ProjectExplorer: Base KitAspectWidget on BaseAspect

Enables re-using existing functionality.

The "Make mutable" functionality is still oddly placed. I doubt people
find and use it actively.

Change-Id: Ic6aae17e3a7df093f0f5f234f1e6e1afc196a087
Reviewed-by: Christian Kandeler <christian.kandeler@qt.io>

src/plugins/cmakeprojectmanager/cmakekitinformation.cpp

@@ -47,6 +47,7 @@
 #include <utils/algorithm.h>
 #include <utils/elidinglabel.h>
 #include <utils/environment.h>
+#include <utils/layoutbuilder.h>
 #include <utils/macroexpander.h>
 #include <utils/qtcassert.h>
 #include <utils/variablechooser.h>
@@ -87,8 +88,8 @@ class CMakeKitAspectWidget final : public KitAspectWidget
     Q_DECLARE_TR_FUNCTIONS(CMakeProjectManager::Internal::CMakeKitAspect)
 public:
     CMakeKitAspectWidget(Kit *kit, const KitAspect *ki) : KitAspectWidget(kit, ki),
-        m_comboBox(new QComboBox),
-        m_manageButton(new QPushButton(KitAspectWidget::msgManage()))
+        m_comboBox(createSubWidget<QComboBox>()),
+        m_manageButton(createSubWidget<QPushButton>(KitAspectWidget::msgManage()))
     {
         m_comboBox->setSizePolicy(QSizePolicy::Ignored, m_comboBox->sizePolicy().verticalPolicy());
         m_comboBox->setEnabled(false);
@@ -124,8 +125,13 @@ public:
 private:
     // KitAspectWidget interface
     void makeReadOnly() override { m_comboBox->setEnabled(false); }
-    QWidget *mainWidget() const override { return m_comboBox; }
-    QWidget *buttonWidget() const override { return m_manageButton; }
+
+    void addToLayout(Utils::LayoutBuilder &builder) override
+    {
+        addMutableAction(m_comboBox);
+        builder.addItem(m_comboBox);
+        builder.addItem(m_manageButton);
+    }
 
     void refresh() override
     {
@@ -205,7 +211,7 @@ private:
 
     void manageCMakeTools()
     {
-        Core::ICore::showOptionsDialog(Constants::CMAKE_SETTINGS_PAGE_ID, buttonWidget());
+        Core::ICore::showOptionsDialog(Constants::CMAKE_SETTINGS_PAGE_ID, m_manageButton);
     }
 
     bool m_removingItem = false;
@@ -334,8 +340,8 @@ class CMakeGeneratorKitAspectWidget final : public KitAspectWidget
 public:
     CMakeGeneratorKitAspectWidget(Kit *kit, const ::KitAspect *ki)
         : KitAspectWidget(kit, ki),
-          m_label(new Utils::ElidingLabel),
-          m_changeButton(new QPushButton)
+          m_label(createSubWidget<Utils::ElidingLabel>()),
+          m_changeButton(createSubWidget<QPushButton>())
     {
         m_label->setToolTip(ki->description());
         m_changeButton->setText(tr("Change..."));
@@ -353,8 +359,13 @@ public:
 private:
     // KitAspectWidget interface
     void makeReadOnly() override { m_changeButton->setEnabled(false); }
-    QWidget *mainWidget() const override { return m_label; }
-    QWidget *buttonWidget() const override { return m_changeButton; }
+
+    void addToLayout(Utils::LayoutBuilder &builder) override
+    {
+        addMutableAction(m_label);
+        builder.addItem(m_label);
+        builder.addItem(m_changeButton);
+    }
 
