Java tutorial
/* * Copyright (C) 2014 Google Inc. * Licensed to The Android Open Source Project. * * 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.android.mail.utils; import android.content.res.Resources; import android.support.v4.text.BidiFormatter; import android.widget.ImageView; import android.widget.TextView; import com.android.mail.R; import com.android.mail.providers.Folder; /** * Utility class for handling logic related to empty states throughout the app. */ public class EmptyStateUtils { /** * Given an empty folder, set the corresponding empty state icon for that folder. */ public static void bindEmptyFolderIcon(ImageView view, Folder folder) { if (folder == null) { view.setImageResource(R.drawable.ic_empty_default); } else if (folder.isInbox()) { view.setImageResource(R.drawable.ic_empty_inbox); } else if (folder.isSearch()) { view.setImageResource(R.drawable.ic_empty_search); } else if (folder.isSpam()) { view.setImageResource(R.drawable.ic_empty_spam); } else if (folder.isTrash()) { view.setImageResource(R.drawable.ic_empty_trash); } else { view.setImageResource(R.drawable.ic_empty_default); } } /** * Given an empty folder, set the corresponding text for indicating the empty state. */ public static void bindEmptyFolderText(TextView view, Folder folder, Resources res, String searchQuery, BidiFormatter bidiFormatter) { if (folder == null) { view.setText(R.string.empty_folder); } else if (folder.isInbox()) { view.setText(R.string.empty_inbox); } else if (folder.isSearch()) { final String text = res.getString(R.string.empty_search, bidiFormatter.unicodeWrap(searchQuery)); view.setText(text); } else if (folder.isSpam()) { view.setText(R.string.empty_spam_folder); } else if (folder.isTrash()) { view.setText(R.string.empty_trash_folder); } else { view.setText(R.string.empty_folder); } } }