Tags: safari

Earlier this year I wrote about some performance improvements to The Session using the content-visibility property in CSS.

If you say content-visibility: auto you’re telling the browser not to bother calculating the layout and paint for an element until it needs to. But you need to combine it with the contain-intrinsic-block-size property so that the browser knows how much space to leave for the element.

I mentioned the browser support:

Right now content-visibility is only supported in Chrome and Edge. But that’s okay. This is a progressive enhancement. Adding this CSS has no detrimental effect on the browsers that don’t understand it (and when they do ship support for it, it’ll just start working).

Well, that’s happened! Safari 18 supports content-visibility. I didn’t have to do a thing and it just started working.

But …I think I’ve discovered a little bug in Safari’s implementation.

(I say I think it’s a bug with the browser because, like Jim, I’ve made the mistake in the past of thinking I had discovered a browser bug when in fact it was something caused by a browser extension. And when I say “in the past”, I mean yesterday.)

So here’s the issue: if you apply content-visibility: auto to an element that contains an SVG, and that SVG contains a text element, then Safari never paints that text to the screen.

To see an example, take a look at the fourth setting of Cooley’s reel on The Session archive. There’s a text element with the word “slide” (actually the text is inside a tspan element inside a text element). On Safari, that text never shows up.

I’m using a link to the archive of The Session I created recently rather than the live site because on the live site I’ve removed the content-visibility declaration for Safari until this bug gets resolved.

I’ve also created a reduced test case on Codepen. The only HTML is the element containing the SVGs. The only CSS—apart from the content-visibility stuff—is just a little declaration to push the content below the viewport so you have to scroll it into view (which is when the bug happens).

I’ve filed a bug report. I know it’s a fairly niche situation, but there are some other issues with Safari’s implementation of content-visibility so it’s possible that they’re all related.

Back in June I documented a bug on macOS in how Spaces (or whatever they call they’re desktop management thingy now) works with websites added to the dock.

I’m happy to report that after upgrading to Sequoia, the latest version of macOS, the bug has been fixed! Excellent!

Not only that, but there’s another really great little improvement…

Let’s say you’ve installed a website like The Session by adding it to the dock. Now let’s say you get an email in Apple Mail that includes a link to something on The Session. It used to be that clicking on that link would open it in your default web browser. But now clicking on that link opens it in the installed web app!

It’s a lovely little enhancement that makes the installed website truly feel like a native app.

Websites in the dock also support the badging API, which is really nice!

Like I said at the time:

I wonder if there’s much point using wrappers like Electron any more? I feel like they were mostly aiming to get that parity with native apps in having a standalone application launched from the dock.

Now all you need is a website.

The biggest issue remains discovery. Unless you already know that it’s possible to add a website to the dock, you’re unlikely to find out about it. That’s why I’ve got a page with installation instructions on The Session.

Still, the discovery possibilities on Apples’s desktop devices are waaaaay better than on Apple’s mobile devices.

Apple are doing such great work on their desktop operating system to make websites first-class citizens. Meanwhile, they’re doing less than nothing on their mobile operating system. For a while there, they literally planned to break all websites added to the homescreen. Fortunately they were forced to back down.

But it’s still so sad to see how Apple are doing everything in their power to prevent people from finding out that you can add websites to your homescreen—despite (or perhaps because of) the fact that push notifications on iOS only work if the website has been added to the home screen!

So while I’m really happy to see the great work being done on installing websites for desktop computers, I’m remain disgusted by what’s happening on mobile:

At this point I’ve pretty much given up on Apple ever doing anything about this pathetic situation.

The datalist element is good. It was a bit bumpy there for a while, but browser implementations have improved over time. Now it’s by far the simplest and most robust way to create an autocompleting combobox widget.

Hook up an input element with a datalist element using the list and id attributes and you’re done. You can even use a bit of Ajax to dynamically update the option elements inside the datalist in response to the user’s input. The browser takes care of all the interaction. If you try to roll your own combobox implementation, it’s almost certainly going to involve a lot of JavaScript and still probably won’t account for all use cases.

