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-rw-r--r--java/src/com/android/inputmethod/deprecated/recorrection/RecorrectionSuggestionEntries.java3
-rw-r--r--java/src/com/android/inputmethod/keyboard/Keyboard.java4
-rw-r--r--java/src/com/android/inputmethod/keyboard/KeyboardSwitcher.java5
-rw-r--r--java/src/com/android/inputmethod/keyboard/ProximityInfo.java5
-rw-r--r--java/src/com/android/inputmethod/latin/BinaryDictionary.java15
-rw-r--r--java/src/com/android/inputmethod/latin/Dictionary.java18
-rw-r--r--java/src/com/android/inputmethod/latin/DictionaryCollection.java7
-rw-r--r--java/src/com/android/inputmethod/latin/ExpandableDictionary.java4
-rw-r--r--java/src/com/android/inputmethod/latin/LatinIME.java6
-rw-r--r--java/src/com/android/inputmethod/latin/Suggest.java16
-rw-r--r--java/src/com/android/inputmethod/latin/UserDictionary.java7
-rw-r--r--java/src/com/android/inputmethod/latin/WhitelistDictionary.java5
-rw-r--r--java/src/com/android/inputmethod/latin/spellcheck/AndroidSpellCheckerService.java127
-rw-r--r--java/src/com/android/inputmethod/latin/spellcheck/SpellChecker.java115
14 files changed, 174 insertions, 163 deletions
diff --git a/java/src/com/android/inputmethod/deprecated/recorrection/RecorrectionSuggestionEntries.java b/java/src/com/android/inputmethod/deprecated/recorrection/RecorrectionSuggestionEntries.java
index 5e6c87044..f33a46277 100644
--- a/java/src/com/android/inputmethod/deprecated/recorrection/RecorrectionSuggestionEntries.java
+++ b/java/src/com/android/inputmethod/deprecated/recorrection/RecorrectionSuggestionEntries.java
@@ -57,6 +57,7 @@ public class RecorrectionSuggestionEntries {
private static SuggestedWords.Builder getTypedSuggestions(
Suggest suggest, KeyboardSwitcher keyboardSwitcher, WordComposer word) {
- return suggest.getSuggestedWordBuilder(keyboardSwitcher.getKeyboardView(), word, null);
+ return suggest.getSuggestedWordBuilder(keyboardSwitcher.getKeyboardView(), word, null,
+ keyboardSwitcher.getLatinKeyboard().getProximityInfo());
}
}
diff --git a/java/src/com/android/inputmethod/keyboard/Keyboard.java b/java/src/com/android/inputmethod/keyboard/Keyboard.java
index d5e75d01b..518bc8e9e 100644
--- a/java/src/com/android/inputmethod/keyboard/Keyboard.java
+++ b/java/src/com/android/inputmethod/keyboard/Keyboard.java
@@ -149,8 +149,8 @@ public class Keyboard {
mMostCommonKeyWidth, mKeys);
}
- public int getProximityInfo() {
- return mProximityInfo.getNativeProximityInfo();
+ public ProximityInfo getProximityInfo() {
+ return mProximityInfo;
}
public boolean hasShiftLockKey() {
diff --git a/java/src/com/android/inputmethod/keyboard/KeyboardSwitcher.java b/java/src/com/android/inputmethod/keyboard/KeyboardSwitcher.java
index 0779964af..811470c26 100644
--- a/java/src/com/android/inputmethod/keyboard/KeyboardSwitcher.java
+++ b/java/src/com/android/inputmethod/keyboard/KeyboardSwitcher.java
@@ -187,13 +187,16 @@ public class KeyboardSwitcher implements SharedPreferences.OnSharedPreferenceCha
}
public void save() {
+ if (mCurrentId == null) {
+ return;
+ }
mIsAlphabetMode = isAlphabetMode();
if (mIsAlphabetMode) {
mIsShiftLocked = isShiftLocked();
mIsShifted = !mIsShiftLocked && isShiftedOrShiftLocked();
} else {
mIsShiftLocked = false;
- mIsShifted = mSymbolsShiftedKeyboardId.equals(mCurrentId);
+ mIsShifted = mCurrentId.equals(mSymbolsShiftedKeyboardId);
}
mIsValid = true;
}
