library: Use SpinRow instead of its Adjustment (#710)

Author: UrtsiSantsi

src/Library/demos/CSS Gradients/main.blp

@@ -124,7 +124,7 @@ Adw.StatusPage {
       Adw.SpinRow spin_row_angle {
         title: _("Angle");
         climb-rate: 0.2;
-        adjustment: Adjustment adjustment_angle {
+        adjustment: Adjustment {
           lower: 0;
           upper: 360;
           step-increment: 10;

src/Library/demos/CSS Gradients/main.js

@@ -8,7 +8,6 @@ let css_provider;
 const combo_row_gradient_type = workbench.builder.get_object(
   "combo_row_gradient_type",
 );
-const adjustment_angle = workbench.builder.get_object("adjustment_angle");
 const spin_row_angle = workbench.builder.get_object("spin_row_angle");
 const button_color_1 = workbench.builder.get_object("button_color_1");
 const button_color_2 = workbench.builder.get_object("button_color_2");
@@ -17,7 +16,7 @@ const gtksource_buffer = workbench.builder.get_object("gtksource_buffer");
 const button_copy_css = workbench.builder.get_object("button_copy_css");
 
 combo_row_gradient_type.connect("notify::selected", update);
-adjustment_angle.connect("value-changed", update);
+spin_row_angle.connect("notify::value", update);
 button_color_1.connect("notify::rgba", update);
 button_color_2.connect("notify::rgba", update);
 button_color_3.connect("notify::rgba", update);
@@ -31,7 +30,7 @@ function update() {
 update();
 
 function generateCss() {
-  const angle_string = adjustment_angle.value;
+  const angle_string = spin_row_angle.value;
   const first_color_string = button_color_1.rgba.to_string();
   const second_color_string = button_color_2.rgba.to_string();
   const third_color_string = button_color_3.rgba.to_string();

src/Library/demos/Stack/main.blp

@@ -7,7 +7,7 @@ Box root_box {
   valign: center;
   Stack stack {
     interpolate-size: bind interpolate_switch.active;
-    transition-duration: bind transition_adjustment.value;
+    transition-duration: bind transition_spin_button.value;
     transition-type: bind transition_row.selected;
 
     StackPage page1 {
@@ -78,7 +78,7 @@ Box root_box {
 
           Adw.SpinRow transition_spin_button {
             title: _("Transition Duration");
-            adjustment: Adjustment transition_adjustment {
+            adjustment: Adjustment {
               step-increment: 10;
               lower: 100;
               upper: 1000;