Merge pull request #19225 from Paulb23/open_all_files_in_script_editor

Open all files in script editor

editor/code_editor.cpp

@@ -784,6 +784,345 @@ void CodeTextEditor::update_editor_settings() {
 	text_editor->set_v_scroll_speed(EditorSettings::get_singleton()->get("text_editor/open_scripts/v_scroll_speed"));
 }
 
+void CodeTextEditor::trim_trailing_whitespace() {
+	bool trimed_whitespace = false;
+	for (int i = 0; i < text_editor->get_line_count(); i++) {
+		String line = text_editor->get_line(i);
+		if (line.ends_with(" ") || line.ends_with("\t")) {
+
+			if (!trimed_whitespace) {
+				text_editor->begin_complex_operation();
+				trimed_whitespace = true;
+			}
+
+			int end = 0;
+			for (int j = line.length() - 1; j > -1; j--) {
+				if (line[j] != ' ' && line[j] != '\t') {
+					end = j + 1;
+					break;
+				}
+			}
+			text_editor->set_line(i, line.substr(0, end));
+		}
+	}
+
+	if (trimed_whitespace) {
+		text_editor->end_complex_operation();
+		text_editor->update();
+	}
+}
+
+void CodeTextEditor::convert_indent_to_spaces() {
+	int indent_size = EditorSettings::get_singleton()->get("text_editor/indent/size");
+	String indent = "";
+
+	for (int i = 0; i < indent_size; i++) {
+		indent += " ";
+	}
+
+	int cursor_line = text_editor->cursor_get_line();
+	int cursor_column = text_editor->cursor_get_column();
+
+	bool changed_indentation = false;
+	for (int i = 0; i < text_editor->get_line_count(); i++) {
+		String line = text_editor->get_line(i);
+
+		if (line.length() <= 0) {
+			continue;
+		}
+
+		int j = 0;
+		while (j < line.length() && (line[j] == ' ' || line[j] == '\t')) {
+			if (line[j] == '\t') {
+				if (!changed_indentation) {
+					text_editor->begin_complex_operation();
+					changed_indentation = true;
+				}
+				if (cursor_line == i && cursor_column > j) {
+					cursor_column += indent_size - 1;
+				}
+				line = line.left(j) + indent + line.right(j + 1);
+			}
+			j++;
+		}
+		if (changed_indentation) {
+			text_editor->set_line(i, line);
+		}
+	}
+	if (changed_indentation) {
+		text_editor->cursor_set_column(cursor_column);
+		text_editor->end_complex_operation();
+		text_editor->update();
+	}
+}
+
+void CodeTextEditor::convert_indent_to_tabs() {
+	int indent_size = EditorSettings::get_singleton()->get("text_editor/indent/size");
+	indent_size -= 1;
+
+	int cursor_line = text_editor->cursor_get_line();
+	int cursor_column = text_editor->cursor_get_column();
+
+	bool changed_indentation = false;
+	for (int i = 0; i < text_editor->get_line_count(); i++) {
+		String line = text_editor->get_line(i);
+
+		if (line.length() <= 0) {
+			continue;
+		}
+
+		int j = 0;
+		int space_count = -1;
+		while (j < line.length() && (line[j] == ' ' || line[j] == '\t')) {
+			if (line[j] != '\t') {
+				space_count++;
+
+				if (space_count == indent_size) {
+					if (!changed_indentation) {
+						text_editor->begin_complex_operation();
+						changed_indentation = true;
+					}
+					if (cursor_line == i && cursor_column > j) {
+						cursor_column -= indent_size;
+					}
+					line = line.left(j - indent_size) + "\t" + line.right(j + 1);
+					j = 0;
+					space_count = -1;
+				}
+			} else {
+				space_count = -1;
+			}
+			j++;
+		}
+		if (changed_indentation) {
+			text_editor->set_line(i, line);
+		}
+	}
+	if (changed_indentation) {
+		text_editor->cursor_set_column(cursor_column);
+		text_editor->end_complex_operation();
+		text_editor->update();
+	}
+}
+
+void CodeTextEditor::convert_case(CaseStyle p_case) {
+	if (!text_editor->is_selection_active()) {
+		return;
+	}
+
+	text_editor->begin_complex_operation();
+
+	int begin = text_editor->get_selection_from_line();
+	int end = text_editor->get_selection_to_line();
+	int begin_col = text_editor->get_selection_from_column();
+	int end_col = text_editor->get_selection_to_column();
+
+	for (int i = begin; i <= end; i++) {
+		int len = text_editor->get_line(i).length();
+		if (i == end)
+			len -= len - end_col;
+		if (i == begin)
+			len -= begin_col;
+		String new_line = text_editor->get_line(i).substr(i == begin ? begin_col : 0, len);
+
+		switch (p_case) {
+			case UPPER: {
+				new_line = new_line.to_upper();
+			} break;
+			case LOWER: {
+				new_line = new_line.to_lower();
+			} break;
+			case CAPITALIZE: {
+				new_line = new_line.capitalize();
+			} break;
+		}
+
+		if (i == begin) {
+			new_line = text_editor->get_line(i).left(begin_col) + new_line;
+		}
+		if (i == end) {
+			new_line = new_line + text_editor->get_line(i).right(end_col);
+		}
+		text_editor->set_line(i, new_line);
+	}
+	text_editor->end_complex_operation();
+}
+
+void CodeTextEditor::move_lines_up() {
+	text_editor->begin_complex_operation();
+	if (text_editor->is_selection_active()) {
+		int from_line = text_editor->get_selection_from_line();
+		int from_col = text_editor->get_selection_from_column();
+		int to_line = text_editor->get_selection_to_line();
+		int to_column = text_editor->get_selection_to_column();
+
+		for (int i = from_line; i <= to_line; i++) {
+			int line_id = i;
+			int next_id = i - 1;
+
+			if (line_id == 0 || next_id < 0)
+				return;
+
+			text_editor->unfold_line(line_id);
+			text_editor->unfold_line(next_id);
+
+			text_editor->swap_lines(line_id, next_id);
+			text_editor->cursor_set_line(next_id);
