pos_multi_currency/static/src/xml/pos.xml

<?xml version="1.0" encoding="utf-8"?>
<templates>
	<t t-extend="PaymentScreenWidget">
		<t t-jquery=".payment-due-total" t-operation="after">
			<t t-if="widget.pos.config.multi_currency_enable">
				<div>
					<div class="onoffswitch" style="float:left">
					    <input type="checkbox" name="toggle_multi_currency" class="onoffswitch-checkbox" id="toggle_multi_currency" />
					    <label class="onoffswitch-label" for="toggle_multi_currency">
					        <span class="onoffswitch-inner"></span>
					        <span class="onoffswitch-switch"></span>
					    </label>
					</div>
					<div style="padding:5px;text-align:right !important;float:left">
						<span> Moneda Extranjera</span>
					</div>
				</div>
				<br/><br/>
				<div id="multi_currency" style="display:none;border:1px solid lightgrey;">
					
					<div class="foreign_infoline">
						<label class="left-block" id="currency_selection_label" 
									for="currency_selection">Moneda: </label>
						
						<t t-set="selected_curr" t-value="widget.get_currency_selection()" />
						<select style="height:30px;width:50%;" 
								class="right-block" id="currency_selection">
						    <t t-foreach="widget.pos.currency_list" t-as="currencylist">
						    	<t t-if="selected_curr==currencylist.id">
							        <option selected="selected" t-att-value="currencylist.id">
							        	<b><t t-esc="currencylist.name"/></b>
						        	</option>
					        	</t>
					        	<t t-if="selected_curr!=currencylist.id">
							        <option t-att-value="currencylist.id">
							        	<b><t t-esc="currencylist.name"/></b>
						        	</option>
					        	</t>
						    </t>
						</select>
					</div>
					<t t-if="widget.pos.config.display_conversion">
						<div class="foreign_infoline" style="text-align:center;font-weight:bold"
							 id="conversion_rate">
						 </div>
					 </t>
					<div class="foreign_infoline">
						<span class="left-block" id="currency_value_label"></span>
						<span id="currency_value" class="right-block"></span>
					</div>
					<div class="foreign_infoline">
						<span id="foreign_input_label" class="left-block"></span>
						<input placeholder="Ingresar Valor" 
								class="paymentline-input-foreign right-block" 
								id="curr_input" type="number" step="0.01" pattern="!/^([0-9])*$/" min="0.0"></input>
								<!-- Expresion regular orginal -->
								<!-- [0-9]+([\.][0-9]+)? -->
								<!-- Nueva expresion regular -->
								<!-- !/^([0-9])*$/ -->
					</div>
				</div>
				<br/>
			</t>
		</t>
		<t t-jquery=".infoline.bigger" t-operation="after">
			<t t-if="widget.pos.config.multi_currency_enable">
				<div class="infoline bigger" id="foreign_change_div" style="display:none">
	               <span class='left-block' id="foreign_change_label">
	               </span>
	               <span class="right-block" id="foreign_change_value"></span>
	           </div>
           </t>
		</t>
	</t>
</templates>