Make `TabContainer` use `TabBar` internally

3 files changed, 105 insertions, 105 deletions

diff --git a/editor/plugins/script_editor_plugin.cpp b/editor/plugins/script_editor_plugin.cpp
index 30c2b12519..a4a2919034 100644
--- a/editor/plugins/script_editor_plugin.cpp
+++ b/editor/plugins/script_editor_plugin.cpp
@@ -407,8 +407,8 @@ void ScriptEditor::_breaked(bool p_breaked, bool p_can_debug) {
 		return;
 	}
 
-	for (int i = 0; i < tab_container->get_child_count(); i++) {
-		ScriptEditorBase *se = Object::cast_to<ScriptEditorBase>(tab_container->get_child(i));
+	for (int i = 0; i < tab_container->get_tab_count(); i++) {
+		ScriptEditorBase *se = Object::cast_to<ScriptEditorBase>(tab_container->get_tab_control(i));
 		if (!se) {
 			continue;
 		}
@@ -447,8 +447,8 @@ void ScriptEditor::_goto_script_line(REF p_script, int p_line) {
 void ScriptEditor::_set_execution(REF p_script, int p_line) {
 	Ref<Script> script = Object::cast_to<Script>(*p_script);
 	if (script.is_valid() && (script->has_source_code() || script->get_path().is_resource_file())) {
-		for (int i = 0; i < tab_container->get_child_count(); i++) {
-			ScriptEditorBase *se = Object::cast_to<ScriptEditorBase>(tab_container->get_child(i));
+		for (int i = 0; i < tab_container->get_tab_count(); i++) {
+			ScriptEditorBase *se = Object::cast_to<ScriptEditorBase>(tab_container->get_tab_control(i));
 			if (!se) {
 				continue;
 			}
@@ -463,8 +463,8 @@ void ScriptEditor::_set_execution(REF p_script, int p_line) {
 void ScriptEditor::_clear_execution(REF p_script) {
 	Ref<Script> script = Object::cast_to<Script>(*p_script);
 	if (script.is_valid() && (script->has_source_code() || script->get_path().is_resource_file())) {
-		for (int i = 0; i < tab_container->get_child_count(); i++) {
-			ScriptEditorBase *se = Object::cast_to<ScriptEditorBase>(tab_container->get_child(i));
+		for (int i = 0; i < tab_container->get_tab_count(); i++) {
+			ScriptEditorBase *se = Object::cast_to<ScriptEditorBase>(tab_container->get_tab_control(i));
 			if (!se) {
 				continue;
 			}
@@ -480,8 +480,8 @@ void ScriptEditor::_set_breakpoint(REF p_script, int p_line, bool p_enabled) {
 	Ref<Script> script = Object::cast_to<Script>(*p_script);
 	if (script.is_valid() && (script->has_source_code() || script->get_path().is_resource_file())) {
 		// Update if open.
-		for (int i = 0; i < tab_container->get_child_count(); i++) {
-			ScriptEditorBase *se = Object::cast_to<ScriptEditorBase>(tab_container->get_child(i));
+		for (int i = 0; i < tab_container->get_tab_count(); i++) {
+			ScriptEditorBase *se = Object::cast_to<ScriptEditorBase>(tab_container->get_tab_control(i));
 			if (se && se->get_edited_resource()->get_path() == script->get_path()) {
 				se->set_breakpoint(p_line, p_enabled);
 				return;
@@ -509,8 +509,8 @@ void ScriptEditor::_set_breakpoint(REF p_script, int p_line, bool p_enabled) {
 }
 
 void ScriptEditor::_clear_breakpoints() {
-	for (int i = 0; i < tab_container->get_child_count(); i++) {
-		ScriptEditorBase *se = Object::cast_to<ScriptEditorBase>(tab_container->get_child(i));
+	for (int i = 0; i < tab_container->get_tab_count(); i++) {
+		ScriptEditorBase *se = Object::cast_to<ScriptEditorBase>(tab_container->get_tab_control(i));
 		if (se) {
 			se->clear_breakpoints();
 		}
@@ -547,11 +547,11 @@ Array ScriptEditor::_get_cached_breakpoints_for_script(const String &p_path) con
 
 ScriptEditorBase *ScriptEditor::_get_current_editor() const {
 	int selected = tab_container->get_current_tab();
-	if (selected < 0 || selected >= tab_container->get_child_count()) {
+	if (selected < 0 || selected >= tab_container->get_tab_count()) {
 		return nullptr;
 	}
 
-	return Object::cast_to<ScriptEditorBase>(tab_container->get_child(selected));
+	return Object::cast_to<ScriptEditorBase>(tab_container->get_tab_control(selected));
 }
 
 void ScriptEditor::_update_history_arrows() {
@@ -590,7 +590,7 @@ void ScriptEditor::_go_to_tab(int p_idx) {
 		}
 	}
 
