[IMP] point_of_sale: accept tips from customers

addons/point_of_sale/point_of_sale.py

@@ -94,6 +94,7 @@ class pos_config(osv.osv):
         'barcode_nomenclature_id':  fields.many2one('barcode.nomenclature','Barcodes', help='Defines what kind of barcodes are available and how they are assigned to products, customers and cashiers', required=True),
         'group_pos_manager_id': fields.many2one('res.groups','Point of Sale Manager Group', help='This field is there to pass the id of the pos manager group to the point of sale client'),
         'group_pos_user_id':    fields.many2one('res.groups','Point of Sale User Group', help='This field is there to pass the id of the pos user group to the point of sale client'),
+        'tip_product_id':       fields.many2one('product.product','Tip Product', help="The product used to encode the customer tip. Leave empty if you do not accept tips."),
     }
 
     def _check_cash_control(self, cr, uid, ids, context=None):

addons/point_of_sale/point_of_sale_view.xml

@@ -700,6 +700,7 @@
                                 <field name="iface_invoicing" />
                                 <field name="iface_precompute_cash" />
                                 <field name="iface_start_categ_id" />
+                                <field name="tip_product_id" />
                             </group>
                             <group>
                                 <field name="iface_fullscreen" />

addons/point_of_sale/static/src/css/pos.css

@@ -1179,6 +1179,8 @@ td {
     border-top: 1px solid;
     border-left: 1px solid;
     border-color: #cacaca;
+    width: 296px;
+    overflow: hidden;
     margin: 0;
 }
 .pos .payment-numpad .numpad button {
@@ -1267,6 +1269,9 @@ td {
     position: relative;
     transition: background-color, border-color, color 150ms linear;
 }
+.payment-screen .payment-buttons .button:hover {
+    background-color: #efefef;
+}
 .payment-screen .payment-buttons .button:first-child {
     border-top-left-radius: 3px;
     border-top-right-radius: 3px;

addons/point_of_sale/static/src/js/models.js

@@ -1470,6 +1470,33 @@ openerp.point_of_sale.load_models = function load_models(instance, module){ //mo
         get_last_orderline: function(){
             return this.orderlines.at(this.orderlines.length -1);
         },
+        get_tip: function() {
+            var tip_product = this.pos.db.get_product_by_id(this.pos.config.tip_product_id[0]);
+            var lines = this.get_orderlines();
+            if (!tip_product) {
+                return 0;
+            } else {
+                for (var i = 0; i < lines.length; i++) {
+                    if (lines[i].get_product() === tip_product) {
+                        return lines[i].get_unit_price();
+                    }
+                }
+                return 0;
+            }
+        },
+        set_tip: function(tip) {
+            var tip_product = this.pos.db.get_product_by_id(this.pos.config.tip_product_id[0]);
+            var lines = this.get_orderlines();
+            if (tip_product) {
+                for (var i = 0; i < lines.length; i++) {
+                    if (lines[i].get_product() === tip_product) {
+                        lines[i].set_unit_price(tip);
+                        return; 
+                    }
+                }
+                this.add_product(tip_product, {quantity: 1, price: tip });
+            }
+        },
         remove_orderline: function( line ){
             this.assert_editable();
             this.orderlines.remove(line);

addons/point_of_sale/static/src/js/screens.js

@@ -1563,6 +1563,27 @@ openerp.point_of_sale.load_screens = function load_screens(instance, module){ //
                 this.$('.js_invoice').removeClass('highlight');
             }
         },
+        click_tip: function(){
+            var self   = this;
+            var order  = this.pos.get_order();
+            var tip    = order.get_tip();
+            var change = order.get_change();
+            var value  = tip;
+
+            if (tip === 0 && change > 0  ) {
+                value = change;
+            }
+
+            this.gui.show_popup('number',{
+                'title': tip ? _t('Change Tip') : _t('Add Tip'),
+                'value': value,
+                'confirm': function(value) {
+                    order.set_tip(Number(value));
+                    self.order_changes();
+                    self.render_paymentlines();
+                }
+            });
+        },
         click_set_customer: function(){
             this.gui.show_screen('clientlist');
         },
@@ -1592,6 +1613,10 @@ openerp.point_of_sale.load_screens = function load_screens(instance, module){ //
             this.$('.js_set_customer').click(function(){
                 self.click_set_customer();
             });
+
+            this.$('.js_tip').click(function(){
+                self.click_tip();
+            });
             this.$('.js_invoice').click(function(){
                 self.click_invoice();
             });

addons/point_of_sale/static/src/xml/pos.xml

@@ -593,6 +593,11 @@
                                 </div>
                             </t>
                         </t>
+                        <t t-if='widget.pos.config.tip_product_id'>
+                            <div class='button js_tip'>
+                                <i class='fa fa-heart' /> Tip 
+                            </div>
+                        </t>
                         <t t-if='widget.pos.config.iface_cashdrawer'>
                             <div class='button js_cashdrawer'>
                                 <i class='fa fa-archive' /> Open Cashbox