am 17f326b7: Add beginning of sentence information in PrevWordsInfo.
* commit '17f326b7458c2bde2569e283a96e703755485328': Add beginning of sentence information in PrevWordsInfo.main
commit
1c7a0b0364
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@ -1435,12 +1435,13 @@ public class LatinIME extends InputMethodService implements KeyboardActionListen
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// We're checking the previous word in the text field against the memorized previous
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// We're checking the previous word in the text field against the memorized previous
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// word. If we are composing a word we should have the second word before the cursor
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// word. If we are composing a word we should have the second word before the cursor
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// memorized, otherwise we should have the first.
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// memorized, otherwise we should have the first.
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final CharSequence rereadPrevWord = mInputLogic.getNthPreviousWordForSuggestion(
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final PrevWordsInfo rereadPrevWordsInfo =
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mInputLogic.getPrevWordsInfoFromNthPreviousWordForSuggestion(
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currentSettings.mSpacingAndPunctuations,
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currentSettings.mSpacingAndPunctuations,
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mInputLogic.mWordComposer.isComposingWord() ? 2 : 1);
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mInputLogic.mWordComposer.isComposingWord() ? 2 : 1);
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if (!TextUtils.equals(prevWordsInfo.mPrevWord, rereadPrevWord)) {
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if (!TextUtils.equals(prevWordsInfo.mPrevWord, rereadPrevWordsInfo.mPrevWord)) {
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throw new RuntimeException("Unexpected previous word: "
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throw new RuntimeException("Unexpected previous word: "
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+ prevWordsInfo.mPrevWord + " <> " + rereadPrevWord);
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+ prevWordsInfo.mPrevWord + " <> " + rereadPrevWordsInfo.mPrevWord);
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}
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}
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}
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}
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}
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}
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@ -16,6 +16,9 @@
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package com.android.inputmethod.latin;
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package com.android.inputmethod.latin;
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import android.util.Log;
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// TODO: Support multiple previous words for n-gram.
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public class PrevWordsInfo {
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public class PrevWordsInfo {
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// The previous word. May be null after resetting and before starting a new composing word, or
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// The previous word. May be null after resetting and before starting a new composing word, or
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// when there is no context like at the start of text for example. It can also be set to null
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// when there is no context like at the start of text for example. It can also be set to null
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@ -23,7 +26,18 @@ public class PrevWordsInfo {
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// or a comma.
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// or a comma.
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public final String mPrevWord;
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public final String mPrevWord;
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// TODO: Have sentence separator.
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// Whether the current context is beginning of sentence or not.
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public final boolean mIsBeginningOfSentence;
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// Beginning of sentence.
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public PrevWordsInfo() {
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mPrevWord = null;
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mIsBeginningOfSentence = true;
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}
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public PrevWordsInfo(final String prevWord) {
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public PrevWordsInfo(final String prevWord) {
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mPrevWord = prevWord;
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mPrevWord = prevWord;
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mIsBeginningOfSentence = false;
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}
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}
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}
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}
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@ -538,10 +538,12 @@ public final class RichInputConnection {
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}
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}
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@SuppressWarnings("unused")
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@SuppressWarnings("unused")
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public String getNthPreviousWord(final SpacingAndPunctuations spacingAndPunctuations,
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public PrevWordsInfo getPrevWordsInfoFromNthPreviousWord(
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final int n) {
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final SpacingAndPunctuations spacingAndPunctuations, final int n) {
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mIC = mParent.getCurrentInputConnection();
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mIC = mParent.getCurrentInputConnection();
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if (null == mIC) return null;
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if (null == mIC) {
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return new PrevWordsInfo(null);
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}
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final CharSequence prev = getTextBeforeCursor(LOOKBACK_CHARACTER_NUM, 0);
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final CharSequence prev = getTextBeforeCursor(LOOKBACK_CHARACTER_NUM, 0);
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if (DEBUG_PREVIOUS_TEXT && null != prev) {
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if (DEBUG_PREVIOUS_TEXT && null != prev) {
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final int checkLength = LOOKBACK_CHARACTER_NUM - 1;
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final int checkLength = LOOKBACK_CHARACTER_NUM - 1;
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@ -561,46 +563,57 @@ public final class RichInputConnection {
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}
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}
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}
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}
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}
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}
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return getNthPreviousWord(prev, spacingAndPunctuations, n);
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return getPrevWordsInfoFromNthPreviousWord(prev, spacingAndPunctuations, n);
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}
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}
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private static boolean isSeparator(final int code, final int[] sortedSeparators) {
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private static boolean isSeparator(final int code, final int[] sortedSeparators) {
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return Arrays.binarySearch(sortedSeparators, code) >= 0;
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return Arrays.binarySearch(sortedSeparators, code) >= 0;
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}
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}
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// Get the nth word before cursor. n = 1 retrieves the word immediately before the cursor,
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// Get information of the nth word before cursor. n = 1 retrieves the word immediately before
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// n = 2 retrieves the word before that, and so on. This splits on whitespace only.
