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Snapshot fallback base URL for about:-schemed Documents #9464

Merged
merged 16 commits into from
Jul 13, 2023
Merged
121 changes: 90 additions & 31 deletions source
Original file line number Diff line number Diff line change
Expand Up @@ -6944,24 +6944,24 @@ a.setAttribute('href', 'https://example.com/'); // change the content attribute
<span>URL record</span> obtained by running these steps:</p>

<ol>
<li><p>If <var>document</var> is <span>an <code>iframe</code> <code
data-x="attr-iframe-srcdoc">srcdoc</code> document</span>, then return <var>document</var>'s
<span data-x="doc-container-document">container document</span>'s <span>document base
URL</span>.</p></li>

<li>
<!-- https://www.hixie.ch/tests/adhoc/html/navigation/javascript-url/ -->
<p>If <var>document</var> is <span data-x="an iframe srcdoc document">an <code>iframe</code>
<code data-x="attr-iframe-srcdoc">srcdoc</code> document</span>, then:</p>

<!-- this should be tested in the case of a browsing context that was navigated to about:blank
after having been elsewhere, as opposed to the about:blank used at the time of the browsing
context's creation. -->
<ol>
<li><p><span>Assert</span>: <var>document</var>'s <span
data-x="concept-document-about-base-url">about base URL</span> is non-null.</p></li>
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<p>If <var>document</var>'s <span data-x="concept-document-url">URL</span> is
<code>about:blank</code>, and <var>document</var>'s <span data-x="concept-document-bc">browsing
context</span>'s <span>creator base URL</span> is non-null, then return that <span>creator base
URL</span>.</p>
<li><p>Return <var>document</var>'s <span data-x="concept-document-about-base-url">about base
URL</span>.</p></li>
</ol>
</li>

<li><p>If <var>document</var>'s <span data-x="concept-document-url">URL</span> is
<code>about:blank</code> and <var>document</var>'s <span
data-x="concept-document-about-base-url">about base URL</span> is non-null, then return
<var>document</var>'s <span data-x="concept-document-about-base-url">about base URL</span>.</p></li>

<!-- https://www.hixie.ch/tests/adhoc/dom/level0/history/pushState/001/ -->

<li><p>Return <var>document</var>'s <span data-x="concept-document-url">URL</span>.</p></li>
Expand Down Expand Up @@ -10585,6 +10585,12 @@ partial interface <dfn id="document" data-lt="">Document</dfn> {
<p>Each <code>Document</code> has a <dfn data-x="concept-document-navigation-id">navigation
id</dfn>, which is a <span>navigation ID</span> or null, initially null.</p>

<p>Each <code>Document</code> has an <dfn data-x="concept-document-about-base-url">about base
URL</dfn>, which is a <span>URL</span> or null, initially null.</p>

<p class="note">This is only populated for "<code data-x="">about:</code>"-schemed
<code>Document</code>s.</p>

<h4>The <code>DocumentOrShadowRoot</code> interface</h4>

<p><cite>DOM</cite> defines the <code data-x="DOM
Expand Down Expand Up @@ -93189,6 +93195,10 @@ interface <dfn interface>BeforeUnloadEvent</dfn> : <span>Event</span> {

<dt><span data-x="document-state-nav-target-name">navigable target name</span></dt>
<dd><var>targetName</var></dd>

<dt><span data-x="document-state-about-base-url">about base URL</span></dt>
<dd><var>document</var>'s <span data-x="concept-document-about-base-url">about base
URL</span></dd>
</dl>
</li>

Expand Down Expand Up @@ -93351,6 +93361,10 @@ interface <dfn interface>BeforeUnloadEvent</dfn> : <span>Event</span> {

<dt><span data-x="document-state-nav-target-name">navigable target name</span></dt>
<dd><var>targetName</var></dd>

<dt><span data-x="document-state-about-base-url">about base URL</span></dt>
<dd><var>document</var>'s <span data-x="concept-document-about-base-url">about base
URL</span></dd>
</dl>
</li>

Expand Down Expand Up @@ -94012,9 +94026,6 @@ interface <dfn interface>BeforeUnloadEvent</dfn> : <span>Event</span> {
<li><p>An <dfn data-x="browsing-context-initial-url">initial URL</dfn>, a <span>URL</span> or
null, initially null.</p></li>

<li><p>A <dfn>creator base URL</dfn>, null or an algorithm that returns a <span>URL</span>,
initially null.</p></li>

<li><p>A <dfn data-x="virtual-browsing-context-group-id">virtual browsing context group ID</dfn>
integer, initially 0. This is used by <span data-x="coop-struct-report-only-value">cross-origin
opener policy reporting</span>, to keep track of the browsing context group switches that would
Expand Down Expand Up @@ -94088,15 +94099,17 @@ interface <dfn interface>BeforeUnloadEvent</dfn> : <span>Event</span> {

