[IMP] point_of_sale: allow to specify the product category displayed by default

addons/point_of_sale/point_of_sale.py

@@ -77,6 +77,7 @@ class pos_config(osv.osv):
         'iface_print_auto': fields.boolean('Automatic Receipt Printing', help='The receipt will automatically be printed at the end of each order'),
         'iface_precompute_cash': fields.boolean('Prefill Cash Payment',  help='The payment input will behave similarily to bank payment input, and will be prefilled with the exact due amount'),
         'iface_tax_included':   fields.boolean('Include Taxes in Prices', help='The displayed prices will always include all taxes, even if the taxes have been setup differently'),
+        'iface_start_categ_id': fields.many2one('pos.category','Start Category', help='The point of sale will display this product category by default. If no category is specified, all available products will be shown'),
         'receipt_header': fields.text('Receipt Header',help="A short text that will be inserted as a header in the printed receipt"),
         'receipt_footer': fields.text('Receipt Footer',help="A short text that will be inserted as a footer in the printed receipt"),
         'proxy_ip':       fields.char('IP Address', help='The hostname or ip address of the hardware proxy, Will be autodetected if left empty', size=45),

addons/point_of_sale/point_of_sale_view.xml

@@ -699,6 +699,7 @@
                                 <field name="iface_vkeyboard" />
                                 <field name="iface_invoicing" />
                                 <field name="iface_precompute_cash" />
+                                <field name="iface_start_categ_id" />
                             </group>
                             <group>
                                 <field name="iface_fullscreen" />

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

@@ -548,7 +548,8 @@ openerp.point_of_sale.load_screens = function load_screens(instance, module){ //
             this.subcategories = [];
             this.product_list_widget = options.product_list_widget || null;
             this.category_cache = new module.DomCache();
-            this.set_category();
+            this.start_categ_id = this.pos.config.iface_start_categ_id ? this.pos.config.iface_start_categ_id[0] : 0;
+            this.set_category(this.pos.db.get_category_by_id(this.start_categ_id));
             
             this.switch_category_handler = function(event){
                 self.set_category(self.pos.db.get_category_by_id(Number(this.dataset['categoryId'])));
@@ -685,7 +686,7 @@ openerp.point_of_sale.load_screens = function load_screens(instance, module){ //
         
         // resets the current category to the root category
         reset_category: function(){
-            this.set_category();
+            this.set_category(this.pos.db.get_category_by_id(this.start_categ_id));
             this.renderElement();
         },