Multiple scene editing *POTENTIALLY UNSTABLE*

-ability to edit multiple scenes at the same time
-resource internal IDs are now persistent, this makes multiple scene
editing possible but maaaaay result in file corruption bugs (tested and
could not find anything but possibility exists because core code
changed, report immediately if you find this).
-properly save settings, layout, etc when edited
-script editing is independent from scene editing now
-show a yellow box when a script belongs to the scene

16 files changed, 949 insertions, 248 deletions

diff --git a/tools/editor/editor_data.cpp b/tools/editor/editor_data.cpp
index a635034aca..c4808d0cad 100644
--- a/tools/editor/editor_data.cpp
+++ b/tools/editor/editor_data.cpp
@@ -424,9 +424,182 @@ void EditorData::remove_custom_type(const String& p_type){
 
 }
 
+int EditorData::add_edited_scene(int p_at_pos) {
+
+	if (p_at_pos<0)
+		p_at_pos=edited_scene.size();
+	EditedScene es;
+	es.root=NULL;
+	es.history_current=-1;
+	es.version=0;
+
+	if (p_at_pos==edited_scene.size())
+		edited_scene.push_back(es);
+	else
+		edited_scene.insert(p_at_pos,es);
+
+	if (current_edited_scene<0)
+		current_edited_scene=0;
+	return p_at_pos;
+}
+
+void EditorData::move_edited_scene_index(int p_idx,int p_to_idx){
+
+	ERR_FAIL_INDEX(p_idx,edited_scene.size());
+	ERR_FAIL_INDEX(p_to_idx,edited_scene.size());
+	SWAP(edited_scene[p_idx],edited_scene[p_to_idx]);
+}
+void EditorData::remove_scene(int p_idx){
+	ERR_FAIL_INDEX(p_idx,edited_scene.size());
+	if (edited_scene[p_idx].root)
+		memdelete(edited_scene[p_idx].root);
+
+	if (current_edited_scene>p_idx)
+		current_edited_scene--;
+	else if (current_edited_scene==p_idx && current_edited_scene>0) {
+		current_edited_scene--;
+	}
+
+	edited_scene.remove(p_idx);
+
+}
+int EditorData::get_edited_scene() const {
+
+	return current_edited_scene;
+}
+void EditorData::set_edited_scene(int p_idx){
+
+	ERR_FAIL_INDEX(p_idx,edited_scene.size());
+	current_edited_scene=p_idx;
+	//swap
+}
+Node* EditorData::get_edited_scene_root(){
+
+	ERR_FAIL_INDEX_V(current_edited_scene,edited_scene.size(),NULL);
+
+	return edited_scene[current_edited_scene].root;
+}
+void EditorData::set_edited_scene_root(Node* p_root) {
+
+	ERR_FAIL_INDEX(current_edited_scene,edited_scene.size());
+	edited_scene[current_edited_scene].root=p_root;
+}
+
+int EditorData::get_edited_scene_count() const {
+
+	return edited_scene.size();
+}
+
+void EditorData::set_edited_scene_version(uint64_t version) {
+	ERR_FAIL_INDEX(current_edited_scene,edited_scene.size());
+	edited_scene[current_edited_scene].version=version;
+
+}
+
+uint64_t EditorData::get_edited_scene_version() const{
+
+	ERR_FAIL_INDEX_V(current_edited_scene,edited_scene.size(),0);
+	return edited_scene[current_edited_scene].version;
+
+}
+uint64_t EditorData::get_scene_version(int p_idx) const{
+	ERR_FAIL_INDEX_V(p_idx,edited_scene.size(),false);
+	return edited_scene[p_idx].version;
+}
+
+String EditorData::get_scene_title(int p_idx) const {
+	ERR_FAIL_INDEX_V(p_idx,edited_scene.size(),String());
+	if (!edited_scene[p_idx].root)
+		return "[empty]";
+	if (edited_scene[p_idx].root->get_filename()=="")
+		return "[unsaved]";
+	return edited_scene[p_idx].root->get_filename().get_file();
+}
+
+
+String EditorData::get_scene_path(int p_idx) const {
+
+	ERR_FAIL_INDEX_V(p_idx,edited_scene.size(),String());
+
+	if (!edited_scene[p_idx].root)
+		return "";
+	return edited_scene[p_idx].root->get_filename();
+
+}
+
+void EditorData::save_edited_scene_state(EditorSelection *p_selection, EditorHistory *p_history, const Dictionary& p_custom) {
+
+	ERR_FAIL_INDEX(current_edited_scene,edited_scene.size());
+
+	EditedScene &es=edited_scene[current_edited_scene];
+	es.selection = p_selection->get_selected_node_list();
+	es.history_current=p_history->current;
+	es.history_stored=p_history->history;
+	es.editor_states=get_editor_states();
+	es.custom_state=p_custom;
+
+}
+
+Dictionary EditorData::restore_edited_scene_state(EditorSelection *p_selection, EditorHistory *p_history) {
+	ERR_FAIL_INDEX_V(current_edited_scene,edited_scene.size(),Dictionary());
+
+	EditedScene &es=edited_scene[current_edited_scene];
+
+	p_history->current=es.history_current;
+	p_history->history=es.history_stored;
+
+
+	p_selection->clear();
+	for(List<Node*>::Element *E=es.selection.front();E;E=E->next()) {
+		p_selection->add_node(E->get());
+	}
+	set_editor_states(es.editor_states);
+
+	return es.custom_state;
+}
+
+
+void EditorData::set_edited_scene_import_metadata(Ref<ResourceImportMetadata> p_mdata) {
+
+	ERR_FAIL_INDEX(current_edited_scene,edited_scene.size());
+	edited_scene[current_edited_scene].medatata=p_mdata;
+
+}
+
+Ref<ResourceImportMetadata> EditorData::get_edited_scene_import_metadata() const{
+
+	ERR_FAIL_INDEX_V(current_edited_scene,edited_scene.size(),Ref<ResourceImportMetadata>());
+	return edited_scene[current_edited_scene].medatata;
+}
+
+void EditorData::clear_edited_scenes() {
+
+	for(int i=0;i<edited_scene.size();i++) {
+		if (edited_scene[i].root) {
+			memdelete( edited_scene[i].root );
+		}
+	}
+	edited_scene.clear();
+}
+
+
+
+void EditorData::set_plugin_window_layout(Ref<ConfigFile> p_layout) {
+	for(int i=0;i<editor_plugins.size();i++) {
+		editor_plugins[i]->set_window_layout(p_layout);
+	}
+}
+
+void EditorData::get_plugin_window_layout(Ref<ConfigFile> p_layout) {
+	for(int i=0;i<editor_plugins.size();i++) {
+		editor_plugins[i]->get_window_layout(p_layout);
+	}
+}
 
 EditorData::EditorData() {
 
+	current_edited_scene=-1;
+
 //	load_imported_scenes_from_globals();
 }
 
diff --git a/tools/editor/editor_data.h b/tools/editor/editor_data.h
index 42abb317d1..e3fdd52d01 100644
--- a/tools/editor/editor_data.h
+++ b/tools/editor/editor_data.h
@@ -55,6 +55,7 @@ class EditorHistory {
 		Vector<Obj> path;
 		int level;
 	};
+friend class EditorData;
 
 	Vector<History> history;
 	int current;
@@ -91,6 +92,8 @@ public:
 	EditorHistory();
 };
 
+class EditorSelection;
+
 class EditorData {
 
 public:
@@ -117,6 +120,21 @@ private:
 
 	void _cleanup_history();
 
+	struct EditedScene {
+		Node* root;
+		Dictionary editor_states;
+		Ref<ResourceImportMetadata> medatata;
+		List<Node*> selection;
+		Vector<EditorHistory::History> history_stored;
+		int history_current;
+		Dictionary custom_state;
+		uint64_t version;
+
+
+	};
+
+	Vector<EditedScene> edited_scene;
+	int current_edited_scene;
 
 public:
 
@@ -146,6 +164,32 @@ public:
 	void remove_custom_type(const String& p_type);
 	const Map<String,Vector<CustomType> >& get_custom_types() const { return custom_types; }
 
+
+	int add_edited_scene(int p_at_pos);
+	void move_edited_scene_index(int p_idx,int p_to_idx);
+	void remove_scene(int p_idx);
+	void set_edited_scene(int p_idx);
+	void set_edited_scene_root(Node* p_root);
+	void set_edited_scene_import_metadata(Ref<ResourceImportMetadata> p_mdata);
+	Ref<ResourceImportMetadata> get_edited_scene_import_metadata() const;
+	int get_edited_scene() const;
+	Node* get_edited_scene_root();
+	int get_edited_scene_count() const;
+	String get_scene_title(int p_idx) const;
+	String get_scene_path(int p_idx) const;
+	void set_edited_scene_version(uint64_t version);
+	uint64_t get_edited_scene_version() const;
+	uint64_t get_scene_version(int p_idx) const;
+	void clear_edited_scenes();
+
+
+	void set_plugin_window_layout(Ref<ConfigFile> p_layout);
+	void get_plugin_window_layout(Ref<ConfigFile> p_layout);
+
+	void save_edited_scene_state(EditorSelection *p_selection,EditorHistory *p_history,const Dictionary& p_custom);
+	Dictionary restore_edited_scene_state(EditorSelection *p_selection, EditorHistory *p_history);
+
+
 	EditorData();
 };
 
diff --git a/tools/editor/editor_node.cpp b/tools/editor/editor_node.cpp
index 373c8aba73..d080ac3597 100644
--- a/tools/editor/editor_node.cpp
+++ b/tools/editor/editor_node.cpp
@@ -105,11 +105,24 @@
 
 EditorNode *EditorNode::singleton=NULL;
 
+void EditorNode::_update_scene_tabs() {
+
+	scene_tabs->clear_tabs();
+	for(int i=0;i<editor_data.get_edited_scene_count();i++) {
+		int current = editor_data.get_edited_scene();
+		bool unsaved = (i==current)?saved_version!=editor_data.get_undo_redo().get_version():editor_data.get_scene_version(i)!=0;
+		scene_tabs->add_tab(editor_data.get_scene_title(i)+(unsaved?"(*)":""));
+	}
+
+	scene_tabs->set_current_tab(editor_data.get_edited_scene());
+
+}
+
 void EditorNode::_update_title() {
 
 	String appname = Globals::get_singleton()->get("application/name");
 	String title = appname.empty()?String(VERSION_FULL_NAME):String(_MKSTR(VERSION_NAME) + String(" - ") + appname);
-	String edited = edited_scene?edited_scene->get_filename():String();
+	String edited = editor_data.get_edited_scene_root()?editor_data.get_edited_scene_root()->get_filename():String();
 	if (!edited.empty())
 		title+=" - " + String(edited.get_file());
 	if (unsaved_cache)
@@ -174,6 +187,11 @@ void EditorNode::_notification(int p_what) {
 			_update_title();
 		}
 
