[FIX] stock: inventory at date for single product

On stock list view of a single product, when user click on "Inventory at
Date" button, the displayed report shows all products.
This commit makes the report only shows the current product.

Task #2039731

addons/stock/static/src/js/inventory_report_list_controller.js

@@ -34,14 +34,22 @@ var InventoryReportListController = ListController.extend({
      * inventory at a given date.
      */
     _onOpenWizard: function () {
+        var state = this.model.get(this.handle, {raw: true});
+        var stateContext = state.getContext();
+        var context = {
+            active_model: this.modelName,
+        };
+        if (stateContext.default_product_id) {
+            context.product_id = stateContext.default_product_id;
+        } else if (stateContext.product_tmpl_id) {
+            context.product_tmpl_id = stateContext.product_tmpl_id;
+        }
         this.do_action({
             res_model: 'stock.quantity.history',
             views: [[false, 'form']],
             target: 'new',
             type: 'ir.actions.act_window',
-            context: {
-                active_model: this.modelName,
-            }
+            context: context,
         });
     },
 });

addons/stock/wizard/stock_quantity_history.py

@@ -2,6 +2,7 @@
 # Part of Odoo. See LICENSE file for full copyright and licensing details.
 
 from odoo import fields, models, _
+from odoo.osv import expression
 
 
 class StockQuantityHistory(models.TransientModel):
@@ -15,6 +16,13 @@ class StockQuantityHistory(models.TransientModel):
     def open_at_date(self):
         tree_view_id = self.env.ref('stock.view_stock_product_tree').id
         form_view_id = self.env.ref('stock.product_form_view_procurement_button').id
+        domain = [('type', '=', 'product')]
+        product_id = self.env.context.get('product_id', False)
+        product_tmpl_id = self.env.context.get('product_tmpl_id', False)
+        if product_id:
+            domain = expression.AND([domain, [('id', '=', product_id)]])
+        elif product_tmpl_id:
+            domain = expression.AND([domain, [('product_tmpl_id', '=', product_tmpl_id)]])
         # We pass `to_date` in the context so that `qty_available` will be computed across
         # moves until date.
         action = {
@@ -23,7 +31,7 @@ class StockQuantityHistory(models.TransientModel):
             'view_mode': 'tree,form',
             'name': _('Products'),
             'res_model': 'product.product',
-            'domain': "[('type', '=', 'product')]",
+            'domain': domain,
             'context': dict(self.env.context, to_date=self.inventory_datetime),
         }
         return action