-	Control *c = Object::cast_to<Control>(tab_container->get_child(p_idx));
+	Control *c = Object::cast_to<Control>(tab_container->get_tab_control(p_idx));
 	if (!c) {
 		return;
 	}
@@ -750,11 +750,11 @@ void ScriptEditor::_show_error_dialog(String p_path) {
 
 void ScriptEditor::_close_tab(int p_idx, bool p_save, bool p_history_back) {
 	int selected = p_idx;
-	if (selected < 0 || selected >= tab_container->get_child_count()) {
+	if (selected < 0 || selected >= tab_container->get_tab_count()) {
 		return;
 	}
 
-	Node *tselected = tab_container->get_child(selected);
+	Node *tselected = tab_container->get_tab_control(selected);
 
 	ScriptEditorBase *current = Object::cast_to<ScriptEditorBase>(tselected);
 	if (current) {
@@ -805,8 +805,8 @@ void ScriptEditor::_close_tab(int p_idx, bool p_save, bool p_history_back) {
 		_save_editor_state(current);
 	}
 	memdelete(tselected);
-	if (idx >= tab_container->get_child_count()) {
-		idx = tab_container->get_child_count() - 1;
+	if (idx >= tab_container->get_tab_count()) {
+		idx = tab_container->get_tab_count() - 1;
 	}
 	if (idx >= 0) {
 		if (history_pos >= 0) {
@@ -836,9 +836,9 @@ void ScriptEditor::_close_discard_current_tab(const String &p_str) {
 }
 
 void ScriptEditor::_close_docs_tab() {
-	int child_count = tab_container->get_child_count();
+	int child_count = tab_container->get_tab_count();
 	for (int i = child_count - 1; i >= 0; i--) {
-		EditorHelp *se = Object::cast_to<EditorHelp>(tab_container->get_child(i));
+		EditorHelp *se = Object::cast_to<EditorHelp>(tab_container->get_tab_control(i));
 
 		if (se) {
 			_close_tab(i, true, false);
@@ -856,7 +856,7 @@ void ScriptEditor::_copy_script_path() {
 
 void ScriptEditor::_close_other_tabs() {
 	int current_idx = tab_container->get_current_tab();
-	for (int i = tab_container->get_child_count() - 1; i >= 0; i--) {
+	for (int i = tab_container->get_tab_count() - 1; i >= 0; i--) {
 		if (i != current_idx) {
 			script_close_queue.push_back(i);
 		}
@@ -865,7 +865,7 @@ void ScriptEditor::_close_other_tabs() {
 }
 
 void ScriptEditor::_close_all_tabs() {
-	for (int i = tab_container->get_child_count() - 1; i >= 0; i--) {
+	for (int i = tab_container->get_tab_count() - 1; i >= 0; i--) {
 		script_close_queue.push_back(i);
 	}
 	_queue_close_tabs();
@@ -877,7 +877,7 @@ void ScriptEditor::_queue_close_tabs() {
 		script_close_queue.pop_front();
 
 		tab_container->set_current_tab(idx);
-		ScriptEditorBase *se = Object::cast_to<ScriptEditorBase>(tab_container->get_child(idx));
+		ScriptEditorBase *se = Object::cast_to<ScriptEditorBase>(tab_container->get_tab_control(idx));
 		if (se) {
 			// Maybe there are unsaved changes.
 			if (se->is_unsaved()) {
@@ -900,8 +900,8 @@ void ScriptEditor::_ask_close_current_unsaved_tab(ScriptEditorBase *current) {
 void ScriptEditor::_resave_scripts(const String &p_str) {
 	apply_scripts();
 
-	for (int i = 0; i < tab_container->get_child_count(); i++) {
-		ScriptEditorBase *se = Object::cast_to<ScriptEditorBase>(tab_container->get_child(i));
+	for (int i = 0; i < tab_container->get_tab_count(); i++) {
+		ScriptEditorBase *se = Object::cast_to<ScriptEditorBase>(tab_container->get_tab_control(i));
 		if (!se) {
 			continue;
 		}
@@ -941,8 +941,8 @@ void ScriptEditor::_resave_scripts(const String &p_str) {
 }
 
 void ScriptEditor::_reload_scripts() {
-	for (int i = 0; i < tab_container->get_child_count(); i++) {
-		ScriptEditorBase *se = Object::cast_to<ScriptEditorBase>(tab_container->get_child(i));
+	for (int i = 0; i < tab_container->get_tab_count(); i++) {
+		ScriptEditorBase *se = Object::cast_to<ScriptEditorBase>(tab_container->get_tab_control(i));
 		if (!se) {
 			continue;
 		}
@@ -985,8 +985,8 @@ void ScriptEditor::_reload_scripts() {
 }
 