+		if (last_checked_version!=editor_data.get_undo_redo().get_version()) {
+			_update_scene_tabs();
+			last_checked_version=editor_data.get_undo_redo().get_version();
+		}
+
 		//get_root_node()->set_rect(viewport->get_global_rect());
 
 		//update the circle
@@ -231,6 +249,13 @@ void EditorNode::_notification(int p_what) {
 
 		//import_monitor->scan_changes();
 	}
+
+	if (p_what==NOTIFICATION_EXIT_TREE) {
+
+
+		editor_data.clear_edited_scenes();
+
+	}
 	if (p_what==NOTIFICATION_READY) {
 
 		VisualServer::get_singleton()->viewport_set_hide_scenario(get_scene_root()->get_viewport(),true);
@@ -468,7 +493,7 @@ void EditorNode::_dialog_display_file_error(String p_file,Error p_error) {
 
 void EditorNode::_get_scene_metadata() {
 
-	Node *scene = edited_scene;
+	Node *scene = editor_data.get_edited_scene_root();
 
 	if (!scene)
 		return;
@@ -495,7 +520,7 @@ void EditorNode::_get_scene_metadata() {
 
 void EditorNode::_set_scene_metadata() {
 
-	Node *scene = edited_scene;
+	Node *scene = editor_data.get_edited_scene_root();
 
 	if (!scene)
 		return;
@@ -718,7 +743,7 @@ void EditorNode::_save_edited_subresources(Node* scene,Map<RES,bool>& processed,
 	for(int i=0;i<scene->get_child_count();i++) {
 
 		Node *n = scene->get_child(i);
-		if (n->get_owner()!=edited_scene)
+		if (n->get_owner()!=editor_data.get_edited_scene_root())
 			continue;
 		_save_edited_subresources(n,processed,flags);
 	}
@@ -727,7 +752,7 @@ void EditorNode::_save_edited_subresources(Node* scene,Map<RES,bool>& processed,
 
 void EditorNode::_find_node_types(Node* p_node, int&count_2d, int&count_3d) {
 
-	if (p_node->is_type("Viewport") || (p_node!=get_edited_scene() && p_node->get_owner()!=get_edited_scene()))
+	if (p_node->is_type("Viewport") || (p_node!=editor_data.get_edited_scene_root() && p_node->get_owner()!=editor_data.get_edited_scene_root()))
 		return;
 
 	if (p_node->is_type("CanvasItem"))
@@ -748,7 +773,7 @@ void EditorNode::_save_scene_with_preview(String p_file) {
 
 	EditorProgress save("save","Saving Scene",4);
 	save.step("Analyzing",0);
-	_find_node_types(get_edited_scene(),c2d,c3d);
+	_find_node_types(editor_data.get_edited_scene_root(),c2d,c3d);
 
 	RID viewport;
 	bool is2d;
@@ -799,11 +824,11 @@ void EditorNode::_save_scene_with_preview(String p_file) {
 	img.save_png(pfile);
 	Vector<uint8_t> imgdata = FileAccess::get_file_as_array(pfile);
 
-	print_line("img data is "+itos(imgdata.size()));
+	//print_line("img data is "+itos(imgdata.size()));
 
-	if (scene_import_metadata.is_null())
-		scene_import_metadata = Ref<ResourceImportMetadata>( memnew( ResourceImportMetadata ) );
-	scene_import_metadata->set_option("thumbnail",imgdata);
+	if (editor_data.get_edited_scene_import_metadata().is_null())
+		editor_data.set_edited_scene_import_metadata(Ref<ResourceImportMetadata>( memnew( ResourceImportMetadata ) ) );
+	editor_data.get_edited_scene_import_metadata()->set_option("thumbnail",imgdata);
 
 	//tamanio tel thumbnail
 	if (screen!=-1) {
@@ -817,7 +842,7 @@ void EditorNode::_save_scene_with_preview(String p_file) {
 
 void EditorNode::_save_scene(String p_file) {
 
-	Node *scene = edited_scene;
+	Node *scene = editor_data.get_edited_scene_root();
 
 	if (!scene) {
 
@@ -851,7 +876,7 @@ void EditorNode::_save_scene(String p_file) {
 		return;
 	}
 
-	sdata->set_import_metadata(scene_import_metadata);
+	sdata->set_import_metadata(editor_data.get_edited_scene_import_metadata());
 	int flg=0;
 	if (EditorSettings::get_singleton()->get("on_save/compress_binary_resources"))
 		flg|=ResourceSaver::FLAG_COMPRESS;
@@ -867,7 +892,7 @@ void EditorNode::_save_scene(String p_file) {
 	if (err==OK) {
 		scene->set_filename( Globals::get_singleton()->localize_path(p_file) );
 		//EditorFileSystem::get_singleton()->update_file(p_file,sdata->get_type());
-		saved_version=editor_data.get_undo_redo().get_version();
+		set_current_version(editor_data.get_undo_redo().get_version());
 		_update_title();
 	} else {
 
@@ -1055,7 +1080,7 @@ void EditorNode::_dialog_action(String p_file) {
 			Node *base = selection.front()->get();
 
 			Map<Node*,Node*> reown;
-			reown[get_edited_scene()]=base;
+			reown[editor_data.get_edited_scene_root()]=base;
 			Node *copy = base->duplicate_and_reown(reown);
 			if (copy) {
 
@@ -1150,7 +1175,7 @@ void EditorNode::_dialog_action(String p_file) {
 				ml = Ref<MeshLibrary>( memnew( MeshLibrary ));
 			}
 
-			MeshLibraryEditor::update_library_file(edited_scene,ml,true);
+			MeshLibraryEditor::update_library_file(editor_data.get_edited_scene_root(),ml,true);
 
 			Error err = ResourceSaver::save(p_file,ml);
 			if (err) {
@@ -1184,7 +1209,7 @@ void EditorNode::_dialog_action(String p_file) {
 				ml = Ref<TileSet>( memnew( TileSet ));
 			}
 
-			TileSetEditor::update_library_file(edited_scene,ml,true);
+			TileSetEditor::update_library_file(editor_data.get_edited_scene_root(),ml,true);
 
 			Error err = ResourceSaver::save(p_file,ml);
 			if (err) {
@@ -1325,15 +1350,15 @@ void EditorNode::_property_editor_back() {
 
 void EditorNode::_imported(Node *p_node) {
 
-	Node *scene = edited_scene;
-	set_edited_scene(p_node);
-
+	Node *scene = editor_data.get_edited_scene_root();
+//	add_edited_scene(p_node);
+/*
 	if (scene) {
 		String path = scene->get_filename();
 		p_node->set_filename(path);
 		memdelete(scene);
 	}
-
+*/
 
 
 }
@@ -1408,17 +1433,22 @@ void EditorNode::_edit_current() {
 		if (main_plugin!=editor_plugin_screen) {
 
 			// update screen main_plugin
-			if (editor_plugin_screen)
-				editor_plugin_screen->make_visible(false);
-			editor_plugin_screen=main_plugin;
-			editor_plugin_screen->edit(current_obj);
-			editor_plugin_screen->make_visible(true);
 
+			if (!changing_scene) {
 
-			for(int i=0;i<editor_table.size();i++) {
-				if (editor_table[i]==main_plugin) {
-					main_editor_tabs->set_current_tab(i);
-					break;
+				if (editor_plugin_screen)
+					editor_plugin_screen->make_visible(false);
+				editor_plugin_screen=main_plugin;
+				editor_plugin_screen->edit(current_obj);
+
+				editor_plugin_screen->make_visible(true);
+
+
+				for(int i=0;i<editor_table.size();i++) {
+					if (editor_table[i]==main_plugin) {
+						main_editor_tabs->set_current_tab(i);
+						break;
+					}
 				}
 			}
 
@@ -1527,10 +1557,10 @@ void EditorNode::_run(bool p_current,const String& p_custom) {
 
 
 
-	if (p_current || (edited_scene && p_custom==edited_scene->get_filename())) {
+	if (p_current || (editor_data.get_edited_scene_root() && p_custom==editor_data.get_edited_scene_root()->get_filename())) {
 
 
-		Node *scene = edited_scene;
+		Node *scene = editor_data.get_edited_scene_root();
 
 		if (!scene) {
 
@@ -1592,7 +1622,7 @@ void EditorNode::_run(bool p_current,const String& p_custom) {
 
 		if (unsaved_cache) {
 
-			Node *scene = edited_scene;
+			Node *scene = editor_data.get_edited_scene_root();
 
 			if (scene) { //only autosave if there is a scene obviously
 
@@ -1644,8 +1674,8 @@ void EditorNode::_run(bool p_current,const String& p_custom) {
 
 void EditorNode::_cleanup_scene() {
 
-
-	Node *scene = edited_scene;
+#if 0
+	Node *scene = editor_data.get_edited_scene_root();
 	editor_selection->clear();
 	editor_data.clear_editor_states();
 	editor_history.clear();
@@ -1654,7 +1684,7 @@ void EditorNode::_cleanup_scene() {
 	property_editor->edit(NULL);
 	resources_dock->cleanup();
 	scene_import_metadata.unref();
-	set_edited_scene(NULL);
+	//set_edited_scene(NULL);
 	if (scene) {
 		if (scene->get_filename()!="") {
 			previous_scenes.push_back(scene->get_filename());
@@ -1680,7 +1710,7 @@ void EditorNode::_cleanup_scene() {
 	}
 	
 	_update_title();
-
+#endif
 }
 
 void EditorNode::_menu_option_confirm(int p_option,bool p_confirmed) {
@@ -1693,16 +1723,20 @@ void EditorNode::_menu_option_confirm(int p_option,bool p_confirmed) {
 	switch( p_option ) {
 		case FILE_NEW_SCENE: {
 
+			/*
 			if (!p_confirmed) {
 				confirmation->get_ok()->set_text("Yes");
 				//confirmation->get_cancel()->show();
 				confirmation->set_text("Start a New Scene? (Current will be lost)");
 				confirmation->popup_centered_minsize();
 				break;
-			}
+			}*/
+
 
+			int idx = editor_data.add_edited_scene(-1);
+			_scene_tab_changed(idx);
 
-			_cleanup_scene();
+			//_cleanup_scene();
 
 			
 		} break;
@@ -1722,7 +1756,7 @@ void EditorNode::_menu_option_confirm(int p_option,bool p_confirmed) {
 			
 
 			//file->set_current_path(current_path);
-			Node *scene = edited_scene;
+			Node *scene = editor_data.get_edited_scene_root();
 			if (scene) {
 				file->set_current_path(scene->get_filename());
 			};
@@ -1755,10 +1789,25 @@ void EditorNode::_menu_option_confirm(int p_option,bool p_confirmed) {
 			open_request(previous_scenes.back()->get());
 
