97 lines
4.1 KiB
Java
97 lines
4.1 KiB
Java
/*
|
|
* 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.compat;
|
|
|
|
import android.content.Context;
|
|
import android.text.Spannable;
|
|
import android.text.SpannableString;
|
|
import android.text.Spanned;
|
|
import android.text.TextUtils;
|
|
import android.text.style.SuggestionSpan;
|
|
|
|
import com.android.inputmethod.latin.LatinImeLogger;
|
|
import com.android.inputmethod.latin.SuggestedWords;
|
|
import com.android.inputmethod.latin.SuggestionSpanPickedNotificationReceiver;
|
|
import com.android.inputmethod.latin.utils.CollectionUtils;
|
|
|
|
import java.lang.reflect.Field;
|
|
import java.util.ArrayList;
|
|
|
|
public final class SuggestionSpanUtils {
|
|
// Note that SuggestionSpan.FLAG_AUTO_CORRECTION has been introduced
|
|
// in API level 15 (Build.VERSION_CODES.ICE_CREAM_SANDWICH_MR1).
|
|
public static final Field FIELD_FLAG_AUTO_CORRECTION = CompatUtils.getField(
|
|
SuggestionSpan.class, "FLAG_AUTO_CORRECTION");
|
|
public static final Integer OBJ_FLAG_AUTO_CORRECTION = (Integer) CompatUtils.getFieldValue(
|
|
null /* receiver */, null /* defaultValue */, FIELD_FLAG_AUTO_CORRECTION);
|
|
|
|
static {
|
|
if (LatinImeLogger.sDBG) {
|
|
if (OBJ_FLAG_AUTO_CORRECTION == null) {
|
|
throw new RuntimeException("Field is accidentially null.");
|
|
}
|
|
}
|
|
}
|
|
|
|
private SuggestionSpanUtils() {
|
|
// This utility class is not publicly instantiable.
|
|
}
|
|
|
|
public static CharSequence getTextWithAutoCorrectionIndicatorUnderline(
|
|
final Context context, final String text) {
|
|
if (TextUtils.isEmpty(text) || OBJ_FLAG_AUTO_CORRECTION == null) {
|
|
return text;
|
|
}
|
|
final Spannable spannable = new SpannableString(text);
|
|
final SuggestionSpan suggestionSpan = new SuggestionSpan(context, null /* locale */,
|
|
new String[] {} /* suggestions */, OBJ_FLAG_AUTO_CORRECTION,
|
|
SuggestionSpanPickedNotificationReceiver.class);
|
|
spannable.setSpan(suggestionSpan, 0, text.length(),
|
|
Spanned.SPAN_EXCLUSIVE_EXCLUSIVE | Spanned.SPAN_COMPOSING);
|
|
return spannable;
|
|
}
|
|
|
|
public static CharSequence getTextWithSuggestionSpan(final Context context,
|
|
final String pickedWord, final SuggestedWords suggestedWords,
|
|
final boolean dictionaryAvailable) {
|
|
if (!dictionaryAvailable || TextUtils.isEmpty(pickedWord) || suggestedWords.isEmpty()
|
|
|| suggestedWords.mIsPrediction || suggestedWords.mIsPunctuationSuggestions) {
|
|
return pickedWord;
|
|
}
|
|
|
|
final Spannable spannable = new SpannableString(pickedWord);
|
|
final ArrayList<String> suggestionsList = CollectionUtils.newArrayList();
|
|
for (int i = 0; i < suggestedWords.size(); ++i) {
|
|
if (suggestionsList.size() >= SuggestionSpan.SUGGESTIONS_MAX_SIZE) {
|
|
break;
|
|
}
|
|
final String word = suggestedWords.getWord(i);
|
|
if (!TextUtils.equals(pickedWord, word)) {
|
|
suggestionsList.add(word.toString());
|
|
}
|
|
}
|
|
|
|
// TODO: We should avoid adding suggestion span candidates that came from the bigram
|
|
// prediction.
|
|
final SuggestionSpan suggestionSpan = new SuggestionSpan(context, null /* locale */,
|
|
suggestionsList.toArray(new String[suggestionsList.size()]), 0 /* flags */,
|
|
SuggestionSpanPickedNotificationReceiver.class);
|
|
spannable.setSpan(suggestionSpan, 0, pickedWord.length(), Spanned.SPAN_EXCLUSIVE_EXCLUSIVE);
|
|
return spannable;
|
|
}
|
|
}
|