|
| 1 | +import React from 'react'; |
| 2 | + |
| 3 | +import {b} from './shared'; |
| 4 | +import {calculateColumnWidth, rafThrottle} from './utils'; |
| 5 | + |
| 6 | +interface ResizeHandlerProps { |
| 7 | + maxWidth?: number; |
| 8 | + minWidth?: number; |
| 9 | + getCurrentColumnWidth: () => number | undefined; |
| 10 | + onResize?: (width: number) => void; |
| 11 | +} |
| 12 | + |
| 13 | +export function ResizeHandler({ |
| 14 | + minWidth, |
| 15 | + maxWidth, |
| 16 | + getCurrentColumnWidth, |
| 17 | + onResize, |
| 18 | +}: ResizeHandlerProps) { |
| 19 | + const elementRef = React.useRef<HTMLElement>(null); |
| 20 | + |
| 21 | + const [resizing, setResizing] = React.useState(false); |
| 22 | + |
| 23 | + React.useEffect(() => { |
| 24 | + const element = elementRef.current; |
| 25 | + |
| 26 | + if (!element) { |
| 27 | + return undefined; |
| 28 | + } |
| 29 | + |
| 30 | + let mouseXPosition: number | undefined; |
| 31 | + let initialColumnWidth: number | undefined; |
| 32 | + let currentColumnWidth: number | undefined; |
| 33 | + |
| 34 | + const onMouseMove = rafThrottle((e: MouseEvent) => { |
| 35 | + restrictMouseEvent(e); |
| 36 | + |
| 37 | + if (typeof mouseXPosition !== 'number' || typeof initialColumnWidth !== 'number') { |
| 38 | + return; |
| 39 | + } |
| 40 | + |
| 41 | + const xDiff = e.clientX - mouseXPosition; |
| 42 | + |
| 43 | + const newWidth = calculateColumnWidth(initialColumnWidth + xDiff, minWidth, maxWidth); |
| 44 | + |
| 45 | + if (newWidth === currentColumnWidth) { |
| 46 | + return; |
| 47 | + } |
| 48 | + |
| 49 | + currentColumnWidth = newWidth; |
| 50 | + |
| 51 | + onResize?.(currentColumnWidth); |
| 52 | + }); |
| 53 | + |
| 54 | + const onMouseUp = (e: MouseEvent) => { |
| 55 | + restrictMouseEvent(e); |
| 56 | + |
| 57 | + if (currentColumnWidth !== undefined) { |
| 58 | + onResize?.(currentColumnWidth); |
| 59 | + } |
| 60 | + |
| 61 | + setResizing(false); |
| 62 | + mouseXPosition = undefined; |
| 63 | + |
| 64 | + document.removeEventListener('mousemove', onMouseMove); |
| 65 | + document.removeEventListener('mouseup', onMouseUp); |
| 66 | + }; |
| 67 | + |
| 68 | + const onMouseDown = (e: MouseEvent) => { |
| 69 | + initialColumnWidth = getCurrentColumnWidth(); |
| 70 | + |
| 71 | + restrictMouseEvent(e); |
| 72 | + |
| 73 | + mouseXPosition = e.clientX; |
| 74 | + |
| 75 | + setResizing(true); |
| 76 | + |
| 77 | + document.addEventListener('mousemove', onMouseMove); |
| 78 | + document.addEventListener('mouseup', onMouseUp); |
| 79 | + }; |
| 80 | + |
| 81 | + element.addEventListener('mousedown', onMouseDown); |
| 82 | + |
| 83 | + return () => { |
| 84 | + element.removeEventListener('mousedown', onMouseDown); |
| 85 | + document.removeEventListener('mousemove', onMouseMove); |
| 86 | + document.removeEventListener('mouseup', onMouseUp); |
| 87 | + }; |
| 88 | + }, [onResize, minWidth, maxWidth, getCurrentColumnWidth]); |
| 89 | + |
| 90 | + return ( |
| 91 | + <span |
| 92 | + ref={elementRef} |
| 93 | + className={b('resize-handler', {resizing})} |
| 94 | + // Prevent sort trigger on resize |
| 95 | + onClick={(e) => restrictMouseEvent(e)} |
| 96 | + /> |
| 97 | + ); |
| 98 | +} |
| 99 | + |
| 100 | +// Prevent sort trigger and text selection on resize |
| 101 | +function restrictMouseEvent< |
| 102 | + T extends {preventDefault: VoidFunction; stopPropagation: VoidFunction}, |
| 103 | +>(e: T) { |
| 104 | + e.preventDefault(); |
| 105 | + e.stopPropagation(); |
| 106 | +} |
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