Safari on iOS—and therefore all browsers on iOS—didn’t support datalist for quite a while. But once it finally shipped, it worked really nicely. The options showed up just like automplete suggestions above the keyboard.

But that broke a while back.

The suggestions still appeared, but if you tapped on one of them, nothing happened. The input element didn’t get updated. You had to tap on a little downward arrow inside the input in order to see the list of options.

That was really frustrating for anybody on iOS using The Session. By far the most common task on the site is searching for a tune, something that’s greatly (progressively) enhanced with a dynamically-updating datalist.

I just updated to iOS 18 specifically to see if this bug has been fixed, and it has:

Fixed updating the input value when selecting an option from a datalist element.

Hallelujah!

But now there’s some additional behaviour that’s a little weird.

As well as showing the options in the autocomplete list above the keyboard, Safari on iOS—and therefore all browsers on iOS—also pops up the options as a list (as if you had tapped on that downward arrow). If the list is more than a few options long, it completely obscures the input element you’re typing into!

I’m not sure if this is a bug or if it’s the intended behaviour. It feels like a bug, but I don’t know if I should file something.

For now, I’ve updated the datalist elements on The Session to only ever hold three option elements in order to minimise the problem. Seeing as the autosuggest list above the keyboard only ever shows a maximum of three suggestions anyway, this feels like a reasonable compromise.

An Abridged History of Safari Showstoppers - Webventures

In an earlier era, startups could build on the web and, if one browser didn’t provide the features they needed, they could just recommend that their users try a better one. But that’s not possible on iOS.

I’m extremly concerned about the newest bug in iOS 18:

On-screen keyboard does not show up for installed web apps (PWAs) when focusing a text input of any kind

Whaa? That’s just shockingly dreadful!

WP2 - The requirement for browsers operating on iOS devices to use Apple’s WebKit browser engine [PDF]

The Competition & Markets Authority brings receipts:

The requirement that all browsers on the iOS operating system use a specific version of the WebKit browser engine controlled by Apple, means that there is no competition between browser engines on the platform. Browser vendors cannot switch to an alternative browser engine or make changes to the version of WebKit used on iOS. Similarly, consumers are unable to switch to a browser based on an alternative browser engine. We consider that the lack of competitive pressure is likely to reduce Apple’s incentives to improve WebKit.

Apple announced some stuff about artificial insemination at their WorldWide Developer Conference, none of which interests me one whit. But we did get a twitch of the webkit curtains to let us know what’s coming in Safari. That does interest me.

I’m really pleased to see that on desktop, websites that have been added to the dock will be able to intercept links for that domain:

Now, when a user clicks a link, if it matches the scope of a web app that the user has added to their Dock, that link will open in the web app instead of their default web browser.

Excellent! This means that if I click on a link to thesession.org from, say, my Mastodon site-in-the-dock, it will open in The Session site-in-the-dock. Make sure you’ve got the scope property set in your web app manifest.

I have a few different sites added to my dock: The Session, Mastodon, Google Calendar. Sure beats the bloat of Electron apps.

I have encountered a small bug. I’ll describe it here because I have no idea where to file it.

It’s to do with Spaces, Apple’s desktop management thingy. Maybe they don’t call it Spaces anymore. Maybe it’s called Mission Control now. Or Stage Manager. I can’t keep track.

Anyway, here are the steps to reproduce:

1. In Safari on Mac, go to a website like adactio.com
2. From either the File menu or the share icon, select Add to dock.
3. Click on the website’s icon in the dock to open it.
4. Using Apple’s desktop management (Spaces?) available through the F3 key, drag that window to a desktop other than desktop 1.
5. Right click on the site’s icon in the dock and select Options, then Assign To, then This Desktop.
6. Quit the app/website.
7. Return to desktop 1.

Expected behaviour: when I click on the icon in the dock to open the site, it will open in the desktop that it has been assigned to.

Observed behaviour: focus moves to the desktop that the site has been assigned to, but it actually opens in desktop 1.

If someone from Apple is reading, I hope that’s useful.

