DragAndDropPermissionsCompat.java
/*
* Copyright (C) 2016 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 androidx.core.view;
import static androidx.annotation.RestrictTo.Scope.LIBRARY_GROUP_PREFIX;
import android.app.Activity;
import android.os.Build;
import android.view.DragAndDropPermissions;
import android.view.DragEvent;
import androidx.annotation.DoNotInline;
import androidx.annotation.NonNull;
import androidx.annotation.Nullable;
import androidx.annotation.RequiresApi;
import androidx.annotation.RestrictTo;
/**
* Helper for accessing features in {@link DragAndDropPermissions} a backwards
* compatible fashion.
*
* <p>
* Learn more in the guide to using
* <a href="/guide/topics/ui/drag-drop#DragPermissionsMultiWindow">drag permissions in multi-window
* mode</a>.
* </p>
*/
public final class DragAndDropPermissionsCompat {
private final DragAndDropPermissions mDragAndDropPermissions;
private DragAndDropPermissionsCompat(DragAndDropPermissions dragAndDropPermissions) {
mDragAndDropPermissions = dragAndDropPermissions;
}
@RestrictTo(LIBRARY_GROUP_PREFIX)
@Nullable
public static DragAndDropPermissionsCompat request(@NonNull Activity activity,
@NonNull DragEvent dragEvent) {
if (Build.VERSION.SDK_INT >= 24) {
DragAndDropPermissions dragAndDropPermissions =
Api24Impl.requestDragAndDropPermissions(activity, dragEvent);
if (dragAndDropPermissions != null) {
return new DragAndDropPermissionsCompat(dragAndDropPermissions);
}
}
return null;
}
/**
* Revoke the permission grant explicitly.
*/
public void release() {
if (Build.VERSION.SDK_INT >= 24) {
Api24Impl.release(mDragAndDropPermissions);
}
}
@RequiresApi(24)
static class Api24Impl {
private Api24Impl() {
// This class is not instantiable.
}
@DoNotInline
static DragAndDropPermissions requestDragAndDropPermissions(Activity activity,
DragEvent event) {
return activity.requestDragAndDropPermissions(event);
}
@DoNotInline
static void release(DragAndDropPermissions dragAndDropPermissions) {
dragAndDropPermissions.release();
}
}
}