+		}
+		int from_line_up = from_line > 0 ? from_line - 1 : from_line;
+		int to_line_up = to_line > 0 ? to_line - 1 : to_line;
+		text_editor->select(from_line_up, from_col, to_line_up, to_column);
+	} else {
+		int line_id = text_editor->cursor_get_line();
+		int next_id = line_id - 1;
+
+		if (line_id == 0 || next_id < 0)
+			return;
+
+		text_editor->unfold_line(line_id);
+		text_editor->unfold_line(next_id);
+
+		text_editor->swap_lines(line_id, next_id);
+		text_editor->cursor_set_line(next_id);
+	}
+	text_editor->end_complex_operation();
+	text_editor->update();
+}
+
+void CodeTextEditor::move_lines_down() {
+	text_editor->begin_complex_operation();
+	if (text_editor->is_selection_active()) {
+		int from_line = text_editor->get_selection_from_line();
+		int from_col = text_editor->get_selection_from_column();
+		int to_line = text_editor->get_selection_to_line();
+		int to_column = text_editor->get_selection_to_column();
+
+		for (int i = to_line; i >= from_line; i--) {
+			int line_id = i;
+			int next_id = i + 1;
+
+			if (line_id == text_editor->get_line_count() - 1 || next_id > text_editor->get_line_count())
+				return;
+
+			text_editor->unfold_line(line_id);
+			text_editor->unfold_line(next_id);
+
+			text_editor->swap_lines(line_id, next_id);
+			text_editor->cursor_set_line(next_id);
+		}
+		int from_line_down = from_line < text_editor->get_line_count() ? from_line + 1 : from_line;
+		int to_line_down = to_line < text_editor->get_line_count() ? to_line + 1 : to_line;
+		text_editor->select(from_line_down, from_col, to_line_down, to_column);
+	} else {
+		int line_id = text_editor->cursor_get_line();
+		int next_id = line_id + 1;
+
+		if (line_id == text_editor->get_line_count() - 1 || next_id > text_editor->get_line_count())
+			return;
+
+		text_editor->unfold_line(line_id);
+		text_editor->unfold_line(next_id);
+
+		text_editor->swap_lines(line_id, next_id);
+		text_editor->cursor_set_line(next_id);
+	}
+	text_editor->end_complex_operation();
+	text_editor->update();
+}
+
+void CodeTextEditor::delete_lines() {
+	text_editor->begin_complex_operation();
+	if (text_editor->is_selection_active()) {
+		int to_line = text_editor->get_selection_to_line();
+		int from_line = text_editor->get_selection_from_line();
+		int count = Math::abs(to_line - from_line) + 1;
+		while (count) {
+			text_editor->set_line(text_editor->cursor_get_line(), "");
+			text_editor->backspace_at_cursor();
+			count--;
+			if (count)
+				text_editor->unfold_line(from_line);
+		}
+		text_editor->cursor_set_line(from_line - 1);
+		text_editor->deselect();
+	} else {
+		int line = text_editor->cursor_get_line();
+		text_editor->set_line(text_editor->cursor_get_line(), "");
+		text_editor->backspace_at_cursor();
+		text_editor->unfold_line(line);
+		text_editor->cursor_set_line(line);
+	}
+	text_editor->end_complex_operation();
+}
+
+void CodeTextEditor::code_lines_down() {
+	int from_line = text_editor->cursor_get_line();
+	int to_line = text_editor->cursor_get_line();
+	int column = text_editor->cursor_get_column();
+
+	if (text_editor->is_selection_active()) {
+		from_line = text_editor->get_selection_from_line();
+		to_line = text_editor->get_selection_to_line();
+		column = text_editor->cursor_get_column();
+	}
+	int next_line = to_line + 1;
+
+	if (to_line >= text_editor->get_line_count() - 1) {
+		text_editor->set_line(to_line, text_editor->get_line(to_line) + "\n");
+	}
+
+	text_editor->begin_complex_operation();
+	for (int i = from_line; i <= to_line; i++) {
+
+		text_editor->unfold_line(i);
+		if (i >= text_editor->get_line_count() - 1) {
+			text_editor->set_line(i, text_editor->get_line(i) + "\n");
+		}
+		String line_clone = text_editor->get_line(i);
+		text_editor->insert_at(line_clone, next_line);
+		next_line++;
+	}
+
+	text_editor->cursor_set_column(column);
+	if (text_editor->is_selection_active()) {
+		text_editor->select(to_line + 1, text_editor->get_selection_from_column(), next_line - 1, text_editor->get_selection_to_column());
+	}
+
+	text_editor->end_complex_operation();
+	text_editor->update();
+}
+
+void CodeTextEditor::goto_line(int p_line) {
+	text_editor->deselect();
+	text_editor->unfold_line(p_line);
+	text_editor->call_deferred("cursor_set_line", p_line);
+}
+
+void CodeTextEditor::goto_line_selection(int p_line, int p_begin, int p_end) {
+	text_editor->unfold_line(p_line);
+	text_editor->call_deferred("cursor_set_line", p_line);
+	text_editor->call_deferred("cursor_set_column", p_begin);
+	text_editor->select(p_line, p_begin, p_line, p_end);
+}
+
+Variant CodeTextEditor::get_edit_state() {
+	Dictionary state;
+
+	state["scroll_position"] = text_editor->get_v_scroll();
+	state["column"] = text_editor->cursor_get_column();
+	state["row"] = text_editor->cursor_get_line();
+
+	return state;
+}
+
+void CodeTextEditor::set_edit_state(const Variant &p_state) {
+	Dictionary state = p_state;
+	text_editor->cursor_set_column(state["column"]);
+	text_editor->cursor_set_line(state["row"]);
+	text_editor->set_v_scroll(state["scroll_position"]);
+	text_editor->grab_focus();
+}
+
 void CodeTextEditor::set_error(const String &p_error) {
 
 	error->set_text(p_error);

editor/code_editor.h

@@ -186,6 +186,29 @@ protected:
 	static void _bind_methods();
 
