Core: Remove 'properties' feature

Even QtCore alone cannot be built without the properties feature since
Qt 5.5. While fixing this is easy, other modules like dbus,
networking are also using QObject::property() and friends liberally.

All in all I doubt that anybody will miss the feature (otherwise it
would have been fixed in the last decade).

Change-Id: Iaf3cc20bda54ee2ff3b809fac8fa82b94ecc88c0
Reviewed-by: Lars Knoll <lars.knoll@qt.io>
Reviewed-by: Edward Welbourne <edward.welbourne@qt.io>

src/corelib/configure.cmake

@@ -679,12 +679,6 @@ qt_feature("threadsafe-cloexec"
 )
 qt_feature_definition("threadsafe-cloexec" "QT_THREADSAFE_CLOEXEC" VALUE "1")
 qt_feature_config("threadsafe-cloexec" QMAKE_PUBLIC_QT_CONFIG)
-qt_feature("properties" PUBLIC
-    SECTION "Kernel"
-    LABEL "Properties"
-    PURPOSE "Supports scripting Qt-based applications."
-)
-qt_feature_definition("properties" "QT_NO_PROPERTIES" NEGATE VALUE "1")
 qt_feature("regularexpression" PUBLIC
     SECTION "Kernel"
     LABEL "QRegularExpression"
@@ -861,7 +855,7 @@ qt_feature("animation" PUBLIC
     SECTION "Utilities"
     LABEL "Animation"
     PURPOSE "Provides a framework for animations."
-    CONDITION QT_FEATURE_properties AND QT_FEATURE_easingcurve
+    CONDITION QT_FEATURE_easingcurve
 )
 qt_feature_definition("animation" "QT_NO_ANIMATION" NEGATE VALUE "1")
 qt_feature("gestures" PUBLIC

src/corelib/kernel/qobject.cpp

@@ -4048,8 +4048,6 @@ int QObjectPrivate::signalIndex(const char *signalName,
   Properties
  *****************************************************************************/
 
-#ifndef QT_NO_PROPERTIES
-
 /*!
   Sets the value of the object's \a name property to \a value.
 
@@ -4163,9 +4161,6 @@ QList<QByteArray> QObject::dynamicPropertyNames() const
     return QList<QByteArray>();
 }
 
-#endif // QT_NO_PROPERTIES
-
-
 /*****************************************************************************
   QObject debugging output routines.
  *****************************************************************************/

src/corelib/kernel/qobject.h

@@ -397,13 +397,11 @@ public:
     void dumpObjectTree() const;
     void dumpObjectInfo() const;
 
-#ifndef QT_NO_PROPERTIES
     bool setProperty(const char *name, const QVariant &value);
     QVariant property(const char *name) const;
     QList<QByteArray> dynamicPropertyNames() const;
     QBindingStorage *bindingStorage() { return &d_ptr->bindingStorage; }
     const QBindingStorage *bindingStorage() const { return &d_ptr->bindingStorage; }
-#endif // QT_NO_PROPERTIES
 
 Q_SIGNALS:
     void destroyed(QObject * = nullptr);

src/gui/configure.cmake

@@ -1158,7 +1158,6 @@ qt_feature("accessibility" PUBLIC
     SECTION "Utilities"
     LABEL "Accessibility"
     PURPOSE "Provides accessibility support."
-    CONDITION QT_FEATURE_properties
 )
 qt_feature_definition("accessibility" "QT_NO_ACCESSIBILITY" NEGATE VALUE "1")
 qt_feature("multiprocess" PRIVATE

src/gui/kernel/qguiapplication.cpp

@@ -1281,7 +1281,6 @@ static void init_platform(const QString &pluginNamesWithArguments, const QString
     if (!QGuiApplicationPrivate::platform_theme)
         QGuiApplicationPrivate::platform_theme = new QPlatformTheme;
 
