Java tutorial
/* This file is part of Intake24. Copyright 2015, 2016 Newcastle University. 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. This file is based on Intake24 v1.0. Crown copyright, 2012, 2013, 2014 Licensed under the Open Government Licence 3.0: http://www.nationalarchives.gov.uk/doc/open-government-licence/ */ package uk.ac.ncl.openlab.intake24.client.survey.prompts; import com.google.gwt.event.dom.client.ClickEvent; import com.google.gwt.event.dom.client.ClickHandler; import com.google.gwt.safehtml.shared.SafeHtml; import com.google.gwt.safehtml.shared.SafeHtmlUtils; import com.google.gwt.user.client.ui.*; import org.pcollections.PVector; import org.pcollections.TreePVector; import org.workcraft.gwt.shared.client.Callback; import org.workcraft.gwt.shared.client.Callback1; import org.workcraft.gwt.shared.client.Function1; import org.workcraft.gwt.shared.client.Option; import uk.ac.ncl.openlab.intake24.client.LocaleUtil; import uk.ac.ncl.openlab.intake24.client.survey.*; import uk.ac.ncl.openlab.intake24.client.survey.prompts.messages.HelpMessages; import uk.ac.ncl.openlab.intake24.client.survey.prompts.messages.PromptMessages; import uk.ac.ncl.openlab.intake24.client.ui.WidgetFactory; import uk.ac.ncl.openlab.intake24.client.ui.foodlist.EditableFoodList; import java.util.List; public class EditMealPrompt implements Prompt<Meal, MealOperation> { private final Meal meal; private EditableFoodList foodList; private EditableFoodList drinkList; 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("mealName", "#intake24-meal-name", helpMessages.editMeal_mealNameTitle(), helpMessages.editMeal_mealNameDescription())) .plus(new ShepherdTour.Step("foodList", "#intake24-food-list", helpMessages.editMeal_foodListTitle(), helpMessages.editMeal_foodListDescription())) .plus(new ShepherdTour.Step("drinkList", "#intake24-drink-list", helpMessages.editMeal_drinkListTitle(), helpMessages.editMeal_drinkListDescription())) .plus(new ShepherdTour.Step("changeTimeButton", "#intake24-change-time-button", helpMessages.editMeal_changeTimeButtonTitle(), helpMessages.editMeal_changeTimeButtonDescription())) .plus(new ShepherdTour.Step("deleteMealButton", "#intake24-delete-button", helpMessages.editMeal_deleteMealButtonTitle(), helpMessages.editMeal_deleteMealButtonDescription())) .plus(new ShepherdTour.Step("continueButton", "#intake24-done-button", helpMessages.editMeal_continueButtonTitle(), helpMessages.editMeal_continueButtonDescription(), "top right", "bottom right")); private final boolean addDrink; public EditMealPrompt(final Meal meal, boolean addDrink) { this.meal = meal; this.addDrink = addDrink; } @Override public SurveyStageInterface getInterface(final Callback1<MealOperation> onComplete, final Callback1<Function1<Meal, Meal>> onIntermediateStateChange) { final SafeHtml promptText = SafeHtmlUtils .fromSafeConstant(messages.editMeal_promptText(SafeHtmlUtils.htmlEscape(meal.name.toLowerCase()))); final Function1<FoodEntry, Boolean> foodFilter = new Function1<FoodEntry, Boolean>() { @Override public Boolean apply(FoodEntry argument) { return !argument.isDrink(); } }; final Function1<FoodEntry, Boolean> drinkFilter = new Function1<FoodEntry, Boolean>() { @Override public Boolean apply(FoodEntry argument) { return argument.isDrink(); } }; final Button done = WidgetFactory.createGreenButton(messages.editMeal_finishButtonLabel(), "editMealFinishButton", new ClickHandler() { @Override public void onClick(ClickEvent event) { onComplete.call(new MealOperation() { @Override public <R> R accept(Visitor<R> visitor) { return visitor.visitUpdate(new Function1<Meal, Meal>() { @Override public Meal apply(Meal argument) { return argument .withFoods(TreePVector.