On the one hand, I hope this isn’t one of those bugs that only I’m experiencing because then I’ll feel foolish. On the other hand, I hope this is one of those bugs that only I’m experiencing because then others don’t have to put up with the buggy behaviour.

This is a little follow-up to my post about web components for date inputs.

If you try the demo on iOS it doesn’t work. There’s nothing stopping you selecting any date.

That’s nothing to do with the web components. It turns out that Safari on iOS doesn’t support min and max on date inputs. This is also true of any other browser on iOS because they’re all just Safari in a trenchcoat …for now.

I was surprised — input type="date" has been around for a long time now. I mean, it’s not the end of the world. You’d have to do validation on inputted dates on the server anyway, but it sure would be nice for the user experience of filling in forms.

Alas, it doesn’t look like this is something on the interop radar.

What really surprised me was looking at Can I Use. That shows Safari on iOS as fully supporting date inputs.

Maybe it’s just semantic nitpickery on my part but I would consider that the lack of support for the min and max attributes means that date inputs are partially supported.

Can I Use gets its data from here. I guess I need to study the governance rules and try to figure out how to submit a pull request to update the currently incorrect information.

There’s a lovely CSS property called hanging-punctuation. You can use it to do exactly what the name suggests and exdent punctuation marks such as opening quotes.

Here’s one way to apply it:

html {
  hanging-punctuation: first last;
}

Any punctuation marks at the beginning or end of a line will now hang over the edge, leaving you with nice clean blocks of text; no ragged edges.

Right now it’s only supported in Safari but there’s no reason not to use it. It’s a perfect example of progressive enhancement. One line of CSS to tidy things up for the browsers that support it and leave things exactly as they are for the browsers that don’t.

But when I used this over on The Session I noticed an unintended side-effect. Because I’m applying the property globally, it’s also acting on form fields. If the text inside a form field starts with a quotation mark or some other piece of punctuation, it’s shunted off to the side and hidden.

Here’s the fix I used:

input, textarea {
  hanging-punctuation: none;
}

It’s a small little gotcha but I figured I’d share it in case it helps someone else out.

WebKit Features in Safari 17.4 | WebKit

It’s a shame that the newest Safari release is overshadowed by Apple’s shenanigans and subsequent U-turn because there’s some great stuff in there.

I really like what they’re doing with web apps added to the dock:

Safari adds support for the shortcuts manifest member on macOS Sonoma. This gives you a mechanism in the manifest file for defining custom menu commands that will appear in the File menu and the Dock context menu.

Bugs I’ve filed on browsers | Read the Tea Leaves

I think filing bugs on browsers is one of the most useful things a web developer can do.

Agreed!

Apple backs off killing web apps, but the fight continues - Open Web Advocacy

Hallelujah! Apple have backed down on their petulant plan to sabatoge homescreen apps.

I’m very grateful to the Open Web Advocacy group for standing up to this bullying.

Home Screen Advantage - Infrequently Noted

This is exactly what it looks like: a single-fingered salute to the web and web developers.

Read Alex’s thorough explanation of the current situation and then sign this open letter.

Cupertino’s not just trying to vandalise PWAs and critical re-engagement features for Safari; it’s working to prevent any browser from ever offering them on iOS. If Apple succeeds in the next two weeks, it will cement a future in which the mobile web will never be permitted to grow beyond marketing pages for native apps.

Also, remember this and don’t fall for it:

Apple apparently hopes it can convince users to blame regulators for its own choices.

Browsers Are Weird Right Now – Tyler Sticka

‘Sfunny, I’d been meaning to write a blog post on exactly this topic, but Tyler says it all …and that’s before Apple’s scandalous shenanigans.

Manton Reece - Apple is twisting the truth

When it benefits Apple, they take the DMA requirements much further than intended. When it doesn’t benefit them, they lean back on the “integrity” of iOS and barely comply at all.

The European Union’s Digital Markets Act is being enforced and Apple aren’t happy about it.

Most of the discussion around this topic has centred on the requirement for Apple to provision alternative app stores. I don’t really care about that because I don’t really care about native apps. With one exception: I care about web browsers.

