LibCore: Make Core::Object::add<ChildType> return a ChildType&

Since the returned object is now owned by the callee object, we can
simply vend a ChildType&. This allows us to use "." instead of "->"
at the call site, which is quite nice. :^)

1 files changed, 54 insertions, 54 deletions

diff --git a/Demos/WidgetGallery/main.cpp b/Demos/WidgetGallery/main.cpp
index 2da3b765f8..f5c13579b2 100644
--- a/Demos/WidgetGallery/main.cpp
+++ b/Demos/WidgetGallery/main.cpp
@@ -53,74 +53,74 @@ int main(int argc, char** argv)
     main_widget.set_layout<GUI::VerticalBoxLayout>();
     main_widget.layout()->set_margins({ 4, 4, 4, 4 });
 
-    auto checkbox1 = main_widget.add<GUI::CheckBox>("GCheckBox 1");
+    auto& checkbox1 = main_widget.add<GUI::CheckBox>("GCheckBox 1");
     (void)checkbox1;
-    auto checkbox2 = main_widget.add<GUI::CheckBox>("GCheckBox 2");
-    checkbox2->set_enabled(false);
+    auto& checkbox2 = main_widget.add<GUI::CheckBox>("GCheckBox 2");
+    checkbox2.set_enabled(false);
 
-    auto radio1 = main_widget.add<GUI::RadioButton>("GRadioButton 1");
+    auto& radio1 = main_widget.add<GUI::RadioButton>("GRadioButton 1");
     (void)radio1;
-    auto radio2 = main_widget.add<GUI::RadioButton>("GRadioButton 2");
-    radio2->set_enabled(false);
+    auto& radio2 = main_widget.add<GUI::RadioButton>("GRadioButton 2");
+    radio2.set_enabled(false);
 
-    auto button1 = main_widget.add<GUI::Button>("GButton 1");
+    auto& button1 = main_widget.add<GUI::Button>("GButton 1");
     (void)button1;
-    auto button2 = main_widget.add<GUI::Button>("GButton 2");
-    button2->set_enabled(false);
-
-    auto progress1 = main_widget.add<GUI::ProgressBar>();
-    auto timer = progress1->add<Core::Timer>(100, [&] {
-        progress1->set_value(progress1->value() + 1);
-        if (progress1->value() == progress1->max())
-            progress1->set_value(progress1->min());
+    auto& button2 = main_widget.add<GUI::Button>("GButton 2");
+    button2.set_enabled(false);
+
+    auto& progress1 = main_widget.add<GUI::ProgressBar>();
+    progress1.add<Core::Timer>(100, [&] {
+        progress1.set_value(progress1.value() + 1);
+        if (progress1.value() == progress1.max())
+            progress1.set_value(progress1.min());
     });
 
-    auto label1 = main_widget.add<GUI::Label>("GLabel 1");
+    auto& label1 = main_widget.add<GUI::Label>("GLabel 1");
     (void)label1;
-    auto label2 = main_widget.add<GUI::Label>("GLabel 2");
-    label2->set_enabled(false);
+    auto& label2 = main_widget.add<GUI::Label>("GLabel 2");
+    label2.set_enabled(false);
 
-    auto textbox1 = main_widget.add<GUI::TextBox>();
-    textbox1->set_text("GTextBox 1");
-    auto textbox2 = main_widget.add<GUI::TextBox>();
-    textbox2->set_text("GTextBox 2");
-    textbox2->set_enabled(false);
+    auto& textbox1 = main_widget.add<GUI::TextBox>();
+    textbox1.set_text("GTextBox 1");
+    auto& textbox2 = main_widget.add<GUI::TextBox>();
+    textbox2.set_text("GTextBox 2");
+    textbox2.set_enabled(false);
 