diff --git a/java/src/com/android/inputmethod/keyboard/ProximityInfo.java b/java/src/com/android/inputmethod/keyboard/ProximityInfo.java
index aadedc69d..07dae168f 100644
--- a/java/src/com/android/inputmethod/keyboard/ProximityInfo.java
+++ b/java/src/com/android/inputmethod/keyboard/ProximityInfo.java
@@ -19,6 +19,7 @@ package com.android.inputmethod.keyboard;
import com.android.inputmethod.latin.Utils;
import java.util.Arrays;
+import java.util.Collections;
import java.util.List;
public class ProximityInfo {
@@ -54,6 +55,10 @@ public class ProximityInfo {
computeNearestNeighbors(keyWidth, keys);
}
+ public static ProximityInfo getDummyProximityInfo() {
+ return new ProximityInfo(1, 1, 1, 1, 1, Collections.<Key>emptyList());
+ }
+
private int mNativeProximityInfo;
static {
Utils.loadNativeLibrary();
diff --git a/java/src/com/android/inputmethod/latin/BinaryDictionary.java b/java/src/com/android/inputmethod/latin/BinaryDictionary.java
index 9748d6006..6a6a0a4ee 100644
--- a/java/src/com/android/inputmethod/latin/BinaryDictionary.java
+++ b/java/src/com/android/inputmethod/latin/BinaryDictionary.java
@@ -156,10 +156,11 @@ public class BinaryDictionary extends Dictionary {
}
}
+ // proximityInfo may not be null.
@Override
- public void getWords(final WordComposer codes, final WordCallback callback) {
- final int count = getSuggestions(codes, mKeyboardSwitcher.getLatinKeyboard(),
- mOutputChars, mScores);
+ public void getWords(final WordComposer codes, final WordCallback callback,
+ final ProximityInfo proximityInfo) {
+ final int count = getSuggestions(codes, proximityInfo, mOutputChars, mScores);
for (int j = 0; j < count; ++j) {
if (mScores[j] < 1) break;
@@ -179,8 +180,9 @@ public class BinaryDictionary extends Dictionary {
return mNativeDict != 0;
}
- /* package for test */ int getSuggestions(final WordComposer codes, final Keyboard keyboard,
- char[] outputChars, int[] scores) {
+ // proximityInfo may not be null.
+ /* package for test */ int getSuggestions(final WordComposer codes,
+ final ProximityInfo proximityInfo, char[] outputChars, int[] scores) {
if (!isValidDictionary()) return -1;
final int codesSize = codes.size();
@@ -196,9 +198,8 @@ public class BinaryDictionary extends Dictionary {
Arrays.fill(outputChars, (char) 0);
Arrays.fill(scores, 0);
- final int proximityInfo = keyboard == null ? 0 : keyboard.getProximityInfo();
return getSuggestionsNative(
- mNativeDict, proximityInfo,
+ mNativeDict, proximityInfo.getNativeProximityInfo(),
codes.getXCoordinates(), codes.getYCoordinates(), mInputCodes, codesSize,
mFlags, outputChars, scores);
}
diff --git a/java/src/com/android/inputmethod/latin/Dictionary.java b/java/src/com/android/inputmethod/latin/Dictionary.java
index c7737b9a2..c35b42877 100644
--- a/java/src/com/android/inputmethod/latin/Dictionary.java
+++ b/java/src/com/android/inputmethod/latin/Dictionary.java
@@ -1,12 +1,12 @@
/*
* Copyright (C) 2008 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
@@ -16,6 +16,8 @@
package com.android.inputmethod.latin;
+import com.android.inputmethod.keyboard.ProximityInfo;
+
/**
* Abstract base class for a dictionary that can do a fuzzy search for words based on a set of key
* strokes.
@@ -25,7 +27,7 @@ public abstract class Dictionary {
* Whether or not to replicate the typed word in the suggested list, even if it's valid.
*/
protected static final boolean INCLUDE_TYPED_WORD_IF_VALID = false;
-
+
/**
* The weight to give to a word if it's length is the same as the number of typed characters.