<FoodEntry>empty() .plusAll(foodList.getEnteredItems()) .plusAll(drinkList.getEnteredItems())) .markFreeEntryComplete().clearAssociatedFoodsComplete(); } }); } }); } }); done.getElement().setId("intake24-done-button"); final Callback1<List<FoodEntry>> onChange = new Callback1<List<FoodEntry>>() { @Override public void call(List<FoodEntry> arg1) { TreePVector<FoodEntry> newItems = TreePVector.<FoodEntry>empty().plusAll(foodList.getEnteredItems()) .plusAll(drinkList.getEnteredItems()); onIntermediateStateChange.call(Meal.updateFoodsFunc(newItems)); } }; // Food list foodList = new EditableFoodList(meal.foods, foodFilter, messages.editMeal_addFoodButtonLabel(), false, onChange); final HTMLPanel foodHeader = new HTMLPanel("h2", SafeHtmlUtils.htmlEscape(messages.editMeal_foodHeader())); final FlowPanel foodListContainer = new FlowPanel(); foodListContainer.getElement().setId("intake24-food-list"); foodListContainer.add(foodHeader); foodListContainer.add(foodList); ShepherdTour.makeShepherdTarget(foodListContainer); // Drinks list drinkList = new EditableFoodList(meal.foods, drinkFilter, messages.editMeal_addDrinkButtonLabel(), true, onChange); final HTMLPanel drinksHeader = new HTMLPanel("h2", SafeHtmlUtils.htmlEscape(messages.editMeal_drinksHeader())); drinkList.getElement().setId("intake24-drink-list"); final FlowPanel drinkListContainer = new FlowPanel(); drinkListContainer.getElement().setId("intake24-drink-list"); drinkListContainer.add(drinksHeader); drinkListContainer.add(drinkList); ShepherdTour.makeShepherdTarget(drinkListContainer); Button changeTime = WidgetFactory.createButton(messages.editMeal_changeTimeButtonLabel(), new ClickHandler() { @Override public void onClick(ClickEvent event) { onComplete.call(MealOperation.editTimeRequest); } }); changeTime.getElement().setId("intake24-change-time-button"); Button delete = WidgetFactory.createButton(messages.editMeal_deleteMealButtonLabel(), new ClickHandler() { @Override public void onClick(ClickEvent event) { onComplete.call(MealOperation.deleteRequest(true)); } }); delete.getElement().setId("intake24-delete-button"); final HTMLPanel header = new HTMLPanel("h1", LocaleUtil.capitaliseFirstCharacter(meal.safeNameWithTime())); header.getElement().setId("intake24-meal-name"); ShepherdTour.makeShepherdTarget(header); FlowPanel contents = new FlowPanel(); contents.addStyleName("intake24-edit-meal-prompt"); contents.add(header); Panel promptPanel = WidgetFactory.createPromptPanel(promptText, ShepherdTour.createTourButton(tour, EditMealPrompt.class.getSimpleName())); contents.add(promptPanel); ShepherdTour.makeShepherdTarget(promptPanel); contents.add(foodListContainer); contents.add(drinkListContainer); contents.add(WidgetFactory.createButtonsPanel(changeTime, delete, done)); ShepherdTour.makeShepherdTarget(changeTime, delete, done); return new SurveyStageInterface.Aligned(contents, HasHorizontalAlignment.ALIGN_LEFT, HasVerticalAlignment.ALIGN_TOP, SurveyStageInterface.DEFAULT_OPTIONS, EditMealPrompt.class.getSimpleName(), Option.<Callback>some(new Callback() { @Override public void call() { if (addDrink) drinkList.focusNew(); } })); } @Override public String toString() { return "Edit meal prompt"; } }