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Debounce floating post button autohide

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This commit is contained in:
eugenijm 2019-04-29 22:38:07 +03:00
parent ae1496cfb4
commit b18fea8508
1 changed files with 24 additions and 32 deletions
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56
src/components/mobile_post_status_modal/mobile_post_status_modal.js
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@ -1,5 +1,5 @@
import PostStatusForm from '../post_status_form/post_status_form.vue'
import { throttle, debounce } from 'lodash'
import { debounce } from 'lodash'
const MobilePostStatusModal = {
components: {
@ -17,15 +17,13 @@ const MobilePostStatusModal = {
},
created () {
if (this.autohideFloatingPostButton) {
window.addEventListener('scroll', this.handleScroll)
window.addEventListener('scroll', this.handleScrollDown)
this.activateFloatingPostButtonAutohide()
}
window.addEventListener('resize', this.handleOSK)
},
destroyed () {
if (this.autohideFloatingPostButton) {
window.removeEventListener('scroll', this.handleScroll)
window.removeEventListener('scroll', this.handleScrollDown)
this.deactivateFloatingPostButtonAutohide()
}
window.removeEventListener('resize', this.handleOSK)
},
@ -43,15 +41,21 @@ const MobilePostStatusModal = {
watch: {
autohideFloatingPostButton: function (isEnabled) {
if (isEnabled) {
window.addEventListener('scroll', this.handleScroll)
window.addEventListener('scroll', this.handleScrollDown)
this.activateFloatingPostButtonAutohide()
} else {
window.removeEventListener('scroll', this.handleScroll)
window.removeEventListener('scroll', this.handleScrollDown)
this.deactivateFloatingPostButtonAutohide()
}
}
},
methods: {
activateFloatingPostButtonAutohide () {
window.addEventListener('scroll', this.handleScrollStart)
window.addEventListener('scroll', this.handleScrollEnd)
},
deactivateFloatingPostButtonAutohide () {
window.removeEventListener('scroll', this.handleScrollStart)
window.removeEventListener('scroll', this.handleScrollEnd)
},
openPostForm () {
this.postFormOpen = true
this.hidden = true
@ -85,31 +89,19 @@ const MobilePostStatusModal = {
this.inputActive = false
}
},
handleScroll: throttle(function () {
const scrollAmount = window.scrollY - this.oldScrollPos
const scrollingDown = scrollAmount > 0
if (scrollingDown !== this.scrollingDown) {
this.amountScrolled = 0
this.scrollingDown = scrollingDown
if (!scrollingDown) {
this.hidden = false
}
} else if (scrollingDown) {
this.amountScrolled += scrollAmount
if (this.amountScrolled > 100 && !this.hidden) {
this.hidden = true
}
}
this.oldScrollPos = window.scrollY
this.scrollingDown = scrollingDown
}, 100),
handleScrollDown: debounce(function () {
if (this.scrollingDown) {
handleScrollStart: debounce(function () {
if (window.scrollY > this.oldScrollPos) {
this.hidden = true
} else {
this.hidden = false
}
}, 100)
this.oldScrollPos = window.scrollY
}, 100, {leading: true, trailing: false}),
handleScrollEnd: debounce(function () {
this.hidden = false
this.oldScrollPos = window.scrollY
}, 100, {leading: false, trailing: true})
}
}