*/
@@ -57,13 +59,15 @@ public abstract class Dictionary {
}
/**
- * Searches for words in the dictionary that match the characters in the composer. Matched
+ * Searches for words in the dictionary that match the characters in the composer. Matched
* words are added through the callback object.
* @param composer the key sequence to match
* @param callback the callback object to send matched words to as possible candidates
+ * @param proximityInfo the object for key proximity. May be ignored by some implementations.
* @see WordCallback#addWord(char[], int, int, int, int, DataType)
*/
- abstract public void getWords(final WordComposer composer, final WordCallback callback);
+ abstract public void getWords(final WordComposer composer, final WordCallback callback,
+ final ProximityInfo proximityInfo);
/**
* Searches for pairs in the bigram dictionary that matches the previous word and all the
@@ -83,7 +87,7 @@ public abstract class Dictionary {
* @return true if the word exists, false otherwise
*/
abstract public boolean isValidWord(CharSequence word);
-
+
/**
* Compares the contents of the character array with the typed word and returns true if they
* are the same.
diff --git a/java/src/com/android/inputmethod/latin/DictionaryCollection.java b/java/src/com/android/inputmethod/latin/DictionaryCollection.java
index 107840331..739153044 100644
--- a/java/src/com/android/inputmethod/latin/DictionaryCollection.java
+++ b/java/src/com/android/inputmethod/latin/DictionaryCollection.java
@@ -16,6 +16,8 @@
package com.android.inputmethod.latin;
+import com.android.inputmethod.keyboard.ProximityInfo;
+
import java.util.Collection;
import java.util.Collections;
import java.util.List;
@@ -47,9 +49,10 @@ public class DictionaryCollection extends Dictionary {
}
@Override
- public void getWords(final WordComposer composer, final WordCallback callback) {
+ public void getWords(final WordComposer composer, final WordCallback callback,
+ final ProximityInfo proximityInfo) {
for (final Dictionary dict : mDictionaries)
- dict.getWords(composer, callback);
+ dict.getWords(composer, callback, proximityInfo);
}
@Override
diff --git a/java/src/com/android/inputmethod/latin/ExpandableDictionary.java b/java/src/com/android/inputmethod/latin/ExpandableDictionary.java
index 97a4a1816..35d1541ff 100644
--- a/java/src/com/android/inputmethod/latin/ExpandableDictionary.java
+++ b/java/src/com/android/inputmethod/latin/ExpandableDictionary.java
@@ -20,6 +20,7 @@ import android.content.Context;
import android.os.AsyncTask;
import com.android.inputmethod.keyboard.Keyboard;
+import com.android.inputmethod.keyboard.ProximityInfo;
import java.util.LinkedList;
@@ -193,7 +194,8 @@ public class ExpandableDictionary extends Dictionary {
}
@Override
- public void getWords(final WordComposer codes, final WordCallback callback) {
+ public void getWords(final WordComposer codes, final WordCallback callback,
+ final ProximityInfo proximityInfo) {
synchronized (mUpdatingLock) {
// If we need to update, start off a background task
if (mRequiresReload) startDictionaryLoadingTaskLocked();
diff --git a/java/src/com/android/inputmethod/latin/LatinIME.java b/java/src/com/android/inputmethod/latin/LatinIME.java
index 836c55a6e..6c91c454c 100644
--- a/java/src/com/android/inputmethod/latin/LatinIME.java
+++ b/java/src/com/android/inputmethod/latin/LatinIME.java
@@ -1600,7 +1600,8 @@ public class LatinIME extends InputMethodServiceCompatWrapper implements Keyboar
}
// getSuggestedWordBuilder handles gracefully a null value of prevWord
final SuggestedWords.Builder builder = mSuggest.getSuggestedWordBuilder(
- mKeyboardSwitcher.getKeyboardView(), wordComposer, prevWord);
+ mKeyboardSwitcher.getKeyboardView(), wordComposer, prevWord,
+ mKeyboardSwitcher.getLatinKeyboard().getProximityInfo());
