Java tutorial
/* * Copyright 2010 Google Inc. * * 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 com.google.mobile.trippy.web.client.presenter.header; import com.google.common.base.Preconditions; import com.google.gwt.user.client.Window; import com.google.gwt.user.client.rpc.AsyncCallback; import com.google.mobile.trippy.web.client.TrippyBundle; import com.google.mobile.trippy.web.client.base.Constants; import com.google.mobile.trippy.web.client.base.Provider; import com.google.mobile.trippy.web.client.base.SingletonComponents; import com.google.mobile.trippy.web.client.event.SearchClickEvent; import com.google.mobile.trippy.web.client.event.SearchClickEventHandler; import com.google.mobile.trippy.web.client.event.ShareTripEvent; import com.google.mobile.trippy.web.client.event.ShowHomePageEvent; import com.google.mobile.trippy.web.client.event.ShowTripOnMapEvent; import com.google.mobile.trippy.web.client.event.ShowTripScheduleEvent; import com.google.mobile.trippy.web.client.presenter.MenuPresenter; import com.google.mobile.trippy.web.client.presenter.SearchBarPresenter; import com.google.mobile.trippy.web.client.presenter.TripEditPopupPresenter; import com.google.mobile.trippy.web.client.widget.Toast; import com.google.mobile.trippy.web.shared.exception.AuthorizationException; import com.google.mobile.trippy.web.shared.models.Trip; /** * Presenter for options header for screens showing trip data. * */ public class TripOptionsPresenter extends MenuOptionsPresenter { private final SearchBarPresenter searchPresenter; private final TripEditPopupPresenter tripEditPopupPresenter; private Trip trip; private int tripDay; public TripOptionsPresenter(final MenuOptionsPresenter.Display display, final SingletonComponents singletonComponents, final Provider<SearchBarPresenter> searchProvider, final Provider<TripEditPopupPresenter> tripEditProvider, final Provider<MenuPresenter> menuProvider) { super(display); super.singletonComponents = singletonComponents; this.searchPresenter = searchProvider.get(); this.tripEditPopupPresenter = tripEditProvider.get(); super.menuPresenter = menuProvider.get(); } public void setTrip(final Trip trip, final int day) { this.trip = trip; this.tripDay = day; searchPresenter.setTrip(trip, tripDay, null); tripEditPopupPresenter.setTrip(trip); setSearchAction(new Runnable() { @Override public void run() { doSearch(); } }); addMenu(); } /** * Handle user events on header. * * Events Fired: None * * Events listened: SearchClickEvent, it is fired by clicking on native * search button. */ @Override public void bind() { bind(true); } /** * Handle user events on header. * * Events Fired: None * * Events listened: SearchClickEvent, it is fired by clicking on native * search button if useHardwareKey */ public void bind(boolean useHardwareKey) { super.bind(); searchPresenter.bind(); tripEditPopupPresenter.bind(); if (useHardwareKey) { // For hardware search action. HANDLERS.add(singletonComponents.getEventBus().addHandler(SearchClickEvent.getType(), new SearchClickEventHandler() { @Override public void onSearch(SearchClickEvent event) { doSearch(); } })); } } @Override public void release() { super.release(); searchPresenter.release(); tripEditPopupPresenter.release(); } @Override public void addMenu() { Preconditions.checkNotNull(trip); menuPresenter.clear(); if (isMapScreen()) { menuPresenter.addMenuItem(Constants.SHOW_IN_LIST_STR, TrippyBundle.INSTANCE.listIcon(), new Runnable() { @Override public void run() { singletonComponents.getEventBus().fireEvent(new ShowTripScheduleEvent(trip)); } }); } else { menuPresenter.addMenuItem(Constants.SHOW_ON_MAP_STR, TrippyBundle.INSTANCE.iconShowOnMap(), new Runnable() { @Override public void run() { singletonComponents.getEventBus().fireEvent( new ShowTripOnMapEvent(trip, tripDay, null/*selected trip Item key*/)); } }); } final boolean isContributor = singletonComponents.getUserUtils().isContributor(trip, singletonComponents.getUtils().getUserEmail()); final boolean isOwner = singletonComponents.getUserUtils().isOwner(trip, singletonComponents.getUtils().getUserEmail()); menuPresenter.addMenuItem(Constants.DELETE_STR, TrippyBundle.INSTANCE.trash(), !isOwner, new Runnable() { @Override public void run() { if (isOwner) { if (Window.confirm(singletonComponents.getMessage().confirmTripDelete(trip.getName()))) { final Toast toast = singletonComponents.getToast(); try { toast.showLoading(singletonComponents.getMessage().deleting(trip.getName())); singletonComponents.getTripService().deleteTrip(trip, new AsyncCallback<Void>() { @Override public void onSuccess(Void result) { toast.hideLoading(); toast.showToast(singletonComponents.getMessage().tripDeleted()); singletonComponents.getEventBus().fireEvent(new ShowHomePageEvent()); } @Override public void onFailure(Throwable caught) { toast.hideLoading(); if (caught instanceof AuthorizationException) { toast.showToast(singletonComponents.getMessage() .unauthorizedDelete(Constants.TRIP_STR)); } else { toast.showToast(singletonComponents.getMessage().tripDeletionFailed()); } } }); } catch (AuthorizationException e) { toast.hideLoading(); toast.showToast(singletonComponents.getMessage().tripDeletionFailed()); } } } else { singletonComponents.getToast().showToast( singletonComponents.getMessage().unauthorizedDelete(Constants.SHARED_TRIP_STR)); } } }); // "Share" trip item menuPresenter.addMenuItem(Constants.INVITE, TrippyBundle.INSTANCE.shareIcon(), !isContributor, new Runnable() { @Override public void run() { if (isContributor) { singletonComponents.getEventBus().fireEvent(new ShareTripEvent(trip)); } else { singletonComponents.getToast() .showToast(singletonComponents.getMessage().unauthorizedShare()); } } }); // "Edit" trip item menuPresenter.addMenuItem(Constants.EDIT_STR, TrippyBundle.INSTANCE.editIcon(), !isContributor, new Runnable() { @Override public void run() { if (isContributor) { tripEditPopupPresenter.showPopup(); } else { singletonComponents.getToast().showToast( singletonComponents.getMessage().unauthorizedEdit(Constants.SHARED_TRIP_STR)); } } }); menuPresenter.setPopupTitle(Constants.TRIP_MENU_STR); super.addMenu(); } public void showEditPopUp(final boolean visible) { if (visible) { tripEditPopupPresenter.showPopup(); } } private void doSearch() { if (searchClickListener != null) { searchClickListener.onSearchClick(searchPresenter); } searchPresenter.clearDisplay(); searchPresenter.showPopup(); } }