From 79de82f7d0c3d3b506bc459986e295d4545e790e Mon Sep 17 00:00:00 2001
From: volzhs <volzhs@gmail.com>
Date: Mon, 11 Dec 2017 20:46:33 +0900
Subject: [PATCH] Fix Index p_current=0 error at starting editor

---
 scene/gui/tab_container.cpp | 11 ++++++++---
 scene/gui/tab_container.h   |  1 +
 2 files changed, 9 insertions(+), 3 deletions(-)

diff --git a/scene/gui/tab_container.cpp b/scene/gui/tab_container.cpp
index 581034ddee6..f2a2d862dee 100644
--- a/scene/gui/tab_container.cpp
+++ b/scene/gui/tab_container.cpp
@@ -294,13 +294,17 @@ void TabContainer::_notification(int p_what) {
 			}
 		} break;
 		case NOTIFICATION_THEME_CHANGED: {
-			if (get_tab_count() > 0) {
-				call_deferred("set_current_tab", get_current_tab()); //wait until all changed theme
-			}
+			call_deferred("_on_theme_changed"); //wait until all changed theme
 		} break;
 	}
 }
 
+void TabContainer::_on_theme_changed() {
+	if (get_tab_count() > 0) {
+		set_current_tab(get_current_tab());
+	}
+}
+
 int TabContainer::_get_tab_width(int p_index) const {
 
 	ERR_FAIL_INDEX_V(p_index, get_tab_count(), 0);
@@ -658,6 +662,7 @@ void TabContainer::_bind_methods() {
 	ClassDB::bind_method(D_METHOD("get_popup"), &TabContainer::get_popup);
 
 	ClassDB::bind_method(D_METHOD("_child_renamed_callback"), &TabContainer::_child_renamed_callback);
+	ClassDB::bind_method(D_METHOD("_on_theme_changed"), &TabContainer::_on_theme_changed);
 
 	ADD_SIGNAL(MethodInfo("tab_changed", PropertyInfo(Variant::INT, "tab")));
 	ADD_SIGNAL(MethodInfo("tab_selected", PropertyInfo(Variant::INT, "tab")));
diff --git a/scene/gui/tab_container.h b/scene/gui/tab_container.h
index be59a16b3f8..a36c4f3790e 100644
--- a/scene/gui/tab_container.h
+++ b/scene/gui/tab_container.h
@@ -60,6 +60,7 @@ private:
 
 	Vector<Control *> _get_tabs() const;
 	int _get_tab_width(int p_index) const;
+	void _on_theme_changed();
 
 protected:
 	void _child_renamed_callback();