boolean autoCorrectionAvailable = !mInputTypeNoAutoCorrect && mSuggest.hasAutoCorrection();
final CharSequence typedWord = wordComposer.getTypedWord();
@@ -1825,7 +1826,8 @@ public class LatinIME extends InputMethodServiceCompatWrapper implements Keyboar
final CharSequence prevWord = EditingUtils.getThisWord(getCurrentInputConnection(),
mSettingsValues.mWordSeparators);
SuggestedWords.Builder builder = mSuggest.getSuggestedWordBuilder(
- mKeyboardSwitcher.getKeyboardView(), sEmptyWordComposer, prevWord);
+ mKeyboardSwitcher.getKeyboardView(), sEmptyWordComposer, prevWord,
+ mKeyboardSwitcher.getLatinKeyboard().getProximityInfo());
if (builder.size() > 0) {
// Explicitly supply an empty typed word (the no-second-arg version of
diff --git a/java/src/com/android/inputmethod/latin/Suggest.java b/java/src/com/android/inputmethod/latin/Suggest.java
index c2452b947..933a94176 100644
--- a/java/src/com/android/inputmethod/latin/Suggest.java
+++ b/java/src/com/android/inputmethod/latin/Suggest.java
@@ -22,6 +22,8 @@ import android.text.TextUtils;
import android.util.Log;
import android.view.View;
+import com.android.inputmethod.keyboard.ProximityInfo;
+
import java.io.File;
import java.util.ArrayList;
import java.util.Arrays;
@@ -263,9 +265,10 @@ public class Suggest implements Dictionary.WordCallback {
* @param prevWordForBigram previous word (used only for bigram)
* @return suggested words object.
*/
- public SuggestedWords getSuggestions(View view, WordComposer wordComposer,
- CharSequence prevWordForBigram) {
- return getSuggestedWordBuilder(view, wordComposer, prevWordForBigram).build();
+ public SuggestedWords getSuggestions(final View view, final WordComposer wordComposer,
+ final CharSequence prevWordForBigram, final ProximityInfo proximityInfo) {
+ return getSuggestedWordBuilder(view, wordComposer, prevWordForBigram,
+ proximityInfo).build();
}
private CharSequence capitalizeWord(boolean all, boolean first, CharSequence word) {
@@ -299,8 +302,9 @@ public class Suggest implements Dictionary.WordCallback {
}
// TODO: cleanup dictionaries looking up and suggestions building with SuggestedWords.Builder
- public SuggestedWords.Builder getSuggestedWordBuilder(View view, WordComposer wordComposer,
- CharSequence prevWordForBigram) {
+ public SuggestedWords.Builder getSuggestedWordBuilder(final View view,
+ final WordComposer wordComposer, CharSequence prevWordForBigram,
+ final ProximityInfo proximityInfo) {
LatinImeLogger.onStartSuggestion(prevWordForBigram);
mAutoCorrection.init();
mIsFirstCharCapitalized = wordComposer.isFirstCharCapitalized();
@@ -365,7 +369,7 @@ public class Suggest implements Dictionary.WordCallback {
if (key.equals(DICT_KEY_USER_UNIGRAM) || key.equals(DICT_KEY_WHITELIST))
continue;
final Dictionary dictionary = mUnigramDictionaries.get(key);
- dictionary.getWords(wordComposer, this);
+ dictionary.getWords(wordComposer, this, proximityInfo);
}
}
CharSequence autoText = null;
diff --git a/java/src/com/android/inputmethod/latin/UserDictionary.java b/java/src/com/android/inputmethod/latin/UserDictionary.java
index f93d24fe6..6608d8268 100644
--- a/java/src/com/android/inputmethod/latin/UserDictionary.java
+++ b/java/src/com/android/inputmethod/latin/UserDictionary.java
@@ -26,6 +26,8 @@ import android.net.Uri;
import android.os.RemoteException;
import android.provider.UserDictionary.Words;
+import com.android.inputmethod.keyboard.ProximityInfo;
+
public class UserDictionary extends ExpandableDictionary {
private static final String[] PROJECTION_QUERY = {
@@ -150,8 +152,9 @@ public class UserDictionary extends ExpandableDictionary {
}
@Override
- public synchronized void getWords(final WordComposer codes, final WordCallback callback) {
- super.getWords(codes, callback);
