; row < table.getRowCount();) { final Branch k = getRowItem(row); if (k != null && deleted.contains(k.getNameKey())) { table.removeRow(row); } else { row++; } } } branchIds.removeAll(deleted); if (!branchIds.isEmpty()) { final VerticalPanel p = new VerticalPanel(); final ErrorDialog errorDialog = new ErrorDialog(p); final Label l = new Label(Util.C.branchDeletionOpenChanges()); l.setStyleName(Gerrit.RESOURCES.css().errorDialogText()); p.add(l); for (final Branch.NameKey branch : branchIds) { final BranchLink link = new BranchLink(branch.getParentKey(), Change.Status.NEW, branch.get(), null) { @Override public void go() { errorDialog.hide(); super.go(); }; }; p.add(link); } errorDialog.center(); } } }); } void display(final List<Branch> result) { canDelete = false; while (1 < table.getRowCount()) table.removeRow(table.getRowCount() - 1); for (final Branch k : result) { final int row = table.getRowCount(); table.insertRow(row); applyDataRowStyle(row); populate(row, k); } } void populate(final int row, final Branch k) { final GitwebLink c = Gerrit.getGitwebLink(); if (k.getCanDelete()) { table.setWidget(row, 1, new CheckBox()); canDelete = true; } else { table.setText(row, 1, ""); } table.setText(row, 2, k.getShortName()); if (k.getRevision() != null) { table.setText(row, 3, k.getRevision().get()); } else { table.setText(row, 3, ""); } if (c != null) { table.setWidget(row, 4, new Anchor(c.getLinkName(), false, c.toBranch(k.getNameKey()))); } final FlexCellFormatter fmt = table.getFlexCellFormatter(); String iconCellStyle = Gerrit.RESOURCES.css().iconCell(); String dataCellStyle = Gerrit.RESOURCES.css().dataCell(); if ("refs/meta/config".equals(k.getShortName()) || "HEAD".equals(k.getShortName())) { iconCellStyle = Gerrit.RESOURCES.css().specialBranchIconCell(); dataCellStyle = Gerrit.RESOURCES.css().specialBranchDataCell(); fmt.setStyleName(row, 0, iconCellStyle); } fmt.addStyleName(row, 1, iconCellStyle); fmt.addStyleName(row, 2, dataCellStyle); fmt.addStyleName(row, 3, dataCellStyle); if (c != null) { fmt.addStyleName(row, 4, dataCellStyle); } setRowItem(row, k); } boolean hasBranchCanDelete() { return canDelete; } } }