1 /* 2 * Copyright (C) 2009 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy 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, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17 package com.android.inputmethod.pinyin; 18 19 import java.util.Vector; 20 21 import android.content.Context; 22 23 /** 24 * Class used to cache previously loaded soft keyboard layouts. 25 */ 26 public class SkbPool { 27 private static SkbPool mInstance = null; 28 29 private Vector<SkbTemplate> mSkbTemplates = new Vector<SkbTemplate>(); 30 private Vector<SoftKeyboard> mSoftKeyboards = new Vector<SoftKeyboard>(); 31 SkbPool()32 private SkbPool() { 33 } 34 getInstance()35 public static SkbPool getInstance() { 36 if (null == mInstance) mInstance = new SkbPool(); 37 return mInstance; 38 } 39 resetCachedSkb()40 public void resetCachedSkb() { 41 mSoftKeyboards.clear(); 42 } 43 getSkbTemplate(int skbTemplateId, Context context)44 public SkbTemplate getSkbTemplate(int skbTemplateId, Context context) { 45 for (int i = 0; i < mSkbTemplates.size(); i++) { 46 SkbTemplate t = mSkbTemplates.elementAt(i); 47 if (t.getSkbTemplateId() == skbTemplateId) { 48 return t; 49 } 50 } 51 52 if (null != context) { 53 XmlKeyboardLoader xkbl = new XmlKeyboardLoader(context); 54 SkbTemplate t = xkbl.loadSkbTemplate(skbTemplateId); 55 if (null != t) { 56 mSkbTemplates.add(t); 57 return t; 58 } 59 } 60 return null; 61 } 62 63 // Try to find the keyboard in the pool with the cache id. If there is no 64 // keyboard found, try to load it with the given xml id. getSoftKeyboard(int skbCacheId, int skbXmlId, int skbWidth, int skbHeight, Context context)65 public SoftKeyboard getSoftKeyboard(int skbCacheId, int skbXmlId, 66 int skbWidth, int skbHeight, Context context) { 67 for (int i = 0; i < mSoftKeyboards.size(); i++) { 68 SoftKeyboard skb = mSoftKeyboards.elementAt(i); 69 if (skb.getCacheId() == skbCacheId && skb.getSkbXmlId() == skbXmlId) { 70 skb.setSkbCoreSize(skbWidth, skbHeight); 71 skb.setNewlyLoadedFlag(false); 72 return skb; 73 } 74 } 75 if (null != context) { 76 XmlKeyboardLoader xkbl = new XmlKeyboardLoader(context); 77 SoftKeyboard skb = xkbl.loadKeyboard(skbXmlId, skbWidth, skbHeight); 78 if (skb != null) { 79 if (skb.getCacheFlag()) { 80 skb.setCacheId(skbCacheId); 81 mSoftKeyboards.add(skb); 82 } 83 } 84 return skb; 85 } 86 return null; 87 } 88 } 89