Introduce JoinStates (QFlags<JoinState>)

This required to change numeric values for JoinState enum; so anybody
who relied on them being 0-based and/or contiguous, beware.

1 files changed, 11 insertions, 4 deletions

diff --git a/joinstate.h b/joinstate.h
index d6c374d2..42613895 100644
--- a/joinstate.h
+++ b/joinstate.h
@@ -18,17 +18,21 @@
 
 #pragma once
 
+#include <QtCore/QFlags>
+
 #include <array>
 
 namespace QMatrixClient
 {
     enum class JoinState
     {
-        Join = 0,
-        Invite,
-        Leave
+        Join = 0x1,
+        Invite = 0x2,
+        Leave = 0x4
     };
 
+    Q_DECLARE_FLAGS(JoinStates, JoinState)
+
     // We cannot use REGISTER_ENUM outside of a Q_OBJECT and besides, we want
     // to use strings that match respective JSON keys.
     static const std::array<const char*, 3> JoinStateStrings
@@ -36,6 +40,9 @@ namespace QMatrixClient
 
     inline const char* toCString(JoinState js)
     {
-        return JoinStateStrings[size_t(js)];
+        size_t state = size_t(js), index = 0;
+        while (state >>= 1) ++index;
+        return JoinStateStrings[index];
     }
 }  // namespace QMatrixClient
+Q_DECLARE_OPERATORS_FOR_FLAGS(QMatrixClient::JoinStates)