     void refresh() override
     {
@@ -851,8 +862,8 @@ class CMakeConfigurationKitAspectWidget final : public KitAspectWidget
 public:
     CMakeConfigurationKitAspectWidget(Kit *kit, const KitAspect *ki)
         : KitAspectWidget(kit, ki),
-          m_summaryLabel(new Utils::ElidingLabel),
-          m_manageButton(new QPushButton)
+          m_summaryLabel(createSubWidget<Utils::ElidingLabel>()),
+          m_manageButton(createSubWidget<QPushButton>())
     {
         refresh();
         m_manageButton->setText(tr("Change..."));
@@ -862,8 +873,12 @@ public:
 
 private:
     // KitAspectWidget interface
-    QWidget *mainWidget() const override { return m_summaryLabel; }
-    QWidget *buttonWidget() const override { return m_manageButton; }
+    void addToLayout(Utils::LayoutBuilder &builder) override
+    {
+        addMutableAction(m_summaryLabel);
+        builder.addItem(m_summaryLabel);
+        builder.addItem(m_manageButton);
+    }
 
     void makeReadOnly() override
     {

src/plugins/debugger/debuggerkitinformation.cpp

@@ -36,6 +36,7 @@
 
 #include <utils/environment.h>
 #include <utils/fileutils.h>
+#include <utils/layoutbuilder.h>
 #include <utils/macroexpander.h>
 #include <utils/qtcassert.h>
 
@@ -63,7 +64,7 @@ public:
     DebuggerKitAspectWidget(Kit *workingCopy, const KitAspect *ki)
         : KitAspectWidget(workingCopy, ki)
     {
-        m_comboBox = new QComboBox;
+        m_comboBox = createSubWidget<QComboBox>();
         m_comboBox->setSizePolicy(QSizePolicy::Ignored, m_comboBox->sizePolicy().verticalPolicy());
         m_comboBox->setEnabled(true);
 
@@ -72,7 +73,7 @@ public:
         connect(m_comboBox, QOverload<int>::of(&QComboBox::currentIndexChanged),
                 this, &DebuggerKitAspectWidget::currentDebuggerChanged);
 
-        m_manageButton = new QPushButton(KitAspectWidget::msgManage());
+        m_manageButton = createSubWidget<QPushButton>(KitAspectWidget::msgManage());
         m_manageButton->setContentsMargins(0, 0, 0, 0);
         connect(m_manageButton, &QAbstractButton::clicked,
                 this, &DebuggerKitAspectWidget::manageDebuggers);
@@ -85,8 +86,12 @@ public:
     }
 
 private:
-    QWidget *buttonWidget() const override { return m_manageButton; }
-    QWidget *mainWidget() const override { return m_comboBox; }
+    void addToLayout(Utils::LayoutBuilder &builder) override
+    {
+        addMutableAction(m_comboBox);
+        builder.addItem(m_comboBox);
+        builder.addItem(m_manageButton);
+    }
 
     void makeReadOnly() override
     {
@@ -110,7 +115,7 @@ private:
     void manageDebuggers()
     {
         Core::ICore::showOptionsDialog(ProjectExplorer::Constants::DEBUGGER_SETTINGS_PAGE_ID,
-                                       buttonWidget());
+                                       m_manageButton);
     }
 
     void currentDebuggerChanged(int idx)

src/plugins/mcusupport/mcusupportoptions.cpp

@@ -1254,20 +1254,11 @@ class McuDependenciesKitAspectWidget final : public KitAspectWidget
 public:
     McuDependenciesKitAspectWidget(Kit *workingCopy, const KitAspect *ki)
         : KitAspectWidget(workingCopy, ki)
-    {
-        m_emptyWidget = new QWidget();
-    }
+    {}
 
-    ~McuDependenciesKitAspectWidget() override {
-        delete m_emptyWidget;
-    }
     void makeReadOnly() override {}
     void refresh() override {}
-    QWidget *mainWidget() const override {
-        return m_emptyWidget;
-    }
-private:
-    QWidget *m_emptyWidget;
+    void addToLayout(Utils::LayoutBuilder &) override {}
 };
 
