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Triggerspec delay unique #2893

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Triggerspec delay unique #2893

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86f0e94
Adjust hx-trigger's changed modifier for multiple sources
jsonn Sep 10, 2024
1dfbe66
Add test case for separate triggers with changed modifier
jsonn Sep 11, 2024
b19cb43
Ensure that each trigger spec has independent delay slots
jsonn Sep 11, 2024
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73 changes: 54 additions & 19 deletions src/htmx.js
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Original file line number Diff line number Diff line change
Expand Up @@ -693,9 +693,10 @@ var htmx = (function() {
* @property {ListenerInfo[]} [listenerInfos]
* @property {boolean} [cancelled]
* @property {boolean} [triggeredOnce]
* @property {number} [delayed]
* @property {WeakMap<HtmxTriggerSpecification,number>} [delayed]
* @property {number|null} [throttle]
* @property {string} [lastValue]
* @property {WeakMap<HtmxTriggerSpecification,WeakMap<EventTarget,string>>} [lastValue]
* @property {WeakMap<HtmxTriggerSpecification,Map<EventTarget,string>>} [pendingValue]
* @property {boolean} [loaded]
* @property {string} [path]
* @property {string} [verb]
Expand Down Expand Up @@ -2405,12 +2406,25 @@ var htmx = (function() {
} else {
eltsToListenOn = [elt]
}
if (triggerSpec.delay > 0) {
if (!('delayed' in elementData)) {
elementData.delayed = new WeakMap()
}
if (!('pendingValue' in elementData)) {
elementData.pendingValue = new WeakMap()
}
}
// store the initial values of the elements, so we can tell if they change
if (triggerSpec.changed) {
if (!('lastValue' in elementData)) {
elementData.lastValue = new WeakMap()
}
eltsToListenOn.forEach(function(eltToListenOn) {
const eltToListenOnData = getInternalData(eltToListenOn)
if (!elementData.lastValue.has(triggerSpec)) {
elementData.lastValue.set(triggerSpec, new WeakMap())
}
// @ts-ignore value will be undefined for non-input elements, which is fine
eltToListenOnData.lastValue = eltToListenOn.value
elementData.lastValue.get(triggerSpec).set(eltToListenOn, eltToListenOn.value)
})
}
forEach(eltsToListenOn, function(eltToListenOn) {
Expand Down Expand Up @@ -2452,16 +2466,26 @@ var htmx = (function() {
}
}
if (triggerSpec.changed) {
const eltToListenOnData = getInternalData(eltToListenOn)
const node = event.target
// @ts-ignore value will be undefined for non-input elements, which is fine
const value = eltToListenOn.value
if (eltToListenOnData.lastValue === value) {
return
const value = node.value
const lastValue = elementData.lastValue.get(triggerSpec)
if (triggerSpec.delay > 0) {
if (!elementData.pendingValue.has(triggerSpec)) {
elementData.pendingValue.set(triggerSpec, new Map())
}
const pendingValue = elementData.pendingValue.get(triggerSpec)
pendingValue.set(node, value)
} else {
if (lastValue.has(node) && lastValue.get(node) === value) {
return
}
lastValue.set(node, value)
}
eltToListenOnData.lastValue = value
}
if (elementData.delayed) {
clearTimeout(elementData.delayed)
if (elementData.delayed && elementData.delayed.has(triggerSpec)) {
clearTimeout(elementData.delayed.get(triggerSpec))
elementData.delayed.delete(triggerSpec)
}
if (elementData.throttle) {
return
Expand All @@ -2476,10 +2500,27 @@ var htmx = (function() {
}, triggerSpec.throttle)
}
} else if (triggerSpec.delay > 0) {
elementData.delayed = getWindow().setTimeout(function() {
elementData.delayed.set(triggerSpec, getWindow().setTimeout(function() {
elementData.delayed.delete(triggerSpec)
if (triggerSpec.changed) {
const lastValue = elementData.lastValue.get(triggerSpec) || new WeakMap()
const pendingValue = elementData.pendingValue.get(triggerSpec) || new Map()
elementData.pendingValue.set(triggerSpec, new Map())

let changed = false
pendingValue.forEach((new_value, new_node) => {
if (lastValue.get(new_node) !== new_value) {
changed = true
lastValue.set(new_node, new_value)
}
})
if (!changed) {
return
}
}
triggerEvent(elt, 'htmx:trigger')
handler(elt, evt)
}, triggerSpec.delay)
}, triggerSpec.delay))
} else {
triggerEvent(elt, 'htmx:trigger')
handler(elt, evt)
Expand Down Expand Up @@ -2836,12 +2877,6 @@ var htmx = (function() {

triggerEvent(elt, 'htmx:beforeProcessNode')

// @ts-ignore value will be undefined for non-input elements, which is fine
if (elt.value) {
// @ts-ignore
nodeData.lastValue = elt.value
}

const triggerSpecs = getTriggerSpecs(elt)
const hasExplicitHttpAction = processVerbs(elt, nodeData, triggerSpecs)

Expand Down
141 changes: 141 additions & 0 deletions test/attributes/hx-trigger.js
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Original file line number Diff line number Diff line change
Expand Up @@ -64,6 +64,7 @@ describe('hx-trigger attribute', function() {
div.innerHTML.should.equal('Requests: 1')
})

// This test and the next one should be kept in sync.
it('changed modifier works along from clause with two inputs', function() {
var requests = 0
this.server.respondWith('GET', '/test', function(xhr) {
Expand Down Expand Up @@ -106,6 +107,92 @@ describe('hx-trigger attribute', function() {
div.innerHTML.should.equal('Requests: 2')
})

// This test and the previous one should be kept in sync.
it('changed modifier counts each triggerspec separately', function() {
var requests = 0
this.server.respondWith('GET', '/test', function(xhr) {
requests++
xhr.respond(200, {}, 'Requests: ' + requests)
})
var input1 = make('<input type="text"/>')
var input2 = make('<input type="text"/>')
make('<div hx-trigger="click changed from:input" hx-target="#d1" hx-get="/test"></div>')
make('<div hx-trigger="click changed from:input" hx-target="#d1" hx-get="/test"></div>')
var div = make('<div id="d1"></div>')

input1.click()
this.server.respond()
div.innerHTML.should.equal('')
input2.click()
this.server.respond()
div.innerHTML.should.equal('')

input1.value = 'bar'
input2.click()
this.server.respond()
div.innerHTML.should.equal('')
input1.click()
this.server.respond()
div.innerHTML.should.equal('Requests: 2')

input1.click()
this.server.respond()
div.innerHTML.should.equal('Requests: 2')
input2.click()
this.server.respond()
div.innerHTML.should.equal('Requests: 2')

input2.value = 'foo'
input1.click()
this.server.respond()
div.innerHTML.should.equal('Requests: 2')
input2.click()
this.server.respond()
div.innerHTML.should.equal('Requests: 4')
})

it('separate changed modifier works along from clause with two inputs', function() {
var requests = 0
this.server.respondWith('GET', '/test', function(xhr) {
requests++
xhr.respond(200, {}, 'Requests: ' + requests)
})
var input1 = make('<input type="text"/>')
var input2 = make('<input type="text"/>')
make('<div hx-trigger="click changed from:input:nth-child(1), click changed from:input:nth-child(2)" hx-target="#d1" hx-get="/test"></div>')
var div = make('<div id="d1"></div>')

input1.click()
this.server.respond()
div.innerHTML.should.equal('')
input2.click()
this.server.respond()
div.innerHTML.should.equal('')

input1.value = 'bar'
input2.click()
this.server.respond()
div.innerHTML.should.equal('')
input1.click()
this.server.respond()
div.innerHTML.should.equal('Requests: 1')

input1.click()
this.server.respond()
div.innerHTML.should.equal('Requests: 1')
input2.click()
this.server.respond()
div.innerHTML.should.equal('Requests: 1')

input2.value = 'foo'
input1.click()
this.server.respond()
div.innerHTML.should.equal('Requests: 1')
input2.click()
this.server.respond()
div.innerHTML.should.equal('Requests: 2')
})

it('once modifier works', function() {
var requests = 0
this.server.respondWith('GET', '/test', function(xhr) {
Expand Down Expand Up @@ -723,6 +810,60 @@ describe('hx-trigger attribute', function() {
}, 50)
})

it('two delays on the same node are independent', function(done) {
var requests = 0
var server = this.server
this.server.respondWith('GET', '/test', function(xhr) {
requests++
xhr.respond(200, {}, 'Requests: ' + requests)
})
this.server.respondWith('GET', '/bar', 'bar')
var button = make('<button></button>')
var div = make("<div hx-trigger='click delay:10ms,click delay:50ms from:button' hx-get='/test'></div>")

div.click()
button.click()
this.server.respond()
div.innerText.should.equal('')

setTimeout(function() {
server.respond()
div.innerText.should.equal('Requests: 1')

setTimeout(function() {
server.respond()
div.innerText.should.equal('Requests: 2')

done()
}, 50)
}, 20)
})

it('delay for multiple nodes are shared', function(done) {
var requests = 0
var server = this.server
this.server.respondWith('GET', '/test', function(xhr) {
requests++
xhr.respond(200, {}, 'Requests: ' + requests)
})
this.server.respondWith('GET', '/bar', 'bar')
var button1 = make('<button></button>')
var button2 = make('<button></button>')
var div = make("<div hx-trigger='click delay:10ms from:button' hx-get='/test'></div>")

button1.click()
button2.click()
this.server.respond()
div.innerText.should.equal('')

setTimeout(function() {
server.respond()
div.innerText.should.equal('Requests: 1')

done()
}, 20)
})

it('A 0 delay does not delay the request', function(done) {
var requests = 0
this.server.respondWith('GET', '/test', function(xhr) {
Expand Down