 		} break;
+		case FILE_CLOSE: {
+
+			if (!p_confirmed) {
+				confirmation->get_ok()->set_text("Yes");
+				//confirmation->get_cancel()->show();
+				confirmation->set_text("Close scene? (Unsaved changes will be lost)");
+				confirmation->popup_centered_minsize();
+				break;
+			}
+
+			_remove_edited_scene();
+
+
+
+		} break;
 		case FILE_SAVE_SCENE: {
 
 
-			Node *scene = edited_scene;
+			Node *scene = editor_data.get_edited_scene_root();
 			if (scene && scene->get_filename()!="") {
 
 				//_save_scene(scene->get_filename());
@@ -1769,7 +1818,7 @@ void EditorNode::_menu_option_confirm(int p_option,bool p_confirmed) {
 		};
 		case FILE_SAVE_AS_SCENE: {
 			
-			Node *scene = edited_scene;
+			Node *scene = editor_data.get_edited_scene_root();
 			
 			if (!scene) {
 				
@@ -1831,7 +1880,7 @@ void EditorNode::_menu_option_confirm(int p_option,bool p_confirmed) {
 
 		case FILE_DUMP_STRINGS: {
 
-			Node *scene = edited_scene;
+			Node *scene = editor_data.get_edited_scene_root();
 
 			if (!scene) {
 
@@ -1875,7 +1924,7 @@ void EditorNode::_menu_option_confirm(int p_option,bool p_confirmed) {
 
 		case FILE_SAVE_SUBSCENE: {
 
-			Node *scene = edited_scene;
+			Node *scene = editor_data.get_edited_scene_root();
 
 			if (!scene) {
 
@@ -1902,7 +1951,7 @@ void EditorNode::_menu_option_confirm(int p_option,bool p_confirmed) {
 
 			Node *tocopy = selection.front()->get();
 
-			if (tocopy!=edited_scene && tocopy->get_filename()!="") {
+			if (tocopy!=editor_data.get_edited_scene_root() && tocopy->get_filename()!="") {
 
 
 				current_option=-1;
@@ -1936,7 +1985,7 @@ void EditorNode::_menu_option_confirm(int p_option,bool p_confirmed) {
 			file->set_title("Save Sub-Scene As..");
 		} break;
 		case FILE_SAVE_OPTIMIZED: {
-			Node *scene = edited_scene;
+			Node *scene = editor_data.get_edited_scene_root();
 #if 0
 			if (!scene) {
 
@@ -1998,7 +2047,7 @@ void EditorNode::_menu_option_confirm(int p_option,bool p_confirmed) {
 
 		case FILE_EXPORT_MESH_LIBRARY: {
 
-			if (!edited_scene) {
+			if (!editor_data.get_edited_scene_root()) {
 
 				current_option=-1;
 				//confirmation->get_cancel()->hide();
@@ -2043,7 +2092,7 @@ void EditorNode::_menu_option_confirm(int p_option,bool p_confirmed) {
 
 			//import_subscene->popup_centered_ratio();
 
-			if (!edited_scene) {
+			if (!editor_data.get_edited_scene_root()) {
 
 				current_option=-1;
 				//accept->get_cancel()->hide();
@@ -2569,30 +2618,54 @@ void EditorNode::remove_editor_import_plugin(const Ref<EditorImportPlugin>& p_ed
 	_rebuild_import_menu();
 }
 
+void EditorNode::_remove_edited_scene() {
+	int new_index = editor_data.get_edited_scene();
+	int old_index=new_index;
+
+	if (new_index>0) {
+		new_index=new_index-1;
+	} else if (editor_data.get_edited_scene_count()>1) {
+		new_index=1;
+	} else {
+		editor_data.add_edited_scene(-1);
+		new_index=1;
+	}
+
+	_scene_tab_changed(new_index);
+	editor_data.remove_scene(old_index);
+	editor_data.get_undo_redo().clear_history();
+	_update_title();
+	_update_scene_tabs();
 
+	if (editor_data.get_edited_scene_count()==1) {
+		//make new scene appear saved
+		set_current_version(editor_data.get_undo_redo().get_version());
+		unsaved_cache=false;
+	}
+}
 void EditorNode::set_edited_scene(Node *p_scene) {
 
-	if (edited_scene) {
-		if (edited_scene->get_parent()==scene_root)
-			scene_root->remove_child(edited_scene);
+	if (get_editor_data().get_edited_scene_root()) {
+		if (get_editor_data().get_edited_scene_root()->get_parent()==scene_root)
+			scene_root->remove_child(get_editor_data().get_edited_scene_root());
 		animation_editor->set_root(NULL);
 	}	
-	edited_scene=p_scene;
-	if (edited_scene && edited_scene->cast_to<Popup>())
-		edited_scene->cast_to<Popup>()->show(); //show popups
-	scene_tree_dock->set_edited_scene(edited_scene);
+	get_editor_data().set_edited_scene_root(p_scene);
+	
+	if (p_scene && p_scene->cast_to<Popup>())
+		p_scene->cast_to<Popup>()->show(); //show popups
+	scene_tree_dock->set_edited_scene(p_scene);
 	if (get_tree())
-		get_tree()->set_edited_scene_root(edited_scene);
+		get_tree()->set_edited_scene_root(p_scene);
 
-	if (edited_scene) {
+	if (p_scene) {
 		if (p_scene->get_parent()!=scene_root)
 			scene_root->add_child(p_scene);
 		animation_editor->set_root(p_scene);
 	}
-
-
 }
 
+
 void EditorNode::_fetch_translatable_strings(const Object *p_object,Set<StringName>& strings) {
 
 
@@ -2818,6 +2891,115 @@ Error EditorNode::save_optimized_copy(const String& p_scene,const String& p_pres
 	return OK;
 }
 
+
+Dictionary EditorNode::_get_main_scene_state() {
+
+	Dictionary state;
+	state["main_tab"]=main_editor_tabs->get_current_tab();
+	state["scene_tree_offset"]=scene_tree_dock->get_tree_editor()->get_scene_tree()->get_vscroll_bar()->get_val();
+	state["property_edit_offset"]=get_property_editor()->get_scene_tree()->get_vscroll_bar()->get_val();
+	state["saved_version"]=saved_version;
+	//print_line(" getting main tab: "+itos(state["main_tab"]));
+	return state;
+}
+
+void EditorNode::_set_main_scene_state(Dictionary p_state) {
+
+	//print_line("set current 7 ");
+
+	if (p_state.has("main_tab")) {
+		int idx = p_state["main_tab"];
+		int current=-1;
+		for(int i=0;i<editor_table.size();i++) {
+			if (editor_plugin_screen==editor_table[i]) {
+				current=i;
+				break;
+			}
+		}
+
+		if (idx<2 && current<2) {
+			//only set tab for 2D and 3D
+			_editor_select(p_state["main_tab"]);
+			//print_line(" setting main tab: "+itos(p_state["main_tab"]));
+		}
+	}
+
+	if (p_state.has("scene_tree_offset"))
+		scene_tree_dock->get_tree_editor()->get_scene_tree()->get_vscroll_bar()->set_val(p_state["scene_tree_offset"]);
+	if (p_state.has("property_edit_offset"))
+		get_property_editor()->get_scene_tree()->get_vscroll_bar()->set_val(p_state["property_edit_offset"]);
+
+	//print_line("set current 8 ");
+
+
+}
+
+void EditorNode::set_current_version(uint64_t p_version) {
+
+	saved_version=p_version;
+	editor_data.set_edited_scene_version(p_version);
+}
+
+bool EditorNode::is_changing_scene() const {
+	return changing_scene;
+}
+void EditorNode::set_current_scene(int p_idx) {
+
+	changing_scene=true;
+	editor_data.save_edited_scene_state(editor_selection,&editor_history,_get_main_scene_state());
+
+	if (get_editor_data().get_edited_scene_root()) {
+		if (get_editor_data().get_edited_scene_root()->get_parent()==scene_root)
+			scene_root->remove_child(get_editor_data().get_edited_scene_root());
+		animation_editor->set_root(NULL);
+	}
+
+	//print_line("set current 2 ");
+
+	editor_selection->clear();
+	editor_data.set_edited_scene(p_idx);
+
+	Node* new_scene = editor_data.get_edited_scene_root();
+
+	if (new_scene && new_scene->cast_to<Popup>())
+		new_scene->cast_to<Popup>()->show(); //show popups
+
+	//print_line("set current 3 ");
+
+	scene_tree_dock->set_edited_scene(new_scene);
+	if (get_tree())
+		get_tree()->set_edited_scene_root(new_scene);
+
+	if (new_scene) {
+		if (new_scene->get_parent()!=scene_root)
+			scene_root->add_child(new_scene);
+		animation_editor->set_root(new_scene);
+	}
+	//print_line("set current 4 ");
+
+
+	Dictionary state = editor_data.restore_edited_scene_state(editor_selection,&editor_history);
+	_edit_current();
+
+	/*if (!unsaved) {
+		saved_version=editor_data.get_undo_redo().get_version();
+		if (p_backwards)
+			saved_version--;
+		else
+			saved_version++;
+		print_line("was saved, updating version");
+	} else {
+		saved_version=state["saved_version"];
+	}*/
+	//_set_main_scene_state(state);
+
+	call_deferred("_set_main_scene_state",state); //do after everything else is done setting up
+	//print_line("set current 6 ");
+	changing_scene=false;
+
+
+}
+
 Error EditorNode::load_scene(const String& p_scene) {
 
 	if (!is_inside_tree()) {
@@ -2826,6 +3008,14 @@ Error EditorNode::load_scene(const String& p_scene) {
 	}
 
 
+	for(int i=0;i<editor_data.get_edited_scene_count();i++) {
+
+		if (editor_data.get_scene_path(i)==p_scene) {
+			_scene_tab_changed(i);
+			return OK;
+		}
+	}
+
 
 	load_errors->clear();
 	String lpath = Globals::get_singleton()->localize_path(p_scene);
@@ -2841,7 +3031,20 @@ Error EditorNode::load_scene(const String& p_scene) {
 		return ERR_FILE_NOT_FOUND;
 	}
 
-	_cleanup_scene(); // i'm sorry but this MUST happen to avoid modified resources to not be reloaded.
+	int prev = editor_data.get_edited_scene();
+	int idx = editor_data.add_edited_scene(-1);
+	//print_line("load scene callback");
+	//set_current_scene(idx);
+
+	if (!editor_data.get_edited_scene_root() && editor_data.get_edited_scene_count()==2) {
+		_remove_edited_scene();
+	} else {
+		_scene_tab_changed(idx);
+	}
+
+
+
+	//_cleanup_scene(); // i'm sorry but this MUST happen to avoid modified resources to not be reloaded.
 
