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feat: let customers remove items and empty the cart, with undo
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Each cart item has a visible "Remover" button instead of a faint ×, and
carts with two or more items get "Esvaziar carrinho". Both show a
"Desfazer" notice for 8 seconds, so a wrong click costs nothing. The
browser test covers remove and undo.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
This commit is contained in:
Cauê Faleiros
2026-09-24 18:18:10 -03:00
parent cbbbdb351a
commit b6a90411f1
4 changed files with 45 additions and 4 deletions
Download Patch File Download Diff File Expand all files Collapse all files

24
web/site-cart.js
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@@ -30,10 +30,15 @@ function pintaPedido(){
$('itens').innerHTML = pedido.map((it,i)=>
'<div class="item"><div class="nm2"><b>'+escapeHTML(it.tit)+'</b><span>'+escapeHTML(it.desc)+'</span></div>'+
'<div class="vl2">'+rs(it.total)+'</div>'+
'<button class="x" data-rmi="'+i+'" aria-label="Remover">×</button></div>').join('');
'<button type="button" class="x" data-rmi="'+i+'" aria-label="Remover '+escapeHTML(it.tit)+'">Remover</button></div>').join('');
$('itens').querySelectorAll('[data-rmi]').forEach(b=>b.addEventListener('click',()=>{
pedido.splice(+b.dataset.rmi,1); pintaPedido();
const i=+b.dataset.rmi, [item]=pedido.splice(i,1);
pintaPedido();
avisaDesfazer(item.tit+' saiu do carrinho.',()=>{
pedido.splice(Math.min(i,pedido.length),0,item); pintaPedido();
});
}));
$('bEsvaziar').hidden = pedido.length+(itemAtual?1:0) < 2;
const itens = pedido.reduce((t,it)=>t+it.total,0) + (itemAtual? itemAtual.total : 0);
const frete = entrega.tipo==='frete' && entrega.cotado ? entrega.valor : 0;
const soma = itens + frete;
@@ -118,4 +123,19 @@ function carrinho(){
'o metro cai para '+rs(piso)+' — são '+rs(ganho)+' a menos neste pedido.','var(--verde)');
}
}
// Removing is one click, and a wrong click is undone from the notice that follows.
let desfazerAcao=null, desfazerTimer=null;
function avisaDesfazer(texto,acao){
desfazerAcao=acao; clearTimeout(desfazerTimer);
$('desfazerTxt').textContent=texto; $('desfazer').hidden=false;
desfazerTimer=setTimeout(fechaDesfazer,8000);
}
function fechaDesfazer(){ clearTimeout(desfazerTimer); desfazerAcao=null; $('desfazer').hidden=true; }
addEventListener('dtf-page-changed',fechaDesfazer);
$('desfazerBtn').addEventListener('click',()=>{ const acao=desfazerAcao; fechaDesfazer(); if(acao) acao(); });
$('bEsvaziar').addEventListener('click',()=>{
const antes=pedido.slice();
pedido=[]; invalidaItemAtual(); pintaPedido();
avisaDesfazer('Carrinho esvaziado.',()=>{ pedido=antes; pintaPedido(); });
});
function qm(t,c){ const m=$('qmsg'); m.style.display='block'; m.style.color=c||'var(--verde)'; m.innerHTML=t; }