nsFrameSelection::CommonPageMove() is called only by
nsTextInputSelectionImpl::PageMove() and PresShell::PageMove(). So, this is
the only implementation of (Shift+) PageDown and (Shift+) PageUp.
This scrolls down/up the specific frame. However, this allows to scroll
outside of selection limiter, for example, even when an editing host is
focused, its parent scrollable element may be scrolled. This is same behavior
as Blink so that we should keep this behavior.
However, it also emulates to click same position after scroll and this behavior
is different from Blink. At this time, it does not check selection limiter and
then, nsFrameSelection::HandleClick() may reset selection limiter the scrolled
frame is a parent frame of the limiter.
Therefore, this patch makes it check if the scrolled frame is a parent of the
limiter, and if so, use result of GetFrameToPageSelect() to emulate a click
instead. The result won't be a parent of the limiter because it is used when
handling Shift + PageDown and Shift + PageUp which are always handled in the
limiter.
Differential Revision: https://phabricator.services.mozilla.com/D13202
--HG--
extra : moz-landing-system : lando
There's a few subtle behavior changes here, which I'll try to break down in the
commit message.
The biggest one is the EditableDescendantCount stuff going away. This
was added in bug 1181130, to prevent clicking on the non-editable div from
selecting the editable div inside. This is problematic for multiple reasons:
* First, I don't think non-editable regions of an editable element should
be user-select: all.
* Second, it just doesn't work in Shadow DOM (the editable descendant count is
not kept up-to-date when not in the uncomposed doc), so nested
contenteditables behave differently inside vs. outside a Shadow Tree.
* Third, I think it's user hostile to just entirely disable selection if you
have a contenteditable descendant as a child of a user-select: all thing.
WebKit behaves like this patch in the following test-case (though not Blink):
https://crisal.io/tmp/user-select-all-contenteditable-descendant.html
Edge doesn't seem to support user-select: all at all (no pun intended).
But we don't allow to select anything at all which looks wrong.
* Fourth, it's not tested at all (which explains how we broke it in Shadow DOM
and not even notice...).
In any case I've verified that this doesn't regress the editor from that bug. If
this regresses anything we can fix it as outlined in the first bullet point
above, which should also make us more compatible with other UAs in that
test-case.
The other change is `all` not overriding everything else. So, something like:
<div style="-webkit-user-select: all">All <div style="-webkit-user-select: none">None</div></div>
Totally ignores the -webkit-user-select: none declaration in Firefox before this
change. This doesn't match any other UA nor the spec, and this patch aligns us
with WebKit / Blink.
This in turn makes us not need -moz-text anymore, whose only purpose was to
avoid this.
This also fixes a variety of bugs uncovered by the previous changes, like the
SetIgnoreUserModify(false) call in editor being completely useless, since
presShell->SetCaretEnabled ended in nsCaret::SetVisible, which overrode it.
This in turn uncovered even more bugs, from bugs in the caret painting code,
like not checking -moz-user-modify on the right frame if you're the last frame
of a line, to even funnier bits where before this patch you show the caret but
can't write at all...
In any case, the new setup I came up with is that when you're editing (the
selection is focused on an editable node) moving the caret forces it to end up
in an editable node, thus jumping over non-editable ones.
This has the nice effect of not completely disabling selection of
-moz-user-select: all elements that have editable descendants (which was a very
ad-hoc hack for bug 1181130, and somewhat broken per the above), and also
not needing the -moz-user-select: all for non-editable bits in contenteditable.css
at all.
This also fixes issues with br-skipping like not being able to insert content in
the following test-case:
<div contenteditable="true"><span contenteditable="false">xyz </span><br>editable</div>
If you start moving to the left from the second line, for example.
I think this yields way better behavior in all the relevant test-cases from bug
1181130 / bug 1109968 / bug 1132768, shouldn't cause any regression, and the
complexity is significantly reduced in some places.
