hestiacp/web/js/pages/edit_package.js

App.Actions.PACKAGE.enable_unlimited = function (elm, source_elm) {
	$(elm).data('checked', true);
	$(elm).data('prev_value', $(elm).val()); // save prev value in order to restore if needed
	$(elm).val(App.Constants.UNLIM_TRANSLATED_VALUE);
	$(elm).attr('disabled', true);
	$(source_elm).css('opacity', '1');
};

App.Actions.PACKAGE.disable_unlimited = function (elm, source_elm) {
	$(elm).data('checked', false);
	if ($(elm).data('prev_value') && $(elm).data('prev_value').trim() != '') {
		var prev_value = $(elm).data('prev_value').trim();
		$(elm).val(prev_value);
		if (App.Helpers.isUnlimitedValue(prev_value)) {
			$(elm).val('0');
		}
	} else {
		if (App.Helpers.isUnlimitedValue($(elm).val())) {
			$(elm).val('0');
		}
	}
	$(elm).attr('disabled', false);
	$(source_elm).css('opacity', '0.5');
};

//
App.Actions.PACKAGE.toggle_unlimited_feature = function (evt) {
	var elm = $(evt.target);
	var ref = elm.prev('.form-control');
	if (!$(ref).data('checked')) {
		App.Actions.PACKAGE.enable_unlimited(ref, elm);
	} else {
		App.Actions.PACKAGE.disable_unlimited(ref, elm);
	}
};

App.Listeners.PACKAGE.checkbox_unlimited_feature = function () {
	$('.unlim-trigger').on('click', App.Actions.PACKAGE.toggle_unlimited_feature);
};

App.Listeners.PACKAGE.init = function () {
	$('.unlim-trigger').each(function (i, elm) {
		var ref = $(elm).prev('.form-control');
		if (App.Helpers.isUnlimitedValue($(ref).val())) {
			App.Actions.PACKAGE.enable_unlimited(ref, elm);
		} else {
			$(ref).data('prev_value', $(ref).val());
			App.Actions.PACKAGE.disable_unlimited(ref, elm);
		}
	});
};

App.Helpers.isUnlimitedValue = function (value) {
	var value = value.trim();
	if (value == App.Constants.UNLIM_VALUE || value == App.Constants.UNLIM_TRANSLATED_VALUE) {
		return true;
	}

	return false;
};

//
// Page entry point
// Trigger listeners
App.Listeners.PACKAGE.init();
App.Listeners.PACKAGE.checkbox_unlimited_feature();
$('form[name="v_edit_package"]').on('submit', function (evt) {
	$('input:disabled').each(function (i, elm) {
		$(elm).attr('disabled', false);
		if (App.Helpers.isUnlimitedValue($(elm).val())) {
			$(elm).val(App.Constants.UNLIM_VALUE);
		}
	});
});

$(document).ready(function () {
	$('.js-add-ns-button').click(function () {
		var n = $('input[name^=v_ns]').length;
		if (n < 8) {
			var t = $($('input[name=v_ns1]').parents('div')[0]).clone(true, true);
			t.find('input').attr({ value: '', name: 'v_ns' + (n + 1) });
			t.find('span').show();
			$('.js-add-ns').before(t);
		}
		if (n == 7) {
			$('.js-add-ns').addClass('u-hidden');
		}
	});

	$('.js-remove-ns').click(function () {
		$(this).parents('div')[0].remove();
		$('input[name^=v_ns]').each(function (i, ns) {
			$(ns).attr({ name: 'v_ns' + (i + 1) });
			i < 2 ? $(ns).parent().find('span').hide() : $(ns).parent().find('span').show();
		});
		$('.js-add-ns').removeClass('u-hidden');
	});

	$('input[name^=v_ns]').each(function (i, ns) {
		i < 2 ? $(ns).parent().find('span').hide() : $(ns).parent().find('span').show();
	});
});