 public:
+	void trim_trailing_whitespace();
+
+	void convert_indent_to_spaces();
+	void convert_indent_to_tabs();
+
+	enum CaseStyle {
+		UPPER,
+		LOWER,
+		CAPITALIZE,
+	};
+	void convert_case(CaseStyle p_case);
+
+	void move_lines_up();
+	void move_lines_down();
+	void delete_lines();
+	void code_lines_down();
+
+	void goto_line(int p_line);
+	void goto_line_selection(int p_line, int p_begin, int p_end);
+
+	Variant get_edit_state();
+	void set_edit_state(const Variant &p_state);
+
 	void update_editor_settings();
 	void set_error(const String &p_error);
 	void update_line_and_column() { _line_col_changed(); }

editor/editor_node.cpp

@@ -112,6 +112,7 @@
 #include "editor/plugins/sprite_editor_plugin.h"
 #include "editor/plugins/sprite_frames_editor_plugin.h"
 #include "editor/plugins/style_box_editor_plugin.h"
+#include "editor/plugins/text_editor.h"
 #include "editor/plugins/texture_editor_plugin.h"
 #include "editor/plugins/texture_region_editor_plugin.h"
 #include "editor/plugins/theme_editor_plugin.h"
@@ -5468,6 +5469,7 @@ EditorNode::EditorNode() {
 	EditorAudioBuses *audio_bus_editor = EditorAudioBuses::register_editor();
 
 	ScriptTextEditor::register_editor(); //register one for text scripts
+	TextEditor::register_editor();
 
 	if (StreamPeerSSL::is_available()) {
 		add_editor_plugin(memnew(AssetLibraryEditorPlugin(this)));

editor/inspector_dock.cpp

@@ -140,6 +140,7 @@ void InspectorDock::_load_resource(const String &p_type) {
 
 void InspectorDock::_resource_file_selected(String p_file) {
 	RES res = ResourceLoader::load(p_file);
+
 	if (res.is_null()) {
 		warning_dialog->get_ok()->set_text("Ugh");
 		warning_dialog->set_text(TTR("Failed to load resource."));

editor/plugins/script_editor_plugin.cpp

@@ -31,7 +31,6 @@
 #include "script_editor_plugin.h"
 
 #include "core/io/resource_loader.h"
-#include "core/io/resource_saver.h"
 #include "core/os/file_access.h"
 #include "core/os/input.h"
 #include "core/os/keyboard.h"
@@ -283,7 +282,6 @@ void ScriptEditor::_breaked(bool p_breaked, bool p_can_debug) {
 
 		ScriptEditorBase *se = Object::cast_to<ScriptEditorBase>(tab_container->get_child(i));
 		if (!se) {
-
 			continue;
 		}
 
@@ -402,7 +400,10 @@ void ScriptEditor::_go_to_tab(int p_idx) {
 		if (is_visible_in_tree())
 			Object::cast_to<ScriptEditorBase>(c)->ensure_focus();
 
-		notify_script_changed(Object::cast_to<ScriptEditorBase>(c)->get_edited_script());
+		Ref<Script> script = Object::cast_to<ScriptEditorBase>(c)->get_edited_resource();
+		if (script != NULL) {
+			notify_script_changed(script);
+		}
 	}
 	if (Object::cast_to<EditorHelp>(c)) {
 
@@ -482,12 +483,23 @@ void ScriptEditor::_open_recent_script(int p_idx) {
 	String path = rc[p_idx];
 	// if its not on disk its a help file or deleted
 	if (FileAccess::exists(path)) {
-		Ref<Script> script = ResourceLoader::load(path);
-		if (script.is_valid()) {
-			edit(script, true);
-			return;
+		List<String> extensions;
+		ResourceLoader::get_recognized_extensions_for_type("Script", &extensions);
+
+		if (extensions.find(path.get_extension())) {
+			Ref<Script> script = ResourceLoader::load(path);
+			if (script.is_valid()) {
+				edit(script, true);
+				return;
+			}
 		}
 
+		Error err;
+		Ref<TextFile> text_file = _load_text_file(path, &err);
+		if (text_file.is_valid()) {
+			edit(text_file, true);
+			return;
+		}
 		// if it's a path then its most likely a deleted file not help
 	} else if (!path.is_resource_file()) {
 		_help_class_open(path);
@@ -513,12 +525,17 @@ void ScriptEditor::_close_tab(int p_idx, bool p_save, bool p_history_back) {
 		return;
 
 	Node *tselected = tab_container->get_child(selected);
+
 	ScriptEditorBase *current = Object::cast_to<ScriptEditorBase>(tab_container->get_child(selected));
 	if (current) {
 		if (p_save) {
 			apply_scripts();
 		}
-		notify_script_close(current->get_edited_script());
+
+		Ref<Script> script = current->get_edited_resource();
+		if (script != NULL) {
+			notify_script_close(script);
+		}
 	}
 
 	// roll back to previous tab
@@ -589,7 +606,7 @@ void ScriptEditor::_close_docs_tab() {
 
 void ScriptEditor::_copy_script_path() {
 	ScriptEditorBase *se = _get_current_editor();
-	Ref<Script> script = se->get_edited_script();
+	RES script = se->get_edited_resource();
 	OS::get_singleton()->set_clipboard(script->get_path());
 }
 
@@ -655,7 +672,7 @@ void ScriptEditor::_resave_scripts(const String &p_str) {
 		if (!se)
 			continue;
 
-		Ref<Script> script = se->get_edited_script();
+		RES script = se->get_edited_resource();
 
 		if (script->get_path() == "" || script->get_path().find("local://") != -1 || script->get_path().find("::") != -1)
 			continue; //internal script, who cares
@@ -672,7 +689,14 @@ void ScriptEditor::_resave_scripts(const String &p_str) {
 			}
 		}
 
-		editor->save_resource(script);
+		Ref<TextFile> text_file = script;
+		if (text_file != NULL) {
+			se->apply_code();
+			_save_text_file(text_file, text_file->get_path());
+			break;
+		} else {
+			editor->save_resource(script);
+		}
 		se->tag_saved_version();
 	}
 