 } // Internal

src/plugins/mesonprojectmanager/settings/tools/kitaspect/toolkitaspectwidget.cpp

@@ -39,8 +39,8 @@ ToolKitAspectWidget::ToolKitAspectWidget(ProjectExplorer::Kit *kit,
                                          const ProjectExplorer::KitAspect *ki,
                                          ToolType type)
     : ProjectExplorer::KitAspectWidget(kit, ki)
-    , m_toolsComboBox{new QComboBox}
-    , m_manageButton(new QPushButton(KitAspectWidget::msgManage()))
+    , m_toolsComboBox(createSubWidget<QComboBox>())
+    , m_manageButton(createSubWidget<QPushButton>(KitAspectWidget::msgManage()))
     , m_type{type}
 {
     m_toolsComboBox->setSizePolicy(QSizePolicy::Ignored,
@@ -51,7 +51,7 @@ ToolKitAspectWidget::ToolKitAspectWidget(ProjectExplorer::Kit *kit,
 
     m_manageButton->setContentsMargins(0, 0, 0, 0);
     connect(m_manageButton, &QPushButton::clicked, this, [this]() {
-        Core::ICore::showOptionsDialog(Constants::SettingsPage::TOOLS_ID, buttonWidget());
+        Core::ICore::showOptionsDialog(Constants::SettingsPage::TOOLS_ID, m_manageButton);
     });
 
     connect(MesonTools::instance(),

src/plugins/mesonprojectmanager/settings/tools/kitaspect/toolkitaspectwidget.h

@@ -30,6 +30,8 @@
 
 #include <projectexplorer/kitmanager.h>
 
+#include <utils/layoutbuilder.h>
+
 #include <QComboBox>
 #include <QCoreApplication>
 #include <QPushButton>
@@ -58,8 +60,14 @@ private:
     void setToDefault();
 
     void makeReadOnly() override { m_toolsComboBox->setEnabled(false); }
-    QWidget *mainWidget() const override { return m_toolsComboBox; }
-    QWidget *buttonWidget() const override { return m_manageButton; }
+
+    void addToLayout(Utils::LayoutBuilder &builder) override
+    {
+        addMutableAction(m_toolsComboBox);
+        builder.addItem(m_toolsComboBox);
+        builder.addItem(m_manageButton);
+    }
+
     void refresh() override
     {
         const auto id = [this]() {

src/plugins/projectexplorer/kitinformation.cpp

@@ -41,6 +41,7 @@
 #include <utils/elidinglabel.h>
 #include <utils/environment.h>
 #include <utils/environmentdialog.h>
+#include <utils/layoutbuilder.h>
 #include <utils/macroexpander.h>
 #include <utils/pathchooser.h>
 #include <utils/qtcassert.h>
@@ -56,6 +57,8 @@
 #include <QPushButton>
 #include <QVBoxLayout>
 
+using namespace Utils;
+
 namespace ProjectExplorer {
 
 const char KITINFORMATION_ID_V3[] = "PE.Profile.ToolChainsV3";
@@ -72,7 +75,7 @@ class SysRootKitAspectWidget : public KitAspectWidget
 public:
     SysRootKitAspectWidget(Kit *k, const KitAspect *ki) : KitAspectWidget(k, ki)
     {
-        m_chooser = new Utils::PathChooser;
+        m_chooser = createSubWidget<PathChooser>();
         m_chooser->setExpectedKind(Utils::PathChooser::ExistingDirectory);
         m_chooser->setHistoryCompleter(QLatin1String("PE.SysRoot.History"));
         m_chooser->setFilePath(SysRootKitAspect::sysRoot(k));
@@ -84,8 +87,12 @@ public:
 
 private:
     void makeReadOnly() override { m_chooser->setReadOnly(true); }
-    QWidget *buttonWidget() const override { return m_chooser->buttonAtIndex(0); }
-    QWidget *mainWidget() const override { return m_chooser->lineEdit(); }
+
+    void addToLayout(LayoutBuilder &builder) override
+    {
+        addMutableAction(m_chooser);
+        builder.addItem(Layouting::Span(2, m_chooser));
+    }
 
