Initial work on threaded task, with an implementation of Table Content view data loading:

 - Removal of AMIndeterminateProgressIndicatorCell, and addition of a custom fork of YRKSpinningProgressIndicator which fixes bugs, adds threaded drawing, and adds a determinate mode.
 - Addition of a task system within TableDocument, triggering display of a large central progress indicator and stopping the window from being interacted with in any way that would cause a query while the task is running.
 - Add threaded TableContent content fetching, including use of the new task system and determinate progress bar; make fixes to improve threading stability and interaction.

1 files changed, 2 insertions, 0 deletions

diff --git a/Source/SPConstants.m b/Source/SPConstants.m
index b2a88ee1..91ae17b1 100644
--- a/Source/SPConstants.m
+++ b/Source/SPConstants.m
@@ -92,3 +92,5 @@ NSString *SPQueryFavorites                       = @"queryFavorites";
 NSString *SPFavorites                            = @"favorites";
 NSString *SPTableColumnWidths                    = @"tableColumnWidths";
 NSString *SPQueryHistory                         = @"queryHistory";
+NSString *SPDocumentTaskStartNotification        = @"DocumentTaskStarted";
+NSString *SPDocumentTaskEndNotification          = @"DocumentTaskEnded";