[gwt-contrib] Re: Officially deprecating Opera permutation
On Wednesday, June 4, 2014 5:43:58 AM UTC+2, Colin Alworth wrote:
I've just opened https://gwt-review.googlesource.com/7780 to make it
possible to specify a fallback for any/all useragents that don't match one
of the built-in rules, via a rule like:
set-property-fallback name=user.agent value=webkit/
This example rule treats any unknown useragent as if it were webkit,
rather than the non-existent 'unknown' useragent, which subsequently tries
to load undefined.cache.html, etc. This could also be used in conjunction
with defining a user.agent value for unknown browsers and falling back to
an existing one (like Thomas suggested), along with a possible error
message, but that runs the risk of failing to match any CssResource @if
rules, for example. This will of course create a huge amount of warnings in
your application Could not find an exact match rule. Using 'closest'
rule... when attempt to rebind things that cannot be matched to unknown
and fall back to gecko1_8, etc.
!-- Create new value, try and use ff details for it (most of the
time) --
extend-property name=user.agent values=unknown
fallback-value=gecko1_8 /
!-- this line is not actually necessary unless you want to use a
string other than 'unknown', and won't work before the above patch --
set-property-fallback name=user.agent value=unknown/
!-- 'most of the time' we want ff, except for a warning when the page
boots. --
!-- To achieve that, we create a second entrypoint that extends the
real one, but also displays a warning about this browser being unsupported
--
replace-with class=pack.age.to.client.UnknownBrowserEntryPoint
when-type-is class=pack.age.to.client.RealAppEntryPoint /
/replace-with
Thomas, were you suggesting a filter in GWT itself to let the server do
this, or to have an 'UnknownUserAgentEntryPoint' built into GWT itself?
I don't remember, but I don't think so.
From the review, I think having UserAgent#getRuntimeValue() returning
'unknown' in the fallback case would be enough:
class FallbackEntrypoint extends MainEntrypoint {
@Override
public void onModuleLoad() {
super.onModuleLoad();
UserAgent userAgent = GWT.create(UserAgent.class);
if (unknown.equals(userAgent.getRuntimeValue())) {
// display warning
}
}
replace-with class=com.example.client.FallbackEntrypoint
when-type-is class=com.example.client.MyEntrypoint /
when-property-is name=user.agent value=gecko1_8 / !-- same value
as user.agent fallback --
/replace-with
set-property-fallback name=user.agent value=gecko1_8 /
Similar to what you proposed but without the extend-property that would
cause a lot of compile-time warnings.
(note: you can even make this reusable by putting it in a gwt.xml and
having MyEntrypoint be a no-op; you'd then have 2 entry-points in your app
when you inherit this module, just like Logging, DocumentMode and UserAgent
add their own entry-points)
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[gwt-contrib] Re: Officially deprecating Opera permutation
I've just opened https://gwt-review.googlesource.com/7780 to make it possible to specify a fallback for any/all useragents that don't match one of the built-in rules, via a rule like: set-property-fallback name=user.agent value=webkit/ This example rule treats any unknown useragent as if it were webkit, rather than the non-existent 'unknown' useragent, which subsequently tries to load undefined.cache.html, etc. This could also be used in conjunction with defining a user.agent value for unknown browsers and falling back to an existing one (like Thomas suggested), along with a possible error message, but that runs the risk of failing to match any CssResource @if rules, for example. This will of course create a huge amount of warnings in your application Could not find an exact match rule. Using 'closest' rule... when attempt to rebind things that cannot be matched to unknown and fall back to gecko1_8, etc. !-- Create new value, try and use ff details for it (most of the time) -- extend-property name=user.agent values=unknown fallback-value=gecko1_8 / !-- this line is not actually necessary unless you want to use a string other than 'unknown', and won't work before the above patch -- set-property-fallback name=user.agent value=unknown/ !-- 'most of the time' we want ff, except for a warning when the page boots. -- !