Assistant: Add get_page()

Use get_page() instead of page specific methods

gajim/gtk/assistant.py

@@ -114,11 +114,8 @@ def show_page(self, name, transition=Gtk.StackTransitionType.NONE):
         self._set_buttons_visible(buttons)
         self._ui.stack.set_visible_child_full(name, transition)
 
-    def get_error_page(self):
-        return self._pages['error']
-
-    def get_success_page(self):
-        return self._pages['success']
+    def get_page(self, name):
+        return self._pages[name]
 
     def _set_buttons_visible(self, buttons):
         for button in self._buttons.values():

test/gtk/assistant.py

@@ -20,6 +20,16 @@ def __init__(self):
         self.add_default_page('error')
         self.add_default_page('success')
 
+        success_page = self.get_page('success')
+        success_page.set_title('Success')
+        success_page.set_heading('Success Heading')
+        success_page.set_text('This is the success text')
+
+        error_page = self.get_page('error')
+        error_page.set_title('Error')
+        error_page.set_heading('Error Heading')
+        error_page.set_text('This is the error text')
+
         self.add_button('forward', 'Forward', 'suggested-action')
         self.add_button('close', 'Close', 'destructive-action')
         self.add_button('back', 'Back')
@@ -77,17 +87,9 @@ def _on_page_changed(self, _assistant, page_name):
             self.set_default_button('forward')
 
         elif page_name == 'success':
-            success_page = self.get_success_page()
-            success_page.set_title('Success')
-            success_page.set_heading('Success Heading')
-            success_page.set_text('This is the success text')
             self.set_default_button('forward')
 
         elif page_name == 'error':
-            error_page = self.get_error_page()
-            error_page.set_title('Error')
-            error_page.set_heading('Error Heading')
-            error_page.set_text('This is the error text')
             self.set_default_button('back')