+ public synchronized void getWords(final WordComposer codes, final WordCallback callback,
+ final ProximityInfo proximityInfo) {
+ super.getWords(codes, callback, proximityInfo);
}
@Override
diff --git a/java/src/com/android/inputmethod/latin/WhitelistDictionary.java b/java/src/com/android/inputmethod/latin/WhitelistDictionary.java
index 4377373d2..639c96681 100644
--- a/java/src/com/android/inputmethod/latin/WhitelistDictionary.java
+++ b/java/src/com/android/inputmethod/latin/WhitelistDictionary.java
@@ -21,6 +21,8 @@ import android.text.TextUtils;
import android.util.Log;
import android.util.Pair;
+import com.android.inputmethod.keyboard.ProximityInfo;
+
import java.util.HashMap;
public class WhitelistDictionary extends Dictionary {
@@ -89,7 +91,8 @@ public class WhitelistDictionary extends Dictionary {
// Not used for WhitelistDictionary. We use getWhitelistedWord() in Suggest.java instead
@Override
- public void getWords(WordComposer composer, WordCallback callback) {
+ public void getWords(final WordComposer composer, final WordCallback callback,
+ final ProximityInfo proximityInfo) {
}
@Override
diff --git a/java/src/com/android/inputmethod/latin/spellcheck/AndroidSpellCheckerService.java b/java/src/com/android/inputmethod/latin/spellcheck/AndroidSpellCheckerService.java
index 4a822d7b0..848dcbed5 100644
--- a/java/src/com/android/inputmethod/latin/spellcheck/AndroidSpellCheckerService.java
+++ b/java/src/com/android/inputmethod/latin/spellcheck/AndroidSpellCheckerService.java
@@ -16,35 +16,130 @@
package com.android.inputmethod.latin.spellcheck;
+import android.content.res.Resources;
import android.service.textservice.SpellCheckerService;
import android.util.Log;
import android.view.textservice.SuggestionsInfo;
import android.view.textservice.TextInfo;
+import com.android.inputmethod.compat.ArraysCompatUtils;
+import com.android.inputmethod.keyboard.Key;
+import com.android.inputmethod.keyboard.ProximityInfo;
+import com.android.inputmethod.latin.Dictionary;
+import com.android.inputmethod.latin.Dictionary.DataType;
+import com.android.inputmethod.latin.Dictionary.WordCallback;
+import com.android.inputmethod.latin.DictionaryFactory;
+import com.android.inputmethod.latin.Utils;
+import com.android.inputmethod.latin.WordComposer;
+
+import java.util.Collections;
+import java.util.List;
+import java.util.LinkedList;
+import java.util.Locale;
+import java.util.Map;
+import java.util.TreeMap;
+
/**
* Service for spell checking, using LatinIME's dictionaries and mechanisms.
*/
public class AndroidSpellCheckerService extends SpellCheckerService {
private static final String TAG = AndroidSpellCheckerService.class.getSimpleName();
private static final boolean DBG = true;
+
+ private final static String[] emptyArray = new String[0];
+ private final ProximityInfo mProximityInfo = ProximityInfo.getDummyProximityInfo();
+ private final Map<String, Dictionary> mDictionaries =
+ Collections.synchronizedMap(new TreeMap<String, Dictionary>());
+
+ private static class SuggestionsGatherer implements WordCallback {
+ private final int DEFAULT_SUGGESTION_LENGTH = 16;
+ private final String[] mSuggestions;
+ private final int[] mScores;
+ private final int mMaxLength;
+ private int mLength = 0;
+
+ SuggestionsGatherer(final int maxLength) {
+ mMaxLength = maxLength;
+ mSuggestions = new String[mMaxLength];
+ mScores = new int[mMaxLength];
+ }
+
+ @Override
+ synchronized public boolean addWord(char[] word, int wordOffset, int wordLength, int score,
+ int dicTypeId, DataType dataType) {
+ final int positionIndex = ArraysCompatUtils.binarySearch(mScores, 0, mLength, score);
+ // binarySearch returns the index if the element exists, and -<insertion index> - 1
+ // if it doesn't. See documentation for binarySearch.
