add Save & Close button on the task edit form v1.8 t2

Asset/js/save-close.js

@@ -0,0 +1,39 @@
+/*
+ * OrganonTweaks -- the "Save & Close" button on the task edit form. It is a plain type=button (so it
+ * never becomes the Enter default -- Enter still triggers the core Save), and on click it repoints
+ * the form to the plugin's TaskSaveCloseController and lets Kanboard's own modal submit it. Kanboard
+ * keeps ownership of the POST, CSRF, error re-render, and the X-Ajax-Redirect navigation; we only
+ * change the destination, so the controller redirects to the board instead of the card view.
+ */
+(function () {
+    "use strict";
+
+    document.addEventListener("click", function (e) {
+        if (!e.target || !e.target.closest) {
+            return;
+        }
+
+        var btn = e.target.closest("[data-organon-save-close]");
+        if (!btn) {
+            return;
+        }
+
+        e.preventDefault();
+
+        var form = btn.closest("form");
+        var url = btn.getAttribute("data-url");
+        if (!form || !url) {
+            return;
+        }
+
+        form.setAttribute("action", url);
+
+        if (window.KB && KB.modal && KB.modal.isOpen && KB.modal.isOpen() && KB.modal.submitForm) {
+            KB.modal.submitForm();
+        } else if (form.requestSubmit) {
+            form.requestSubmit();
+        } else {
+            form.submit();
+        }
+    }, false);
+})();