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Remove outdated event handler section #495

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Apr 15, 2024
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Remove outdated event handler section #495

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33 changes: 2 additions & 31 deletions spec/index.bs
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Expand Up @@ -1115,6 +1115,8 @@ To <dfn abstract-op export>get Trusted Types-compliant attribute value</dfn> on

If the algorithm threw an error, rethrow the error.

Issue: This algorithm should account for event handler attributes. See https://github.com/w3c/trusted-types/issues/474

# Integrations # {#integrations}

<pre class="idl">
Expand Down Expand Up @@ -1242,37 +1244,6 @@ change step 8.4.3 as follows:

1. Perform <del>HostEnsureCanCompileStrings</del><ins>EnsureCSPDoesNotBlockStringCompilation</ins>(<var>realm</var>, « », <var>handler</var>,<del> false</del><ins>, <var>handler</var>, ~timer~, « », <var>handler</var></ins>). If this throws an exception, catch it, report the exception, and abort these steps.

### Enforcement in event handler content attributes ### {#enforcement-in-event-handler-content-attributes}

This document modifies the
[=attribute change steps=] for an [[HTML5#event-handler-content-attributes|event handler content attribute]].

At the beginning of step 5, insert the following steps:

1. Let |value| be the result of executing the
[$Get Trusted Type compliant string$] algorithm, with the following arguments:
* |value| as |input|,
* {{TrustedScript}} as |expectedType|,
* `'script'` as |sinkGroup|
* |sink| being the result of [=concatenating=] the list &laquo; <var ignore>element</var>'s [=Element/local name=], |localName| &raquo; with `"."` as a |separator|.

Note: For example, `document.createElement('div').onclick = value` will result in |sink| being `'div.onclick'`.

* <var ignore>eventTarget</var>'s [=relevant global object=] as |global|,

1. If the algorithm throws an error, abort these steps.

Note: This also applies to events in [[SVG2#EventAttributes]].

<div class="example" id="event-handlers-example">
<pre highlight=js>
// Content-Security-Policy: require-trusted-types-for 'script'

const img = document.createElement('img');
img.setAttribute('onerror', 'alert(1)'); // TypeError
</pre>
</div>

### HostEnsureCanCompileStrings ### {#host-ensure-can-compile-strings}

JavaScript contains an <span>implementation-defined</span> <a href="https://tc39.es/ecma262/#sec-hostensurecancompilestrings">HostEnsureCanCompileStrings</a>(<var>realm</var>, <ins><var>parameterStrings</var>,
Expand Down
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