137 lines
4.2 KiB
Java
137 lines
4.2 KiB
Java
/*
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* Copyright (C) 2017 Vincent Breitmoser <v.breitmoser@mugenguild.com>
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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package org.sufficientlysecure.keychain.ui.keyview.loader;
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import java.util.Date;
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import android.content.ContentResolver;
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import android.content.Context;
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import android.database.Cursor;
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import android.support.v4.content.AsyncTaskLoader;
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import android.util.Log;
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import org.sufficientlysecure.keychain.Constants;
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import org.sufficientlysecure.keychain.provider.KeychainContract.UpdatedKeys;
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import org.sufficientlysecure.keychain.ui.keyview.loader.KeyserverStatusLoader.KeyserverStatus;
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public class KeyserverStatusLoader extends AsyncTaskLoader<KeyserverStatus> {
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public static final String[] PROJECTION = new String[] {
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UpdatedKeys.LAST_UPDATED,
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UpdatedKeys.SEEN_ON_KEYSERVERS
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};
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private static final int INDEX_LAST_UPDATED = 0;
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private static final int INDEX_SEEN_ON_KEYSERVERS = 1;
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private final ContentResolver contentResolver;
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private final long masterKeyId;
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private KeyserverStatus cachedResult;
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public KeyserverStatusLoader(Context context, ContentResolver contentResolver, long masterKeyId) {
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super(context);
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this.contentResolver = contentResolver;
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this.masterKeyId = masterKeyId;
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}
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@Override
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public KeyserverStatus loadInBackground() {
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Cursor cursor = contentResolver.query(UpdatedKeys.CONTENT_URI, PROJECTION,
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UpdatedKeys.MASTER_KEY_ID + " = ?", new String[] { Long.toString(masterKeyId) }, null);
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if (cursor == null) {
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Log.e(Constants.TAG, "Error loading key items!");
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return null;
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}
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try {
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if (cursor.moveToFirst()) {
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boolean isPublished = cursor.getInt(INDEX_SEEN_ON_KEYSERVERS) != 0;
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Date lastUpdated = cursor.isNull(INDEX_LAST_UPDATED) ?
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null : new Date(cursor.getLong(INDEX_LAST_UPDATED) * 1000);
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return new KeyserverStatus(masterKeyId, isPublished, lastUpdated);
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}
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return new KeyserverStatus(masterKeyId);
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} finally {
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cursor.close();
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}
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}
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@Override
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public void deliverResult(KeyserverStatus keySubkeyStatus) {
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cachedResult = keySubkeyStatus;
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if (isStarted()) {
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super.deliverResult(keySubkeyStatus);
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}
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}
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@Override
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protected void onStartLoading() {
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if (cachedResult != null) {
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deliverResult(cachedResult);
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}
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if (takeContentChanged() || cachedResult == null) {
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forceLoad();
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}
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}
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public static class KeyserverStatus {
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private final long masterKeyId;
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private final boolean isPublished;
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private final Date lastUpdated;
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KeyserverStatus(long masterKeyId, boolean isPublished, Date lastUpdated) {
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this.masterKeyId = masterKeyId;
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this.isPublished = isPublished;
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this.lastUpdated = lastUpdated;
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}
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KeyserverStatus(long masterKeyId) {
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this.masterKeyId = masterKeyId;
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this.isPublished = false;
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this.lastUpdated = null;
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}
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long getMasterKeyId() {
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return masterKeyId;
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}
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public boolean hasBeenUpdated() {
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return lastUpdated != null;
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}
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public boolean isPublished() {
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if (lastUpdated == null) {
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throw new IllegalStateException("Cannot get publication state if key has never been updated!");
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}
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return isPublished;
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}
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public Date getLastUpdated() {
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return lastUpdated;
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}
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}
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}
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