65 lines
2.4 KiB
Java
65 lines
2.4 KiB
Java
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/*
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* Copyright (C) 2011 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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package com.android.inputmethod.compat;
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import com.android.inputmethod.latin.SuggestedWords;
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import android.content.Context;
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import android.text.Spannable;
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import android.text.SpannableString;
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import android.text.Spanned;
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import java.lang.reflect.Constructor;
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public class SuggestionSpanUtils {
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private static final Class<?> CLASS_SuggestionSpan =
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CompatUtils.getClass("android.text.style.SuggestionSpan");
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private static final Class<?>[] INPUT_TYPE_SuggestionSpan = new Class<?>[] {
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Context.class, String[].class, int.class
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};
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private static final Constructor<?> CONSTRUCTOR_SuggestionSpan =
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CompatUtils.getConstructor(CLASS_SuggestionSpan, INPUT_TYPE_SuggestionSpan);
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public static CharSequence getTextWithSuggestionSpan(
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Context context, CharSequence suggestion, SuggestedWords suggestedWords) {
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if (CONSTRUCTOR_SuggestionSpan == null || suggestedWords == null
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|| suggestedWords.size() == 0) {
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return suggestion;
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}
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final Spannable spannable;
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if (suggestion instanceof Spannable) {
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spannable = (Spannable) suggestion;
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} else {
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spannable = new SpannableString(suggestion);
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}
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// TODO: Use SUGGESTIONS_MAX_SIZE instead of 5.
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final int N = Math.min(5, suggestedWords.size());
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final String[] suggestionsArray = new String[N];
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for (int i = 0; i < N; ++i) {
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suggestionsArray[i] = suggestedWords.getWord(i).toString();
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}
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final Object[] args = {context, suggestionsArray, 0};
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final Object ss = CompatUtils.newInstance(CONSTRUCTOR_SuggestionSpan, args);
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if (ss == null) {
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return suggestion;
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}
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spannable.setSpan(ss, 0, suggestion.length(), Spanned.SPAN_EXCLUSIVE_EXCLUSIVE);
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return spannable;
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}
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}
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