1 /* 2 * Copyright (C) 2012, 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.latin; 18 19 import com.android.inputmethod.latin.settings.NativeSuggestOptions; 20 import com.android.inputmethod.latin.utils.JniUtils; 21 22 import java.util.Locale; 23 24 public final class DicTraverseSession { 25 static { 26 JniUtils.loadNativeLibrary(); 27 } 28 // Must be equal to MAX_RESULTS in native/jni/src/defines.h 29 private static final int MAX_RESULTS = 18; 30 public final int[] mInputCodePoints = new int[Constants.DICTIONARY_MAX_WORD_LENGTH]; 31 public final int[][] mPrevWordCodePointArrays = 32 new int[Constants.MAX_PREV_WORD_COUNT_FOR_N_GRAM][]; 33 public final boolean[] mIsBeginningOfSentenceArray = 34 new boolean[Constants.MAX_PREV_WORD_COUNT_FOR_N_GRAM]; 35 public final int[] mOutputSuggestionCount = new int[1]; 36 public final int[] mOutputCodePoints = 37 new int[Constants.DICTIONARY_MAX_WORD_LENGTH * MAX_RESULTS]; 38 public final int[] mSpaceIndices = new int[MAX_RESULTS]; 39 public final int[] mOutputScores = new int[MAX_RESULTS]; 40 public final int[] mOutputTypes = new int[MAX_RESULTS]; 41 // Only one result is ever used 42 public final int[] mOutputAutoCommitFirstWordConfidence = new int[1]; 43 public final float[] mInputOutputLanguageWeight = new float[1]; 44 45 public final NativeSuggestOptions mNativeSuggestOptions = new NativeSuggestOptions(); 46 47 private static native long setDicTraverseSessionNative(String locale, long dictSize); 48 private static native void initDicTraverseSessionNative(long nativeDicTraverseSession, 49 long dictionary, int[] previousWord, int previousWordLength); 50 private static native void releaseDicTraverseSessionNative(long nativeDicTraverseSession); 51 52 private long mNativeDicTraverseSession; 53 54 public DicTraverseSession(Locale locale, long dictionary, long dictSize) { 55 mNativeDicTraverseSession = createNativeDicTraverseSession( 56 locale != null ? locale.toString() : "", dictSize); 57 initSession(dictionary); 58 } 59 60 public long getSession() { 61 return mNativeDicTraverseSession; 62 } 63 64 public void initSession(long dictionary) { 65 initSession(dictionary, null, 0); 66 } 67 68 public void initSession(long dictionary, int[] previousWord, int previousWordLength) { 69 initDicTraverseSessionNative( 70 mNativeDicTraverseSession, dictionary, previousWord, previousWordLength); 71 } 72 73 private final long createNativeDicTraverseSession(String locale, long dictSize) { 74 return setDicTraverseSessionNative(locale, dictSize); 75 } 76 77 private void closeInternal() { 78 if (mNativeDicTraverseSession != 0) { 79 releaseDicTraverseSessionNative(mNativeDicTraverseSession); 80 mNativeDicTraverseSession = 0; 81 } 82 } 83 84 public void close() { 85 closeInternal(); 86 } 87 88 @Override 89 protected void finalize() throws Throwable { 90 try { 91 closeInternal(); 92 } finally { 93 super.finalize(); 94 } 95 } 96 } 97