-- To achieve that, we create a second entrypoint that extends the real one, but also displays a warning about this browser being unsupported -- replace-with class=pack.age.to.client.UnknownBrowserEntryPoint when-type-is class=pack.age.to.client.RealAppEntryPoint / /replace-with Thomas, were you suggesting a filter in GWT itself to let the server do this, or to have an 'UnknownUserAgentEntryPoint' built into GWT itself? On Saturday, May 10, 2014 5:27:37 PM UTC-5, Thomas Broyer wrote ...snip... That said, Google Groups and Google Flight Search fallback to the gecko1_8 permutation in Opera 12 (with a warning message that it might break), so we should probably make it possible at least (Google uses a server-side selection script based on the User-Agent request header, rather than the *.nocache.js using navigator.userAgent on the client-side) Would you mind opening an issue about it? Maybe there's a workaround though: it might be as easy as defining a unknown (the value returned by the property generator) value for the user.agent property that falls back to gecko1_8 (just like ie9 falls back to ie8): i.e. extend-property name=user.agent values=unknown fallback-value=gecko1_8 /; and then you could use deferred-binding specifically for that unknown value to display a warning message, and you could collapse unknown and gecko1_8 values into the same permutation. Worth a try IMO if you care about it. On Friday, May 9, 2014 8:14:55 PM UTC+2, Robert J. Carr wrote: This just burned me. Just curious why you couldn't have it load the file from firefox or webkit instead of just doing nothing? Better to deal with potential errors than to be a total non-starter. -- You received this message because you are subscribed to the Google Groups GWT Contributors group. To unsubscribe from this group and stop receiving emails from it, send an email to google-web-toolkit-contributors+unsubscr...@googlegroups.com. To view this discussion on the web visit https://groups.google.com/d/msgid/google-web-toolkit-contributors/de99d642-710b-44c9-8439-11a108d8e840%40googlegroups.com. For more options, visit https://groups.google.com/d/optout.
[gwt-contrib] Re: Officially deprecating Opera permutation
Sorry, that first line should say 'safari' (or any other valid user.agent value), not 'webkit'. Wishful thinking perhaps... set-property-fallback name=user.agent value=*safari*/ -- You received this message because you are subscribed to the Google Groups GWT Contributors group. To unsubscribe from this group and stop receiving emails from it, send an email to google-web-toolkit-contributors+unsubscr...@googlegroups.com. To view this discussion on the web visit https://groups.google.com/d/msgid/google-web-toolkit-contributors/92eace59-aa42-468c-823e-8c39dd82ff59%40googlegroups.com. For more options, visit https://groups.google.com/d/optout.
[gwt-contrib] Re: Officially deprecating Opera permutation
Google uses a server-side selection script based on the User-Agent request header, rather than the *.nocache.js using navigator.userAgent on the client-side) This sounds like a very nice optimisation. Do you know if there is any plugin for doing this in a servlet container /jsp? How could find/generate the mapping for user.agent - permutation Sorry for being offtopic. On Sunday, May 11, 2014 1:27:37 AM UTC+3, Thomas Broyer wrote: Opera on Linux is basically dead. There's not been a non-security-only or non-crash-fix-only release for 18 months (http://www.opera.com/docs/changelogs/unified/1210/) Opera has moved to Chromium for more than a year and still not released anything on Linux. Either they waited for the Aura port (first appearance in the latest Opera release, so maybe there'll be a Linux release soon, at last) or they just don't care. That said, Google Groups and Google Flight Search fallback to the gecko1_8 permutation in Opera 12 (with a warning message that it might break), so we should probably make it possible at least (Google uses a server-side selection script based on the User-Agent request header, rather than the *.nocache.js using navigator.userAgent on the client-side) Would you mind opening an issue about it? Maybe there's a workaround though: it might be as easy as defining a unknown (the value returned by the property generator) value for the user.agent property that falls back to gecko1_8 (just like ie9 falls back to ie8): i.e. extend-property name=user.agent values=unknown fallback-value=gecko1_8 /; and then you could use deferred-binding specifically for that unknown value to display a warning message, and you could collapse unknown and gecko1_8 values into the same permutation. Worth a try IMO if you care about it. On Friday, May 9, 2014 8:14:55 PM UTC+2, Robert J. Carr wrote: This just burned me. Just curious why you couldn't have it load the file from firefox or webkit instead of just doing nothing? Better to deal with potential errors than to be a total non-starter. -- You received this message because you are subscribed to the Google Groups GWT Contributors group. To unsubscribe from this group and stop receiving emails from it, send an email to google-web-toolkit-contributors+unsubscr...@googlegroups.com. To view this discussion on the web visit https://groups.google.com/d/msgid/google-web-toolkit-contributors/ec6b6be5-2c0e-4524-8f40-da6c557db576%40googlegroups.com. For more options, visit https://groups.google.com/d/optout.
