net.scran24.user.client.surveyscheme.FoodSourcesPrompt.java Source code

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Here is the source code for net.scran24.user.client.surveyscheme.FoodSourcesPrompt.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.surveyscheme;

import static org.workcraft.gwt.shared.client.CollectionUtils.map;
import static org.workcraft.gwt.shared.client.CollectionUtils.zipWithIndex;
import net.scran24.common.client.WidgetFactory;
import net.scran24.user.client.survey.SurveyStageInterface;
import net.scran24.user.client.survey.flat.Prompt;
import net.scran24.user.client.survey.prompts.MealOperation;
import net.scran24.user.shared.FoodEntry;
import net.scran24.user.shared.Meal;

import org.pcollections.client.PVector;
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.FlowPanel;
import com.google.gwt.user.client.ui.Grid;
import com.google.gwt.user.client.ui.HasHorizontalAlignment;
import com.google.gwt.user.client.ui.HasVerticalAlignment;
import com.google.gwt.user.client.ui.Label;
import com.google.gwt.user.client.ui.ListBox;

public class FoodSourcesPrompt implements Prompt<Meal, MealOperation> {
    private final Meal meal;
    private final PVector<String> sourceOptions;
    private final String mainSourceOption;

    public FoodSourcesPrompt(Meal meal, PVector<String> sourceOptions, String mainSourceOption) {
        this.meal = meal;
        this.sourceOptions = sourceOptions;
        this.mainSourceOption = mainSourceOption;
    }

    private ListBox createSourceChoice(String existingChoice) {
        ListBox result = new ListBox(false);

        if (!sourceOptions.contains(mainSourceOption))
            result.addItem(mainSourceOption);

        for (String s : sourceOptions)
            result.addItem(s);

        if (existingChoice != null)
            result.setSelectedIndex(sourceOptions.indexOf(existingChoice));
        else
            result.setSelectedIndex(sourceOptions.indexOf(mainSourceOption));

        return result;
    }

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

        FlowPanel content = new FlowPanel();

        /* PVector<WithIndex<FoodEntry>> foodsToShow = filter(zipWithIndex(meal.foods), new Function1<WithIndex<FoodEntry>, Boolean>() {
           @Override
           public Boolean apply(WithIndex<FoodEntry> argument) {
        return !argument.value.customData.containsKey("foodSource");
           }
        }); */

        content.add(WidgetFactory.createPromptPanel(
                SafeHtmlUtils.fromSafeConstant("<p>If some of the food items that you had for your <strong>"
                        + meal.safeName() + "</strong> came from a place other than "
                        + SafeHtmlUtils.htmlEscape(mainSourceOption.toLowerCase())
                        + ", please indicate where did you get those.</p>")));

        Grid foodSourceChoice = new Grid(meal.foods.size() + 1, 2);
        foodSourceChoice.setCellPadding(5);
        foodSourceChoice.setWidget(0, 0, new Label("Food"));
        foodSourceChoice.setWidget(0, 1, new Label("Source"));

        final ListBox[] sourceChoices = new ListBox[meal.foods.size()];

        for (int i = 0; i < meal.foods.size(); i++) {
            sourceChoices[i] = createSourceChoice(meal.foods.get(i).customData.get("foodSource"));

            foodSourceChoice.setWidget(i + 1, 0,
                    new Label(SafeHtmlUtils.htmlEscape(meal.foods.get(i).description())));
            foodSourceChoice.setWidget(i + 1, 1, sourceChoices[i]);
        }

        content.add(foodSourceChoice);

        Button finished = WidgetFactory.createButton("Continue", new ClickHandler() {
            @Override
            public void onClick(ClickEvent event) {
                onComplete.call(MealOperation.update(new Function1<Meal, Meal>() {
                    @Override
                    public Meal apply(Meal meal) {
                        return meal.withFoods(
                                map(zipWithIndex(meal.foods), new Function1<WithIndex<FoodEntry>, FoodEntry>() {
                                    @Override
                                    public FoodEntry apply(WithIndex<FoodEntry> argument) {
                                        return argument.value.withCustomDataField("foodSource",
                                                sourceChoices[argument.index].getValue(
                                                        sourceChoices[argument.index].getSelectedIndex()));
                                    }
                                }));
                    }
                }));
            }
        });

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

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

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