 	Ref<PackedScene> sdata = ResourceLoader::load(lpath);
 	if (!sdata.is_valid()) {
@@ -2852,6 +3055,11 @@ Error EditorNode::load_scene(const String& p_scene) {
 		accept->set_text("Error loading scene.");
 		accept->popup_centered_minsize();
 		opening_prev=false;
+
+		if (prev!=-1) {
+			set_current_scene(prev);
+			editor_data.remove_scene(idx);
+		}
 		return ERR_FILE_NOT_FOUND;
 	}
 
@@ -2859,15 +3067,23 @@ Error EditorNode::load_scene(const String& p_scene) {
 
 	if (!new_scene) {
 
+		sdata.unref();
 		current_option=-1;
 		//accept->get_cancel()->hide();
 		accept->get_ok()->set_text("Ugh");
 		accept->set_text("Error loading scene.");
 		accept->popup_centered_minsize();
 		opening_prev=false;
+		if (prev!=-1) {
+			set_current_scene(prev);
+			editor_data.remove_scene(idx);
+		}
 		return ERR_FILE_NOT_FOUND;
 	}
 
+	//guess not needed in the end?
+	//new_scene->clear_internal_tree_resource_paths(); //make sure no internal tree paths to internal resources exist
+
 	/*
 	Node *old_scene = edited_scene;
 	_hide_top_editors();
@@ -2880,16 +3096,23 @@ Error EditorNode::load_scene(const String& p_scene) {
 		memdelete(old_scene);
 	}
 */
+
 	set_edited_scene(new_scene);
 	_get_scene_metadata();
+	/*
+	editor_data.set_edited_scene_root(new_scene);
+
 	scene_tree_dock->set_selected(new_scene, true);
 	property_editor->edit(new_scene);
-	scene_import_metadata = sdata->get_import_metadata();
+	editor_data.set_edited_scene_root(new_scene);
+*/
+	editor_data.set_edited_scene_import_metadata( sdata->get_import_metadata() );
 
-	editor_data.get_undo_redo().clear_history();
+
+//	editor_data.get_undo_redo().clear_history();
 	saved_version=editor_data.get_undo_redo().get_version();
 	_update_title();
-
+	_update_scene_tabs();
 	_add_to_recent_scenes(lpath);
 
 	if (new_scene->has_meta("__editor_plugin_screen__")) {
@@ -2919,8 +3142,9 @@ Error EditorNode::load_scene(const String& p_scene) {
 
 void EditorNode::open_request(const String& p_path) {
 
-	external_file=p_path;
-	_menu_option_confirm(FILE_EXTERNAL_OPEN_SCENE,false);
+	load_scene(p_path); // as it will be opened in separate tab
+	//external_file=p_path;
+	//_menu_option_confirm(FILE_EXTERNAL_OPEN_SCENE,false);
 }
 
 
@@ -3058,15 +3282,16 @@ void EditorNode::_open_recent_scene(int p_idx) {
 
 	String path = "res://"+rc[p_idx];
 
-	if (unsaved_cache) {
+
+	/*if (unsaved_cache) {
 		_recent_scene=rc[p_idx];
 		open_recent_confirmation->set_text("Discard current scene and open:\n'"+rc[p_idx]+"'");
 		open_recent_confirmation->get_label()->set_align(Label::ALIGN_CENTER);
 		open_recent_confirmation->popup_centered(Size2(400,100));
 		return;
-	}
+	}*/
 
-	load_scene(rc[p_idx]);
+	load_scene(path);
 
 
 }
@@ -3110,12 +3335,6 @@ void EditorNode::_save_optimized() {
 #endif
 }
 
-void EditorNode::_open_recent_scene_confirm() {
-
-	load_scene(_recent_scene);
-
-}
-
 void EditorNode::_update_recent_scenes() {
 
 	String base="_"+Globals::get_singleton()->get_resource_path().replace("\\","::").replace("/","::");
@@ -3325,7 +3544,7 @@ void EditorNode::_bind_methods() {
 	//ObjectTypeDB::bind_method("_import",&EditorNode::_import);
 //	ObjectTypeDB::bind_method("_import_conflicts_solved",&EditorNode::_import_conflicts_solved);
 	ObjectTypeDB::bind_method("_open_recent_scene",&EditorNode::_open_recent_scene);
-	ObjectTypeDB::bind_method("_open_recent_scene_confirm",&EditorNode::_open_recent_scene_confirm);
+//	ObjectTypeDB::bind_method("_open_recent_scene_confirm",&EditorNode::_open_recent_scene_confirm);
 
 	ObjectTypeDB::bind_method("_save_optimized",&EditorNode::_save_optimized);
 	ObjectTypeDB::bind_method(_MD("animation_panel_make_visible","enable"),&EditorNode::animation_panel_make_visible);
@@ -3343,6 +3562,11 @@ void EditorNode::_bind_methods() {
 	ObjectTypeDB::bind_method("_dock_move_left",&EditorNode::_dock_move_left);
 	ObjectTypeDB::bind_method("_dock_move_right",&EditorNode::_dock_move_right);
 
+	ObjectTypeDB::bind_method("set_current_scene",&EditorNode::set_current_scene);
+	ObjectTypeDB::bind_method("set_current_version",&EditorNode::set_current_version);
+	ObjectTypeDB::bind_method("_scene_tab_changed",&EditorNode::_scene_tab_changed);
+	ObjectTypeDB::bind_method("_set_main_scene_state",&EditorNode::_set_main_scene_state);
+	ObjectTypeDB::bind_method("_update_scene_tabs",&EditorNode::_update_scene_tabs);
 
 
 
@@ -3655,10 +3879,29 @@ void EditorNode::_save_docks() {
 	}
 
 
+	HSplitContainer *h_splits[4]={
+		left_l_hsplit,
+		left_r_hsplit,
+		main_hsplit,
+		right_hsplit,
+	};
+
+	for(int i=0;i<4;i++) {
+
+		config->set_value("docks","dock_hsplit_"+itos(i+1),h_splits[i]->get_split_offset());
+	}
+
+	editor_data.get_plugin_window_layout(config);
+
 	config->save(EditorSettings::get_singleton()->get_project_settings_path().plus_file("editor_layout.cfg"));
 
 }
 
+void EditorNode::save_layout() {
+
+	dock_drag_timer->start();
+}
+
 void EditorNode::_dock_split_dragged(int ofs) {
 
 	dock_drag_timer->start();
@@ -3732,6 +3975,20 @@ void EditorNode::_load_docks() {
 		splits[i]->set_split_offset(ofs);
 	}
 
+	HSplitContainer *h_splits[4]={
+		left_l_hsplit,
+		left_r_hsplit,
+		main_hsplit,
+		right_hsplit,
+	};
+
+	for(int i=0;i<4;i++) {
+		if (!config->has_section_key("docks","dock_hsplit_"+itos(i+1)))
+			continue;
+		int ofs = config->get_value("docks","dock_hsplit_"+itos(i+1));
+		h_splits[i]->set_split_offset(ofs);
+	}
+
 	for(int i=0;i<DOCK_SLOT_MAX/2;i++) {
 		bool in_use = dock_slot[i*2+0]->get_tab_count() || dock_slot[i*2+1]->get_tab_count();
 		if (in_use)
@@ -3747,6 +4004,38 @@ void EditorNode::_load_docks() {
 		}
 	}
 
+	editor_data.set_plugin_window_layout(config);
+
+}
+
+
+void EditorNode::_scene_tab_changed(int p_tab) {
+
+
+	//print_line("set current 1 ");
+	bool unsaved = (saved_version!=editor_data.get_undo_redo().get_version());
+	//print_line("version: "+itos(editor_data.get_undo_redo().get_version())+", saved "+itos(saved_version));
+
+	if (p_tab==editor_data.get_edited_scene())
+		return; //pointless
+
+	uint64_t next_scene_version = editor_data.get_scene_version(p_tab);
+
+
+
+	//print_line("scene tab changed???");
+	editor_data.get_undo_redo().create_action("Switch Scene Tab");
+	editor_data.get_undo_redo().add_do_method(this,"set_current_version",unsaved?saved_version:0);
+	editor_data.get_undo_redo().add_do_method(this,"set_current_scene",p_tab);
+	editor_data.get_undo_redo().add_do_method(scene_tabs,"set_current_tab",p_tab);
+	editor_data.get_undo_redo().add_do_method(this,"set_current_version",next_scene_version==0?editor_data.get_undo_redo().get_version()+1:next_scene_version);
+
+	editor_data.get_undo_redo().add_undo_method(this,"set_current_version",next_scene_version);
+	editor_data.get_undo_redo().add_undo_method(this,"set_current_scene",editor_data.get_edited_scene());
+	editor_data.get_undo_redo().add_undo_method(scene_tabs,"set_current_tab",editor_data.get_edited_scene());
+	editor_data.get_undo_redo().add_undo_method(this,"set_current_version",saved_version);
+	editor_data.get_undo_redo().commit_action();
+
 }
 
 EditorNode::EditorNode() {
@@ -3754,6 +4043,8 @@ EditorNode::EditorNode() {
 	EditorHelp::generate_doc(); //before any editor classes are crated
 
 	singleton=this;
+	last_checked_version=0;
+	changing_scene=false;
 
 	FileAccess::set_backup_save(true);
 
@@ -3841,14 +4132,38 @@ EditorNode::EditorNode() {
 	gui_base->set_anchor( MARGIN_RIGHT, Control::ANCHOR_END );
 	gui_base->set_anchor( MARGIN_BOTTOM, Control::ANCHOR_END );
 	gui_base->set_end( Point2(0,0) );
-	
+
 	main_vbox = memnew( VBoxContainer );
 	gui_base->add_child(main_vbox);
 	main_vbox->set_area_as_parent_rect(8);
 
+	PanelContainer *top_dark_panel = memnew( PanelContainer );
+	Ref<StyleBoxTexture> top_dark_sb;
+	top_dark_sb.instance();;
+	top_dark_sb->set_texture(theme->get_icon("PanelTop","EditorIcons"));
+	for(int i=0;i<4;i++) {
+		top_dark_sb->set_margin_size(Margin(i),3);
+		top_dark_sb->set_default_margin(Margin(i),0);
+	}
+	top_dark_sb->set_expand_margin_size(MARGIN_LEFT,20);
+	top_dark_sb->set_expand_margin_size(MARGIN_RIGHT,20);
+
+	top_dark_panel->add_style_override("panel",top_dark_sb);
+	VBoxContainer *top_dark_vb = memnew( VBoxContainer );
+	main_vbox->add_child(top_dark_panel);
+	top_dark_panel->add_child(top_dark_vb);
+
+
+
+
 	menu_hb = memnew( HBoxContainer );
-	main_vbox->add_child(menu_hb);
+	top_dark_vb->add_child(menu_hb);
 
+	scene_tabs=memnew( Tabs );
+	scene_tabs->add_tab("unsaved");
+	scene_tabs->set_tab_align(Tabs::ALIGN_CENTER);
+	scene_tabs->connect("tab_changed",this,"_scene_tab_changed");
+	top_dark_vb->add_child(scene_tabs);
 	//left
 	left_l_hsplit = memnew( HSplitContainer );
 	main_vbox->add_child(left_l_hsplit);
@@ -3912,6 +4227,12 @@ EditorNode::EditorNode() {
 	right_l_vsplit->connect("dragged",this,"_dock_split_dragged");
 	right_r_vsplit->connect("dragged",this,"_dock_split_dragged");
 
