@svelteschool/svelte-forms
Version:
A simple form component that doesn't care about what you put in it. It just works.
421 lines (394 loc) • 12 kB
JavaScript
function noop() { }
function assign(tar, src) {
// @ts-ignore
for (const k in src)
tar[k] = src[k];
return tar;
}
function run(fn) {
return fn();
}
function blank_object() {
return Object.create(null);
}
function run_all(fns) {
fns.forEach(run);
}
function is_function(thing) {
return typeof thing === 'function';
}
function safe_not_equal(a, b) {
return a != a ? b == b : a !== b || ((a && typeof a === 'object') || typeof a === 'function');
}
function create_slot(definition, ctx, $$scope, fn) {
if (definition) {
const slot_ctx = get_slot_context(definition, ctx, $$scope, fn);
return definition[0](slot_ctx);
}
}
function get_slot_context(definition, ctx, $$scope, fn) {
return definition[1] && fn
? assign($$scope.ctx.slice(), definition[1](fn(ctx)))
: $$scope.ctx;
}
function get_slot_changes(definition, $$scope, dirty, fn) {
if (definition[2] && fn) {
const lets = definition[2](fn(dirty));
if ($$scope.dirty === undefined) {
return lets;
}
if (typeof lets === 'object') {
const merged = [];
const len = Math.max($$scope.dirty.length, lets.length);
for (let i = 0; i < len; i += 1) {
merged[i] = $$scope.dirty[i] | lets[i];
}
return merged;
}
return $$scope.dirty | lets;
}
return $$scope.dirty;
}
function action_destroyer(action_result) {
return action_result && is_function(action_result.destroy) ? action_result.destroy : noop;
}
function insert(target, node, anchor) {
target.insertBefore(node, anchor || null);
}
function detach(node) {
node.parentNode.removeChild(node);
}
function element(name) {
return document.createElement(name);
}
function listen(node, event, handler, options) {
node.addEventListener(event, handler, options);
return () => node.removeEventListener(event, handler, options);
}
function children(element) {
return Array.from(element.childNodes);
}
let current_component;
function set_current_component(component) {
current_component = component;
}
// TODO figure out if we still want to support
// shorthand events, or if we want to implement
// a real bubbling mechanism
function bubble(component, event) {
const callbacks = component.$$.callbacks[event.type];
if (callbacks) {
callbacks.slice().forEach(fn => fn(event));
}
}
const dirty_components = [];
const binding_callbacks = [];
const render_callbacks = [];
const flush_callbacks = [];
const resolved_promise = Promise.resolve();
let update_scheduled = false;
function schedule_update() {
if (!update_scheduled) {
update_scheduled = true;
resolved_promise.then(flush);
}
}
function add_render_callback(fn) {
render_callbacks.push(fn);
}
let flushing = false;
const seen_callbacks = new Set();
function flush() {
if (flushing)
return;
flushing = true;
do {
// first, call beforeUpdate functions
// and update components
for (let i = 0; i < dirty_components.length; i += 1) {
const component = dirty_components[i];
set_current_component(component);
update(component.$$);
}
dirty_components.length = 0;
while (binding_callbacks.length)
binding_callbacks.pop()();
// then, once components are updated, call
// afterUpdate functions. This may cause
// subsequent updates...
for (let i = 0; i < render_callbacks.length; i += 1) {
const callback = render_callbacks[i];
if (!seen_callbacks.has(callback)) {
// ...so guard against infinite loops
seen_callbacks.add(callback);
callback();
}
}
render_callbacks.length = 0;
} while (dirty_components.length);
while (flush_callbacks.length) {
flush_callbacks.pop()();
}
update_scheduled = false;
flushing = false;
seen_callbacks.clear();
}
function update($$) {
if ($$.fragment !== null) {
$$.update();
run_all($$.before_update);
const dirty = $$.dirty;
$$.dirty = [-1];
$$.fragment && $$.fragment.p($$.ctx, dirty);
$$.after_update.forEach(add_render_callback);
}
}
const outroing = new Set();
let outros;
function transition_in(block, local) {
if (block && block.i) {
outroing.delete(block);
block.i(local);
}
}
function transition_out(block, local, detach, callback) {
if (block && block.o) {
if (outroing.has(block))
return;
outroing.add(block);
outros.c.push(() => {
outroing.delete(block);
if (callback) {
if (detach)
block.d(1);
callback();
}
});
block.o(local);
}
}
function mount_component(component, target, anchor) {
const { fragment, on_mount, on_destroy, after_update } = component.$$;
fragment && fragment.m(target, anchor);
// onMount happens before the initial afterUpdate
add_render_callback(() => {
const new_on_destroy = on_mount.map(run).filter(is_function);
if (on_destroy) {
on_destroy.push(...new_on_destroy);
}
else {
// Edge case - component was destroyed immediately,
// most likely as a result of a binding initialising
run_all(new_on_destroy);
}
component.$$.on_mount = [];
});
after_update.forEach(add_render_callback);
}
function destroy_component(component, detaching) {
const $$ = component.$$;
if ($$.fragment !== null) {
run_all($$.on_destroy);
$$.fragment && $$.fragment.d(detaching);
// TODO null out other refs, including component.$$ (but need to
// preserve final state?)