@@ -689,25 +713,37 @@ void ScriptEditor::_reload_scripts() {
 			continue;
 		}
 
-		Ref<Script> script = se->get_edited_script();
+		RES edited_res = se->get_edited_resource();
 
-		if (script->get_path() == "" || script->get_path().find("local://") != -1 || script->get_path().find("::") != -1) {
+		if (edited_res->get_path() == "" || edited_res->get_path().find("local://") != -1 || edited_res->get_path().find("::") != -1) {
 
 			continue; //internal script, who cares
 		}
 
-		uint64_t last_date = script->get_last_modified_time();
-		uint64_t date = FileAccess::get_modified_time(script->get_path());
+		uint64_t last_date = edited_res->get_last_modified_time();
+		uint64_t date = FileAccess::get_modified_time(edited_res->get_path());
 
 		if (last_date == date) {
 			continue;
 		}
 
-		Ref<Script> rel_script = ResourceLoader::load(script->get_path(), script->get_class(), true);
-		ERR_CONTINUE(!rel_script.is_valid());
-		script->set_source_code(rel_script->get_source_code());
-		script->set_last_modified_time(rel_script->get_last_modified_time());
-		script->reload();
+		Ref<Script> script = edited_res;
+		if (script != NULL) {
+			Ref<Script> rel_script = ResourceLoader::load(script->get_path(), script->get_class(), true);
+			ERR_CONTINUE(!rel_script.is_valid());
+			script->set_source_code(rel_script->get_source_code());
+			script->set_last_modified_time(rel_script->get_last_modified_time());
+			script->reload();
+		}
+
+		Ref<TextFile> text_file = edited_res;
+		if (text_file != NULL) {
+			Error err;
+			Ref<TextFile> rel_text_file = _load_text_file(text_file->get_path(), &err);
+			ERR_CONTINUE(!rel_text_file.is_valid());
+			text_file->set_text(rel_text_file->get_text());
+			text_file->set_last_modified_time(rel_text_file->get_last_modified_time());
+		}
 		se->reload_text();
 	}
 
@@ -725,7 +761,7 @@ void ScriptEditor::_res_saved_callback(const Ref<Resource> &p_res) {
 			continue;
 		}
 
-		Ref<Script> script = se->get_edited_script();
+		RES script = se->get_edited_resource();
 
 		if (script->get_path() == "" || script->get_path().find("local://") != -1 || script->get_path().find("::") != -1) {
 			continue; //internal script, who cares
@@ -750,7 +786,7 @@ void ScriptEditor::_live_auto_reload_running_scripts() {
 	debugger->reload_scripts();
 }
 
-bool ScriptEditor::_test_script_times_on_disk(Ref<Script> p_for_script) {
+bool ScriptEditor::_test_script_times_on_disk(RES p_for_script) {
 
 	disk_changed_list->clear();
 	TreeItem *r = disk_changed_list->create_item();
@@ -765,21 +801,20 @@ bool ScriptEditor::_test_script_times_on_disk(Ref<Script> p_for_script) {
 		ScriptEditorBase *se = Object::cast_to<ScriptEditorBase>(tab_container->get_child(i));
 		if (se) {
 
-			Ref<Script> script = se->get_edited_script();
-
-			if (p_for_script.is_valid() && p_for_script != script)
+			RES edited_res = se->get_edited_resource();
+			if (edited_res.is_valid() && p_for_script != edited_res)
 				continue;
 
-			if (script->get_path() == "" || script->get_path().find("local://") != -1 || script->get_path().find("::") != -1)
+			if (edited_res->get_path() == "" || edited_res->get_path().find("local://") != -1 || edited_res->get_path().find("::") != -1)
 				continue; //internal script, who cares
 
-			uint64_t last_date = script->get_last_modified_time();
-			uint64_t date = FileAccess::get_modified_time(script->get_path());
+			uint64_t last_date = edited_res->get_last_modified_time();
+			uint64_t date = FileAccess::get_modified_time(edited_res->get_path());
 
 			if (last_date != date) {
 
 				TreeItem *ti = disk_changed_list->create_item(r);
-				ti->set_text(0, script->get_path().get_file());
+				ti->set_text(0, edited_res->get_path().get_file());
 
 				if (!use_autoreload || se->is_unsaved()) {
 					need_ask = true;
@@ -804,6 +839,49 @@ bool ScriptEditor::_test_script_times_on_disk(Ref<Script> p_for_script) {
 void ScriptEditor::_file_dialog_action(String p_file) {
 
 	switch (file_dialog_option) {
+		case FILE_OPEN: {
+
+			List<String> extensions;
+			ResourceLoader::get_recognized_extensions_for_type("Script", &extensions);
+			if (extensions.find(p_file.get_extension())) {
+				Ref<Script> scr = ResourceLoader::load(p_file);
+				if (!scr.is_valid()) {
+					editor->show_warning(TTR("Error could not load file."), TTR("Error!"));
+					file_dialog_option = -1;
+					return;
+				}
+
+				edit(scr);
+				file_dialog_option = -1;
+				return;
+			}
+
+			Error error;
+			Ref<TextFile> text_file = _load_text_file(p_file, &error);
+			if (error != OK) {
+				editor->show_warning(TTR("Error could not load file."), TTR("Error!"));
+			}
+
+			if (text_file.is_valid()) {
+				edit(text_file);
+				file_dialog_option = -1;
+				return;
+			}
+		}
+		case FILE_SAVE_AS: {
+			ScriptEditorBase *current = _get_current_editor();
+
+			String path = ProjectSettings::get_singleton()->localize_path(p_file);
+			Error err = _save_text_file(current->get_edited_resource(), path);
+
+			if (err != OK) {
+				editor->show_accept(TTR("Error saving file!"), TTR("OK"));
+				return;
+			}
+
+			((Resource *)current->get_edited_resource().ptr())->set_path(path);
+			_update_script_names();
+		} break;
 		case THEME_SAVE_AS: {
 			if (!EditorSettings::get_singleton()->save_text_editor_theme_as(p_file)) {
 				editor->show_warning(TTR("Error while saving theme"), TTR("Error saving"));
@@ -823,7 +901,8 @@ Ref<Script> ScriptEditor::_get_current_script() {
 	ScriptEditorBase *current = _get_current_editor();
 