That’s the other part of the DMA that’s being enforced: Apple finally have to allow alternative browsing engines. Hallelujah!

Instead of graciously acknowledging that this is what’s best for users, Apple are throwing a tantrum.

First of all, they’re going to ringfence any compliance to users in the European Union. Expect some very interesting edge cases to emerge in a world where people don’t spent their entire lives in one country.

Secondly, Apple keep insisting that this will be very, very bad for security. You can read Apple’s announcement on being forced to comply but as you do you so, I’d like you to remember one thing: every nightmare scenario they describe for the security of users in the EU is exactly what currently happens on Macs everywhere in the world.

This includes risks from installing software from unknown developers that are not subject to the Apple Developer Program requirements, installing software that compromises system integrity with malware or other malicious code, the distribution of pirated software, exposure to illicit, objectionable, and harmful content due to lower content and moderation standards, and increased risks of scams, fraud, and abuse.

Users of macOS everywhere are currently exposed to all the risks that will supposedly overwhelm iOS users in the European Union. Weirdly, the sky hasn’t fallen.

It’s the same with web browsers. I just got a new Mac. It came with one browser pre-installed: Safari. It’s a good browser. But I also have the option of installing another browser, like Firefox (which I’ve done). A lot of people just use Safari. That’s good. That’s choice. Everyone wins.

Now Apple need to provide parity on iOS, at least for users in the EU. Again, Apple are decribing this coming scenario as an absolute security nightmare. But again, the conditions they’re describing are what already exist on macOS.

All Apple is being asked to do is offer than the same level of choice on mobile that everyone already enjoys on their computers. Rather than comply reasonably, Apple have found a way to throw their toys out of the pram.

As of the next update to iOS, users in the EU will no longer have homescreen apps. Those web apps will now launch in a browser window. Presumably they’ll also lose the ability to send push notifications: being a homescreen app was a prerequisite for that functionality.

This is a huge regression that only serves to harm and confuse users.

I have a website about traditional Irish music. Guess where a significant amount of the audience is based? That’s right: Ireland. In the European Union.

There is no native app for The Session, but you can install it on your phone nonetheless. Lots of people have done that. After a while they forget that they didn’t install it from an app store: it behaves just like any other app on their homescreen.

That’s all about to change. I’m going to get a lot of emails from confused users wondering why their app is broken, now opening in a regular browser window. And I won’t be able to do anything about it, other than to tell them to take it up with Apple.

Presumably Apple is hoping that users will direct their anger at the EU commission instead. They’re doing their best to claim that they’re being forced to make this change. That’s completely untrue. A lie:

This is emphatically not required by the EU’s Digital Markets Act (DMA). It’s a circumvention of both the spirit and the letter of the Act, and if the EU allows it, then the DMA will have failed in its aim to allow fair and effective browser and web app competition.

Throughout all their communications on this topic, Apple are sticking to their abuser logic:

Look what you made me do!

This is going to hurt me more than it hurts you.

Apple’s petulant policy of malicious compliance is extremely maddening. What they’re about to do to users in the EU is just nasty.

This is a very dark time for the web.

I feel bad for the Safari team. They’ve been working really hard recently to make Safari a very competitive browser with great standards support with a quicker release cycle than we’ve seen before. Then it all gets completely torpedoed at the level of the operating system.

I really hope that Apple won’t get away with their plan to burn down web apps on iOS in the EU. But hope isn’t enough. We need to tell the EU commission how much damage this will do.

If you’ve ever built a web app, then your users will suffer. Remember, it’s a world wide web, including the European Union.

Create a PDF with the following information:

• Your company’s name.
• Your name.
• That your company operates or services the EU.
• How many users your service has in the EU (approximately).
• The level of impact this will have on your business.
• The problems this will cause your business.
• Whether or not the submission is confidential.

The submission can be as short or long as you want. Send it to [email protected], ideally before Monday, February 19th.

I know that’s a lot to ask of you on your weekend, but this really matters for the future of the web.

