Add support for scanning code

sao/CHANGELOG

@@ -1,3 +1,4 @@
+* Support scanning code
 * Reset search offset when domain has changed
 * Add a canonicalize function for domains
 * Add menu to copy selected record from tree view to clipboard

sao/images/tryton-barcode-scanner.svg

@@ -0,0 +1 @@
+<svg xmlns="http://www.w3.org/2000/svg" height="48" viewBox="0 96 960 960" width="48"><path d="M40 936V754h60v122h122v60H40Zm697 0v-60h122V754h60v182H737ZM153 825V326h80v499h-80Zm121 0V326h42v499h-42Zm122 0V326h83v499h-83Zm125 0V326h121v499H521Zm163 0V326h42v499h-42Zm83 0V326h38v499h-38ZM40 398V216h182v60H100v122H40Zm819 0V276H737v-60h182v182h-60Z"/></svg>

sao/images/tryton-sound-off.svg

@@ -0,0 +1 @@
+<svg xmlns="http://www.w3.org/2000/svg" height="48" viewBox="0 -960 960 960" width="48"><path d="m611-323-43-43 114-113-114-113 43-43 113 114 113-114 43 43-114 113 114 113-43 43-113-114-113 114Zm-491-37v-240h160l200-200v640L280-360H120Zm300-288L307-540H180v120h127l113 109v-337ZM311-481Z"/></svg>

sao/images/tryton-sound-on.svg

@@ -0,0 +1 @@
+<svg xmlns="http://www.w3.org/2000/svg" height="48" viewBox="0 -960 960 960" width="48"><path d="M655-452v-60h145v60H655Zm33 292-119-88 34-47 119 88-34 47Zm-85-505-34-47 119-88 34 47-119 88ZM120-361v-240h160l200-200v640L280-361H120Zm300-288L307-541H180v120h127l113 109v-337Zm-94 168Z"/></svg>

sao/package.json

@@ -25,6 +25,7 @@
     "bower.json",
     "dist",
     "images",
+    "sounds",
     "index.html",
     "locale",
     "package.json",

sao/sounds/LICENSE

@@ -0,0 +1,395 @@
+Attribution 4.0 International
+
+=======================================================================
+
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sao/src/common.js

@@ -4344,4 +4344,10 @@
         return window.URL.createObjectURL(blob);
     };
 
+    Sao.common.play_sound = function(sound='success') {
+        var snd = new Audio('sounds/' + sound + '.wav');
+        snd.volume = localStorage.getItem('sao_sound_volume') || 0.5;
+        snd.play();
+    };
+
 }());

sao/src/model.js

@@ -1227,6 +1227,17 @@
             }
             this.autocompletion[fieldname] = result;
         },
+        on_scan_code: function(code, depends) {
+            depends = this.expr_eval(depends);
+            var values = this._get_on_change_args(depends);
+            return this.model.execute(
+                'on_scan_code', [values, code], this.get_context(),
+                true, false).then((changes) => {
+                    this.set_on_change(changes);
+                    this.set_modified();
+                    return !jQuery.isEmptyObject(changes);
+                });
+        },
         reset: function(value) {
             this.cancel();
             this.set(value, true);

sao/src/sao.less

@@ -269,6 +269,8 @@ html.accesskey {
 }
 
 .tab-form, .tab-board {
+    padding-bottom: 20px;
+
     nav.toolbar {
         position: -webkit-sticky;
         position: sticky;
@@ -1062,6 +1064,20 @@ input.column-boolean {
     }
 }
 
+.btn-code-scanner {
+    bottom: 0;
+    margin: 20px;
+    position: fixed;
+    right: 0;
+    text-align: right;
+    z-index: 1030;
+}
+
+.modal .btn-code-scanner {
+    margin: 5px;
+    position: sticky;
+}
+
 .infobar {
     line-height: @line-height-computed;
     position: fixed;

