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Fix event path iteration #686

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Mar 1, 2019
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Fix event path iteration #686

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Editorial: event's patch consists of structs
annevk Sep 6, 2018
7aaff50
Fix event path iteration
annevk Sep 6, 2018
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77 changes: 41 additions & 36 deletions dom.bs
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Original file line number Diff line number Diff line change
Expand Up @@ -1306,43 +1306,47 @@ for discussion).
<li><p>Set <var>slot-in-closed-tree</var> to false.
</ol>

<li><p>Let <var>clearTargetsTuple</var> be the last tuple in <var>event</var>'s
<li><p>Let <var>clearTargetsStruct</var> be the last struct in <var>event</var>'s
<a for=Event>path</a> whose <a for=Event/path>target</a> is non-null.

<li><p>Let <var>clearTargets</var> be true if <var>clearTargetsTuple</var>'s
<a for=Event/path>target</a>, <var>clearTargetsTuple</var>'s <a for=Event/path>relatedTarget</a>,
or an {{EventTarget}} object in <var>clearTargetsTuple</var>'s
<a for=Event/path>touch target list</a> is a <a for=/>node</a> and its <a for=tree>root</a> is a
<a for=/>shadow root</a>, and false otherwise.

<li><p>Set <var>event</var>'s {{Event/eventPhase}} attribute to {{Event/CAPTURING_PHASE}}.
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As far as I can tell "legacy-pre-activation behavior" cannot trigger side effects so setting this later is not observable.

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Actually, it looks like we fire change event on radio buttons & checkboxes so the event phase change is observable. Gecko follows the current spec and WebKit & Blink uses the new behavior.

https://gist.github.com/rniwa/6c502dca3e16d5816db7958ce7bab4d7

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Thanks, we should add that test to the test suite. None seems like a reasonable phase to me given that traversal hasn't started yet, WDYT @smaug----?

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@rniwa rniwa Sep 7, 2018 •
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Agreed that none seems more reasonable than capturing given the event dispatching hasn't even started yet.

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From API user's point of view Gecko's behavior makes more sense, since for them the event dispatch clearly has started already once dispatchEvent is called.

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I disagree. Just because we're in dispatchEvent, doesn't mean eventPhase needs to be something other than "none".

<li><p>Let <var>clearTargets</var> be true if <var>clearTargetsStruct</var>'s
<a for=Event/path>target</a>, <var>clearTargetsStruct</var>'s
<a for=Event/path>relatedTarget</a>, or an {{EventTarget}} object in
<var>clearTargetsStruct</var>'s <a for=Event/path>touch target list</a> is a <a for=/>node</a>
and its <a for=tree>root</a> is a <a for=/>shadow root</a>, and false otherwise.

<li><p>If <var>activationTarget</var> is non-null and <var>activationTarget</var> has
<a for=EventTarget>legacy-pre-activation behavior</a>, then run <var>activationTarget</var>'s
<a for=EventTarget>legacy-pre-activation behavior</a>.

<li>
<p>For each <var>tuple</var> in <var>event</var>'s <a for=Event>path</a>, in reverse order:
<p><a for=list>For each</a> <var>struct</var> in <var>event</var>'s <a for=Event>path</a>, in
reverse order:

<ol>
<li><p>If <var>tuple</var>'s <a for=Event/path>target</a> is null, then <a>invoke</a> with
<var>tuple</var>, <var>event</var>, and <var>legacyOutputDidListenersThrowFlag</var> if given.
<li><p>If <var>struct</var>'s <a for=Event/path>target</a> is non-null, then set
<var>event</var>'s {{Event/eventPhase}} attribute to {{Event/AT_TARGET}}.

<li><p>Otherwise, set <var>event</var>'s {{Event/eventPhase}} attribute to
{{Event/CAPTURING_PHASE}}.

