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// $Id$
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/**
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* Copyright (C) 2015 EDIT
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* European Distributed Institute of Taxonomy
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* http://www.e-taxonomy.eu
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*
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* The contents of this file are subject to the Mozilla Public License Version 1.1
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* See LICENSE.TXT at the top of this package for the full license terms.
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*/
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package eu.etaxonomy.cdm.vaadin.util;
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import java.util.ArrayList;
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import java.util.Date;
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import java.util.List;
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import org.apache.log4j.Logger;
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import com.vaadin.server.Page;
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import com.vaadin.ui.Notification;
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import com.vaadin.ui.Notification.Type;
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import com.vaadin.ui.UI;
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import eu.etaxonomy.cdm.vaadin.component.CdmProgressComponent;
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import eu.etaxonomy.cdm.vaadin.session.CdmChangeEvent;
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/**
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* @author cmathew
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* @date 14 Apr 2015
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*
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*/
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public abstract class CdmVaadinOperation implements Runnable {
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private static final Logger logger = Logger.getLogger(CdmVaadinOperation.class);
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private int pollInterval = -1;
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private CdmProgressComponent progressComponent;
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private boolean opDone = false;
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List<CdmChangeEvent> events = new ArrayList<CdmChangeEvent>();
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private Date now = new java.util.Date();
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private Exception exception;
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public CdmVaadinOperation(int pollInterval, CdmProgressComponent progressComponent) {
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this.pollInterval = pollInterval;
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this.progressComponent = progressComponent;
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UI.getCurrent().setPollInterval(pollInterval);
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// comment out below for debugging
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// logger.warn(new Timestamp(now.getTime()) + " : set polling interval to " + pollInterval);
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// UI.getCurrent().addPollListener(new UIEvents.PollListener() {
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// @Override
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// public void poll(UIEvents.PollEvent event) {
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// logger.warn( new Timestamp(now.getTime()) + " : polling");
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// }
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// });
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}
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public CdmVaadinOperation() {
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}
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public void setProgress(final String progressText) {
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if(progressComponent == null) {
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return;
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}
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if(isAsync()) {
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UI.getCurrent().access(new Runnable() {
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@Override
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public void run() {
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progressComponent.setProgress(progressText);
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//logger.warn("set progress spinner");
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}
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});
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} else {
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progressComponent.setProgress(progressText);
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}
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}
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public void setProgress(final String progressText, final float progress) {
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if(progressComponent == null) {
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return;
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}
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if(isAsync()) {
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UI.getCurrent().access(new Runnable() {
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@Override
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public void run() {
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progressComponent.setProgress(progressText, progress);
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}
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});
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} else {
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progressComponent.setProgress(progressText, progress);
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}
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}
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public void endProgress() {
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if(progressComponent == null) {
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return;
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}
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if(isAsync()) {
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UI.getCurrent().access(new Runnable() {
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@Override
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public void run() {
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progressComponent.setVisible(false);
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}
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});
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} else {
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progressComponent.setVisible(false);
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}
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}
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/* (non-Javadoc)
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* @see java.lang.Runnable#run()
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*/
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@Override
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public void run() {
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try {
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final boolean success = execute();
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//logger.warn(new Timestamp(now.getTime()) + " : ran execute");
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if(isAsync()) {
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UI.getCurrent().access(new Runnable() {
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@Override
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public void run() {
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try {
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if(success) {
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fireDelayedEvents();
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}
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if(exception != null) {
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Notification notification = new Notification(exception.getMessage(), "", Type.WARNING_MESSAGE);
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notification.show(Page.getCurrent());
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exception = null;
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}
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postOpUIUpdate(success);
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//logger.warn(new Timestamp(now.getTime()) + " : ran postOpUIUpdate ");
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} finally {
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UI.getCurrent().setPollInterval(-1);
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opDone = true;
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//logger.warn(new Timestamp(now.getTime()) + " : switched off pollling");
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}
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}
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});
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} else {
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postOpUIUpdate(success);
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}
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} finally {
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endProgress();
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}
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}
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public abstract boolean execute();
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public void postOpUIUpdate(boolean isOpSuccess) {}
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public void fireEvent(CdmChangeEvent event, boolean async) {
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CdmVaadinSessionUtilities.getCurrentCdmDataChangeService().fireChangeEvent(event, async);
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}
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public void registerDelayedEvent(CdmChangeEvent event) {
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events.add(event);
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}
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private void fireDelayedEvents() {
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for(CdmChangeEvent event : events) {
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fireEvent(event, false);
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}
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events.clear();
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}
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public boolean isAsync() {
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return pollInterval > 0;
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}
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/**
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* @return the exception
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*/
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public Exception getException() {
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return exception;
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}
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/**
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* @param exception the exception to set
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*/
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public void setException(Exception exception) {
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this.exception = exception;
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}
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}
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