There's still some other broken bits that this patch doesn't fix, but I'll file
follow-ups for those.
Differential Revision: https://phabricator.services.mozilla.com/D12687
--HG--
extra : moz-landing-system : lando
There's a few subtle behavior changes here, which I'll try to break down in the
commit message.
The biggest one is the EditableDescendantCount stuff going away. This
was added in bug 1181130, to prevent clicking on the non-editable div from
selecting the editable div inside. This is problematic for multiple reasons:
* First, I don't think non-editable regions of an editable element should
be user-select: all.
* Second, it just doesn't work in Shadow DOM (the editable descendant count is
not kept up-to-date when not in the uncomposed doc), so nested
contenteditables behave differently inside vs. outside a Shadow Tree.
* Third, I think it's user hostile to just entirely disable selection if you
have a contenteditable descendant as a child of a user-select: all thing.
WebKit behaves like this patch in the following test-case (though not Blink):
https://crisal.io/tmp/user-select-all-contenteditable-descendant.html
Edge doesn't seem to support user-select: all at all (no pun intended).
But we don't allow to select anything at all which looks wrong.
* Fourth, it's not tested at all (which explains how we broke it in Shadow DOM
and not even notice...).
In any case I've verified that this doesn't regress the editor from that bug. If
this regresses anything we can fix it as outlined in the first bullet point
above, which should also make us more compatible with other UAs in that
test-case.
The other change is `all` not overriding everything else. So, something like:
<div style="-webkit-user-select: all">All <div style="-webkit-user-select: none">None</div></div>
Totally ignores the -webkit-user-select: none declaration in Firefox before this
change. This doesn't match any other UA nor the spec, and this patch aligns us
with WebKit / Blink.
This in turn makes us not need -moz-text anymore, whose only purpose was to
avoid this.
This also fixes a variety of bugs uncovered by the previous changes, like the
SetIgnoreUserModify(false) call in editor being completely useless, since
presShell->SetCaretEnabled ended in nsCaret::SetVisible, which overrode it.
This in turn uncovered even more bugs, from bugs in the caret painting code,
like not checking -moz-user-modify on the right frame if you're the last frame
of a line, to even funnier bits where before this patch you show the caret but
can't write at all...
In any case, the new setup I came up with is that when you're editing (the
selection is focused on an editable node) moving the caret forces it to end up
in an editable node, thus jumping over non-editable ones.
This has the nice effect of not completely disabling selection of
-moz-user-select: all elements that have editable descendants (which was a very
ad-hoc hack for bug 1181130, and somewhat broken per the above), and also
not needing the -moz-user-select: all for non-editable bits in contenteditable.css
at all.
This also fixes issues with br-skipping like not being able to insert content in
the following test-case:
<div contenteditable="true"><span contenteditable="false">xyz </span><br>editable</div>
If you start moving to the left from the second line, for example.
I think this yields way better behavior in all the relevant test-cases from bug
1181130 / bug 1109968 / bug 1132768, shouldn't cause any regression, and the
complexity is significantly reduced in some places.
There's still some other broken bits that this patch doesn't fix, but I'll file
follow-ups for those.
Differential Revision: https://phabricator.services.mozilla.com/D12687
--HG--
extra : moz-landing-system : lando
PresShell::PageMove() climbs up to parent document when there is no scrollable
parent in current document. However, if aExtend is true, it should expand
Selection in the document itself. Therefore, it needs different rules to
look for container of expanding Selection from scrollable element to scroll.
Additionally, old rules (i.e., before the fix of bug 1369072 which caused
this regression) were also buggy. It used parent scrollable element or
root scrollable element simply. Therefore, if found scrollable element is
ancestor of selection limiter, it didn't work as expected.
This patch creates nsFrameSelection::GetFrameToPageSelect() to retrieve
per-page selection container element with the following rules:
- look for a scrollable element in selection limiter.
- if there is no scrollable element, use selection limiter.