sao/src/view/form.js

@@ -290,6 +290,22 @@ function eval_pyson(value){
             if (this.attributes.creatable) {
                 this.creatable = Boolean(parseInt(this.attributes.creatable, 10));
             }
+            if (this.attributes.scan_code) {
+                this.scan_code_btn = new Sao.common.Button({
+                    'string': Sao.i18n.gettext("Scan"),
+                    'icon': 'tryton-barcode-scanner',
+                    'states': this.attributes.scan_code_states,
+                }, null, 'lg', 'btn-primary');
+                this.scan_code_btn.el.click(() => {
+                    new Sao.Window.CodeScanner(
+                        this.on_scan_code.bind(this),
+                        this.attributes.scan_code == 'loop');
+                });
+                this.el.append(jQuery('<div/>', {
+                    'class': 'btn-code-scanner',
+                }).append(this.scan_code_btn.el));
+                this.state_widgets.push(this.scan_code_btn);
+            }
         },
         get_fields: function() {
             return Object.keys(this.widgets);
@@ -309,6 +325,9 @@ function eval_pyson(value){
             var field;
             var depends;
             var promesses = [];
+            if (this.scan_code_btn) {
+                this.scan_code_btn.el.toggle(Boolean(record));
+            }
             if (record) {
                 // Force to set fields in record
                 // Get first the lazy one from the view to reduce number of requests
@@ -392,6 +411,17 @@ function eval_pyson(value){
             button.el.prop('disabled', true);  // state will be reset at display
             this.screen.button(button.attributes);
         },
+        on_scan_code: function(code) {
+            var record = this.record;
+            if (record) {
+                return record.on_scan_code(
+                    code, this.attributes.scan_code_depends || []).done(() => {
+                        this.el.parents('form').submit();
+                    });
+            } else {
+                return jQuery.when();
+            }
+        },
         get selected_records() {
             if (this.record) {
                 return [this.record];

sao/src/window.js

@@ -2577,4 +2577,137 @@
         },
     });
 
+    Sao.Window.CodeScanner = Sao.class_(Object, {
+        init: function(callback, loop=false) {
+            this.callback = callback;
+            this.loop = loop;
+            this.submitting = false;
+            this.dialog = new Sao.Dialog(
+                Sao.i18n.gettext("Code Scanner"), 'code-scanner', 'md');
+            this.el = this.dialog.modal;
+            this.input = jQuery('<input/>', {
+                'type': 'text',
+                'class': 'form-control input-sm mousetrap',
+                'aria-label': Sao.i18n.gettext("Code"),
+                'placeholder': Sao.i18n.gettext("Code"),
+            }).appendTo(jQuery('<div/>', {
+                'class': 'col-sm-12',
+            }).appendTo(this.dialog.body));
+
+            var sound_btn = jQuery('<button/>', {
+                'class': 'btn btn-default pull-right',
+                'type': 'button',
+                'title': Sao.i18n.gettext("Toggle Sound"),
+            }).prependTo(this.dialog.header);
+            var sound_icon = jQuery('<img/>', {
+                'class': 'icon',
+            }).appendTo(sound_btn);
+
+            var sound_set_state = function(state) {
+                var prm;
+                if (state) {
+                    sound_btn.addClass('active');
+                    sound_btn.attr('aria-pressed', state);
+                    prm = Sao.common.ICONFACTORY.get_icon_url('tryton-sound-on')
+                        .done(url => {
+                            sound_icon.attr('src', url);
+                        });
+                } else {
+                    sound_btn.removeClass('active');
+                    sound_btn.attr('aria-pressed', state);
+                    prm = Sao.common.ICONFACTORY.get_icon_url('tryton-sound-off')
+                        .done(url => {
+                            sound_icon.attr('src', url);
+                        });
+                }
+                localStorage.setItem('sao_code_scanner_sound', state);
+                return prm;
+            };
+            var sound_state = JSON.parse(
+                localStorage.getItem('sao_code_scanner_sound'));
+            if (sound_state === null) {
+                sound_state = true;
+            }
+            var sound_prm = sound_set_state(sound_state);
+            sound_btn.click(
+                () => sound_set_state(!sound_btn.hasClass('active')));
+
+            jQuery('<button/>', {
+                'class': 'btn btn-link',
+                'type': 'button',
+                'title': Sao.i18n.gettext("Close"),
+            }).text(' ' + Sao.i18n.gettext("Close")).prepend(
+                Sao.common.ICONFACTORY.get_icon_img('tryton-close')
+            ).click(() => {
+                this.response('RESPONSE_CLOSE');
+            }).appendTo(this.dialog.footer);
+
+            jQuery('<button/>', {
+                'class': 'btn btn-primary',
+                'type': 'submit',
+                'title': Sao.i18n.gettext("OK"),
+            }).text(' ' + Sao.i18n.gettext("OK")).prepend(
+                Sao.common.ICONFACTORY.get_icon_img('tryton-ok')
+            ).appendTo(this.dialog.footer);
+            this.dialog.content.submit(e => {
+                e.preventDefault();
+                this.response('RESPONSE_OK');
+            });
+
+            this.el.on('shown.bs.modal', () => {
+                this.input.on('blur', this._keep_focus);
+                this.input.focus();
+            });
+            this.el.on('hidden.bs.modal', function() {
+                jQuery(this).remove();
+            });
+            // show modal after sound icons have been set
+            // because they can trigger a renew session modal
+            sound_prm.then(() => this.el.modal('show'));
+        },
+        _play_sound: function(sound) {
+            if (JSON.parse(localStorage.getItem('sao_code_scanner_sound'))) {
+                Sao.common.play_sound(sound);
+            }
+        },
+        _keep_focus: function() {
+            setTimeout(() => this.focus(), 1);
+        },
+        response: function(response_id) {
+            if (this.submitting) return;
+            if (response_id == 'RESPONSE_OK') {
+                var code = this.input.val();
+                this.input.val('');  // clear input to prevent multiple calls
+                if (code) {
+                    this.submitting = true;
+                    this.input.off('blur');
+                    return this.callback(code)
+                        .always(() => this.submitting = false)
+                        .then((modified) => {
+                            this._play_sound('success');
+                            if (!this.loop || !modified) {
+                                this.destroy();
+                            }
+                            this.input.on('blur', this._keep_focus);
+                            this.input.focus();
+                        }, (error) => {
+                            this._play_sound('danger');
+                            if (error[0] == 'UserError') {
+                                Sao.common.warning.run(error[1][1], error[1][0]);
+                            } else {
+                                Sao.common.error.run(error[0], error[1]);
+                            }
+                            this.destroy();
+                        });
+                }
+            }
+            if (!this.loop || response_id != 'RESPONSE_OK') {
+                this.destroy();
+            }
+        },
+        destroy: function() {
+            this.el.modal('hide');
+        },
+    });
+
 }());

tryton/CHANGELOG

@@ -1,3 +1,4 @@
+* Support scanning code
 * Reset search offset when domain has changed
 * Add a canonicalize function for domains
 * Support PYSON comparison of timedelta

tryton/MANIFEST.in

@@ -11,4 +11,5 @@ include setup-freeze.py
 include make-*-installer.sh
 include */gtk-3.0/*
 include tryton/data/pixmaps/tryton/LICENSE
+include tryton/data/sounds/LICENSE
 graft doc

tryton/doc/usage.rst

@@ -189,6 +189,9 @@ Form:
   * Spell Checking:
     Check box to enable spell checking in fields.
 
+  * Play Sound for Code Scanner:
+    Check box to enable sound on success or failure of code scan.
+
 .. _Menu-Options-PDA-Mode:
 
 PDA Mode:

tryton/setup.py

@@ -50,6 +50,7 @@ except ImportError:
 package_data = {
     'tryton': ['data/pixmaps/tryton/*.png',
         'data/pixmaps/tryton/*.svg',
+        'data/sounds/*.wav',
         'data/locale/*/LC_MESSAGES/*.mo',
         'data/locale/*/LC_MESSAGES/*.po',
         ]
@@ -139,6 +140,7 @@ dist = setup(name=name,
         ],
     extras_require={
         'calendar': ['GooCalendar>=0.7'],
+        'sound': 'playsound',
         },
     zip_safe=False,
     **args

tryton/tryton/common/__init__.py

@@ -9,7 +9,7 @@ from .common import (
     error, file_open, file_selection, file_write, filter_domain,
     generateColorscheme, get_align, get_credentials, get_hostname, get_port,
     get_sensible_widget, get_toplevel_window, hex2rgb, highlight_rgb, humanize,
-    idle_add, mailto, message, node_attributes, open_documentation,
+    idle_add, mailto, message, node_attributes, open_documentation, play_sound,
     process_exception, resize_pixbuf, selection, setup_window, slugify, sur,
     sur_3b, timezoned_date, to_xml, untimezoned_date, url_open, userwarning,
     warning)
@@ -70,6 +70,7 @@ __all__ = [
     message,
     node_attributes,
     open_documentation,
+    play_sound,
     prepare_reference_domain,
     process_exception,
     resize_pixbuf,

tryton/tryton/common/common.py

@@ -36,7 +36,7 @@ from string import Template
 from threading import Lock, Thread
 