     void refresh() override
     {
@@ -212,7 +219,7 @@ class ToolChainKitAspectWidget final : public KitAspectWidget
 public:
     ToolChainKitAspectWidget(Kit *k, const KitAspect *ki) : KitAspectWidget(k, ki)
     {
-        m_mainWidget = new QWidget;
+        m_mainWidget = createSubWidget<QWidget>();
         m_mainWidget->setContentsMargins(0, 0, 0, 0);
 
         auto layout = new QGridLayout(m_mainWidget);
@@ -242,7 +249,7 @@ public:
 
         refresh();
 
-        m_manageButton = new QPushButton(KitAspectWidget::msgManage());
+        m_manageButton = createSubWidget<QPushButton>(KitAspectWidget::msgManage());
         m_manageButton->setContentsMargins(0, 0, 0, 0);
         connect(m_manageButton, &QAbstractButton::clicked,
                 this, &ToolChainKitAspectWidget::manageToolChains);
@@ -255,8 +262,12 @@ public:
     }
 
 private:
-    QWidget *mainWidget() const override { return m_mainWidget; }
-    QWidget *buttonWidget() const override { return m_manageButton; }
+    void addToLayout(LayoutBuilder &builder) override
+    {
+        addMutableAction(m_mainWidget);
+        builder.addItem(m_mainWidget);
+        builder.addItem(m_manageButton);
+    }
 
     void refresh() override
     {
@@ -289,7 +300,7 @@ private:
 
     void manageToolChains()
     {
-        Core::ICore::showOptionsDialog(Constants::TOOLCHAIN_SETTINGS_PAGE_ID, buttonWidget());
+        Core::ICore::showOptionsDialog(Constants::TOOLCHAIN_SETTINGS_PAGE_ID, m_manageButton);
     }
 
     void currentToolChainChanged(Utils::Id language, int idx)
@@ -699,7 +710,7 @@ class DeviceTypeKitAspectWidget final : public KitAspectWidget
 
 public:
     DeviceTypeKitAspectWidget(Kit *workingCopy, const KitAspect *ki)
-        : KitAspectWidget(workingCopy, ki), m_comboBox(new QComboBox)
+        : KitAspectWidget(workingCopy, ki), m_comboBox(createSubWidget<QComboBox>())
     {
         for (IDeviceFactory *factory : IDeviceFactory::allDeviceFactories())
             m_comboBox->addItem(factory->displayName(), factory->deviceType().toSetting());
@@ -712,7 +723,12 @@ public:
     ~DeviceTypeKitAspectWidget() override { delete m_comboBox; }
 
 private:
-    QWidget *mainWidget() const override { return m_comboBox; }
+    void addToLayout(LayoutBuilder &builder) override
+    {
+        addMutableAction(m_comboBox);
+        builder.addItem(m_comboBox);
+    }
+
     void makeReadOnly() override { m_comboBox->setEnabled(false); }
 
     void refresh() override
@@ -817,12 +833,13 @@ class DeviceKitAspectWidget final : public KitAspectWidget
 
 public:
     DeviceKitAspectWidget(Kit *workingCopy, const KitAspect *ki)
-        : KitAspectWidget(workingCopy, ki), m_comboBox(new QComboBox),
+        : KitAspectWidget(workingCopy, ki),
+        m_comboBox(createSubWidget<QComboBox>()),
         m_model(new DeviceManagerModel(DeviceManager::instance()))
     {
         m_comboBox->setSizePolicy(QSizePolicy::Ignored, m_comboBox->sizePolicy().verticalPolicy());
         m_comboBox->setModel(m_model);
-        m_manageButton = new QPushButton(KitAspectWidget::msgManage());
+        m_manageButton = createSubWidget<QPushButton>(KitAspectWidget::msgManage());
         refresh();
         m_comboBox->setToolTip(ki->description());
 
