File size: 2,182 Bytes
8a37e0a |
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 |
import { useDisclosure } from '@invoke-ai/ui-library';
import { isNil } from 'lodash-es';
import type { ChangeEventHandler, KeyboardEventHandler, RefObject } from 'react';
import { useCallback } from 'react';
import { flushSync } from 'react-dom';
type UseInsertTriggerArg = {
prompt: string;
textareaRef: RefObject<HTMLTextAreaElement>;
onChange: (v: string) => void;
};
export const usePrompt = ({ prompt, textareaRef, onChange: _onChange }: UseInsertTriggerArg) => {
const { isOpen, onClose, onOpen } = useDisclosure();
const onChange: ChangeEventHandler<HTMLTextAreaElement> = useCallback(
(e) => {
_onChange(e.target.value);
},
[_onChange]
);
const insertTrigger = useCallback(
(v: string) => {
if (!textareaRef.current) {
return;
}
// this is where we insert the trigger
const caret = textareaRef.current.selectionStart;
if (isNil(caret)) {
return;
}
let newPrompt = prompt.slice(0, caret);
newPrompt += `${v}`;
// we insert the cursor after the end of trigger
const finalCaretPos = newPrompt.length;
newPrompt += prompt.slice(caret);
// must flush dom updates else selection gets reset
flushSync(() => {
_onChange(newPrompt);
});
// set the cursor position to just after the trigger
textareaRef.current.selectionStart = finalCaretPos;
textareaRef.current.selectionEnd = finalCaretPos;
},
[textareaRef, _onChange, prompt]
);
const onFocus = useCallback(() => {
textareaRef.current?.focus();
}, [textareaRef]);
const handleClosePopover = useCallback(() => {
onClose();
onFocus();
}, [onFocus, onClose]);
const onSelect = useCallback(
(v: string) => {
insertTrigger(v);
handleClosePopover();
},
[handleClosePopover, insertTrigger]
);
const onKeyDown: KeyboardEventHandler<HTMLTextAreaElement> = useCallback(
(e) => {
if (e.key === '<') {
onOpen();
e.preventDefault();
}
},
[onOpen]
);
return {
onChange,
isOpen,
onClose,
onOpen,
onSelect,
onKeyDown,
onFocus,
};
};
|