+ final int insertIndex = positionIndex >= 0 ? positionIndex : -positionIndex - 1;
+
+ if (mLength < mMaxLength) {
+ final int copyLen = mLength - insertIndex;
+ ++mLength;
+ System.arraycopy(mScores, insertIndex, mScores, insertIndex + 1, copyLen);
+ System.arraycopy(mSuggestions, insertIndex, mSuggestions, insertIndex + 1, copyLen);
+ } else {
+ if (insertIndex == 0) return true;
+ System.arraycopy(mScores, 1, mScores, 0, insertIndex);
+ System.arraycopy(mSuggestions, 1, mSuggestions, 0, insertIndex);
+ }
+ mScores[insertIndex] = score;
+ mSuggestions[insertIndex] = new String(word, wordOffset, wordLength);
+
+ return true;
+ }
+
+ public String[] getGatheredSuggestions() {
+ if (0 == mLength) return null;
+
+ final String[] results = new String[mLength];
+ for (int i = mLength - 1; i >= 0; --i) {
+ results[mLength - i - 1] = mSuggestions[i];
+ }
+ return results;
+ }
+ }
+
+ private Dictionary getDictionary(final String locale) {
+ Dictionary dictionary = mDictionaries.get(locale);
+ if (null == dictionary) {
+ final Resources resources = getResources();
+ final int fallbackResourceId = Utils.getMainDictionaryResourceId(resources);
+ final Locale localeObject = Utils.constructLocaleFromString(locale);
+ dictionary = DictionaryFactory.createDictionaryFromManager(this, localeObject,
+ fallbackResourceId);
+ mDictionaries.put(locale, dictionary);
+ }
+ return dictionary;
+ }
+
+ // Note : this must be reentrant
+ /**
+ * Gets a list of suggestions for a specific string.
+ *
+ * This returns a list of possible corrections for the text passed as an
+ * arguments. It may split or group words, and even perform grammatical
+ * analysis.
+ */
@Override
- public SuggestionsInfo getSuggestions(TextInfo textInfo, int suggestionsLimit,
- String locale) {
- // TODO: implement this
+ public SuggestionsInfo getSuggestions(final TextInfo textInfo, final int suggestionsLimit,
+ final String locale) {
+ final Dictionary dictionary = getDictionary(locale);
final String text = textInfo.getText();
- if (DBG) {
- Log.w(TAG, "getSuggestions: " + text);
- }
- String[] candidates0 = new String[] {text, "candidate1", "candidate2", "candidate3"};
- String[] candidates1 = new String[] {text, "candidateA", "candidateB"};
- final int textLength = textInfo.getText().length() % 3;
- if (textLength % 3 == 0) {
- return new SuggestionsInfo(2
- | SuggestionsInfo.RESULT_ATTR_IN_THE_DICTIONARY, candidates0);
- } else if (textLength % 3 == 1) {
- return new SuggestionsInfo(SuggestionsInfo.RESULT_ATTR_IN_THE_DICTIONARY, candidates1);
- } else {
- return new SuggestionsInfo(0, null);
+
+ final SuggestionsGatherer suggestionsGatherer = new SuggestionsGatherer(suggestionsLimit);
+ final WordComposer composer = new WordComposer();
+ final int length = text.length();
+ for (int i = 0; i < length; ++i) {
+ int character = text.codePointAt(i);
+ composer.add(character, new int[] { character },
+ WordComposer.NOT_A_COORDINATE, WordComposer.NOT_A_COORDINATE);
}
+ dictionary.getWords(composer, suggestionsGatherer, mProximityInfo);
+ final boolean isInDict = dictionary.isValidWord(text);
+ final String[] suggestions = suggestionsGatherer.getGatheredSuggestions();
+
+ final int flags = (isInDict ? SuggestionsInfo.RESULT_ATTR_IN_THE_DICTIONARY : 0)
+ | (null != suggestions ? SuggestionsInfo.RESULT_ATTR_LOOKS_LIKE_TYPO : 0);
+ return new SuggestionsInfo(flags, suggestions);
}
}
diff --git a/java/src/com/android/inputmethod/latin/spellcheck/SpellChecker.java b/java/src/com/android/inputmethod/latin/spellcheck/SpellChecker.java
deleted file mode 100644
index 63c6d69d7..000000000
--- a/java/src/com/android/inputmethod/latin/spellcheck/SpellChecker.java
+++ /dev/null
@@ -1,115 +0,0 @@
-/*
- * Copyright (C) 2011 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.inputmethod.latin.spellcheck;
-
-import android.content.Context;
-import android.content.res.Resources;
-
-import com.android.inputmethod.compat.ArraysCompatUtils;
-import com.android.inputmethod.latin.Dictionary;
-import com.android.inputmethod.latin.Dictionary.DataType;
-import com.android.inputmethod.latin.Dictionary.WordCallback;
-import com.android.inputmethod.latin.DictionaryFactory;
-import com.android.inputmethod.latin.Utils;
-import com.android.inputmethod.latin.WordComposer;
-
-import java.util.LinkedList;
-import java.util.List;
-import java.util.Locale;
-
-/**
- * Implements spell checking methods.
