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| import { VantComponent } from '../common/component';
| import { touch } from '../mixins/touch';
| import { range } from '../common/utils';
| const THRESHOLD = 0.3;
| let ARRAY = [];
| VantComponent({
| props: {
| disabled: Boolean,
| leftWidth: {
| type: Number,
| value: 0,
| observer(leftWidth = 0) {
| if (this.offset > 0) {
| this.swipeMove(leftWidth);
| }
| },
| },
| rightWidth: {
| type: Number,
| value: 0,
| observer(rightWidth = 0) {
| if (this.offset < 0) {
| this.swipeMove(-rightWidth);
| }
| },
| },
| asyncClose: Boolean,
| name: {
| type: null,
| value: '',
| },
| },
| mixins: [touch],
| data: {
| catchMove: false,
| wrapperStyle: '',
| },
| created() {
| this.offset = 0;
| ARRAY.push(this);
| },
| destroyed() {
| ARRAY = ARRAY.filter((item) => item !== this);
| },
| methods: {
| open(position) {
| const { leftWidth, rightWidth } = this.data;
| const offset = position === 'left' ? leftWidth : -rightWidth;
| this.swipeMove(offset);
| this.$emit('open', {
| position,
| name: this.data.name,
| });
| },
| close() {
| this.swipeMove(0);
| },
| swipeMove(offset = 0) {
| this.offset = range(offset, -this.data.rightWidth, this.data.leftWidth);
| const transform = `translate3d(${this.offset}px, 0, 0)`;
| const transition = this.dragging
| ? 'none'
| : 'transform .6s cubic-bezier(0.18, 0.89, 0.32, 1)';
| this.setData({
| wrapperStyle: `
| -webkit-transform: ${transform};
| -webkit-transition: ${transition};
| transform: ${transform};
| transition: ${transition};
| `,
| });
| },
| swipeLeaveTransition() {
| const { leftWidth, rightWidth } = this.data;
| const { offset } = this;
| if (rightWidth > 0 && -offset > rightWidth * THRESHOLD) {
| this.open('right');
| } else if (leftWidth > 0 && offset > leftWidth * THRESHOLD) {
| this.open('left');
| } else {
| this.swipeMove(0);
| }
| this.setData({ catchMove: false });
| },
| startDrag(event) {
| if (this.data.disabled) {
| return;
| }
| this.startOffset = this.offset;
| this.touchStart(event);
| },
| noop() {},
| onDrag(event) {
| if (this.data.disabled) {
| return;
| }
| this.touchMove(event);
| if (this.direction !== 'horizontal') {
| return;
| }
| this.dragging = true;
| ARRAY.filter(
| (item) => item !== this && item.offset !== 0
| ).forEach((item) => item.close());
| this.setData({ catchMove: true });
| this.swipeMove(this.startOffset + this.deltaX);
| },
| endDrag() {
| if (this.data.disabled) {
| return;
| }
| this.dragging = false;
| this.swipeLeaveTransition();
| },
| onClick(event) {
| const { key: position = 'outside' } = event.currentTarget.dataset;
| this.$emit('click', position);
| if (!this.offset) {
| return;
| }
| if (this.data.asyncClose) {
| this.$emit('close', {
| position,
| instance: this,
| name: this.data.name,
| });
| } else {
| this.swipeMove(0);
| }
| },
| },
| });
|
|
