Utils: Add ToolBar to layoutbuilder

Change-Id: I26ce85f73e625508d816c0e361a6afc65adf65ff
Reviewed-by: hjk <hjk@qt.io>

src/libs/utils/layoutbuilder.cpp

@@ -3,20 +3,21 @@
 
 #include "layoutbuilder.h"
 
+#include <QApplication>
 #include <QDebug>
 #include <QFormLayout>
 #include <QGridLayout>
 #include <QGroupBox>
 #include <QLabel>
 #include <QPushButton>
-#include <QStackedLayout>
 #include <QSpacerItem>
 #include <QSpinBox>
 #include <QSplitter>
+#include <QStackedLayout>
 #include <QStyle>
 #include <QTabWidget>
 #include <QTextEdit>
-#include <QApplication>
+#include <QToolBar>
 
 namespace Layouting {
 
@@ -774,6 +775,26 @@ Splitter::Splitter(std::initializer_list<LayoutItem> items)
     };
 }
 
+ToolBar::ToolBar(std::initializer_list<LayoutItem> items)
+{
+    subItems = items;
+    onAdd = [](LayoutBuilder &builder) {
+        auto toolbar = new QToolBar;
+        toolbar->setOrientation(Qt::Horizontal);
+        builder.stack.append(toolbar);
+    };
+    onExit = [](LayoutBuilder &builder) {
+        const Slice slice = builder.stack.last();
+        QToolBar *toolBar = qobject_cast<QToolBar *>(slice.widget);
+        for (const ResultItem &ri : slice.pendingItems) {
+            if (ri.widget)
+                toolBar->addWidget(ri.widget);
+        }
+        builder.stack.pop_back();
+        builder.stack.last().pendingItems.append(ResultItem(toolBar));
+    };
+}
+
 TabWidget::TabWidget(std::initializer_list<LayoutItem> items)
 {
     this->subItems = items;

src/libs/utils/layoutbuilder.h

@@ -171,6 +171,12 @@ public:
     Splitter(std::initializer_list<LayoutItem> items);
 };
 
+class QTCREATOR_UTILS_EXPORT ToolBar : public LayoutItem
+{
+public:
+    ToolBar(std::initializer_list<LayoutItem> items);
+};
+
 class QTCREATOR_UTILS_EXPORT TabWidget : public LayoutItem
 {
 public: