[ADD] pos_keyboard module from https://github.com/yelizariev/pos-addons

pos_keyboard/README.rst

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+Keyboard support in Point Of Sale
+================================================================
+Module allows to use usual keyboard (not virtual one) in Point of Sale.
+
+Usage:
+------
+Using keys below switch to mode you need. Qty mode is used by default.
+Then use number keys to enter quantity, price or discount.
+
+
+=========== ===================== =================
+Type        Numpad                Extra keys  
+=========== ===================== =================
+mode qty    ``/``                 ``q``
+----------- --------------------- -----------------
+mode disc   ``-``                 ``d``
+----------- --------------------- -----------------
+mode price  ``*``                 ``p``
+----------- --------------------- -----------------
++/-         ``+``                 ``s``
+=========== ===================== =================
+
+
+Tested on Odoo 9.0 2ec9a9c99294761e56382bdcd766e90b8bc1bb38

pos_keyboard/__init__.py

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+# -*- coding: utf-8 -*-

pos_keyboard/__openerp__.py

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+# -*- coding: utf-8 -*-
+{
+    'name': "Keyboard support in Point Of Sale",
+    'author': "IT-Projects LLC, Ivan Yelizariev",
+    'summary': 'Module allows to use usual keyboard (not virtual one) in Point of Sale',
+    "website": "https://it-projects.info",
+    'images': ['images/keyboard.png'],
+    'category': 'Point Of Sale',
+    'license': 'LGPL-3',
+    'version': '1.0.2',
+    'depends': ['point_of_sale'],
+    'data': [
+         'data.xml',
+    ],
+    'installable': True,
+    'auto_install': False,
+}

pos_keyboard/data.xml

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+<?xml version="1.0" encoding="utf-8"?>
+<openerp>
+    <data>
+
+        <template id="assets" inherit_id="point_of_sale.assets">
+            <xpath expr="." position="inside">
+                <script type="text/javascript" src="/pos_keyboard/static/src/js/pos.js"></script>
+            </xpath>
+        </template>
+        
+    </data>
+</openerp>

pos_keyboard/doc/changelog.rst

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+.. _changelog:
+
+Changelog
+=========
+
+`1.0.2`
+-------
+
+- Fix bug: Repeat last keystroke when press non-number key or non-shortcut key after keypress on the number or shortcut key (i.e. q15jj ended up as quantity 1555)
+
+`1.0.1`
+-------
+
+- Fix barcode scanner bug