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// the cursor, n = 2 retrieves the word before that, and so on. This splits on whitespace only.
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// Also, it won't return words that end in a separator (if the nth word before the cursor
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// Also, it won't return words that end in a separator (if the nth word before the cursor
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// ends in a separator, it returns null).
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// ends in a separator, it returns information represents beginning-of-sentence).
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// Example :
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// Example :
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// (n = 1) "abc def|" -> def
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// (n = 1) "abc def|" -> def
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// (n = 1) "abc def |" -> def
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// (n = 1) "abc def |" -> def
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// (n = 1) "abc def. |" -> null
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// (n = 1) "abc def. |" -> beginning-of-sentence
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// (n = 1) "abc def . |" -> null
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// (n = 1) "abc def . |" -> beginning-of-sentence
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// (n = 2) "abc def|" -> abc
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// (n = 2) "abc def|" -> abc
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// (n = 2) "abc def |" -> abc
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// (n = 2) "abc def |" -> abc
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// (n = 2) "abc def. |" -> abc
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// (n = 2) "abc def. |" -> abc
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// (n = 2) "abc def . |" -> def
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// (n = 2) "abc def . |" -> def
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// (n = 2) "abc|" -> null
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// (n = 2) "abc|" -> beginning-of-sentence
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// (n = 2) "abc |" -> null
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// (n = 2) "abc |" -> beginning-of-sentence
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// (n = 2) "abc. def|" -> null
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// (n = 2) "abc. def|" -> beginning-of-sentence
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public static String getNthPreviousWord(final CharSequence prev,
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public static PrevWordsInfo getPrevWordsInfoFromNthPreviousWord(final CharSequence prev,
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final SpacingAndPunctuations spacingAndPunctuations, final int n) {
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final SpacingAndPunctuations spacingAndPunctuations, final int n) {
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if (prev == null) return null;
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if (prev == null) return new PrevWordsInfo(null);
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final String[] w = spaceRegex.split(prev);
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final String[] w = spaceRegex.split(prev);
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// If we can't find n words, or we found an empty word, return null.
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// If we can't find n words, or we found an empty word, the context is
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if (w.length < n) return null;
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// beginning-of-sentence.
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if (w.length < n) {
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return new PrevWordsInfo();
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}
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final String nthPrevWord = w[w.length - n];
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final String nthPrevWord = w[w.length - n];
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final int length = nthPrevWord.length();
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final int length = nthPrevWord.length();
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if (length <= 0) return null;
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if (length <= 0) {
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return new PrevWordsInfo();
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}
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// If ends in a separator, return null
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// If ends in a sentence separator, the context is beginning-of-sentence.
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final char lastChar = nthPrevWord.charAt(length - 1);
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final char lastChar = nthPrevWord.charAt(length - 1);
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if (spacingAndPunctuations.isSentenceSeparator(lastChar)) {
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new PrevWordsInfo();
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}
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// If ends in a word separator or connector, the context is unclear.
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// TODO: Return meaningful context for this case.
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if (spacingAndPunctuations.isWordSeparator(lastChar)
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if (spacingAndPunctuations.isWordSeparator(lastChar)
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|| spacingAndPunctuations.isWordConnector(lastChar)) return null;
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|| spacingAndPunctuations.isWordConnector(lastChar)) {
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return new PrevWordsInfo(null);
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return nthPrevWord;
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}
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return new PrevWordsInfo(nthPrevWord);
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}
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}
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/**
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/**
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@ -371,12 +371,12 @@ public final class WordComposer {
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* Also, batch input needs to know about the current caps mode to display correctly
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* Also, batch input needs to know about the current caps mode to display correctly
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* capitalized suggestions.
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* capitalized suggestions.
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* @param mode the mode at the time of start
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* @param mode the mode at the time of start
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* @param previousWord the previous word as context for suggestions. May be null if none.