+	left_l_hsplit->connect("dragged",this,"_dock_split_dragged");
+	left_r_hsplit->connect("dragged",this,"_dock_split_dragged");
+	main_hsplit->connect("dragged",this,"_dock_split_dragged");
+	right_hsplit->connect("dragged",this,"_dock_split_dragged");
+
+
 
 	dock_select_popoup = memnew( PopupPanel );
 	gui_base->add_child(dock_select_popoup);
@@ -4101,7 +4422,9 @@ EditorNode::EditorNode() {
 	p->add_item("Save Scene",FILE_SAVE_SCENE,KEY_MASK_CMD+KEY_S);
 	p->add_item("Save Scene As..",FILE_SAVE_AS_SCENE,KEY_MASK_SHIFT+KEY_MASK_CMD+KEY_S);
 	p->add_separator();
-	p->add_item("Goto Prev. Scene",FILE_OPEN_PREV,KEY_MASK_SHIFT+KEY_MASK_CMD+KEY_P);
+	p->add_item("Close Scene",FILE_CLOSE,KEY_MASK_SHIFT+KEY_MASK_CTRL+KEY_W);
+	p->add_separator();
+	p->add_item("Close Goto Prev. Scene",FILE_OPEN_PREV,KEY_MASK_SHIFT+KEY_MASK_CMD+KEY_P);
 	p->add_submenu_item("Open Recent","RecentScenes",FILE_OPEN_RECENT);
 	p->add_separator();
 	p->add_item("Quick Open Scene..",FILE_QUICK_OPEN_SCENE,KEY_MASK_SHIFT+KEY_MASK_CMD+KEY_O);
@@ -4791,8 +5114,8 @@ EditorNode::EditorNode() {
 	}
 
 
-	edited_scene=NULL;
-	saved_version=0;
+	//edited_scene=NULL;
+	saved_version=1;
 	unsaved_cache=true;
 	_last_instanced_scene=NULL;
 
@@ -4854,7 +5177,13 @@ EditorNode::EditorNode() {
 	for(int i=0;i<_init_callbacks.size();i++)
 		_init_callbacks[i]();
 
+	editor_data.add_edited_scene(-1);
+	editor_data.set_edited_scene(0);
+	_update_scene_tabs();
+
 	_load_docks();
+
+
 }
 
 
diff --git a/tools/editor/editor_node.h b/tools/editor/editor_node.h
index 2ef9332c84..293da2031d 100644
--- a/tools/editor/editor_node.h
+++ b/tools/editor/editor_node.h
@@ -125,6 +125,7 @@ class EditorNode : public Node {
 		FILE_QUICK_OPEN_SCRIPT,
 		FILE_RUN_SCRIPT,
 		FILE_OPEN_PREV,
+		FILE_CLOSE,
 		FILE_QUIT,
 		FILE_EXTERNAL_OPEN_SCENE,
 		EDIT_UNDO,
@@ -183,16 +184,16 @@ class EditorNode : public Node {
 	};
 
 
-	Node *edited_scene; //scene being edited
+	//Node *edited_scene; //scene being edited
 	Viewport *scene_root; //root of the scene being edited
 
-	Ref<ResourceImportMetadata> scene_import_metadata;
+	//Ref<ResourceImportMetadata> scene_import_metadata;
 
 	Control* scene_root_parent;
 	Control *gui_base;
 	VBoxContainer *main_vbox;
 
-
+	//split
 
 	HSplitContainer *left_l_hsplit;
 	VSplitContainer *left_l_vsplit;
@@ -205,6 +206,9 @@ class EditorNode : public Node {
 
 	VSplitContainer *center_split;
 
+	//main tabs
+
+	Tabs *scene_tabs;
 
 
 	int old_split_ofs;
@@ -324,8 +328,10 @@ class EditorNode : public Node {
 	bool reference_resource_mem;
 	bool save_external_resources_mem;
 	uint64_t saved_version;
+	uint64_t last_checked_version;
 	bool unsaved_cache;
 	String open_navigate;
+	bool changing_scene;
 
 	uint32_t circle_step_msec;
 	uint64_t circle_step_frame;
@@ -375,6 +381,7 @@ class EditorNode : public Node {
 	void _set_scene_metadata();
 	void _get_scene_metadata();
 	void _update_title();
+	void _update_scene_tabs();
 	void _close_messages();
 	void _show_messages();
 	void _vp_resized();
@@ -402,7 +409,7 @@ class EditorNode : public Node {
 	void _add_to_recent_scenes(const String& p_scene);
 	void _update_recent_scenes();
 	void _open_recent_scene(int p_idx);
-	void _open_recent_scene_confirm();
+	//void _open_recent_scene_confirm();
 	String _recent_scene;
 
 	bool convert_old;
@@ -431,7 +438,7 @@ class EditorNode : public Node {
 
 
 	void _cleanup_scene();
-
+	void _remove_edited_scene();
 	bool _find_and_save_resource(RES p_res,Map<RES,bool>& processed,int32_t flags);
 	bool _find_and_save_edited_subresources(Object *obj,Map<RES,bool>& processed,int32_t flags);
 	void _save_edited_subresources(Node* scene,Map<RES,bool>& processed,int32_t flags);
@@ -461,6 +468,10 @@ class EditorNode : public Node {
 	void _dock_pre_popup(int p_which);
 	void _dock_split_dragged(int ofs);
 	void _dock_popup_exit();
+	void _scene_tab_changed(int p_tab);
+
+	Dictionary _get_main_scene_state();
+	void _set_main_scene_state(Dictionary p_state);
 
 	void _save_docks();
 	void _load_docks();
@@ -498,7 +509,7 @@ public:
 
 	void open_request(const String& p_path);
 
-	void set_edited_scene(Node *p_scene);
+	bool is_changing_scene() const;
 
 
 	static EditorLog *get_log() { return singleton->log; }
@@ -511,7 +522,9 @@ public:
 	void hide_animation_player_editors();
 	void animation_panel_make_visible(bool p_visible);
 
-	Node *get_edited_scene() { return edited_scene; }
+	void set_edited_scene(Node *p_scene);
+
+	Node *get_edited_scene() { return editor_data.get_edited_scene_root(); }
 
 	Viewport *get_scene_root() { return scene_root; } //root of the scene being edited
 	Error save_optimized_copy(const String& p_scene,const String& p_preset);
@@ -520,6 +533,9 @@ public:
 	Error load_scene(const String& p_scene);
 	Error load_resource(const String& p_scene);
 
+	void set_current_version(uint64_t p_version);
+	void set_current_scene(int p_idx);
+
 	static EditorData& get_editor_data() { return singleton->editor_data; }
 
 	static VSplitContainer *get_top_split() { return singleton->top_split; }
@@ -566,6 +582,9 @@ public:
 	bool is_scene_in_use(const String& p_path);
 
 	void scan_import_changes();
+
+	void save_layout();
+
 	EditorNode();	
 	~EditorNode();
 	void get_singleton(const char* arg1, bool arg2);
diff --git a/tools/editor/editor_plugin.cpp b/tools/editor/editor_plugin.cpp
index e6b8ee0993..04c34d9a88 100644
--- a/tools/editor/editor_plugin.cpp
+++ b/tools/editor/editor_plugin.cpp
@@ -197,6 +197,13 @@ bool EditorPlugin::get_remove_list(List<Node*> *p_list) {
 void EditorPlugin::restore_global_state() {}
 void EditorPlugin::save_global_state() {}
 
+void EditorPlugin::set_window_layout(Ref<ConfigFile> p_layout) {
+
+}
+
+void EditorPlugin::get_window_layout(Ref<ConfigFile> p_layout){
+
+}
 
 void EditorPlugin::_bind_methods() {
 
diff --git a/tools/editor/editor_plugin.h b/tools/editor/editor_plugin.h
index a9e6b1be49..0f3a1e2e3c 100644
--- a/tools/editor/editor_plugin.h
+++ b/tools/editor/editor_plugin.h
@@ -32,7 +32,7 @@
 #include "scene/main/node.h"
 #include "scene/resources/texture.h"
 #include "undo_redo.h"
-
+#include "io/config_file.h"
 /**
 	@author Juan Linietsky <reduzio@gmail.com>
 */
@@ -90,6 +90,8 @@ public:
 	virtual void apply_changes() ; // if changes are pending in editor, apply them
 	virtual void get_breakpoints(List<String> *p_breakpoints);
 	virtual bool get_remove_list(List<Node*> *p_list);
+	virtual void set_window_layout(Ref<ConfigFile> p_layout);
+	virtual void get_window_layout(Ref<ConfigFile> p_layout);
 
 	virtual void restore_global_state();
 	virtual void save_global_state();
diff --git a/tools/editor/editor_run_script.cpp b/tools/editor/editor_run_script.cpp
index 5f8598d052..90581374f6 100644
--- a/tools/editor/editor_run_script.cpp
+++ b/tools/editor/editor_run_script.cpp
@@ -18,7 +18,7 @@ void EditorScript::add_root_node(Node *p_node) {
 		return;
 	}
 
-	editor->set_edited_scene(p_node);
+//	editor->set_edited_scene(p_node);
 }
 
 Node *EditorScript::get_scene() {
diff --git a/tools/editor/editor_settings.cpp b/tools/editor/editor_settings.cpp
index 361a86b88e..0df9fcadef 100644
--- a/tools/editor/editor_settings.cpp
+++ b/tools/editor/editor_settings.cpp
@@ -433,9 +433,11 @@ void EditorSettings::_load_defaults() {
 	set("text_editor/idle_parse_delay",2);
 	set("text_editor/create_signal_callbacks",true);
 	set("text_editor/autosave_interval_secs",0);
+
 	set("text_editor/font","");
 	hints["text_editor/font"]=PropertyInfo(Variant::STRING,"text_editor/font",PROPERTY_HINT_GLOBAL_FILE,"*.fnt");
 	set("text_editor/auto_brace_complete", false);
+	set("text_editor/restore_scripts_on_load",true);
 
 
 	set("scenetree_editor/duplicate_node_name_num_separator",0);
diff --git a/tools/editor/icons/icon_panel_top.png b/tools/editor/icons/icon_panel_top.png
new file mode 100644
index 0000000000..20e67fad1a
--- /dev/null
+++ b/tools/editor/icons/icon_panel_top.png
diff --git a/tools/editor/io_plugins/editor_mesh_import_plugin.cpp b/tools/editor/io_plugins/editor_mesh_import_plugin.cpp
index 2e5a6f8a81..2139513025 100644
--- a/tools/editor/io_plugins/editor_mesh_import_plugin.cpp
+++ b/tools/editor/io_plugins/editor_mesh_import_plugin.cpp
@@ -105,7 +105,7 @@ public:
 	_EditorMeshImportOptions() {
 
 		generate_tangents=true;
-		generate_normals=true;
+		generate_normals=false;
 		flip_faces=false;
 		smooth_shading=false;
 		weld_vertices=true;
diff --git a/tools/editor/plugins/multimesh_editor_plugin.cpp b/tools/editor/plugins/multimesh_editor_plugin.cpp
index d858f3b896..0df906117e 100644
--- a/tools/editor/plugins/multimesh_editor_plugin.cpp
+++ b/tools/editor/plugins/multimesh_editor_plugin.cpp
@@ -305,7 +305,7 @@ void MultiMeshEditor::edit(MultiMeshInstance *p_multimesh) {
 void MultiMeshEditor::_browse(bool p_source) {
 
 	browsing_source=p_source;
-	std->get_tree()->set_marked(node,false);
+	std->get_scene_tree()->set_marked(node,false);
 	std->popup_centered_ratio();
 	if (p_source)
 		std->set_title("Select a Source Mesh:");
diff --git a/tools/editor/plugins/script_editor_plugin.cpp b/tools/editor/plugins/script_editor_plugin.cpp
index f5ba6a08e6..cf934b988d 100644
--- a/tools/editor/plugins/script_editor_plugin.cpp
+++ b/tools/editor/plugins/script_editor_plugin.cpp
@@ -38,10 +38,12 @@
 #include "os/file_access.h"
 #include "scene/main/viewport.h"
 #include "os/keyboard.h"
-/*** SCRIPT EDITOR ****/
+#include "os/input.h"
 
