diff options
Diffstat (limited to 'java/src')
5 files changed, 76 insertions, 45 deletions
diff --git a/java/src/com/android/inputmethod/latin/LatinIME.java b/java/src/com/android/inputmethod/latin/LatinIME.java index 5e45275f8..19c777a3e 100644 --- a/java/src/com/android/inputmethod/latin/LatinIME.java +++ b/java/src/com/android/inputmethod/latin/LatinIME.java @@ -1435,12 +1435,13 @@ public class LatinIME extends InputMethodService implements KeyboardActionListen // We're checking the previous word in the text field against the memorized previous // word. If we are composing a word we should have the second word before the cursor // memorized, otherwise we should have the first. - final CharSequence rereadPrevWord = mInputLogic.getNthPreviousWordForSuggestion( - currentSettings.mSpacingAndPunctuations, - mInputLogic.mWordComposer.isComposingWord() ? 2 : 1); - if (!TextUtils.equals(prevWordsInfo.mPrevWord, rereadPrevWord)) { + final PrevWordsInfo rereadPrevWordsInfo = + mInputLogic.getPrevWordsInfoFromNthPreviousWordForSuggestion( + currentSettings.mSpacingAndPunctuations, + mInputLogic.mWordComposer.isComposingWord() ? 2 : 1); + if (!TextUtils.equals(prevWordsInfo.mPrevWord, rereadPrevWordsInfo.mPrevWord)) { throw new RuntimeException("Unexpected previous word: " - + prevWordsInfo.mPrevWord + " <> " + rereadPrevWord); + + prevWordsInfo.mPrevWord + " <> " + rereadPrevWordsInfo.mPrevWord); } } } diff --git a/java/src/com/android/inputmethod/latin/PrevWordsInfo.java b/java/src/com/android/inputmethod/latin/PrevWordsInfo.java index 9d8543183..ecc8947db 100644 --- a/java/src/com/android/inputmethod/latin/PrevWordsInfo.java +++ b/java/src/com/android/inputmethod/latin/PrevWordsInfo.java @@ -16,6 +16,9 @@ package com.android.inputmethod.latin; +import android.util.Log; + +// TODO: Support multiple previous words for n-gram. public class PrevWordsInfo { // The previous word. May be null after resetting and before starting a new composing word, or // when there is no context like at the start of text for example. It can also be set to null @@ -23,7 +26,18 @@ public class PrevWordsInfo { // or a comma. public final String mPrevWord; + // TODO: Have sentence separator. + // Whether the current context is beginning of sentence or not. + public final boolean mIsBeginningOfSentence; + + // Beginning of sentence. + public PrevWordsInfo() { + mPrevWord = null; + mIsBeginningOfSentence = true; + } + public PrevWordsInfo(final String prevWord) { mPrevWord = prevWord; + mIsBeginningOfSentence = false; } } diff --git a/java/src/com/android/inputmethod/latin/RichInputConnection.java b/java/src/com/android/inputmethod/latin/RichInputConnection.java index 606bb775e..2c54e10aa 100644 --- a/java/src/com/android/inputmethod/latin/RichInputConnection.java +++ b/java/src/com/android/inputmethod/latin/RichInputConnection.java @@ -538,10 +538,12 @@ public final class RichInputConnection { } @SuppressWarnings("unused") - public String getNthPreviousWord(final SpacingAndPunctuations spacingAndPunctuations, - final int n) { + public PrevWordsInfo getPrevWordsInfoFromNthPreviousWord( + final SpacingAndPunctuations spacingAndPunctuations, final int n) { mIC = mParent.getCurrentInputConnection(); - if (null == mIC) return null; + if (null == mIC) { + return new PrevWordsInfo(null); + } final CharSequence prev = getTextBeforeCursor(LOOKBACK_CHARACTER_NUM, 0); if (DEBUG_PREVIOUS_TEXT && null != prev) { final int checkLength = LOOKBACK_CHARACTER_NUM - 1; @@ -561,46 +563,57 @@ public final class RichInputConnection { } } } - return getNthPreviousWord(prev, spacingAndPunctuations, n); + return getPrevWordsInfoFromNthPreviousWord(prev, spacingAndPunctuations, n); } private static boolean isSeparator(final int code, final int[] sortedSeparators) { return Arrays.binarySearch(sortedSeparators, code) >= 0; } - // Get the nth word before cursor. n = 1 retrieves the word immediately before the cursor, - // n = 2 retrieves the word before that, and so on. This splits on whitespace only. + // Get information of the nth word before cursor. n = 1 retrieves the word immediately before + // the