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| export default {
| data () {
| return {
| hovering: false
| }
| },
|
| props: {
| hoverClass: {
| type: String,
| default: 'none'
| },
| hoverStopPropagation: {
| type: Boolean,
| default: false
| },
| hoverStartTime: {
| type: [Number, String],
| default: 50
| },
| hoverStayTime: {
| type: [Number, String],
| default: 400
| }
| },
|
| methods: {
| _hoverTouchStart (evt) {
| if (evt.touches.length > 1) {
| return
| }
| this._handleHoverStart(evt)
| },
|
| _hoverMousedown (evt) {
| if (this._hoverTouch) {
| return
| }
|
| this._handleHoverStart(evt)
| window.addEventListener('mouseup', this._hoverMouseup)
| },
|
| _handleHoverStart (evt) {
| // TODO detect scrolling
| if (evt._hoverPropagationStopped) {
| return
| }
| if (!this.hoverClass || this.hoverClass === 'none' || this.disabled) {
| return
| }
| if (this.hoverStopPropagation) {
| evt._hoverPropagationStopped = true
| }
| this._hoverTouch = true
| this._hoverStartTimer = setTimeout(() => {
| this.hovering = true
| if (!this._hoverTouch) { // 防止在hoverStartTime时间内触发了 touchend 或 touchcancel
| this._hoverReset()
| }
| }, this.hoverStartTime)
| },
|
| _hoverMouseup () {
| if (!this._hoverTouch) {
| return
| }
|
| this._handleHoverEnd()
| window.removeEventListener('mouseup', this._hoverMouseup)
| },
|
| _hoverTouchEnd () {
| this._handleHoverEnd()
| },
|
| _handleHoverEnd () {
| this._hoverTouch = false
| if (this.hovering) {
| this._hoverReset()
| }
| },
|
| _hoverReset () {
| requestAnimationFrame(() => {
| clearTimeout(this._hoverStayTimer)
| this._hoverStayTimer = setTimeout(() => {
| this.hovering = false
| }, this.hoverStayTime)
| })
| },
|
| _hoverTouchCancel () {
| this._hoverTouch = false
| this.hovering = false
| clearTimeout(this._hoverStartTimer)
| }
| }
| }
|
|
