Re: Won't work.
"YYYep, that worked out real well."
That's certainly how most protectionist policies pan out. But there's a subtle difference here, in that China has an under-valued fixed exchange rate, enabling it to under-cut competitors, and to an extent justifying duties (that mostly aren't levied) on everything they produce and sell to developed economies. Unfortunately Indonesia isn't part of the developed world with its over- or fairly-valued currencies, and the Indonesian Rupiah is by any sensible measure (eg the Economist Big Mac index) undervalued by even more than China's.
What this means is that Indonesia is saying "our economy is uncompetitive even with a currency undervalued against China's, but rather than address the causes of our uncompetitiveness, we'll make imports more expensive". Invariably, as with your example, the sheltered industry and government will see this a reason not to improve, and all that happens is consumers pay more, but ultimately the protected industry withers and dies.
Interestingly the bottom of the league table of relative mis-valuations of currency is occupied by India. It doesn't look to me that under-valuing their currency and protecting domestic industry has given India a vibrant tech hardware and mobile phone sector, given the ongoing disputes between the state and the Nokia plant, and the complete absence of Indian handset exports.