@@ -844,8 +861,13 @@ public:
     }
 
 private:
-    QWidget *mainWidget() const override { return m_comboBox; }
-    QWidget *buttonWidget() const override { return m_manageButton; }
+    void addToLayout(LayoutBuilder &builder) override
+    {
+        addMutableAction(m_comboBox);
+        builder.addItem(m_comboBox);
+        builder.addItem(m_manageButton);
+    }
+
     void makeReadOnly() override { m_comboBox->setEnabled(false); }
 
     void refresh() override
@@ -856,7 +878,7 @@ private:
 
     void manageDevices()
     {
-        Core::ICore::showOptionsDialog(Constants::DEVICE_SETTINGS_PAGE_ID, buttonWidget());
+        Core::ICore::showOptionsDialog(Constants::DEVICE_SETTINGS_PAGE_ID, m_manageButton);
     }
 
     void modelAboutToReset()
@@ -1069,9 +1091,9 @@ class EnvironmentKitAspectWidget final : public KitAspectWidget
 public:
     EnvironmentKitAspectWidget(Kit *workingCopy, const KitAspect *ki)
         : KitAspectWidget(workingCopy, ki),
-          m_summaryLabel(new Utils::ElidingLabel),
-          m_manageButton(new QPushButton),
-          m_mainWidget(new QWidget)
+          m_summaryLabel(createSubWidget<Utils::ElidingLabel>()),
+          m_manageButton(createSubWidget<QPushButton>()),
+          m_mainWidget(createSubWidget<QWidget>())
     {
         auto *layout = new QVBoxLayout;
         layout->setContentsMargins(0, 0, 0, 0);
@@ -1086,8 +1108,13 @@ public:
     }
 
 private:
-    QWidget *mainWidget() const override { return m_mainWidget; }
-    QWidget *buttonWidget() const override { return m_manageButton; }
+    void addToLayout(LayoutBuilder &builder) override
+    {
+        addMutableAction(m_mainWidget);
+        builder.addItem(m_mainWidget);
+        builder.addItem(m_manageButton);
+    }
+
     void makeReadOnly() override { m_manageButton->setEnabled(false); }
 
     void refresh() override

src/plugins/projectexplorer/kitmanager.cpp

@@ -50,6 +50,7 @@
 #include <utils/qtcassert.h>
 #include <utils/stringutils.h>
 
+#include <QAction>
 #include <QHash>
 #include <QLabel>
 #include <QSettings>
@@ -724,24 +725,39 @@ void KitAspect::notifyAboutUpdate(Kit *k)
 
 KitAspectWidget::KitAspectWidget(Kit *kit, const KitAspect *ki)
     : m_kit(kit), m_kitInformation(ki)
-{ }
-
-void KitAspectWidget::addToLayout(LayoutBuilder &builder)
 {
-    QTC_ASSERT(!m_label, delete m_label);
-    m_label = new QLabel(m_kitInformation->displayName() + ':');
-    m_label->setToolTip(m_kitInformation->description());
-
-    builder.addRow({LayoutBuilder::AlignAsFormLabel(m_label), mainWidget(), buttonWidget()});
+    const Id id = ki->id();
+    m_mutableAction = new QAction(tr("Mark as Mutable"));
+    m_mutableAction->setCheckable(true);
+    m_mutableAction->setChecked(m_kit->isMutable(id));
+    m_mutableAction->setEnabled(!m_kit->isSticky(id));
+    connect(m_mutableAction, &QAction::toggled, this, [this, id] {
+        m_kit->setMutable(id, m_mutableAction->isChecked());
+    });
 }
 