- if there is no selection limiter, use the root frame.
So, nsFrameSelection::CommonPageMove() should take nsIFrame rather than
nsIScrollableFrame since container of per-page selection may be used in
non-scrollable contenteditable element. If it's called with non-scrollable
frame, it needs to compute the expanding range with the frame size.
Differential Revision: https://phabricator.services.mozilla.com/D8954
--HG--
extra : moz-landing-system : lando
SelectionChangeListener is an nsISelectionListener class. This is added only
to Selection for "normal" and added by nsFrameSelection::Init() after
AccessibleCaretEventHub. So, we can make Selection directly treat
SelectionChangeListener.
Differential Revision: https://phabricator.services.mozilla.com/D4757
--HG--
extra : moz-landing-system : lando
AccessibleCaretEventHub is an nsISelectionListener of Selection whose type is
"normal". This is added only when nsFrameSelection::Init() is called and
accessible caret is enabled. Additionally, nsFrameSelection::Init() is
always called immediately after creating nsFrameSelection.
Therefore, when AccessibleCaretEventHub is installed to Selection, this is
always second selection listener and won't be installed multiple times. So,
Selection can store pointer of AccessibleCaretEventHub directly only when
it's enabled and the Selection needs to notify it of selection change.
This patch makes Selection stores AccessibleCaretEventHub with RefPtr, then,
makes Selection::NotifySelectionListeners() call its OnSelectionChange()
immediately after AutoCopyListener.
Unfortunately, this patch includes making of MOZ_CAN_RUN_SCRIPT_BOUNDARY and
MOZ_CAN_RUN_SCRIPT a lot since some methods of AccessibleCaretEventHub are
marked as MOZ_CAN_RUN_SCRIPT and including AccessibleCaretEventHub.h into
Selection.h causes compile the compile errors.
Differential Revision: https://phabricator.services.mozilla.com/D4733
--HG--
extra : moz-landing-system : lando
nsAutoCopyListener is a singleton class but refcountable and a selection
listener. nsFrameSelection adds it to only normal Selection when it's on
macOS or it's enabled by the pref. Additionally, it's always first selection
listener since it's added immediately after Selection instance is created.
So, we can make it a static class, and normal Selection instance should have
a bool to decide whether it should notify nsAutoCopyListener of its changes.
Then, we can save the cost of grabbing it with local RefPtr and the virtual
call.
Additionally, this patch renames nsAutoCopyListener to mozilla::AutoCopyListener
and optimizes constructor of nsFrameSelection (using bool var cache to retrieve
the pref, avoid retrieving the pref on macOS).
Differential Revision: https://phabricator.services.mozilla.com/D4504
--HG--
rename : layout/generic/nsAutoCopyListener.h => layout/generic/AutoCopyListener.h
extra : moz-landing-system : lando
This patch is an automatic replacement of s/NS_NOTREACHED/MOZ_ASSERT_UNREACHABLE/. Reindenting long lines and whitespace fixups follow in patch 6b.
MozReview-Commit-ID: 5UQVHElSpCr
--HG--
extra : rebase_source : 4c1b2fc32b269342f07639266b64941e2270e9c4
extra : source : 907543f6eae716f23a6de52b1ffb1c82908d158a
This was done automatically replacing:
s/mozilla::Move/std::move/
s/ Move(/ std::move(/
s/(Move(/(std::move(/
Removing the 'using mozilla::Move;' lines.
And then with a few manual fixups, see the bug for the split series..
MozReview-Commit-ID: Jxze3adipUh
This is mostly code removal, changing GetDisplayContentsStyle(..) checks by an
FFI call to Servo.
The tricky parts are:
* MaybeCreateLazily, which I fixed to avoid setting bits under display: none
stuff. This was a pre-existing problem, which was wallpapered by the
sc->IsInDisplayNoneSubtree() check, which effectively made the whole
assertion useless (see bug 1381017 for the only crashtest that hit this
though).
