Drop upgrade-cancel callback registration for a generic "resumeable"

Instead of passing a StartShutdown reference all the way up from
txdb, give ShowProgress a "resumeable" boolean, which is used to
inform the user if the action will be resumed, but cancel is always
allowed by just calling StartShutdown().

1 files changed, 5 insertions, 5 deletions

diff --git a/src/ui_interface.h b/src/ui_interface.h
index 762dd19b19..7f68c578ee 100644
--- a/src/ui_interface.h
+++ b/src/ui_interface.h
@@ -94,11 +94,11 @@ public:
     /** A wallet has been loaded. */
     boost::signals2::signal<void (CWallet* wallet)> LoadWallet;
 
-    /** Show progress e.g. for verifychain */
-    boost::signals2::signal<void (const std::string &title, int nProgress)> ShowProgress;
-
-    /** Set progress break action (possible "cancel button" triggers that action) */
-    boost::signals2::signal<void (std::function<void(void)> action)> SetProgressBreakAction;
+    /**
+     * Show progress e.g. for verifychain.
+     * resume_possible indicates shutting down now will result in the current progress action resuming upon restart.
+     */
+    boost::signals2::signal<void (const std::string &title, int nProgress, bool resume_possible)> ShowProgress;
 
     /** New block has been accepted */
     boost::signals2::signal<void (bool, const CBlockIndex *)> NotifyBlockTip;