+/*** SCRIPT EDITOR ****/
 
 
+#define SORT_SCRIPT_LIST
 
 void ScriptEditorQuickOpen::popup(const Vector<String>& p_functions, bool p_dontclear) {
 
@@ -118,6 +120,8 @@ void ScriptEditorQuickOpen::_notification(int p_what) {
 	if (p_what==NOTIFICATION_ENTER_TREE) {
 
 		connect("confirmed",this,"_confirmed");
+
+
 	}
 }
 
@@ -296,12 +300,11 @@ void ScriptTextEditor::_notification(int p_what) {
 
 	if (p_what==NOTIFICATION_READY) {
 
-		_update_name();
+		//emit_signal("name_changed");
 	}
 }
 
-void ScriptTextEditor::_update_name() {
-
+String ScriptTextEditor::get_name()  {
 	String name;
 
 	if (script->get_path().find("local://")==-1 && script->get_path().find("::")==-1) {
@@ -314,21 +317,20 @@ void ScriptTextEditor::_update_name() {
 	else
 		name=script->get_type()+"("+itos(script->get_instance_ID())+")";
 
+	return name;
 
-	if (name!=String(get_name())) {
+}
 
-		set_name(name);
+Ref<Texture> ScriptTextEditor::get_icon() {
 
+	if (get_parent_control() && get_parent_control()->has_icon(script->get_type(),"EditorIcons")) {
+		return get_parent_control()->get_icon(script->get_type(),"EditorIcons");
 	}
 
-	if (!has_meta("_tab_icon")) {
-		if (get_parent_control() && get_parent_control()->has_icon(script->get_type(),"EditorIcons")) {
-			set_meta("_tab_icon",get_parent_control()->get_icon(script->get_type(),"EditorIcons"));
-		}
-	}
+	return Ref<Texture>();
+}
 
 
-}
 
 void ScriptTextEditor::set_edited_script(const Ref<Script>& p_script) {
 
@@ -344,8 +346,7 @@ void ScriptTextEditor::set_edited_script(const Ref<Script>& p_script) {
 	get_text_edit()->tag_saved_version();
 
 
-	_update_name();
-
+	emit_signal("name_changed");
 	_line_col_changed();
 }
 
@@ -384,7 +385,7 @@ void ScriptTextEditor::_validate_script() {
 		te->set_line_as_marked(i,line==i);
 	}
 
-	_update_name();
+	emit_signal("name_changed");
 }
 
 
@@ -418,6 +419,10 @@ void ScriptTextEditor::_code_complete_script(const String& p_code, List<String>*
 	}
 
 }
+void ScriptTextEditor::_bind_methods() {
+
+	ADD_SIGNAL(MethodInfo("name_changed"));
+}
 
 ScriptTextEditor::ScriptTextEditor() {
 
@@ -492,11 +497,15 @@ void ScriptEditor::_close_current_tab() {
 	memdelete(current);
 	if (idx>=tab_container->get_child_count())
 		idx=tab_container->get_child_count()-1;
-	if (idx>=0)
+	if (idx>=0) {
 		tab_container->set_current_tab(idx);
+		//script_list->select(idx);
+	}
+
 
-	_update_window_menu();
-	_save_files_state();
+
+	_update_script_names();
+	EditorNode::get_singleton()->save_layout();
 
 }
 
@@ -587,10 +596,10 @@ void ScriptEditor::_res_saved_callback(const Ref<Resource>& p_res) {
 			ste->get_text_edit()->tag_saved_version();
 		}
 
-		ste->_update_name();
-
 	}
 
+	_update_script_names();
+
 }
 
 bool ScriptEditor::_test_script_times_on_disk() {
@@ -1045,7 +1054,7 @@ void ScriptEditor::_menu_option(int p_option) {
 			if (text != "")
 				editor->emit_signal("request_help", text);
 		} break;
-		case WINDOW_CLOSE: {
+		case FILE_CLOSE: {
 			if (current->get_text_edit()->get_version()!=current->get_text_edit()->get_saved_version()) {
 				erase_tab_confirm->set_text("Close and save changes?\n\""+current->get_name()+"\"");
 				erase_tab_confirm->popup_centered_minsize();
@@ -1057,16 +1066,18 @@ void ScriptEditor::_menu_option(int p_option) {
 
 			if (tab_container->get_current_tab()>0) {
 				tab_container->call_deferred("set_current_tab",tab_container->get_current_tab()-1);
+				script_list->call_deferred("select",tab_container->get_current_tab()-1);
 				tab_container->move_child(current,tab_container->get_current_tab()-1);
-				_update_window_menu();
+				_update_script_names();
 			}
 		} break;
 		case WINDOW_MOVE_RIGHT: {
 
 			if (tab_container->get_current_tab()<tab_container->get_child_count()-1) {
 				tab_container->call_deferred("set_current_tab",tab_container->get_current_tab()+1);
+				script_list->call_deferred("select",tab_container->get_current_tab()+1);
 				tab_container->move_child(current,tab_container->get_current_tab()+1);
-				_update_window_menu();
+				_update_script_names();
 			}
 
 
@@ -1076,6 +1087,8 @@ void ScriptEditor::_menu_option(int p_option) {
 			if (p_option>=WINDOW_SELECT_BASE) {
 
 				tab_container->set_current_tab(p_option-WINDOW_SELECT_BASE);
+				script_list->select(p_option-WINDOW_SELECT_BASE);
+
 			}
 		}
 	}
@@ -1096,6 +1109,8 @@ void ScriptEditor::_notification(int p_what) {
 		editor->connect("stop_pressed",this,"_editor_stop");
 		editor->connect("script_add_function_request",this,"_add_callback");
 		editor->connect("resource_saved",this,"_res_saved_callback");
+		script_list->connect("item_selected",this,"_script_selected");
+		script_split->connect("dragged",this,"_script_split_dragged");
 		autosave_timer->connect("timeout",this,"_autosave_scripts");
 		{
 			float autosave_time = EditorSettings::get_singleton()->get("text_editor/autosave_interval_secs");
@@ -1113,7 +1128,8 @@ void ScriptEditor::_notification(int p_what) {
 	}
 
 	if (p_what==NOTIFICATION_READY) {
-		_update_window_menu();
+
+		get_tree()->connect("tree_changed",this,"_tree_changed");
 	}
 
 	if (p_what==NOTIFICATION_EXIT_TREE) {
@@ -1153,10 +1169,11 @@ static const Node * _find_node_with_script(const Node* p_node, const RefPtr & p_
 
 Dictionary ScriptEditor::get_state() const {
 
-	apply_scripts();
 
-	Dictionary state;
+//	apply_scripts();
 
+	Dictionary state;
+#if 0
 	Array paths;
 	int open=-1;
 
@@ -1189,12 +1206,12 @@ Dictionary ScriptEditor::get_state() const {
 	if (open!=-1)
 		state["current"]=open;
 
-
+#endif
 	return state;
 }
 void ScriptEditor::set_state(const Dictionary& p_state) {
 
-
+#if 0
 	print_line("attempt set state: "+String(Variant(p_state)));
 
 	if (!p_state.has("sources"))
@@ -1231,6 +1248,7 @@ void ScriptEditor::set_state(const Dictionary& p_state) {
 	if (p_state.has("current")) {
 		tab_container->set_current_tab(p_state["current"]);
 	}
+#endif
 
 }
 void ScriptEditor::clear() {
@@ -1254,68 +1272,17 @@ void ScriptEditor::clear() {
 	int idx = tab_container->get_current_tab();
 	if (idx>=tab_container->get_child_count())
 		idx=tab_container->get_child_count()-1;
-	if (idx>=0)
+	if (idx>=0) {
 		tab_container->set_current_tab(idx);
-
-	_update_window_menu();
-
-
-}
-
-void ScriptEditor::_save_files_state() {
-
-	return; //no thank you
-
-	String rpath="_open_scripts_"+Globals::get_singleton()->get_resource_path();
-	rpath=rpath.replace("\\","_-_");
-	rpath=rpath.replace("/","_-_");
-	rpath=rpath.replace(":","_");
-
-	Vector<String> scripts;
-
-	for(int i=0;i<tab_container->get_child_count();i++) {
-
-		ScriptTextEditor *ste = tab_container->get_child(i)->cast_to<ScriptTextEditor>();
-		if (!ste)
-			continue;
-
-
-		Ref<Script> script = ste->get_edited_script();
-		if (script->get_path()!="" && script->get_path().find("local://")==-1 && script->get_path().find("::")==-1) {
-
-
-			scripts.push_back(script->get_path());
-		}
+		script_list->select( script_list->find_metadata(idx) );
 	}
 
 
-	EditorSettings::get_singleton()->set(rpath,scripts);
-	EditorSettings::get_singleton()->save();
-
-}
-
-void ScriptEditor::_load_files_state() {
-	return;
-
-	String rpath="_open_scripts_"+Globals::get_singleton()->get_resource_path();
-	rpath=rpath.replace("\\","_-_");
-	rpath=rpath.replace("/","_-_");
-	rpath=rpath.replace(":","_");
 
-	if (EditorSettings::get_singleton()->has(rpath)) {
-
-		Vector<String> open_files=EditorSettings::get_singleton()->get("rpath");
-		for(int i=0;i<open_files.size();i++) {
-			Ref<Script> scr = ResourceLoader::load(open_files[i]);
-			if (!scr.is_valid())
-				continue;
-
-			editor->edit_resource(scr);
-		}
-	}
 