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* @param prevWordsInfo the information of previous words
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*/
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*/
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public void setCapitalizedModeAndPreviousWordAtStartComposingTime(final int mode,
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public void setCapitalizedModeAndPreviousWordAtStartComposingTime(final int mode,
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final CharSequence previousWord) {
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final PrevWordsInfo prevWordsInfo) {
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mCapitalizedMode = mode;
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mCapitalizedMode = mode;
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mPrevWordsInfo = new PrevWordsInfo(null == previousWord ? null : previousWord.toString());
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mPrevWordsInfo = prevWordsInfo;
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}
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}
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/**
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/**
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@ -575,7 +575,7 @@ public final class InputLogic {
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mWordComposer.setCapitalizedModeAndPreviousWordAtStartComposingTime(
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mWordComposer.setCapitalizedModeAndPreviousWordAtStartComposingTime(
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getActualCapsMode(settingsValues, keyboardSwitcher.getKeyboardShiftMode()),
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getActualCapsMode(settingsValues, keyboardSwitcher.getKeyboardShiftMode()),
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// Prev word is 1st word before cursor
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// Prev word is 1st word before cursor
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getNthPreviousWordForSuggestion(
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getPrevWordsInfoFromNthPreviousWordForSuggestion(
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settingsValues.mSpacingAndPunctuations, 1 /* nthPreviousWord */));
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settingsValues.mSpacingAndPunctuations, 1 /* nthPreviousWord */));
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}
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}
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@ -614,7 +614,8 @@ public final class InputLogic {
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getCurrentAutoCapsState(settingsValues), getCurrentRecapitalizeState());
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getCurrentAutoCapsState(settingsValues), getCurrentRecapitalizeState());
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mWordComposer.setCapitalizedModeAndPreviousWordAtStartComposingTime(
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mWordComposer.setCapitalizedModeAndPreviousWordAtStartComposingTime(
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getActualCapsMode(settingsValues,
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getActualCapsMode(settingsValues,
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keyboardSwitcher.getKeyboardShiftMode()), commitParts[0]);
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keyboardSwitcher.getKeyboardShiftMode()),
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new PrevWordsInfo(commitParts[0]));
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++mAutoCommitSequenceNumber;
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++mAutoCommitSequenceNumber;
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}
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}
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}
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}
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@ -765,7 +766,8 @@ public final class InputLogic {
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// We pass 1 to getPreviousWordForSuggestion because we were not composing a word
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// We pass 1 to getPreviousWordForSuggestion because we were not composing a word
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// yet, so the word we want is the 1st word before the cursor.
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// yet, so the word we want is the 1st word before the cursor.
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mWordComposer.setCapitalizedModeAndPreviousWordAtStartComposingTime(
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mWordComposer.setCapitalizedModeAndPreviousWordAtStartComposingTime(
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inputTransaction.mShiftState, getNthPreviousWordForSuggestion(
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inputTransaction.mShiftState,
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getPrevWordsInfoFromNthPreviousWordForSuggestion(
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settingsValues.mSpacingAndPunctuations, 1 /* nthPreviousWord */));
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settingsValues.mSpacingAndPunctuations, 1 /* nthPreviousWord */));
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}
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}
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mConnection.setComposingText(getTextWithUnderline(
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mConnection.setComposingText(getTextWithUnderline(
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@ -1326,7 +1328,8 @@ public final class InputLogic {
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// Show predictions.
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// Show predictions.
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mWordComposer.setCapitalizedModeAndPreviousWordAtStartComposingTime(
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mWordComposer.setCapitalizedModeAndPreviousWordAtStartComposingTime(
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WordComposer.CAPS_MODE_OFF,
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WordComposer.CAPS_MODE_OFF,
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getNthPreviousWordForSuggestion(settingsValues.mSpacingAndPunctuations, 1));
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getPrevWordsInfoFromNthPreviousWordForSuggestion(
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settingsValues.mSpacingAndPunctuations, 1));
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mLatinIME.mHandler.postUpdateSuggestionStrip();
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mLatinIME.mHandler.postUpdateSuggestionStrip();
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return;
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return;
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}
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}
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@ -1374,11 +1377,9 @@ public final class InputLogic {
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// We want the previous word for suggestion. If we have chars in the word
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// We want the previous word for suggestion. If we have chars in the word
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// before the cursor, then we want the word before that, hence 2; otherwise,
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// before the cursor, then we want the word before that, hence 2; otherwise,
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// we want the word immediately before the cursor, hence 1.
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// we want the word immediately before the cursor, hence 1.
