/*
#
# Gramps - a GTK+/GNOME based genealogy program
#
# Copyright 2023-     Serge Noiraud
#
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 2 of the License, or
# (at your option) any later version.
#
# 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 General Public License for more details.
#
# You should have received a copy of the GNU General Public License along
# with this program; if not, see <https://www.gnu.org/licenses/>.
#

**************************************************************************************************
GRAMPS javascript for lightbox feature
Style Name: n/a (used by many different styles)
Javascript Author: Serge Noiraud based on W3C: https://www.w3schools.com/howto/howto_js_lightbox.asp
**************************************************************************************************/

// Open the Modal
function openModal() {
  document.getElementById("MediaModal").style.display = "block";
}

// Close the Modal
function closeModal() {
  document.getElementById("MediaModal").style.display = "none";
}

var slideIndex = 1;
showSlides(slideIndex);

// Next/previous controls
function plusSlides(n) {
  showSlides(slideIndex += n);
}

// Thumbnail image controls
function currentSlide(n) {
  showSlides(slideIndex = n);
}

function showSlides(n) {
  var i;
  var slides = document.getElementsByClassName("MediaSlide");
  if (n > slides.length) {slideIndex = 1}
  if (n < 1) {slideIndex = slides.length}
  for (i = 0; i < slides.length; i++) {
    slides[i].style.display = "none";
  }
  slides[slideIndex-1].style.display = "block";
}
