Java tutorial
// Copyright 2010 Google Inc. All Rights Reseved. // // 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.testing.testify.risk.frontend.client.view.impl; import com.google.gwt.core.client.GWT; import com.google.gwt.event.dom.client.ChangeEvent; import com.google.gwt.event.dom.client.ClickEvent; import com.google.gwt.safehtml.shared.SafeHtmlUtils; 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.History; import com.google.gwt.user.client.Timer; import com.google.gwt.user.client.Window; import com.google.gwt.user.client.ui.Button; import com.google.gwt.user.client.ui.CheckBox; import com.google.gwt.user.client.ui.Composite; import com.google.gwt.user.client.ui.HTML; import com.google.gwt.user.client.ui.HorizontalPanel; import com.google.gwt.user.client.ui.TextArea; import com.google.gwt.user.client.ui.TextBox; import com.google.gwt.user.client.ui.VerticalPanel; import com.google.gwt.user.client.ui.Widget; import com.google.testing.testify.risk.frontend.client.event.DialogClosedEvent; import com.google.testing.testify.risk.frontend.client.event.DialogClosedEvent.DialogResult; import com.google.testing.testify.risk.frontend.client.event.DialogClosedHandler; import com.google.testing.testify.risk.frontend.client.view.ProjectSettingsView; import com.google.testing.testify.risk.frontend.client.view.widgets.PageSectionVerticalPanel; import com.google.testing.testify.risk.frontend.client.view.widgets.StandardDialogBox; import com.google.testing.testify.risk.frontend.model.Project; import com.google.testing.testify.risk.frontend.shared.rpc.UserRpc.ProjectAccess; import com.google.testing.testify.risk.frontend.shared.util.StringUtil; import java.util.List; /** * A widget for controlling the settings of a project. * * @author chrsmith@google.com (Chris Smith) */ public class ProjectSettingsViewImpl extends Composite implements ProjectSettingsView { interface ProjectSettingsViewImplUiBinder extends UiBinder<Widget, ProjectSettingsViewImpl> { } private static final ProjectSettingsViewImplUiBinder uiBinder = GWT .create(ProjectSettingsViewImplUiBinder.class); @UiField public TextBox projectName; @UiField public TextArea projectDescription; @UiField public CheckBox projectIsPublicCheckBox; @UiField public TextBox projectOwnersTextBox; @UiField public TextArea projectEditorsTextArea; @UiField public TextArea projectViewersTextArea; @UiField public Button updateProjectInfoButton; @UiField public HorizontalPanel savedPanel; @UiField public VerticalPanel publicPanel; @UiField public CheckBox deleteProjectCheckBox; @UiField PageSectionVerticalPanel deleteApplicationSection; // Handle to the underlying Presenter corresponding to this View. private Presenter presenter; private List<String> currentOwners; private List<String> currentEditors; private List<String> currentViewers; /** * Constructs a ProjectSettings object. */ public ProjectSettingsViewImpl() { initWidget(uiBinder.createAndBindUi(this)); } @UiHandler("projectOwnersTextBox") protected void onOwnersChange(ChangeEvent event) { projectOwnersTextBox.setText(StringUtil.trimAndReformatCsv(projectOwnersTextBox.getText())); } @UiHandler("projectEditorsTextArea") protected void onEditorsChange(ChangeEvent event) { projectEditorsTextArea.setText(StringUtil.trimAndReformatCsv(projectEditorsTextArea.getText())); } @UiHandler("projectViewersTextArea") protected void onViewersChange(ChangeEvent event) { projectViewersTextArea.setText(StringUtil.trimAndReformatCsv(projectViewersTextArea.getText())); } /** * Handler for the updateProjectInfoButton's click event. */ @UiHandler("updateProjectInfoButton") protected void onUpdateProjectInfoButtonClicked(ClickEvent event) { savedPanel.setVisible(false); updateProjectInfoButton.setEnabled(false); if (presenter != null) { if (deleteProjectCheckBox.getValue()) { presenter.removeProject(); reloadPage(); } else { final List<String> newOwners = StringUtil.csvToList(projectOwnersTextBox.getText()); final List<String> newEditors = StringUtil.csvToList(projectEditorsTextArea.getText()); final List<String> newViewers = StringUtil.csvToList(projectViewersTextArea.getText()); if (newOwners.size() < 1) { Window.alert("Error: The project must have at least one owner."); return; } StringBuilder warning = new StringBuilder(); List<String> difference = StringUtil.subtractList(newOwners, currentOwners); if (difference.size() > 0) { warning.append("<br><br><b>Added