src/com/android/documentsui/dirlist/DirectoryDragListener.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 com.android.documentsui.dirlist;

import android.view.DragEvent;
import android.view.View;

import com.android.documentsui.ItemDragListener;

class DirectoryDragListener extends ItemDragListener<DirectoryFragment> {

    DirectoryDragListener(DirectoryFragment fragment) {
        super(fragment);
    }

    @Override
    public boolean onDrag(View v, DragEvent event) {
        final boolean result = super.onDrag(v, event);

        if (event.getAction() == DragEvent.ACTION_DRAG_STARTED) {
            mDragHost.dragStarted();
        } else if (event.getAction() == DragEvent.ACTION_DRAG_ENDED) {
            // getResult() is true if drag was accepted
            mDragHost.dragStopped(event.getResult());
        }

        return result;
    }

    @Override
    public boolean handleDropEventChecked(View v, DragEvent event) {
        return mDragHost.handleDropEvent(v, event);
    }
}