-#ifndef QT_NO_PROPERTIES
     // Set arguments as dynamic properties on the native interface as
     // boolean 'foo' or strings: 'foo=bar'
     if (!platformArguments.isEmpty()) {
@@ -1296,7 +1295,6 @@ static void init_platform(const QString &pluginNamesWithArguments, const QString
             }
         }
     }
-#endif
 
     const auto platformIntegration = QGuiApplicationPrivate::platformIntegration();
     fontSmoothingGamma = platformIntegration->styleHint(QPlatformIntegration::FontSmoothingGamma).toReal();

src/testlib/qtestblacklist.cpp

@@ -191,14 +191,12 @@ static QSet<QByteArray> keywords()
             << "cmake"
             ;
 
-#if QT_CONFIG(properties)
             QCoreApplication *app = QCoreApplication::instance();
             if (app) {
                 const QVariant platformName = app->property("platformName");
                 if (platformName.isValid())
                     set << platformName.toByteArray();
             }
-#endif
 
             return set;
 }

src/tools/moc/generator.cpp

@@ -1022,8 +1022,6 @@ void Generator::generateMetacall()
     }
 
     if (cdef->propertyList.size()) {
-
-        fprintf(out, "\n#ifndef QT_NO_PROPERTIES\n    ");
         if (needElse)
             fprintf(out, "else ");
         fprintf(out,
@@ -1032,7 +1030,6 @@ void Generator::generateMetacall()
             "            || _c == QMetaObject::RegisterPropertyMetaType) {\n"
             "        qt_static_metacall(this, _c, _id, _a);\n"
             "        _id -= %d;\n    }", int(cdef->propertyList.count()));
-        fprintf(out, "\n#endif // QT_NO_PROPERTIES");
     }
     if (methodList.size() || cdef->propertyList.size())
         fprintf(out, "\n    ");
@@ -1283,8 +1280,6 @@ void Generator::generateStaticMetacall()
             needReset |= !p.reset.isEmpty();
             hasBindableProperties |= !p.bind.isEmpty();
         }
-        fprintf(out, "\n#ifndef QT_NO_PROPERTIES\n    ");
-
         if (needElse)
             fprintf(out, "else ");
         fprintf(out, "if (_c == QMetaObject::ReadProperty) {\n");
@@ -1429,7 +1424,6 @@ void Generator::generateStaticMetacall()
             fprintf(out, "        }\n");
         }
         fprintf(out, "    }");
-        fprintf(out, "\n#endif // QT_NO_PROPERTIES");
         needElse = true;
     }
 

src/widgets/configure.cmake

@@ -42,7 +42,7 @@ qt_feature("style-stylesheet" PUBLIC
     SECTION "Styles"
     LABEL "QStyleSheetStyle"
     PURPOSE "Provides a widget style which is configurable via CSS."
-    CONDITION QT_FEATURE_style_windows AND QT_FEATURE_properties AND QT_FEATURE_cssparser
+    CONDITION QT_FEATURE_style_windows AND QT_FEATURE_cssparser
 )
 qt_feature_definition("style-stylesheet" "QT_NO_STYLE_STYLESHEET" NEGATE VALUE "1")
 qt_feature("effects" PRIVATE
@@ -355,7 +355,7 @@ qt_feature("textedit" PUBLIC
     SECTION "Widgets"
     LABEL "QTextEdit"
     PURPOSE "Supports rich text editing."
-    CONDITION QT_FEATURE_scrollarea AND QT_FEATURE_properties AND QT_FEATURE_widgettextcontrol
+    CONDITION QT_FEATURE_scrollarea AND QT_FEATURE_widgettextcontrol
 )
 qt_feature_definition("textedit" "QT_NO_TEXTEDIT" NEGATE VALUE "1")
 qt_feature("syntaxhighlighter" PUBLIC
@@ -468,7 +468,7 @@ qt_feature("wizard" PUBLIC
     SECTION "Dialogs"
     LABEL "QWizard"
     PURPOSE "Provides a framework for multi-page click-through dialogs."
-    CONDITION ( QT_FEATURE_dialog ) AND ( QT_FEATURE_pushbutton ) AND ( QT_FEATURE_properties ) AND ( QT_FEATURE_label )
+    CONDITION ( QT_FEATURE_dialog ) AND ( QT_FEATURE_pushbutton ) AND ( QT_FEATURE_label )
 )
 qt_feature_definition("wizard" "QT_NO_WIZARD" NEGATE VALUE "1")
 qt_feature("listview" PUBLIC
@@ -496,7 +496,7 @@ qt_feature("datawidgetmapper" PUBLIC
     SECTION "ItemViews"
     LABEL "QDataWidgetMapper"
     PURPOSE "Provides mapping between a section of a data model to widgets."
-    CONDITION QT_FEATURE_itemviews AND QT_FEATURE_properties
+    CONDITION QT_FEATURE_itemviews
 )
 qt_feature_definition("datawidgetmapper" "QT_NO_DATAWIDGETMAPPER" NEGATE VALUE "1")
 qt_feature("columnview" PUBLIC

