This patch prevents the Windows widget code from dispatching the contextmenu
event if APZ is handling touch input. Instead, the APZ code processes the
raw touch input, and will fire a contextmenu event when the user lifts their
finger after a long-press action, in keeping with the Windows platform
convention. Doing it this way also allows us to respect web conventions where
the web content can prevent the contextmenu event from firing by calling
preventDefault on the touchstart event; this was not possible when dispatching
the contextmenu event directly from the widget code.
This also makes long-pressing on browser chrome components work properly, as
it just shifts the point in time that the contextmenu event is fired without
changing any of the code that triggers the XUL popup. However, some changes
were needed to have the widget code ignore the synthetic mouse events that
the Windows platform sends us, because those would otherwise immediately
dismiss the contextmenu popup after it appeared.
MozReview-Commit-ID: 9HFZLC6xUAi
This patch does the following.
- Removes the return value, because none of the call sites check it.
- Removes the empty implementations from several nsIWidget instances, because
they can use the nsBaseWidget one.
This patch does the following.
- Removes the return value, because none of the call sites check it.
- Puts an empty implementation into nsBaseWidget.
- Removes the empty implementations from several nsIWidget instances, because
they can use the nsBaseWidget one.
This patch does the following.
- Removes the return value, because none of the call sites check it.
- Removes the empty implementations from several nsIWidget instances, because
they can use the nsBaseWidget one.
This patch does the following.
- Removes the return value, because none of the call sites check it.
- Puts an empty implementation into nsBaseWidget.
- Removes the empty implementations from several nsIWidget instances, because
they can use the nsBaseWidget one.
This patch does the following.
- Removes the return value, because none of the call sites check it.
- Puts an empty implementation into nsBaseWidget.
- Removes the empty implementations from several nsIWidget instances, because
they can use the nsBaseWidget one.
Its return value is only checked in one low-value assertion.
The patch also does the following.
- Removes the Android and GTK overloadings of EnableDragDrop(), which are
identical to the nsBaseWidget one.
- Streamlines the Windows implementation: fixes the indentation and takes
advantage of infallible |new|.
The only implementation of SetSizeMode() that can fail is the nsCocoaWindow
one, on an Objective C exception, which is unlikely and can be swallowed.
This allows some nsGlobalWindow functions to become infallible as well.
This patch makes GetBounds(), GetScreenBounds() and GetClientBounds() more
obviously infallible, like existing functions such as GetNaturalBounds() and
GetClientSize(). This results in clearer behaviour in nsCocoaWindow.mm if
Objective C exceptions occur. Along the way, the patch removes some useless
failure checks for these functions.
The patch also removes the NS_IMETHOD from GetRestoredBounds and makes that
function MOZ_MUST_USE.
This also modifies the windows widget code to use this new helper function, as
it avoids an unnecessary round-trip where a MultiTouchInput gets converted to
a WidgetTouchEvent (in nsWindow.cpp) and then back to a MultiTouchInput (in
APZCTreeManager.cpp)
MozReview-Commit-ID: 1WGbfINTW6c
This patch stops the widget code from passing along touch-derived contextmenu
events straight from Windows to Gecko, and instead lets the APZ gesture
detection code handle it. This allows the contextmenu event to be prevented
according to web standards, e.g. if the touchstart event is cancelled.
This changes to browser.js will affect both Linux and Windows, but the behaviour
implemented is in line with native Windows touch behaviour. We may want to
add an alternate codepath for Linux to better simulate "native" Linux behavior,
if there is such a thing for touch-derived contextmenu.
MozReview-Commit-ID: 18qzK15ic8E