 import tryton.rpc as rpc
-from tryton.config import CONFIG, PIXMAPS_DIR, TRYTON_ICON
+from tryton.config import CONFIG, PIXMAPS_DIR, SOUNDS_DIR, TRYTON_ICON
 
 try:
     import ssl
@@ -1482,3 +1482,11 @@ def idle_add(func):
 def setup_window(window):
     if sys.platform == 'darwin':
         window.set_mnemonic_modifier(Gdk.ModifierType.CONTROL_MASK)
+
+
+def play_sound(self, sound='success'):
+    try:
+        from playsound import playsound
+        playsound(os.path.join(SOUNDS_DIR, f'{sound}.wav'))
+    except ImportError:
+        pass

tryton/tryton/config.py

@@ -87,6 +87,7 @@ class ConfigManager(object):
             'client.save_tree_width': True,
             'client.save_tree_state': True,
             'client.spellcheck': False,
+            'client.code_scanner_sound': True,
             'client.lang': locale.getdefaultlocale()[0],
             'client.language_direction': 'ltr',
             'client.email': '',
@@ -230,6 +231,10 @@ if not os.path.isdir(PIXMAPS_DIR):
     import pkg_resources
     PIXMAPS_DIR = pkg_resources.resource_filename(
         'tryton', 'data/pixmaps/tryton')
+SOUNDS_DIR = os.path.join(CURRENT_DIR, 'data', 'sounds')
+if not os.path.isdir(SOUNDS_DIR):
+    import pkg_resources
+    SOUNDS_DIR = pkg_resources.resource_filename('tryton', 'data/sounds')
 
 TRYTON_ICON = GdkPixbuf.Pixbuf.new_from_file(
     os.path.join(PIXMAPS_DIR, 'tryton-icon.png'))

tryton/tryton/data/pixmaps/tryton/tryton-barcode-scanner.svg

@@ -0,0 +1 @@
+<svg xmlns="http://www.w3.org/2000/svg" height="48" viewBox="0 96 960 960" width="48"><path d="M40 936V754h60v122h122v60H40Zm697 0v-60h122V754h60v182H737ZM153 825V326h80v499h-80Zm121 0V326h42v499h-42Zm122 0V326h83v499h-83Zm125 0V326h121v499H521Zm163 0V326h42v499h-42Zm83 0V326h38v499h-38ZM40 398V216h182v60H100v122H40Zm819 0V276H737v-60h182v182h-60Z"/></svg>

tryton/tryton/data/pixmaps/tryton/tryton-sound-off.svg

@@ -0,0 +1 @@
+<svg xmlns="http://www.w3.org/2000/svg" height="48" viewBox="0 -960 960 960" width="48"><path d="m611-323-43-43 114-113-114-113 43-43 113 114 113-114 43 43-114 113 114 113-43 43-113-114-113 114Zm-491-37v-240h160l200-200v640L280-360H120Zm300-288L307-540H180v120h127l113 109v-337ZM311-481Z"/></svg>

tryton/tryton/data/pixmaps/tryton/tryton-sound-on.svg

@@ -0,0 +1 @@
+<svg xmlns="http://www.w3.org/2000/svg" height="48" viewBox="0 -960 960 960" width="48"><path d="M655-452v-60h145v60H655Zm33 292-119-88 34-47 119 88-34 47Zm-85-505-34-47 119-88 34 47-119 88ZM120-361v-240h160l200-200v640L280-361H120Zm300-288L307-541H180v120h127l113 109v-337Zm-94 168Z"/></svg>

tryton/tryton/data/sounds/LICENSE

@@ -0,0 +1,395 @@
+Attribution 4.0 International
+
+=======================================================================
+
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+does not provide legal services or legal advice. Distribution of
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tryton/tryton/gui/main.py