- */
-public class SpellChecker {
-
- public final Dictionary mDictionary;
-
- public SpellChecker(final Context context, final Locale locale) {
- final Resources resources = context.getResources();
- final int fallbackResourceId = Utils.getMainDictionaryResourceId(resources);
- mDictionary = DictionaryFactory.createDictionaryFromManager(context, locale,
- fallbackResourceId);
- }
-
- // Note : this must be reentrant
- /**
- * Finds out whether a word is in the dictionary or not.
- *
- * @param text the sequence containing the word to check for.
- * @param start the index of the first character of the word in text.
- * @param end the index of the next-to-last character in text.
- * @return true if the word is in the dictionary, false otherwise.
- */
- public boolean isCorrect(final CharSequence text, final int start, final int end) {
- return mDictionary.isValidWord(text.subSequence(start, end));
- }
-
- private static class SuggestionsGatherer implements WordCallback {
- private final int DEFAULT_SUGGESTION_LENGTH = 16;
- private final List<String> mSuggestions = new LinkedList<String>();
- private int[] mScores = new int[DEFAULT_SUGGESTION_LENGTH];
- private int mLength = 0;
-
- @Override
- synchronized public boolean addWord(char[] word, int wordOffset, int wordLength, int score,
- int dicTypeId, DataType dataType) {
- if (mLength >= mScores.length) {
- final int newLength = mScores.length * 2;
- mScores = new int[newLength];
- }
- final int positionIndex = ArraysCompatUtils.binarySearch(mScores, 0, mLength, score);
- // binarySearch returns the index if the element exists, and -<insertion index> - 1
- // if it doesn't. See documentation for binarySearch.
- final int insertionIndex = positionIndex >= 0 ? positionIndex : -positionIndex - 1;
- System.arraycopy(mScores, insertionIndex, mScores, insertionIndex + 1,
- mLength - insertionIndex);
- mLength += 1;
- mScores[insertionIndex] = score;
- mSuggestions.add(insertionIndex, new String(word, wordOffset, wordLength));
- return true;
- }
-
- public List<String> getGatheredSuggestions() {
- return mSuggestions;
- }
- }
-
- // Note : this must be reentrant
- /**
- * Gets a list of suggestions for a specific string.
- *
- * This returns a list of possible corrections for the text passed as an
- * arguments. It may split or group words, and even perform grammatical
- * analysis.
- *
- * @param text the sequence containing the word to check for.
- * @param start the index of the first character of the word in text.
- * @param end the index of the next-to-last character in text.
- * @return a list of possible suggestions to replace the text.
- */
- public List<String> getSuggestions(final CharSequence text, final int start, final int end) {
- final SuggestionsGatherer suggestionsGatherer = new SuggestionsGatherer();
- final WordComposer composer = new WordComposer();
- for (int i = start; i < end; ++i) {
- int character = text.charAt(i);
- composer.add(character, new int[] { character },
- WordComposer.NOT_A_COORDINATE, WordComposer.NOT_A_COORDINATE);
- }
- mDictionary.getWords(composer, suggestionsGatherer);
- return suggestionsGatherer.getGatheredSuggestions();
- }
-}