src/widgets/dialogs/qinputdialog.cpp

@@ -118,9 +118,7 @@ private slots:
 private:
     void keyPressEvent(QKeyEvent *event) override {
         if ((event->key() == Qt::Key_Return || event->key() == Qt::Key_Enter) && !hasAcceptableInput()) {
-#ifndef QT_NO_PROPERTIES
             setProperty("value", property("value"));
-#endif
         } else {
             QSpinBox::keyPressEvent(event);
         }
@@ -153,9 +151,7 @@ private slots:
 private:
     void keyPressEvent(QKeyEvent *event) override {
         if ((event->key() == Qt::Key_Return || event->key() == Qt::Key_Enter) && !hasAcceptableInput()) {
-#ifndef QT_NO_PROPERTIES
             setProperty("value", property("value"));
-#endif
         } else {
             QDoubleSpinBox::keyPressEvent(event);
         }

src/widgets/itemviews/qitemdelegate.cpp

@@ -522,10 +522,6 @@ QWidget *QItemDelegate::createEditor(QWidget *parent,
 
 void QItemDelegate::setEditorData(QWidget *editor, const QModelIndex &index) const
 {
-#ifdef QT_NO_PROPERTIES
-    Q_UNUSED(editor);
-    Q_UNUSED(index);
-#else
     QVariant v = index.data(Qt::EditRole);
     QByteArray n = editor->metaObject()->userProperty().name();
 
@@ -534,7 +530,6 @@ void QItemDelegate::setEditorData(QWidget *editor, const QModelIndex &index) con
             v = QVariant(editor->property(n).metaType());
         editor->setProperty(n, v);
     }
-#endif
 }
 
 /*!
@@ -552,11 +547,6 @@ void QItemDelegate::setModelData(QWidget *editor,
                                  QAbstractItemModel *model,
                                  const QModelIndex &index) const
 {
-#ifdef QT_NO_PROPERTIES
-    Q_UNUSED(model);
-    Q_UNUSED(editor);
-    Q_UNUSED(index);
-#else
     Q_D(const QItemDelegate);
     Q_ASSERT(model);
     Q_ASSERT(editor);
@@ -566,7 +556,6 @@ void QItemDelegate::setModelData(QWidget *editor,
             model->data(index, Qt::EditRole).userType());
     if (!n.isEmpty())
         model->setData(index, editor->property(n), Qt::EditRole);
-#endif
 }
 
 /*!

src/widgets/itemviews/qstyleditemdelegate.cpp

@@ -458,10 +458,6 @@ QWidget *QStyledItemDelegate::createEditor(QWidget *parent,
 */
 void QStyledItemDelegate::setEditorData(QWidget *editor, const QModelIndex &index) const
 {
-#ifdef QT_NO_PROPERTIES
-    Q_UNUSED(editor);
-    Q_UNUSED(index);
-#else
     QVariant v = index.data(Qt::EditRole);
     QByteArray n = editor->metaObject()->userProperty().name();
 
@@ -470,7 +466,6 @@ void QStyledItemDelegate::setEditorData(QWidget *editor, const QModelIndex &inde
             v = QVariant(editor->property(n).metaType());
         editor->setProperty(n, v);
     }
-#endif
 }
 