-void KitAspectWidget::setVisible(bool visible)
+KitAspectWidget::~KitAspectWidget()
 {
-    mainWidget()->setVisible(visible);
-    if (buttonWidget())
-        buttonWidget()->setVisible(visible);
-    QTC_ASSERT(m_label, return);
-    m_label->setVisible(visible);
+    delete m_mutableAction;
+}
+
+void KitAspectWidget::addToLayoutWithLabel(QWidget *parent)
+{
+    QTC_ASSERT(parent, return);
+    auto label = createSubWidget<QLabel>(m_kitInformation->displayName() + ':');
+    label->setToolTip(m_kitInformation->description());
+
+    LayoutExtender builder(parent->layout());
+    builder.finishRow();
+    builder.addItem(label);
+    addToLayout(builder);
+}
+
+void KitAspectWidget::addMutableAction(QWidget *child)
+{
+    QTC_ASSERT(child, return);
+    child->addAction(m_mutableAction);
+    child->setContextMenuPolicy(Qt::ActionsContextMenu);
 }
 
 QString KitAspectWidget::msgManage()

src/plugins/projectexplorer/kitmanager.h

@@ -31,6 +31,8 @@
 
 #include <coreplugin/featureprovider.h>
 
+#include <utils/aspects.h>
+
 #include <QObject>
 #include <QPair>
 #include <QSet>
@@ -125,31 +127,30 @@ private:
     bool m_essential = false;
 };
 
-class PROJECTEXPLORER_EXPORT KitAspectWidget : public QObject
+class PROJECTEXPLORER_EXPORT KitAspectWidget : public Utils::BaseAspect
 {
     Q_OBJECT
 
 public:
     KitAspectWidget(Kit *kit, const KitAspect *ki);
+    ~KitAspectWidget();
 
     virtual void makeReadOnly() = 0;
     virtual void refresh() = 0;
 
-    virtual QWidget *mainWidget() const = 0;
-    virtual QWidget *buttonWidget() const { return nullptr; }
-
-    void addToLayout(Utils::LayoutBuilder &builder);
-    void setVisible(bool visible);
+    void addToLayoutWithLabel(QWidget *parent);
 
     static QString msgManage();
 
     Kit *kit() const { return m_kit; }
     const KitAspect *kitInformation() const { return m_kitInformation; }
+    QAction *mutableAction() const { return m_mutableAction; }
+    void addMutableAction(QWidget *child);
 
 protected:
     Kit *m_kit;
     const KitAspect *m_kitInformation;
-    QLabel *m_label = nullptr;
+    QAction *m_mutableAction = nullptr;
 };
 
 class PROJECTEXPLORER_EXPORT KitManager : public QObject

src/plugins/projectexplorer/kitmanagerconfigwidget.cpp

@@ -133,8 +133,6 @@ KitManagerConfigWidget::~KitManagerConfigWidget()
 {
     qDeleteAll(m_widgets);
     m_widgets.clear();
-    qDeleteAll(m_actions);
-    m_actions.clear();
 
     // Make sure our workingCopy did not get registered somehow:
     QTC_CHECK(!Utils::contains(KitManager::kits(),
@@ -219,23 +217,11 @@ void KitManagerConfigWidget::addAspectToWorkingCopy(KitAspect *aspect)
     QTC_ASSERT(widget, return);
     QTC_ASSERT(!m_widgets.contains(widget), return);
 
-    auto action = new QAction(tr("Mark as Mutable"), nullptr);
-    action->setCheckable(true);
-    action->setChecked(workingCopy()->isMutable(aspect->id()));
-
-    action->setEnabled(!workingCopy()->isSticky(aspect->id()));
-    widget->mainWidget()->addAction(action);
-    widget->mainWidget()->setContextMenuPolicy(Qt::ActionsContextMenu);
-    connect(action, &QAction::toggled, this, [this, aspect, action] {
-        workingCopy()->setMutable(aspect->id(), action->isChecked());
-        emit dirty();
-    });
-
-    m_actions << action;
-
-    LayoutExtender builder(layout());
-    widget->addToLayout(builder);
+    widget->addToLayoutWithLabel(this);
     m_widgets.append(widget);
+
+    connect(widget->mutableAction(), &QAction::toggled,
+            this, &KitManagerConfigWidget::dirty);
 }
 
 void KitManagerConfigWidget::updateVisibility()

