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buttons plugin : avoid multiple change event trigger #31000

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merged 8 commits into from Oct 2, 2020
Merged

buttons plugin : avoid multiple change event trigger #31000

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c3db204
avoid multiple change event trigger :
Lausselloic Jun 10, 2020
b2033e2
Merge branch 'v4-dev' into buttons_prevent_multiple_onchange
XhmikosR Sep 16, 2020
a01b2bf
replace `avoidTriggerChange` parameter by a css class `CLASS_NAME_CHA…
Lausselloic Oct 1, 2020
543c53f
Merge branch 'v4-dev' into buttons_prevent_multiple_onchange
Lausselloic Oct 1, 2020
b2b3607
fix linting error and upgrade bundlesize
Lausselloic Oct 1, 2020
4162e58
fix latest lint error
Lausselloic Oct 1, 2020
1632d3c
Revert "replace `avoidTriggerChange` parameter by a css class `CLASS_…
Lausselloic Oct 2, 2020
8a37b3b
Update .bundlewatch.config.json
XhmikosR Oct 2, 2020
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4 changes: 2 additions & 2 deletions .bundlewatch.config.json
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Expand Up @@ -26,15 +26,15 @@
},
{
"path": "./dist/js/bootstrap.bundle.js",
"maxSize": "47.50 kB"
"maxSize": "47.5 kB"
},
{
"path": "./dist/js/bootstrap.bundle.min.js",
"maxSize": "21.5 kB"
},
{
"path": "./dist/js/bootstrap.js",
"maxSize": "25 kB"
"maxSize": "25.5 kB"
},
{
"path": "./dist/js/bootstrap.min.js",
Expand Down
13 changes: 9 additions & 4 deletions js/src/button.js
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Expand Up @@ -46,6 +46,7 @@ const EVENT_LOAD_DATA_API = `load${EVENT_KEY}${DATA_API_KEY}`
class Button {
constructor(element) {
this._element = element
this.shouldAvoidTriggerChange = false
}

// Getters
Expand Down Expand Up @@ -83,7 +84,9 @@ class Button {
input.checked = !this._element.classList.contains(CLASS_NAME_ACTIVE)
}

$(input).trigger('change')
if (!this.shouldAvoidTriggerChange) {
$(input).trigger('change')
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}
}

input.focus()
Expand All @@ -109,7 +112,7 @@ class Button {

// Static

static _jQueryInterface(config) {
static _jQueryInterface(config, avoidTriggerChange) {
return this.each(function () {
const $element = $(this)
let data = $element.data(DATA_KEY)
Expand All @@ -119,6 +122,8 @@ class Button {
$element.data(DATA_KEY, data)
}

data.shouldAvoidTriggerChange = avoidTriggerChange

if (config === 'toggle') {
data[config]()
}
Expand Down Expand Up @@ -151,8 +156,8 @@ $(document)
return
}

if (initialButton.tagName !== 'LABEL' || inputBtn && inputBtn.type !== 'checkbox') {
Button._jQueryInterface.call($(button), 'toggle')
if (initialButton.tagName === 'INPUT' || button.tagName !== 'LABEL') {
Button._jQueryInterface.call($(button), 'toggle', initialButton.tagName === 'INPUT')
}
}
})
Expand Down
26 changes: 26 additions & 0 deletions js/tests/unit/button.js
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Expand Up @@ -180,6 +180,32 @@ $(function () {
$group.find('label').trigger('click')
})

QUnit.test('should trigger label change event only once', function (assert) {
assert.expect(1)
var done = assert.async()
var countChangeEvent = 0

var groupHTML = '<div class="btn-group" data-toggle="buttons">' +
'<label class="btn btn-primary">' +
'<input type="checkbox"><span class="check">✓</span> <i class="far fa-clipboard"></i> <span class="d-none d-lg-inline">checkbox</span>' +
'</label>' +
'</div>'
var $group = $(groupHTML).appendTo('#qunit-fixture')

var $btn = $group.children().eq(0)

$group.find('label').on('change', function () {
countChangeEvent++
})

setTimeout(function () {
assert.ok(countChangeEvent === 1, 'onchange event fired only once')
done()
}, 5)

$btn[0].click()
})

QUnit.test('should check for closest matching toggle', function (assert) {
assert.expect(18)
var groupHTML = '<div class="btn-group" data-toggle="buttons">' +
Expand Down