 	if (current) {
-		return current->get_edited_script();
+		Ref<Script> script = current->get_edited_resource();
+		return script != NULL ? script : NULL;
 	} else {
 		return NULL;
 	}
@@ -848,8 +927,19 @@ void ScriptEditor::_menu_option(int p_option) {
 			script_create_dialog->popup_centered(Size2(300, 300) * EDSCALE);
 		} break;
 		case FILE_OPEN: {
+			file_dialog->set_mode(EditorFileDialog::MODE_OPEN_FILE);
+			file_dialog->set_access(EditorFileDialog::ACCESS_FILESYSTEM);
+			file_dialog_option = FILE_OPEN;
 
-			editor->open_resource("Script");
+			List<String> extensions;
+			ResourceLoader::get_recognized_extensions_for_type("Script", &extensions);
+			file_dialog->clear_filters();
+			for (int i = 0; i < extensions.size(); i++) {
+				file_dialog->add_filter("*." + extensions[i] + " ; " + extensions[i].to_upper());
+			}
+
+			file_dialog->popup_centered_ratio();
+			file_dialog->set_title(TTR("Open File"));
 			return;
 		} break;
 		case FILE_SAVE_ALL: {
@@ -929,7 +1019,14 @@ void ScriptEditor::_menu_option(int p_option) {
 						current->convert_indent_to_tabs();
 					}
 				}
-				editor->save_resource(current->get_edited_script());
+
+				Ref<TextFile> text_file = current->get_edited_resource();
+				if (text_file != NULL) {
+					current->apply_code();
+					_save_text_file(text_file, text_file->get_path());
+					break;
+				}
+				editor->save_resource(current->get_edited_resource());
 
 			} break;
 			case FILE_SAVE_AS: {
@@ -943,8 +1040,25 @@ void ScriptEditor::_menu_option(int p_option) {
 						current->convert_indent_to_tabs();
 					}
 				}
-				editor->push_item(Object::cast_to<Object>(current->get_edited_script().ptr()));
-				editor->save_resource_as(current->get_edited_script());
+
+				Ref<TextFile> text_file = current->get_edited_resource();
+				if (text_file != NULL) {
+					file_dialog->set_mode(EditorFileDialog::MODE_SAVE_FILE);
+					file_dialog->set_access(EditorFileDialog::ACCESS_FILESYSTEM);
+					file_dialog_option = FILE_SAVE_AS;
+
+					List<String> extensions;
+					ResourceLoader::get_recognized_extensions_for_type("Script", &extensions);
+					file_dialog->clear_filters();
+					file_dialog->set_current_dir(text_file->get_path().get_base_dir());
+					file_dialog->set_current_file(text_file->get_path().get_file());
+					file_dialog->popup_centered_ratio();
+					file_dialog->set_title(TTR("Save File As..."));
+					break;
+				}
+
+				editor->push_item(Object::cast_to<Object>(current->get_edited_resource().ptr()));
+				editor->save_resource_as(current->get_edited_resource());
 
 			} break;
 
@@ -956,8 +1070,8 @@ void ScriptEditor::_menu_option(int p_option) {
 			} break;
 			case FILE_RUN: {
 
-				Ref<Script> scr = current->get_edited_script();
-				if (scr.is_null()) {
+				Ref<Script> scr = current->get_edited_resource();
+				if (scr == NULL || scr.is_null()) {
 					EditorNode::get_singleton()->show_warning("Can't obtain the script for running");
 					break;
 				}
@@ -1000,8 +1114,7 @@ void ScriptEditor::_menu_option(int p_option) {
 				_copy_script_path();
 			} break;
 			case SHOW_IN_FILE_SYSTEM: {
-				ScriptEditorBase *se = _get_current_editor();
-				Ref<Script> script = se->get_edited_script();
+				RES script = current->get_edited_resource();
 				FileSystemDock *file_system_dock = EditorNode::get_singleton()->get_filesystem_dock();
 				file_system_dock->navigate_to_path(script->get_path());
 				// Ensure that the FileSystem dock is visible.
@@ -1259,8 +1372,8 @@ void ScriptEditor::close_builtin_scripts_from_scene(const String &p_scene) {
 
 		if (se) {
 
-			Ref<Script> script = se->get_edited_script();
-			if (!script.is_valid())
+			Ref<Script> script = se->get_edited_resource();
+			if (script == NULL || !script.is_valid())
 				continue;
 
 			if (script->get_path().find("::") != -1 && script->get_path().begins_with(p_scene)) { //is an internal script and belongs to scene being closed
@@ -1307,9 +1420,13 @@ void ScriptEditor::get_breakpoints(List<String> *p_breakpoints) {
 		if (!se)
 			continue;
 
+		Ref<Script> script = se->get_edited_resource();
+		if (script == NULL) {
+			continue;
+		}
+
 		List<int> bpoints;
 		se->get_breakpoints(&bpoints);
-		Ref<Script> script = se->get_edited_script();
 		String base = script->get_path();
 		ERR_CONTINUE(base.begins_with("local://") || base == "");
 
@@ -1452,7 +1569,7 @@ void ScriptEditor::_update_members_overview() {
 		members_overview->set_item_metadata(i, functions[i].get_slice(":", 1).to_int() - 1);
 	}
 
-	String path = se->get_edited_script()->get_path();
+	String path = se->get_edited_resource()->get_path();
 	bool built_in = !path.is_resource_file();
 	String name = built_in ? path.get_file() : se->get_name();
 	filename->set_text(name);
@@ -1570,7 +1687,7 @@ void ScriptEditor::_update_script_names() {
 		if (se) {
 
