Road to v1 begins!

2026-02-25 13:04:07 +08:00 · 2014-04-20 16:57:38 -04:00
parent 06d1358fd1
commit 1743b8379b
92 changed files with 863 additions and 898 deletions
--- a/NTwain/Internals/TentativeStateCommitable.cs
+++ b/NTwain/Internals/TentativeStateCommitable.cs
@@ -0,0 +1,42 @@
+namespace NTwain.Internals
+{
+    class TentativeStateCommitable : ICommittable
+    {
+        bool _commit;
+        ITwainStateInternal _session;
+        int _origState;
+        int _newState;
+        public TentativeStateCommitable(ITwainStateInternal session, int newState)
+        {
+            _session = session;
+            _origState = session.State;
+            _newState = newState;
+            _session.ChangeState(newState, false);
+        }
+
+        #region ICommitable Members
+
+        public void Commit()
+        {
+            if (_session.State == _newState)
+            {
+                _session.ChangeState(_newState, true);
+            }
+            _commit = true;
+        }
+
+        #endregion
+
+        #region IDisposable Members
+
+        public void Dispose()
+        {
+            if (!_commit && _session.State == _newState)
+            {
+                _session.ChangeState(_origState, false);
+            }
+        }
+
+        #endregion
+    }
+}