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/*
* Copyright (C) 2012 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 android.view.textservice;
import android.os.Parcel;
import android.os.Parcelable;
import java.util.Arrays;
/**
* This class contains a metadata of suggestions returned from a text service
* (e.g. {@link android.service.textservice.SpellCheckerService}).
* The text service uses this class to return the suggestions
* for a sentence. See {@link SuggestionsInfo} which is used for suggestions for a word.
* This class extends the functionality of {@link SuggestionsInfo} as far as this class enables
* you to put multiple {@link SuggestionsInfo}s on a sentence with the offsets and the lengths
* of all {@link SuggestionsInfo}s.
*/
public final class SentenceSuggestionsInfo implements Parcelable {
private final SuggestionsInfo[] mSuggestionsInfos;
private final int[] mOffsets;
private final int[] mLengths;
/**
* Constructor.
* @param suggestionsInfos from the text service
* @param offsets the array of offsets of suggestions
* @param lengths the array of lengths of suggestions
*/
public SentenceSuggestionsInfo(
SuggestionsInfo[] suggestionsInfos, int[] offsets, int[] lengths) {
if (suggestionsInfos == null || offsets == null || lengths == null) {
throw new NullPointerException();
}
if (suggestionsInfos.length != offsets.length || offsets.length != lengths.length) {
throw new IllegalArgumentException();
}
final int infoSize = suggestionsInfos.length;
mSuggestionsInfos = Arrays.copyOf(suggestionsInfos, infoSize);
mOffsets = Arrays.copyOf(offsets, infoSize);
mLengths = Arrays.copyOf(lengths, infoSize);
}
public SentenceSuggestionsInfo(Parcel source) {
final int infoSize = source.readInt();
mSuggestionsInfos = new SuggestionsInfo[infoSize];
source.readTypedArray(mSuggestionsInfos, SuggestionsInfo.CREATOR);
mOffsets = new int[mSuggestionsInfos.length];
source.readIntArray(mOffsets);
mLengths = new int[mSuggestionsInfos.length];
source.readIntArray(mLengths);
}
/**
* Used to package this object into a {@link Parcel}.
*
* @param dest The {@link Parcel} to be written.
* @param flags The flags used for parceling.
*/
@Override
public void writeToParcel(Parcel dest, int flags) {
final int infoSize = mSuggestionsInfos.length;
dest.writeInt(infoSize);
dest.writeTypedArray(mSuggestionsInfos, 0);
dest.writeIntArray(mOffsets);
dest.writeIntArray(mLengths);
}
@Override
public int describeContents() {
return 0;
}
/**
* @return the count of {@link SuggestionsInfo}s this instance holds.
*/
public int getSuggestionsCount() {
return mSuggestionsInfos.length;
}
/**
* @param i the id of {@link SuggestionsInfo}s this instance holds.
* @return a {@link SuggestionsInfo} at the specified id
*/
public SuggestionsInfo getSuggestionsInfoAt(int i) {
if (i >= 0 && i < mSuggestionsInfos.length) {
return mSuggestionsInfos[i];
}
return null;
}
/**
* @param i the id of {@link SuggestionsInfo}s this instance holds
* @return the offset of the specified {@link SuggestionsInfo}
*/
public int getOffsetAt(int i) {
if (i >= 0 && i < mOffsets.length) {
return mOffsets[i];
}
return -1;
}
/**
* @param i the id of {@link SuggestionsInfo}s this instance holds
* @return the length of the specified {@link SuggestionsInfo}
*/
public int getLengthAt(int i) {
if (i >= 0 && i < mLengths.length) {
return mLengths[i];
}
return -1;
}
/**
* Used to make this class parcelable.
*/
public static final Parcelable.Creator<SentenceSuggestionsInfo> CREATOR
= new Parcelable.Creator<SentenceSuggestionsInfo>() {
@Override
public SentenceSuggestionsInfo createFromParcel(Parcel source) {
return new SentenceSuggestionsInfo(source);
}
@Override
public SentenceSuggestionsInfo[] newArray(int size) {
return new SentenceSuggestionsInfo[size];
}
};
}
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