 			Ref<Texture> icon = se->get_icon();
-			String path = se->get_edited_script()->get_path();
+			String path = se->get_edited_resource()->get_path();
 			bool built_in = !path.is_resource_file();
 			String name = built_in ? path.get_file() : se->get_name();
 
@@ -1579,7 +1696,7 @@ void ScriptEditor::_update_script_names() {
 			sd.name = name;
 			sd.tooltip = path;
 			sd.index = i;
-			sd.used = used.has(se->get_edited_script());
+			sd.used = used.has(se->get_edited_resource());
 			sd.category = 0;
 			sd.ref = se;
 
@@ -1681,11 +1798,65 @@ void ScriptEditor::_update_script_names() {
 	_update_script_colors();
 }
 
-bool ScriptEditor::edit(const Ref<Script> &p_script, int p_line, int p_col, bool p_grab_focus) {
+Ref<TextFile> ScriptEditor::_load_text_file(const String &p_path, Error *r_error) {
+	if (r_error) {
+		*r_error = ERR_FILE_CANT_OPEN;
+	}
 
-	if (p_script.is_null())
+	String local_path = ProjectSettings::get_singleton()->localize_path(p_path);
+	String path = ResourceLoader::path_remap(local_path);
+
+	TextFile *text_file = memnew(TextFile);
+	Ref<TextFile> text_res(text_file);
+	Error err = text_file->load_text(path);
+
+	if (err != OK) {
+		ERR_FAIL_COND_V(err != OK, RES());
+	}
+
+	text_file->set_file_path(local_path);
+	text_file->set_path(local_path, true);
+
+	if (r_error) {
+		*r_error = OK;
+	}
+
+	return text_res;
+}
+
+Error ScriptEditor::_save_text_file(Ref<TextFile> p_text_file, const String &p_path) {
+	Ref<TextFile> sqscr = p_text_file;
+	ERR_FAIL_COND_V(sqscr.is_null(), ERR_INVALID_PARAMETER);
+
+	String source = sqscr->get_text();
+
+	Error err;
+	FileAccess *file = FileAccess::open(p_path, FileAccess::WRITE, &err);
+
+	if (err) {
+
+		ERR_FAIL_COND_V(err, err);
+	}
+
+	file->store_string(source);
+	if (file->get_error() != OK && file->get_error() != ERR_FILE_EOF) {
+		memdelete(file);
+		return ERR_CANT_CREATE;
+	}
+	file->close();
+	memdelete(file);
+
+	_res_saved_callback(sqscr);
+	return OK;
+}
+
+bool ScriptEditor::edit(const RES &p_resource, int p_line, int p_col, bool p_grab_focus) {
+
+	if (p_resource.is_null())
 		return false;
 
+	Ref<Script> script = p_resource;
+
 	// refuse to open built-in if scene is not loaded
 
 	// see if already has it
@@ -1694,17 +1865,17 @@ bool ScriptEditor::edit(const Ref<Script> &p_script, int p_line, int p_col, bool
 
 	const bool should_open = open_dominant || !EditorNode::get_singleton()->is_changing_scene();
 
-	if (p_script->get_language()->overrides_external_editor()) {
+	if (script != NULL && script->get_language()->overrides_external_editor()) {
 		if (should_open) {
-			Error err = p_script->get_language()->open_in_external_editor(p_script, p_line >= 0 ? p_line : 0, p_col);
+			Error err = script->get_language()->open_in_external_editor(script, p_line >= 0 ? p_line : 0, p_col);
 			if (err != OK)
 				ERR_PRINT("Couldn't open script in the overridden external text editor");
 		}
 		return false;
 	}
 
-	if ((debugger->get_dump_stack_script() != p_script || debugger->get_debug_with_external_editor()) &&
-			p_script->get_path().is_resource_file() &&
+	if ((debugger->get_dump_stack_script() != p_resource || debugger->get_debug_with_external_editor()) &&
+			p_resource->get_path().is_resource_file() &&
 			bool(EditorSettings::get_singleton()->get("text_editor/external/use_external_editor"))) {
 
 		String path = EditorSettings::get_singleton()->get("text_editor/external/exec_path");
@@ -1714,7 +1885,7 @@ bool ScriptEditor::edit(const Ref<Script> &p_script, int p_line, int p_col, bool
 
 		if (flags.size()) {
 			String project_path = ProjectSettings::get_singleton()->get_resource_path();
-			String script_path = ProjectSettings::get_singleton()->globalize_path(p_script->get_path());
+			String script_path = ProjectSettings::get_singleton()->globalize_path(p_resource->get_path());
 
 			flags = flags.replacen("{line}", itos(p_line > 0 ? p_line : 0));
 			flags = flags.replacen("{col}", itos(p_col));
@@ -1762,7 +1933,7 @@ bool ScriptEditor::edit(const Ref<Script> &p_script, int p_line, int p_col, bool
 		if (!se)
 			continue;
 
-		if (se->get_edited_script() == p_script) {
+		if (se->get_edited_resource() == p_resource) {
 
 			if (should_open) {
 				if (tab_container->get_current_tab() != i) {
@@ -1784,7 +1955,7 @@ bool ScriptEditor::edit(const Ref<Script> &p_script, int p_line, int p_col, bool
 	ScriptEditorBase *se;
 
 	for (int i = script_editor_func_count - 1; i >= 0; i--) {
-		se = script_editor_funcs[i](p_script);
+		se = script_editor_funcs[i](p_resource);
 		if (se)
 			break;
 	}
@@ -1795,9 +1966,9 @@ bool ScriptEditor::edit(const Ref<Script> &p_script, int p_line, int p_col, bool
 		SyntaxHighlighter *highlighter = syntax_highlighters_funcs[i]();
 		se->add_syntax_highlighter(highlighter);
 
