org.rubicone.poc.vpush.uil.sending.SendingUI.java Source code

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Here is the source code for org.rubicone.poc.vpush.uil.sending.SendingUI.java

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/*
 * Copyright 2017 Jaroslav Bien.
 *
 * 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 org.rubicone.poc.vpush.uil.sending;

import com.vaadin.annotations.Theme;
import com.vaadin.cdi.CDIUI;
import com.vaadin.icons.VaadinIcons;
import com.vaadin.server.ExternalResource;
import com.vaadin.server.VaadinRequest;
import com.vaadin.shared.ui.ContentMode;
import com.vaadin.shared.ui.ValueChangeMode;
import com.vaadin.ui.Button;
import com.vaadin.ui.FormLayout;
import com.vaadin.ui.Label;
import com.vaadin.ui.Link;
import com.vaadin.ui.Panel;
import com.vaadin.ui.TextField;
import com.vaadin.ui.UI;
import com.vaadin.ui.VerticalLayout;
import com.vaadin.ui.themes.ValoTheme;
import java.util.Date;
import javax.inject.Inject;
import org.rubicone.poc.vpush.bll.messaging.CDIBroadcaster;

@CDIUI("")
@Theme("vaadincdiuipushpoctheme")
public class SendingUI extends UI {

    @Inject
    private CDIBroadcaster broadcaster;

    private VerticalLayout sentMessages;

    @Override
    protected void init(VaadinRequest request) {
        this.initializeUI();
    }

    private void initializeUI() {
        VerticalLayout mainLayout = new VerticalLayout();
        super.setContent(mainLayout);

        mainLayout.addComponent(this.createTitleLabel());

        mainLayout.addComponent(this.createInstructionsPanel());

        mainLayout.addComponent(this.createPushMessageSendingForm());

        mainLayout.addComponent(this.createSentMessagesPanel());
    }

    private Label createTitleLabel() {
        Label titleLabel = new Label("sending push messages");

        titleLabel.addStyleName(ValoTheme.LABEL_HUGE);

        return titleLabel;
    }

    private Panel createInstructionsPanel() {
        Panel instructionsPanel = new Panel("instructions");

        VerticalLayout instructionsLayout = new VerticalLayout();
        instructionsPanel.setContent(instructionsLayout);

        Label instructionsLabel = new Label(
                "open another UI receiving notifications from server using following transport:");
        instructionsLayout.addComponent(instructionsLabel);

        Link websocketsUILink = new Link("websockets", new ExternalResource("./receive-messages-websockets"));
        websocketsUILink.setIcon(VaadinIcons.CHEVRON_RIGHT_SMALL);
        websocketsUILink.setTargetName("_blank");
        instructionsLayout.addComponent(websocketsUILink);

        Link websocketsXhrUILink = new Link("websockets + XHR",
                new ExternalResource("./receive-messages-websocketsxhr"));
        websocketsXhrUILink.setIcon(VaadinIcons.CHEVRON_RIGHT_SMALL);
        websocketsXhrUILink.setTargetName("_blank");
        instructionsLayout.addComponent(websocketsXhrUILink);

        Link httpLongPollingUILink = new Link("HTTP long polling",
                new ExternalResource("./receive-messages-httplongpolling"));
        httpLongPollingUILink.setIcon(VaadinIcons.CHEVRON_RIGHT_SMALL);
        httpLongPollingUILink.setTargetName("_blank");
        instructionsLayout.addComponent(httpLongPollingUILink);

        Label noteLabel = new Label(
                "<i>" + VaadinIcons.INFO_CIRCLE_O.getHtml()
                        + " note: you may open several UIs at the same time to receive push notifications</i>",
                ContentMode.HTML);
        noteLabel.addStyleName(ValoTheme.LABEL_TINY);
        instructionsLayout.addComponents(noteLabel);

        return instructionsPanel;
    }

    private FormLayout createPushMessageSendingForm() {
        FormLayout pushMessageSendingForm = new FormLayout();

        Panel pushMessageSendingPanel = new Panel("push message sending form");
        pushMessageSendingPanel.setContent(pushMessageSendingForm);

        TextField inputField = new TextField("text to send");
        inputField.setValueChangeMode(ValueChangeMode.EAGER);
        pushMessageSendingForm.addComponent(inputField);

        Button sendButton = new Button("send", VaadinIcons.LOCATION_ARROW);
        sendButton.setDisableOnClick(true);
        sendButton.setEnabled(false);
        sendButton.addClickListener(event -> {
            this.broadcaster.broadcast(inputField.getValue());
            this.sentMessages.addComponent(new Label(new Date() + ": " + inputField.getValue()));
            inputField.setValue("");
        });

        inputField.addValueChangeListener(event -> {
            sendButton.setEnabled(!event.getValue().isEmpty());
        });

        pushMessageSendingForm.addComponent(sendButton);

        return pushMessageSendingForm;
    }

    private Panel createSentMessagesPanel() {
        Panel sentMessagesPanel = new Panel("sent messages");

        this.sentMessages = new VerticalLayout();

        sentMessagesPanel.setContent(this.sentMessages);

        return sentMessagesPanel;
    }

}