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Improve compat notes and behavior on popover-hint demo #329

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Merged
chrisdavidmills merged 3 commits into from
Oct 17, 2025
Merged

Improve compat notes and behavior on popover-hint demo #329

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f48d780
Improve compat notes and behavior on popover-hint demo
chrisdavidmills Aug 28, 2025
5348364
Updates for pepelsbey review comments
chrisdavidmills Sep 18, 2025
3933009
Implement Vadim suggestion
chrisdavidmills Oct 17, 2025
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28 changes: 22 additions & 6 deletions popover-api/popover-hint/index.css
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Original file line number Diff line number Diff line change
Expand Up @@ -5,7 +5,7 @@
}

html {
font-family: sans-serif;
font-family: system-ui;
height: 100%;
overflow: hidden;
}
Expand All @@ -14,20 +14,21 @@ body {
height: inherit;
background: #ccc;
margin: 0;
}

#wrapper {
height: inherit;
display: flex;
justify-content: center;
align-items: center;
}

#wrapper {
position: relative;
width: 60%;
max-width: 500px;
}

/* Button bar styling */

#button-bar {
height: 48px;
width: 30%;
min-width: 300px;
padding: 8px;
border-radius: 6px;
Expand All @@ -36,6 +37,7 @@ body {
display: flex;
justify-content: space-around;
gap: 10px;
z-index: 1;
}

/* Button styling */
Expand All @@ -61,6 +63,7 @@ body {
[popover="auto"] {
inset: unset;
position: absolute;
bottom: 0;
bottom: calc(anchor(top) + 20px);
justify-self: anchor-center;
margin: 0;
Expand Down Expand Up @@ -126,11 +129,24 @@ body {
margin: 0;
padding: 16px;
box-shadow: 1px 1px 3px #999;
z-index: -1;
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@pepelsbey pepelsbey Sep 15, 2025

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This line makes the paragraph unreachable to the cursor, as it’s hidden behind the body: no text selection, no link clicking.

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@chrisdavidmills chrisdavidmills Sep 18, 2025

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Ah, crap, that was foolish! In my next commit I have adjusted the z-index values to fix this issue.

}

.help-para p {
margin: 0;
}

.help-para p:first-child {
margin-bottom: 1rem;
}

@media (max-width: 640px) {
.help-para {
width: auto;
right: 16px;
}

#wrapper {
width: 90%;
}
}
64 changes: 40 additions & 24 deletions popover-api/popover-hint/index.html
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Original file line number Diff line number Diff line change
Expand Up @@ -31,32 +31,48 @@
Menu C
</button>
</section>
</div>

<p class="help-para">
Press the buttons to show the auto popovers. Hover or focus the buttons to
show the hint popovers. When an auto popover is shown, you can show the
hint popovers without hiding it. See
<a
href="https://developer.mozilla.org/en-US/docs/Web/API/Popover_API/Using#using_hint_popover_state"
>Using "hint" popover state</a
>
for more information. Note that in non-supporting browsers, the position
of the popovers is broken.
</p>
<div id="submenu-1" popover="auto">
<button>Option A</button><br /><button>Option B</button>
</div>
<div id="submenu-2" popover="auto">
<button>Option A</button><br /><button>Option B</button>
</div>
<div id="submenu-3" popover="auto">
<button>Option A</button><br /><button>Option B</button>
</div>

<div id="submenu-1" popover="auto">
<button>Option A</button><br /><button>Option B</button>
</div>
<div id="submenu-2" popover="auto">
<button>Option A</button><br /><button>Option B</button>
</div>
<div id="submenu-3" popover="auto">
<button>Option A</button><br /><button>Option B</button>
<div id="tooltip-1" class="tooltip" popover="hint">Tooltip A</div>
<div id="tooltip-2" class="tooltip" popover="hint">Tooltip B</div>
<div id="tooltip-3" class="tooltip" popover="hint">Tooltip C</div>
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@pepelsbey pepelsbey Sep 15, 2025

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I would suggest putting tooltips right next to the buttons they’re triggered by. First of all, this is something you would most likely do in a real-world component to contain everything. Second, it might help to position them next to the buttons as a fallback for browsers that don’t support the hint value yet:

<button
  popovertarget="submenu-1"
  popovertargetaction="toggle"
  id="menu-1">
  Menu A
</button>

<div id="tooltip-1" class="tooltip" popover="hint">
  Tooltip A
</div>

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@chrisdavidmills chrisdavidmills Sep 18, 2025

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I've done that, experimented with moving the HTML around a bit more besides, and made a few CSS adjustments, but I still can't make it work particularly well in browsers that don't support anchor positioning. Do you have any suggestions?

</div>

<div id="tooltip-1" class="tooltip" popover="hint">Tooltip A</div>
<div id="tooltip-2" class="tooltip" popover="hint">Tooltip B</div>
<div id="tooltip-3" class="tooltip" popover="hint">Tooltip C</div>
<div class="help-para">
<p>
Press the buttons to show the auto popovers. Hover or focus the buttons
to show the hint popovers. When an auto popover is shown, you can show
the hint popovers without hiding it. See
<a
href="https://developer.mozilla.org/en-US/docs/Web/API/Popover_API/Using#using_hint_popover_state"
>Using "hint" popover state</a
>
for more information.
</p>
<p>
Note that this demo uses both hint popovers and CSS anchor positioning.
Browsers that don't support the former will experience different tooltip
behavior. Browsers that don't support the latter will not see the menus
and tooltips appear in the correct position relative to each button on
the button bar. Check browser support for
<a
href="https://developer.mozilla.org/en-US/docs/Web/HTML/Reference/Global_attributes/popover#browser_compatibility"
>hint popovers</a
>
and
<a
href="https://developer.mozilla.org/en-US/docs/Web/CSS/position-anchor#browser_compatibility"
>anchor-positioning</a
>.
</p>
</div>
</body>
</html>