This patch makes `nsContentUtils::DispatchInputEvent()` dispatch `beforeinput`
event too. And also adds `onbeforeinput` event handler which is really
important for feature detection (although Chrome has not implemented this
attribute yet: https://bugs.chromium.org/p/chromium/issues/detail?id=947408).
However, we don't implement `InputEvent.getTargetRanges()` in this bug and
implementing `beforeinput` event may hit bugs of some web apps. Therefore,
this patch disables `beforeinput` event by default even in Nightly channel.
Differential Revision: https://phabricator.services.mozilla.com/D58125
--HG--
extra : moz-landing-system : lando
This patch makes `nsContentUtils::DispatchInputEvent()` dispatch `beforeinput`
event too. And also adds `onbeforeinput` event handler which is really
important for feature detection (although Chrome has not implemented this
attribute yet: https://bugs.chromium.org/p/chromium/issues/detail?id=947408).
However, we don't implement `InputEvent.getTargetRanges()` in this bug and
implementing `beforeinput` event may hit bugs of some web apps. Therefore,
this patch disables `beforeinput` event by default even in Nightly channel.
Differential Revision: https://phabricator.services.mozilla.com/D58125
--HG--
extra : moz-landing-system : lando
The VisualViewport events are all nice and shiny, but unfortunately not quite
what is needed for the session store.
Firstly, the spec wants the "scroll" event to be fired only when the *relative*
offset between visual and layout viewport changes. The session store however
records the absolute offset and as such is interested in when *that* changes.
Secondly, again as per the spec the events don't bubble, and with the default
DOMEventTargetHelper implementation they don't escape the VisualViewport during
capturing, either. This means that any event listener must be added directly on
the VisualViewport itself in order to capture any events.
This might have been intended because the events use the same names as the
normal "scroll"/"resize" events, and as such you cannot specify separate event
listeners for VisualViewport and non-VisualViewport "scroll" events if both
events end up being dispatched to the same element (you can only try to filter
after the fact by looking at the originalTarget of the event).
At the same time, the VisualViewport is attached to the inner Window, and so
each time you navigate, you also get a different VisualViewport object.
All of this might be totally fine from the perspective of a page script, because
in that case you won't care anyway about what happens when the current page goes
away.
From the session store perspective on the other hand (especially Fennec's non-
e10s session store design), this is rather unfortunate because we don't want to
have to keep registering event listeners
a) manually for each subframe
b) each time the page navigates
The event target chain problem could be solved by letting the scroll events
escape the VisualViewport during the capturing phase (which the spec doesn't say
anything about), but this would mean that any scroll listener attached to a
window/browser/... that uses capturing will now catch both layout and visual
viewport scroll events.
In some cases this might even be beneficial, but in others (e.g. bug 1498812
comment 21) I'd like to specifically decide which kind of scroll event to
capture. Having to look at event.originalTarget to distinguish the two kinds
might be defensible in test code, but in case this distinction would be needed
in production code as well, given the existence of a C++-based filtering helper
in nsSessionStoreUtils for another use case where (scroll) events need to be
filtered, JS-based scroll event filtering might be a bad idea.
Additionally, in any case this wouldn't solve the fundamental conflict between
the spec and the session store about *when* the "scroll" event should be fired
in the first place.
Hence I'd like to introduce a separate set of events with distinct event names,
which will be dispatched according to the requirements of our internal users
(i.e. currently the session store). To avoid potential web compatibility issues
down the road, for now these events will be dispatched only to event listeners
registered in the system group (allowing *all* Chrome event listeners cannot be
done because checking the Chrome status of each event target might be too
expensive for frequently dispatched events).
Differential Revision: https://phabricator.services.mozilla.com/D14046
--HG--
extra : moz-landing-system : lando
The problem is, only when requesting IME to commit or cancel composition is handled synchronously, TabParent does not send the dispatched eCompositionCommit(AsIs) event to the remote process. Therefore, TabParent (and ContentCacheInParent) never receives the message from the remote process.
