Add support for internal nodes

18 files changed, 50 insertions, 56 deletions

diff --git a/scene/gui/box_container.cpp b/scene/gui/box_container.cpp
index a2f1d2b15a..cf2df4e1a2 100644
--- a/scene/gui/box_container.cpp
+++ b/scene/gui/box_container.cpp
@@ -351,11 +351,11 @@ MarginContainer *VBoxContainer::add_margin_child(const String &p_label, Control
 	Label *l = memnew(Label);
 	l->set_theme_type_variation("HeaderSmall");
 	l->set_text(p_label);
-	add_child(l);
+	add_child(l, false, INTERNAL_MODE_FRONT);
 	MarginContainer *mc = memnew(MarginContainer);
 	mc->add_theme_constant_override("margin_left", 0);
 	mc->add_child(p_control);
-	add_child(mc);
+	add_child(mc, false, INTERNAL_MODE_FRONT);
 	if (p_expand) {
 		mc->set_v_size_flags(SIZE_EXPAND_FILL);
 	}
diff --git a/scene/gui/color_picker.cpp b/scene/gui/color_picker.cpp
index 0dddb2b09a..1afb0b8e9d 100644
--- a/scene/gui/color_picker.cpp
+++ b/scene/gui/color_picker.cpp
@@ -1139,7 +1139,7 @@ void ColorPicker::_bind_methods() {
 ColorPicker::ColorPicker() :
 		BoxContainer(true) {
 	HBoxContainer *hb_edit = memnew(HBoxContainer);
-	add_child(hb_edit);
+	add_child(hb_edit, false, INTERNAL_MODE_FRONT);
 	hb_edit->set_v_size_flags(SIZE_EXPAND_FILL);
 
 	hb_edit->add_child(uv_edit);
@@ -1151,7 +1151,7 @@ ColorPicker::ColorPicker() :
 	uv_edit->connect("draw", callable_mp(this, &ColorPicker::_hsv_draw), make_binds(0, uv_edit));
 
 	HBoxContainer *hb_smpl = memnew(HBoxContainer);
-	add_child(hb_smpl);
+	add_child(hb_smpl, false, INTERNAL_MODE_FRONT);
 
 	hb_smpl->add_child(sample);
 	sample->set_h_size_flags(SIZE_EXPAND_FILL);
@@ -1165,12 +1165,12 @@ ColorPicker::ColorPicker() :
 	btn_pick->connect("pressed", callable_mp(this, &ColorPicker::_screen_pick_pressed));
 
 	VBoxContainer *vbl = memnew(VBoxContainer);
-	add_child(vbl);
+	add_child(vbl, false, INTERNAL_MODE_FRONT);
 
-	add_child(memnew(HSeparator));
+	add_child(memnew(HSeparator), false, INTERNAL_MODE_FRONT);
 
 	VBoxContainer *vbr = memnew(VBoxContainer);
-	add_child(vbr);
+	add_child(vbr, false, INTERNAL_MODE_FRONT);
 	vbr->set_h_size_flags(SIZE_EXPAND_FILL);
 
 	for (int i = 0; i < 4; i++) {
@@ -1273,11 +1273,11 @@ ColorPicker::ColorPicker() :
 
 	set_pick_color(Color(1, 1, 1));
 
-	add_child(preset_separator);
+	add_child(preset_separator, false, INTERNAL_MODE_FRONT);
 
 	preset_container->set_h_size_flags(SIZE_EXPAND_FILL);
 	preset_container->set_columns(preset_column_count);
-	add_child(preset_container);
+	add_child(preset_container, false, INTERNAL_MODE_FRONT);
 
 	btn_add_preset->set_icon_align(Button::ALIGN_CENTER);
 	btn_add_preset->set_tooltip(RTR("Add current color as a preset."));
@@ -1405,7 +1405,7 @@ void ColorPickerButton::_update_picker() {
 		picker = memnew(ColorPicker);
 		picker->set_anchors_and_offsets_preset(PRESET_WIDE);
 		popup->add_child(picker);
-		add_child(popup);
+		add_child(popup, false, INTERNAL_MODE_FRONT);
 		picker->connect("color_changed", callable_mp(this, &ColorPickerButton::_color_changed));
 		popup->connect("about_to_popup", callable_mp(this, &ColorPickerButton::_about_to_popup));
 		popup->connect("popup_hide", callable_mp(this, &ColorPickerButton::_modal_closed));
diff --git a/scene/gui/dialogs.cpp b/scene/gui/dialogs.cpp
index da858e8e83..5d98aaa698 100644
--- a/scene/gui/dialogs.cpp
+++ b/scene/gui/dialogs.cpp
@@ -319,7 +319,7 @@ AcceptDialog::AcceptDialog() {
 	set_clamp_to_embedder(true);
 