<li><p>Let <var>creatorOrigin</var> be null.</p>

<li><p>Let <var>creatorBaseURL</var> be null.</p></li>

<li id="creator-browsing-context">
<p>If <var>creator</var> is non-null, then:</p>

<ol>
<li><p>Set <var>creatorOrigin</var> to <var>creator</var>'s <span
data-x="concept-document-origin">origin</span>.</p></li>

<li><p>Set <var>browsingContext</var>'s <span>creator base URL</span> to an algorithm which
returns <var>creator</var>'s <span data-x="document base URL">base URL</span>.</p></li>
<li><p>Set <var>creatorBaseURL</var> to <var>creator</var>'s <span>document base
URL</span>.</p></li>

<li><p>Set <var>browsingContext</var>'s <span
data-x="virtual-browsing-context-group-id">virtual browsing context group ID</span> to
Expand All @@ -94109,10 +94122,6 @@ interface <dfn interface>BeforeUnloadEvent</dfn> : <span>Event</span> {
<li><p>Let <var>sandboxFlags</var> be the result of <span>determining the creation sandboxing
flags</span> given <var>browsingContext</var> and <var>embedder</var>.</p></li>

<!--
This step does not need to use |embedder|, because determining the origin only consults the
containerOrigin when the url argument is about:srcdoc. However, here we always pass about:blank.
-->
<li id="about-blank-origin"><p>Let <var>origin</var> be the result of <span>determining the
origin</span> given <code>about:blank</code>, <var>sandboxFlags</var>, <var>creatorOrigin</var>,
and null.</p></li>
Expand Down Expand Up @@ -94186,6 +94195,9 @@ interface <dfn interface>BeforeUnloadEvent</dfn> : <span>Event</span> {

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<dt><span>is initial <code>about:blank</code></span></dt>
<dd>true</dd>

<dt><span data-x="concept-document-about-base-URL">about base URL</span></dt>
<dd><var>creatorBaseURL</var></dd>
</dl>
</li>

Expand Down Expand Up @@ -94865,6 +94877,16 @@ interface <dfn interface>BeforeUnloadEvent</dfn> : <span>Event</span> {
data-x="document-state-nav-target-name">navigable target name</span> is cleared.</p>
</li>

<li>
<p>An <dfn data-x="document-state-about-base-url">about base URL</dfn>, which is a
<span>URL</span> or null, initially null.</p>

<p class="note">This will be populated only for "<code data-x="">about:</code>"-schemed
<code>Document</code>s and will be the <span>fallback base URL</span> for those
<code>Document</code>s. It is a snapshot of the initiator <code>Document</code>'s <span>document
base URL</span>.</p>
</li>

<li><p><dfn data-x="document-state-nested-histories">Nested histories</dfn>, a <span>list</span>
of <span data-x="nested history">nested histories</span>, initially an empty
<span>list</span>.</p></li>
Expand Down Expand Up @@ -95587,6 +95609,10 @@ location.href = '#foo';</code></pre>
<dt><dfn data-x="navigation-params-nav-timing-type">navigation timing type</dfn></dt>
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<dd>a <code>NavigationTimingType</code> used for <span data-x="create the navigation timing
entry">creating the navigation timing entry</span> for the new <code>Document</code></dd>

<dt><dfn data-x="navigation-params-about-base-url">about base URL</dfn></dt>
<dd>a <span>URL</span> or null used to populate the new <code>Document</code>'s <span
data-x="concept-document-about-base-url">about base URL</span></dd>
</dl>

<p class="note">Once a <span>navigation params</span> struct is created, this standard does not
Expand Down Expand Up @@ -95721,6 +95747,9 @@ location.href = '#foo';</code></pre>
<li><p>Let <var>initiatorOriginSnapshot</var> be <var>sourceDocument</var>'s <span
data-x="concept-document-origin">origin</span>.</p></li>

<li><p>Let <var>initiatorBaseURLSnapshot</var> be <var>sourceDocument</var>'s <span>document base
URL</span>.</p></li>

<li id="sandboxLinks">
<p>If <var>sourceDocument</var>'s <span>node navigable</span> is not <span>allowed by
sandboxing to navigate</span> <var>navigable</var> given and <var>sourceSnapshotParams</var>,
Expand Down Expand Up @@ -95988,16 +96017,17 @@ location.href = '#foo';</code></pre>
the document state is finalized.</p>
</li>

<li><p>If <var>url</var> is <code>about:blank</code>, then set <var>documentState</var>'s <span
data-x="document-state-origin">origin</span> to <var>documentState</var>'s <span
data-x="document-state-initiator-origin">initiator origin</span>.</p></li>
<li>
<p>If <var>url</var> is <code>about:blank</code> or <code>about:srcdoc</code>, then:</p>