 void ScriptEditor::_res_saved_callback(const Ref<Resource> &p_res) {
-	for (int i = 0; i < tab_container->get_child_count(); i++) {
-		ScriptEditorBase *se = Object::cast_to<ScriptEditorBase>(tab_container->get_child(i));
+	for (int i = 0; i < tab_container->get_tab_count(); i++) {
+		ScriptEditorBase *se = Object::cast_to<ScriptEditorBase>(tab_container->get_tab_control(i));
 		if (!se) {
 			continue;
 		}
@@ -1004,8 +1004,8 @@ void ScriptEditor::_res_saved_callback(const Ref<Resource> &p_res) {
 
 void ScriptEditor::_scene_saved_callback(const String &p_path) {
 	// If scene was saved, mark all built-in scripts from that scene as saved.
-	for (int i = 0; i < tab_container->get_child_count(); i++) {
-		ScriptEditorBase *se = Object::cast_to<ScriptEditorBase>(tab_container->get_child(i));
+	for (int i = 0; i < tab_container->get_tab_count(); i++) {
+		ScriptEditorBase *se = Object::cast_to<ScriptEditorBase>(tab_container->get_tab_control(i));
 		if (!se) {
 			continue;
 		}
@@ -1048,8 +1048,8 @@ bool ScriptEditor::_test_script_times_on_disk(RES p_for_script) {
 	bool need_reload = false;
 	bool use_autoreload = bool(EDITOR_DEF("text_editor/behavior/files/auto_reload_scripts_on_external_change", false));
 
-	for (int i = 0; i < tab_container->get_child_count(); i++) {
-		ScriptEditorBase *se = Object::cast_to<ScriptEditorBase>(tab_container->get_child(i));
+	for (int i = 0; i < tab_container->get_tab_count(); i++) {
+		ScriptEditorBase *se = Object::cast_to<ScriptEditorBase>(tab_container->get_tab_control(i));
 		if (se) {
 			RES edited_res = se->get_edited_resource();
 			if (p_for_script.is_valid() && edited_res.is_valid() && p_for_script != edited_res) {
@@ -1449,7 +1449,7 @@ void ScriptEditor::_menu_option(int p_option) {
 				}
 			} break;
 			case WINDOW_MOVE_DOWN: {
-				if (tab_container->get_current_tab() < tab_container->get_child_count() - 1) {
+				if (tab_container->get_current_tab() < tab_container->get_tab_count() - 1) {
 					tab_container->move_child(current, tab_container->get_current_tab() + 1);
 					tab_container->set_current_tab(tab_container->get_current_tab() + 1);
 					_update_script_names();
@@ -1495,7 +1495,7 @@ void ScriptEditor::_menu_option(int p_option) {
 					}
 				} break;
 				case WINDOW_MOVE_DOWN: {
-					if (tab_container->get_current_tab() < tab_container->get_child_count() - 1) {
+					if (tab_container->get_current_tab() < tab_container->get_tab_count() - 1) {
 						tab_container->move_child(help, tab_container->get_current_tab() + 1);
 						tab_container->set_current_tab(tab_container->get_current_tab() + 1);
 						_update_script_names();
@@ -1545,9 +1545,9 @@ void ScriptEditor::_show_save_theme_as_dialog() {
 }
 
 bool ScriptEditor::_has_docs_tab() const {
-	const int child_count = tab_container->get_child_count();
+	const int child_count = tab_container->get_tab_count();
 	for (int i = 0; i < child_count; i++) {
-		if (Object::cast_to<EditorHelp>(tab_container->get_child(i))) {
+		if (Object::cast_to<EditorHelp>(tab_container->get_tab_control(i))) {
 			return true;
 		}
 	}
@@ -1555,9 +1555,9 @@ bool ScriptEditor::_has_docs_tab() const {
 }
 
 bool ScriptEditor::_has_script_tab() const {
-	const int child_count = tab_container->get_child_count();
+	const int child_count = tab_container->get_tab_count();
 	for (int i = 0; i < child_count; i++) {
-		if (Object::cast_to<ScriptEditorBase>(tab_container->get_child(i))) {
+		if (Object::cast_to<ScriptEditorBase>(tab_container->get_tab_control(i))) {
 			return true;
 		}
 	}
@@ -1581,9 +1581,9 @@ void ScriptEditor::_prepare_file_menu() {
 	menu->set_item_disabled(menu->get_item_index(WINDOW_PREV), history_pos <= 0);
 	menu->set_item_disabled(menu->get_item_index(WINDOW_NEXT), history_pos >= history.size() - 1);
 
