feat: disable numpad sign change and restrict quantity modifications for Ojol discount lines

README.md

@@ -21,6 +21,8 @@ This Odoo 19 module enhances the security and auditability of the Point of Sale
 - **Incremental Printing on Send**: When additional items are added to an already sent order, the automatic print on "Send" is filtered to print *only the newly added (additional) items*, preventing duplicate printing of already served items.
 - **Unlock Register PIN/Selection Bypass**: Bypasses the PIN prompt and employee selection when unlocking the register. It unlocks directly with the current/last cashier. Note that opening the register (new session) still requires PIN entry.
 - **Stay on Current Order on Send**: Retains the POS UI on the current table/order screen after clicking "Send" rather than returning to the Floor Screen (table view).
+- **Disable Numpad Sign Change**: Disables the "+/-" button on the POS numpad to prevent manual negative price input or quantity negation.
+- **Lock Ojol Discount Quantity**: Blocks quantity changes (via numpad and keyboard) and configuration edits (via long press) on the "Diskon Ojol" product lines on POS orders.
 
 
 ## Dependencies

static/src/app/components/numpad/numpad_patch.js

@@ -0,0 +1,18 @@
+/** @odoo-module */
+
+import { Numpad } from "@point_of_sale/app/components/numpad/numpad";
+import { patch } from "@web/core/utils/patch";
+import { localization } from "@web/core/l10n/localization";
+
+patch(Numpad.prototype, {
+    get buttons() {
+        return super.buttons.map((btn) => {
+            const btnObj = typeof btn === "object" ? { ...btn } : { value: btn };
+            if (btnObj.value === "-" || btnObj.value === "." || btnObj.value === "," || btnObj.value === localization.decimalPoint) {
+                btnObj.disabled = true;
+            }
+            return btnObj;
+        });
+    }
+});
+

static/src/app/screens/product_screen/order_summary/order_summary_patch.js

@@ -0,0 +1,29 @@
+/** @odoo-module */
+
+import { OrderSummary } from "@point_of_sale/app/screens/product_screen/order_summary/order_summary";
+import { patch } from "@web/core/utils/patch";
+import { AlertDialog } from "@web/core/confirmation_dialog/confirmation_dialog";
+import { _t } from "@web/core/l10n/translation";
+
+patch(OrderSummary.prototype, {
+    async updateSelectedOrderline({ buffer, key }) {
+        const order = this.pos.getOrder();
+        const selectedLine = order ? order.getSelectedOrderline() : null;
+        if (selectedLine && selectedLine.is_ojol_discount && this.pos.numpadMode === "quantity") {
+            this.numberBuffer.reset();
+            this.dialog.add(AlertDialog, {
+                title: _t("Cannot change quantity"),
+                body: _t("The quantity of the Ojol discount line cannot be modified."),
+            });
+            return;
+        }
+        return super.updateSelectedOrderline(...arguments);
+    },
+
+    async onOrderlineLongPress(ev, orderline) {
+        if (orderline && orderline.is_ojol_discount) {
+            return;
+        }
+        return super.onOrderlineLongPress(...arguments);
+    }
+});