Better logic for IDE

tests/js/drop_studio_file.js

@@ -0,0 +1,52 @@
+const target = arguments[0];
+const offsetX = arguments[1];
+const offsetY = arguments[2];
+
+const document = target.ownerDocument || document;
+const window = document.defaultView || window;
+
+const input = document.createElement('INPUT');
+input.type = 'file';
+input.onchange = function () {
+    const rect = target.getBoundingClientRect();
+    const x = rect.left + (offsetX || (rect.width >> 1));
+    const y = rect.top + (offsetY || (rect.height >> 1));
+
+    const dataTransfer = new DataTransfer();
+    dataTransfer.items.add(input.files[0]);
+
+    console.log('Got uploads: ' + dataTransfer.items);
+
+    for (let t = 0; t < dataTransfer.items.length; t++) {
+        const n = dataTransfer.items[t];
+        console.log("Upload " + t + ": " + n.kind);
+        if (n.kind === "file") {
+            const e = n.getAsFile();
+            if (e) {
+                console.log("File upload " + t + ": " + e.name);
+            } else {
+                console.warn("Cannot get file");
+            }
+        } else {
+            console.warn("Not a file upload");
+        }
+    }
+
+    ['dragenter', 'drop'].forEach(function (name) {
+        console.log('Dispatching mouse event with file transfer')
+        const evt = document.createEvent('MouseEvent');
+        evt.initMouseEvent(name, !0, !0, window, 0, 0, 0, x, y, !1, !1, !1, !1, 0, null);
+        evt.dataTransfer = dataTransfer;
+        target.dispatchEvent(evt);
+    });
+
+    // setTimeout(function () {
+    //     document.body.removeChild(input);
+    // }, 25);
+};
+target.appendChild(input);
+
+console.log('Created file upload input')
+
+// noinspection JSAnnotator
+return input;