 	bg = memnew(Panel);
-	add_child(bg);
+	add_child(bg, false, INTERNAL_MODE_FRONT);
 
 	hbc = memnew(HBoxContainer);
 
@@ -331,9 +331,9 @@ AcceptDialog::AcceptDialog() {
 	label->set_anchor(SIDE_BOTTOM, Control::ANCHOR_END);
 	label->set_begin(Point2(margin, margin));
 	label->set_end(Point2(-margin, -button_margin - 10));
-	add_child(label);
+	add_child(label, false, INTERNAL_MODE_FRONT);
 
-	add_child(hbc);
+	add_child(hbc, false, INTERNAL_MODE_FRONT);
 
 	hbc->add_spacer();
 	ok = memnew(Button);
diff --git a/scene/gui/file_dialog.cpp b/scene/gui/file_dialog.cpp
index 2512b24623..973b72973d 100644
--- a/scene/gui/file_dialog.cpp
+++ b/scene/gui/file_dialog.cpp
@@ -924,7 +924,7 @@ FileDialog::FileDialog() {
 	show_hidden_files = default_show_hidden_files;
 
 	vbox = memnew(VBoxContainer);
-	add_child(vbox);
+	add_child(vbox, false, INTERNAL_MODE_FRONT);
 	vbox->connect("theme_changed", callable_mp(this, &FileDialog::_theme_changed));
 
 	mode = FILE_MODE_SAVE_FILE;
@@ -1023,8 +1023,7 @@ FileDialog::FileDialog() {
 	filter->connect("item_selected", callable_mp(this, &FileDialog::_filter_selected));
 
 	confirm_save = memnew(ConfirmationDialog);
-	//	confirm_save->set_as_top_level(true);
-	add_child(confirm_save);
+	add_child(confirm_save, false, INTERNAL_MODE_FRONT);
 
 	confirm_save->connect("confirmed", callable_mp(this, &FileDialog::_save_confirm_pressed));
 
@@ -1036,16 +1035,16 @@ FileDialog::FileDialog() {
 	makedirname = memnew(LineEdit);
 	makedirname->set_structured_text_bidi_override(Control::STRUCTURED_TEXT_FILE);
 	makevb->add_margin_child(TTRC("Name:"), makedirname);
-	add_child(makedialog);
+	add_child(makedialog, false, INTERNAL_MODE_FRONT);
 	makedialog->register_text_enter(makedirname);
 	makedialog->connect("confirmed", callable_mp(this, &FileDialog::_make_dir_confirm));
 	mkdirerr = memnew(AcceptDialog);
 	mkdirerr->set_text(TTRC("Could not create folder."));
-	add_child(mkdirerr);
+	add_child(mkdirerr, false, INTERNAL_MODE_FRONT);
 
 	exterr = memnew(AcceptDialog);
 	exterr->set_text(TTRC("Must use a valid extension."));
-	add_child(exterr);
+	add_child(exterr, false, INTERNAL_MODE_FRONT);
 
 	update_filters();
 	update_dir();
diff --git a/scene/gui/gradient_edit.cpp b/scene/gui/gradient_edit.cpp
index bbab3008e2..56b8a936e1 100644
--- a/scene/gui/gradient_edit.cpp
+++ b/scene/gui/gradient_edit.cpp
@@ -48,7 +48,7 @@ GradientEdit::GradientEdit() {
 	picker = memnew(ColorPicker);
 	popup->add_child(picker);
 
-	add_child(popup);
+	add_child(popup, false, INTERNAL_MODE_FRONT);
 }
 
 int GradientEdit::_get_point_from_pos(int x) {
diff --git a/scene/gui/graph_edit.cpp b/scene/gui/graph_edit.cpp
index 0281bc7efb..cabae9feb2 100644
--- a/scene/gui/graph_edit.cpp
+++ b/scene/gui/graph_edit.cpp
@@ -366,7 +366,6 @@ void GraphEdit::_graph_node_raised(Node *p_gn) {
 	}
 
 	move_child(connections_layer, first_not_comment);
-	top_layer->raise();
 	emit_signal(SNAME("node_selected"), p_gn);
 }
 
@@ -2246,14 +2245,14 @@ GraphEdit::GraphEdit() {
 	zoom_max = (1 * Math::pow(zoom_step, 4));
 
 	top_layer = memnew(GraphEditFilter(this));
-	add_child(top_layer);
+	add_child(top_layer, false, INTERNAL_MODE_BACK);
 	top_layer->set_mouse_filter(MOUSE_FILTER_PASS);
 	top_layer->set_anchors_and_offsets_preset(Control::PRESET_WIDE);
 	top_layer->connect("draw", callable_mp(this, &GraphEdit::_top_layer_draw));
 	top_layer->connect("gui_input", callable_mp(this, &GraphEdit::_top_layer_input));
 
 	connections_layer = memnew(Control);
-	add_child(connections_layer);
+	add_child(connections_layer, false, INTERNAL_MODE_FRONT);
 	connections_layer->connect("draw", callable_mp(this, &GraphEdit::_connections_layer_draw));
 	connections_layer->set_name("CLAYER");
 	connections_layer->set_disable_visibility_clip(true); // so it can draw freely and be offset
diff --git a/scene/gui/item_list.cpp b/scene/gui/item_list.cpp
index 8297de9f30..d10ad90c1f 100644
--- a/scene/gui/item_list.cpp
+++ b/scene/gui/item_list.cpp
@@ -1656,7 +1656,7 @@ void ItemList::_bind_methods() {
 
 ItemList::ItemList() {
 	scroll_bar = memnew(VScrollBar);
-	add_child(scroll_bar);
+	add_child(scroll_bar, false, INTERNAL_MODE_FRONT);
 
 	scroll_bar->connect("value_changed", callable_mp(this, &ItemList::_scroll_changed));
 
diff --git a/scene/gui/line_edit.cpp b/scene/gui/line_edit.cpp
index d524e78caa..3605842224 100644
--- a/scene/gui/line_edit.cpp
+++ b/scene/gui/line_edit.cpp
@@ -2220,7 +2220,7 @@ void LineEdit::_bind_methods() {
 void LineEdit::_ensure_menu() {
 	if (!menu) {
 		menu = memnew(PopupMenu);
-		add_child(menu);
+		add_child(menu, false, INTERNAL_MODE_FRONT);
 
 		menu_dir = memnew(PopupMenu);
 		menu_dir->set_name("DirMenu");
@@ -2305,7 +2305,7 @@ LineEdit::LineEdit() {
 	set_mouse_filter(MOUSE_FILTER_STOP);
 
 	caret_blink_timer = memnew(Timer);
-	add_child(caret_blink_timer);
+	add_child(caret_blink_timer, false, INTERNAL_MODE_FRONT);
 	caret_blink_timer->set_wait_time(0.65);
 	caret_blink_timer->connect("timeout", callable_mp(this, &LineEdit::_toggle_draw_caret));
 	set_caret_blink_enabled(false);
diff --git a/scene/gui/menu_button.cpp b/scene/gui/menu_button.cpp
index e312aaed57..737ba84617 100644
--- a/scene/gui/menu_button.cpp
+++ b/scene/gui/menu_button.cpp
@@ -172,7 +172,7 @@ MenuButton::MenuButton() {
 
 	popup = memnew(PopupMenu);
 	popup->hide();
-	add_child(popup);
+	add_child(popup, false, INTERNAL_MODE_FRONT);
 	popup->connect("about_to_popup", callable_mp(this, &MenuButton::_popup_visibility_changed), varray(true));
 	popup->connect("popup_hide", callable_mp(this, &MenuButton::_popup_visibility_changed), varray(false));
 }
diff --git a/scene/gui/option_button.cpp b/scene/gui/option_button.cpp
index cd55f258b3..d16e96dbec 100644
--- a/scene/gui/option_button.cpp
+++ b/scene/gui/option_button.cpp
@@ -351,7 +351,7 @@ OptionButton::OptionButton() {
 
 	popup = memnew(PopupMenu);
 	popup->hide();
-	add_child(popup);
+	add_child(popup, false, INTERNAL_MODE_FRONT);
 	popup->connect("index_pressed", callable_mp(this, &OptionButton::_selected));
 	popup->connect("id_focused", callable_mp(this, &OptionButton::_focused));
 	popup->connect("popup_hide", callable_mp((BaseButton *)this, &BaseButton::set_pressed), varray(false));
diff --git a/scene/gui/popup.cpp b/scene/gui/popup.cpp
index f7e7e1cd60..e9414598a2 100644
--- a/scene/gui/popup.cpp
+++ b/scene/gui/popup.cpp
@@ -255,5 +255,5 @@ void PopupPanel::_notification(int p_what) {
 
