openaz-xacml-pap-admin/src/main/java/org/apache/openaz/xacml/admin/view/windows/ObadviceEditorWindow.java

/*
 *  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.openaz.xacml.admin.jpa.Obadvice;
import org.apache.openaz.xacml.admin.view.fields.OaExpressionsField;
import com.vaadin.addon.jpacontainer.EntityItem;
import com.vaadin.data.Property.ValueChangeEvent;
import com.vaadin.data.Property.ValueChangeListener;
import com.vaadin.data.fieldgroup.FieldGroup;
import com.vaadin.data.fieldgroup.FieldGroup.CommitException;
import com.vaadin.data.fieldgroup.PropertyId;
import com.vaadin.ui.Button;
import com.vaadin.ui.Button.ClickEvent;
import com.vaadin.ui.Button.ClickListener;
import com.vaadin.ui.FormLayout;
import com.vaadin.ui.OptionGroup;
import com.vaadin.ui.TextArea;
import com.vaadin.ui.TextField;
import com.vaadin.ui.Window;

public class ObadviceEditorWindow extends Window {

	/*- VaadinEditorProperties={"grid":"RegularGrid,20","showGrid":true,"snapToGrid":true,"snapToObject":true,"movingGuides":false,"snappingDistance":10} */

	private static final long serialVersionUID = 1L;
	private ObadviceEditorWindow self = this;

	private FormLayout mainLayout = new FormLayout();
	
	@PropertyId("type")
	OptionGroup typeOption = new OptionGroup("Type");

	@PropertyId("xacmlId")
	TextField xacmlID = new TextField("Obligation Id");

	@PropertyId("description")
	TextArea descriptionField = new TextArea("Description");
	
	@PropertyId("fulfillOn")
	OptionGroup fulfillOption = new OptionGroup("Fullfill On");
	
	@PropertyId("obadviceExpressions")
	OaExpressionsField expressionsField; 
	//Table tableExpressions = new Table("Attribute Assignments");
	
	Button saveButton = new Button("Save");
	
	private FieldGroup fieldGroup = null;
	private final EntityItem<Obadvice> obad;
	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 caption 
	 */
	public ObadviceEditorWindow(EntityItem<Obadvice> obad) {
		this.setContent(mainLayout);
		//
		// Save
		//
		this.obad = obad;
		//
		// Initialize main layout
		//
		this.mainLayout.setMargin(true);
		this.mainLayout.setWidth("-1px");
		//
		// Initialize components
		//
		this.typeOption.setNullSelectionAllowed(false);
		this.typeOption.setImmediate(true);
		this.typeOption.setDescription("Select whether this is an obligation or advice");
		this.typeOption.addItem("Obligation");
		this.typeOption.addItem("Advice");
		
		this.fulfillOption.setNullSelectionAllowed(true);
		this.fulfillOption.setDescription("Optionally restrict the use of the obligation/advice to a Permit or a Deny");
		this.fulfillOption.addItem("Permit");
		this.fulfillOption.addItem("Deny");

		this.descriptionField.setNullRepresentation("");
		
		this.expressionsField = new OaExpressionsField(this.obad);
		//
		// Add our form components
		//
		this.mainLayout.addComponent(this.typeOption);
		this.mainLayout.addComponent(this.fulfillOption);
		this.mainLayout.addComponent(this.xacmlID);
		this.mainLayout.addComponent(this.descriptionField);
		this.mainLayout.addComponent(this.expressionsField);
//		this.mainLayout.addComponent(this.tableExpressions);
		this.mainLayout.addComponent(this.saveButton);
		//
		// Now bind those fields to the data
		//
		this.fieldGroup = new FieldGroup(obad);
		this.fieldGroup.bindMemberFields(this);
		//
		// Finish setting up
		//
		this.initializeButtons();
		this.initializeOptions();
		//
		// Set focus
		//
		this.xacmlID.focus();
	}
	
	private void initializeButtons() {
		this.saveButton.addClickListener(new ClickListener() {
			private static final long serialVersionUID = 1L;

			@Override
			public void buttonClick(ClickEvent event) {
				try {
					fieldGroup.commit();
					self.isSaved = true;
					self.close();
				} catch (CommitException e) {
					e.printStackTrace();
				}
			}
			
		});
	}
	
	private void initializeOptions() {
		self.setIDCaption();
		this.typeOption.addValueChangeListener(new ValueChangeListener() {
			private static final long serialVersionUID = 1L;

			@Override
			public void valueChange(ValueChangeEvent event) {
				self.setIDCaption();
			}
			
		});
	}
	
	private void setIDCaption() {
		String value = (String) self.typeOption.getValue();
		if (value.equals("Obligation")) {
			self.xacmlID.setCaption("Obligation Id");
		} else {
			self.xacmlID.setCaption("Advice Id");
		}		
	}
	
	public boolean isSaved() {
		return this.isSaved;
	}
	
	public void	discard() {
		//
		//  May be discarded automatically??
		//
		this.fieldGroup.discard();
	}

}