90 lines
2.9 KiB
JavaScript
90 lines
2.9 KiB
JavaScript
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import { isObj } from '../common/utils';
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const getClassNames = (name) => ({
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enter: `van-${name}-enter van-${name}-enter-active enter-class enter-active-class`,
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'enter-to': `van-${name}-enter-to van-${name}-enter-active enter-to-class enter-active-class`,
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leave: `van-${name}-leave van-${name}-leave-active leave-class leave-active-class`,
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'leave-to': `van-${name}-leave-to van-${name}-leave-active leave-to-class leave-active-class`
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});
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const requestAnimationFrame = (cb) => setTimeout(cb, 1000 / 60);
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export const transition = function (showDefaultValue) {
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return Behavior({
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properties: {
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customStyle: String,
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show: {
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type: Boolean,
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value: showDefaultValue,
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observer: 'observeShow'
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},
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duration: {
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type: [Number, Object],
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value: 300,
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observer: 'observeDuration'
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},
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name: {
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type: String,
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value: 'fade',
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observer: 'updateClasses'
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}
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},
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data: {
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type: '',
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inited: false,
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display: false,
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classNames: getClassNames('fade')
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},
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attached() {
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if (this.data.show) {
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this.show();
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}
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},
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methods: {
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observeShow(value) {
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if (value) {
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this.show();
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}
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else {
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this.leave();
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}
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},
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updateClasses(name) {
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this.set({
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classNames: getClassNames(name)
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});
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},
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show() {
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const { classNames, duration } = this.data;
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this.set({
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inited: true,
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display: true,
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classes: classNames.enter,
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currentDuration: isObj(duration) ? duration.enter : duration
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}).then(() => {
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requestAnimationFrame(() => {
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this.set({
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classes: classNames['enter-to']
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});
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});
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});
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},
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leave() {
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const { classNames, duration } = this.data;
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this.set({
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classes: classNames.leave,
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currentDuration: isObj(duration) ? duration.leave : duration
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}).then(() => {
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requestAnimationFrame(() => {
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this.set({
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classes: classNames['leave-to']
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});
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});
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});
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},
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onTransitionEnd() {
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if (!this.data.show) {
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this.set({ display: false });
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}
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}
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}
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});
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};
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