-	menu->set_item_disabled(menu->get_item_index(FILE_CLOSE), tab_container->get_child_count() < 1);
-	menu->set_item_disabled(menu->get_item_index(CLOSE_ALL), tab_container->get_child_count() < 1);
-	menu->set_item_disabled(menu->get_item_index(CLOSE_OTHER_TABS), tab_container->get_child_count() <= 1);
+	menu->set_item_disabled(menu->get_item_index(FILE_CLOSE), tab_container->get_tab_count() < 1);
+	menu->set_item_disabled(menu->get_item_index(CLOSE_ALL), tab_container->get_tab_count() < 1);
+	menu->set_item_disabled(menu->get_item_index(CLOSE_OTHER_TABS), tab_container->get_tab_count() <= 1);
 	menu->set_item_disabled(menu->get_item_index(CLOSE_DOCS), !_has_docs_tab());
 
 	menu->set_item_disabled(menu->get_item_index(FILE_RUN), current_is_doc);
@@ -1682,8 +1682,8 @@ bool ScriptEditor::can_take_away_focus() const {
 }
 
 void ScriptEditor::close_builtin_scripts_from_scene(const String &p_scene) {
-	for (int i = 0; i < tab_container->get_child_count(); i++) {
-		ScriptEditorBase *se = Object::cast_to<ScriptEditorBase>(tab_container->get_child(i));
+	for (int i = 0; i < tab_container->get_tab_count(); i++) {
+		ScriptEditorBase *se = Object::cast_to<ScriptEditorBase>(tab_container->get_tab_control(i));
 
 		if (se) {
 			Ref<Script> script = se->get_edited_resource();
@@ -1713,8 +1713,8 @@ void ScriptEditor::notify_script_changed(const Ref<Script> &p_script) {
 
 void ScriptEditor::get_breakpoints(List<String> *p_breakpoints) {
 	Set<String> loaded_scripts;
-	for (int i = 0; i < tab_container->get_child_count(); i++) {
-		ScriptEditorBase *se = Object::cast_to<ScriptEditorBase>(tab_container->get_child(i));
+	for (int i = 0; i < tab_container->get_tab_count(); i++) {
+		ScriptEditorBase *se = Object::cast_to<ScriptEditorBase>(tab_container->get_tab_control(i));
 		if (!se) {
 			continue;
 		}
@@ -1766,7 +1766,7 @@ void ScriptEditor::_members_overview_selected(int p_idx) {
 }
 
 void ScriptEditor::_help_overview_selected(int p_idx) {
-	Node *current = tab_container->get_child(tab_container->get_current_tab());
+	Node *current = tab_container->get_tab_control(tab_container->get_current_tab());
 	EditorHelp *se = Object::cast_to<EditorHelp>(current);
 	if (!se) {
 		return;
@@ -1782,7 +1782,7 @@ void ScriptEditor::_script_selected(int p_idx) {
 }
 
 void ScriptEditor::ensure_select_current() {
-	if (tab_container->get_child_count() && tab_container->get_current_tab() >= 0) {
+	if (tab_container->get_tab_count() && tab_container->get_current_tab() >= 0) {
 		ScriptEditorBase *se = _get_current_editor();
 		if (se) {
 			se->enable_editor();
@@ -1893,12 +1893,12 @@ void ScriptEditor::_update_members_overview() {
 
 void ScriptEditor::_update_help_overview_visibility() {
 	int selected = tab_container->get_current_tab();
-	if (selected < 0 || selected >= tab_container->get_child_count()) {
+	if (selected < 0 || selected >= tab_container->get_tab_count()) {
 		help_overview->set_visible(false);
 		return;
 	}
 
-	Node *current = tab_container->get_child(tab_container->get_current_tab());
+	Node *current = tab_container->get_tab_control(tab_container->get_current_tab());
 	EditorHelp *se = Object::cast_to<EditorHelp>(current);
 	if (!se) {
 		help_overview->set_visible(false);
@@ -1920,11 +1920,11 @@ void ScriptEditor::_update_help_overview() {
 	help_overview->clear();
 
 	int selected = tab_container->get_current_tab();
-	if (selected < 0 || selected >= tab_container->get_child_count()) {
+	if (selected < 0 || selected >= tab_container->get_tab_count()) {
 		return;
 	}
 
-	Node *current = tab_container->get_child(tab_container->get_current_tab());
+	Node *current = tab_container->get_tab_control(tab_container->get_current_tab());
 	EditorHelp *se = Object::cast_to<EditorHelp>(current);
 	if (!se) {
 		return;
@@ -1947,7 +1947,7 @@ void ScriptEditor::_update_script_colors() {
 
 	for (int i = 0; i < script_list->get_item_count(); i++) {
 		int c = script_list->get_item_metadata(i);
-		Node *n = tab_container->get_child(c);
+		Node *n = tab_container->get_tab_control(c);
 		if (!n) {
 			continue;
 		}
@@ -1990,8 +1990,8 @@ void ScriptEditor::_update_script_names() {
 
 	Vector<_ScriptEditorItemData> sedata;
 
