LayoutBuilder: Add support for tab widget

Change-Id: Ia35fa234c8ac1befd7e8fd2be57998e94294a5a1
Reviewed-by: hjk <hjk@qt.io>

src/libs/utils/layoutbuilder.cpp

@@ -12,6 +12,7 @@
 #include <QPushButton>
 #include <QStackedLayout>
 #include <QStyle>
+#include <QTabWidget>
 #include <QWidget>
 
 namespace Utils {
@@ -452,6 +453,13 @@ LayoutBuilder::Span::Span(int span_, const LayoutItem &item)
     span = span_;
 }
 
+LayoutBuilder::Tab::Tab(const QString &tabName, const LayoutBuilder &item)
+{
+    text = tabName;
+    widget = new QWidget;
+    item.attachTo(widget);
+}
+
 LayoutBuilder::HorizontalRule::HorizontalRule()
 {
     specialType = SpecialType::HorizontalRule;
@@ -476,18 +484,28 @@ static void applyItems(QWidget *widget, const QList<LayoutBuilder::LayoutItem> &
     }
 }
 
-Group::Group(std::initializer_list<LayoutBuilder::LayoutItem> items)
+Group::Group(std::initializer_list<LayoutItem> items)
 {
     widget = new QGroupBox;
     applyItems(widget, items);
 }
 
-PushButton::PushButton(std::initializer_list<LayoutBuilder::LayoutItem> items)
+PushButton::PushButton(std::initializer_list<LayoutItem> items)
 {
     widget = new QPushButton;
     applyItems(widget, items);
 }
 
+TabWidget::TabWidget(std::initializer_list<Tab> tabs)
+    : TabWidget(new QTabWidget, tabs) {}
+
+TabWidget::TabWidget(QTabWidget *tabWidget, std::initializer_list<Tab> tabs)
+{
+    widget = tabWidget;
+    for (const Tab &tab : tabs)
+        tabWidget->addTab(tab.widget, tab.text);
+}
+
 // "Properties"
 
 LayoutBuilder::Setter title(const QString &title, BoolAspect *checker)

src/libs/utils/layoutbuilder.h

@@ -14,6 +14,7 @@
 
 QT_BEGIN_NAMESPACE
 class QLayout;
+class QTabWidget;
 class QWidget;
 QT_END_NAMESPACE
 
@@ -125,6 +126,12 @@ public:
         explicit Stretch(int stretch = 1);
     };
 
+    class QTCREATOR_UTILS_EXPORT Tab : public LayoutItem
+    {
+    public:
+        Tab(const QString &tabName, const LayoutBuilder &item);
+    };
+
     class QTCREATOR_UTILS_EXPORT Break : public LayoutItem
     {
     public:
@@ -161,6 +168,10 @@ private:
 
 namespace Layouting {
 
+using Space = LayoutBuilder::Space;
+using Span = LayoutBuilder::Span;
+using Tab = LayoutBuilder::Tab;
+
 QTCREATOR_UTILS_EXPORT LayoutBuilder::Setter title(const QString &title,
                                                    BoolAspect *checker = nullptr);
 
@@ -182,6 +193,13 @@ public:
     PushButton(std::initializer_list<LayoutItem> items);
 };
 
+class QTCREATOR_UTILS_EXPORT TabWidget : public LayoutBuilder::LayoutItem
+{
+public:
+    TabWidget(std::initializer_list<Tab> tabs);
+    TabWidget(QTabWidget *tabWidget, std::initializer_list<Tab> tabs);
+};
+
 class QTCREATOR_UTILS_EXPORT Column : public LayoutBuilder
 {
 public:
@@ -224,9 +242,6 @@ public:
     Splitter(std::initializer_list<LayoutItem> items) : LayoutBuilder(StackLayout, items) {}
 };
 
-using Space = LayoutBuilder::Space;
-using Span = LayoutBuilder::Span;
-
 QTCREATOR_UTILS_EXPORT extern LayoutBuilder::Break br;
 QTCREATOR_UTILS_EXPORT extern LayoutBuilder::Stretch st;
 QTCREATOR_UTILS_EXPORT extern LayoutBuilder::Space empty;