owners:</b> "); warning.append(SafeHtmlUtils.htmlEscape(StringUtil.listToCsv(difference))); } difference = StringUtil.subtractList(currentOwners, newOwners); if (difference.size() > 0) { warning.append("<br><br><b>Removed owners:</b> "); warning.append(SafeHtmlUtils.htmlEscape(StringUtil.listToCsv(difference))); } difference = StringUtil.subtractList(newEditors, currentEditors); if (difference.size() > 0) { warning.append("<br><br><b>Added editors:</b> "); warning.append(SafeHtmlUtils.htmlEscape(StringUtil.listToCsv(difference))); } difference = StringUtil.subtractList(currentEditors, newEditors); if (difference.size() > 0) { warning.append("<br><br><b>Removed editors:</b> "); warning.append(SafeHtmlUtils.htmlEscape(StringUtil.listToCsv(difference))); } difference = StringUtil.subtractList(newViewers, currentViewers); if (difference.size() > 0) { warning.append("<br><br><b>Added viewers:</b> "); warning.append(SafeHtmlUtils.htmlEscape(StringUtil.listToCsv(difference))); } difference = StringUtil.subtractList(currentViewers, newViewers); if (difference.size() > 0) { warning.append("<br><br><b>Removed viewers:</b> "); warning.append(SafeHtmlUtils.htmlEscape(StringUtil.listToCsv(difference))); } // If there's a warning to save, then display it and require confirmation before saving. // Otherwise, just save. if (warning.length() > 0) { StandardDialogBox box = new StandardDialogBox(); box.setTitle("Permission Changes"); box.add(new HTML("You are changing some of the permissions for this project." + warning.toString() + "<br><br>")); box.addDialogClosedHandler(new DialogClosedHandler() { @Override public void onDialogClosed(DialogClosedEvent event) { if (event.getResult().equals(DialogResult.OK)) { presenter.onUpdateProjectInfoClicked(projectName.getText(), projectDescription.getText(), newOwners, newEditors, newViewers, projectIsPublicCheckBox.getValue()); currentOwners = newOwners; currentEditors = newEditors; currentViewers = newViewers; } else { updateProjectInfoButton.setEnabled(true); } } }); StandardDialogBox.showAsDialog(box); } else { presenter.onUpdateProjectInfoClicked(projectName.getText(), projectDescription.getText(), newOwners, newEditors, newViewers, projectIsPublicCheckBox.getValue()); } } } } @Override public void showSaved() { updateProjectInfoButton.setEnabled(true); savedPanel.setVisible(true); Timer timer = new Timer() { @Override public void run() { savedPanel.setVisible(false); } }; // Make the saved item disappear after 10 seconds. timer.schedule(10000); } /** * Handler for the deleteProjectButton's click event. Deletes the project. */ @UiHandler("deleteProjectCheckBox") void onDeleteProjectCheckBoxChecked(ClickEvent event) { String warningMessage = "This will permanently delete your project when you click save." + " Are you sure?"; if (!Window.confirm(warningMessage)) { deleteProjectCheckBox.setValue(false); } } /** * Reloads the current web page. */ public void reloadPage() { History.newItem("/homepage"); } /** * Binds this View to the given Presenter. */ @Override public void setPresenter(Presenter presenter) { this.presenter = presenter; } /** Updates the view to enable editing project data given the access level. */ @Override public void enableProjectEditing(ProjectAccess userAccessLevel) { // Enable certain controls only if they have OWNER access. if (userAccessLevel.hasAccess(ProjectAccess.OWNER_ACCESS)) { projectOwnersTextBox.setEnabled(true); deleteApplicationSection.setVisible(true); publicPanel.setVisible(true); } // Enable other widgets only if they have EDIT access. if (userAccessLevel.hasAccess(ProjectAccess.EDIT_ACCESS)) { projectName.setEnabled(true); projectDescription.setEnabled(true); projectEditorsTextArea.setEnabled(true); projectViewersTextArea.setEnabled(true); updateProjectInfoButton.setEnabled(true); } } /** * Updates the UI with the given project information. */ @Override public void setProjectSettings(Project projectInformation) { currentOwners = projectInformation.getProjectOwners(); currentEditors = projectInformation.getProjectEditors(); currentViewers = projectInformation.getProjectViewers(); projectName.setText(projectInformation.getName()); projectDescription.setText(projectInformation.getDescription()); projectOwnersTextBox.setText(StringUtil.listToCsv(currentOwners)); projectEditorsTextArea.setText(StringUtil.listToCsv(currentEditors)); projectViewersTextArea.setText(StringUtil.listToCsv(currentViewers)); projectIsPublicCheckBox.setValue(projectInformation.getIsPubliclyVisible()); } }