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 org.apache.commons.logging.Log; import org.apache.commons.logging.LogFactory; import org.apache.openaz.xacml.admin.XacmlAdminUI; import com.vaadin.annotations.AutoGenerated; import com.vaadin.data.Buffered.SourceException; import com.vaadin.data.Item; import com.vaadin.data.Property; import com.vaadin.data.Property.ValueChangeEvent; import com.vaadin.data.Property.ValueChangeListener; import com.vaadin.data.Validator.InvalidValueException; import com.vaadin.data.util.filter.SimpleStringFilter; import com.vaadin.data.util.sqlcontainer.SQLContainer; import com.vaadin.event.FieldEvents.TextChangeEvent; import com.vaadin.event.FieldEvents.TextChangeListener; import com.vaadin.event.ItemClickEvent; import com.vaadin.event.ItemClickEvent.ItemClickListener; import com.vaadin.event.ShortcutAction.KeyCode; 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.Table; import com.vaadin.ui.TextField; import com.vaadin.ui.UI; import com.vaadin.ui.VerticalLayout; import com.vaadin.ui.Window; public class FunctionSelectionWindow 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 Table tableFunctions; @AutoGenerated private TextField textFieldFilter; /** * */ private static final long serialVersionUID = 1L; private static Log logger = LogFactory.getLog(FunctionSelectionWindow.class); private final FunctionSelectionWindow self = this; private final String defaultFunctionID; private String selectedFunction = null; private boolean isSaved = false; private static SQLContainer highOrderFunctions = ((XacmlAdminUI) UI.getCurrent()).getHigherOrderBagContainer(); /* * Seems that when this view is created it may or may not be upper case. */ private static String PROPERTY_SHORTNAME = "shortname"; private static String PROPERTY_XACMLID = "xacmlid"; static { for (Object prop : FunctionSelectionWindow.highOrderFunctions.getContainerPropertyIds()) { logger.info("SQL Container Property Id: " + prop.toString()); if (prop.toString().equalsIgnoreCase(PROPERTY_SHORTNAME)) { PROPERTY_SHORTNAME = prop.toString(); } else if (prop.toString().equalsIgnoreCase(PROPERTY_XACMLID)) { PROPERTY_XACMLID = prop.toString(); } } } /** * 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. */ public FunctionSelectionWindow(String defaultFunction) { buildMainLayout(); //setCompositionRoot(mainLayout); setContent(mainLayout); // // Save // this.defaultFunctionID = defaultFunction; // // Close shortcut // this.setCloseShortcut(KeyCode.ESCAPE); // // Initialize GUI // this.initializeTextField(); this.initializeFunctions(); this.initializeButtons(); // // Set our focus // this.tableFunctions.focus(); } protected void initializeTextField() { // // Initialize GUI settings // this.textFieldFilter.setImmediate(true); // // Respond to the text change events // this.textFieldFilter.addTextChangeListener(new TextChangeListener() { private static final long serialVersionUID = 1L; SimpleStringFilter currentFilter = null; @Override public void textChange(TextChangeEvent event) { // // Remove current filter // if (this.currentFilter != null) { FunctionSelectionWindow.highOrderFunctions.removeContainerFilter(this.currentFilter); this.currentFilter = null; } // // Get the text // String value = event.getText(); if (value != null && value.length() > 0) { // // Add the new filter // this.currentFilter = new SimpleStringFilter(PROPERTY_SHORTNAME, value, true, false); FunctionSelectionWindow.highOrderFunctions.addContainerFilter(this.currentFilter); } } }); } protected void initializeFunctions() { // // Setup data source. Make sure there are no current filters // FunctionSelectionWindow.highOrderFunctions.removeAllContainerFilters(); this.tableFunctions.setContainerDataSource(FunctionSelectionWindow.highOrderFunctions); // // Initialize GUI properties // this.tableFunctions.setImmediate(true); this.tableFunctions.setNullSelectionAllowed(false); this.tableFunctions.setRequired(true); this.tableFunctions.setRequiredError("Please select a function."); this.tableFunctions.setSelectable(true); this.tableFunctions.setPageLength(15); this.tableFunctions.setVisibleColumns(new Object[] { PROPERTY_SHORTNAME, PROPERTY_XACMLID }); this.tableFunctions.setColumnHeaders(new String[] { "Short Function Name", "Xacml ID" }); // // Respond to selection events // this.tableFunctions.addValueChangeListener(new ValueChangeListener() { private static final long serialVersionUID = 1L; @Override public void valueChange(ValueChangeEvent event) { Object id = self.tableFunctions.getValue(); if (id != null) { Item item = FunctionSelectionWindow.highOrderFunctions.getItem(id); if (item == null) { return; } Property<?> property = item.getItemProperty(PROPERTY_XACMLID); if (property == null) { return; } selectedFunction = property.getValue().toString(); self.buttonSave.setEnabled(true); } else { self.buttonSave.setEnabled(false); } } }); // // Respond to double-click events // this.tableFunctions.addItemClickListener(new ItemClickListener() { private static final long serialVersionUID = 1L; @Override public void itemClick(ItemClickEvent event) { if (event.isDoubleClick()) { self.doSave(); } } }); // // Setup the default selection // this.buttonSave.setEnabled(false); if (this.defaultFunctionID != null) { for (Object id : FunctionSelectionWindow.highOrderFunctions.getItemIds()) { Item item = FunctionSelectionWindow.highOrderFunctions.getItem(id); if (item != null) { Property<?> property = item.getItemProperty(PROPERTY_XACMLID); if (property != null && property.getValue().toString().equals(this.defaultFunctionID)) { this.tableFunctions.select(id); break; } } } } } protected void initializeButtons() { this.buttonSave.addClickListener(new ClickListener() { private static final long serialVersionUID = 1L; @Override public void buttonClick(ClickEvent event) { self.doSave(); } }); } protected void doSave() { try { // // Commit changes // self.tableFunctions.commit(); // // We are saved // self.isSaved = true; // // Close the window // self.close(); } catch (SourceException | InvalidValueException e) { //NOPMD // // Nothing to do, Vaadin highlights // } } public boolean isSaved() { return this.isSaved; } public String getSelectedFunction() { return this.selectedFunction; } @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"); // textFieldFilter textFieldFilter = new TextField(); textFieldFilter.setCaption("Filter"); textFieldFilter.setImmediate(false); textFieldFilter.setWidth("-1px"); textFieldFilter.setHeight("-1px"); mainLayout.addComponent(textFieldFilter); // tableFunctions tableFunctions = new Table(); tableFunctions.setImmediate(false); tableFunctions.setDescription("Functions To Select From"); tableFunctions.setWidth("100.0%"); tableFunctions.setHeight("-1px"); mainLayout.addComponent(tableFunctions); mainLayout.setExpandRatio(tableFunctions, 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; } }