 }
 
+
 void ScriptEditor::get_breakpoints(List<String> *p_breakpoints) {
 
 	for(int i=0;i<tab_container->get_child_count();i++) {
@@ -1360,11 +1327,18 @@ void ScriptEditor::_bind_methods() {
 	ObjectTypeDB::bind_method("_get_debug_tooltip",&ScriptEditor::_get_debug_tooltip);
 	ObjectTypeDB::bind_method("_autosave_scripts",&ScriptEditor::_autosave_scripts);
 	ObjectTypeDB::bind_method("_editor_settings_changed",&ScriptEditor::_editor_settings_changed);
+	ObjectTypeDB::bind_method("_update_script_names",&ScriptEditor::_update_script_names);
+	ObjectTypeDB::bind_method("_tree_changed",&ScriptEditor::_tree_changed);
+	ObjectTypeDB::bind_method("_script_selected",&ScriptEditor::_script_selected);
+	ObjectTypeDB::bind_method("_script_split_dragged",&ScriptEditor::_script_split_dragged);
 }
 
 
 void ScriptEditor::ensure_focus_current() {
 
+	if (!is_inside_tree())
+		return;
+
 	int cidx = tab_container->get_current_tab();
 	if (cidx<0 || cidx>=tab_container->get_tab_count());
 	Control *c = tab_container->get_child(cidx)->cast_to<Control>();
@@ -1376,6 +1350,13 @@ void ScriptEditor::ensure_focus_current() {
 	ste->get_text_edit()->grab_focus();
 }
 
+void ScriptEditor::_script_selected(int p_idx) {
+
+	grab_focus_block = !Input::get_singleton()->is_mouse_button_pressed(1); //amazing hack, simply amazing
+	tab_container->set_current_tab(script_list->get_item_metadata(p_idx));
+	grab_focus_block=false;
+}
+
 void ScriptEditor::ensure_select_current() {
 
 
@@ -1386,8 +1367,66 @@ void ScriptEditor::ensure_select_current() {
 			return;
 		Ref<Script> script = ste->get_edited_script();
 
-		ste->get_text_edit()->grab_focus();
+		if (!grab_focus_block && is_inside_tree())
+			ste->get_text_edit()->grab_focus();
+	}
+
+
+}
+
+void ScriptEditor::_find_scripts(Node* p_base, Node* p_current, Set<Ref<Script> > &used) {
+	if (p_current!=p_base && p_current->get_owner()!=p_base)
+		return;
+
+	if (p_current->get_script_instance()) {
+		Ref<Script> scr = p_current->get_script();
+		if (scr.is_valid())
+			used.insert(scr);
+	}
+
+	for(int i=0;i<p_current->get_child_count();i++) {
+		_find_scripts(p_base,p_current->get_child(i),used);
+	}
+
+}
+
+
+void ScriptEditor::_update_script_names() {
+
+	waiting_update_names=false;
+	Set<Ref<Script> > used;
+	Node* edited = EditorNode::get_singleton()->get_edited_scene();
+	if (edited) {
+		_find_scripts(edited,edited,used);
+	}
+
+	script_list->clear();
+	for(int i=0;i<tab_container->get_child_count();i++) {
+
+		ScriptTextEditor *ste = tab_container->get_child(i)->cast_to<ScriptTextEditor>();
+		if (!ste)
+			continue;
+
+		String script = ste->get_name();
+		Ref<Texture> icon = ste->get_icon();
+		String path = ste->get_edited_script()->get_path();
+		script_list->add_item(script,icon);
+
+		int index = script_list->get_item_count()-1;
+
+		script_list->set_item_tooltip(index,path);
+		script_list->set_item_metadata(index,i);
+		if (used.has(ste->get_edited_script())) {
+
+			script_list->set_item_custom_bg_color(index,Color(88/255.0,88/255.0,60/255.0));
+		}
+		if (tab_container->get_current_tab()==index) {
+			script_list->select(index);
+		}
 	}
+
+	script_list->sort_items_by_text();
+
 }
 
 void ScriptEditor::edit(const Ref<Script>& p_script) {
@@ -1425,9 +1464,13 @@ void ScriptEditor::edit(const Ref<Script>& p_script) {
 
 		if (ste->get_edited_script()==p_script) {
 
-			if (tab_container->get_current_tab()!=i)
-				tab_container->set_current_tab(i);
-			ste->get_text_edit()->grab_focus();
+			if (!EditorNode::get_singleton()->is_changing_scene()) {
+				if (tab_container->get_current_tab()!=i) {
+					tab_container->set_current_tab(i);
+					script_list->select( script_list->find_metadata(i) );
+				}
+				ste->get_text_edit()->grab_focus();
+			}
 			return;
 		}
 	}
@@ -1440,9 +1483,13 @@ void ScriptEditor::edit(const Ref<Script>& p_script) {
 	tab_container->add_child(ste);
 	tab_container->set_current_tab(tab_container->get_tab_count()-1);
 
-	_update_window_menu();
-	_save_files_state();
 
+
+	_update_script_names();
+	ste->connect("name_changed",this,"_update_script_names");
+	if (!restoring_layout) {
+		EditorNode::get_singleton()->save_layout();
+	}
 }
 
 void ScriptEditor::save_external_data() {
@@ -1502,51 +1549,6 @@ void ScriptEditor::_editor_stop() {
 	debug_menu->get_popup()->set_item_disabled( debug_menu->get_popup()->get_item_index(DEBUG_CONTINUE), true );
 }
 
-void ScriptEditor::_update_window_menu() {
-
-	int idx=0;
-	for(int i=0;i<tab_container->get_child_count();i++) {
-
-		ScriptTextEditor *ste = tab_container->get_child(i)->cast_to<ScriptTextEditor>();
-		if (!ste)
-			continue;
-		idx++;
-	}
-
-	if (idx==0) {
-		window_menu->set_disabled(true);
-		edit_menu->set_disabled(true);
-		search_menu->set_disabled(true);
-		return;
-	} else {
-
-		window_menu->set_disabled(false);
-		edit_menu->set_disabled(false);
-		search_menu->set_disabled(false);
-	}
-
-	window_menu->get_popup()->clear();
-	window_menu->get_popup()->add_item("Close",WINDOW_CLOSE,KEY_MASK_CMD|KEY_W);
-	window_menu->get_popup()->add_separator();
-	window_menu->get_popup()->add_item("Move Left",WINDOW_MOVE_LEFT,KEY_MASK_CMD|KEY_MASK_ALT|KEY_LEFT);
-	window_menu->get_popup()->add_item("Move Right",WINDOW_MOVE_RIGHT,KEY_MASK_CMD|KEY_MASK_ALT|KEY_RIGHT);
-	window_menu->get_popup()->add_separator();
-
-	idx=0;
-	for(int i=0;i<tab_container->get_child_count();i++) {
-
-		ScriptTextEditor *ste = tab_container->get_child(i)->cast_to<ScriptTextEditor>();
-		if (!ste)
-			continue;
-		String n = ste->get_name();
-		uint32_t accel=0;
-		if (idx<9) {
-			accel=KEY_MASK_ALT|KEY_MASK_CMD|(KEY_1+idx);
-		}
-		window_menu->get_popup()->add_item(n,WINDOW_SELECT_BASE+idx,accel);
-		idx++;
-	}
-}
 
 void ScriptEditor::_add_callback(Object *p_obj, const String& p_function, const StringArray& p_args) {
 
@@ -1582,6 +1584,8 @@ void ScriptEditor::_add_callback(Object *p_obj, const String& p_function, const
 		ste->get_text_edit()->cursor_set_line(pos);
 		ste->get_text_edit()->cursor_set_column(1);
 
+		script_list->select( script_list->find_metadata(i) );
+
 		break;
 
 	}
@@ -1607,8 +1611,80 @@ void ScriptEditor::_autosave_scripts() {
 	save_external_data();
 }
 
+void ScriptEditor::_tree_changed() {
+
+	if (waiting_update_names)
+		return;
+
+	waiting_update_names=true;
+	call_deferred("_update_script_names");
+}
+
+void ScriptEditor::_script_split_dragged(float) {
+
+	EditorNode::get_singleton()->save_layout();
+}
+
+void ScriptEditor::set_window_layout(Ref<ConfigFile> p_layout) {
+
+	if (!bool(EDITOR_DEF("text_editor/restore_scripts_on_load",true))) {
+		return;
+	}
+
+	if (!p_layout->has_section_key("ScriptEditor","open_scripts"))
+		return;
+
+	Array scripts = p_layout->get_value("ScriptEditor","open_scripts");
+
+	restoring_layout=true;
+
+	for(int i=0;i<scripts.size();i++) {
+
+		String path = scripts[i];
+		Ref<Script> scr = ResourceLoader::load(path);
+		if (scr.is_valid()) {
+			edit(scr);
+		}
+	}
+
+	if (p_layout->has_section_key("ScriptEditor","split_offset")) {
+		script_split->set_split_offset(p_layout->get_value("ScriptEditor","split_offset"));
+	}
+
+
+	restoring_layout=false;
+
+}
+
+void ScriptEditor::get_window_layout(Ref<ConfigFile> p_layout) {
+
+	Array scripts;
+
+	for(int i=0;i<tab_container->get_child_count();i++) {
+
+		ScriptTextEditor *ste = tab_container->get_child(i)->cast_to<ScriptTextEditor>();
+		if (!ste)
+			continue;
+
+		String path = ste->get_edited_script()->get_path();
+		if (!path.is_resource_file())
+			continue;
+
+		scripts.push_back(path);
+
+	}
+
+	p_layout->set_value("ScriptEditor","open_scripts",scripts);
+	p_layout->set_value("ScriptEditor","split_offset",script_split->get_split_offset());
+
+}
+
+
+
 ScriptEditor::ScriptEditor(EditorNode *p_editor) {
 
+	restoring_layout=false;
+	waiting_update_names=false;
 	editor=p_editor;
 
 	menu_hb = memnew( HBoxContainer );
@@ -1618,17 +1694,31 @@ ScriptEditor::ScriptEditor(EditorNode *p_editor) {
 	add_child(v_split);
 	v_split->set_v_size_flags(SIZE_EXPAND_FILL);
 
