options.js


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function saveOptions() {
	let timefmt;
	if (document.getElementById('t24').checked)
		timefmt = 24;
	else if (document.getElementById('t12').checked)
		timefmt = 12;
	localStorage['timefmt'] = timefmt;

	localStorage['fg'] = document.getElementById('fg').value;
	localStorage['fg_date'] = document.getElementById('fg_date').value;
	localStorage['bg'] = document.getElementById('bg').value;

	let status = document.getElementById('status');
	status.textContent = 'Options saved';
	setTimeout(function() { status.textContent = '' }, 2000);
}

function restoreOptions() {
	// default to 24 for both unset and invalid
	let val = localStorage['timefmt'] || 24;
	let btn = document.getElementById('t' + val) ||
		document.getElementById('t24');
	btn.checked = true;

	if ((val = localStorage['fg']))
		document.getElementById('fg').value = val;
	if ((val = localStorage['fg_date']))
		document.getElementById('fg_date').value = val;
	if ((val = localStorage['bg']))
		document.getElementById('bg').value = val;
}

function startOptions() {
	restoreOptions();

	document.getElementById('save').addEventListener('click', saveOptions);
}

window.onload = startOptions;