Java tutorial
// Copyright (C) 2011 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 static com.google.gerrit.common.ProjectAccessUtil.mergeSections; import static com.google.gerrit.common.ProjectAccessUtil.removeEmptyPermissionsAndSections; import com.google.gerrit.client.Gerrit; import com.google.gerrit.client.rpc.GerritCallback; import com.google.gerrit.client.rpc.ScreenLoadCallback; import com.google.gerrit.common.PageLinks; import com.google.gerrit.common.data.AccessSection; import com.google.gerrit.common.data.ProjectAccess; import com.google.gerrit.reviewdb.client.Change; import com.google.gerrit.reviewdb.client.Project; import com.google.gwt.core.client.GWT; import com.google.gwt.dom.client.DivElement; import com.google.gwt.editor.client.SimpleBeanEditorDriver; import com.google.gwt.event.dom.client.ClickEvent; 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.client.Window; import com.google.gwt.user.client.ui.Button; import com.google.gwt.user.client.ui.HTMLPanel; import com.google.gwt.user.client.ui.Label; import com.google.gwt.user.client.ui.UIObject; import com.google.gwt.user.client.ui.VerticalPanel; import com.google.gwtexpui.globalkey.client.NpTextArea; import java.util.Collections; import java.util.HashSet; import java.util.List; import java.util.Set; public class ProjectAccessScreen extends ProjectScreen { interface Binder extends UiBinder<HTMLPanel, ProjectAccessScreen> { } private static final Binder uiBinder = GWT.create(Binder.class); interface Driver extends SimpleBeanEditorDriver< // ProjectAccess, // ProjectAccessEditor> { } @UiField DivElement editTools; @UiField Button edit; @UiField Button cancel1; @UiField Button cancel2; @UiField VerticalPanel error; @UiField ProjectAccessEditor accessEditor; @UiField DivElement commitTools; @UiField NpTextArea commitMessage; @UiField Button commit; @UiField Button review; private Driver driver; private ProjectAccess access; public ProjectAccessScreen(final Project.NameKey toShow) { super(toShow); } @Override protected void onInitUI() { super.onInitUI(); add(uiBinder.createAndBindUi(this)); driver = GWT.create(Driver.class); accessEditor.setEditing(false); driver.initialize(accessEditor); } @Override protected void onLoad() { super.onLoad(); Util.PROJECT_SVC.projectAccess(getProjectKey(), new ScreenLoadCallback<ProjectAccess>(this) { @Override public void preDisplay(ProjectAccess access) { displayReadOnly(access); } }); savedPanel = ACCESS; } private void displayReadOnly(ProjectAccess access) { this.access = access; accessEditor.setEditing(false); UIObject.setVisible(editTools, !access.getOwnerOf().isEmpty() || access.canUpload()); edit.setEnabled(!access.getOwnerOf().isEmpty() || access.canUpload()); cancel1.setVisible(false); UIObject.setVisible(commitTools, false); driver.edit(access); } @UiHandler("edit") void onEdit(ClickEvent event) { resetEditors(); edit.setEnabled(false); cancel1.setVisible(true); UIObject.setVisible(commitTools, true); commit.setVisible(!access.getOwnerOf().isEmpty()); review.setVisible(access.canUpload()); accessEditor.setEditing(true); driver.edit(access); } private void resetEditors() { // Push an empty instance through the driver before pushing the real // data. This will force GWT to delete and recreate the editors, which // is required to build initialize them as editable vs. read-only. ProjectAccess mock = new ProjectAccess(); mock.setProjectName(access.getProjectName()); mock.setRevision(access.getRevision()); mock.setLocal(Collections.<AccessSection>emptyList()); mock.setOwnerOf(Collections.<String>emptySet()); driver.edit(mock); } @UiHandler(value = { "cancel1", "cancel2" }) void onCancel(ClickEvent event) { Gerrit.display(PageLinks.toProjectAcceess(getProjectKey())); } @UiHandler("commit") void onCommit(ClickEvent event) { final ProjectAccess access = driver.flush(); if (driver.hasErrors()) { Window.alert(Util.C.errorsMustBeFixed()); return; } String message = commitMessage.getText().trim(); if ("".equals(message)) { message = null; } enable(false); Util.PROJECT_SVC.changeProjectAccess( // getProjectKey(), // access.getRevision(), // message, // access.getLocal(), // new GerritCallback<ProjectAccess>() { @Override public void onSuccess(ProjectAccess newAccess) { enable(true); commitMessage.setText(""); error.clear(); final Set<String> diffs = getDiffs(access, newAccess); if (diffs.isEmpty()) { displayReadOnly(newAccess); } else { error.add(new Label(Gerrit.C.projectAccessError())); for (final String diff : diffs) { error.add(new Label(diff)); } if (access.canUpload()) { error.add(new Label(Gerrit.C.projectAccessProposeForReviewHint())); } } } private Set<String> getDiffs(ProjectAccess wantedAccess, ProjectAccess newAccess) { final List<AccessSection> wantedSections = mergeSections( removeEmptyPermissionsAndSections(wantedAccess.getLocal())); final HashSet<AccessSection> same = new HashSet<AccessSection>(wantedSections); final HashSet<AccessSection> different = new HashSet<AccessSection>( wantedSections.size() + newAccess.getLocal().size()); different.addAll(wantedSections); different.addAll(newAccess.getLocal()); same.retainAll(newAccess.getLocal()); different.removeAll(same); final Set<String> differentNames = new HashSet<String>(); for (final AccessSection s : different) { differentNames.add(s.getName()); } return differentNames; } @Override public void onFailure(Throwable caught) { error.clear(); enable(true); super.onFailure(caught); } }); } @UiHandler("review") void onReview(ClickEvent event) { final ProjectAccess access = driver.flush(); if (driver.hasErrors()) { Window.alert(Util.C.errorsMustBeFixed()); return; } String message = commitMessage.getText().trim(); if ("".equals(message)) { message = null; } enable(false); Util.PROJECT_SVC.reviewProjectAccess( // getProjectKey(), // access.getRevision(), // message, // access.getLocal(), // new GerritCallback<Change.Id>() { @Override public void onSuccess(Change.Id changeId) { enable(true); commitMessage.setText(""); error.clear(); if (changeId != null) { Gerrit.display(PageLinks.toChange(changeId)); } else { displayReadOnly(access); } } @Override public void onFailure(Throwable caught) { error.clear(); enable(true); super.onFailure(caught); } }); } private void enable(boolean enabled) { commitMessage.setEnabled(enabled); commit.setEnabled(enabled ? !access.getOwnerOf().isEmpty() : false); review.setEnabled(enabled ? access.canUpload() : false); cancel1.setEnabled(enabled); cancel2.setEnabled(enabled); } }