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/* -*- tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
/*
* This file is part of the LibreOffice project.
*
* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/.
*/
package org.libreoffice.storage.local;
import java.io.File;
import org.libreoffice.storage.IFile;
import org.libreoffice.R;
import android.Manifest;
import android.content.Context;
import android.content.pm.PackageManager;
import android.os.Build;
import android.os.Environment;
import android.support.v4.content.ContextCompat;
import android.util.Log;
/**
* A convenience IDocumentProvider to browse the /sdcard/Documents directory.
*
* Extends LocalDocumentsProvider to overwrite getRootDirectory and set it to
* /sdcard/Documents. Most documents will probably be stored there so there is
* no need for the user to browse the filesystem from the root every time.
*/
public class LocalDocumentsDirectoryProvider extends LocalDocumentsProvider {
public LocalDocumentsDirectoryProvider(int id) {
super(id);
}
private static File getDocumentsDir() {
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.KITKAT) {
// DIRECTORY_DOCUMENTS is 19 or later only
return Environment.getExternalStoragePublicDirectory(Environment.DIRECTORY_DOCUMENTS);
} else {
return new File(Environment.getExternalStorageDirectory() + "/Documents");
}
}
@Override
public IFile getRootDirectory(Context context) {
File documentsDirectory = getDocumentsDir();
if (!documentsDirectory.exists()) {
// might be a little counter-intuitive: if we were granted READ permission already, we're also granted the write-permission
// when we ask for it, since they are both in the same storage group (for 5.1 and lower it is granted at install-time already)
// see https://developer.android.com/guide/topics/permissions/requesting.html#perm-groups
if (ContextCompat.checkSelfPermission(context, Manifest.permission.WRITE_EXTERNAL_STORAGE) == PackageManager.PERMISSION_GRANTED) {
if(!documentsDirectory.mkdirs()) {
// fallback to the toplevel dir - might be due to the dir not mounted/used as USB-Mass-Storage or similar
// TODO: handle unavailability of the storage/failure of the mkdir properly
Log.e("LocalDocumentsProvider", "not sure how we ended up here - if we have read permissions to use it in the first place, we also should have the write-permissions..");
documentsDirectory = Environment.getExternalStorageDirectory();
}
}
}
return new LocalFile(documentsDirectory);
}
@Override
public int getNameResource() {
return R.string.local_documents;
}
@Override
public boolean checkProviderAvailability(Context context) {
File documentsDirectory = getDocumentsDir();
return documentsDirectory.exists() && ContextCompat.checkSelfPermission(context, Manifest.permission.WRITE_EXTERNAL_STORAGE) == PackageManager.PERMISSION_GRANTED;
}
}
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