<li><p><a>Invoke</a> with <var>struct</var>, <var>event</var>, "<code>capturing</code>", and
<var>legacyOutputDidListenersThrowFlag</var> if given.
</ol>

<li>
<p>For each <var>tuple</var> in <var>event</var>'s <a for=Event>path</a>, in order:
<p>If <var>event</var>'s {{Event/bubbles}} attribute is true, then <a for=list>for each</a>
<var>struct</var> in <var>event</var>'s <a for=Event>path</a>:

<ol>
<li><p>If <var>tuple</var>'s <a for=Event/path>target</a> is non-null, then set
<li><p>If <var>struct</var>'s <a for=Event/path>target</a> is non-null, then set
<var>event</var>'s {{Event/eventPhase}} attribute to {{Event/AT_TARGET}}.

<li><p>Otherwise, set <var>event</var>'s {{Event/eventPhase}} attribute to
{{Event/BUBBLING_PHASE}}.

<li><p>If either <var>event</var>'s {{Event/eventPhase}} attribute is {{Event/BUBBLING_PHASE}}
and <var>event</var>'s {{Event/bubbles}} attribute is true or <var>event</var>'s
{{Event/eventPhase}} attribute is {{Event/AT_TARGET}}, then <a>invoke</a> with
<var>tuple</var>, <var>event</var>, and <var>legacyOutputDidListenersThrowFlag</var> if given.
<li><p><a>Invoke</a> with <var>struct</var>, <var>event</var>, "<code>bubbling</code>", and
<var>legacyOutputDidListenersThrowFlag</var> if given.
</ol>
</ol>

Expand Down Expand Up @@ -1405,23 +1409,24 @@ for discussion).
<a for=Event/path>slot-in-closed-tree</a> is <var>slot-in-closed-tree</var>.
</ol>

<p>To <dfn noexport id=concept-event-listener-invoke>invoke</dfn>, given a <var>tuple</var>,
<var>event</var>, and an optional <var>legacyOutputDidListenersThrowFlag</var>, run these steps:
<p>To <dfn noexport id=concept-event-listener-invoke>invoke</dfn>, given a <var>struct</var>,
<var>event</var>, <var>phase</var>, and an optional <var>legacyOutputDidListenersThrowFlag</var>,
run these steps:

<ol>
<li><p>Set <var>event</var>'s <a for=Event>target</a> to the <a for=Event/path>target</a> of the
last tuple in <var>event</var>'s <a for=Event>path</a>, that is either <var>tuple</var> or
preceding <var>tuple</var>, whose <a for=Event/path>target</a> is non-null.
last struct in <var>event</var>'s <a for=Event>path</a>, that is either <var>struct</var> or
preceding <var>struct</var>, whose <a for=Event/path>target</a> is non-null.

<li><p>Set <var>event</var>'s <a for=Event>relatedTarget</a> to <var>tuple</var>'s
<li><p>Set <var>event</var>'s <a for=Event>relatedTarget</a> to <var>struct</var>'s
<a for=Event/path>relatedTarget</a>.

<li><p>Set <var>event</var>'s <a for=Event>touch target list</a> to <var>tuple</var>'s
<li><p>Set <var>event</var>'s <a for=Event>touch target list</a> to <var>struct</var>'s
<a for=Event/path>touch target list</a>.

<li><p>If <var>event</var>'s <a>stop propagation flag</a> is set, then return.

<li><p>Initialize <var>event</var>'s {{Event/currentTarget}} attribute to <var>tuple</var>'s
<li><p>Initialize <var>event</var>'s {{Event/currentTarget}} attribute to <var>struct</var>'s
<a for=Event/path>item</a>.

<li>
Expand All @@ -1432,7 +1437,7 @@ for discussion).
run. Note that removal still has an effect due to the <a for="event listener">removed</a> field.

<li><p>Let <var>found</var> be the result of running <a>inner invoke</a> with <var>event</var>,
<var>listeners</var>, and <var>legacyOutputDidListenersThrowFlag</var> if given.
<var>listeners</var>, <var>phase</var>, and <var>legacyOutputDidListenersThrowFlag</var> if given.

