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Issue #1682 - Remove vibrator DOM interface and support code.

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Resolves #1682
This commit is contained in:
Moonchild 2020-11-13 13:33:08 +00:00 • committed by roytam1
commit 6d5eda3010
28 changed files with 4 additions and 967 deletions
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79
hal/Hal.cpp
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@ -94,87 +94,8 @@ WindowIsActive(nsPIDOMWindowInner* aWindow)
return !document->Hidden();
}
StaticAutoPtr<WindowIdentifier::IDArrayType> gLastIDToVibrate;
void InitLastIDToVibrate()
{
gLastIDToVibrate = new WindowIdentifier::IDArrayType();
ClearOnShutdown(&gLastIDToVibrate);
}
} // namespace
void
Vibrate(const nsTArray<uint32_t>& pattern, nsPIDOMWindowInner* window)
{
Vibrate(pattern, WindowIdentifier(window));
}
void
Vibrate(const nsTArray<uint32_t>& pattern, const WindowIdentifier &id)
{
AssertMainThread();
// Only active windows may start vibrations. If |id| hasn't gone
// through the IPC layer -- that is, if our caller is the outside
// world, not hal_proxy -- check whether the window is active. If
// |id| has gone through IPC, don't check the window's visibility;
// only the window corresponding to the bottommost process has its
// visibility state set correctly.
if (!id.HasTraveledThroughIPC() && !WindowIsActive(id.GetWindow())) {
HAL_LOG("Vibrate: Window is inactive, dropping vibrate.");
return;
}
if (!InSandbox()) {
if (!gLastIDToVibrate) {
InitLastIDToVibrate();
}
*gLastIDToVibrate = id.AsArray();
}
// Don't forward our ID if we are not in the sandbox, because hal_impl
// doesn't need it, and we don't want it to be tempted to read it. The
// empty identifier will assert if it's used.
PROXY_IF_SANDBOXED(Vibrate(pattern, InSandbox() ? id : WindowIdentifier()));
}
void
CancelVibrate(nsPIDOMWindowInner* window)
{
CancelVibrate(WindowIdentifier(window));
}
void
CancelVibrate(const WindowIdentifier &id)
{
AssertMainThread();
// Although only active windows may start vibrations, a window may
// cancel its own vibration even if it's no longer active.
//
// After a window is marked as inactive, it sends a CancelVibrate
// request. We want this request to cancel a playing vibration
// started by that window, so we certainly don't want to reject the
// cancellation request because the window is now inactive.
//
// But it could be the case that, after this window became inactive,
// some other window came along and started a vibration. We don't
// want this window's cancellation request to cancel that window's
// actively-playing vibration!
//
// To solve this problem, we keep track of the id of the last window
// to start a vibration, and only accepts cancellation requests from
// the same window. All other cancellation requests are ignored.
if (InSandbox() || (gLastIDToVibrate && *gLastIDToVibrate == id.AsArray())) {
// Don't forward our ID if we are not in the sandbox, because hal_impl
// doesn't need it, and we don't want it to be tempted to read it. The
// empty identifier will assert if it's used.
PROXY_IF_SANDBOXED(CancelVibrate(InSandbox() ? id : WindowIdentifier()));
}
}
template <class InfoType>
class ObserversManager
{