am 1e6d3910: am ce4b2d2d: Merge "Add a safety net for auto-correction." into honeycomb
* commit '1e6d39104814083011d556376974f241e51a8bed': Add a safety net for auto-correction.main
commit
029511cc04
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@ -45,23 +45,22 @@ import android.widget.TextView;
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import java.util.ArrayList;
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public class CandidateView extends LinearLayout implements OnClickListener, OnLongClickListener {
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private LatinIME mService;
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private final ArrayList<View> mWords = new ArrayList<View>();
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private final TextView mPreviewText;
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private final PopupWindow mPreviewPopup;
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private static final CharacterStyle BOLD_SPAN = new StyleSpan(Typeface.BOLD);
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private static final CharacterStyle UNDERLINE_SPAN = new UnderlineSpan();
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private static final int MAX_SUGGESTIONS = 16;
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private final ArrayList<View> mWords = new ArrayList<View>();
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private final boolean mConfigCandidateHighlightFontColorEnabled;
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private final CharacterStyle mInvertedForegroundColorSpan;
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private final CharacterStyle mInvertedBackgroundColorSpan;
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private final int mColorNormal;
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private final int mColorRecommended;
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private final int mColorOther;
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private static final CharacterStyle BOLD_SPAN = new StyleSpan(Typeface.BOLD);
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private static final CharacterStyle UNDERLINE_SPAN = new UnderlineSpan();
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private final CharacterStyle mInvertedForegroundColorSpan;
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private final CharacterStyle mInvertedBackgroundColorSpan;
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private final PopupWindow mPreviewPopup;
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private final TextView mPreviewText;
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private LatinIME mService;
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private SuggestedWords mSuggestions = SuggestedWords.EMPTY;
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private boolean mShowingAutoCorrectionInverted;
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private boolean mShowingAddToDictionary;
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@ -186,9 +185,10 @@ public class CandidateView extends LinearLayout implements OnClickListener, OnLo
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final TextView tv = (TextView)v.findViewById(R.id.candidate_word);
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final TextView dv = (TextView)v.findViewById(R.id.candidate_debug_info);
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tv.setTextColor(mColorNormal);
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// TODO: Needs safety net?
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if (suggestions.mHasMinimalSuggestion
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&& ((i == 1 && !suggestions.mTypedWordValid) ||
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(i == 0 && suggestions.mTypedWordValid))) {
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&& ((i == 1 && !suggestions.mTypedWordValid)
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|| (i == 0 && suggestions.mTypedWordValid))) {
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final CharacterStyle style;
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if (mConfigCandidateHighlightFontColorEnabled) {
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style = BOLD_SPAN;
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@ -1537,7 +1537,9 @@ public class LatinIME extends InputMethodService implements KeyboardActionListen
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private void showSuggestions(SuggestedWords suggestedWords, CharSequence typedWord) {
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setSuggestions(suggestedWords);
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if (suggestedWords.size() > 0) {
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if (suggestedWords.hasAutoCorrectionWord()) {
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if (Utils.shouldBlockedBySafetyNetForAutoCorrection(suggestedWords)) {
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mBestWord = typedWord;
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} else if (suggestedWords.hasAutoCorrectionWord()) {
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mBestWord = suggestedWords.getWord(1);
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} else {
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mBestWord = typedWord;
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@ -31,7 +31,7 @@ import java.util.Arrays;
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*/
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public class Suggest implements Dictionary.WordCallback {
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public static final String TAG = "Suggest";
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public static final String TAG = Suggest.class.getSimpleName();
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public static final int APPROX_MAX_WORD_LENGTH = 32;
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@ -64,6 +64,8 @@ public class Suggest implements Dictionary.WordCallback {
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static final int LARGE_DICTIONARY_THRESHOLD = 200 * 1000;
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private static boolean DBG = LatinImeLogger.sDBG;
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private BinaryDictionary mMainDict;
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private Dictionary mUserDictionary;
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@ -93,7 +95,7 @@ public class Suggest implements Dictionary.WordCallback {
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private ArrayList<CharSequence> mSuggestions = new ArrayList<CharSequence>();
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ArrayList<CharSequence> mBigramSuggestions = new ArrayList<CharSequence>();
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private ArrayList<CharSequence> mStringPool = new ArrayList<CharSequence>();
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private boolean mHaveCorrection;
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private boolean mHaveAutoCorrection;
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private String mLowerOriginalWord;
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// TODO: Remove these member variables by passing more context to addWord() callback method
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@ -198,7 +200,7 @@ public class Suggest implements Dictionary.WordCallback {