-    auto spinbox1 = main_widget.add<GUI::SpinBox>();
+    auto& spinbox1 = main_widget.add<GUI::SpinBox>();
     (void)spinbox1;
-    auto spinbox2 = main_widget.add<GUI::SpinBox>();
-    spinbox2->set_enabled(false);
-
-    auto vertical_slider_container = main_widget.add<GUI::Widget>();
-    vertical_slider_container->set_size_policy(GUI::SizePolicy::Fill, GUI::SizePolicy::Fixed);
-    vertical_slider_container->set_preferred_size(0, 100);
-    vertical_slider_container->set_layout<GUI::HorizontalBoxLayout>();
-    auto vslider1 = vertical_slider_container->add<GUI::VerticalSlider>();
+    auto& spinbox2 = main_widget.add<GUI::SpinBox>();
+    spinbox2.set_enabled(false);
+
+    auto& vertical_slider_container = main_widget.add<GUI::Widget>();
+    vertical_slider_container.set_size_policy(GUI::SizePolicy::Fill, GUI::SizePolicy::Fixed);
+    vertical_slider_container.set_preferred_size(0, 100);
+    vertical_slider_container.set_layout<GUI::HorizontalBoxLayout>();
+    auto& vslider1 = vertical_slider_container.add<GUI::VerticalSlider>();
     (void)vslider1;
-    auto vslider2 = vertical_slider_container->add<GUI::VerticalSlider>();
-    vslider2->set_enabled(false);
-    auto vslider3 = vertical_slider_container->add<GUI::VerticalSlider>();
-    vslider3->set_max(5);
-    vslider3->set_knob_size_mode(GUI::Slider::KnobSizeMode::Proportional);
+    auto& vslider2 = vertical_slider_container.add<GUI::VerticalSlider>();
+    vslider2.set_enabled(false);
+    auto& vslider3 = vertical_slider_container.add<GUI::VerticalSlider>();
+    vslider3.set_max(5);
+    vslider3.set_knob_size_mode(GUI::Slider::KnobSizeMode::Proportional);
 
-    auto slider1 = main_widget.add<GUI::HorizontalSlider>();
+    auto& slider1 = main_widget.add<GUI::HorizontalSlider>();
     (void)slider1;
-    auto slider2 = main_widget.add<GUI::HorizontalSlider>();
-    slider2->set_enabled(false);
-    auto slider3 = main_widget.add<GUI::HorizontalSlider>();
-    slider3->set_max(5);
-    slider3->set_knob_size_mode(GUI::Slider::KnobSizeMode::Proportional);
-
-    auto scrollbar1 = main_widget.add<GUI::ScrollBar>(Orientation::Horizontal);
-    scrollbar1->set_size_policy(GUI::SizePolicy::Fill, GUI::SizePolicy::Fixed);
-    scrollbar1->set_preferred_size(0, 16);
-    scrollbar1->set_min(0);
-    scrollbar1->set_max(100);
-    scrollbar1->set_value(50);
-    auto scrollbar2 = main_widget.add<GUI::ScrollBar>(Orientation::Horizontal);
-    scrollbar2->set_size_policy(GUI::SizePolicy::Fill, GUI::SizePolicy::Fixed);
-    scrollbar2->set_preferred_size(0, 16);
-    scrollbar2->set_enabled(false);
+    auto& slider2 = main_widget.add<GUI::HorizontalSlider>();
+    slider2.set_enabled(false);
+    auto& slider3 = main_widget.add<GUI::HorizontalSlider>();
+    slider3.set_max(5);
+    slider3.set_knob_size_mode(GUI::Slider::KnobSizeMode::Proportional);
+
+    auto& scrollbar1 = main_widget.add<GUI::ScrollBar>(Orientation::Horizontal);
+    scrollbar1.set_size_policy(GUI::SizePolicy::Fill, GUI::SizePolicy::Fixed);
+    scrollbar1.set_preferred_size(0, 16);
+    scrollbar1.set_min(0);
+    scrollbar1.set_max(100);
+    scrollbar1.set_value(50);
+    auto& scrollbar2 = main_widget.add<GUI::ScrollBar>(Orientation::Horizontal);
+    scrollbar2.set_size_policy(GUI::SizePolicy::Fill, GUI::SizePolicy::Fixed);
+    scrollbar2.set_preferred_size(0, 16);
+    scrollbar2.set_enabled(false);
 
     window->show();