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Close dialog elements when the open attribute is removed #10124

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Close dialog elements when the open attribute is removed #10124

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128a87e
Close dialog elements when the open attribute is removed
josepharhar Feb 5, 2024
9cdcfdd
add ignoreOpenAttribute parameter
josepharhar Feb 6, 2024
ae5c95d
delete notes
josepharhar Feb 6, 2024
6f65d03
fix closing tag
josepharhar Feb 7, 2024
d84add3
split into two algorithms
josepharhar Feb 7, 2024
42df787
remove ignoreopenattribute
josepharhar Feb 9, 2024
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Expand Up @@ -59316,7 +59316,8 @@ fur
<li><p>Otherwise, if <var>submitter</var> has a <span data-x="concept-fe-value">value</span>,
then set <var>result</var> to that <span data-x="concept-fe-value">value</span>.</p></li>

<li><p><span>Close the dialog</span> <var>subject</var> with <var>result</var>.</p></li>
<li><p><span>Close the dialog with attribute changes</span> given <var>subject</var> and
<var>result</var>.</p></li>

<li><p>Return.</p></li>
</ol>
Expand Down Expand Up @@ -61051,26 +61052,19 @@ interface <dfn interface>HTMLDialogElement</dfn> : <span>HTMLElement</span> {

</div>

<div class="note" id="note-dialog-remove-open-attribute">
<p>Removing the <code data-x="attr-dialog-open">open</code> attribute will usually hide the
dialog. However, doing so has a number of strange additional consequences:

<ul>
<li><p>The <code data-x="event-close">close</code> event will not be fired.</p></li>
<p>The following <span data-x="concept-element-attributes-change-ext">attribute change
steps</span>, given <var>element</var>, <var>localName</var>, <var>oldValue</var>,
<var>value</var>, and <var>namespace</var> are used for <code>dialog</code> elements:</p>

<li><p>The <code data-x="dom-dialog-close">close()</code> method, and any <span data-x="close
request">close requests</span>, will no longer be able to close the dialog.</p></li>
<ol>
<li><p>If <var>namespace</var> is not null, then return.</p></li>

<li><p>If the dialog was shown using its <code data-x="dom-dialog-showModal">showModal()</code>
method, the <code>Document</code> will still be <span data-x="blocked by a modal
dialog">blocked</span>.</p></li>
</ul>
<li><p>If <var>localName</var> is not <code data-x="attr-dialog-open">open</code>, then
return.</p></li>

<p>For these reasons, it is generally better to never remove the <code
data-x="attr-dialog-open">open</code> attribute manually. Instead, use the <code
data-x="dom-dialog-close">close()</code> method to close the dialog, or the <code
data-x="attr-hidden">hidden</code> attribute to hide it.</p>
</div>
<li><p>If <var>value</var> is null, then <span>close the dialog</span> given
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This won't work, because it will return in step 1, because the open attribute has already been removed.

I guess we need to factor out steps 3-9 into a separate algorithm. Maybe "process open attribute removal"?

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Whoops I forgot that, I added a parameter to close in chromium. I just added it here. What do you think?

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I think it's slightly harder to understand than factoring out the steps would be, but I don't feel too strongly. (Thanks for updating the algorithm declaration style while you were there!)

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Ok, I factored out the steps into a separate algorithm

<var>element</var> and null.</p></li>
</ol>

<p>The <code data-x="attr-tabindex">tabindex</code> attribute must not be specified on
<code>dialog</code> elements.</p>
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Expand Down Expand Up @@ -61257,11 +61251,12 @@ interface <dfn interface>HTMLDialogElement</dfn> : <span>HTMLElement</span> {
<ol>
<li><p>If <var>returnValue</var> is not given, then set it to null.</p></li>

<li><p><span>Close the dialog</span> <span>this</span> with <var>returnValue</var>.</p></li>
<li><p><span>Close the dialog with attribute changes</span> given <span>this</span> and
<var>returnValue</var>.</p></li>
</ol>

<p>When a <code>dialog</code> element <var>subject</var> is to be <dfn data-x="close the
dialog">closed</dfn>, with null or a string <var>result</var>, run these steps:</p>
<p>To <dfn>close the dialog with attribute changes</dfn> given a <code>dialog</code> element
<var>subject</var> and a string or null <var>result</var>:</p>
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<ol>
<li><p>If <var>subject</var> does not have an <code data-x="attr-dialog-open">open</code>
Expand All @@ -61270,6 +61265,13 @@ interface <dfn interface>HTMLDialogElement</dfn> : <span>HTMLElement</span> {
<li><p>Remove <var>subject</var>'s <code data-x="attr-dialog-open">open</code>
attribute.</p></li>

<li><p>Run <span>close the dialog</span> given <var>subject</var> and <var>result</var>.</p></li>
</ol>

<p>To <dfn>close the dialog</dfn> given a <code>dialog</code> element <var>subject</var> and a
string or null <var>result</var>:</p>

<ol>
<li><p>If the <span>is modal</span> flag of <var>subject</var> is true, then <span>request an
element to be removed from the top layer</span> given <var>subject</var>.</p></li>

Expand Down Expand Up @@ -61332,11 +61334,7 @@ interface <dfn interface>HTMLDialogElement</dfn> : <span>HTMLElement</span> {
<li><p>Hiding a dialog is different from closing one. Closing a dialog gives it a return value,
fires an event, unblocks the page for other dialogs, and so on. Whereas hiding a dialog is a
purely visual property, and is something you can already do with the <code
data-x="attr-hidden">hidden</code> attribute or by removing the <code
data-x="attr-dialog-open">open</code> attribute. (See also the <a
href="#note-dialog-remove-open-attribute">note above</a> about removing the <code
data-x="attr-dialog-open">open</code> attribute, and how hiding the dialog in that way is
generally not desired.)</p></li>
data-x="attr-hidden">hidden</code> attribute.</p></li>

<li><p>Showing a dialog is different from opening one. Opening a dialog consists of creating
and showing that dialog (similar to how <code data-x="dom-open">window.open()</code> both
Expand Down