This patch makes TabChild notifies TabParent of eCompositionCommitRequestHandled special event message after TabChild dispatches eCompositionCommit into the DOM tree. Then, ContentCacheInParent should decrease mPendingCompositionCount and mPendingEventsNeedingAck as usual composition event messages.
MozReview-Commit-ID: 7ec5HPiE687
--HG--
extra : rebase_source : a9366abf6f8feec2d6ac639fd37f5b5c6ddd9586
This patch adds a new non-DOM event type, "mousetouchdrag". The name is horrible, I
know. The "mouse" comes from the fact that it's a WidgetMouseEvent, and the
"touchdrag" comes from the fact that this event is fired at the start of a touch
gesture for drag-and-drop. Right now this event is only fired from the Windows
widget code, when we receive a touch-source doubleclick event from the OS. This
event is sent to us from the OS when it detects the sequence "touchstart, touchend,
touchstart" within certain time/distance constraints. Eventually we may detect
similar gestures for other platforms in the APZ GestureEventListener and dispatch
the "mousetouchdrag" event for those as well.
The only effect of this event is that it begins tracking a drag gesture in the
EventStateManager. Subsequent touchmove events can begin the actual drag-and-drop
operation by calling ::DoDragDrop. See the discussion in bug 1147335 for some
important caveats about DoDragDrop and how it only works with left-mouse-button
events (real or synthetic).
MozReview-Commit-ID: bGyOk6dRoJ
We moved 'transitioncancel' event to the CSS-Transition Level 1.
The definition of 'transitioncancel' is as follow:
https://drafts.csswg.org/css-transitions-1/#transitioncancle
MozReview-Commit-ID: 1rEH0KjBrlL
--HG--
extra : rebase_source : c1d6ba635dd23cafcd0352b35e6c6cc714bb3ac4
After click events with button 2 or 3 are fired, fire auxclick, a new
event intended to represent a non-primary mouse click. Because this
event, based on the design examples and blink's implementation, is
intended to be used with content listeners, always dispatch on content
listeners--not just those that force all events to be dispatched (i.e.
document/window). This diverges from the behavior of our click events
from non-primary buttons.
Eventually, we hope this will replace click events for non-primary
buttons. For now, leave those events for compatibility reasons.
Additionally, add handling of this new event, where necessary.
MozReview-Commit-ID: 8osozM4h6Ya
--HG--
extra : rebase_source : 558261dd0d0b9241efa84ca168c50455850af03a
Blink and webkit launch focusin after focus and focusout after blur. Despite
this contradiction with the spec, it is best to mirror this new way, as there
is little guidance or existing code to clarify implementation amiguities that
can arise from the spec.
If focus/blur is fired on a window or document, or the event triggers a change
of focus, do not fire the corresponding focusin/focusout. Otherwise, always
fire the corresponding event.
Additionally, add a mochitest and a w3c-platform-test.
MozReview-Commit-ID: AgQ8JBxKIqK
This transitionstart and transitionrun event is defined in
editor's draft of CSS Transition Level 2.
https://drafts.csswg.org/css-transitions-2/#transition-events
MozReview-Commit-ID: 6c0GqlaOOPZ
--HG--
extra : rebase_source : 9d16572634a388da25e16096f06087e808ec57ae
Masayuki Nakano
Razvan Maries
John Dai
Narcis Beleuzu
Cosmin Sabou
alwu
Edgar Chen
Ryan Hunt
Ehsan Akhgari
Jan Henning
Sylvestre Ledru
Brian Grinstead
Andrea Marchesini
Sebastian Hengst
kevin
Nicholas Nethercote
Stone Shih
Makoto Kato
Mantaroh Yoshinaga
Kearwood (Kip) Gilbert
Tim Nguyen
Kartikaya Gupta
Daosheng Mu
Kevin Wern
Michelangelo De Simone
Marcos Caceres
Kirk Steuber
Ben Tian
Wes Kocher
kearwood
Xidorn Quan
Jimmy Wang
Carsten "Tomcat" Book