-	for (int i = 0; i < tab_container->get_child_count(); i++) {
-		ScriptEditorBase *se = Object::cast_to<ScriptEditorBase>(tab_container->get_child(i));
+	for (int i = 0; i < tab_container->get_tab_count(); i++) {
+		ScriptEditorBase *se = Object::cast_to<ScriptEditorBase>(tab_container->get_tab_control(i));
 		if (se) {
 			Ref<Texture2D> icon = se->get_theme_icon();
 			String path = se->get_edited_resource()->get_path();
@@ -2080,7 +2080,7 @@ void ScriptEditor::_update_script_names() {
 			}
 		}
 
-		EditorHelp *eh = Object::cast_to<EditorHelp>(tab_container->get_child(i));
+		EditorHelp *eh = Object::cast_to<EditorHelp>(tab_container->get_tab_control(i));
 		if (eh) {
 			String name = eh->get_class();
 			Ref<Texture2D> icon = get_theme_icon(SNAME("Help"), SNAME("EditorIcons"));
@@ -2172,8 +2172,8 @@ void ScriptEditor::_update_script_names() {
 }
 
 void ScriptEditor::_update_script_connections() {
-	for (int i = 0; i < tab_container->get_child_count(); i++) {
-		ScriptTextEditor *ste = Object::cast_to<ScriptTextEditor>(tab_container->get_child(i));
+	for (int i = 0; i < tab_container->get_tab_count(); i++) {
+		ScriptTextEditor *ste = Object::cast_to<ScriptTextEditor>(tab_container->get_tab_control(i));
 		if (!ste) {
 			continue;
 		}
@@ -2322,8 +2322,8 @@ bool ScriptEditor::edit(const RES &p_resource, int p_line, int p_col, bool p_gra
 		WARN_PRINT("Couldn't open external text editor, using internal");
 	}
 
-	for (int i = 0; i < tab_container->get_child_count(); i++) {
-		ScriptEditorBase *se = Object::cast_to<ScriptEditorBase>(tab_container->get_child(i));
+	for (int i = 0; i < tab_container->get_tab_count(); i++) {
+		ScriptEditorBase *se = Object::cast_to<ScriptEditorBase>(tab_container->get_tab_control(i));
 		if (!se) {
 			continue;
 		}
@@ -2498,8 +2498,8 @@ void ScriptEditor::save_current_script() {
 void ScriptEditor::save_all_scripts() {
 	Vector<String> scenes_to_save;
 
-	for (int i = 0; i < tab_container->get_child_count(); i++) {
-		ScriptEditorBase *se = Object::cast_to<ScriptEditorBase>(tab_container->get_child(i));
+	for (int i = 0; i < tab_container->get_tab_count(); i++) {
+		ScriptEditorBase *se = Object::cast_to<ScriptEditorBase>(tab_container->get_tab_control(i));
 		if (!se) {
 			continue;
 		}
@@ -2574,8 +2574,8 @@ void ScriptEditor::save_all_scripts() {
 }
 
 void ScriptEditor::apply_scripts() const {
-	for (int i = 0; i < tab_container->get_child_count(); i++) {
-		ScriptEditorBase *se = Object::cast_to<ScriptEditorBase>(tab_container->get_child(i));
+	for (int i = 0; i < tab_container->get_tab_count(); i++) {
+		ScriptEditorBase *se = Object::cast_to<ScriptEditorBase>(tab_container->get_tab_control(i));
 		if (!se) {
 			continue;
 		}
@@ -2624,8 +2624,8 @@ RES ScriptEditor::open_file(const String &p_file) {
 }
 
 void ScriptEditor::_editor_stop() {
-	for (int i = 0; i < tab_container->get_child_count(); i++) {
-		ScriptEditorBase *se = Object::cast_to<ScriptEditorBase>(tab_container->get_child(i));
+	for (int i = 0; i < tab_container->get_tab_count(); i++) {
+		ScriptEditorBase *se = Object::cast_to<ScriptEditorBase>(tab_container->get_tab_control(i));
 		if (!se) {
 			continue;
 		}
@@ -2641,8 +2641,8 @@ void ScriptEditor::_add_callback(Object *p_obj, const String &p_function, const
 
 	EditorNode::get_singleton()->push_item(script.ptr());
 
-	for (int i = 0; i < tab_container->get_child_count(); i++) {
-		ScriptEditorBase *se = Object::cast_to<ScriptEditorBase>(tab_container->get_child(i));
+	for (int i = 0; i < tab_container->get_tab_count(); i++) {
+		ScriptEditorBase *se = Object::cast_to<ScriptEditorBase>(tab_container->get_tab_control(i));
 		if (!se) {
 			continue;
 		}
@@ -2712,8 +2712,8 @@ void ScriptEditor::_editor_settings_changed() {
 		EditorSettings::get_singleton()->load_text_editor_theme();
 	}
 
