website/www/conservancy/static/js/supporter-page.js
Brett Smith 7202787092 supporter: Reorganize form post-input notes.
This makes it easier to keep baseline alignment between labels and their
respective inputs.  Declaring `margin-left: 51%;` for the post-input notes
is not exactly what we want, but it's much closer and less troublesome than
dealing with the vertical alignment of labels otherwise.
2017-01-09 16:56:42 -05:00

116 lines
4.3 KiB
JavaScript

/* Copyright (C) 2012-2013 Denver Gingerich,
** Copyright (C) 2013-2014 Bradley M. Kuhn,
** Copyright (C) 2016 Brett Smith.
** License: GPLv3-or-later
** Find a copy of GPL at https://sfconservancy.org/GPLv3
*/
var NEW_AMOUNT_EVENT = 'conservancy:newamount';
var flipClass = function(elem, byeClass, hiClass) {
var classList = elem.classList;
classList.remove(byeClass);
classList.add(hiClass);
}
var buildAmountData = function(amountInput) {
var amountData = {
minAmount: parseFloat(amountInput.min),
newAmount: parseFloat(amountInput.value),
}
if (amountInput.dataset.oldAmount !== undefined) {
amountData.oldAmount = parseFloat(amountInput.dataset.oldAmount);
}
return amountData;
}
var supportTypeSelector = function(supportTypeHash) {
return $(supportTypeHash + "Selector");
};
var $window = $(window);
$window.load(function() {
/* We've sometimes published links that say #renew instead of #renewal.
Rewrite that to work as intended. */
if (window.location.hash === "#renew") {
window.location.hash = "#renewal";
}
var $selectorLink = supportTypeSelector(window.location.hash);
if ($selectorLink.length > 0) {
$window.scrollTop($selectorLink.offset().top);
}
});
$(document).ready(function() {
// Forms start in "invalid" form, with the errors shown, so that
// non-Javascript users see the errors by default and know what they must
// enter. Now we hide those for JavaScript users:
var $formCorrectionNeeded = $('#form-correction-needed');
$formCorrectionNeeded.addClass('hidden');
$('form.supporter-form').each(function(index, form) {
var $amountInput = $('input[type=number]', form).first();
var $amountError = $('.form-error', $amountInput.parents('.supporter-form-input'));
$amountError.on(NEW_AMOUNT_EVENT, function(event, amountData) {
var isValid = amountData.newAmount >= amountData.minAmount;
if (amountData.oldAmount === undefined) {
if (isValid) {
$amountError.addClass('hidden');
} else {
flipClass($amountInput[0], 'valid', 'invalid');
$amountError.removeClass('hidden');
}
} else if (isValid) {
flipClass($amountInput[0], 'invalid', 'valid');
$amountError.fadeOut();
} else if (amountData.oldAmount >= amountData.minAmount) {
flipClass($amountInput[0], 'valid', 'invalid');
$amountError.fadeIn();
}
});
$amountInput.on('input', function(event) {
event.target.classList.remove('invalid');
}).on('focusout', function(event) {
var amountInput = event.target;
var amountData = buildAmountData(amountInput);
$amountError.trigger(NEW_AMOUNT_EVENT, amountData);
amountInput.dataset.oldAmount = amountData.newAmount;
}).trigger('focusout');
$(form).on('submit', function(event) {
var amountData = buildAmountData($amountInput[0]);
if (amountData.newAmount >= amountData.minAmount) {
$formCorrectionNeeded.addClass('hidden');
} else {
$formCorrectionNeeded.removeClass('hidden')
.css("font-weight", "bold").css("font-size", "150%");
event.preventDefault();
}
});
});
var selectSupportType = function(event) {
var $selectedLink = $(event.target);
$(".supporter-type-selector a").removeClass("supporter-type-selector-selected");
$selectedLink.addClass("supporter-type-selector-selected");
$(".supporter-type-selection").hide();
var hashIndex = event.target.href.lastIndexOf('#');
if (hashIndex > -1) {
$(event.target.href.slice(hashIndex)).show();
}
$formCorrectionNeeded.addClass('hidden');
return false;
};
$(".supporter-type-selector a").bind("click", selectSupportType);
var selectSupportTypeFromHash = function() {
return supportTypeSelector(window.location.hash).click();
};
$window.bind("hashchange", selectSupportTypeFromHash);
if (selectSupportTypeFromHash().length === 0) {
supportTypeSelector("#annual").click();
}
});