QmlDesigner: Implement kit changing in status bar

Task-number: QDS-8975
Change-Id: Ie28585b76697f785bea2d5bb3360a6949c9c55d8
Reviewed-by: Brook Cronin <brook.cronin@qt.io>
Reviewed-by: Thomas Hartmann <thomas.hartmann@qt.io>
Reviewed-by: <github-actions-qt-creator@cristianadam.eu>

share/qtcreator/qmldesigner/statusbar/Main.qml

@@ -48,18 +48,20 @@ Item {
                 elide: Text.ElideRight
             }
 
+
             TopLevelComboBox {
                 id: kits
                 style: StudioTheme.Values.statusbarControlStyle
-
-                width: 160
+                width: 200
                 anchors.verticalCenter: parent.verticalCenter
-                //anchors.left: settingButton.right
-                //anchors.leftMargin: 32
-                model: [ "Qt 6", "Qt 5", "Boot2Qt", "Android" ]
-                //onActivated: backend.setCurrentWorkspace(workspaces.currentText)
+                anchors.left: settingButton.right
+                anchors.leftMargin: 32
+                model: backend.kits
+                onActivated: backend.setCurrentKit(kits.currentIndex)
                 openUpwards: true
-                enabled: backend.isInDesignMode
+                enabled: backend.isInDesignMode && backend.isQt6
+                property int kitIndex: backend.currentKit
+                onKitIndexChanged: kits.currentIndex = backend.currentKit
             }
 
             Text {
@@ -78,8 +80,8 @@ Item {
                 style: StudioTheme.Values.statusbarControlStyle
                 width: 160
                 anchors.verticalCenter: parent.verticalCenter
-               // anchors.left: kits.right
-               // anchors.leftMargin: 32
+                anchors.left: kits.right
+                anchors.leftMargin: 32
                 model: backend.styles
                 onActivated: backend.setCurrentStyle(styles.currentIndex)
                 openUpwards: true

src/plugins/qmldesigner/components/toolbar/toolbarbackend.cpp

@@ -20,6 +20,7 @@
 #include <coreplugin/editormanager/editormanager.h>
 #include <coreplugin/icore.h>
 #include <coreplugin/modemanager.h>
+#include <projectexplorer/kitmanager.h>
 #include <projectexplorer/project.h>
 #include <projectexplorer/projectexplorer.h>
 #include <projectexplorer/projectexplorerconstants.h>
@@ -208,6 +209,29 @@ void ToolBarBackend::setCurrentStyle(int index)
     view->resetPuppet();
 }
 
+void ToolBarBackend::setCurrentKit(int index)
+{
+    auto project = ProjectExplorer::SessionManager::startupProject();
+    QTC_ASSERT(project, return );
+
+    const auto kits = ProjectExplorer::KitManager::kits();
+
+    QTC_ASSERT(kits.count() > index, return );
+    QTC_ASSERT(index >= 0, return );
+
+    const auto kit = kits.at(index);
+
+    auto newTarget = project->target(kit);
+    if (!newTarget)
+        newTarget = project->addTargetForKit(kit);
+
+    ProjectExplorer::SessionManager::setActiveTarget(project,
+                                                     newTarget,
+                                                     ProjectExplorer::SetActive::Cascade);
+
+    emit currentKitChanged();
+}
+
 bool ToolBarBackend::canGoBack() const
 {
     QTC_ASSERT(designModeWidget(), return false);
@@ -296,6 +320,25 @@ ToolBarBackend::ToolBarBackend(QObject *parent)
     connect(Core::ModeManager::instance(), &Core::ModeManager::currentModeChanged, this, [this]() {
         emit isInDesignModeChanged();
     });
+
+    connect(ProjectExplorer::SessionManager::instance(),
+            &ProjectExplorer::SessionManager::startupProjectChanged,
+            [this](ProjectExplorer::Project *project) {
+                disconnect(m_kitConnection);
+                emit isQt6Changed();
+                if (project) {
+                    m_kitConnection = connect(project,
+                                              &ProjectExplorer::Project::activeTargetChanged,
+                                              this,
+                                              &ToolBarBackend::currentKitChanged);
+                    emit currentKitChanged();
+                }
+            });
+
+    connect(ProjectExplorer::KitManager::instance(),
+            &ProjectExplorer::KitManager::kitsChanged,
+            this,
+            &ToolBarBackend::kitsChanged);
 }
 
 void ToolBarBackend::registerDeclarativeType()
@@ -379,6 +422,33 @@ int ToolBarBackend::currentStyle() const
     return index;
 }
 
+QStringList ToolBarBackend::kits() const
+{
+    return Utils::transform(ProjectExplorer::KitManager::kits(),
+                            [](ProjectExplorer::Kit *kit) { return kit->displayName(); });
+}
+
+int ToolBarBackend::currentKit() const
+{
+    if (auto target = ProjectExplorer::SessionManager::startupTarget()) {
+        auto kit = target->kit();
+        if (kit)
+            return kits().indexOf(kit->displayName());
+    }
+    return 0;
+}
+
+bool ToolBarBackend::isQt6() const
+{
+    const QmlProjectManager::QmlBuildSystem *buildSystem = qobject_cast<QmlProjectManager::QmlBuildSystem *>(
+        ProjectExplorer::SessionManager::startupTarget()->buildSystem());
+    QTC_ASSERT(buildSystem, return false);
+
+    const bool isQt6Project = buildSystem && buildSystem->qt6Project();
+
+    return isQt6Project;
+}
+
 void ToolBarBackend::setupWorkspaces()
 {
     m_workspaces.clear();

src/plugins/qmldesigner/components/toolbar/toolbarbackend.h

@@ -78,6 +78,9 @@ class ToolBarBackend : public QObject
     Q_PROPERTY(bool isInDesignMode READ isInDesignMode NOTIFY isInDesignModeChanged)
     Q_PROPERTY(bool isDesignModeEnabled READ isDesignModeEnabled NOTIFY isDesignModeEnabledChanged)
     Q_PROPERTY(int currentStyle READ currentStyle NOTIFY currentStyleChanged)
+    Q_PROPERTY(QStringList kits READ kits NOTIFY kitsChanged)
+    Q_PROPERTY(int currentKit READ currentKit NOTIFY currentKitChanged)
+    Q_PROPERTY(bool isQt6 READ isQt6 NOTIFY isQt6Changed)
 
 public:
     ToolBarBackend(QObject *parent  = nullptr);
@@ -95,6 +98,7 @@ public:
     Q_INVOKABLE void editGlobalAnnoation();
     Q_INVOKABLE void showZoomMenu(int x, int y);
     Q_INVOKABLE void setCurrentStyle(int index);
+    Q_INVOKABLE void setCurrentKit(int index);
 
     bool canGoBack() const;
     bool canGoForward() const;
@@ -113,6 +117,12 @@ public:
     bool isDesignModeEnabled() const;
     int currentStyle() const;
 
+    QStringList kits() const;
+
+    int currentKit() const;
+
+    bool isQt6() const;
+
 signals:
     void navigationHistoryChanged();
     void openDocumentsChanged();
@@ -122,6 +132,9 @@ signals:
     void isInDesignModeChanged();
     void isDesignModeEnabledChanged();
     void currentStyleChanged();
+    void kitsChanged();
+    void currentKitChanged();
+    void isQt6Changed();
 
 private:
     void setupWorkspaces();
@@ -130,6 +143,7 @@ private:
 
     QStringList m_openDocuments;
     QStringList m_workspaces;
+    QMetaObject::Connection m_kitConnection;
 };
 
 } // namespace QmlDesigner