jonnybarnes.uk/public/assets/js/form-save.js

69 lines
2.1 KiB
JavaScript

/* global alertify, store */
var feature = {
addEventListener : !!window.addEventListener,
querySelectorAll : !!document.querySelectorAll
};
if (feature.addEventListener && feature.querySelectorAll) {
var keys = getKeys();
for (var i = 0; i < keys.length; i++) {
if (store.get(keys[i])) {
var formId = keys[i].split('~')[1];
document.getElementById(formId).value = store.get(keys[i]);
}
}
}
var timerId = window.setInterval(function() {
var saved = false;
var inputs = document.querySelectorAll('input[type=text], textarea');
for (var i = 0; i < inputs.length; i++) {
var key = getFormElement(inputs[i]).id + '~' + inputs[i].id;
if (store.get(key) !== inputs[i].value && inputs[i].value !== '') {
store.set(key, inputs[i].value);
saved = true;
}
}
if (saved === true) {
alertify.logPosition('top right');
alertify.success('Auto saved text');
}
}, 5000);
var forms = document.querySelectorAll('form');
for (var f = 0; f < forms.length; f++) {
var form = forms[f];
form.addEventListener('submit', function() {
window.clearInterval(timerId);
var formId = form.id;
var storedKeys = store.keys();
for (var i = 0; i < storedKeys.length; i++) {
if (storedKeys[i].indexOf(formId) > -1) {
store.remove(storedKeys[i]);
}
}
});
}
function getKeys() {
var keys = [];
var formFields = document.querySelectorAll('input[type=text], textarea');
for (var f = 0; f < formFields.length; f++) {
var parent = getFormElement(formFields[f]);
if (parent !== false) {
var key = parent.id + '~' + formFields[f].id;
keys.push(key);
}
}
return keys;
}
function getFormElement(elem) {
if (elem.nodeName.toLowerCase() !== 'body') {
var parent = elem.parentNode;
if (parent.nodeName.toLowerCase() === 'form') {
return parent;
} else {
return getFormElement(parent);
}
} else {
return false;
}
}