@@ -79,6 +79,7 @@ class Main(Gtk.Application):
                 ('mode-pda', 'client.modepda'),
                 ('save-tree-width', 'client.save_tree_width'),
                 ('save-tree-state', 'client.save_tree_state'),
+                ('code-scanner-sound', 'client.code_scanner_sound'),
                 ('spell-checking', 'client.spellcheck'),
                 ('check-version', 'client.check_version'),
                 ]:
@@ -307,6 +308,7 @@ class Main(Gtk.Application):
         form.append(_("Save Column Width"), 'app.save-tree-width')
         form.append(_("Save Tree State"), 'app.save-tree-state')
         form.append(_("Spell Checking"), 'app.spell-checking')
+        form.append(_("Play Sound for Code Scanner"), 'app.code-scanner-sound')
 
         section.append(_("PDA Mode"), 'app.mode-pda')
         section.append(_("Search Limit..."), 'app.search-limit')

tryton/tryton/gui/window/code_scanner.py

@@ -0,0 +1,102 @@
+# This file is part of Tryton.  The COPYRIGHT file at the top level of
+# this repository contains the full copyright notices and license terms.
+
+import gettext
+
+try:
+    from http import HTTPStatus
+except ImportError:
+    from http import client as HTTPStatus
+
+from gi.repository import Gtk
+
+from tryton.common import (
+    IconFactory, RPCException, play_sound, process_exception)
+from tryton.common.underline import set_underline
+from tryton.config import CONFIG, TRYTON_ICON
+from tryton.exceptions import TrytonServerError
+from tryton.gui import Main
+from tryton.gui.window.nomodal import NoModal
+
+_ = gettext.gettext
+
+
+class CodeScanner(NoModal):
+
+    def __init__(self, callback, loop=False):
+        super().__init__()
+        self.callback = callback
+        self.loop = loop
+        self.dialog = Gtk.MessageDialog(
+            transient_for=self.parent, destroy_with_parent=True,
+            text=_("Code Scanner"))
+        Main().add_window(self.dialog)
+        self.dialog.set_position(Gtk.WindowPosition.CENTER_ON_PARENT)
+        self.dialog.set_icon(TRYTON_ICON)
+        self.dialog.connect('response', self.response)
+
+        self.dialog.set_title(_("Code Scanner"))
+
+        self.entry = Gtk.Entry()
+        self.entry.set_activates_default(True)
+        self.entry.set_placeholder_text(_("Code"))
+        self.dialog.get_message_area().pack_start(
+            self.entry, expand=False, fill=False, padding=9)
+
+        button_close = self.dialog.add_button(
+            set_underline(_("Close")), Gtk.ResponseType.CLOSE)
+        button_close.set_image(IconFactory.get_image(
+                'tryton-close', Gtk.IconSize.BUTTON))
+
+        button_ok = self.dialog.add_button(
+            set_underline(_("OK")), Gtk.ResponseType.OK)
+        button_ok.set_image(IconFactory.get_image(
+                'tryton-ok', Gtk.IconSize.BUTTON))
+        self.dialog.set_default_response(Gtk.ResponseType.OK)
+
+        self.dialog.show_all()
+        self.register()
+        self.entry.grab_focus()
+
+    def _play(self, sound):
+        if CONFIG['client.code_scanner_sound']:
+            play_sound(sound)
+
+    def response(self, dialog, response):
+        if response == Gtk.ResponseType.OK:
+            code = self.entry.get_text()
+            self.entry.set_text('')
+            if code:
+                while True:
+                    try:
+                        modified = self.callback(code)
+                        self._play('success')
+                        if not self.loop or not modified:
+                            self.destroy()
+                    except Exception as exception:
+                        unauthorized = (
+                            isinstance(exception, TrytonServerError)
+                            and exception.faultCode == str(
+                                int(HTTPStatus.UNAUTHORIZED)))
+                        if not unauthorized:
+                            self._play('danger')
+                        try:
+                            process_exception(exception)
+                        except RPCException:
+                            pass
+                        if unauthorized:
+                            continue
+                        self.destroy()
+                    return
+        if not self.loop or response != Gtk.ResponseType.OK:
+            self.destroy()
+
+    def destroy(self):
+        super().destroy()
+        self.dialog.destroy()
+
+    def show(self):
+        self.dialog.show()
+
+    def hide(self):
+        self.dialog.hide()

tryton/tryton/gui/window/view_form/model/record.py

@@ -676,6 +676,16 @@ class Record:
             res = []
         self.autocompletion[fieldname] = res
 
