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/*
* 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.gallery3d.ui;
import com.android.gallery3d.app.GalleryActivity;
import com.android.gallery3d.data.MediaDetails;
import com.android.gallery3d.util.Future;
import com.android.gallery3d.util.FutureListener;
import com.android.gallery3d.util.GalleryUtils;
import com.android.gallery3d.util.ReverseGeocoder;
import com.android.gallery3d.util.ThreadPool.Job;
import com.android.gallery3d.util.ThreadPool.JobContext;
import android.content.Context;
import android.location.Address;
import android.os.Handler;
import android.os.Looper;
public class DetailsAddressResolver {
private AddressResolvingListener mListener;
private double[] mLatlng;
private GalleryActivity mContext;
private Future<Address> mAddressLookupJob;
private Handler mHandler;
private class AddressLookupJob implements Job<Address> {
protected AddressLookupJob(double[] latlng) {
mLatlng = latlng;
}
public Address run(JobContext jc) {
ReverseGeocoder geocoder = new ReverseGeocoder(mContext.getAndroidContext());
return geocoder.lookupAddress(mLatlng[0], mLatlng[1], true);
}
}
public interface AddressResolvingListener {
public void onAddressAvailable(String address);
}
public DetailsAddressResolver(GalleryActivity context) {
mContext = context;
mHandler = new Handler(Looper.getMainLooper());
}
public String resolveAddress(double[] latlng, AddressResolvingListener listener) {
mLatlng = latlng;
mListener = listener;
mAddressLookupJob = mContext.getThreadPool().submit(
new AddressLookupJob(latlng),
new FutureListener<Address>() {
public void onFutureDone(final Future<Address> future) {
mAddressLookupJob = null;
if (!future.isCancelled()) {
mHandler.post(new Runnable() {
public void run() {
updateLocation(future.get());
}
});
}
}
});
return GalleryUtils.formatLatitudeLongitude("(%f,%f)", mLatlng[0], mLatlng[1]);
}
private void updateLocation(Address address) {
if (address != null) {
Context context = mContext.getAndroidContext();
String parts[] = {
address.getAdminArea(),
address.getSubAdminArea(),
address.getLocality(),
address.getSubLocality(),
address.getThoroughfare(),
address.getSubThoroughfare(),
address.getPremises(),
address.getPostalCode(),
address.getCountryName()
};
String addressText = "";
for (int i = 0; i < parts.length; i++) {
if (parts[i] == null || parts[i].isEmpty()) continue;
if (!addressText.isEmpty()) {
addressText += ", ";
}
addressText += parts[i];
}
String text = String.format("%s : %s", DetailsHelper.getDetailsName(
context, MediaDetails.INDEX_LOCATION), addressText);
mListener.onAddressAvailable(text);
}
}
public void cancel() {
if (mAddressLookupJob != null) {
mAddressLookupJob.cancel();
mAddressLookupJob = null;
}
}
}
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