pos_keyboard/static/src/js/pos.js

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+odoo.define('pos_keyboard.pos', function (require) {
+    "use strict";
+
+    var core = require('web.core');
+    var models = require('point_of_sale.models');
+    var screens = require('point_of_sale.screens');
+
+    var _super_posmodel = models.PosModel.prototype;
+    models.PosModel = models.PosModel.extend({
+        initialize: function (session, attributes) {
+            this.keypad = new Keypad({'pos': this});
+            return _super_posmodel.initialize.call(this, session, attributes);
+        }
+    });
+
+    screens.NumpadWidget.include({
+        start: function() {
+            this._super();
+            var self = this;
+            this.pos.keypad.set_action_callback(function(data){
+                 self.keypad_action(data, self.pos.keypad.type);
+            });
+        },
+        keypad_action: function(data, type){
+             if (data.type === type.numchar){
+                 this.state.appendNewChar(data.val);
+             }
+             else if (data.type === type.bmode) {
+                 this.state.changeMode(data.val);
+             }
+             else if (data.type === type.sign){
+                 this.clickSwitchSign();
+             }
+             else if (data.type === type.backspace){
+                 this.clickDeleteLastChar();
+             }
+        }
+    });
+    
+    screens.PaymentScreenWidget.include({
+        show: function(){
+            this._super();
+            this.pos.keypad.disconnect();
+        },
+        hide: function(){
+            this._super();
+            this.pos.keypad.connect();
+        }
+    });
+    
+    // this module mimics a keypad-only cash register. Use connect() and 
+    // disconnect() to activate and deactivate it.
+    var Keypad = core.Class.extend({
+        init: function(attributes){
+            this.pos = attributes.pos;
+            /*this.pos_widget = this.pos.pos_widget;*/
+            this.type = {
+                numchar: 'number, dot',
+                bmode: 'quantity, discount, price',
+                sign: '+, -',
+                backspace: 'backspace'
+            };
+            this.data = {
+                type: undefined,
+                val: undefined
+            };
+            this.action_callback = undefined;
+        },
+
+        save_callback: function(){
+            this.saved_callback_stack.push(this.action_callback);
+        },
+
+        restore_callback: function(){
+            if (this.saved_callback_stack.length > 0) {
+                this.action_callback = this.saved_callback_stack.pop();
+            }
+        },
+
+        set_action_callback: function(callback){
+            this.action_callback = callback
+        },
+
+        //remove action callback
+        reset_action_callback: function(){
+            this.action_callback = undefined;
+        },
+
+        // starts catching keyboard events and tries to interpret keystrokes,
+        // calling the callback when needed.
+        connect: function(){
+            var self = this;
+            // --- additional keyboard ---//
+            var KC_PLU = 107;      // KeyCode: + or - (Keypad '+')
+            var KC_QTY = 111;      // KeyCode: Quantity (Keypad '/')
+            var KC_AMT = 106;      // KeyCode: Price (Keypad '*')
+            var KC_DISC = 109;     // KeyCode: Discount Percentage [0..100] (Keypad '-')
+            // --- basic keyboard --- //
+            var KC_PLU_1 = 83;    // KeyCode: sign + or - (Keypad 's')
+            var KC_QTY_1 = 81;     // KeyCode: Quantity (Keypad 'q')
+            var KC_AMT_1 = 80;     // KeyCode: Price (Keypad 'p')
+            var KC_DISC_1 = 68;    // KeyCode: Discount Percentage [0..100] (Keypad 'd')
+
+            var KC_BACKSPACE = 8;  // KeyCode: Backspace (Keypad 'backspace')       
+            var kc_lookup = {
+                48: '0', 49: '1', 50: '2',  51: '3', 52: '4',
+                53: '5', 54: '6', 55: '7', 56: '8', 57: '9',
+                80: 'p', 83: 's', 68: 'd', 190: '.', 81: 'q',
+                96: '0', 97: '1', 98: '2',  99: '3', 100: '4',
+                101: '5', 102: '6', 103: '7', 104: '8', 105: '9',
+                106: '*', 107: '+', 109: '-', 110: '.', 111: '/'
+            };
+
+            //usb keyboard keyup event
+            var rx = /INPUT|SELECT|TEXTAREA/i;
+            var ok = false;
+            var timeStamp = 0;
+            $('body').on('keyup', '', function (e){
+                var statusHandler  =  !rx.test(e.target.tagName)  ||
+                    e.target.disabled || e.target.readOnly;
+                if (statusHandler){
+                    var is_number = false;
+                    var type = self.type;
+                    var buttonMode = {
+                        qty: 'quantity',
+                        disc: 'discount',
+                        price: 'price'
+                    };
+                    var token = e.keyCode;
+                    if ((token >= 96 && token <= 105 || token == 110) ||
+                        (token >= 48 && token <= 57 || token == 190)) {
+                        self.data.type = type.numchar;
+                        self.data.val = kc_lookup[token];
+                        is_number = true;
+                        ok = true;
+                    }
+                    else if (token == KC_PLU || token == KC_PLU_1) {
+                        self.data.type = type.sign;
+                        ok = true;
+                    }
+                    else if (token == KC_QTY || token == KC_QTY_1) {
+                        self.data.type = type.bmode;
+                        self.data.val = buttonMode.qty;
+                        ok = true;
+                    }
+                    else if (token == KC_AMT || token == KC_AMT_1) {
+                        self.data.type = type.bmode;
+                        self.data.val = buttonMode.price;
+                        ok = true;
+                    }
+                    else if (token == KC_DISC || token == KC_DISC_1) {
+                        self.data.type = type.bmode;
+                        self.data.val = buttonMode.disc;
+                        ok = true;
+                    }
+                    else if (token == KC_BACKSPACE) {
+                        self.data.type = type.backspace;
+                        ok = true;
+                    } 
+                    else {
+                        self.data.type = undefined;
+                        self.data.val = undefined;
+                        ok = false;
+                    } 
+
+                    if (is_number) {
+                        if (timeStamp + 50 > new Date().getTime()) {
+                            ok = false;
+                        }
+                    }
+
+                    timeStamp = new Date().getTime();
+
+                    setTimeout(function(){
+                        if (ok) {self.action_callback(self.data);}
+                    }, 50);
+                }
+            });
+        },
+
+        // stops catching keyboard events 
+        disconnect: function(){
+            $('body').off('keyup', '')
+        }
+    });
+    
+    return {
+        Keypad: Keypad
+    };
+});