1 | import { useCallback, useMemo, useRef } from 'react';
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2 | import useEventCallback from './useEventCallback';
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3 | import useMounted from './useMounted';
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30 | export default function useFocusManager(opts) {
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31 | var isMounted = useMounted();
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32 | var lastFocused = useRef();
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33 | var handle = useRef();
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34 | var willHandle = useEventCallback(opts.willHandle);
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35 | var didHandle = useEventCallback(opts.didHandle);
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36 | var onChange = useEventCallback(opts.onChange);
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37 | var isDisabled = useEventCallback(opts.isDisabled);
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38 | var handleFocusChange = useCallback(function (focused, event) {
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39 | if (event && event.persist) event.persist();
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40 | if (willHandle && willHandle(focused, event) === false) return;
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41 | clearTimeout(handle.current);
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42 | handle.current = window.setTimeout(function () {
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43 | if (focused !== lastFocused.current) {
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44 | if (didHandle) didHandle(focused, event);
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46 | if (isMounted() || !focused) {
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47 | lastFocused.current = focused;
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48 | onChange && onChange(focused, event);
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49 | }
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50 | }
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51 | });
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52 | }, [isMounted, willHandle, didHandle, onChange, lastFocused]);
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53 | var handleBlur = useCallback(function (event) {
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54 | if (!isDisabled()) handleFocusChange(false, event);
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55 | }, [handleFocusChange, isDisabled]);
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56 | var handleFocus = useCallback(function (event) {
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57 | if (!isDisabled()) handleFocusChange(true, event);
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58 | }, [handleFocusChange, isDisabled]);
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59 | return useMemo(function () {
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60 | return {
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61 | onBlur: handleBlur,
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62 | onFocus: handleFocus
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63 | };
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64 | }, [handleBlur, handleFocus]);
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65 | } |
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