ProjectExplorer: (Ab-)Use window title for panel tab display name

Moves the specification of the name closer to the widget itself and
simplifies the overall structure, at the price of some (bearable) obscurity.

Change-Id: I8c8f15175e64f8d406cbd742d158e681f67ec316
Reviewed-by: Christian Kandeler <christian.kandeler@qt.io>

src/plugins/projectexplorer/buildsettingspropertiespage.cpp

@@ -74,6 +74,8 @@ private:
 BuildSettingsWidget::BuildSettingsWidget(Target *target)
     : m_target(target)
 {
+    setWindowTitle(Tr::tr("Build Settings"));
+
     auto vbox = new QVBoxLayout(this);
     vbox->setContentsMargins(0, 0, 0, 0);
 

src/plugins/projectexplorer/panelswidget.cpp

@@ -60,6 +60,7 @@ PanelsWidget::~PanelsWidget() = default;
 
 void PanelsWidget::addWidget(QWidget *widget)
 {
+    setWindowTitle(widget->windowTitle());
     widget->setContentsMargins(0, CONTENTS_MARGIN, 0, BELOW_CONTENTS_MARGIN);
     widget->setParent(m_root);
     m_layout->addWidget(widget);

src/plugins/projectexplorer/projectcommentssettings.cpp

@@ -99,6 +99,7 @@ public:
         : m_settings(project)
     {
         setGlobalSettingsId(TextEditor::Constants::TEXT_EDITOR_COMMENTS_SETTINGS);
+
         const auto layout = new QVBoxLayout(this);
         layout->setContentsMargins(0, 0, 0, 0);
         layout->addWidget(&m_widget);

src/plugins/projectexplorer/projectpanelfactory.h

@@ -32,8 +32,9 @@ public:
 
     // interface for users of ProjectPanelFactory
     bool supports(Project *project);
-
-    using WidgetCreator = std::function<ProjectSettingsWidget *(Project *)>;
+    // Widgets created by this function should use setWindowTitle() to specify
+    // their tab title.
+    ProjectSettingsWidget *createWidget(Project *project) const;
 
     // interface for "implementations" of ProjectPanelFactory
     // by default all projects are supported, only set a custom supports function
@@ -45,8 +46,8 @@ public:
 
     Utils::TreeItem *createPanelItem(Project *project);
 
+    using WidgetCreator = std::function<ProjectSettingsWidget *(Project *)>;
     void setCreateWidgetFunction(const WidgetCreator &createWidgetFunction);
-    ProjectSettingsWidget *createWidget(Project *project) const;
 
 private:
     Utils::Id m_id;

src/plugins/projectexplorer/projectwindow.cpp

@@ -219,19 +219,7 @@ void BuildSystemOutputWindow::updateFilter()
                            0 /* after context */);
 }
 
-class ProjectPanel
-{
-public:
-    ProjectPanel() = default;
-    ProjectPanel(const QString &displayName, QWidget *widget)
-        : displayName(displayName), widget(widget)
-    {}
-
-    QString displayName;
-    QWidget *widget = nullptr;
-};
-
-using ProjectPanels = QList<ProjectPanel>;
+using ProjectPanels = QList<QWidget *>;
 
 // Overall structure:
 //
@@ -519,12 +507,10 @@ ProjectPanels MiscSettingsPanelItem::panelWidgets() const
         panel->addGlobalSettingsProperties(inner);
         panel->addWidget(inner);
         panel->setFocusProxy(inner);
+        panel->setWindowTitle(m_factory->displayName());
         m_widget = panel;
     }
-    ProjectPanel panel;
-    panel.displayName = m_factory->displayName();
-    panel.widget = m_widget;
-    return QList{panel};
+    return {m_widget.get()};
 }
 
 ProjectItemBase *MiscSettingsPanelItem::activeItem()
@@ -756,6 +742,8 @@ private:
 TargetSetupPageWrapper::TargetSetupPageWrapper(Project *project)
     : m_project(project)
 {
+    setWindowTitle(Tr::tr("Configure Project"));
+
     auto box = new QDialogButtonBox(this);
 
     m_configureButton = new QPushButton(this);
@@ -892,10 +880,7 @@ public:
         if (!m_runSettingsWidget)
             m_runSettingsWidget = createRunSettingsWidget(target());
 
-        return {
-            ProjectPanel(Tr::tr("Build Settings"), m_buildSettingsWidget),
-            ProjectPanel(Tr::tr("Run Settings"), m_runSettingsWidget)
-        };
+        return { m_buildSettingsWidget.get(), m_runSettingsWidget.get() };
     }
 
     void addToMenu(QMenu *menu) const final
@@ -1106,11 +1091,7 @@ ProjectPanels TargetGroupItem::panelWidgets() const
         m_targetSetupPage = panel;
     }
 
-    ProjectPanel panel;
-    panel.displayName = Tr::tr("Configure Project");
-    panel.widget = m_targetSetupPage;
-
-    return {panel};
+    return {m_targetSetupPage.get()};
 }
 
 void TargetGroupItem::itemActivatedFromBelow(const ProjectItemBase *)
@@ -1290,9 +1271,9 @@ public:
             m_tabWidget->removeTab(pos);
         }
 
-        for (const ProjectPanel &panel : panels) {
-            QTC_ASSERT(panel.widget, continue);
-            m_tabWidget->addTab(panel.widget, panel.displayName);
+        for (QWidget *panel : panels) {
+            QTC_ASSERT(panel, continue);
+            m_tabWidget->addTab(panel, panel->windowTitle());
         }
 
         m_tabWidget->setCurrentIndex(oldIndex);

src/plugins/projectexplorer/runsettingspropertiespage.cpp

@@ -245,6 +245,8 @@ private:
 RunSettingsWidget::RunSettingsWidget(Target *target)
     : m_target(target)
 {
+    setWindowTitle(Tr::tr("Run Settings"));
+
     m_deployConfigurationCombo = new QComboBox(this);
     setWheelScrollingWithoutFocusBlocked(m_deployConfigurationCombo);
     m_addDeployToolButton = new QPushButton(Tr::tr("Add"), this);