 /*!
@@ -487,11 +482,6 @@ void QStyledItemDelegate::setModelData(QWidget *editor,
                                  QAbstractItemModel *model,
                                  const QModelIndex &index) const
 {
-#ifdef QT_NO_PROPERTIES
-    Q_UNUSED(model);
-    Q_UNUSED(editor);
-    Q_UNUSED(index);
-#else
     Q_D(const QStyledItemDelegate);
     Q_ASSERT(model);
     Q_ASSERT(editor);
@@ -501,7 +491,6 @@ void QStyledItemDelegate::setModelData(QWidget *editor,
             model->data(index, Qt::EditRole).userType());
     if (!n.isEmpty())
         model->setData(index, editor->property(n), Qt::EditRole);
-#endif
 }
 
 /*!

src/widgets/kernel/qwidget.cpp

@@ -9236,7 +9236,6 @@ bool QWidget::event(QEvent *event)
         d->renderToTextureReallyDirty = 1;
 #endif
         break;
-#ifndef QT_NO_PROPERTIES
     case QEvent::DynamicPropertyChange: {
         const QByteArray &propName = static_cast<QDynamicPropertyChangeEvent *>(event)->propertyName();
         if (propName.length() == 13 && !qstrncmp(propName, "_q_customDpi", 12)) {
@@ -9254,7 +9253,6 @@ bool QWidget::event(QEvent *event)
             windowHandle()->setProperty(propName, property(propName));
         Q_FALLTHROUGH();
     }
-#endif
     default:
         return QObject::event(event);
     }

src/widgets/widgets/qwidgettextcontrol.cpp

@@ -1433,9 +1433,7 @@ QRectF QWidgetTextControlPrivate::rectForPosition(int position) const
     int cursorWidth;
     {
         bool ok = false;
-#ifndef QT_NO_PROPERTIES
         cursorWidth = docLayout->property("cursorWidth").toInt(&ok);
-#endif
         if (!ok)
             cursorWidth = 1;
     }
@@ -2468,24 +2466,16 @@ void QWidgetTextControl::setOverwriteMode(bool overwrite)
 
 int QWidgetTextControl::cursorWidth() const
 {
-#ifndef QT_NO_PROPERTIES
     Q_D(const QWidgetTextControl);
     return d->doc->documentLayout()->property("cursorWidth").toInt();
-#else
-    return 1;
-#endif
 }
 
 void QWidgetTextControl::setCursorWidth(int width)
 {
     Q_D(QWidgetTextControl);
-#ifdef QT_NO_PROPERTIES
-    Q_UNUSED(width);
-#else
     if (width == -1)
         width = QApplication::style()->pixelMetric(QStyle::PM_TextCursorWidth, nullptr);
     d->doc->documentLayout()->setProperty("cursorWidth", width);
-#endif
     d->repaintCursor();
 }
 

tests/auto/corelib/kernel/qmetaobjectbuilder/tst_qmetaobjectbuilder.cpp

@@ -1481,9 +1481,7 @@ int TestObject::qt_metacall(QMetaObject::Call _c, int _id, void **_a)
         if (_id < ownMethodCount)
             qt_static_metacall(this, _c, _id, _a);
         _id -= ownMethodCount;
-    }
+    } else if (_c == QMetaObject::ReadProperty) {
-#ifndef QT_NO_PROPERTIES
-      else if (_c == QMetaObject::ReadProperty) {
         void *_v = _a[0];
         switch (_id) {
         case 0: *reinterpret_cast< int*>(_v) = intProp(); break;
@@ -1506,7 +1504,6 @@ int TestObject::qt_metacall(QMetaObject::Call _c, int _id, void **_a)
     } else if (_c == QMetaObject::ResetProperty) {
         _id -= ownPropertyCount;
     }
-#endif // QT_NO_PROPERTIES
     return _id;
 }
 

tests/auto/widgets/widgets/qcombobox/tst_qcombobox.cpp

@@ -1481,14 +1481,12 @@ void tst_QComboBox::setCurrentText()
     else
         QCOMPARE(testWidget->currentText(), QString("foo"));
 
-#ifndef QT_NO_PROPERTIES
     // verify WRITE for currentText property
     testWidget->setCurrentIndex(0);
     const QByteArray n("currentText");
     QCOMPARE(testWidget->property(n).toString(), QString("foo"));
     testWidget->setProperty(n, QString("bar"));
     QCOMPARE(testWidget->property(n).toString(), QString("bar"));
-#endif
 }
 
 void tst_QComboBox::currentTextChanged_data()