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

Introduction

Here is the source code for net.scran24.user.client.survey.prompts.ReadyMealsPrompt.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 static org.workcraft.gwt.shared.client.CollectionUtils.filter;
import static org.workcraft.gwt.shared.client.CollectionUtils.zipWithIndex;

import java.util.HashMap;
import java.util.Map;

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.Prompt;
import net.scran24.user.client.survey.prompts.messages.HelpMessages;
import net.scran24.user.client.survey.prompts.messages.PromptMessages;
import net.scran24.user.shared.CompoundFood;
import net.scran24.user.shared.TemplateFood;
import net.scran24.user.shared.EncodedFood;
import net.scran24.user.shared.FoodEntry;
import net.scran24.user.shared.Meal;
import net.scran24.user.shared.MissingFood;
import net.scran24.user.shared.RawFood;

import org.pcollections.client.PVector;
import org.pcollections.client.TreePVector;
import org.workcraft.gwt.shared.client.Callback1;
import org.workcraft.gwt.shared.client.CollectionUtils.WithIndex;
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.safehtml.shared.SafeHtmlUtils;
import com.google.gwt.user.client.ui.Button;
import com.google.gwt.user.client.ui.CheckBox;
import com.google.gwt.user.client.ui.FlowPanel;
import com.google.gwt.user.client.ui.HasHorizontalAlignment;
import com.google.gwt.user.client.ui.HasVerticalAlignment;

public class ReadyMealsPrompt implements Prompt<Meal, MealOperation> {
    private final static PromptMessages messages = PromptMessages.Util.getInstance();
    private final static HelpMessages helpMessages = HelpMessages.Util.getInstance();

    private final static PVector<ShepherdTour.Step> tour = TreePVector.<ShepherdTour.Step>empty()
            .plus(new ShepherdTour.Step("brandNameList", "#intake24-ready-meals-list",
                    helpMessages.readyMeals_listTitle(), helpMessages.readyMeals_listDescription()))
            .plus(new ShepherdTour.Step("cont", "#intake24-ready-meals-finished-button",
                    helpMessages.readyMeals_finishedButtonTitle(),
                    helpMessages.readyMeals_finishedButtonDescription()));

    private final Meal meal;

    public ReadyMealsPrompt(Meal meal) {
        this.meal = meal;
    }

    @Override
    public SurveyStageInterface getInterface(final Callback1<MealOperation> onComplete,
            final Callback1<Function1<Meal, Meal>> onIntermediateStateChange) {

        FlowPanel content = new FlowPanel();

        FlowPanel promptPanel = WidgetFactory.createPromptPanel(
                SafeHtmlUtils.fromSafeConstant(
                        messages.readyMeals_promptText(SafeHtmlUtils.htmlEscape(meal.name.toLowerCase()))),
                ShepherdTour.createTourButton(tour, ReadyMealsPrompt.class.getSimpleName()));
        ShepherdTour.makeShepherdTarget(promptPanel);

        content.add(promptPanel);

        PVector<WithIndex<FoodEntry>> potentialReadyMeals = filter(zipWithIndex(meal.foods),
                new Function1<WithIndex<FoodEntry>, Boolean>() {
                    @Override
                    public Boolean apply(WithIndex<FoodEntry> argument) {
                        return argument.value.accept(new FoodEntry.Visitor<Boolean>() {

                            @Override
                            public Boolean visitRaw(RawFood food) {
                                return false;
                            }

                            @Override
                            public Boolean visitEncoded(EncodedFood food) {
                                return !food.isDrink() && !food.link.isLinked() && food.data.askIfReadyMeal;
                            }

                            @Override
                            public Boolean visitTemplate(TemplateFood food) {
                                return false;
                            }

                            @Override
                            public Boolean visitMissing(MissingFood food) {
                                return false;
                            }

                            @Override
                            public Boolean visitCompound(CompoundFood food) {
                                return false;
                            }
                        });
                    }
                });

        final Map<CheckBox, Integer> checkBoxToIndex = new HashMap<CheckBox, Integer>();

        FlowPanel checkboxesDiv = new FlowPanel();
        checkboxesDiv.addStyleName("scran24-ready-meals-checkboxes-block");
        checkboxesDiv.getElement().setId("intake24-ready-meals-list");

        for (WithIndex<FoodEntry> f : potentialReadyMeals) {
            FlowPanel rowDiv = new FlowPanel();

            CheckBox readyMealCheck = new CheckBox(SafeHtmlUtils.htmlEscape(f.value.description()));
            readyMealCheck.addStyleName("scran24-ready-meals-checkbox");

            checkBoxToIndex.put(readyMealCheck, f.index);

            rowDiv.add(readyMealCheck);

            checkboxesDiv.add(rowDiv);
        }

        content.add(checkboxesDiv);

        Button finishedButton = WidgetFactory.createButton(messages.editMeal_finishButtonLabel(),
                new ClickHandler() {
                    @Override
                    public void onClick(ClickEvent event) {
                        onComplete.call(MealOperation.update(new Function1<Meal, Meal>() {
                            @Override
                            public Meal apply(Meal argument) {
                                Meal result = argument;

                                for (CheckBox check : checkBoxToIndex.keySet()) {
                                    int index = checkBoxToIndex.get(check);
                                    result = (check.getValue())
                                            ? result.updateFood(index, result.foods.get(index).markReadyMeal())
                                            : result;
                                }

                                return result.markReadyMealsComplete();
                            }
                        }));
                    }
                });

        finishedButton.getElement().setId("intake24-ready-meals-finished-button");

        ShepherdTour.makeShepherdTarget(checkboxesDiv, finishedButton);

        content.add(WidgetFactory.createButtonsPanel(finishedButton));

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

    @Override
    public String toString() {
        return "Mark ready meals";
    }
}