src/plugins/projectexplorer/kitmanagerconfigwidget.h

@@ -100,7 +100,6 @@ private:
     bool m_fixingKit = false;
     bool m_hasUniqueName = true;
     bool m_isRegistering = false;
-    QList<QAction *> m_actions;
     mutable QString m_cachedDisplayName;
 };
 

src/plugins/projectexplorer/miniprojecttargetselector.cpp

@@ -39,6 +39,7 @@
 
 #include <utils/algorithm.h>
 #include <utils/itemviews.h>
+#include <utils/layoutbuilder.h>
 #include <utils/stringutils.h>
 #include <utils/styledbar.h>
 #include <utils/stylehelper.h>
@@ -564,15 +565,14 @@ class KitAreaWidget : public QWidget
     Q_OBJECT
 public:
     explicit KitAreaWidget(QWidget *parent = nullptr)
-        : QWidget(parent), m_layout(new QGridLayout(this))
+        : QWidget(parent)
     {
-        m_layout->setContentsMargins(3, 3, 3, 3);
         connect(KitManager::instance(), &KitManager::kitUpdated, this, &KitAreaWidget::updateKit);
     }
 
     ~KitAreaWidget() override { setKit(nullptr); }
 
-    void setKit(ProjectExplorer::Kit *k)
+    void setKit(Kit *k)
     {
         qDeleteAll(m_widgets);
         m_widgets.clear();
@@ -580,25 +580,22 @@ public:
         if (!k)
             return;
 
-        foreach (QLabel *l, m_labels)
-            l->deleteLater();
-        m_labels.clear();
+        delete layout();
 
-        int row = 0;
+        LayoutBuilder builder(LayoutBuilder::GridLayout);
         for (KitAspect *aspect : KitManager::kitAspects()) {
             if (k && k->isMutable(aspect->id())) {
                 KitAspectWidget *widget = aspect->createConfigWidget(k);
                 m_widgets << widget;
                 QLabel *label = new QLabel(aspect->displayName());
-                m_labels << label;
-
-                m_layout->addWidget(label, row, 0);
-                m_layout->addWidget(widget->mainWidget(), row, 1);
-                m_layout->addWidget(widget->buttonWidget(), row, 2);
-
-                ++row;
+                builder.addItem(label);
+                widget->addToLayout(builder);
+                builder.finishRow();
             }
         }
+        builder.attachTo(this);
+        layout()->setContentsMargins(3, 3, 3, 3);
+
         m_kit = k;
 
         setHidden(m_widgets.isEmpty());
@@ -633,10 +630,8 @@ private:
         }
     }
 
-    QGridLayout *m_layout;
     Kit *m_kit = nullptr;
     QList<KitAspectWidget *> m_widgets;
-    QList<QLabel *> m_labels;
 };
 
 /////////

src/plugins/qbsprojectmanager/qbskitinformation.cpp

@@ -31,6 +31,7 @@
 #include <projectexplorer/kitmanager.h>
 
 #include <utils/elidinglabel.h>
+#include <utils/layoutbuilder.h>
 #include <utils/qtcassert.h>
 
 #include <QPushButton>
@@ -46,8 +47,8 @@ class AspectWidget final : public KitAspectWidget
 public:
     AspectWidget(Kit *kit, const KitAspect *kitInfo)
         : KitAspectWidget(kit, kitInfo),
-          m_contentLabel(new Utils::ElidingLabel),
-          m_changeButton(new QPushButton(tr("Change...")))
+          m_contentLabel(createSubWidget<Utils::ElidingLabel>()),
+          m_changeButton(createSubWidget<QPushButton>(tr("Change...")))
     {
         connect(m_changeButton, &QPushButton::clicked, this, &AspectWidget::changeProperties);
     }
@@ -55,8 +56,13 @@ public:
 private:
     void makeReadOnly() override { m_changeButton->setEnabled(false); }
     void refresh() override { m_contentLabel->setText(QbsKitAspect::representation(kit())); }
-    QWidget *mainWidget() const override { return m_contentLabel; }
-    QWidget *buttonWidget() const override { return m_changeButton; }
+
+    void addToLayout(Utils::LayoutBuilder &builder) override
+    {
+        addMutableAction(m_contentLabel);
+        builder.addItem(m_contentLabel);
+        builder.addItem(m_changeButton);
+    }
 