$$.on_destroy = $$.fragment = null;
$$.ctx = [];
}
}
function make_dirty(component, i) {
if (component.$$.dirty[0] === -1) {
dirty_components.push(component);
schedule_update();
component.$$.dirty.fill(0);
}
component.$$.dirty[(i / 31) | 0] |= (1 << (i % 31));
}
function init(component, options, instance, create_fragment, not_equal, props, dirty = [-1]) {
const parent_component = current_component;
set_current_component(component);
const prop_values = options.props || {};
const $$ = component.$$ = {
fragment: null,
ctx: null,
// state
props,
update: noop,
not_equal,
bound: blank_object(),
// lifecycle
on_mount: [],
on_destroy: [],
before_update: [],
after_update: [],
context: new Map(parent_component ? parent_component.$$.context : []),
// everything else
callbacks: blank_object(),
dirty
};
let ready = false;
$$.ctx = instance
? instance(component, prop_values, (i, ret, ...rest) => {
const value = rest.length ? rest[0] : ret;
if ($$.ctx && not_equal($$.ctx[i], $$.ctx[i] = value)) {
if ($$.bound[i])
$$.bound[i](value);
if (ready)
make_dirty(component, i);
}
return ret;
})
: [];
$$.update();
ready = true;
run_all($$.before_update);
// `false` as a special case of no DOM component
$$.fragment = create_fragment ? create_fragment($$.ctx) : false;
if (options.target) {
if (options.hydrate) {
const nodes = children(options.target);
// eslint-disable-next-line @typescript-eslint/no-non-null-assertion
$$.fragment && $$.fragment.l(nodes);
nodes.forEach(detach);
}
else {
// eslint-disable-next-line @typescript-eslint/no-non-null-assertion
$$.fragment && $$.fragment.c();
}
if (options.intro)
transition_in(component.$$.fragment);
mount_component(component, options.target, options.anchor);
flush();
}
set_current_component(parent_component);
}
class SvelteComponent {
$destroy() {
destroy_component(this, 1);
this.$destroy = noop;
}
$on(type, callback) {
const callbacks = (this.$$.callbacks[type] || (this.$$.callbacks[type] = []));
callbacks.push(callback);
return () => {
const index = callbacks.indexOf(callback);
if (index !== -1)
callbacks.splice(index, 1);
};
}
$set() {
// overridden by instance, if it has props
}
}
function getValues(node) {
const inputs = [].slice.call(node.querySelectorAll('input'));
inputs.forEach(el => {
el.oninput = node.onchange;
});
node.addEventListener('input', handleUpdate);
function handleUpdate() {
node.dispatchEvent(new CustomEvent('update', {
detail: { ...serialize(node) }
}));
}
function serialize(form) {
var i = 0, j, key, tmp, out = {};
var rgx1 = /(radio|checkbox)/i;
var rgx2 = /(file|reset|submit|button)/i;
while (tmp = form.elements[i++]) {
// Ignore unnamed, disabled, or (...rgx2) inputs
if (!tmp.name || tmp.disabled || rgx2.test(tmp.type)) continue;
key = tmp.name;
// Grab all values from multi-select
if (tmp.type === 'select-multiple') {
out[key] = [];
for (j = 0; j < tmp.options.length; j++) {
if (tmp.options[j].selected) {
out[key].push(tmp.options[j].value);
}
}
} else if (rgx1.test(tmp.type)) {
if (tmp.checked) {
j = out[key];
tmp = tmp.value === 'on' || tmp.value;
out[key] = (j == null && j !== 0) ? tmp : [].concat(j, tmp);
}
} else if (tmp.value || tmp.value === 0) {
j = out[key];
out[key] = (j == null && j !== 0) ? tmp.value : [].concat(j, tmp.value);
}
}
return out;
}
handleUpdate();
return {
destroy() {
node.removeEventListener('input', handleUpdate);
}
};
}
/* src/Form.svelte generated by Svelte v3.20.1 */
function create_fragment(ctx) {
let form;
let getValues_action;
let current;
let dispose;
const default_slot_template = /*$$slots*/ ctx[1].default;
const default_slot = create_slot(default_slot_template, ctx, /*$$scope*/ ctx[0], null);
return {
c() {
form = element("form");
if (default_slot) default_slot.c();
},
m(target, anchor, remount) {
insert(target, form, anchor);
if (default_slot) {
default_slot.m(form, null);
}
current = true;
if (remount) run_all(dispose);
dispose = [
action_destroyer(getValues_action = getValues.call(null, form)),
listen(form, "update", /*update_handler*/ ctx[2])
];
},
p(ctx, [dirty]) {
if (default_slot) {
if (default_slot.p && dirty & /*$$scope*/ 1) {
default_slot.p(get_slot_context(default_slot_template, ctx, /*$$scope*/ ctx[0], null), get_slot_changes(default_slot_template, /*$$scope*/ ctx[0], dirty, null));
}
}
},
i(local) {
if (current) return;
transition_in(default_slot, local);
current = true;
},
o(local) {
transition_out(default_slot, local);
current = false;
},
d(detaching) {
if (detaching) detach(form);
if (default_slot) default_slot.d(detaching);
run_all(dispose);
}
};
}
function instance($$self, $$props, $$invalidate) {
let { $$slots = {}, $$scope } = $$props;
function update_handler(event) {
bubble($$self, event);
}
$$self.$set = $$props => {
if ("$$scope" in $$props) $$invalidate(0, $$scope = $$props.$$scope);
};
return [$$scope, $$slots, update_handler];
}
class Form extends SvelteComponent {
constructor(options) {
super();
init(this, options, instance, create_fragment, safe_not_equal, {});
}
}
export default Form;