options/value: add `QObject::connect` wrapper

This is useful not just to save on complexity in call sites, but also
because I plan on using the Verdigris library to remove needless
`valueChanged()` and `setValue()` overloads from each `value<t>`
instance.

Also fix a bug in `options/tie.hpp` where `QComboBox::setCurrentIndex`
was erroneously called as `Qt::DirectConnection`.

1 files changed, 11 insertions, 21 deletions

diff --git a/options/tie.hpp b/options/tie.hpp
index 46ade075..81567139 100644
--- a/options/tie.hpp
+++ b/options/tie.hpp
@@ -37,13 +37,9 @@ std::enable_if_t<std::is_enum_v<t>> tie_setting(value<t>& v, QComboBox* cb)
     cb->setCurrentIndex(cb->findData(int(static_cast<t>(v))));
     v = static_cast<t>(cb->currentData().toInt());
 
-    value_::connect(cb, static_cast<void (QComboBox::*)(int)>(&QComboBox::currentIndexChanged),
-                    &v, [&v, cb](int idx) { v = static_cast<t>(cb->itemData(idx).toInt()); },
-                    v.DIRECT_CONNTYPE);
-
-    value_::connect(&v, value_::value_changed<int>(),
-                    cb, [cb](int x) { cb->setCurrentIndex(cb->findData(x)); },
-                    v.SAFE_CONNTYPE);
+    v.connect_from(cb, static_cast<void(QComboBox::*)(int)>(&QComboBox::currentIndexChanged),
+                   [&v, cb](int idx) { v = static_cast<t>(cb->itemData(idx).toInt()); });
+    v.connect_to(cb, [cb](int x) { cb->setCurrentIndex(cb->findData(x)); });
 }
 
 template<typename t, typename From, typename To>
@@ -52,23 +48,20 @@ void tie_setting(value<t>& v, QComboBox* cb, From&& fn_to_index, To&& fn_to_valu
     cb->setCurrentIndex(fn_to_index(v));
     v = fn_to_value(cb->currentIndex(), cb->currentData());
 
-    value_::connect(cb, static_cast<void (QComboBox::*)(int)>(&QComboBox::currentIndexChanged),
-                    &v, [&v, cb, fn_to_value](int idx) { v = fn_to_value(idx, cb->currentData()); },
-                    v.DIRECT_CONNTYPE);
-    value_::connect(&v, value_::value_changed<t>(),
-                    cb, [cb, fn_to_index](detail::cv_qualified<t>& v) { cb->setCurrentIndex(fn_to_index(v)); },
-                    v.DIRECT_CONNTYPE);
+    v.connect_from(cb, static_cast<void(QComboBox::*)(int)>(&QComboBox::currentIndexChanged),
+                   [&v, cb, fn = std::forward<To>(fn_to_value)](int idx) { v = fn(idx, cb->currentData()); });
+    v.connect_to(cb, [cb, fn = std::forward<From>(fn_to_index)](detail::cv_qualified<t> v) { cb->setCurrentIndex(fn(v)); });
 }
 
 template<typename t, typename F>
 void tie_setting(value<t>& v, QLabel* lb, F&& fun)
 {
-    auto closure = [lb, fun](detail::cv_qualified<t> v) { lb->setText(fun(v)); };
+    auto closure = [lb, fn = std::forward<F>(fun)](detail::cv_qualified<t> v) {
+        lb->setText(fn(v));
+    };
 
     closure(v());
-    value_::connect(&v, value_::value_changed<t>(),
-                    lb, closure,
-                    v.SAFE_CONNTYPE);
+    v.connect_to(lb, std::move(closure));
 }
 
 template<typename t, typename F>
@@ -78,10 +71,7 @@ void tie_setting(value<t>& v, QObject* obj, F&& fun)
         abort();
 
     fun(v());
-
-    value_::connect(&v, value_::value_changed<t>(),
-                    obj, fun,
-                    v.DIRECT_CONNTYPE);
+    v.connect_to(obj, std::forward<F>(fun));
 }
 
 OTR_OPTIONS_EXPORT void tie_setting(value<int>& v, QComboBox* cb);