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import { addMeltEventListener, createElHelpers, disabledAttr, executeCallbacks, isBrowser, isHTMLElement, isHTMLInputElement, last, makeElement, next, omit, overridable, prev, toWritableStores, } from '../../internal/helpers/index.js';
import { tick } from 'svelte';
import { derived, readonly, writable } from 'svelte/store';
import { generateIds } from '../../internal/helpers/id.js';
import { createHiddenInput } from '../hidden-input/create.js';
const prefix = 'pin-input';
const { name, selector } = createElHelpers(prefix);
const getInputs = (node) => {
const rootEl = node.closest(selector());
if (!isHTMLElement(rootEl)) {
return { inputs: null, el: node, elIndex: -1 };
}
const inputs = Array.from(rootEl.querySelectorAll(selector('input'))).filter((input) => isHTMLInputElement(input));
return {
elIndex: inputs.indexOf(node),
inputs,
};
};
const defaults = {
placeholder: '○',
disabled: false,
type: 'text',
name: undefined,
defaultValue: [],
};
export const pinInputIdParts = ['root'];
export function createPinInput(props) {
const withDefaults = { ...defaults, ...props };
const options = toWritableStores(omit(withDefaults, 'value', 'ids'));
const { placeholder, disabled, type, name: nameStore } = options;
const valueWritable = withDefaults.value ?? writable(withDefaults.defaultValue);
const value = overridable(valueWritable, withDefaults?.onValueChange);
const valueStr = derived(value, (v) => v.join(''));
const ids = toWritableStores({ ...generateIds(pinInputIdParts), ...withDefaults.ids });
const root = makeElement(name(), {
stores: [value, ids.root],
returned: ([$value, $rootId]) => {
return {
id: $rootId,
'data-complete': $value.length && $value.every((v) => v.length > 0) ? '' : undefined,
};
},
});
let index = 0;
const getTotalItems = () => {
if (!isBrowser)
return Infinity;
const rootEl = document.getElementById(ids.root.get());
if (!rootEl)
return Infinity;
const inputs = Array.from(rootEl.querySelectorAll(selector('input')));
return inputs.length;
};
const input = makeElement(name('input'), {
stores: [value, placeholder, disabled, type],
returned: ([$value, $placeholder, $disabled, $type]) => {
return () => {
const totalItems = getTotalItems();
const currIndex = index % totalItems;
index = (index + 1) % totalItems;
const currValue = $value[currIndex] ?? '';
return {
'data-complete': $value.length && $value.every((v) => v.length > 0) ? '' : undefined,
placeholder: $placeholder,
disabled: disabledAttr($disabled),
type: $type,
value: currValue,
};
};
},
action: (node) => {
const { elIndex } = getInputs(node);
value.update((v) => {
v[elIndex] = node.value;
return v;
});
const unsub = executeCallbacks(addMeltEventListener(node, 'keydown', (e) => {
const { inputs, elIndex } = getInputs(node);
if (!inputs)
return;
if (e.key === 'Backspace') {
e.preventDefault();
if (node.value) {
node.value = '';
tick().then(() => (node.placeholder = ''));
value.set(inputs.map((input) => input.value.slice(-1) ?? undefined));
}
else {
const prevEl = prev(inputs, elIndex, false);
prevEl.focus();
prevEl.value = '';
tick().then(() => (prevEl.placeholder = ''));
value.set(inputs.map((input) => input.value.slice(-1) ?? undefined));
}
}
if (e.key === 'Delete') {
e.preventDefault();
node.value = '';
tick().then(() => (node.placeholder = ''));
value.set(inputs.map((input) => input.value.slice(-1) ?? undefined));
}
if (e.key === 'ArrowLeft') {
e.preventDefault();
const prevEl = prev(inputs, elIndex, false);
prevEl.focus();
}
if (e.key === 'ArrowRight') {
e.preventDefault();
const nextEl = next(inputs, elIndex, false);
nextEl.focus();
}
if (e.key === 'Home') {
e.preventDefault();
inputs[0].focus();
}
if (e.key === 'End') {
e.preventDefault();
last(inputs).focus();
}
}), addMeltEventListener(node, 'input', (e) => {
const { inputs, elIndex } = getInputs(node);
if (!inputs)
return;
const getInputted = (el) => {
const $value = value.get();
const prevElValue = $value[elIndex];
const selectionStart = el.selectionStart ?? 1;
if (!prevElValue)
return el.value;
return selectionStart > 1
? el.value.slice(1)
: el.value.slice(0, Math.max(el.value.length - 2, 1));
};
const inputted = getInputted(node);
const inputEvent = e;
if (inputEvent.inputType === 'insertFromPaste') {
return;
}
// Only allow 1 character, get last
node.value = inputted.slice(-1);
if (node.value.length !== 0) {
const nextEl = next(inputs, elIndex, false);
nextEl.focus();
}
value.set(inputs.map((input) => input.value.slice(-1) ?? undefined));
}), addMeltEventListener(node, 'paste', (e) => {
e.preventDefault();
const { inputs, elIndex } = getInputs(node);
if (!inputs)
return;
const inputEvent = e;
const clipboardData = inputEvent.clipboardData;
if (!clipboardData)
return;
const pasted = clipboardData.getData('text');
const initialIndex = pasted.length >= inputs.length ? 0 : elIndex;
const lastIndex = Math.min(initialIndex + pasted.length, inputs.length);
for (let i = initialIndex; i < lastIndex; i++) {
const input = inputs[i];
input.value = pasted[i - initialIndex];
input.focus();
}
inputs[lastIndex]?.focus();
value.set(inputs.map((input) => input.value.slice(-1) ?? undefined));
}), addMeltEventListener(node, 'change', () => {
const { inputs } = getInputs(node);
if (!inputs)
return;
value.set(inputs.map((input) => input.value.slice(-1) ?? undefined));
}), addMeltEventListener(node, 'focus', () => {
node.setSelectionRange(1, 1);
node.placeholder = '';
tick().then(() => {
node.placeholder = '';
});
}), addMeltEventListener(node, 'blur', () => {
node.placeholder = placeholder.get();
}));
return {
destroy() {
unsub();
},
};
},
});
const hiddenInput = createHiddenInput({
value: valueStr,
disabled,
name: nameStore,
prefix,
});
const clear = () => {
value.update((v) => {
v.forEach((_, i) => (v[i] = ''));
return v;
});
};
return {
ids,
elements: {
root,
input,
hiddenInput,
},
states: {
value,
valueStr: readonly(valueStr),
},
helpers: {
clear,
},
options,
};
}
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