<li><p>Otherwise, if <var>url</var> is <code>about:srcdoc</code>, then set
<var>documentState</var>'s <span
data-x="document-state-origin">origin</span> to
<var>navigable</var>'s <span data-x="nav-parent">parent</span>'s <span
data-x="nav-document">active document</span>'s <span
data-x="concept-document-origin">origin</span>.</p></li>
<ol>
<li><p>Set <var>documentState</var>'s <span data-x="document-state-origin">origin</span> to
<var>initiatorOriginSnapshot</var>.</p></li>

<li><p>Set <var>documentState</var>'s <span data-x="document-state-about-base-url">about base
URL</span> to <var>initiatorBaseURLSnapshot</var>.</p></li>
</ol>
</li>

<li><p>Let <var>historyEntry</var> be a new <span>session history entry</span>, with its <span
data-x="she-url">URL</span> set to <var>url</var> and its <span
Expand Down Expand Up @@ -96096,6 +96126,10 @@ location.href = '#foo';</code></pre>

<dt><span data-x="navigation-params-nav-timing-type">navigation timing type</span></dt>
<dd>"<code data-x="dom-navigationtimingtype-navigate">navigate</code>"</dd>

<dt><span data-x="navigation-params-about-base-url">about base URL</span></dt>
<dd><var>documentState</var>'s <span data-x="document-state-about-base-url">about base
URL</span></dd>
</dl>
</li>
</ol>
Expand Down Expand Up @@ -96306,6 +96340,10 @@ location.href = '#foo';</code></pre>
<dt><span data-x="document-state-initiator-origin">origin</span></dt>
<dd><var>initiatorOriginSnapshot</var></dd>

<dt><span data-x="document-state-about-base-url">about base URL</span></dt>
<dd><var>oldDocState</var>'s <span data-x="document-state-about-base-url">about base
URL</span></dd>

<dt><span data-x="document-state-resource">resource</span></dt>
<dd>null</dd>

Expand Down Expand Up @@ -96476,6 +96514,10 @@ location.href = '#foo';</code></pre>

<dt><span data-x="navigation-params-nav-timing-type">navigation timing type</span></dt>
<dd>"<code data-x="dom-navigationtimingtype-navigate">navigate</code>"</dd>

<dt><span data-x="navigation-params-about-base-url">about base URL</span></dt>
<dd><var>targetNavigable</var>'s <span data-x="nav-document">active document</span>'s <span
data-x="concept-document-about-base-url">about base URL</span></dd>
</dl>
</li>

Expand Down Expand Up @@ -97778,6 +97820,10 @@ location.href = '#foo';</code></pre>

<dt><span data-x="navigation-params-nav-timing-type">navigation timing type</span></dt>
<dd><var>navTimingType</var></dd>

<dt><span data-x="navigation-params-about-base-url">about base URL</span></dt>
<dd><var>entry</var>'s <span data-x="she-document-state">document state</span>'s <span
data-x="document-state-about-base-url">about base URL</span></dd>
</dl>
</li>
</ol>
Expand Down Expand Up @@ -98177,6 +98223,9 @@ location.href = '#foo';</code></pre>
<dt><span data-x="document-state-origin">origin</span></dt>
<dd><var>oldDocState</var>'s <span data-x="document-state-origin">origin</span></dd>

<dt><span data-x="document-state-about-base-url">about base URL</span></dt>
<dd><var>oldDocState</var>'s <span data-x="document-state-about-base-url">about base URL</span></dd>

<dt><span data-x="document-state-resource">resource</span></dt>
<dd><var>oldDocState</var>'s <span data-x="document-state-resource">resource</span></dd>

Expand Down Expand Up @@ -98398,6 +98447,10 @@ location.href = '#foo';</code></pre>

<dt><span data-x="navigation-params-nav-timing-type">navigation timing type</span></dt>
<dd><var>navTimingType</var></dd>

<dt><span data-x="navigation-params-about-base-url">about base URL</span></dt>
<dd><var>entry</var>'s <span data-x="she-document-state">document state</span>'s <span
data-x="document-state-about-base-url">about base URL</span></dd>
</dl>
</li>
</ol>
Expand Down Expand Up @@ -100030,6 +100083,9 @@ location.href = '#foo';</code></pre>

<dt><span>current document readiness</span></dt>
<dd>"<code data-x="">loading</code>"</dd>

<dt><span data-x="concept-document-about-base-url">about base URL</span></dt>
<dd><var>navigationParams</var>'s <span data-x="navigation-params-about-base-URL">about base URL</span></dd>
</dl>
</li>

Expand Down Expand Up @@ -100503,6 +100559,9 @@ new PaymentRequest(&hellip;); // Allowed to use

<dt><span data-x="navigation-params-nav-timing-type">navigation timing type</span></dt>
<dd><var>navTimingType</var></dd>

<dt><span data-x="navigation-params-about-base-url">about base URL</span></dt>
<dd>null</dd>
</dl>
</li>

Expand Down