 PopupPanel::PopupPanel() {
 	panel = memnew(Panel);
-	add_child(panel);
+	add_child(panel, false, INTERNAL_MODE_FRONT);
 }
diff --git a/scene/gui/popup_menu.cpp b/scene/gui/popup_menu.cpp
index f75d6755a8..efbdc50337 100644
--- a/scene/gui/popup_menu.cpp
+++ b/scene/gui/popup_menu.cpp
@@ -1689,7 +1689,7 @@ PopupMenu::PopupMenu() {
 	// Margin Container
 	margin_container = memnew(MarginContainer);
 	margin_container->set_anchors_and_offsets_preset(Control::PRESET_WIDE);
-	add_child(margin_container);
+	add_child(margin_container, false, INTERNAL_MODE_FRONT);
 	margin_container->connect("draw", callable_mp(this, &PopupMenu::_draw_background));
 
 	// Scroll Container
@@ -1703,7 +1703,7 @@ PopupMenu::PopupMenu() {
 	control->set_anchors_and_offsets_preset(Control::PRESET_WIDE);
 	control->set_h_size_flags(Control::SIZE_EXPAND_FILL);
 	control->set_v_size_flags(Control::SIZE_EXPAND_FILL);
-	scroll_container->add_child(control);
+	scroll_container->add_child(control, false, INTERNAL_MODE_FRONT);
 	control->connect("draw", callable_mp(this, &PopupMenu::_draw_items));
 
 	connect("window_input", callable_mp(this, &PopupMenu::gui_input));
@@ -1712,13 +1712,13 @@ PopupMenu::PopupMenu() {
 	submenu_timer->set_wait_time(0.3);
 	submenu_timer->set_one_shot(true);
 	submenu_timer->connect("timeout", callable_mp(this, &PopupMenu::_submenu_timeout));
-	add_child(submenu_timer);
+	add_child(submenu_timer, false, INTERNAL_MODE_FRONT);
 
 	minimum_lifetime_timer = memnew(Timer);
 	minimum_lifetime_timer->set_wait_time(0.3);
 	minimum_lifetime_timer->set_one_shot(true);
 	minimum_lifetime_timer->connect("timeout", callable_mp(this, &PopupMenu::_minimum_lifetime_timeout));
-	add_child(minimum_lifetime_timer);
+	add_child(minimum_lifetime_timer, false, INTERNAL_MODE_FRONT);
 }
 
 PopupMenu::~PopupMenu() {
diff --git a/scene/gui/rich_text_label.cpp b/scene/gui/rich_text_label.cpp
index b7519af4aa..fbc67d8a24 100644
--- a/scene/gui/rich_text_label.cpp
+++ b/scene/gui/rich_text_label.cpp
@@ -4361,7 +4361,7 @@ RichTextLabel::RichTextLabel() {
 	current_frame = main;
 
 	vscroll = memnew(VScrollBar);
-	add_child(vscroll);
+	add_child(vscroll, false, INTERNAL_MODE_FRONT);
 	vscroll->set_drag_node(String(".."));
 	vscroll->set_step(1);
 	vscroll->set_anchor_and_offset(SIDE_TOP, ANCHOR_BEGIN, 0);
diff --git a/scene/gui/scroll_container.cpp b/scene/gui/scroll_container.cpp
index b5daa8b3f1..0c051f61e2 100644
--- a/scene/gui/scroll_container.cpp
+++ b/scene/gui/scroll_container.cpp
@@ -228,9 +228,6 @@ void ScrollContainer::_update_scrollbar_position() {
 	v_scroll->set_anchor_and_offset(SIDE_TOP, ANCHOR_BEGIN, 0);
 	v_scroll->set_anchor_and_offset(SIDE_BOTTOM, ANCHOR_END, 0);
 
