Merge #14556: qt: fix confirmed transaction labeled "open" (#13299)

fb3ce75807c50055a97f573fc72bf44d997ea218 Don't label transactions "Open" while catching up (Hennadii Stepanov)

Pull request description:

  Fix #13299.

  Since the default `nSequence` is `0xFFFFFFFE` and locktime is enabled, the checking `wtx.is_final` is meaningless until the syncing has completed (ref: #1026).

  This PR makes the wallet mark a transaction "Unconfirmed" instead of misleading "Open for NNN more blocks" when syncing after a period of being offline.

  Before this PR (with the issue):
  ![screenshot from 2018-12-12 15-56-23](https://user-images.githubusercontent.com/32963518/49874288-cdd06880-fe26-11e8-8441-f3ceb479611b.png)

  With this PR (the issue has been resolved):
  ![screenshot from 2018-12-12 15-54-41](https://user-images.githubusercontent.com/32963518/49874336-e9d40a00-fe26-11e8-8c05-9aeee2eb1bba.png)

Tree-SHA512: 358ec83b43c266a4d32a37a79dda80e80d40a2b77ad38261c84a095e613399f674aa7184805b3f6310e51ddb83ae2636b8849fcc7c4333e1b3ecbb0f70ad86d3

src/chain.h

@@ -19,7 +19,7 @@
  * Maximum amount of time that a block timestamp is allowed to exceed the
  * current network-adjusted time before the block will be accepted.
  */
-static const int64_t MAX_FUTURE_BLOCK_TIME = 2 * 60 * 60;
+static constexpr int64_t MAX_FUTURE_BLOCK_TIME = 2 * 60 * 60;
 
 /**
  * Timestamp window used as a grace period by code that compares external
@@ -27,7 +27,13 @@ static const int64_t MAX_FUTURE_BLOCK_TIME = 2 * 60 * 60;
  * to block timestamps. This should be set at least as high as
  * MAX_FUTURE_BLOCK_TIME.
  */
-static const int64_t TIMESTAMP_WINDOW = MAX_FUTURE_BLOCK_TIME;
+static constexpr int64_t TIMESTAMP_WINDOW = MAX_FUTURE_BLOCK_TIME;
+
+/**
+ * Maximum gap between node time and block time used
+ * for the "Catching up..." mode in GUI.
+ */
+static constexpr int64_t MAX_BLOCK_TIME_GAP = 25 * 60;
 
 class CBlockFileInfo
 {

src/interfaces/wallet.cpp

@@ -343,7 +343,8 @@ public:
         return result;
     }
     bool tryGetTxStatus(const uint256& txid,
-        interfaces::WalletTxStatus& tx_status) override
+        interfaces::WalletTxStatus& tx_status,
+        int64_t& block_time) override
     {
         TRY_LOCK(::cs_main, locked_chain);
         if (!locked_chain) {
@@ -358,6 +359,7 @@ public:
             return false;
         }
         tx_status = MakeWalletTxStatus(mi->second);
+        block_time = ::chainActive.Tip()->GetBlockTime();
         return true;
     }
     WalletTx getWalletTxDetails(const uint256& txid,

src/interfaces/wallet.h

@@ -183,7 +183,8 @@ public:
 
     //! Try to get updated status for a particular transaction, if possible without blocking.
     virtual bool tryGetTxStatus(const uint256& txid,
-        WalletTxStatus& tx_status) = 0;
+        WalletTxStatus& tx_status,
+        int64_t& block_time) = 0;
 
     //! Get transaction details.
     virtual WalletTx getWalletTxDetails(const uint256& txid,

src/qt/bitcoingui.cpp

@@ -29,6 +29,7 @@
 #include <qt/macdockiconhandler.h>
 #endif
 
+#include <chain.h>
 #include <chainparams.h>
 #include <interfaces/handler.h>
 #include <interfaces/node.h>
@@ -1321,16 +1322,12 @@ void BitcoinGUI::setNumBlocks(int count, const QDateTime& blockDate, const QStri
 
     // Set icon state: spinning if catching up, tick otherwise
 #ifdef ENABLE_WALLET
-    if (walletFrame)
-    {
-        if(secs < 25*60) // 90*60 in bitcoin
-        {
+    if (walletFrame) {
+        if(secs < MAX_BLOCK_TIME_GAP) {
             modalOverlay->showHide(true, true);
             // TODO instead of hiding it forever, we should add meaningful information about MN sync to the overlay
             modalOverlay->hideForever();
-        }
-        else
-        {
+        } else {
             modalOverlay->showHide();
         }
     }

src/qt/transactionrecord.cpp

@@ -5,6 +5,7 @@
 
 #include <qt/transactionrecord.h>
 
+#include <chain.h>
 #include <consensus/consensus.h>
 #include <interfaces/wallet.h>
 #include <interfaces/node.h>
@@ -13,6 +14,7 @@
 
 #include <stdint.h>
 
+#include <QDateTime>
 
 /* Return positive answer if transaction should be shown in list.
  */
@@ -252,7 +254,7 @@ QList<TransactionRecord> TransactionRecord::decomposeTransaction(interfaces::Wal
     return parts;
 }
 
-void TransactionRecord::updateStatus(const interfaces::WalletTxStatus& wtx, int numBlocks, int chainLockHeight)
+void TransactionRecord::updateStatus(const interfaces::WalletTxStatus& wtx, int numBlocks, int chainLockHeight, int64_t block_time)
 {
     // Determine transaction status
 
@@ -269,10 +271,9 @@ void TransactionRecord::updateStatus(const interfaces::WalletTxStatus& wtx, int
     status.lockedByChainLocks = wtx.is_chainlocked;
     status.lockedByInstantSend = wtx.is_islocked;
 
-    if (!wtx.is_final)
-    {
-        if (wtx.lock_time < LOCKTIME_THRESHOLD)
-        {
+    const bool up_to_date = ((int64_t)QDateTime::currentMSecsSinceEpoch() / 1000 - block_time < MAX_BLOCK_TIME_GAP);
+    if (up_to_date && !wtx.is_final) {
+        if (wtx.lock_time < LOCKTIME_THRESHOLD) {
             status.status = TransactionStatus::OpenUntilBlock;
             status.open_for = wtx.lock_time - numBlocks;
         }

src/qt/transactionrecord.h

@@ -161,7 +161,7 @@ public:
 
     /** Update status from core wallet tx.
      */
-    void updateStatus(const interfaces::WalletTxStatus& wtx, int numBlocks, int chainLockHeight);
+    void updateStatus(const interfaces::WalletTxStatus& wtx, int numBlocks, int chainLockHeight, int64_t block_time);
 
     /** Return whether a status update is needed.
      */

src/qt/transactiontablemodel.cpp

@@ -199,8 +199,9 @@ public:
             // try to update the status of this transaction from the wallet.
             // Otherwise, simply re-use the cached status.
             interfaces::WalletTxStatus wtx;
-            if (rec->statusUpdateNeeded(numBlocks, parent->getChainLockHeight()) && wallet.tryGetTxStatus(rec->hash, wtx)) {
-                rec->updateStatus(wtx, numBlocks,  parent->getChainLockHeight());
+            int64_t block_time;
+            if (rec->statusUpdateNeeded(numBlocks, parent->getChainLockHeight()) && wallet.tryGetTxStatus(rec->hash, wtx, block_time)) {
+                rec->updateStatus(wtx, numBlocks,  parent->getChainLockHeight(), block_time);
             }
             return rec;
         }