At the very least, I encourage to get involved with the great work being done by the Open Web Advocacy group. They’re also on Discord.

Please don’t let Apple bully an entire continent of users.

Apple on course to break all Web Apps in EU within 20 days - Open Web Advocacy

I don’t like to assume the worst and assign vindictitive motives to people, but what Apple is doing here is hard to read as anything other than petulant and nasty …and really, really bad for users.

If you’ve ever made a progressive web app, please fill in this survey.

Web Push on iOS - 1 year anniversary - Webventures

Web Push on iOS is nearing its one year anniversary. It’s still mostly useless.

Sad, but true. And here’s why:

On iOS, for a website to be able to ask the user to grant the push notification permission, it needs to be installed to the home screen.

No other browser on any of the other platforms requires you to install a website for it to be able to send push notifications.

Apple is within their rights to withhold Web Push to installed apps. One could argue it’s not even an unreasonable policy - if Apple made installing a web app at least moderately straightforward. As it is, they have buried it and hidden important functionality behind it.

I really, really hope that the Safari team are reading this.

I was impressed with how Safari now allows you to add websites to the dock:

It feels great to have websites that act just like other apps. I like that some of the icons in my dock are native, some are web apps, and I mostly don’t notice the difference.

Trys liked it too:

For all intents and purposes, this is a desktop application created without a single line of Swift or Objective-C, or any heavy Electron wrappers.

Oh, and the application can work offline! Service workers, and browser storage are more than stable enough to handle a variety of offline loading patterns. These are truly exciting times to be building for the web!

There was one aspect that I was particularly pleased with. External links:

Links within a Safari-installed web app respect your default browser choice.

Excellent! Except it’s no longer true. At least not in some cases. The behaviour is inconsisent but I’m running the latest version of Safari on the latest version of Sonoma, and now external links in a Safari-installed web app are broken. They just stay in the same application.

I thought maybe it was related to whether the website’s manifest file has the display value set to “standalone” rather than, say, “minimal ui”. Maybe the “standalone” instruction is being taken literally? But even when I change the value I’m still getting the broken behaviour.

This may sound like a small thing, but it completely changes the feel of using the web app. Instead of feeling like “I’m using an app that just happens to be on the web”, it now feels like “I’m using a web browser but with fewer features.”

I’ve been loving having Mastodon as a standalone app in my dock. It used to be that if I clicked on a link in a Mastodon post, it would open in my browser of choice (Firefox) where I could then bookmark it, or do any other tasks that my browser offers me. Now if I click on a link in Mastodon, I’m stuck in the same “app”. It feels horribly stifling.

I can right-click on a link and get options that still keep me in the same app, like “Open link” or “Open Link in New Window.” To actually open the link in my web browser, I have to select “Copy Link”, then go to my web browser, open a new tab, and paste the link in there.

This is broken. I hope it isn’t intentional. Maybe I’m just at the receiving end of some weird glitch. If this stays this way, I’ll probably just remove the Safari-installed web apps from my dock. They feel pointless if they’re just roach motels.

I’d love to file a bug for this, but this isn’t a Webkit bug, it’s a Safari bug (and the Webkit bug tracker is at pains to point out that Webkit and Safari are not the same thing). But have you ever tried to file a bug with Apple? Good luck!

Anyway, I sincerely hope that this change will be walked back. Otherwise websites in the dock are dead in the water.

WebKit Features in Safari 17.2 | WebKit

Lots of new features landing in Safari, and it’s worth paying attention to the new icon requirements now that websites can be added to the dock:

To provide the best user experience on macOS, supply at least one opaque, full-bleed maskable square icon in the web app manifest, either as SVG (any size) or high resolution bitmap (1024×1024).

Baseline’s evolution on MDN | MDN Blog

These updated definitions makes sense to me:

1. Newly available. The feature is marked as interoperable from the day the last core browser implements it. It marks the moment when developers can start getting excited and learning about a feature.
2. Widely available. The feature is marked as having wider support thirty months or 2.5 years later. It marks the moment when it’s safe to start using a feature without explicit cross-browser compatibility knowledge.