Override OnScrollPositionChanged() in ScrollState because we want to update
carets during scrolling in subframes without APZ.
Due to the observation in bug 1273045 comment 8, we do not distinguish
PositionChangedResult::NotChanged and PositionChangedResult::Changed.
Instead, we always update caret even if its position is not changed.
To avoid excessive CaretStateChangedEvents are dispatched in
OnScrollPositionChanged(), we add IsScrollStarted to distinguish whether
OnScrollStart() is called or not.
MozReview-Commit-ID: KNi9Mct4dSk
Add a pref "layout.accessiblecaret.always_show_when_scrolling" defaults
to true on all platforms except b2g. When it is set to false, the carets
will be hidden during scrolling, which is the current behavior before
applying this change.
The pref "layout.accessiblecaret.extendedvisibility" was added for
Fennec to keep ActionBar open when carets temporarily hiding during
panning or zooming. Now we make carets always show by default, so the
pref can be removed. However, the floating toolbar still need to be
notified when the scrolling begins, so we dispatch "scroll" instead.
In gtest, the preference changes were in the middle of the test
function. To make the preference change clearer, I add new pref changes
or move the existing ones to the beginning of the test functions.
The 250ms transition effect added in ua.css is per request of UX
designer in bug 1249201 comment 12.
MozReview-Commit-ID: 8NGvDLPbtNY
This is to support Firefox Android L style carets assets that the two
carets always look like tilt.
This patch is derived from a WIP patch by Mark Capella
<markcapella@twcny.rr.com>
MozReview-Commit-ID: H3nKLz6HcpM
After calling FlushLayout(), PresShell::Destroy() might be called and we
should consider PresShell and other resources will be no longer valid.
Before this patch, AccessibleCaretManager and AccessibleCaret(s) are
deallocated in PresShell::Destroy(). However FlushLayout() are all
invoked in AccessibleCaretManager, we need to keep manager alive to
clean up after PresShell::Destroy().
This patch makes AccessibleCaretManager live after PresShell::Destroy(),
and use IsTerminated() to check whether PreShell is vaild after each
FlushLayout() calls.
Note that event though AccessibleCaretEventHub will be unref in
PresShell::Destroy(), all the callers to AccessibleCaretEventHub's
public methods already add a ref to AccessibleCaretEventHub. So we don't
need to worry about AccessibleCaretEventHub and AccessibleCaretManager
die immediately after PresShell::Destroy().
MozReview-Commit-ID: DDpXZ7v3zyo
Fennec enables sCaretsExtendedVisibility which uses
Appearance::NormalNotShown instead of Appearance::None to keep actionbar
shown during scrolling. This breaks selection mode update when the
positions of the carets are not changed after scrolling.
To fix this, we need to implement appearance recovering for selection
mode scrolling like we did for cursor mode in bug 1212732, and make
UpdateCaretsForSelectionMode() respects UpdateCaretsHint.
MozReview-Commit-ID: LkfUIGKHL0h
After calling FlushLayout(), PresShell::Destroy() might be called and we
should consider PresShell and other resources will be no longer valid.
Before this patch, AccessibleCaretManager and AccessibleCaret(s) are
deallocated in PresShell::Destroy(). However FlushLayout() are all
invoked in AccessibleCaretManager, we need to keep manager alive to
clean up after PresShell::Destroy().
This patch makes AccessibleCaretManager live after PresShell::Destroy(),
and use IsTerminated() to check whether PreShell is vaild after each
FlushLayout() calls.
Note that event though AccessibleCaretEventHub will be unref in
PresShell::Destroy(), all the callers to AccessibleCaretEventHub's
public methods already add a ref to AccessibleCaretEventHub. So we don't
need to worry about AccessibleCaretEventHub and AccessibleCaretManager
die immediately after PresShell::Destroy().
MozReview-Commit-ID: DDpXZ7v3zyo
Fennec enables sCaretsExtendedVisibility which uses
Appearance::NormalNotShown instead of Appearance::None to keep actionbar
shown during scrolling. This breaks selection mode update when the
positions of the carets are not changed after scrolling.
To fix this, we need to implement appearance recovering for selection
mode scrolling like we did for cursor mode in bug 1212732, and make
UpdateCaretsForSelectionMode() respects UpdateCaretsHint.
MozReview-Commit-ID: LkfUIGKHL0h
Currently, the caret in cursor mode is always hide after scrolling. I
think it's better to restore its appearance if it's logically visible
before scrolling. That is:
1) If the caret is logically visible (Normal or NormalNotShown) before
scrolling, update carets on scroll-end to show the caret again.
2) If the caret is hide due to timeout or blur, it should remain hidden
on scroll-end.
After HideCaret() is called via keyboard event,
OnScrollPositionChanged() still fire another CaretStateChanged event
even if the caret is hidden. We follow OnReflow() to update carets only
when carets are logically visible.
A test case:
1. Type a string on the rocketbar until the text is long enough to scroll.
2. Copy arbitrary string.
3. Tap on rocketbar to show caret, and move it to the end (within 15
seconds timeout)
4. Type a character.
The text selection dialog should not show.
We should dispatch CaretStateChanged event in OnReflow() in cursor mode
when the first caret's appearance is NormalNotShown. Otherwise the text
selection dialog won't update its position.
I now think that mLastUpdateCaretMode is an implementation detail. Test
it will make test and implementation coupled.
It's better to call EXPECT_EQ directly in test functions so that the
line number in test result will be accurate when things go wrong.
Add basic gtest to ensure AccessibleCaret and AccessibleCaretManager are
both testable. More tests to come.
Allow -Winconsistent-missing-override warning in gtest since MOCK_METHOD
does not have 'override' keyword. See bug 1169974.
