Java tutorial
/* * Licensed to the Apache Software Foundation (ASF) under one * or more contributor license agreements. See the NOTICE file * distributed with this work for additional information * regarding copyright ownership. The ASF licenses this file * to you 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 org.apache.openaz.xacml.admin.view.windows; import java.net.MalformedURLException; import java.net.URL; import java.util.List; import org.apache.openaz.xacml.admin.util.AdminNotification; import org.apache.openaz.xacml.api.pap.PDP; import org.apache.openaz.xacml.api.pap.PDPGroup; import com.vaadin.annotations.AutoGenerated; import com.vaadin.data.Buffered.SourceException; import com.vaadin.data.Validator; import com.vaadin.data.Validator.InvalidValueException; import com.vaadin.data.validator.RegexpValidator; import com.vaadin.ui.Alignment; import com.vaadin.ui.Button; import com.vaadin.ui.Button.ClickEvent; import com.vaadin.ui.Button.ClickListener; import com.vaadin.ui.TextArea; import com.vaadin.ui.TextField; import com.vaadin.ui.VerticalLayout; import com.vaadin.ui.Window; import elemental.events.KeyboardEvent.KeyCode; public class EditPDPWindow extends Window { /*- VaadinEditorProperties={"grid":"RegularGrid,20","showGrid":true,"snapToGrid":true,"snapToObject":true,"movingGuides":false,"snappingDistance":10} */ @AutoGenerated private VerticalLayout mainLayout; @AutoGenerated private Button buttonSave; @AutoGenerated private TextArea textDescription; @AutoGenerated private TextField textName; @AutoGenerated private TextField textId; /** * */ private static final long serialVersionUID = 1L; private final EditPDPWindow self = this; private final PDP pdp; private final List<PDPGroup> groups; private boolean isSaved = false; /** * The constructor should first build the main layout, set the * composition root and then do any custom initialization. * * The constructor will not be automatically regenerated by the * visual editor. * @param pdp */ public EditPDPWindow(PDP pdp, List<PDPGroup> list) { buildMainLayout(); //setCompositionRoot(mainLayout); setContent(mainLayout); // // Save data // this.pdp = pdp; this.groups = list; // // Initialize // this.initializeText(); this.initializeButton(); // // Keyboard short // this.setCloseShortcut(KeyCode.ESC); this.buttonSave.setClickShortcut(KeyCode.ENTER); // // Focus // this.textId.focus(); } protected void initializeText() { // // Initialize values // if (this.pdp != null) { this.textId.setValue(this.pdp.getId()); this.textName.setValue(this.pdp.getName()); this.textDescription.setValue(this.pdp.getDescription()); } // // // this.textId.setRequiredError("You must enter a valid id for the PDP."); this.textId.setNullRepresentation(""); this.textId.addValidator(new RegexpValidator("[\\w=,]", false, "Please enter a valid URL with no whitespace or \"=\" or \",\" characters.")); this.textId.addValidator(new Validator() { private static final long serialVersionUID = 1L; @Override public void validate(Object value) throws InvalidValueException { // // Cannot be null // if (value == null || value.toString().length() == 0) { throw new InvalidValueException("ID cannot be null."); } // // Make sure its a valid URL // try { new URL(value.toString()); } catch (MalformedURLException e) { throw new InvalidValueException( "The PDP URL '" + value.toString() + "' is not a valid URL: '" + e.getMessage() + "'"); } } }); // // // this.textName.setNullRepresentation(""); this.textName.addValidator(new Validator() { private static final long serialVersionUID = 1L; @Override public void validate(Object value) throws InvalidValueException { // // If the value is null, set it to the id // if (value == null || value.toString().length() == 0) { return; } } }); // // // this.textDescription.setNullRepresentation(""); } protected void initializeButton() { this.buttonSave.addClickListener(new ClickListener() { private static final long serialVersionUID = 1L; @Override public void buttonClick(ClickEvent event) { try { // // Do a commit // self.textName.commit(); self.textId.commit(); self.textDescription.commit(); // // Should be a string, but to be safe // String id = self.textId.getValue(); String name = self.textName.getValue(); if (name == null || name.isEmpty()) { self.textName.setValue(id); name = id; } // // ID must be unique. // Also the Name must be unique AND not match any existing IDs // because user uses the NAME to identify this PDP on the browser window, not the ID. // for (PDPGroup g : self.groups) { for (PDP p : g.getPdps()) { if (p.getId().equals(id)) { if (self.pdp != null) { // // we are editing this pdp // continue; } throw new InvalidValueException("URL must be unique - the PDP '" + id + "' already exists in group '" + g.getName() + "'"); } if (id.equals(p.getName())) { throw new InvalidValueException("A previous PDP with URL '" + p.getId() + "' has been given the name '" + id + "'. Please edit that PDP to change the name before creating a nwe PDP with this URL."); } if (name != null && name.length() > 0 && self.pdp == null && (p.getId().equals(name) || name.equals(p.getName()))) { throw new InvalidValueException( "Name must not be the same as another PDP's name OR another PDP's URL."); } } } // // make sure name is NOT a URL, unless it is identical to the ID. // (If it is a URL, then a later PDP might be created with that URL as it's ID, which would be confusing.) // if (!id.equals(name)) { try { new URL(name); // if we get here the name is a URL but not identical to the id, which is not good AdminNotification .warn("The Name must not be a URL unless it is the same as the PDP URL"); return; } catch (Exception e) { //NOPMD // ignore - we want to get here } } // // If we get here the inputs are ok // self.isSaved = true; // // // self.close(); } catch (SourceException | InvalidValueException e1) { //NOPMD // // Vaadin will display error // } } }); } public boolean isSaved() { return this.isSaved; } public String getPDPId() { return this.textId.getValue(); } public String getPDPName() { return this.textName.getValue(); } public String getPDPDescription() { return this.textDescription.getValue(); } @AutoGenerated private VerticalLayout buildMainLayout() { // common part: create layout mainLayout = new VerticalLayout(); mainLayout.setImmediate(false); mainLayout.setWidth("-1px"); mainLayout.setHeight("-1px"); mainLayout.setMargin(true); mainLayout.setSpacing(true); // top-level component properties setWidth("-1px"); setHeight("-1px"); // textId textId = new TextField(); textId.setCaption("PDP URL"); textId.setImmediate(false); textId.setDescription("The URL is the ID of the PDP"); textId.setWidth("-1px"); textId.setHeight("-1px"); textId.setRequired(true); textId.setInputPrompt("Eg. http://localhost:8080/pdp"); mainLayout.addComponent(textId); // textName textName = new TextField(); textName.setCaption("PDP Name"); textName.setImmediate(false); textName.setWidth("-1px"); textName.setHeight("-1px"); mainLayout.addComponent(textName); // textDescription textDescription = new TextArea(); textDescription.setCaption("PDP Description"); textDescription.setImmediate(false); textDescription.setWidth("100.0%"); textDescription.setHeight("-1px"); textDescription.setNullSettingAllowed(true); mainLayout.addComponent(textDescription); mainLayout.setExpandRatio(textDescription, 1.0f); // buttonSave buttonSave = new Button(); buttonSave.setCaption("Save"); buttonSave.setImmediate(true); buttonSave.setWidth("-1px"); buttonSave.setHeight("-1px"); mainLayout.addComponent(buttonSave); mainLayout.setComponentAlignment(buttonSave, new Alignment(48)); return mainLayout; } }