-	for (int i = 0; i < tab_container->get_child_count(); i++) {
-		ScriptEditorBase *se = Object::cast_to<ScriptEditorBase>(tab_container->get_child(i));
+	for (int i = 0; i < tab_container->get_tab_count(); i++) {
+		ScriptEditorBase *se = Object::cast_to<ScriptEditorBase>(tab_container->get_tab_control(i));
 		if (!se) {
 			continue;
 		}
@@ -2751,8 +2751,8 @@ void ScriptEditor::_files_moved(const String &p_old_file, const String &p_new_fi
 }
 
 void ScriptEditor::_file_removed(const String &p_removed_file) {
-	for (int i = 0; i < tab_container->get_child_count(); i++) {
-		ScriptEditorBase *se = Object::cast_to<ScriptEditorBase>(tab_container->get_child(i));
+	for (int i = 0; i < tab_container->get_tab_count(); i++) {
+		ScriptEditorBase *se = Object::cast_to<ScriptEditorBase>(tab_container->get_tab_control(i));
 		if (!se) {
 			continue;
 		}
@@ -2815,11 +2815,11 @@ void ScriptEditor::_split_dragged(float) {
 }
 
 Variant ScriptEditor::get_drag_data_fw(const Point2 &p_point, Control *p_from) {
-	if (tab_container->get_child_count() == 0) {
+	if (tab_container->get_tab_count() == 0) {
 		return Variant();
 	}
 
-	Node *cur_node = tab_container->get_child(tab_container->get_current_tab());
+	Node *cur_node = tab_container->get_tab_control(tab_container->get_current_tab());
 
 	HBoxContainer *drag_preview = memnew(HBoxContainer);
 	String preview_name = "";
@@ -2975,7 +2975,7 @@ void ScriptEditor::drop_data_fw(const Point2 &p_point, const Variant &p_data, Co
 		if (script_list->get_item_count() > 0) {
 			new_index = script_list->get_item_metadata(script_list->get_item_at_position(p_point));
 		}
-		int num_tabs_before = tab_container->get_child_count();
+		int num_tabs_before = tab_container->get_tab_count();
 		for (int i = 0; i < files.size(); i++) {
 			String file = files[i];
 			if (file.is_empty() || !FileAccess::exists(file)) {
@@ -2988,11 +2988,11 @@ void ScriptEditor::drop_data_fw(const Point2 &p_point, const Variant &p_data, Co
 
 			RES res = open_file(file);
 			if (res.is_valid()) {
-				if (tab_container->get_child_count() > num_tabs_before) {
-					tab_container->move_child(tab_container->get_child(tab_container->get_child_count() - 1), new_index);
-					num_tabs_before = tab_container->get_child_count();
+				if (tab_container->get_tab_count() > num_tabs_before) {
+					tab_container->move_child(tab_container->get_tab_control(tab_container->get_tab_count() - 1), new_index);
+					num_tabs_before = tab_container->get_tab_count();
 				} else { /* Maybe script was already open */
-					tab_container->move_child(tab_container->get_child(tab_container->get_current_tab()), new_index);
+					tab_container->move_child(tab_container->get_tab_control(tab_container->get_current_tab()), new_index);
 				}
 			}
 		}
@@ -3081,11 +3081,11 @@ void ScriptEditor::_make_script_list_context_menu() {
 	context_menu->clear();
 
 	int selected = tab_container->get_current_tab();
-	if (selected < 0 || selected >= tab_container->get_child_count()) {
+	if (selected < 0 || selected >= tab_container->get_tab_count()) {
 		return;
 	}
 
-	ScriptEditorBase *se = Object::cast_to<ScriptEditorBase>(tab_container->get_child(selected));
+	ScriptEditorBase *se = Object::cast_to<ScriptEditorBase>(tab_container->get_tab_control(selected));
 	if (se) {
 		context_menu->add_shortcut(ED_GET_SHORTCUT("script_editor/save"), FILE_SAVE);
 		context_menu->add_shortcut(ED_GET_SHORTCUT("script_editor/save_as"), FILE_SAVE_AS);
@@ -3113,11 +3113,11 @@ void ScriptEditor::_make_script_list_context_menu() {
 	context_menu->add_shortcut(ED_GET_SHORTCUT("script_editor/window_sort"), WINDOW_SORT);
 	context_menu->add_shortcut(ED_GET_SHORTCUT("script_editor/toggle_scripts_panel"), TOGGLE_SCRIPTS_PANEL);
 
-	context_menu->set_item_disabled(context_menu->get_item_index(CLOSE_ALL), tab_container->get_child_count() <= 0);
-	context_menu->set_item_disabled(context_menu->get_item_index(CLOSE_OTHER_TABS), tab_container->get_child_count() <= 1);
+	context_menu->set_item_disabled(context_menu->get_item_index(CLOSE_ALL), tab_container->get_tab_count() <= 0);
+	context_menu->set_item_disabled(context_menu->get_item_index(CLOSE_OTHER_TABS), tab_container->get_tab_count() <= 1);
 	context_menu->set_item_disabled(context_menu->get_item_index(WINDOW_MOVE_UP), tab_container->get_current_tab() <= 0);
-	context_menu->set_item_disabled(context_menu->get_item_index(WINDOW_MOVE_DOWN), tab_container->get_current_tab() >= tab_container->get_child_count() - 1);
-	context_menu->set_item_disabled(context_menu->get_item_index(WINDOW_SORT), tab_container->get_child_count() <= 1);
+	context_menu->set_item_disabled(context_menu->get_item_index(WINDOW_MOVE_DOWN), tab_container->get_current_tab() >= tab_container->get_tab_count() - 1);
+	context_menu->set_item_disabled(context_menu->get_item_index(WINDOW_SORT), tab_container->get_tab_count() <= 1);
 
