examples: Document/Replace deprecated APIs

Author: bilelmoussaoui

examples/gif_paintable/gif_paintable_window/imp.rs

@@ -1,11 +1,10 @@
-use gtk::{glib, prelude::*, subclass::prelude::*};
+use gtk::{glib, subclass::prelude::*};
 
-#[derive(Debug, gtk::CompositeTemplate)]
+#[derive(Default, Debug, gtk::CompositeTemplate)]
 #[template(file = "gif_paintable_window.ui")]
 pub struct GifPaintableWindow {
     #[template_child]
     pub picture: TemplateChild<gtk::Picture>,
-    pub dialog: gtk::FileChooserNative,
 }
 
 #[glib::object_subclass]
@@ -14,40 +13,15 @@ impl ObjectSubclass for GifPaintableWindow {
     type Type = super::GifPaintableWindow;
     type ParentType = gtk::ApplicationWindow;
 
-    fn new() -> Self {
-        let gif_filter = gtk::FileFilter::new();
-        gif_filter.add_mime_type("image/gif");
-        gif_filter.set_name(Some("GIF Image"));
-
-        let dialog = gtk::FileChooserNative::builder()
-            .title("Open File")
-            .action(gtk::FileChooserAction::Open)
-            .accept_label("Open")
-            .cancel_label("Cancel")
-            .modal(true)
-            .build();
-
-        dialog.add_filter(&gif_filter);
-
-        Self {
-            dialog,
-            picture: TemplateChild::default(),
-        }
-    }
-
     fn class_init(klass: &mut Self::Class) {
         klass.bind_template();
         klass.install_action_async(
             "win.open",
             None,
             |win, _action_name, _action_target| async move {
-                let dialog = &win.imp().dialog;
-                dialog.set_transient_for(Some(&win));
-                if dialog.run_future().await == gtk::ResponseType::Accept {
-                    if let Err(error) = win.set_file(dialog.file().unwrap()) {
-                        println!("Error loading the GIF: {error}");
-                    }
-                }
+                if let Err(error) = win.open_file().await {
+                    println!("Error loading the GIF: {error}");
+                };
             },
         );
     }

examples/gif_paintable/gif_paintable_window/mod.rs

@@ -15,6 +15,27 @@ impl GifPaintableWindow {
         glib::Object::builder().property("application", app).build()
     }
 
+    pub async fn open_file(&self) -> Result<(), Box<dyn std::error::Error>> {
+        let gif_filter = gtk::FileFilter::new();
+        gif_filter.add_mime_type("image/gif");
+        gif_filter.set_name(Some("GIF Image"));
+
+        let filters = gio::ListStore::new::<gtk::FileFilter>();
+        filters.append(&gif_filter);
+
+        let dialog = gtk::FileDialog::builder()
+            .title("Open File")
+            .accept_label("Open")
+            .modal(true)
+            .filters(&filters)
+            .build();
+
+        let file = dialog.open_future(Some(self)).await?;
+        self.set_file(file)?;
+
+        Ok(())
+    }
+
     fn set_file(&self, file: gio::File) -> Result<(), Box<dyn std::error::Error>> {
         let paintable = GifPaintable::default();
         let (bytes, _) = file.load_contents(gio::Cancellable::NONE)?;

examples/list_box_model/list_box_row/imp.rs

@@ -1,3 +1,6 @@
+// gtk::Dialog was deprecated and applications are supposed
+// to use plain gtk::Window and structure it however they wish.
+#![allow(deprecated)]
 use std::cell::RefCell;
 
 use gtk::{

examples/list_box_model/main.rs

@@ -1,3 +1,6 @@
+// gtk::Dialog was deprecated and applications are supposed
+// to use plain gtk::Window and structure it however they wish.
+#![allow(deprecated)]
 mod list_box_row;
 mod model;
 pub mod row_data;