+    def on_scan_code(self, code, depends):
+        depends = self.expr_eval(depends)
+        values = self._get_on_change_args(depends)
+        changes = RPCExecute(
+            'model', self.model_name, 'on_scan_code', values, code,
+            context=self.get_context(), process_exception=False)
+        self.set_on_change(changes)
+        self.set_modified()
+        return bool(changes)
+
     def set_field_context(self):
         from .group import Group
         for name, field in self.group.fields.items():

tryton/tryton/gui/window/view_form/view/form.py

@@ -3,7 +3,7 @@
 import gettext
 import operator
 
-from gi.repository import Gtk
+from gi.repository import GLib, Gtk
 
 from tryton.common import IconFactory, Tooltips, get_align, node_attributes
 from tryton.common.button import Button
@@ -12,6 +12,7 @@ from tryton.common.focus import (
     get_invisible_ancestor, next_focus_widget)
 from tryton.common.underline import set_underline
 from tryton.config import CONFIG
+from tryton.gui.window.code_scanner import CodeScanner
 
 from . import View, XMLViewParser
 from .form_gtk.binary import Binary
@@ -471,6 +472,23 @@ class ViewForm(View):
 
         self.creatable = bool(int(self.attributes.get('creatable', 1)))
 
+        if self.attributes.get('scan_code'):
+            code_scanner_btn = Button({
+                    'string': _("Scan"),
+                    'icon': 'tryton-barcode-scanner',
+                    'states': self.attributes.get('scan_code_states', {}),
+                    })
+            code_scanner_btn.set_image(IconFactory.get_image(
+                    'tryton-barcode-scanner', Gtk.IconSize.BUTTON))
+            code_scanner_btn.set_always_show_image(True)
+            code_scanner_btn.set_receives_default(False)
+            vbox.pack_start(
+                code_scanner_btn, expand=False, fill=True, padding=2)
+            code_scanner_btn.connect(
+                'clicked', lambda *a: CodeScanner(
+                    self.on_scan_code,
+                    self.attributes['scan_code'] == 'loop'))
+
     def get_fields(self):
         return list(self.widgets.keys())
 
@@ -598,3 +616,13 @@ class ViewForm(View):
             self.screen.button(widget.attrs)
         finally:
             widget.handler_unblock_by_func(self.button_clicked)
+
+    def on_scan_code(self, code):
+        if self.record:
+            modified = self.record.on_scan_code(
+                code, self.attributes.get('scan_code_depends', []))
+            if self.attributes['scan_code'] == 'submit':
+                window = self.widget.get_toplevel()
+                if window and isinstance(window, Gtk.Window):
+                    GLib.idle_add(lambda: window and window.activate_default())
+            return modified

trytond/CHANGELOG

@@ -1,3 +1,4 @@
+* Add on_scan_code method on Model
 * Support add/update/remove/delete for on_change_with of xxx2Many
 * Add decorator on RPC
 * Remove translations with empty source

trytond/doc/ref/models.rst

@@ -230,6 +230,15 @@ Instance methods:
       To be called by the client, this method must be decorated
       by :meth:`~trytond.model.fields.depends` with the fields needed.
 
+.. method:: ModelView.on_scan_code(code)
+
+   Modify the instance when ``code`` is scanned.
+   If the instance is not modified the scan loop ends.
+
+   .. note::
+      When extended, this method must be decorated by
+      :meth:`~trytond.model.fields.depends` with the fields used.
+
 ModelStorage
 ============
 

trytond/doc/topics/views/index.rst

@@ -258,6 +258,15 @@ Each form view must start with this tag with those attributes:
 ``cursor``
    The name of the field that must have the cursor by default.
 
+.. _form-attributes-scan_code:
+
+``scan_code``
+  Active the scan of code using :meth:`trytond.model.ModelView.on_scan_code`.
+  If the value is ``one``, only one code is requested.
+  If the value is ``submit``, the form is submitted after one code.
+  If the value is ``loop``, codes are requested until the user stops.
+  The default value is empty.
+
 :ref:`col <common-attributes-col>`.
 
 .. _form-label:

trytond/trytond/ir/ui/form.rnc

@@ -20,6 +20,9 @@ attlist.form &=
   [ a:defaultValue = "1" ] attribute creatable { "0" | "1" }?
 attlist.form &= [ a:defaultValue = "4" ] attribute col { text }?
 attlist.form &= attribute cursor { text }?
+attlist.form &= attribute scan_code { "one" | "submit" | "loop" }?
+attlist.form &= attribute scan_code_depends { text }?
+attlist.form &= attribute scan_code_states { text }?
 
 label = element label { attlist.label, empty }
 attlist.label &= [ a:defaultValue = "" ] attribute string { text }?

