1 /** 2 * Copyright (C) 2013 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); you may not 5 * use this file except in compliance with the License. You may obtain a copy 6 * of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT 12 * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the 13 * License for the specific language governing permissions and limitations 14 * under the License. 15 */ 16 17 package com.android.inputmethod.dictionarypack; 18 19 import com.android.inputmethod.latin.CollectionUtils; 20 21 import java.util.HashMap; 22 23 /** 24 * Helper class to maintain the interface state of word list preferences. 25 * 26 * This is necessary because the views are created on-demand by calling code. There are many 27 * situations where views are renewed with little relation with user interaction. For example, 28 * when scrolling, the view is reused so it doesn't keep its state, which means we need to keep 29 * it separately. Also whenever the underlying dictionary list undergoes a change (for example, 30 * update the metadata, or finish downloading) the whole list has to be thrown out and recreated 31 * in case some dictionaries appeared, disappeared, changed states etc. 32 */ 33 public class DictionaryListInterfaceState { 34 private static class State { 35 public boolean mOpen = false; 36 public int mStatus = MetadataDbHelper.STATUS_UNKNOWN; 37 } 38 39 private HashMap<String, State> mWordlistToState = CollectionUtils.newHashMap(); 40 41 public boolean isOpen(final String wordlistId) { 42 final State state = mWordlistToState.get(wordlistId); 43 if (null == state) return false; 44 return state.mOpen; 45 } 46 47 public int getStatus(final String wordlistId) { 48 final State state = mWordlistToState.get(wordlistId); 49 if (null == state) return MetadataDbHelper.STATUS_UNKNOWN; 50 return state.mStatus; 51 } 52 53 public void setOpen(final String wordlistId, final int status) { 54 final State newState; 55 final State state = mWordlistToState.get(wordlistId); 56 newState = null == state ? new State() : state; 57 newState.mOpen = true; 58 newState.mStatus = status; 59 mWordlistToState.put(wordlistId, newState); 60 } 61 62 public void closeAll() { 63 for (final State state : mWordlistToState.values()) { 64 state.mOpen = false; 65 } 66 } 67 } 68
