File size: 6,070 Bytes
bc20498 |
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 |
import { addEventListener, addMeltEventListener, createElHelpers, disabledAttr, effect, executeCallbacks, getDirectionalKeys, getElemDirection, isHTMLElement, kbd, makeElement, omit, overridable, toWritableStores, } from '../../internal/helpers/index.js';
import { safeOnMount } from '../../internal/helpers/lifecycle.js';
import { derived, writable } from 'svelte/store';
import { createHiddenInput } from '../hidden-input/create.js';
const defaults = {
orientation: 'vertical',
loop: true,
disabled: false,
required: false,
defaultValue: undefined,
};
const prefix = 'radio-group';
const { name, selector } = createElHelpers(prefix);
export function createRadioGroup(props) {
const withDefaults = { ...defaults, ...props };
// options
const options = toWritableStores(omit(withDefaults, 'value'));
const { disabled, required, loop, orientation } = options;
const valueWritable = withDefaults.value ?? writable(withDefaults.defaultValue);
const value = overridable(valueWritable, withDefaults?.onValueChange);
/** Lifecycle & Effects */
const focusedHistory = {
prev: null,
curr: null,
};
safeOnMount(() => {
return addEventListener(document, 'focus', (e) => {
const focusedItem = e.target;
if (!isHTMLElement(focusedItem))
return;
focusedHistory.prev = focusedHistory.curr;
focusedHistory.curr = focusedItem;
});
});
let hasActiveTabIndex = false;
effect(value, ($value) => {
if ($value === undefined) {
hasActiveTabIndex = false;
}
else {
hasActiveTabIndex = true;
}
});
/* Helpers */
const selectItem = (item) => {
const disabled = item.dataset.disabled === 'true';
const itemValue = item.dataset.value;
if (disabled || itemValue === undefined)
return;
value.set(itemValue);
};
/** Elements */
const root = makeElement(name(), {
stores: [required, orientation],
returned: ([$required, $orientation]) => {
return {
role: 'radiogroup',
'aria-required': $required,
'data-orientation': $orientation,
};
},
});
const item = makeElement(name('item'), {
stores: [value, orientation, disabled],
returned: ([$value, $orientation, $disabled]) => {
return (props) => {
const itemValue = typeof props === 'string' ? props : props.value;
const argDisabled = typeof props === 'string' ? false : !!props.disabled;
const disabled = $disabled || argDisabled;
const checked = $value === itemValue;
const tabindex = !hasActiveTabIndex ? 0 : checked ? 0 : -1;
hasActiveTabIndex = true;
return {
disabled,
'data-value': itemValue,
'data-orientation': $orientation,
'data-disabled': disabledAttr(disabled),
'data-state': checked ? 'checked' : 'unchecked',
'aria-checked': checked,
type: 'button',
role: 'radio',
tabindex,
};
};
},
action: (node) => {
const unsub = executeCallbacks(addMeltEventListener(node, 'click', () => {
selectItem(node);
}), addMeltEventListener(node, 'keydown', (e) => {
const el = e.currentTarget;
if (!isHTMLElement(el))
return;
const root = el.closest(selector());
if (!isHTMLElement(root))
return;
const items = Array.from(root.querySelectorAll(selector('item'))).filter((el) => isHTMLElement(el) && !el.hasAttribute('data-disabled'));
const currentIndex = items.indexOf(el);
const dir = getElemDirection(root);
const { nextKey, prevKey } = getDirectionalKeys(dir, orientation.get());
const $loop = loop.get();
let itemToFocus = null;
if (e.key === nextKey) {
e.preventDefault();
const nextIndex = currentIndex + 1;
if (nextIndex >= items.length && $loop) {
itemToFocus = items[0];
}
else {
itemToFocus = items[nextIndex];
}
}
else if (e.key === prevKey) {
e.preventDefault();
const prevIndex = currentIndex - 1;
if (prevIndex < 0 && $loop) {
itemToFocus = items[items.length - 1];
}
else {
itemToFocus = items[prevIndex];
}
}
else if (e.key === kbd.HOME) {
e.preventDefault();
itemToFocus = items[0];
}
else if (e.key === kbd.END) {
e.preventDefault();
itemToFocus = items[items.length - 1];
}
if (itemToFocus) {
itemToFocus.focus();
selectItem(itemToFocus);
}
}));
return {
destroy: unsub,
};
},
});
const hiddenInput = createHiddenInput({
value,
disabled,
required,
});
const isChecked = derived(value, ($value) => {
return (itemValue) => {
return $value === itemValue;
};
});
return {
elements: {
root,
item,
hiddenInput,
},
states: {
value,
},
helpers: {
isChecked,
},
options,
};
}
|