-	h_scroll->raise();
-	v_scroll->raise();
-
 	_updating_scrollbars = false;
 }
 
@@ -618,12 +615,12 @@ void ScrollContainer::_bind_methods() {
 ScrollContainer::ScrollContainer() {
 	h_scroll = memnew(HScrollBar);
 	h_scroll->set_name("_h_scroll");
-	add_child(h_scroll);
+	add_child(h_scroll, false, INTERNAL_MODE_BACK);
 	h_scroll->connect("value_changed", callable_mp(this, &ScrollContainer::_scroll_moved));
 
 	v_scroll = memnew(VScrollBar);
 	v_scroll->set_name("_v_scroll");
-	add_child(v_scroll);
+	add_child(v_scroll, false, INTERNAL_MODE_BACK);
 	v_scroll->connect("value_changed", callable_mp(this, &ScrollContainer::_scroll_moved));
 
 	deadzone = GLOBAL_GET("gui/common/default_scroll_deadzone");
diff --git a/scene/gui/spin_box.cpp b/scene/gui/spin_box.cpp
index 65a3eb3adf..1074d0d8a0 100644
--- a/scene/gui/spin_box.cpp
+++ b/scene/gui/spin_box.cpp
@@ -278,7 +278,7 @@ void SpinBox::_bind_methods() {
 
 SpinBox::SpinBox() {
 	line_edit = memnew(LineEdit);
-	add_child(line_edit);
+	add_child(line_edit, false, INTERNAL_MODE_FRONT);
 
 	line_edit->set_anchors_and_offsets_preset(Control::PRESET_WIDE);
 	line_edit->set_mouse_filter(MOUSE_FILTER_PASS);
@@ -291,5 +291,5 @@ SpinBox::SpinBox() {
 
 	range_click_timer = memnew(Timer);
 	range_click_timer->connect("timeout", callable_mp(this, &SpinBox::_range_click_timeout));
-	add_child(range_click_timer);
+	add_child(range_click_timer, false, INTERNAL_MODE_FRONT);
 }
diff --git a/scene/gui/tab_container.cpp b/scene/gui/tab_container.cpp
index 5884d2a854..481e211eb3 100644
--- a/scene/gui/tab_container.cpp
+++ b/scene/gui/tab_container.cpp
@@ -905,7 +905,7 @@ void TabContainer::drop_data(const Point2 &p_point, const Variant &p_data) {
 			if (from_tabc && from_tabc->get_tabs_rearrange_group() == get_tabs_rearrange_group()) {
 				Control *moving_tabc = from_tabc->get_tab_control(tab_from_id);
 				from_tabc->remove_child(moving_tabc);
-				add_child(moving_tabc);
+				add_child(moving_tabc, false, INTERNAL_MODE_FRONT);
 				if (hover_now < 0) {
 					hover_now = get_tab_count() - 1;
 				}
diff --git a/scene/gui/text_edit.cpp b/scene/gui/text_edit.cpp
index a731f80741..7e64c13b37 100644
--- a/scene/gui/text_edit.cpp
+++ b/scene/gui/text_edit.cpp
@@ -5004,7 +5004,7 @@ void TextEdit::_paste_internal() {
 void TextEdit::_generate_context_menu() {
 	if (!menu) {
 		menu = memnew(PopupMenu);
-		add_child(menu);
+		add_child(menu, false, INTERNAL_MODE_FRONT);
 
 		menu_dir = memnew(PopupMenu);
 		menu_dir->set_name("DirMenu");
@@ -5012,7 +5012,7 @@ void TextEdit::_generate_context_menu() {
 		menu_dir->add_radio_check_item(RTR("Auto-detect direction"), MENU_DIR_AUTO);
 		menu_dir->add_radio_check_item(RTR("Left-to-right"), MENU_DIR_LTR);
 		menu_dir->add_radio_check_item(RTR("Right-to-left"), MENU_DIR_RTL);
-		menu->add_child(menu_dir);
+		menu->add_child(menu_dir, false, INTERNAL_MODE_FRONT);
 