<li>
<p>If <var>found</var> is false and <var>event</var>'s {{Event/isTrusted}} attribute is true,
Expand All @@ -1456,15 +1461,15 @@ for discussion).
<tr><td>"<code>transitionend</code>"<td>"<code>webkitTransitionEnd</code>"
</table>

<li><p><a>Inner invoke</a> with <var>event</var>, <var>listeners</var>, and
<li><p><a>Inner invoke</a> with <var>event</var>, <var>listeners</var>, <var>phase</var>, and
<var>legacyOutputDidListenersThrowFlag</var> if given.

<li><p>Set <var>event</var>'s {{Event/type}} attribute value to <var>originalEventType</var>.
</ol>
</ol>

<p>To <dfn noexport id=concept-event-listener-inner-invoke>inner invoke</dfn>, given an
<var>event</var>, <var>listeners</var>, and an optional
<var>event</var>, <var>listeners</var>, <var>phase</var>, and an optional
<var>legacyOutputDidListenersThrowFlag</var>, run these steps:

<ol>
Expand All @@ -1480,13 +1485,11 @@ for discussion).

<li><p>Set <var>found</var> to true.

<li><p>If <var>event</var>'s {{Event/eventPhase}} attribute value is {{Event/CAPTURING_PHASE}}
and <var>listener</var>'s <a for="event listener">capture</a> is false, then
<a for=iteration>continue</a>.
<li><p>If <var>phase</var> is "<code>capturing</code>" and <var>listener</var>'s
<a for="event listener">capture</a> is false, then <a for=iteration>continue</a>.

<li><p>If <var>event</var>'s {{Event/eventPhase}} attribute value is {{Event/BUBBLING_PHASE}} and
<var>listener</var>'s <a for="event listener">capture</a> is true, then
<a for=iteration>continue</a>.
<li><p>If <var>phase</var> is "<code>bubbling</code>" and <var>listener</var>'s
<a for="event listener">capture</a> is true, then <a for=iteration>continue</a>.

<li><p>If <var>listener</var>'s <a for="event listener">once</a> is true, then
<a for=list>remove</a> <var>listener</var> from <var>event</var>'s {{Event/currentTarget}}
Expand All @@ -1505,7 +1508,7 @@ for discussion).
<ol>
<li><p>Set <var>currentEvent</var> to <var>global</var>'s <a for=Window>current event</a>.

<li><p>If <var>tuple</var>'s <a for=Event/path>item-in-shadow-tree</a> is false, then set
<li><p>If <var>struct</var>'s <a for=Event/path>item-in-shadow-tree</a> is false, then set
<var>global</var>'s <a for=Window>current event</a> to <var>event</var>.
</ol>

Expand Down Expand Up @@ -5685,8 +5688,9 @@ or "<code>closed</code>").</p>

<p>A <a for=/>shadow root</a>'s <a>get the parent</a> algorithm, given an <var>event</var>, returns
null if <var>event</var>'s <a>composed flag</a> is unset and <a for=/>shadow root</a> is the
<a for=tree>root</a> of <var>event</var>'s <a for=Event>path</a>'s first tuple's <b>item</b>, and
<a for=/>shadow root</a>'s <a for=DocumentFragment>host</a> otherwise.
<a for=tree>root</a> of <var>event</var>'s <a for=Event>path</a>'s first struct's
<a for=Event/path>item</a>, and <a for=/>shadow root</a>'s <a for=DocumentFragment>host</a>
otherwise.

<p>The <dfn attribute for=ShadowRoot><code>mode</code></dfn> attribute's getter must return the
<a>context object</a>'s <a for=ShadowRoot>mode</a>.</p>
Expand Down Expand Up @@ -9982,6 +9986,7 @@ Mark Miller,
Martijn van der Ven,
Mats Palmgren,
Mounir Lamouri,
Michael Stramel,
Michael™ Smith,
Mike Champion,
Mike Taylor,
Expand Down