/*
* Copyright (C) 2010 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.apps.tag.record;
import com.android.apps.tag.R;
import com.google.common.annotations.VisibleForTesting;
import com.google.common.base.Preconditions;
import android.app.Activity;
import android.content.Context;
import android.nfc.NdefRecord;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.TextView;
import java.nio.charset.Charset;
import java.util.Arrays;
import java.util.Locale;
/**
* A {@link ParsedNdefRecord} corresponding to a MIME object.
*/
public class MimeRecord extends ParsedNdefRecord {
private final String mType;
private final byte[] mContent;
private MimeRecord(String mimeType, byte[] content) {
mType = Preconditions.checkNotNull(mimeType);
Preconditions.checkNotNull(content);
mContent = Arrays.copyOf(content, content.length);
}
@VisibleForTesting
public String getMimeType() {
return mType;
}
@VisibleForTesting
public byte[] getContent() {
return Arrays.copyOf(mContent, mContent.length);
}
@Override
public View getView(Activity activity, LayoutInflater inflater, ViewGroup parent, int offset) {
TextView text = (TextView) inflater.inflate(R.layout.tag_text, parent, false);
text.setText(mType);
return text;
}
@Override
public String getSnippet(Context context, Locale locale) {
return mType;
}
public static MimeRecord parse(NdefRecord record) {
Preconditions.checkArgument(record.getTnf() == NdefRecord.TNF_MIME_MEDIA);
String type = new String(record.getType(), Charset.forName("US-ASCII"));
byte[] payload = record.getPayload();
return new MimeRecord(type, payload);
}
public static boolean isMime(NdefRecord record) {
try {
parse(record);
return true;
} catch (IllegalArgumentException e) {
return false;
}
}
public static NdefRecord newMimeRecord(String type, byte[] data) {
Preconditions.checkNotNull(type);
Preconditions.checkNotNull(data);
byte[] typeBytes = type.getBytes(Charset.forName("US-ASCII"));
return new NdefRecord(NdefRecord.TNF_MIME_MEDIA, typeBytes, new byte[0], data);
}
}