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final CharSequence prevWord = getNthPreviousWordForSuggestion(
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final PrevWordsInfo prevWordsInfo = getPrevWordsInfoFromNthPreviousWordForSuggestion(
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settingsValues.mSpacingAndPunctuations,
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settingsValues.mSpacingAndPunctuations,
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0 == numberOfCharsInWordBeforeCursor ? 1 : 2);
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0 == numberOfCharsInWordBeforeCursor ? 1 : 2);
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final PrevWordsInfo prevWordsInfo =
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new PrevWordsInfo(prevWord != null ? prevWord.toString() : null);
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mWordComposer.setComposingWord(codePoints,
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mWordComposer.setComposingWord(codePoints,
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mLatinIME.getCoordinatesForCurrentKeyboard(codePoints), prevWordsInfo);
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mLatinIME.getCoordinatesForCurrentKeyboard(codePoints), prevWordsInfo);
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mWordComposer.setCursorPositionWithinWord(
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mWordComposer.setCursorPositionWithinWord(
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@ -1590,21 +1591,23 @@ public final class InputLogic {
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}
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}
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/**
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/**
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* Get the nth previous word before the cursor as context for the suggestion process.
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* Get information fo previous words from the nth previous word before the cursor as context
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* for the suggestion process.
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* @param spacingAndPunctuations the current spacing and punctuations settings.
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* @param spacingAndPunctuations the current spacing and punctuations settings.
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* @param nthPreviousWord reverse index of the word to get (1-indexed)
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* @param nthPreviousWord reverse index of the word to get (1-indexed)
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* @return the nth previous word before the cursor.
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* @return the information of previous words
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*/
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*/
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// TODO: Make this private
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// TODO: Make this private
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public CharSequence getNthPreviousWordForSuggestion(
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public PrevWordsInfo getPrevWordsInfoFromNthPreviousWordForSuggestion(
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final SpacingAndPunctuations spacingAndPunctuations, final int nthPreviousWord) {
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final SpacingAndPunctuations spacingAndPunctuations, final int nthPreviousWord) {
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if (spacingAndPunctuations.mCurrentLanguageHasSpaces) {
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if (spacingAndPunctuations.mCurrentLanguageHasSpaces) {
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// If we are typing in a language with spaces we can just look up the previous
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// If we are typing in a language with spaces we can just look up the previous
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// word from textview.
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// word information from textview.
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return mConnection.getNthPreviousWord(spacingAndPunctuations, nthPreviousWord);
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return mConnection.getPrevWordsInfoFromNthPreviousWord(
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spacingAndPunctuations, nthPreviousWord);
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} else {
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} else {
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return LastComposedWord.NOT_A_COMPOSED_WORD == mLastComposedWord ? null
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return LastComposedWord.NOT_A_COMPOSED_WORD == mLastComposedWord ? new PrevWordsInfo()
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: mLastComposedWord.mCommittedWord;
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: new PrevWordsInfo(mLastComposedWord.mCommittedWord.toString());
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}
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}
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}
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}
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@ -1972,8 +1975,8 @@ public final class InputLogic {
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suggestedWords);
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suggestedWords);
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// Use the 2nd previous word as the previous word because the 1st previous word is the word
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// Use the 2nd previous word as the previous word because the 1st previous word is the word
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// to be committed.
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// to be committed.
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final PrevWordsInfo prevWordsInfo = new PrevWordsInfo(mConnection.getNthPreviousWord(
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final PrevWordsInfo prevWordsInfo = mConnection.getPrevWordsInfoFromNthPreviousWord(
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settingsValues.mSpacingAndPunctuations, 2));
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settingsValues.mSpacingAndPunctuations, 2);
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mConnection.commitText(chosenWordWithSuggestions, 1);
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mConnection.commitText(chosenWordWithSuggestions, 1);
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// Add the word to the user history dictionary
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// Add the word to the user history dictionary
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performAdditionToUserHistoryDictionary(settingsValues, chosenWord, prevWordsInfo);
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performAdditionToUserHistoryDictionary(settingsValues, chosenWord, prevWordsInfo);
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@ -155,13 +155,17 @@ public class RichInputConnectionAndTextRangeTests extends AndroidTestCase {
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*/
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*/
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public void testGetPreviousWord() {
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public void testGetPreviousWord() {
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// If one of the following cases breaks, the bigram suggestions won't work.
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// If one of the following cases breaks, the bigram suggestions won't work.
