[Port of https://github.com/firebase/firebase-js-sdk/commit/0fa319e5e019dd0d40ab441d2ff9f8f6d4724e43]
* Refactored FSTOnlineState tracking out of FSTRemoteStore and into new
FSTOnlineStateTracker component.
* Added a 10 second timeout to transition from OnlineState.Unknown to
OnlineState.Offline rather than waiting indefinitely for the stream to
succeed or fail.
* Removed hack to run SpecTests using an FSTDispatchQueue that wrapped
dispatch_get_main_queue(). This was incompatible with [FSTDispatchQueue
runDelayedCallbacksUntil:] since it queues work and blocks waiting for
it to complete. Now spec tests create / use a proper FSTDispatchQueue.
* Added a SpecTest to verify OnlineState timeout behavior.
* Misc cleanup:
* Renamed FSTOnlineState states: Failed => Offline, Healthy => Online
* Renamed FSTTimerIds (ListenStreamConnection => ListenStreamConnectionBackoff)
* Added ability to run timers from spec tests.
* Plumbs FSTOnlineState changes through to views.
* View sets this.current to false on FSTOnlineStateFailed, triggering
isFromCache=true events. It will automatically be returned to true
once the listen is reestablished and we get a new CURRENT message.
* Updated tests (and added one new one) to verify behavior.
* Unifies setOnlineStateToUnknown, setOnlineStateToHealthy, and
updateAndBroadcastOnlineState into a single updateOnlineState
method.
* Split disableNetwork into (public) disableNetwork and
(private) disableNetworkWithTargetOnlineState methods..
* Some miscellaneous comment cleanup.
* Add missing comment per CR feedback.
This simplifies the import process back into google3 and allows us to add additional directories to the project without needing to update the project files for each directory we add. This shows up most clearly in the change to Firestore/Example/Firestore.xcodeproj/project.pbxproj: this no longer needs to list essentially every directory in the project as a header search path.
* Clang-format configuration for C++ files
* Add support C++-only sources to the podspec
* Podspec support for fully qualified imports
* xcodeproj changes for fully-qualified imports
* Use fully-qualified imports in Firestore sources
Michael Lehenbauer