     void changeProperties()
     {

src/plugins/qmakeprojectmanager/qmakekitinformation.cpp

@@ -34,6 +34,7 @@
 #include <qtsupport/qtkitinformation.h>
 
 #include <utils/algorithm.h>
+#include <utils/layoutbuilder.h>
 #include <utils/qtcassert.h>
 
 #include <QDir>
@@ -51,7 +52,7 @@ class QmakeKitAspectWidget final : public KitAspectWidget
 
 public:
     QmakeKitAspectWidget(Kit *k, const KitAspect *ki)
-        : KitAspectWidget(k, ki), m_lineEdit(new QLineEdit)
+        : KitAspectWidget(k, ki), m_lineEdit(createSubWidget<QLineEdit>())
     {
         refresh(); // set up everything according to kit
         m_lineEdit->setToolTip(ki->description());
@@ -61,7 +62,12 @@ public:
     ~QmakeKitAspectWidget() override { delete m_lineEdit; }
 
 private:
-    QWidget *mainWidget() const override { return m_lineEdit; }
+    void addToLayout(LayoutBuilder &builder) override
+    {
+        addMutableAction(m_lineEdit);
+        builder.addItem(m_lineEdit);
+    }
+
     void makeReadOnly() override { m_lineEdit->setEnabled(false); }
 
     void refresh() override

src/plugins/qtsupport/qtkitinformation.cpp

@@ -37,6 +37,7 @@
 #include <projectexplorer/toolchainmanager.h>
 #include <utils/algorithm.h>
 #include <utils/buildablehelperlibrary.h>
+#include <utils/layoutbuilder.h>
 #include <utils/macroexpander.h>
 #include <utils/qtcassert.h>
 
@@ -55,14 +56,14 @@ class QtKitAspectWidget final : public KitAspectWidget
 public:
     QtKitAspectWidget(Kit *k, const KitAspect *ki) : KitAspectWidget(k, ki)
     {
-        m_combo = new QComboBox;
+        m_combo = createSubWidget<QComboBox>();
         m_combo->setSizePolicy(QSizePolicy::Ignored, m_combo->sizePolicy().verticalPolicy());
         m_combo->addItem(tr("None"), -1);
 
         QList<int> versionIds = Utils::transform(QtVersionManager::versions(), &BaseQtVersion::uniqueId);
         versionsChanged(versionIds, QList<int>(), QList<int>());
 
-        m_manageButton = new QPushButton(KitAspectWidget::msgManage());
+        m_manageButton = createSubWidget<QPushButton>(KitAspectWidget::msgManage());
 
         refresh();
         m_combo->setToolTip(ki->description());
@@ -84,8 +85,13 @@ public:
 
 private:
     void makeReadOnly() final { m_combo->setEnabled(false); }
-    QWidget *mainWidget() const final { return m_combo; }
-    QWidget *buttonWidget() const final { return m_manageButton; }
+
+    void addToLayout(LayoutBuilder &builder)
+    {
+        addMutableAction(m_combo);
+        builder.addItem(m_combo);
+        builder.addItem(m_manageButton);
+    }
 
     void refresh() final
     {
@@ -125,7 +131,7 @@ private:
 
     void manageQtVersions()
     {
-        Core::ICore::showOptionsDialog(Constants::QTVERSION_SETTINGS_PAGE_ID, buttonWidget());
+        Core::ICore::showOptionsDialog(Constants::QTVERSION_SETTINGS_PAGE_ID, m_manageButton);
     }
 
     void currentWasChanged(int idx)