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Synthetic click events and event dispatch #3974

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Oct 20, 2016
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Synthetic click events and event dispatch #3974

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119 changes: 119 additions & 0 deletions dom/events/Event-dispatch-click.html
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Original file line number Diff line number Diff line change
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<!doctype html>
<title>Synthetic click event "magic"</title>
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
<div id=log></div>
<div id=dump style=display:none></div>
<script>
var dump = document.getElementById("dump")

async_test(function(t) {
var input = document.createElement("input")
input.type = "checkbox"
dump.appendChild(input)
input.onclick = t.step_func_done(function() {
assert_true(input.checked)
})
input.click()
}, "basic with click()")
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Please add a blank line between tests


async_test(function(t) {
var input = document.createElement("input")
input.type = "checkbox"
dump.appendChild(input)
input.onclick = t.step_func_done(function() {
assert_true(input.checked)
})
input.dispatchEvent(new MouseEvent("click", {bubbles:true})) // equivalent to the above
}, "basic with dispatchEvent()")

async_test(function(t) {
var input = document.createElement("input")
input.type = "checkbox"
dump.appendChild(input)
input.onclick = t.step_func_done(function() {
assert_false(input.checked)
})
input.dispatchEvent(new Event("click", {bubbles:true})) // no MouseEvent
}, "basic with wrong event class")

async_test(function(t) {
var input = document.createElement("input")
input.type = "checkbox"
dump.appendChild(input)
var child = input.appendChild(new Text("does not matter"))
child.dispatchEvent(new MouseEvent("click")) // does not bubble
assert_false(input.checked)
t.done()
}, "look at parents only when event bubbles")

async_test(function(t) {
var input = document.createElement("input")
input.type = "checkbox"
dump.appendChild(input)
input.onclick = t.step_func_done(function() {
assert_true(input.checked)
})
var child = input.appendChild(new Text("does not matter"))
child.dispatchEvent(new MouseEvent("click", {bubbles:true}))
}, "look at parents when event bubbles")

async_test(function(t) {
var input = document.createElement("input")
input.type = "checkbox"
dump.appendChild(input)
input.onclick = t.step_func(function() {
assert_false(input.checked, "input pre-click must not be triggered")
})
var child = input.appendChild(document.createElement("input"))
child.type = "checkbox"
child.onclick = t.step_func(function() {
assert_true(input.checked, "child pre-click must be triggered")
})
child.dispatchEvent(new MouseEvent("click", {bubbles:true}))
t.done()
}, "pick the first with activation behavior <input type=checkbox>")

var globalCounter = 0 // sorry
async_test(function(t) { // as above with <a>
var i = 0
var link = document.createElement("a")
link.href = "javascript:globalCounter--" // must not be triggered
dump.appendChild(link)
var child = link.appendChild(document.createElement("a"))
child.href = "javascript:globalCounter++"
child.dispatchEvent(new MouseEvent("click", {bubbles:true}))
assert_equals(globalCounter, 1)
t.done()
}, "pick the first with activation behavior <a href>")

async_test(function(t) {
var input = document.createElement("input")
input.type = "checkbox"
dump.appendChild(input)
var clickEvent = new MouseEvent("click")
input.onchange = t.step_func_done(function() {
assert_false(clickEvent.defaultPrevented)
assert_equals(clickEvent.eventPhase, 0)
assert_equals(clickEvent.currentTarget, null)
assert_equals(clickEvent.target, input)
assert_equals(clickEvent.composedPath().length, 0)
})
input.dispatchEvent(clickEvent)
}, "event state during post-click handling")

async_test(function(t) {
var input = document.createElement("input")
input.type = "checkbox"
dump.appendChild(input)
var clickEvent = new MouseEvent("click")
var finalTarget = document.createElement("doesnotmatter")
finalTarget.onclick = t.step_func_done(function() {
assert_equals(clickEvent.target, finalTarget)
})
input.onchange = t.step_func(function() {
finalTarget.dispatchEvent(clickEvent)
})
input.dispatchEvent(clickEvent)
}, "redispatch during post-click handling")
</script>