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assertEquals(RichInputConnection.getNthPreviousWord(
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assertEquals(RichInputConnection.getPrevWordsInfoFromNthPreviousWord(
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"abc def", mSpacingAndPunctuations, 2), "abc");
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"abc def", mSpacingAndPunctuations, 2).mPrevWord, "abc");
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assertNull(RichInputConnection.getNthPreviousWord(
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assertNull(RichInputConnection.getPrevWordsInfoFromNthPreviousWord(
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"abc", mSpacingAndPunctuations, 2));
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"abc", mSpacingAndPunctuations, 2).mPrevWord);
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assertNull(RichInputConnection.getNthPreviousWord(
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assertNull(RichInputConnection.getPrevWordsInfoFromNthPreviousWord(
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"abc. def", mSpacingAndPunctuations, 2));
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"abc. def", mSpacingAndPunctuations, 2).mPrevWord);
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assertFalse(RichInputConnection.getPrevWordsInfoFromNthPreviousWord(
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"abc def", mSpacingAndPunctuations, 2).mIsBeginningOfSentence);
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assertTrue(RichInputConnection.getPrevWordsInfoFromNthPreviousWord(
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"abc", mSpacingAndPunctuations, 2).mIsBeginningOfSentence);
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// The following tests reflect the current behavior of the function
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// The following tests reflect the current behavior of the function
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// RichInputConnection#getNthPreviousWord.
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// RichInputConnection#getNthPreviousWord.
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// TODO: However at this time, the code does never go
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// TODO: However at this time, the code does never go
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@ -169,23 +173,23 @@ public class RichInputConnectionAndTextRangeTests extends AndroidTestCase {
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// this function if needed - especially since it does not seem very
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// this function if needed - especially since it does not seem very
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// logical. These tests are just there to catch any unintentional
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// logical. These tests are just there to catch any unintentional
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// changes in the behavior of the RichInputConnection#getPreviousWord method.
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// changes in the behavior of the RichInputConnection#getPreviousWord method.
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assertEquals(RichInputConnection.getNthPreviousWord(
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assertEquals(RichInputConnection.getPrevWordsInfoFromNthPreviousWord(
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"abc def ", mSpacingAndPunctuations, 2), "abc");
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"abc def ", mSpacingAndPunctuations, 2).mPrevWord, "abc");
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assertEquals(RichInputConnection.getNthPreviousWord(
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assertEquals(RichInputConnection.getPrevWordsInfoFromNthPreviousWord(
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"abc def.", mSpacingAndPunctuations, 2), "abc");
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"abc def.", mSpacingAndPunctuations, 2).mPrevWord, "abc");
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assertEquals(RichInputConnection.getNthPreviousWord(
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assertEquals(RichInputConnection.getPrevWordsInfoFromNthPreviousWord(
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"abc def .", mSpacingAndPunctuations, 2), "def");
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"abc def .", mSpacingAndPunctuations, 2).mPrevWord, "def");
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assertNull(RichInputConnection.getNthPreviousWord(
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assertEquals(RichInputConnection.getPrevWordsInfoFromNthPreviousWord(
|
||||||
"abc ", mSpacingAndPunctuations, 2));
|
"abc ", mSpacingAndPunctuations, 2).mPrevWord, null);
|
||||||
|
|
||||||
assertEquals(RichInputConnection.getNthPreviousWord(
|
assertEquals(RichInputConnection.getPrevWordsInfoFromNthPreviousWord(
|
||||||
"abc def", mSpacingAndPunctuations, 1), "def");
|
"abc def", mSpacingAndPunctuations, 1).mPrevWord, "def");
|
||||||
assertEquals(RichInputConnection.getNthPreviousWord(
|
assertEquals(RichInputConnection.getPrevWordsInfoFromNthPreviousWord(
|
||||||
"abc def ", mSpacingAndPunctuations, 1), "def");
|
"abc def ", mSpacingAndPunctuations, 1).mPrevWord, "def");
|
||||||
assertNull(RichInputConnection.getNthPreviousWord(
|
assertNull(RichInputConnection.getPrevWordsInfoFromNthPreviousWord(
|
||||||
"abc def.", mSpacingAndPunctuations, 1));
|
"abc def.", mSpacingAndPunctuations, 1).mPrevWord);
|
||||||
assertNull(RichInputConnection.getNthPreviousWord(
|
assertNull(RichInputConnection.getPrevWordsInfoFromNthPreviousWord(
|
||||||
"abc def .", mSpacingAndPunctuations, 1));
|
"abc def .", mSpacingAndPunctuations, 1).mPrevWord);
|
||||||
}
|
}
|
||||||
|
|
||||||
/**
|
/**
|
||||||
|
|
Loading…
Reference in New Issue