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Specify the tokenizer for window.open's features argument
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This was specified in CSSOM View but the "noopener" feature did
not use the same tokenizer as the legacy features. Fixes whatwg#2474.

Also specify the aliases screenx, screeny, innerwidth, innerheight
for left, top, width, and height, respectively. Part of whatwg#2464.
Closes w3c/csswg-drafts#1128.

The tokenizer specified here closely follows Edge.
Chromium and WebKit are also very similar to Edge.
Difference from Edge: U+0000 does not end the string.
Difference from Chromium: U+0000 is not a separator.
Difference from WebKit/Chromium/Edge: U+000C is a separator.

For the input `width toolbar=450, height=450`,
Edge tokenizes like `width, toolbar=450, height=450` while
WebKit/Chromium like `width=450, height=450`.
The Edge behavior seems better.

Tests:
web-platform-tests/wpt#5306
web-platform-tests/wpt#5390
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@zcorpan @inikulin
zcorpan authored and inikulin committed May 9, 2017
1 parent 09343db commit c23de2f
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Original file line number Diff line number Diff line change
Expand Up @@ -2365,6 +2365,9 @@ a.setAttribute('href', 'https://example.com/'); // change the content attribute
<p>The following terms are defined in the WHATWG Infra standard: <ref spec=INFRA></p>

<ul class="brief">
<li>The general iteration terms <dfn data-x-href="https://infra.spec.whatwg.org/#iteration-while">while</dfn>,
<dfn data-x-href="https://infra.spec.whatwg.org/#iteration-continue">continue</dfn>, and
<dfn data-x-href="https://infra.spec.whatwg.org/#iteration-break">break</dfn>.</li>
<li><dfn data-x-href="https://infra.spec.whatwg.org/#code-point">code point</dfn> and its synonym
<dfn data-x-href="https://infra.spec.whatwg.org/#code-point">character</dfn></li>
<li><dfn data-x-href="https://infra.spec.whatwg.org/#surrogate">surrogate</dfn></li>
Expand Down Expand Up @@ -3535,7 +3538,7 @@ a.setAttribute('href', 'https://example.com/'); // change the content attribute
<li><dfn data-x-href="https://drafts.csswg.org/cssom-view/#scroll-to-the-beginning-of-the-document">Scroll to the beginning of the document</dfn></li>
<li>The <dfn data-x="event-resize" data-x-href="https://drafts.csswg.org/cssom-view/#eventdef-window-resize"><code>resize</code></dfn> event</li>
<li>The <dfn data-x="event-scroll" data-x-href="https://drafts.csswg.org/cssom-view/#eventdef-document-scroll"><code>scroll</code></dfn> event</li>
<li><dfn data-x="dom-open-features" data-x-href="https://drafts.csswg.org/cssom-view/#the-features-argument-to-the-open()-method">The <var>features</var> argument of <code data-x="dom-open">window.open</code></dfn>
<li><dfn data-x-href="https://drafts.csswg.org/cssom-view/#set-up-browsing-context-features">set up browsing context features</dfn></li>
</ul>

<p>The following features and terms are defined in the <cite>CSS Syntax</cite> specifications:
Expand Down Expand Up @@ -78559,8 +78562,8 @@ callback <dfn>FrameRequestCallback</dfn> = void (<span>DOMHighResTimeStamp</span

<p>Opens a window to show <var>url</var> (defaults to <code>about:blank</code>), and returns it.
The <var>target</var> argument gives the name of the new window. If a window exists with that
name already, it is reused. The <var data-x="dom-open-features">features</var> argument can be
used to influence the rendering of the new window.</p>
name already, it is reused. The <var>features</var> argument can be used to influence the
rendering of the new window.</p>

</dd>

Expand Down Expand Up @@ -78655,8 +78658,12 @@ callback <dfn>FrameRequestCallback</dfn> = void (<span>DOMHighResTimeStamp</span
indicating a preference for navigating a new <span>top-level browsing context</span>, then let
<var>new</var> be true. Otherwise, let it be false.</p></li>

<li><p>Interpret <var>features</var> <span data-x="dom-open-features">as defined in the CSSOM
View specification</span>. <ref spec="CSSOMVIEW"></p></li>
<li><p>Let <var>tokenizedFeatures</var> be the result of <span
data-x="concept-window-open-features-tokenize">tokenizing</span> <var>features</var>.</p></li>

<li><p>If <var>target browsing context</var> is a new <span>auxiliary browsing context</span>,
then <span>set up browsing context features</span> for <var>target browsing context</var> given
<var>tokenizedFeatures</var>. <ref spec="CSSOMVIEW"></p></li>

