examples: Use IsA from prelude

Author: bilelmoussaoui

examples/composite_template/ex_application_window/mod.rs

@@ -1,6 +1,6 @@
 mod imp;
 
-use gtk::{gio, glib, subclass::prelude::*};
+use gtk::{gio, glib, prelude::*, subclass::prelude::*};
 
 glib::wrapper! {
     pub struct ExApplicationWindow(ObjectSubclass<imp::ExApplicationWindow>)
@@ -9,7 +9,7 @@ glib::wrapper! {
 }
 
 impl ExApplicationWindow {
-    pub fn new<P: glib::IsA<gtk::Application>>(app: &P) -> Self {
+    pub fn new<P: IsA<gtk::Application>>(app: &P) -> Self {
         glib::Object::builder().property("application", app).build()
     }
 

examples/custom_buildable/custom_buildable/mod.rs

@@ -9,13 +9,13 @@ glib::wrapper! {
 }
 
 impl CustomBuildable {
-    pub fn add_suffix<T: glib::IsA<gtk::Widget>>(&self, widget: &T) {
+    pub fn add_suffix<T: IsA<gtk::Widget>>(&self, widget: &T) {
         let imp = self.imp();
         imp.suffixes.append(widget);
         imp.suffixes.set_visible(true);
     }
 
-    pub fn add_prefix<T: glib::IsA<gtk::Widget>>(&self, widget: &T) {
+    pub fn add_prefix<T: IsA<gtk::Widget>>(&self, widget: &T) {
         let imp = self.imp();
         imp.prefixes.append(widget);
         imp.prefixes.set_visible(true);

examples/gif_paintable/gif_paintable_window/mod.rs

@@ -11,7 +11,7 @@ glib::wrapper! {
 }
 
 impl GifPaintableWindow {
-    pub fn new<P: glib::IsA<gtk::Application>>(app: &P) -> Self {
+    pub fn new<P: IsA<gtk::Application>>(app: &P) -> Self {
         glib::Object::builder().property("application", app).build()
     }
 

examples/video_player/video_player_window/mod.rs

@@ -1,6 +1,6 @@
 mod imp;
 
-use gtk::{gio, glib, subclass::prelude::*};
+use gtk::{gio, glib, prelude::*, subclass::prelude::*};
 
 glib::wrapper! {
     pub struct VideoPlayerWindow(ObjectSubclass<imp::VideoPlayerWindow>)
@@ -9,7 +9,7 @@ glib::wrapper! {
 }
 
 impl VideoPlayerWindow {
-    pub fn new<P: glib::IsA<gtk::Application>>(app: &P) -> Self {
+    pub fn new<P: IsA<gtk::Application>>(app: &P) -> Self {
         glib::Object::builder().property("application", app).build()
     }