 		menu_ctl = memnew(PopupMenu);
 		menu_ctl->set_name("CTLMenu");
@@ -5034,7 +5034,7 @@ void TextEdit::_generate_context_menu() {
 		menu_ctl->add_item(RTR("Zero width non-joiner (ZWNJ)"), MENU_INSERT_ZWNJ);
 		menu_ctl->add_item(RTR("Word joiner (WJ)"), MENU_INSERT_WJ);
 		menu_ctl->add_item(RTR("Soft hyphen (SHY)"), MENU_INSERT_SHY);
-		menu->add_child(menu_ctl);
+		menu->add_child(menu_ctl, false, INTERNAL_MODE_FRONT);
 
 		menu->connect("id_pressed", callable_mp(this, &TextEdit::menu_option));
 		menu_dir->connect("id_pressed", callable_mp(this, &TextEdit::menu_option));
@@ -5948,8 +5948,8 @@ TextEdit::TextEdit() {
 	h_scroll = memnew(HScrollBar);
 	v_scroll = memnew(VScrollBar);
 
-	add_child(h_scroll);
-	add_child(v_scroll);
+	add_child(h_scroll, false, INTERNAL_MODE_FRONT);
+	add_child(v_scroll, false, INTERNAL_MODE_FRONT);
 
 	h_scroll->connect("value_changed", callable_mp(this, &TextEdit::_scroll_moved));
 	v_scroll->connect("value_changed", callable_mp(this, &TextEdit::_scroll_moved));
@@ -5958,19 +5958,19 @@ TextEdit::TextEdit() {
 
 	/* Caret. */
 	caret_blink_timer = memnew(Timer);
-	add_child(caret_blink_timer);
+	add_child(caret_blink_timer, false, INTERNAL_MODE_FRONT);
 	caret_blink_timer->set_wait_time(0.65);
 	caret_blink_timer->connect("timeout", callable_mp(this, &TextEdit::_toggle_draw_caret));
 	set_caret_blink_enabled(false);
 
 	/* Selection. */
 	click_select_held = memnew(Timer);
-	add_child(click_select_held);
+	add_child(click_select_held, false, INTERNAL_MODE_FRONT);
 	click_select_held->set_wait_time(0.05);
 	click_select_held->connect("timeout", callable_mp(this, &TextEdit::_click_selection_held));
 
 	idle_detect = memnew(Timer);
-	add_child(idle_detect);
+	add_child(idle_detect, false, INTERNAL_MODE_FRONT);
 	idle_detect->set_one_shot(true);
 	idle_detect->set_wait_time(GLOBAL_GET("gui/timers/text_edit_idle_detect_sec"));
 	idle_detect->connect("timeout", callable_mp(this, &TextEdit::_push_current_op));
diff --git a/scene/gui/tree.cpp b/scene/gui/tree.cpp
index 3e46e2749b..cb990892ed 100644
--- a/scene/gui/tree.cpp
+++ b/scene/gui/tree.cpp
@@ -4795,12 +4795,11 @@ Tree::Tree() {
 
 	popup_menu = memnew(PopupMenu);
 	popup_menu->hide();
-	add_child(popup_menu);
-	//	popup_menu->set_as_top_level(true);
+	add_child(popup_menu, false, INTERNAL_MODE_FRONT);
 
 	popup_editor = memnew(Popup);
 	popup_editor->set_wrap_controls(true);
-	add_child(popup_editor);
+	add_child(popup_editor, false, INTERNAL_MODE_FRONT);
 	popup_editor_vb = memnew(VBoxContainer);
 	popup_editor->add_child(popup_editor_vb);
 	popup_editor_vb->add_theme_constant_override("separation", 0);
@@ -4818,12 +4817,12 @@ Tree::Tree() {
 	h_scroll = memnew(HScrollBar);
 	v_scroll = memnew(VScrollBar);
 
-	add_child(h_scroll);
-	add_child(v_scroll);
+	add_child(h_scroll, false, INTERNAL_MODE_FRONT);
+	add_child(v_scroll, false, INTERNAL_MODE_FRONT);
 
 	range_click_timer = memnew(Timer);
 	range_click_timer->connect("timeout", callable_mp(this, &Tree::_range_click_timeout));
-	add_child(range_click_timer);
+	add_child(range_click_timer, false, INTERNAL_MODE_FRONT);
 
 	h_scroll->connect("value_changed", callable_mp(this, &Tree::_scroll_moved));
 	v_scroll->connect("value_changed", callable_mp(this, &Tree::_scroll_moved));