<li>

Expand Down Expand Up @@ -78711,10 +78718,9 @@ callback <dfn>FrameRequestCallback</dfn> = void (<span>DOMHighResTimeStamp</span

<ol>

<li><p>If the result of <span data-x="split a string on commas">splitting <var>features</var>
on commas</span> contains the token "<code data-x="">noopener</code>", then <span
data-x="disowned its opener">disown <var>target browsing context</var>'s opener</span> and
return null.</p></li>
<li><p>If <var>tokenizedFeatures</var> <span data-x="map exists">contains</span> an entry with
the key "<code data-x="">noopener</code>", then <span data-x="disowned its opener">disown
<var>target browsing context</var>'s opener</span> and return null.</p></li>

<li><p>Otherwise, return the <code>WindowProxy</code> object of <var>target browsing
context</var>.</p></li>
Expand All @@ -78725,6 +78731,102 @@ callback <dfn>FrameRequestCallback</dfn> = void (<span>DOMHighResTimeStamp</span

</ol>

<p>To <dfn data-x="concept-window-open-features-tokenize">tokenize the <var>features</var>
argument</dfn>:</p>

<ol>
<li><p>Let <var>tokenizedFeatures</var> be a new <span>ordered map</span>.</p></li>

<li><p>Let <var>position</var> point at the first code point of <var>features</var>.</p></li>

<li>
<p><span>While</span> <var>position</var> is not past the end of <var>features</var>:</p>

<ol>
<li><p>Let <var>name</var> be the empty string.</p></li>

<li><p>Let <var>value</var> be the empty string.</p></li>

<li><p><span>Collect a sequence of code points</span> that are <span data-x="feature
separator">feature separators</span> from <var>features</var> given <var>position</var>. This
skips past leading separators before the name.</p></li>

<li><p><span>Collect a sequence of code points</span> that are not <span data-x="feature
separator">feature separators</span> from <var>features</var> given <var>position</var>. Set
<var>name</var> to the collected characters, <span>converted to ASCII lowercase</span>.</p></li>

<li><p>Set <var>name</var> to the result of <span>normalizing the feature name</span>
<var>name</var>.</p></li>

<li>
<p><span>While</span> <var>position</var> is not past the end of <var>features</var> and the
code point at <var>position</var> in <var>features</var> is not U+003D (=):</p>

<ol>
<li><p>If the code point at <var>position</var> in <var>features</var> is U+002C (,), or if
it is not a <span>feature separator</span>, then <span>break</span>.</p></li>

<li><p>Advance <var>position</var> by 1.</p></li>
</ol>

<p class="note">This skips to the first U+003D (=) but does not skip past a U+002C (,) or a
non-separator.</p>
</li>

<li>
<p>If the code point at <var>position</var> in <var>features</var> is a <span>feature
separator</span>:</p>

<ol>
<li>
<p>While <var>position</var> is not past the end of <var>features</var> and the code point
at <var>position</var> in <var>features</var> is a <span>feature separator</span>:</p>

<ol>
<li><p>If the code point at <var>position</var> in <var>features</var> is U+002C (,), then
<span>break</span>.</p></li>

<li><p>Advance <var>position</var> by 1.</p></li>
</ol>

<p class="note">This skips to the first non-separator but does not skip past a U+002C
(,).</p>
</li>

<li><p><span>Collect a sequence of code points</span> that are not <span data-x="feature
separator">feature separators</span> code points from <var>features</var> given
<var>position</var>. Set <var>value</var> to the collected code points, <span>converted to
ASCII lowercase</span>.</p></li>
</ol>
</li>

<li><p>If <var>name</var> is not the empty string, then set
<var>tokenizedFeatures</var>[<var>name</var>] to <var>value</var>.</p></li>
</ol>
</li>

<li><p>Return <var>tokenizedFeatures</var>.</p></li>
</ol>

<p>A code point is a <dfn>feature separator</dfn> if it is <span>ASCII whitespace</span>, U+003D
(=), or U+002C (,).</p>

<p>For legacy reasons, there are some aliases of some feature names. To <dfn data-x="normalizing
the feature name">normalize a feature name</dfn> <var>name</var>, switch on <var>name</var>:</p>

<dl class="switch">
<dt>"<code data-x="">screenx</code>"
<dd>Return "<code data-x="">left</code>".
<dt>"<code data-x="">screeny</code>"
<dd>Return "<code data-x="">top</code>".
<dt>"<code data-x="">innerwidth</code>"
<dd>Return "<code data-x="">width</code>".
<dt>"<code data-x="">innerheight</code>"
<dd>Return "<code data-x="">height</code>".
<dt>Anything else
<dd>Return <var>name</var>.
</dl>

<hr>

<p>The <dfn><code data-x="dom-name">name</code></dfn> attribute of the <code>Window</code> object
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