[IMP] sale: add back button

Preparing the sales catalog to odoo 17 release:
  - some functional additions/improvements:
    - adding a button "Back to Quotation" to ease the navigation,
    - make the "empty" help message more friendly and add a button to
      directly create a product,
task-3367295

Part-of: odoo/odoo#126796

addons/sale/models/sale_order_line.py

@@ -1078,12 +1078,6 @@ class SaleOrderLine(models.Model):
                 **self.env.context,
                 **self._get_action_add_from_catalog_extra_context(order),
             },
-            'help': _("""<p class="o_view_nocontent_smiling_face">
-                Create a new product
-            </p><p>
-                You must define a product for everything you sell or purchase,
-                whether it's a storable product, a consumable or a service.
-            </p>"""),
         }
 
     #=== BUSINESS METHODS ===#

addons/sale/static/src/js/product_catalog/kanban_controller.js

@@ -0,0 +1,48 @@
+/** @odoo-module **/
+
+import { KanbanController } from "@web/views/kanban/kanban_controller";
+import { onWillStart } from "@odoo/owl";
+import { useService } from "@web/core/utils/hooks";
+
+
+export class ProductCatalogKanbanController extends KanbanController {
+    static template = "sale.ProductCatalogKanbanController";
+
+    setup() {
+        super.setup();
+        this.action = useService("action");
+        this.orm = useService("orm");
+        this.orderId = this.props.context.order_id;
+
+        onWillStart(async () => {
+            // Define the content of the button.
+            const orderStateInfo = await this.orm.searchRead(
+                "sale.order", [["id", "=", this.orderId]], ["state"]
+            );
+            const orderIsQuotation = ["draft", "sent"].includes(orderStateInfo[0].state);
+            this.buttonString = `Back to ${orderIsQuotation ? "Quotation" : "Order"}`
+        })
+    }
+
+    // Force the slot for the "Back to Quotation" button to always be shown.
+    get canCreate() {
+        return true;
+    }
+
+    async backToQuotation() {
+        // Restore the last form view from the breadcrumbs if breadcrumbs are available.
+        // If, for some weird reason, the user reloads the page then the breadcrumbs are
+        // lost, and we fall back to the form view ourselves.
+        if (this.env.config.breadcrumbs.length > 1) {
+            await this.action.restore();
+        } else {
+            await this.action.doAction({
+                type: "ir.actions.act_window",
+                res_model: "sale.order",
+                views: [[false, "form"]],
+                view_mode: "form",
+                res_id: this.orderId,
+            });
+        }
+    }
+}

addons/sale/static/src/js/product_catalog/kanban_controller.xml

@@ -0,0 +1,8 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<templates xml:space="preserve">
+    <t t-name="sale.ProductCatalogKanbanController" t-inherit="web.KanbanView" t-inherit-mode="primary">
+        <xpath expr="//button[hasclass('o-kanban-button-new')]" position="replace">
+            <button t-out="this.buttonString" type="button" class="btn btn-secondary o-kanban-button-back" t-on-click="this.backToQuotation"/>
+        </xpath>
+    </t>
+</templates>

addons/sale/static/src/js/product_catalog/kanban_renderer.js

@@ -0,0 +1,30 @@
+/** @odoo-module **/
+
+import { KanbanRenderer } from "@web/views/kanban/kanban_renderer";
+import { useService } from "@web/core/utils/hooks";
+
+import { ProductCatalogKanbanRecord } from "./kanban_record";
+
+
+export class ProductCatalogKanbanRenderer extends KanbanRenderer {
+    static template = "sale.ProductCatalogKanbanRenderer";
+    static components = {
+        ...KanbanRenderer.components,
+        KanbanRecord: ProductCatalogKanbanRecord
+    };
+
+    setup() {
+        super.setup();
+        this.action = useService("action");
+    }
+
+    async createProduct() {
+        await this.action.doAction({
+            type: "ir.actions.act_window",
+            res_model: "product.product",
+            target: "new",
+            views: [[false, "form"]],
+            view_mode: "form",
+        });
+    }
+}

addons/sale/static/src/js/product_catalog/kanban_renderer.xml

@@ -0,0 +1,22 @@
+<?xml version="1.0" encoding="UTF-8"?>
+
+<templates xml:space="preserve">
+    <t t-name="sale.ProductCatalogKanbanRenderer" t-inherit="web.KanbanRenderer" t-inherit-mode="primary">
+        <t t-if="showNoContentHelper" position="replace">
+            <t t-if="showNoContentHelper">
+                <div class="o_view_nocontent" role="alert">
+                    <div class="o_nocontent_help">
+                        <p class="o_view_nocontent_smiling_face">
+                            No products could be found.<br/>
+                             <button class="mt-2 btn btn-primary" t-on-click="this.createProduct">Create a product</button>
+                        </p>
+                        <p>
+                            You must define a product for everything you sell or purchase,
+                            whether it's a storable product, a consumable or a service.
+                        </p>
+                    </div>
+                </div>
+            </t>
+        </t>
+    </t>
+</templates>

addons/sale/static/src/js/product_catalog/kanban_view.js

@@ -1,18 +1,20 @@
 /** @odoo-module **/
-import { registry } from "@web/core/registry";
-import { KanbanRenderer } from "@web/views/kanban/kanban_renderer";
-import { kanbanView } from "@web/views/kanban/kanban_view";
-import { ProductCatalogKanbanModel } from "./kanban_model";
-import { ProductCatalogKanbanRecord } from "./kanban_record";
 
-export class ProductCatalogKanbanRenderer extends KanbanRenderer {
-    static components = {...KanbanRenderer.components, KanbanRecord: ProductCatalogKanbanRecord};
-}
+import { kanbanView } from "@web/views/kanban/kanban_view";
+import { registry } from "@web/core/registry";
+
+import { ProductCatalogKanbanController } from "./kanban_controller";
+import { ProductCatalogKanbanModel } from "./kanban_model";
+import { ProductCatalogKanbanRenderer } from "./kanban_renderer";
+import { ProductCatalogSearchPanel} from "./search_panel";
+
 
 export const productCatalogKanbanView = {
     ...kanbanView,
+    Controller: ProductCatalogKanbanController,
     Model: ProductCatalogKanbanModel,
     Renderer: ProductCatalogKanbanRenderer,
+    SearchPanel: ProductCatalogSearchPanel,
 };
 
 registry.category("views").add("sale_product_kanban", productCatalogKanbanView);