* ContentRemoved, where we can no longer know for sure whether the element is
actually display: contents if we're removing it as a response to a style
change. See the comment there. That kinda sucks, but that case is relatively
weird, and it's better than adding tons of complexity to handle that.
* GetParentComputedStyle, which also has a comment there. Also, this function
has only one caller now, so we should maybe try to remove it.
The different assertions after DestroyFramesForAndRestyle are changed for a
single assertion in the function itself, and the node bit used as an
optimization to avoid hashtable lookups is taken back.
MozReview-Commit-ID: AZm822QnhF9
Unfortunately this means that we need to export a couple more headers, but that
should be ok.
In particular, we have to export some headers that are #included by
nsCSSFrameConstructor.h, because nsCSSFrameConstructor.h itself will now be
included in more places outside of layout/, by .cpp files that don't necessarily
have the ability to indirectly #include its other headers, unless we export
them.
MozReview-Commit-ID: 2n9KHW6Yjrd
Most of them just want GetRootFrame(), and there's no need to explicitly go
through the frame manager for that, we have a handy alias in the shell.
MozReview-Commit-ID: GriEqkasidY
Now that accessing nsIContent slots is not a blob of virtual function calls, we
should be able to unify logic here, and speed up the not-so-rare case for
chrome, while keeping the usual case fast.
MozReview-Commit-ID: 87iY5Cbhx4T
It's good to save some copy constructor calls.
MozReview-Commit-ID: 6TveqwkOvc0
--HG--
extra : rebase_source : 02e678f985c074f6c972cf8478e233aa5e4607db
In this patch, we move the member assignments in nsFrameSelection's constructor
to nsFrameSelection's class definition. This is a pre-patch for switching
nsFrameSelection to use per-member defaults. With this patch, all the uninitialized
members can be tracked easily.
MozReview-Commit-ID: 1HhTDlV73QN
--HG--
extra : rebase_source : f97f7a46ba70e1f36f4812591d73b64061cf0c9e
Skip files under intl/icu/ because they're imported from third party.
DONTBUILD because this is a whitespace-only change.
MozReview-Commit-ID: GSd6oeFSTO7
--HG--
extra : rebase_source : 38c20bf6099c18b2fcb4c324d470b279addf8891
This patch was generated automatically by the "modeline.py" script, available
here: https://github.com/amccreight/moz-source-tools/blob/master/modeline.py
For every file that is modified in this patch, the changes are as follows:
(1) The patch changes the file to use the exact C++ mode lines from the
Mozilla coding style guide, available here:
https://developer.mozilla.org/en-US/docs/Mozilla/Developer_guide/Coding_Style#Mode_Line
(2) The patch deletes any blank lines between the mode line & the MPL
boilerplate comment.
(3) If the file previously had the mode lines and MPL boilerplate in a
single contiguous C++ comment, then the patch splits them into
separate C++ comments, to match the boilerplate in the coding style.
MozReview-Commit-ID: EuRsDue63tK
--HG--
extra : rebase_source : 3356d4b80ff6213935192e87cdbc9103fec6084c
(Path is actually r=froydnj.)
Bug 1400459 devirtualized nsIAtom so that it is no longer a subclass of
nsISupports. This means that nsAtom is now a better name for it than nsIAtom.
MozReview-Commit-ID: 91U22X2NydP
--HG--
rename : xpcom/ds/nsIAtom.h => xpcom/ds/nsAtom.h
extra : rebase_source : ac3e904a21b8b48e74534fff964f1623ee937c67
Sylvestre Ledru
Masayuki Nakano
Emilio Cobos Álvarez
Brindusan Cristian
Adrian Wielgosik
Chris Peterson
Boris Zbarsky
Jet Villegas
Andrea Marchesini
Botond Ballo
Ting-Yu Lin
Jeremy Chen
Mats Palmgren
Daniel Holbert
Nicholas Nethercote