trytond/trytond/ir/ui/form.rng

@@ -57,6 +57,34 @@
       </attribute>
     </optional>
   </define>
+  <define name="attlist.form" combine="interleave">
+    <optional>
+      <attribute>
+        <name ns="">scan_code</name>
+        <choice>
+          <value>one</value>
+          <value>submit</value>
+          <value>loop</value>
+        </choice>
+      </attribute>
+    </optional>
+  </define>
+  <define name="attlist.form" combine="interleave">
+    <optional>
+      <attribute>
+        <name ns="">scan_code_depends</name>
+        <text/>
+      </attribute>
+    </optional>
+  </define>
+  <define name="attlist.form" combine="interleave">
+    <optional>
+      <attribute>
+        <name ns="">scan_code_states</name>
+        <text/>
+      </attribute>
+    </optional>
+  </define>
   <define name="label">
     <element>
       <name ns="">label</name>

trytond/trytond/ir/ui/menu.py

@@ -25,6 +25,7 @@ CLIENT_ICONS = [(x, x) for x in [
         'tryton-archive',
         'tryton-attach',
         'tryton-back',
+        'tryton-barcode-scanner',
         'tryton-bookmark-border',
         'tryton-bookmark',
         'tryton-bookmarks',
@@ -65,6 +66,8 @@ CLIENT_ICONS = [(x, x) for x in [
         'tryton-remove',
         'tryton-save',
         'tryton-search',
+        'tryton-sound-off',
+        'tryton-sound-on',
         'tryton-star-border',
         'tryton-star',
         'tryton-switch',

trytond/trytond/model/modelview.py

@@ -72,6 +72,8 @@ class ModelView(Model):
         cls.__rpc__['on_change_with'] = RPC(
             instantiate=0, result=on_change_result)
         cls.__rpc__['on_change_notify'] = RPC(instantiate=0)
+        cls.__rpc__['on_scan_code'] = RPC(
+            instantiate=0, result=on_change_result)
         cls._buttons = {}
 
         fields_ = {}
@@ -187,20 +189,28 @@ class ModelView(Model):
                     methods['depend_methods'][meth_name] - meth_done)
                 meth_done.add(meth_name)
 
-        set_methods('on_change_notify')
+        for func_name, depends_attr in [
-        cls._on_change_notify_depends = methods['depends']['on_change_notify']
+                ('on_change_notify', '_on_change_notify_depends'),
-        meth_names = list(methods['depend_methods']['on_change_notify'])
+                ('on_scan_code', '_on_scan_code_depends'),
-        meth_done = set()
+                ]:
-        while meth_names:
+            set_methods(func_name)
-            meth_name = meth_names.pop()
+            setattr(cls, depends_attr, methods['depends'][func_name])
-            method = getattr(cls, meth_name)
+            meth_names = list(methods['depend_methods'][func_name])
-            assert callable(method) or isinstance(method, property), \
+            meth_done = set()
-                "%s.%s not callable or property" % (cls, meth_name)
+            while meth_names:
-            set_methods(meth_name)
+                meth_name = meth_names.pop()
-            cls._on_change_notify_depends |= methods['depends'][meth_name]
+                method = getattr(cls, meth_name)
-            meth_names += list(
+                assert callable(method) or isinstance(method, property), \
-                methods['depend_methods'][meth_name] - meth_done)
+                    "%s.%s not callable or property" % (cls, meth_name)
-            meth_done.add(meth_name)
+                set_methods(meth_name)
+                setattr(
+                    cls, depends_attr,
+                    getattr(cls, depends_attr) | methods['depends'][meth_name])
+                meth_names += list(
+                    methods['depend_methods'][meth_name] - meth_done)
+                meth_done.add(meth_name)
+
+        cls.on_scan_code = on_change(cls.on_scan_code)
 
     @classmethod
     def fields_view_get(cls, view_id=None, view_type='form', level=None):
@@ -650,6 +660,10 @@ class ModelView(Model):
             else:
                 element.attrib['id'] = str(action.action.id)
 
+        if element.tag == 'form' and element.get('scan_code'):
+            element.set('scan_code_depends', encoder.encode(
+                    list(cls._on_scan_code_depends)))
+
         if element.tag == 'tree' and element.get('sequence'):
             fields_attrs.setdefault(element.get('sequence'), {})
 
@@ -779,6 +793,9 @@ class ModelView(Model):
         """
         return []
 
+    def on_scan_code(self, code):
+        pass
+
     @property
     def _changed_values(self):
         """Return the values changed since the instantiation.