/*  _____ _
 * |_   _| |_  _ _ ___ ___ _ __  __ _
 *   | | | ' \| '_/ -_) -_) '  \/ _` |_
 *   |_| |_||_|_| \___\___|_|_|_\__,_(_)
 *
 * Threema for Android
 * Copyright (c) 2013-2020 Threema GmbH
 *
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU Affero General Public License, version 3,
 * as published by the Free Software Foundation.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
 * GNU Affero General Public License for more details.
 *
 * You should have received a copy of the GNU Affero General Public License
 * along with this program. If not, see <https://www.gnu.org/licenses/>.
 */

package ch.threema.app.ui;

import android.content.Context;
import android.util.AttributeSet;
import android.view.MotionEvent;
import android.widget.ScrollView;

public class LockableScrollView extends ScrollView {

	private boolean enableScrolling = true;

	public LockableScrollView(Context context) {
		super(context);
	}

	public LockableScrollView(Context context, AttributeSet attrs) {
		super(context, attrs);
	}

	public LockableScrollView(Context context, AttributeSet attrs, int defStyle) {
		super(context, attrs, defStyle);
	}

	public void setScrollingEnabled(boolean enabled) {
		this.enableScrolling = enabled;
	}

	public boolean isScrollable() {
		return this.enableScrolling;
	}

	@Override
	public boolean onTouchEvent(MotionEvent ev) {
		switch (ev.getAction()) {
			case MotionEvent.ACTION_DOWN:
				// if we can scroll pass the event to the superclass
				if (this.enableScrolling) {
					return super.onTouchEvent(ev);
				}
				return this.enableScrolling;
			default:
				return super.onTouchEvent(ev);
		}
	}

	@Override
	public boolean onInterceptTouchEvent(MotionEvent ev) {
		if (!this.enableScrolling) {
			return false;
		} else {
			return super.onInterceptTouchEvent(ev);
		}
	}

}
