209 lines
8.2 KiB
JavaScript
209 lines
8.2 KiB
JavaScript
"use strict";
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Object.defineProperty(exports, "__esModule", {
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value: true
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});
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exports.default = void 0;
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var React = _interopRequireWildcard(require("react"));
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var _useEvent = _interopRequireDefault(require("@rc-component/util/lib/hooks/useEvent"));
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var _useLayoutEffect = _interopRequireDefault(require("@rc-component/util/lib/hooks/useLayoutEffect"));
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var _context = require("../context");
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function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }
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function _getRequireWildcardCache(e) { if ("function" != typeof WeakMap) return null; var r = new WeakMap(), t = new WeakMap(); return (_getRequireWildcardCache = function (e) { return e ? t : r; })(e); }
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function _interopRequireWildcard(e, r) { if (!r && e && e.__esModule) return e; if (null === e || "object" != typeof e && "function" != typeof e) return { default: e }; var t = _getRequireWildcardCache(r); if (t && t.has(e)) return t.get(e); var n = { __proto__: null }, a = Object.defineProperty && Object.getOwnPropertyDescriptor; for (var u in e) if ("default" !== u && Object.prototype.hasOwnProperty.call(e, u)) { var i = a ? Object.getOwnPropertyDescriptor(e, u) : null; i && (i.get || i.set) ? Object.defineProperty(n, u, i) : n[u] = e[u]; } return n.default = e, t && t.set(e, n), n; }
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/** Drag to delete offset. It's a user experience number for dragging out */
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const REMOVE_DIST = 130;
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function getPosition(e) {
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const obj = 'targetTouches' in e ? e.targetTouches[0] : e;
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return {
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pageX: obj.pageX,
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pageY: obj.pageY
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};
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}
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function useDrag(containerRef, direction, rawValues, min, max, formatValue, triggerChange, finishChange, offsetValues, editable, minCount) {
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const [draggingValue, setDraggingValue] = React.useState(null);
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const [draggingIndex, setDraggingIndex] = React.useState(-1);
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const [draggingDelete, setDraggingDelete] = React.useState(false);
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const [cacheValues, setCacheValues] = React.useState(rawValues);
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const [originValues, setOriginValues] = React.useState(rawValues);
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const mouseMoveEventRef = React.useRef(null);
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const mouseUpEventRef = React.useRef(null);
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const touchEventTargetRef = React.useRef(null);
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const {
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onDragStart,
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onDragChange
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} = React.useContext(_context.UnstableContext);
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(0, _useLayoutEffect.default)(() => {
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if (draggingIndex === -1) {
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setCacheValues(rawValues);
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}
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}, [rawValues, draggingIndex]);
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// Clean up event
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React.useEffect(() => () => {
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document.removeEventListener('mousemove', mouseMoveEventRef.current);
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document.removeEventListener('mouseup', mouseUpEventRef.current);
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if (touchEventTargetRef.current) {
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touchEventTargetRef.current.removeEventListener('touchmove', mouseMoveEventRef.current);
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touchEventTargetRef.current.removeEventListener('touchend', mouseUpEventRef.current);
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}
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}, []);
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const flushValues = (nextValues, nextValue, deleteMark) => {
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// Perf: Only update state when value changed
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if (nextValue !== undefined) {
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setDraggingValue(nextValue);
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}
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setCacheValues(nextValues);
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let changeValues = nextValues;
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if (deleteMark) {
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changeValues = nextValues.filter((_, i) => i !== draggingIndex);
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}
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triggerChange(changeValues);
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if (onDragChange) {
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onDragChange({
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rawValues: nextValues,
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deleteIndex: deleteMark ? draggingIndex : -1,
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draggingIndex,
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draggingValue: nextValue
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});
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}
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};
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const updateCacheValue = (0, _useEvent.default)((valueIndex, offsetPercent, deleteMark) => {
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if (valueIndex === -1) {
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// >>>> Dragging on the track
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const startValue = originValues[0];
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const endValue = originValues[originValues.length - 1];
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const maxStartOffset = min - startValue;
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const maxEndOffset = max - endValue;
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// Get valid offset
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let offset = offsetPercent * (max - min);
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offset = Math.max(offset, maxStartOffset);
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offset = Math.min(offset, maxEndOffset);
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// Use first value to revert back of valid offset (like steps marks)
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const formatStartValue = formatValue(startValue + offset);
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offset = formatStartValue - startValue;
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const cloneCacheValues = originValues.map(val => val + offset);
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flushValues(cloneCacheValues);
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} else {
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// >>>> Dragging on the handle
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const offsetDist = (max - min) * offsetPercent;
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// Always start with the valueIndex origin value
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const cloneValues = [...cacheValues];
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cloneValues[valueIndex] = originValues[valueIndex];