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public SuggestedWords.Builder getSuggestedWordBuilder(View view, WordComposer wordComposer,
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CharSequence prevWordForBigram) {
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LatinImeLogger.onStartSuggestion(prevWordForBigram);
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mHaveCorrection = false;
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mHaveAutoCorrection = false;
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mIsFirstCharCapitalized = wordComposer.isFirstCharCapitalized();
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mIsAllUpperCase = wordComposer.isAllUpperCase();
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collectGarbage(mSuggestions, mPrefMaxSuggestions);
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@ -273,7 +275,10 @@ public class Suggest implements Dictionary.WordCallback {
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if (mSuggestions.size() > 0 && isValidWord(typedWord)
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&& (mCorrectionMode == CORRECTION_FULL
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|| mCorrectionMode == CORRECTION_FULL_BIGRAM)) {
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mHaveCorrection = true;
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if (DBG) {
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Log.d(TAG, "Auto corrected by CORRECTION_FULL.");
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}
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mHaveAutoCorrection = true;
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}
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}
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if (mMainDict != null) mMainDict.getWords(wordComposer, this, mNextLettersFrequencies);
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@ -289,7 +294,10 @@ public class Suggest implements Dictionary.WordCallback {
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+ "(" + mAutoCorrectionThreshold + ")");
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}
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if (normalizedScore >= mAutoCorrectionThreshold) {
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mHaveCorrection = true;
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if (DBG) {
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Log.d(TAG, "Auto corrected by S-threthhold.");
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}
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mHaveAutoCorrection = true;
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}
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}
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}
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@ -331,7 +339,10 @@ public class Suggest implements Dictionary.WordCallback {
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canAdd &= !TextUtils.equals(autoText, mSuggestions.get(i + 1));
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}
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if (canAdd) {
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mHaveCorrection = true;
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if (DBG) {
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Log.d(TAG, "Auto corrected by AUTOTEXT.");
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}
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mHaveAutoCorrection = true;
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mSuggestions.add(i + 1, autoText);
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i++;
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}
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@ -374,7 +385,7 @@ public class Suggest implements Dictionary.WordCallback {
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}
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public boolean hasMinimalCorrection() {
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return mHaveCorrection;
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return mHaveAutoCorrection;
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}
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private boolean compareCaseInsensitive(final String mLowerOriginalWord,
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@ -36,6 +36,8 @@ import java.text.SimpleDateFormat;
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import java.util.Date;
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public class Utils {
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private static final String TAG = Utils.class.getSimpleName();
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private static boolean DBG = LatinImeLogger.sDBG;
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/**
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* Cancel an {@link AsyncTask}.
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@ -95,6 +97,29 @@ public class Utils {
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|| imm.getEnabledInputMethodSubtypeList(null, false).size() > 1;
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}
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public static boolean shouldBlockedBySafetyNetForAutoCorrection(SuggestedWords suggestions) {
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// Safety net for auto correction.
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// Actually if we hit this safety net, it's actually a bug.
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if (suggestions.size() <= 1 || suggestions.mTypedWordValid) return false;
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CharSequence typedWord = suggestions.getWord(0);
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CharSequence candidateWord = suggestions.getWord(1);
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final int typedWordLength = typedWord.length();
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final int maxEditDistanceOfNativeDictionary = typedWordLength < 5 ? 2 : typedWordLength / 2;
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final int distance = Utils.editDistance(typedWord, candidateWord);
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if (DBG) {
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Log.d(TAG, "Autocorrected edit distance = " + distance
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+ ", " + maxEditDistanceOfNativeDictionary);
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}
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if (distance > maxEditDistanceOfNativeDictionary) {
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Log.w(TAG, "(Error) The edit distance of this correction exceeds limit. "
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+ "Turning off auto-correction.");
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return true;
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} else {
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return false;
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}
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}
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/* package */ static class RingCharBuffer {
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private static RingCharBuffer sRingCharBuffer = new RingCharBuffer();
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private static final char PLACEHOLDER_DELIMITER_CHAR = '\uFFFC';
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