-		if (!highlighter_set) {
+		if (script != NULL && !highlighter_set) {
 			List<String> languages = highlighter->get_supported_languages();
-			if (languages.find(p_script->get_language()->get_name())) {
+			if (languages.find(script->get_language()->get_name())) {
 				se->set_syntax_highlighter(highlighter);
 				highlighter_set = true;
 			}
@@ -1805,7 +1976,7 @@ bool ScriptEditor::edit(const Ref<Script> &p_script, int p_line, int p_col, bool
 	}
 
 	tab_container->add_child(se);
-	se->set_edited_script(p_script);
+	se->set_edited_resource(p_resource);
 	se->set_tooltip_request_func("_get_debug_tooltip", this);
 	if (se->get_edit_menu()) {
 		se->get_edit_menu()->hide();
@@ -1829,14 +2000,14 @@ bool ScriptEditor::edit(const Ref<Script> &p_script, int p_line, int p_col, bool
 
 	//test for modification, maybe the script was not edited but was loaded
 
-	_test_script_times_on_disk(p_script);
-	_update_modified_scripts_for_external_editor(p_script);
+	_test_script_times_on_disk(p_resource);
+	_update_modified_scripts_for_external_editor(p_resource);
 
 	if (p_line >= 0)
 		se->goto_line(p_line - 1);
 
-	notify_script_changed(p_script);
-	_add_recent_script(p_script->get_path());
+	notify_script_changed(p_resource);
+	_add_recent_script(p_resource->get_path());
 	return true;
 }
 
@@ -1863,12 +2034,19 @@ void ScriptEditor::save_all_scripts() {
 		if (!se->is_unsaved())
 			continue;
 
-		Ref<Script> script = se->get_edited_script();
-		if (script.is_valid())
+		RES edited_res = se->get_edited_resource();
+		if (edited_res.is_valid()) {
 			se->apply_code();
+		}
 
-		if (script->get_path() != "" && script->get_path().find("local://") == -1 && script->get_path().find("::") == -1)
-			editor->save_resource(script); //external script, save it
+		if (edited_res->get_path() != "" && edited_res->get_path().find("local://") == -1 && edited_res->get_path().find("::") == -1) {
+			Ref<TextFile> text_file = edited_res;
+			if (text_file != NULL) {
+				_save_text_file(text_file, text_file->get_path());
+				continue;
+			}
+			editor->save_resource(edited_res); //external script, save it
+		}
 	}
 
 	_update_script_names();
@@ -1938,7 +2116,7 @@ void ScriptEditor::_add_callback(Object *p_obj, const String &p_function, const
 		ScriptEditorBase *se = Object::cast_to<ScriptEditorBase>(tab_container->get_child(i));
 		if (!se)
 			continue;
-		if (se->get_edited_script() != script)
+		if (se->get_edited_resource() != script)
 			continue;
 
 		se->add_callback(p_function, p_args);
@@ -2228,9 +2406,12 @@ void ScriptEditor::_make_script_list_context_menu() {
 		context_menu->add_shortcut(ED_GET_SHORTCUT("script_editor/close_other_tabs"), CLOSE_OTHER_TABS);
 		context_menu->add_separator();
 		context_menu->add_shortcut(ED_GET_SHORTCUT("script_editor/copy_path"), FILE_COPY_PATH);
-		context_menu->add_shortcut(ED_GET_SHORTCUT("script_editor/reload_script_soft"), FILE_TOOL_RELOAD_SOFT);
 		context_menu->add_shortcut(ED_GET_SHORTCUT("script_editor/show_in_file_system"), SHOW_IN_FILE_SYSTEM);
-		Ref<Script> scr = se->get_edited_script();
+	}
+
+	Ref<Script> scr = se->get_edited_resource();
+	if (scr != NULL) {
+		context_menu->add_shortcut(ED_GET_SHORTCUT("script_editor/reload_script_soft"), FILE_TOOL_RELOAD_SOFT);
 		if (!scr.is_null() && scr->is_tool()) {
 			context_menu->add_separator();
 			context_menu->add_shortcut(ED_GET_SHORTCUT("script_editor/run_file"), FILE_RUN);
@@ -2266,14 +2447,28 @@ void ScriptEditor::set_window_layout(Ref<ConfigFile> p_layout) {
 
 	restoring_layout = true;
 
+	List<String> extensions;
+	ResourceLoader::get_recognized_extensions_for_type("Script", &extensions);
+
 	for (int i = 0; i < scripts.size(); i++) {
 
 		String path = scripts[i];
 		if (!FileAccess::exists(path))
 			continue;
-		Ref<Script> scr = ResourceLoader::load(path);
-		if (scr.is_valid()) {
-			edit(scr);
+
+		if (extensions.find(path.get_extension())) {
+			Ref<Script> scr = ResourceLoader::load(path);
+			if (scr.is_valid()) {
+				edit(scr);
+				continue;
+			}
+		}
+
+		Error error;
+		Ref<TextFile> text_file = _load_text_file(path, &error);
+		if (error == OK && text_file.is_valid()) {
+			edit(text_file);
+			continue;
 		}
 	}
 
@@ -2309,7 +2504,7 @@ void ScriptEditor::get_window_layout(Ref<ConfigFile> p_layout) {
 		ScriptEditorBase *se = Object::cast_to<ScriptEditorBase>(tab_container->get_child(i));
 		if (se) {
 
-			String path = se->get_edited_script()->get_path();
+			String path = se->get_edited_resource()->get_path();
 			if (!path.is_resource_file())
 				continue;
 
@@ -2434,7 +2629,10 @@ void ScriptEditor::_update_history_pos(int p_new_pos) {
 		Object::cast_to<ScriptEditorBase>(n)->set_edit_state(history[history_pos].state);
 		Object::cast_to<ScriptEditorBase>(n)->ensure_focus();
 