 	context_menu->set_position(get_screen_position() + get_local_mouse_position());
 	context_menu->reset_size();
@@ -3181,7 +3181,7 @@ void ScriptEditor::set_window_layout(Ref<ConfigFile> p_layout) {
 		}
 
 		if (!script_info.is_empty()) {
-			ScriptEditorBase *se = Object::cast_to<ScriptEditorBase>(tab_container->get_child(tab_container->get_tab_count() - 1));
+			ScriptEditorBase *se = Object::cast_to<ScriptEditorBase>(tab_container->get_tab_control(tab_container->get_tab_count() - 1));
 			if (se) {
 				se->set_edit_state(script_info["state"]);
 			}
@@ -3196,8 +3196,8 @@ void ScriptEditor::set_window_layout(Ref<ConfigFile> p_layout) {
 		_help_class_open(path);
 	}
 
-	for (int i = 0; i < tab_container->get_child_count(); i++) {
-		tab_container->get_child(i)->set_meta("__editor_pass", Variant());
+	for (int i = 0; i < tab_container->get_tab_count(); i++) {
+		tab_container->get_tab_control(i)->set_meta("__editor_pass", Variant());
 	}
 
 	if (p_layout->has_section_key("ScriptEditor", "script_split_offset")) {
@@ -3237,8 +3237,8 @@ void ScriptEditor::get_window_layout(Ref<ConfigFile> p_layout) {
 	Array scripts;
 	Array helps;
 
-	for (int i = 0; i < tab_container->get_child_count(); i++) {
-		ScriptEditorBase *se = Object::cast_to<ScriptEditorBase>(tab_container->get_child(i));
+	for (int i = 0; i < tab_container->get_tab_count(); i++) {
+		ScriptEditorBase *se = Object::cast_to<ScriptEditorBase>(tab_container->get_tab_control(i));
 		if (se) {
 			String path = se->get_edited_resource()->get_path();
 			if (!path.is_resource_file()) {
@@ -3249,7 +3249,7 @@ void ScriptEditor::get_window_layout(Ref<ConfigFile> p_layout) {
 			scripts.push_back(path);
 		}
 
-		EditorHelp *eh = Object::cast_to<EditorHelp>(tab_container->get_child(i));
+		EditorHelp *eh = Object::cast_to<EditorHelp>(tab_container->get_tab_control(i));
 
 		if (eh) {
 			helps.push_back(eh->get_class());
@@ -3270,8 +3270,8 @@ void ScriptEditor::_help_class_open(const String &p_class) {
 		return;
 	}
 
-	for (int i = 0; i < tab_container->get_child_count(); i++) {
-		EditorHelp *eh = Object::cast_to<EditorHelp>(tab_container->get_child(i));
+	for (int i = 0; i < tab_container->get_tab_count(); i++) {
+		EditorHelp *eh = Object::cast_to<EditorHelp>(tab_container->get_tab_control(i));
 
 		if (eh && eh->get_class() == p_class) {
 			_go_to_tab(i);
@@ -3296,8 +3296,8 @@ void ScriptEditor::_help_class_open(const String &p_class) {
 void ScriptEditor::_help_class_goto(const String &p_desc) {
 	String cname = p_desc.get_slice(":", 1);
 
-	for (int i = 0; i < tab_container->get_child_count(); i++) {
-		EditorHelp *eh = Object::cast_to<EditorHelp>(tab_container->get_child(i));
+	for (int i = 0; i < tab_container->get_tab_count(); i++) {
+		EditorHelp *eh = Object::cast_to<EditorHelp>(tab_container->get_tab_control(i));
 
 		if (eh && eh->get_class() == cname) {
 			_go_to_tab(i);
@@ -3323,8 +3323,8 @@ void ScriptEditor::_help_class_goto(const String &p_desc) {
 void ScriptEditor::update_doc(const String &p_name) {
 	ERR_FAIL_COND(!EditorHelp::get_doc_data()->has_doc(p_name));
 
