Utils: Make Layouting::Title even less special

This goes a bit in the direction of property settigs for
arbitrary layout items.

Change-Id: I98500e213e3b22cc99038a1bcf688183588be248
Reviewed-by: Eike Ziller <eike.ziller@qt.io>
Reviewed-by: Qt CI Bot <qt_ci_bot@qt-project.org>

src/libs/utils/layoutbuilder.cpp

@@ -460,13 +460,6 @@ LayoutBuilder::Space::Space(int space)
     specialValue = space;
 }
 
-LayoutBuilder::Title::Title(const QString &title, BoolAspect *check)
-{
-    specialType = SpecialType::Title;
-    specialValue = title;
-    aspect = check;
-}
-
 LayoutBuilder::Span::Span(int span_, const LayoutItem &item)
 {
     LayoutBuilder::LayoutItem::operator=(item);
@@ -482,23 +475,38 @@ LayoutBuilder::AlignAsFormLabel::AlignAsFormLabel(const LayoutItem &item)
 namespace Layouting {
 
 Group::Group(const LayoutBuilder &innerLayout)
-    : Group(Title({}), innerLayout)
+    : Group({}, innerLayout)
 {}
 
-Group::Group(const LayoutBuilder::Title &title, const LayoutBuilder &innerLayout)
+Group::Group(const LayoutBuilder::Setters &setters, const LayoutBuilder &innerLayout)
 {
     auto box = new QGroupBox;
-
-    box->setTitle(title.specialValue.toString());
-    box->setObjectName(title.specialValue.toString());
-    if (auto check = qobject_cast<BoolAspect *>(title.aspect)) {
-        box->setCheckable(true);
-        box->setChecked(check->value());
-        check->setHandlesGroup(box);
+    innerLayout.attachTo(box, true);
+    for (const LayoutBuilder::Setter &func : setters)
+        func(box);
+    widget = box;
 }
 
-    innerLayout.attachTo(box, true);
-    widget = box;
+LayoutBuilder::Setter Title(const QString &title, BoolAspect *checker)
+{
+    return Layouting::title(title, checker);
+}
+
+LayoutBuilder::Setter title(const QString &title, BoolAspect *checker)
+{
+    return [title, checker](QObject *target) {
+        if (auto groupBox = qobject_cast<QGroupBox *>(target)) {
+            groupBox->setTitle(title);
+            groupBox->setObjectName(title);
+            if (checker) {
+                groupBox->setCheckable(true);
+                groupBox->setChecked(checker->value());
+                checker->setHandlesGroup(groupBox);
+            }
+        } else {
+            QTC_CHECK(false);
+        }
+    };
 }
 
 } // Layouting

src/libs/utils/layoutbuilder.h

@@ -63,7 +63,6 @@ public:
         Space,
         Stretch,
         Break,
-        Title,
     };
 
     class QTCREATOR_UTILS_EXPORT LayoutItem
@@ -143,10 +142,13 @@ public:
         Break();
     };
 
-    class QTCREATOR_UTILS_EXPORT Title : public LayoutItem
+    using Setter = std::function<void(QObject *target)>;
+
+    class QTCREATOR_UTILS_EXPORT Setters : public std::vector<Setter>
     {
     public:
-        explicit Title(const QString &title, BoolAspect *check = nullptr);
+        using std::vector<Setter>::vector;
+        Setters(const Setter &setter) { push_back(setter); }
     };
 
 protected:
@@ -172,11 +174,17 @@ private:
 
 namespace Layouting {
 
+QTCREATOR_UTILS_EXPORT LayoutBuilder::Setter title(const QString &title,
+                                                   BoolAspect *checker = nullptr);
+
+QTCREATOR_UTILS_EXPORT LayoutBuilder::Setter Title(const QString &title,
+                                                   BoolAspect *checker = nullptr); // FIXME: Remove
+
 class QTCREATOR_UTILS_EXPORT Group : public LayoutBuilder::LayoutItem
 {
 public:
     explicit Group(const LayoutBuilder &innerLayout);
-    Group(const LayoutBuilder::Title &title, const LayoutBuilder &innerLayout);
+    Group(const LayoutBuilder::Setters &setters, const LayoutBuilder &innerLayout);
 };
 
 class QTCREATOR_UTILS_EXPORT Column : public LayoutBuilder
@@ -212,7 +220,6 @@ using Space = LayoutBuilder::Space;
 using Span = LayoutBuilder::Span;
 using AlignAsFormLabel = LayoutBuilder::AlignAsFormLabel;
 using Break = LayoutBuilder::Break;
-using Title = LayoutBuilder::Title;
 
 }
 } // namespace Utils

src/plugins/debugger/gdb/gdboptionspage.cpp

@@ -59,7 +59,7 @@ public:
             DebuggerSettings &s = *debuggerSettings();
 
             Group general {
-                Title { Tr::tr("General") },
+                title(Tr::tr("General")),
                 Column {
                     Row { s.gdbWatchdogTimeout, Stretch() },
                     s.skipKnownFrames,
@@ -77,11 +77,11 @@ public:
 
             Column commands {
                 Group {
-                    Title { Tr::tr("Additional Startup Commands") },
+                    title(Tr::tr("Additional Startup Commands")),
                     Column { s.gdbStartupCommands }
                 },
                 Group {
-                    Title { Tr::tr("Additional Attach Commands") },
+                    title(Tr::tr("Additional Attach Commands")),
                     Column { s.gdbPostAttachCommands },
                 },
                 Stretch()