+	script_split = memnew( HSplitContainer );
+	v_split->add_child(script_split);
+	script_split->set_v_size_flags(SIZE_EXPAND_FILL);
+
+	script_list = memnew( ItemList );
+	script_split->add_child(script_list);
+	script_list->set_custom_minimum_size(Size2(140,0));
+
 	tab_container = memnew( TabContainer );
-	v_split->add_child(tab_container);
-	tab_container->set_v_size_flags(SIZE_EXPAND_FILL);
+	tab_container->set_tabs_visible(false);
+	script_split->add_child(tab_container);
+
+
+	tab_container->set_h_size_flags(SIZE_EXPAND_FILL);
 
 	file_menu = memnew( MenuButton );
 	menu_hb->add_child(file_menu);
 	file_menu->set_text("File");
 	file_menu->get_popup()->add_item("Open",FILE_OPEN);
+	file_menu->get_popup()->add_separator();
 	file_menu->get_popup()->add_item("Save",FILE_SAVE,KEY_MASK_ALT|KEY_MASK_CMD|KEY_S);
 	file_menu->get_popup()->add_item("Save As..",FILE_SAVE_AS);
 	file_menu->get_popup()->add_item("Save All",FILE_SAVE_ALL,KEY_MASK_CMD|KEY_MASK_SHIFT|KEY_S);
+	file_menu->get_popup()->add_separator();
+	file_menu->get_popup()->add_item("Close",FILE_CLOSE,KEY_MASK_CMD|KEY_W);
 	file_menu->get_popup()->connect("item_pressed", this,"_menu_option");
 
 	edit_menu = memnew( MenuButton );
@@ -1690,6 +1780,7 @@ ScriptEditor::ScriptEditor(EditorNode *p_editor) {
 	debug_menu->get_popup()->set_item_disabled( debug_menu->get_popup()->get_item_index(DEBUG_CONTINUE), true );
 
 
+#if 0
 	window_menu = memnew( MenuButton );
 	menu_hb->add_child(window_menu);
 	window_menu->set_text("Window");
@@ -1700,6 +1791,8 @@ ScriptEditor::ScriptEditor(EditorNode *p_editor) {
 	window_menu->get_popup()->add_separator();
 	window_menu->get_popup()->connect("item_pressed", this,"_menu_option");
 
+#endif
+
 	help_menu = memnew( MenuButton );
 	menu_hb->add_child(help_menu);
 	help_menu->set_text("Help");
@@ -1762,6 +1855,8 @@ ScriptEditor::ScriptEditor(EditorNode *p_editor) {
 	autosave_timer->set_one_shot(false);
 	add_child(autosave_timer);
 
+	grab_focus_block=false;
+
 //	debugger_gui->hide();
 
 }
@@ -1826,20 +1921,24 @@ void ScriptEditorPlugin::apply_changes() {
 
 void ScriptEditorPlugin::restore_global_state() {
 
-	if (bool(EDITOR_DEF("text_editor/restore_scripts_on_load",true))) {
-		script_editor->_load_files_state();
-	}
 
 }
 
 void ScriptEditorPlugin::save_global_state() {
 
-	if (bool(EDITOR_DEF("text_editor/restore_scripts_on_load",true))) {
-		script_editor->_save_files_state();
-	}
+}
 
+void ScriptEditorPlugin::set_window_layout(Ref<ConfigFile> p_layout) {
+
+	script_editor->set_window_layout(p_layout);
 }
 
+void ScriptEditorPlugin::get_window_layout(Ref<ConfigFile> p_layout){
+
+	script_editor->get_window_layout(p_layout);
+}
+
+
 void ScriptEditorPlugin::get_breakpoints(List<String> *p_breakpoints) {
 
 
diff --git a/tools/editor/plugins/script_editor_plugin.h b/tools/editor/plugins/script_editor_plugin.h
index acfdd1e966..635db40c2f 100644
--- a/tools/editor/plugins/script_editor_plugin.h
+++ b/tools/editor/plugins/script_editor_plugin.h
@@ -38,7 +38,7 @@
 #include "script_language.h"
 #include "tools/editor/code_editor.h"
 #include "scene/gui/split_container.h"
-
+#include "scene/gui/item_list.h"
 
 class ScriptEditorQuickOpen : public ConfirmationDialog {
 
@@ -88,6 +88,7 @@ protected:
 	virtual void _code_complete_script(const String& p_code, List<String>* r_options);
 	virtual void _load_theme_settings();
 	void _notification(int p_what);
+	static void _bind_methods();
 
 
 public:
@@ -97,7 +98,8 @@ public:
 	Vector<String> get_functions() ;
 	void set_edited_script(const Ref<Script>& p_script);
 	void reload_text();
-	void _update_name();
+	String get_name() ;
+	Ref<Texture> get_icon() ;
 
 	ScriptTextEditor();
 
@@ -115,6 +117,7 @@ class ScriptEditor : public VBoxContainer {
 		FILE_SAVE,
 		FILE_SAVE_AS,
 		FILE_SAVE_ALL,
+		FILE_CLOSE,
 		EDIT_UNDO,
 		EDIT_REDO,
 		EDIT_CUT,
@@ -123,12 +126,12 @@ class ScriptEditor : public VBoxContainer {
 		EDIT_SELECT_ALL,
 		EDIT_COMPLETE,
 		EDIT_AUTO_INDENT,
-        EDIT_TOGGLE_COMMENT,
-        EDIT_MOVE_LINE_UP,
-        EDIT_MOVE_LINE_DOWN,
-        EDIT_INDENT_RIGHT,
-        EDIT_INDENT_LEFT,
-        EDIT_CLONE_DOWN,
+		EDIT_TOGGLE_COMMENT,
+		EDIT_MOVE_LINE_UP,
+		EDIT_MOVE_LINE_DOWN,
+		EDIT_INDENT_RIGHT,
+		EDIT_INDENT_LEFT,
+		EDIT_CLONE_DOWN,
 		SEARCH_FIND,
 		SEARCH_FIND_NEXT,
 		SEARCH_REPLACE,
@@ -140,8 +143,7 @@ class ScriptEditor : public VBoxContainer {
 		DEBUG_BREAK,
 		DEBUG_CONTINUE,
 		DEBUG_SHOW,
-		HELP_CONTEXTUAL,
-		WINDOW_CLOSE,
+		HELP_CONTEXTUAL,		
 		WINDOW_MOVE_LEFT,
 		WINDOW_MOVE_RIGHT,
 		WINDOW_SELECT_BASE=100
@@ -151,12 +153,13 @@ class ScriptEditor : public VBoxContainer {
 	MenuButton *file_menu;
 	MenuButton *edit_menu;
 	MenuButton *search_menu;
-	MenuButton *window_menu;
 	MenuButton *debug_menu;
 	MenuButton *help_menu;
 	Timer *autosave_timer;
 	uint64_t idle;
 
+	ItemList *script_list;
+	HSplitContainer *script_split;
 	TabContainer *tab_container;
 	FindReplaceDialog *find_replace_dialog;
 	GotoLineDialog *goto_line_dialog;
@@ -171,6 +174,8 @@ class ScriptEditor : public VBoxContainer {
 
 	VSplitContainer *v_split;
 
+	bool restoring_layout;
+
 	String _get_debug_tooltip(const String&p_text,Node *_ste);
 
 	void _resave_scripts(const String& p_str);
@@ -180,6 +185,8 @@ class ScriptEditor : public VBoxContainer {
 
 	void _close_current_tab();
 
+	bool grab_focus_block;
+
 	ScriptEditorQuickOpen *quick_open;
 
 
@@ -199,6 +206,18 @@ class ScriptEditor : public VBoxContainer {
 	void _editor_settings_changed();
 	void _autosave_scripts();
 
+	void _update_script_names();
+
+	void _script_selected(int p_idx);
+
+	void _find_scripts(Node* p_base, Node* p_current,Set<Ref<Script> >& used);
+
+	void _tree_changed();
+
+	void _script_split_dragged(float);
+
+	bool waiting_update_names;
+
 	static ScriptEditor *script_editor;
 protected:
 	void _notification(int p_what);
@@ -206,9 +225,6 @@ protected:
 public:
 
 	static ScriptEditor *get_singleton() { return script_editor; }
-	void _save_files_state();
-	void _load_files_state();
-
 
 	void ensure_focus_current();
 	void apply_scripts() const;
@@ -222,10 +238,13 @@ public:
 
 	void get_breakpoints(List<String> *p_breakpoints);
 
-    void swap_lines(TextEdit *tx, int line1, int line2);
+	void swap_lines(TextEdit *tx, int line1, int line2);
 
 	void save_external_data();
 
+	void set_window_layout(Ref<ConfigFile> p_layout);
+	void get_window_layout(Ref<ConfigFile> p_layout);
+
 	ScriptEditor(EditorNode *p_editor);
 };
 
@@ -254,6 +273,9 @@ public:
 	virtual void restore_global_state();
 	virtual void save_global_state();
 
+	virtual void set_window_layout(Ref<ConfigFile> p_layout);
+	virtual void get_window_layout(Ref<ConfigFile> p_layout);
+
 	virtual void get_breakpoints(List<String> *p_breakpoints);
 
 
diff --git a/tools/editor/property_editor.cpp b/tools/editor/property_editor.cpp
index a7636f517f..2fa8b98ff1 100644
--- a/tools/editor/property_editor.cpp
+++ b/tools/editor/property_editor.cpp
@@ -1633,7 +1633,7 @@ CustomPropertyEditor::CustomPropertyEditor() {
 	scene_tree = memnew( SceneTreeDialog );
 	add_child(scene_tree);
 	scene_tree->connect("selected", this,"_node_path_selected");
-	scene_tree->get_tree()->set_show_enabled_subscene(true);
+	scene_tree->get_scene_tree()->set_show_enabled_subscene(true);
 
 	texture_preview = memnew( TextureFrame );
 	add_child( texture_preview);
diff --git a/tools/editor/scene_tree_dock.h b/tools/editor/scene_tree_dock.h
index 4baa4ef37b..f0bbbad6be 100644
--- a/tools/editor/scene_tree_dock.h
+++ b/tools/editor/scene_tree_dock.h
@@ -134,6 +134,7 @@ public:
 	void set_selected(Node *p_node, bool p_emit_selected=false);
 	void fill_path_renames(Node* p_node, Node *p_new_parent, List<Pair<NodePath,NodePath> > *p_renames);
 	void perform_node_renames(Node* p_base,List<Pair<NodePath,NodePath> > *p_renames, Map<Ref<Animation>, Set<int> > *r_rem_anims=NULL);
+	SceneTreeEditor *get_tree_editor() { return scene_tree; }
 
 	SceneTreeDock(EditorNode *p_editor,Node *p_scene_root,EditorSelection *p_editor_selection,EditorData &p_editor_data);
 };
diff --git a/tools/editor/scene_tree_editor.h b/tools/editor/scene_tree_editor.h
index 3e57ffb497..b05a52a2da 100644
--- a/tools/editor/scene_tree_editor.h
+++ b/tools/editor/scene_tree_editor.h
@@ -125,6 +125,9 @@ public:
 
 	void update_tree() { _update_tree(); }
 
+
+	Tree* get_scene_tree() { return tree; }
+
 	SceneTreeEditor(bool p_label=true,bool p_can_rename=false, bool p_can_open_instance=false);
 	~SceneTreeEditor();
 
@@ -150,7 +153,7 @@ protected:
 	static void _bind_methods();
 public:
 
-	SceneTreeEditor *get_tree() { return tree; }
+	SceneTreeEditor *get_scene_tree() { return tree; }
 	SceneTreeDialog();
 	~SceneTreeDialog();