cursor, n = 2 retrieves the word before that, and so on. This splits on whitespace only. // Also, it won't return words that end in a separator (if the nth word before the cursor - // ends in a separator, it returns null). + // ends in a separator, it returns information represents beginning-of-sentence). // Example : // (n = 1) "abc def|" -> def // (n = 1) "abc def |" -> def - // (n = 1) "abc def. |" -> null - // (n = 1) "abc def . |" -> null + // (n = 1) "abc def. |" -> beginning-of-sentence + // (n = 1) "abc def . |" -> beginning-of-sentence // (n = 2) "abc def|" -> abc // (n = 2) "abc def |" -> abc // (n = 2) "abc def. |" -> abc // (n = 2) "abc def . |" -> def - // (n = 2) "abc|" -> null - // (n = 2) "abc |" -> null - // (n = 2) "abc. def|" -> null - public static String getNthPreviousWord(final CharSequence prev, + // (n = 2) "abc|" -> beginning-of-sentence + // (n = 2) "abc |" -> beginning-of-sentence + // (n = 2) "abc. def|" -> beginning-of-sentence + public static PrevWordsInfo getPrevWordsInfoFromNthPreviousWord(final CharSequence prev, final SpacingAndPunctuations spacingAndPunctuations, final int n) { - if (prev == null) return null; + if (prev == null) return new PrevWordsInfo(null); final String[] w = spaceRegex.split(prev); - // If we can't find n words, or we found an empty word, return null. - if (w.length < n) return null; + // If we can't find n words, or we found an empty word, the context is + // beginning-of-sentence. + if (w.length < n) { + return new PrevWordsInfo(); + } final String nthPrevWord = w[w.length - n]; final int length = nthPrevWord.length(); - if (length <= 0) return null; + if (length <= 0) { + return new PrevWordsInfo(); + } - // If ends in a separator, return null + // If ends in a sentence separator, the context is beginning-of-sentence. final char lastChar = nthPrevWord.charAt(length - 1); + if (spacingAndPunctuations.isSentenceSeparator(lastChar)) { + new PrevWordsInfo(); + } + // If ends in a word separator or connector, the context is unclear. + // TODO: Return meaningful context for this case. if (spacingAndPunctuations.isWordSeparator(lastChar) - || spacingAndPunctuations.isWordConnector(lastChar)) return null; - - return nthPrevWord; + || spacingAndPunctuations.isWordConnector(lastChar)) { + return new PrevWordsInfo(null); + } + return new PrevWordsInfo(nthPrevWord); } /** diff --git a/java/src/com/android/inputmethod/latin/WordComposer.java b/java/src/com/android/inputmethod/latin/WordComposer.java index 09e905481..6ecb37346 100644 --- a/java/src/com/android/inputmethod/latin/WordComposer.java +++ b/java/src/com/android/inputmethod/latin/WordComposer.java @@ -371,12 +371,12 @@ public final class WordComposer { * Also, batch input needs to know about the current caps mode to display correctly * capitalized suggestions. * @param mode the mode at the time of start - * @param previousWord the previous word as context for suggestions. May be null if none. + * @param prevWordsInfo the information of previous words */ public void setCapitalizedModeAndPreviousWordAtStartComposingTime(final int mode, - final CharSequence previousWord) { + final PrevWordsInfo prevWordsInfo) { mCapitalizedMode = mode; - mPrevWordsInfo = new PrevWordsInfo(null == previousWord ? null : previousWord.toString()); + mPrevWordsInfo = prevWordsInfo; } /** diff --git a/java/src/com/android/inputmethod/latin/inputlogic/InputLogic.java b/java/src/com/android/inputmethod/latin/inputlogic/InputLogic.java index 799a08007..faab76944 100644 --- a/java/src/com/android/inputmethod/latin/inputlogic/InputLogic.java +++ b/java/src/com/android/inputmethod/latin/inputlogic/InputLogic.java @@ -575,7 +575,7 @@ public final class InputLogic { mWordComposer.setCapitalizedModeAndPreviousWordAtStartComposingTime( getActualCapsMode(settingsValues, keyboardSwitcher.getKeyboardShiftMode()), // Prev word is 1st word before cursor - getNthPreviousWordForSuggestion( + getPrevWordsInfoFromNthPreviousWordForSuggestion( settingsValues.mSpacingAndPunctuations, 1 /* nthPreviousWord */)); } @@ -614,7 +614,8 @@ public final class InputLogic { getCurrentAutoCapsState(settingsValues), getCurrentRecapitalizeState()); mWordComposer.setCapitalizedModeAndPreviousWordAtStartComposingTime( getActualCapsMode(settingsValues, - keyboardSwitcher.getKeyboardShiftMode()), commitParts[0]); + keyboardSwitcher.getKeyboardShiftMode()), + new PrevWordsInfo(commitParts[0])); ++mAutoCommitSequenceNumber; } } @@ -765,7 +766,8 @@ public final class InputLogic { // We pass 1 to getPreviousWordForSuggestion because we were not composing a word // yet, so the word we want is the 1st word before the cursor. mWordComposer.setCapitalizedModeAndPreviousWordAtStartComposingTime( - inputTransaction.mShiftState, getNthPreviousWordForSuggestion( + inputTransaction.mShiftState, + getPrevWordsInfoFromNthPreviousWordForSuggestion( settingsValues.mSpacingAndPunctuations, 1 /* nthPreviousWord */)); } mConnection.setComposingText(getTextWithUnderline( @@ -1326,7 +1328,8 @@ public final class InputLogic { // Show predictions. mWordComposer.setCapitalizedModeAndPreviousWordAtStartComposingTime( WordComposer.CAPS_MODE_OFF, - getNthPreviousWordForSuggestion(settingsValues.mSpacingAndPunctuations, 1)); + getPrevWordsInfoFromNthPreviousWordForSuggestion( + settingsValues.mSpacingAndPunctuations, 1)); mLatinIME.mHandler.postUpdateSuggestionStrip(); return; } @@ -1374,11 +1377,9 @@ public final class InputLogic { // We want the previous word for suggestion. If we have chars in the word // before the cursor, then we want the word before that, hence 2; otherwise, // we want the word immediately before the cursor, hence 1. - final CharSequence prevWord = getNthPreviousWordForSuggestion( + final PrevWordsInfo prevWordsInfo = getPrevWordsInfoFromNthPreviousWordForSuggestion( settingsValues.mSpacingAndPunctuations, 0 == numberOfCharsInWordBeforeCursor ? 1 : 2); - final PrevWordsInfo prevWordsInfo = - new PrevWordsInfo(prevWord != null ? prevWord.toString() : null); mWordComposer.setComposingWord(codePoints, mLatinIME.getCoordinatesForCurrentKeyboard(codePoints), prevWordsInfo); mWordComposer.setCursorPositionWithinWord( @@ -1590,21 +1591,23 @@ public final class InputLogic { } /** - * Get the nth previous word before the cursor as context for the suggestion process. + * Get information fo previous words from the nth previous word before the cursor as context + * for the suggestion process. * @param spacingAndPunctuations the current spacing and punctuations settings. * @param nthPreviousWord reverse index of the word to get (1-indexed) - * @return the nth previous word before the cursor. + * @return the information of previous words */ // TODO: Make this private - public CharSequence getNthPreviousWordForSuggestion( + public PrevWordsInfo getPrevWordsInfoFromNthPreviousWordForSuggestion( final SpacingAndPunctuations spacingAndPunctuations, final int nthPreviousWord) { if (spacingAndPunctuations.mCurrentLanguageHasSpaces) { // If we are typing in a language with spaces we can just look up the previous - // word from textview. - return mConnection.getNthPreviousWord(spacingAndPunctuations, nthPreviousWord); + // word information from textview. + return mConnection.getPrevWordsInfoFromNthPreviousWord( + spacingAndPunctuations, nthPreviousWord); } else { - return LastComposedWord.NOT_A_COMPOSED_WORD == mLastComposedWord ? null - : mLastComposedWord.mCommittedWord; + return LastComposedWord.NOT_A_COMPOSED_WORD == mLastComposedWord ? new PrevWordsInfo() + : new PrevWordsInfo(mLastComposedWord.mCommittedWord.toString()); } } @@ -1972,8 +1975,8 @@ public final class InputLogic { suggestedWords); // Use the 2nd previous word as the previous word because the 1st previous word is the word // to be committed. - final PrevWordsInfo prevWordsInfo = new PrevWordsInfo(mConnection.getNthPreviousWord( - settingsValues.mSpacingAndPunctuations, 2)); + final PrevWordsInfo prevWordsInfo = mConnection.getPrevWordsInfoFromNthPreviousWord( + settingsValues.mSpacingAndPunctuations, 2); mConnection.commitText(chosenWordWithSuggestions, 1); // Add the word to the user history dictionary performAdditionToUserHistoryDictionary(settingsValues, chosenWord, prevWordsInfo); |