examples: Take advantage of user_data passed

The last parameter of the signal callback from .ui
is the template's object from which the class is
derived.

And so, we already have access to the window object.
Let's just use it.

examples/application10/exampleappwin.c

@@ -22,9 +22,9 @@ struct _ExampleAppWindow
 G_DEFINE_TYPE (ExampleAppWindow, example_app_window, GTK_TYPE_APPLICATION_WINDOW)
 
 static void
-search_text_changed (GtkEntry *entry)
+search_text_changed (GtkEntry         *entry,
+                     ExampleAppWindow *win)
 {
-  ExampleAppWindow *win;
   const gchar *text;
   GtkWidget *tab;
   GtkWidget *view;
@@ -36,8 +36,6 @@ search_text_changed (GtkEntry *entry)
   if (text[0] == '\0')
     return;
 
-  win = EXAMPLE_APP_WINDOW (gtk_widget_get_toplevel (GTK_WIDGET (entry)));
-
   tab = gtk_stack_get_visible_child (GTK_STACK (win->stack));
   view = gtk_bin_get_child (GTK_BIN (tab));
   buffer = gtk_text_view_get_buffer (GTK_TEXT_VIEW (view));
@@ -154,14 +152,12 @@ update_lines (ExampleAppWindow *win)
 
 static void
 visible_child_changed (GObject          *stack,
-                       GParamSpec *pspec)
+                       GParamSpec       *pspec,
+                       ExampleAppWindow *win)
 {
-  ExampleAppWindow *win;
-
   if (gtk_widget_in_destruction (GTK_WIDGET (stack)))
     return;
 
-  win = EXAMPLE_APP_WINDOW (gtk_widget_get_toplevel (GTK_WIDGET (stack)));
   gtk_search_bar_set_search_mode (GTK_SEARCH_BAR (win->searchbar), FALSE);
   update_words (win);
   update_lines (win);

examples/application7/exampleappwin.c

@@ -16,9 +16,9 @@ struct _ExampleAppWindow
 G_DEFINE_TYPE (ExampleAppWindow, example_app_window, GTK_TYPE_APPLICATION_WINDOW)
 
 static void
-search_text_changed (GtkEntry *entry)
+search_text_changed (GtkEntry         *entry,
+                     ExampleAppWindow *win)
 {
-  ExampleAppWindow *win;
   const gchar *text;
   GtkWidget *tab;
   GtkWidget *view;
@@ -30,8 +30,6 @@ search_text_changed (GtkEntry *entry)
   if (text[0] == '\0')
     return;
 
-  win = EXAMPLE_APP_WINDOW (gtk_widget_get_toplevel (GTK_WIDGET (entry)));
-
   tab = gtk_stack_get_visible_child (GTK_STACK (win->stack));
   view = gtk_bin_get_child (GTK_BIN (tab));
   buffer = gtk_text_view_get_buffer (GTK_TEXT_VIEW (view));
@@ -49,15 +47,12 @@ search_text_changed (GtkEntry *entry)
 
 static void
 visible_child_changed (GObject          *stack,
-                       GParamSpec *pspec)
+                       GParamSpec       *pspec,
+                       ExampleAppWindow *win)
 {
-  ExampleAppWindow *win;
-
   if (gtk_widget_in_destruction (GTK_WIDGET (stack)))
     return;
 
-  win = EXAMPLE_APP_WINDOW (gtk_widget_get_toplevel (GTK_WIDGET (stack)));
-
   gtk_search_bar_set_search_mode (GTK_SEARCH_BAR (win->searchbar), FALSE);
 }
 

examples/application8/exampleappwin.c

@@ -20,9 +20,9 @@ struct _ExampleAppWindow
 G_DEFINE_TYPE (ExampleAppWindow, example_app_window, GTK_TYPE_APPLICATION_WINDOW)
 
 static void
-search_text_changed (GtkEntry *entry)
+search_text_changed (GtkEntry         *entry,
+                     ExampleAppWindow *win)
 {
-  ExampleAppWindow *win;
   const gchar *text;
   GtkWidget *tab;
   GtkWidget *view;
@@ -34,8 +34,6 @@ search_text_changed (GtkEntry *entry)
   if (text[0] == '\0')
     return;
 
-  win = EXAMPLE_APP_WINDOW (gtk_widget_get_toplevel (GTK_WIDGET (entry)));
-
   tab = gtk_stack_get_visible_child (GTK_STACK (win->stack));
   view = gtk_bin_get_child (GTK_BIN (tab));
   buffer = gtk_text_view_get_buffer (GTK_TEXT_VIEW (view));
@@ -120,15 +118,12 @@ done:
 
 static void
 visible_child_changed (GObject          *stack,
-                       GParamSpec *pspec)
+                       GParamSpec       *pspec,
+                       ExampleAppWindow *win)
 {
-  ExampleAppWindow *win;
-
   if (gtk_widget_in_destruction (GTK_WIDGET (stack)))
     return;
 
-  win = EXAMPLE_APP_WINDOW (gtk_widget_get_toplevel (GTK_WIDGET (stack)));
-
   gtk_search_bar_set_search_mode (GTK_SEARCH_BAR (win->searchbar), FALSE);
   update_words (win);
 }

examples/application9/exampleappwin.c

@@ -22,9 +22,9 @@ struct _ExampleAppWindow
 G_DEFINE_TYPE (ExampleAppWindow, example_app_window, GTK_TYPE_APPLICATION_WINDOW)
 
 static void
-search_text_changed (GtkEntry *entry)
+search_text_changed (GtkEntry         *entry,
+                     ExampleAppWindow *win)
 {
-  ExampleAppWindow *win;
   const gchar *text;
   GtkWidget *tab;
   GtkWidget *view;
@@ -36,8 +36,6 @@ search_text_changed (GtkEntry *entry)
   if (text[0] == '\0')
     return;
 
-  win = EXAMPLE_APP_WINDOW (gtk_widget_get_toplevel (GTK_WIDGET (entry)));
-
   tab = gtk_stack_get_visible_child (GTK_STACK (win->stack));
   view = gtk_bin_get_child (GTK_BIN (tab));
   buffer = gtk_text_view_get_buffer (GTK_TEXT_VIEW (view));
@@ -154,14 +152,12 @@ update_lines (ExampleAppWindow *win)
 
 static void
 visible_child_changed (GObject          *stack,
-                       GParamSpec *pspec)
+                       GParamSpec       *pspec,
+                       ExampleAppWindow *win)
 {
-  ExampleAppWindow *win;
-
   if (gtk_widget_in_destruction (GTK_WIDGET (stack)))
     return;
 
-  win = EXAMPLE_APP_WINDOW (gtk_widget_get_toplevel (GTK_WIDGET (stack)));
   gtk_search_bar_set_search_mode (GTK_SEARCH_BAR (win->searchbar), FALSE);
   update_words (win);
   update_lines (win);