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var set=function() {
var dragged = null;
const urlParams=new URLSearchParams(window.location.search);
const setId = urlParams.get("set_id");
const action = urlParams.get("_action");
function init(e=false) {
if (!setId || action == "download" || action == "edit") {
return;
}
const thumbs = document.getElementsByClassName("thumb");
const cols = document.getElementById("cols").value;
let counter = 0;
for (let thumb of thumbs) {
let thumbnail = thumb.parentNode;
if (e) {
let a = thumb.parentNode;
thumbnail = a.parentNode;
thumbnail.removeChild(a);
}
let photoId = thumb.dataset["photoId"];
counter++;
var nextId = 0;
if (thumbs[counter]) {
nextId = thumbs[counter].dataset["photoId"];
}
thumbnail.className="dragdrop";
thumbnail.dataset["photoId"] = photoId;
thumbnail.insertBefore(makeDropzone(photoId), null);
thumbnail.insertBefore(thumb, null);
thumbnail.insertBefore(makeDropzone(nextId), null);
thumb.addEventListener("dragstart", set.dragStart)
thumb.addEventListener("dragend", set.dragEnd)
document.getElementById("sortorder").style.display = "none";
document.getElementById("updown").style.display = "none";
document.body.style.minWidth=(cols * 170) + 50 + "px";
}
}
function makeDropzone(photoId, insert) {
dropzone = document.createElement("div");
dropzone.className="dropzone";
dropzone.dataset["photoId"] = photoId;
dropzone.addEventListener("dragenter", set.dragEnter);
dropzone.addEventListener("drop", set.handleDrop, false);
dropzone.addEventListener("dragover", set.dragOver);
dropzone.addEventListener("dragleave", set.dragLeave);
return dropzone;
}
function dragStart(e) {
e.dataTransfer.dropEffect = "move";
e.dataTransfer.setDragImage(e.target.cloneNode(), 0,0);
e.target.style.boxShadow="none";
e.target.style.opacity="0.2";
dragged = e.target;
}
function dragEnd(e) {
e.target.style.boxShadow="";
e.target.style.opacity="1";
}
function dragEnter(e) {
e.preventDefault();
e.target.classList.add("dropzone-active");
e.target.parentNode.style.gridColumn="span 2";
}
function dragLeave(e) {
e.target.classList.remove("dropzone-active");
e.target.parentNode.style.gridColumn="";
}
function dragOver(e) {
e.preventDefault();
}
function handleDrop(e) {
e.preventDefault();
dragLeave(e);
let targetId = e.target.dataset["photoId"];
let photoId = dragged.dataset["photoId"];
dragged=null;
movePhoto(setId, photoId, targetId);
}
function movePhoto(setId, photoId, targetId) {
const url = basePath + "set/move?_targetId=" + targetId + "&set_id=" + setId + "&_photoId=" +photoId;
var http=new XMLHttpRequest();
http.responseType = 'json';
http.open("GET", url, true);
http.send();
http.onreadystatechange=function() {
if (http.readyState == XMLHttpRequest.DONE) {
updateThumbs(http);
}
}
}
function updateThumbs(http) {
let order = http.response;
let thumbs = document.getElementsByClassName("thumbnails")[0];
let photos = Array();
for (let photoId of order) {
photos.push(thumbs.querySelector('div.dragdrop[data-photo-id="' + photoId + '"]'));
}
// The photo-id on the dropzones is no longer correct after reshuffle
// so we delete them and recreate
dropzones = Array.from(document.getElementsByClassName("dropzone"));
for (let dz of dropzones) {
dz.remove();
}
for (let photo of photos) {
thumbs.appendChild(photo, null);
}
set.init();
}
return {
init:init,
dragStart:dragStart,
dragEnd:dragEnd,
dragEnter:dragEnter,
dragLeave:dragLeave,
dragOver:dragOver,
handleDrop:handleDrop
};
}();
window.addEventListener("load",set.init,false);
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