-	for (int i = 0; i < tab_container->get_child_count(); i++) {
-		EditorHelp *eh = Object::cast_to<EditorHelp>(tab_container->get_child(i));
+	for (int i = 0; i < tab_container->get_tab_count(); i++) {
+		EditorHelp *eh = Object::cast_to<EditorHelp>(tab_container->get_tab_control(i));
 		if (eh && eh->get_class() == p_name) {
 			eh->update_doc();
 			return;
@@ -3333,10 +3333,10 @@ void ScriptEditor::update_doc(const String &p_name) {
 }
 
 void ScriptEditor::_update_selected_editor_menu() {
-	for (int i = 0; i < tab_container->get_child_count(); i++) {
+	for (int i = 0; i < tab_container->get_tab_count(); i++) {
 		bool current = tab_container->get_current_tab() == i;
 
-		ScriptEditorBase *se = Object::cast_to<ScriptEditorBase>(tab_container->get_child(i));
+		ScriptEditorBase *se = Object::cast_to<ScriptEditorBase>(tab_container->get_tab_control(i));
 		if (se && se->get_edit_menu()) {
 			if (current) {
 				se->get_edit_menu()->show();
@@ -3356,7 +3356,7 @@ void ScriptEditor::_update_selected_editor_menu() {
 		script_search_menu->get_popup()->add_shortcut(ED_SHORTCUT("script_editor/find_in_files", TTR("Find in Files"), KeyModifierMask::CMD | KeyModifierMask::SHIFT | Key::F), SEARCH_IN_FILES);
 		script_search_menu->show();
 	} else {
-		if (tab_container->get_child_count() == 0) {
+		if (tab_container->get_tab_count() == 0) {
 			script_search_menu->get_popup()->add_shortcut(ED_SHORTCUT("script_editor/find_in_files", TTR("Find in Files"), KeyModifierMask::CMD | KeyModifierMask::SHIFT | Key::F), SEARCH_IN_FILES);
 			script_search_menu->show();
 		} else {
@@ -3416,8 +3416,8 @@ void ScriptEditor::_history_back() {
 Vector<Ref<Script>> ScriptEditor::get_open_scripts() const {
 	Vector<Ref<Script>> out_scripts = Vector<Ref<Script>>();
 
-	for (int i = 0; i < tab_container->get_child_count(); i++) {
-		ScriptEditorBase *se = Object::cast_to<ScriptEditorBase>(tab_container->get_child(i));
+	for (int i = 0; i < tab_container->get_tab_count(); i++) {
+		ScriptEditorBase *se = Object::cast_to<ScriptEditorBase>(tab_container->get_tab_control(i));
 		if (!se) {
 			continue;
 		}
@@ -3433,8 +3433,8 @@ Vector<Ref<Script>> ScriptEditor::get_open_scripts() const {
 
 Array ScriptEditor::_get_open_script_editors() const {
 	Array script_editors;
-	for (int i = 0; i < tab_container->get_child_count(); i++) {
-		ScriptEditorBase *se = Object::cast_to<ScriptEditorBase>(tab_container->get_child(i));
+	for (int i = 0; i < tab_container->get_tab_count(); i++) {
+		ScriptEditorBase *se = Object::cast_to<ScriptEditorBase>(tab_container->get_tab_control(i));
 		if (!se) {
 			continue;
 		}
diff --git a/editor/plugins/theme_editor_plugin.cpp b/editor/plugins/theme_editor_plugin.cpp
index a03f036b72..74e3372730 100644
--- a/editor/plugins/theme_editor_plugin.cpp
+++ b/editor/plugins/theme_editor_plugin.cpp
@@ -1887,7 +1887,7 @@ ThemeItemEditorDialog::ThemeItemEditorDialog(ThemeTypeEditor *p_theme_type_edito
 	theme_type_editor = p_theme_type_editor;
 
 	tc = memnew(TabContainer);
-	tc->set_tab_alignment(TabContainer::ALIGNMENT_LEFT);
+	tc->set_tab_alignment(TabBar::ALIGNMENT_LEFT);
 	add_child(tc);
 
 	// Edit Items tab.
diff --git a/editor/plugins/version_control_editor_plugin.cpp b/editor/plugins/version_control_editor_plugin.cpp
index b1d5b348c4..443d5975cd 100644
--- a/editor/plugins/version_control_editor_plugin.cpp
+++ b/editor/plugins/version_control_editor_plugin.cpp
@@ -329,7 +329,7 @@ void VersionControlEditorPlugin::register_editor() {
 	if (!EditorVCSInterface::get_singleton()) {
 		EditorNode::get_singleton()->add_control_to_dock(EditorNode::DOCK_SLOT_RIGHT_UL, version_commit_dock);
 		TabContainer *dock_vbc = (TabContainer *)version_commit_dock->get_parent_control();
-		dock_vbc->set_tab_title(version_commit_dock->get_index(), TTR("Commit"));
+		dock_vbc->set_tab_title(dock_vbc->get_tab_idx_from_control(version_commit_dock), TTR("Commit"));
 
 		Button *vc = EditorNode::get_singleton()->add_bottom_panel_item(TTR("Version Control"), version_control_dock);
 		set_version_control_tool_button(vc);