examples: Update composite_template to use template callbacks

gtk-rs · Nov 10, 2021 · dffbca4 · dffbca4
1 parent b11d782
commit dffbca4
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Showing 2 changed files with 16 additions and 18 deletions.
diff --git a/examples/composite_template/ex_menu_button/ex_menu_button.ui b/examples/composite_template/ex_menu_button/ex_menu_button.ui
@@ -6,6 +6,7 @@
     </property>
     <child>
       <object class="GtkToggleButton" id="toggle">
+        <signal name="toggled" handler="toggle_toggled" swapped="true"/>
         <property name="child">
           <object class="GtkBox">
             <property name="spacing">6</property>
@@ -28,6 +29,7 @@
     </child>
     <child>
       <object class="GtkPopover" id="popover">
+        <signal name="closed" handler="popover_closed" swapped="true"/>
         <property name="child">
           <object class="GtkLabel">
             <property name="label">Hello from a custom child widget!</property>

diff --git a/examples/composite_template/ex_menu_button/imp.rs b/examples/composite_template/ex_menu_button/imp.rs
@@ -3,7 +3,7 @@ use gtk::subclass::prelude::*;
 use gtk::{glib, CompositeTemplate};
 
 #[derive(Debug, Default, CompositeTemplate)]
-#[template(file = "ex_menu_button.ui")]
+#[template(file = "ex_menu_button.ui", callbacks)]
 pub struct ExMenuButton {
     #[template_child]
     pub toggle: TemplateChild<gtk::ToggleButton>,
@@ -26,25 +26,21 @@ impl ObjectSubclass for ExMenuButton {
     }
 }
 
-impl ObjectImpl for ExMenuButton {
-    fn constructed(&self, obj: &Self::Type) {
-        self.parent_constructed(obj);
-
-        let popover = &*self.popover;
-        self.toggle
-            .connect_toggled(glib::clone!(@weak popover => move |toggle| {
-                if toggle.is_active() {
-                    popover.popup();
-                }
-            }));
-
-        let toggle = &*self.toggle;
-        self.popover
-            .connect_closed(glib::clone!(@weak toggle => move |_| {
-                toggle.set_active(false);
-            }));
+#[gtk::template_callbacks]
+impl ExMenuButton {
+    #[template_callback]
+    fn toggle_toggled(&self, toggle: gtk::ToggleButton) {
+        if toggle.is_active() {
+            self.popover.popup();
+        }
     }
+    #[template_callback(name = "popover_closed")]
+    fn unset_toggle(&self) {
+        self.toggle.set_active(false);
+    }
+}
 
+impl ObjectImpl for ExMenuButton {
     // Needed for direct subclasses of GtkWidget;
     // Here you need to unparent all direct children
     // of your template.