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Simplify ScrollSpy config #33250

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merged 4 commits into from Apr 6, 2021
Merged

Simplify ScrollSpy config #33250

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83ca243
Refactor ScrollSpy
GeoSot Mar 3, 2021
9b2cbee
use a basicJQueryInterface
GeoSot Mar 3, 2021
bc6dfdf
revert jQueryInterface
GeoSot Apr 5, 2021
9e1718a
Merge branch 'main' into simplify-scrollspy-config
XhmikosR Apr 6, 2021
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21 changes: 9 additions & 12 deletions js/src/scrollspy.js
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Expand Up @@ -12,7 +12,6 @@ import {
isElement,
typeCheckConfig
} from './util/index'
import Data from './dom/data'
import EventHandler from './dom/event-handler'
import Manipulator from './dom/manipulator'
import SelectorEngine from './dom/selector-engine'
Expand Down Expand Up @@ -155,6 +154,7 @@ class ScrollSpy extends BaseComponent {
_getConfig(config) {
config = {
...Default,
...Manipulator.getDataAttributes(this._element),
...(typeof config === 'object' && config ? config : {})
}

Expand Down Expand Up @@ -278,20 +278,17 @@ class ScrollSpy extends BaseComponent {

static jQueryInterface(config) {
return this.each(function () {
let data = Data.get(this, DATA_KEY)
const _config = typeof config === 'object' && config
const data = ScrollSpy.getInstance(this) || new ScrollSpy(this, typeof config === 'object' ? config : {})

if (!data) {
data = new ScrollSpy(this, _config)
if (typeof config !== 'string') {
return
}

if (typeof config === 'string') {
if (typeof data[config] === 'undefined') {
throw new TypeError(`No method named "${config}"`)
}

data[config]()
if (typeof data[config] === 'undefined') {
throw new TypeError(`No method named "${config}"`)
}

data[config]()
})
}
}
Expand All @@ -304,7 +301,7 @@ class ScrollSpy extends BaseComponent {

EventHandler.on(window, EVENT_LOAD_DATA_API, () => {
SelectorEngine.find(SELECTOR_DATA_SPY)
.forEach(spy => new ScrollSpy(spy, Manipulator.getDataAttributes(spy)))
.forEach(spy => new ScrollSpy(spy))
})

/**
Expand Down
17 changes: 17 additions & 0 deletions js/tests/unit/scrollspy.spec.js
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Expand Up @@ -605,6 +605,23 @@ describe('ScrollSpy', () => {
expect(ScrollSpy.getInstance(div)).toBeDefined()
})

it('should create a scrollspy with given config', () => {
fixtureEl.innerHTML = '<div></div>'

const div = fixtureEl.querySelector('div')

jQueryMock.fn.scrollspy = ScrollSpy.jQueryInterface
jQueryMock.elements = [div]

jQueryMock.fn.scrollspy.call(jQueryMock, { offset: 15 })
spyOn(ScrollSpy.prototype, 'constructor')
expect(ScrollSpy.prototype.constructor).not.toHaveBeenCalledWith(div, { offset: 15 })

const scrollspy = ScrollSpy.getInstance(div)
expect(scrollspy).toBeDefined()
expect(scrollspy._config.offset).toBe(15)
})

it('should not re create a scrollspy', () => {
fixtureEl.innerHTML = '<div></div>'

Expand Down