net.scran24.user.client.survey.prompts.BrandNamePrompt.java Source code

Introduction

Here is the source code for net.scran24.user.client.survey.prompts.BrandNamePrompt.java

Source

/*
This file is part of Intake24.
    
 Crown copyright, 2012, 2013, 2014.
    
This software is licensed under the Open Government Licence 3.0:
    
http://www.nationalarchives.gov.uk/doc/open-government-licence/
*/

package net.scran24.user.client.survey.prompts;

import java.util.List;

import net.scran24.common.client.WidgetFactory;
import net.scran24.user.client.ShepherdTour;
import net.scran24.user.client.survey.SurveyStageInterface;
import net.scran24.user.client.survey.flat.FoodOperation;
import net.scran24.user.client.survey.flat.Prompt;
import net.scran24.user.client.survey.prompts.messages.HelpMessages;
import net.scran24.user.client.survey.prompts.messages.PromptMessages;
import net.scran24.user.shared.EncodedFood;
import net.scran24.user.shared.FoodEntry;

import org.pcollections.client.PVector;
import org.pcollections.client.TreePVector;
import org.workcraft.gwt.shared.client.Callback1;
import org.workcraft.gwt.shared.client.Function1;

import com.google.gwt.event.dom.client.ClickEvent;
import com.google.gwt.event.dom.client.ClickHandler;
import com.google.gwt.event.logical.shared.ValueChangeEvent;
import com.google.gwt.event.logical.shared.ValueChangeHandler;
import com.google.gwt.safehtml.shared.SafeHtmlUtils;
import com.google.gwt.user.client.ui.Button;
import com.google.gwt.user.client.ui.FlowPanel;
import com.google.gwt.user.client.ui.HasHorizontalAlignment;
import com.google.gwt.user.client.ui.HasVerticalAlignment;
import com.google.gwt.user.client.ui.RadioButton;
import com.google.gwt.user.client.ui.VerticalPanel;

public class BrandNamePrompt implements Prompt<FoodEntry, FoodOperation> {
    private final static PromptMessages messages = PromptMessages.Util.getInstance();
    private final static HelpMessages helpMessages = HelpMessages.Util.getInstance();

    private final String description;
    private final List<String> brandNames;

    private String choice;

    private final static PVector<ShepherdTour.Step> tour = TreePVector.<ShepherdTour.Step>empty()
            .plus(new ShepherdTour.Step("brandNameList", "#intake24-brand-choice-panel",
                    helpMessages.brandName_brandListTitle(), helpMessages.brandName_brandListDescription()))
            .plus(new ShepherdTour.Step("cont", "#intake24-brand-continue-button",
                    helpMessages.brandName_continueButtonTitle(),
                    helpMessages.brandName_continueButtonDescription()));

    public BrandNamePrompt(String description, List<String> brandNames) {
        this.description = description;
        this.brandNames = brandNames;
    }

    public SurveyStageInterface getInterface(final Callback1<FoodOperation> onComplete,
            final Callback1<Function1<FoodEntry, FoodEntry>> onIntermediateStateChange) {

        final FlowPanel content = new FlowPanel();

        FlowPanel promptPanel = WidgetFactory.createPromptPanel(
                SafeHtmlUtils.fromSafeConstant(
                        messages.brandName_promptText(SafeHtmlUtils.htmlEscape(description.toLowerCase()))),
                ShepherdTour.createTourButton(tour, BrandNamePrompt.class.getSimpleName()));
        ShepherdTour.makeShepherdTarget(promptPanel);

        content.add(promptPanel);

        final Button contButton = WidgetFactory.createGreenButton(messages.brandName_continueButtonLabel(),
                new ClickHandler() {
                    @Override
                    public void onClick(ClickEvent event) {
                        onComplete.call(FoodOperation.updateEncoded(new Function1<EncodedFood, EncodedFood>() {
                            @Override
                            public EncodedFood apply(EncodedFood argument) {
                                return argument.withBrand(choice);
                            }
                        }));
                    }
                });

        contButton.setEnabled(false);
        contButton.getElement().setId("intake24-brand-continue-button");
        ShepherdTour.makeShepherdTarget(contButton);

        VerticalPanel panel = new VerticalPanel();

        for (final String name : brandNames) {
            RadioButton btn = new RadioButton("brand", name);
            btn.addValueChangeHandler(new ValueChangeHandler<Boolean>() {
                @Override
                public void onValueChange(ValueChangeEvent<Boolean> event) {
                    if (event.getValue())
                        choice = name;
                    contButton.setEnabled(true);
                }
            });
            panel.add(btn);
        }

        panel.setSpacing(4);
        panel.addStyleName("scran24-brand-name-choice-panel");
        panel.getElement().setId("intake24-brand-choice-panel");
        ShepherdTour.makeShepherdTarget(panel);

        content.add(panel);
        content.add(WidgetFactory.createButtonsPanel(contButton));

        return new SurveyStageInterface.Aligned(content, HasHorizontalAlignment.ALIGN_LEFT,
                HasVerticalAlignment.ALIGN_TOP, SurveyStageInterface.DEFAULT_OPTIONS);
    }

    @Override
    public String toString() {
        return "Brand name prompt";
    }
}