A lot of things

resources/js/SubmissionsClass/GalleryManager.js

@@ -12,6 +12,8 @@ export function GalleryManager() {
          */
         images: [],
 
+        dragSrcI: null,
+
         /**
          * Forward to this.images.length
          * @returns {number}
@@ -123,6 +125,25 @@ export function GalleryManager() {
         handleRemoveFile(index){
             this.images[index].handleRemoveFile(null);
             this.images.splice(index, 1);
+        },
+
+        dragStart(index){
+            this.dragSrcI = index;
+        },
+
+        dragOver(e, index){
+            e.preventDefault();
+
+            if( this.dragSrcI === null || this.dragSrcI === index )
+                return;
+
+            const moved = this.images.splice(this.dragSrcI, 1)[0];
+            this.images.splice(index, 0, moved);
+            this.dragSrcI = index;
+        },
+
+        dragEnd(){
+            this.dragSrcI = null;
         }
     }
 }