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const next = offsetValues(cloneValues, offsetDist, valueIndex, 'dist');
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flushValues(next.values, next.value, deleteMark);
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}
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});
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const onStartMove = (e, valueIndex, startValues) => {
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e.stopPropagation();
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// 如果是点击 track 触发的，需要传入变化后的初始值，而不能直接用 rawValues
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const initialValues = startValues || rawValues;
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const originValue = initialValues[valueIndex];
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setDraggingIndex(valueIndex);
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setDraggingValue(originValue);
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setOriginValues(initialValues);
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setCacheValues(initialValues);
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setDraggingDelete(false);
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const {
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pageX: startX,
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pageY: startY
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} = getPosition(e);
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// We declare it here since closure can't get outer latest value
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let deleteMark = false;
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// Internal trigger event
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if (onDragStart) {
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onDragStart({
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rawValues: initialValues,
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draggingIndex: valueIndex,
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draggingValue: originValue
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});
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}
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// Moving
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const onMouseMove = event => {
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event.preventDefault();
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const {
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pageX: moveX,
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pageY: moveY
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} = getPosition(event);
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const offsetX = moveX - startX;
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const offsetY = moveY - startY;
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const {
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width,
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height
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} = containerRef.current.getBoundingClientRect();
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let offSetPercent;
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let removeDist;
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switch (direction) {
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case 'btt':
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offSetPercent = -offsetY / height;
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removeDist = offsetX;
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break;
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case 'ttb':
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offSetPercent = offsetY / height;
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removeDist = offsetX;
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break;
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case 'rtl':
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offSetPercent = -offsetX / width;
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removeDist = offsetY;
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break;
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default:
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offSetPercent = offsetX / width;
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removeDist = offsetY;
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}
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// Check if need mark remove
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deleteMark = editable ? Math.abs(removeDist) > REMOVE_DIST && minCount < cacheValues.length : false;
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setDraggingDelete(deleteMark);
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updateCacheValue(valueIndex, offSetPercent, deleteMark);
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};
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// End
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const onMouseUp = event => {
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event.preventDefault();
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document.removeEventListener('mouseup', onMouseUp);
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document.removeEventListener('mousemove', onMouseMove);
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if (touchEventTargetRef.current) {
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touchEventTargetRef.current.removeEventListener('touchmove', mouseMoveEventRef.current);
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touchEventTargetRef.current.removeEventListener('touchend', mouseUpEventRef.current);
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}
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mouseMoveEventRef.current = null;
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mouseUpEventRef.current = null;
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touchEventTargetRef.current = null;
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finishChange(deleteMark);
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setDraggingIndex(-1);
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setDraggingDelete(false);
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};
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document.addEventListener('mouseup', onMouseUp);
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document.addEventListener('mousemove', onMouseMove);
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e.currentTarget.addEventListener('touchend', onMouseUp);
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e.currentTarget.addEventListener('touchmove', onMouseMove);
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mouseMoveEventRef.current = onMouseMove;
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mouseUpEventRef.current = onMouseUp;
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touchEventTargetRef.current = e.currentTarget;
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};
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// Only return cache value when it mapping with rawValues
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const returnValues = React.useMemo(() => {
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const sourceValues = [...rawValues].sort((a, b) => a - b);
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const targetValues = [...cacheValues].sort((a, b) => a - b);
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const counts = {};
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targetValues.forEach(val => {
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counts[val] = (counts[val] || 0) + 1;
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});
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sourceValues.forEach(val => {
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counts[val] = (counts[val] || 0) - 1;
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});
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const maxDiffCount = editable ? 1 : 0;
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const diffCount = Object.values(counts).reduce((prev, next) => prev + Math.abs(next), 0);
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return diffCount <= maxDiffCount ? cacheValues : rawValues;
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}, [rawValues, cacheValues, editable]);
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return [draggingIndex, draggingValue, draggingDelete, returnValues, onStartMove];
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}
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var _default = exports.default = useDrag; |