Create function focus_file_text

This function focuses the text field when saving a file
It is called when the save file dialogue is opened

editor/editor_file_dialog.cpp

@@ -52,6 +52,15 @@ EditorFileDialog::RegisterFunc EditorFileDialog::unregister_func = nullptr;
 
 void EditorFileDialog::popup_file_dialog() {
 	popup_centered_clamped(Size2(1050, 700) * EDSCALE, 0.8);
+	_focus_file_text();
+}
+
+void EditorFileDialog::_focus_file_text() {
+	int lp = file->get_text().rfind(".");
+	if (lp != -1) {
+		file->select(0, lp);
+		file->grab_focus();
+	}
 }
 
 VBoxContainer *EditorFileDialog::get_vbox() {
@@ -974,11 +983,7 @@ void EditorFileDialog::set_current_file(const String &p_file) {
 	file->set_text(p_file);
 	update_dir();
 	invalidate();
-	int lp = p_file.rfind(".");
-	if (lp != -1) {
-		file->select(0, lp);
-		file->grab_focus();
-	}
+	_focus_file_text();
 
 	if (is_visible()) {
 		_request_single_thumbnail(get_current_dir().plus_file(get_current_file()));

editor/editor_file_dialog.h

@@ -149,6 +149,8 @@ private:
 	void update_file_list();
 	void update_filters();
 
+	void _focus_file_text();
+
 	void _update_favorites();
 	void _favorite_pressed();
 	void _favorite_selected(int p_idx);

scene/gui/file_dialog.cpp

@@ -42,6 +42,17 @@ FileDialog::RegisterFunc FileDialog::unregister_func = nullptr;
 
 void FileDialog::popup_file_dialog() {
 	popup_centered_clamped(Size2i(700, 500), 0.8f);
+	_focus_file_text();
+}
+
+void FileDialog::_focus_file_text() {
+	int lp = file->get_text().rfind(".");
+	if (lp != -1) {
+		file->select(0, lp);
+		if (file->is_inside_tree() && !get_tree()->is_node_being_edited(file)) {
+			file->grab_focus();
+		}
+	}
 }
 
 VBoxContainer *FileDialog::get_vbox() {
@@ -688,13 +699,7 @@ void FileDialog::set_current_file(const String &p_file) {
 	file->set_text(p_file);
 	update_dir();
 	invalidate();
-	int lp = p_file.rfind(".");
-	if (lp != -1) {
-		file->select(0, lp);
-		if (file->is_inside_tree() && !get_tree()->is_node_being_edited(file)) {
-			file->grab_focus();
-		}
-	}
+	_focus_file_text();
 }
 
 void FileDialog::set_current_path(const String &p_path) {

scene/gui/file_dialog.h

@@ -113,6 +113,8 @@ private:
 	void update_file_list();
 	void update_filters();
 
+	void _focus_file_text();
+
 	void _tree_multi_selected(Object *p_object, int p_cell, bool p_selected);
 	void _tree_selected();