[gwt-contrib] Re: Officially deprecating Opera permutation
Google uses a server-side selection script based on the User-Agent request header, rather than the *.nocache.js using navigator.userAgent on the client-side) This sounds like a very nice optimisation. Do you know if there is any plugin for doing this in a servlet container /jsp? How could find/generate the mapping for user.agent - permutation A custom GWT linker can probably do that. But keep in mind that you only gain some optimization if your app only uses deferred binding properties that are based on the browsers user agent string. Deferred binding properties that need information not available on the server (e.g. screen resolution) won't work unless you collapse them into a single permutation so that this permutation can then be detected again on the server. This might cost more than you gain. -- J. -- You received this message because you are subscribed to the Google Groups GWT Contributors group. To unsubscribe from this group and stop receiving emails from it, send an email to google-web-toolkit-contributors+unsubscr...@googlegroups.com. To view this discussion on the web visit https://groups.google.com/d/msgid/google-web-toolkit-contributors/cbd6c387-e99d-4b52-be66-ccb8e9f27e11%40googlegroups.com. For more options, visit https://groups.google.com/d/optout.
[gwt-contrib] Re: Officially deprecating Opera permutation
This just burned me. Just curious why you couldn't have it load the file from firefox or webkit instead of just doing nothing? Better to deal with potential errors than to be a total non-starter. -- You received this message because you are subscribed to the Google Groups GWT Contributors group. To unsubscribe from this group and stop receiving emails from it, send an email to google-web-toolkit-contributors+unsubscr...@googlegroups.com. To view this discussion on the web visit https://groups.google.com/d/msgid/google-web-toolkit-contributors/eb93ded0-b59e-4ad0-abf1-b8cef3e3c4af%40googlegroups.com. For more options, visit https://groups.google.com/d/optout.
[gwt-contrib] Re: Officially deprecating Opera permutation
Opera on Linux is basically dead. There's not been a non-security-only or non-crash-fix-only release for 18 months (http://www.opera.com/docs/changelogs/unified/1210/) Opera has moved to Chromium for more than a year and still not released anything on Linux. Either they waited for the Aura port (first appearance in the latest Opera release, so maybe there'll be a Linux release soon, at last) or they just don't care. That said, Google Groups and Google Flight Search fallback to the gecko1_8 permutation in Opera 12 (with a warning message that it might break), so we should probably make it possible at least (Google uses a server-side selection script based on the User-Agent request header, rather than the *.nocache.js using navigator.userAgent on the client-side) Would you mind opening an issue about it? Maybe there's a workaround though: it might be as easy as defining a unknown (the value returned by the property generator) value for the user.agent property that falls back to gecko1_8 (just like ie9 falls back to ie8): i.e. extend-property name=user.agent values=unknown fallback-value=gecko1_8 /; and then you could use deferred-binding specifically for that unknown value to display a warning message, and you could collapse unknown and gecko1_8 values into the same permutation. Worth a try IMO if you care about it. On Friday, May 9, 2014 8:14:55 PM UTC+2, Robert J. Carr wrote: This just burned me. Just curious why you couldn't have it load the file from firefox or webkit instead of just doing nothing? Better to deal with potential errors than to be a total non-starter. -- You received this message because you are subscribed to the Google Groups GWT Contributors group. To unsubscribe from this group and stop receiving emails from it, send an email to google-web-toolkit-contributors+unsubscr...@googlegroups.com. To view this discussion on the web visit https://groups.google.com/d/msgid/google-web-toolkit-contributors/14ee2afb-2e39-48b9-aeba-29291c384f10%40googlegroups.com. For more options, visit https://groups.google.com/d/optout.