-		notify_script_changed(Object::cast_to<ScriptEditorBase>(n)->get_edited_script());
+		Ref<Script> script = Object::cast_to<ScriptEditorBase>(n)->get_edited_resource();
+		if (script != NULL) {
+			notify_script_changed(script);
+		}
 	}
 
 	if (Object::cast_to<EditorHelp>(n)) {
@@ -2471,7 +2669,11 @@ Vector<Ref<Script> > ScriptEditor::get_open_scripts() const {
 		ScriptEditorBase *se = Object::cast_to<ScriptEditorBase>(tab_container->get_child(i));
 		if (!se)
 			continue;
-		out_scripts.push_back(se->get_edited_script());
+
+		Ref<Script> script = se->get_edited_resource();
+		if (script != NULL) {
+			out_scripts.push_back(script);
+		}
 	}
 
 	return out_scripts;
@@ -2517,6 +2719,14 @@ void ScriptEditor::_open_script_request(const String &p_path) {
 	Ref<Script> script = ResourceLoader::load(p_path);
 	if (script.is_valid()) {
 		script_editor->edit(script, false);
+		return;
+	}
+
+	Error err;
+	Ref<TextFile> text_file = script_editor->_load_text_file(p_path, &err);
+	if (text_file.is_valid()) {
+		script_editor->edit(text_file, false);
+		return;
 	}
 }
 
@@ -2550,7 +2760,7 @@ void ScriptEditor::_on_find_in_files_requested(String text) {
 
 void ScriptEditor::_on_find_in_files_result_selected(String fpath, int line_number, int begin, int end) {
 
-	Ref<Resource> res = ResourceLoader::load(fpath);
+	RES res = ResourceLoader::load(fpath);
 	edit(res);
 
 	ScriptEditorBase *seb = _get_current_editor();
@@ -2966,14 +3176,21 @@ ScriptEditor::~ScriptEditor() {
 
 void ScriptEditorPlugin::edit(Object *p_object) {
 
-	if (!Object::cast_to<Script>(p_object))
-		return;
+	if (Object::cast_to<Script>(p_object)) {
+		script_editor->edit(Object::cast_to<Script>(p_object));
+	}
 
-	script_editor->edit(Object::cast_to<Script>(p_object));
+	if (Object::cast_to<TextFile>(p_object)) {
+		script_editor->edit(Object::cast_to<TextFile>(p_object));
+	}
 }
 
 bool ScriptEditorPlugin::handles(Object *p_object) const {
 
+	if (Object::cast_to<TextFile>(p_object)) {
+		return true;
+	}
+
 	if (Object::cast_to<Script>(p_object)) {
 
 		bool valid = _can_open_in_editor(Object::cast_to<Script>(p_object));

editor/plugins/script_editor_plugin.h

@@ -43,6 +43,7 @@
 #include "scene/gui/tool_button.h"
 #include "scene/gui/tree.h"
 #include "scene/main/timer.h"
+#include "scene/resources/text_file.h"
 #include "script_language.h"
 
 class ScriptEditorQuickOpen : public ConfirmationDialog {
@@ -74,7 +75,7 @@ class ScriptEditorDebugger;
 
 class ScriptEditorBase : public VBoxContainer {
 
-	GDCLASS(ScriptEditorBase, VBoxContainer);
+	GDCLASS(ScriptEditorBase, VBoxContainer)
 
 protected:
 	static void _bind_methods();
@@ -84,9 +85,9 @@ public:
 	virtual void set_syntax_highlighter(SyntaxHighlighter *p_highlighter) = 0;
 
 	virtual void apply_code() = 0;
-	virtual Ref<Script> get_edited_script() const = 0;
+	virtual RES get_edited_resource() const = 0;
 	virtual Vector<String> get_functions() = 0;
-	virtual void set_edited_script(const Ref<Script> &p_script) = 0;
+	virtual void set_edited_resource(const RES &p_res) = 0;
 	virtual void reload_text() = 0;
 	virtual String get_name() = 0;
 	virtual Ref<Texture> get_icon() = 0;
@@ -99,7 +100,7 @@ public:
 	virtual void convert_indent_to_tabs() = 0;
 	virtual void ensure_focus() = 0;
 	virtual void tag_saved_version() = 0;
-	virtual void reload(bool p_soft) = 0;
+	virtual void reload(bool p_soft) {}
 	virtual void get_breakpoints(List<int> *p_breakpoints) = 0;
 	virtual void add_callback(const String &p_function, PoolStringArray p_args) = 0;
 	virtual void update_settings() = 0;
@@ -116,7 +117,7 @@ public:
 };
 
 typedef SyntaxHighlighter *(*CreateSyntaxHighlighterFunc)();
-typedef ScriptEditorBase *(*CreateScriptEditorFunc)(const Ref<Script> &p_script);
+typedef ScriptEditorBase *(*CreateScriptEditorFunc)(const RES &p_resource);
 
 class EditorScriptCodeCompletionCache;
 class FindInFilesDialog;
@@ -268,7 +269,7 @@ class ScriptEditor : public PanelContainer {
 	void _resave_scripts(const String &p_str);
 	void _reload_scripts();
 
-	bool _test_script_times_on_disk(Ref<Script> p_for_script = Ref<Script>());
+	bool _test_script_times_on_disk(RES p_for_script = Ref<Resource>());
 
 	void _add_recent_script(String p_path);
 	void _update_recent_scripts();
@@ -378,6 +379,9 @@ class ScriptEditor : public PanelContainer {
 	Ref<Script> _get_current_script();
 	Array _get_open_scripts() const;
 
+	Ref<TextFile> _load_text_file(const String &p_path, Error *r_error);
+	Error _save_text_file(Ref<TextFile> p_text_file, const String &p_path);
+
 	void _on_find_in_files_requested(String text);
 	void _on_find_in_files_result_selected(String fpath, int line_number, int begin, int end);
 	void _start_find_in_files(bool with_replace);
@@ -400,8 +404,8 @@ public:
 
 	void ensure_select_current();
 
-	_FORCE_INLINE_ bool edit(const Ref<Script> &p_script, bool p_grab_focus = true) { return edit(p_script, -1, 0, p_grab_focus); }
-	bool edit(const Ref<Script> &p_script, int p_line, int p_col, bool p_grab_focus = true);
+	_FORCE_INLINE_ bool edit(const RES &p_resource, bool p_grab_focus = true) { return edit(p_resource, -1, 0, p_grab_focus); }
+	bool edit(const RES &p_resource, int p_line, int p_col, bool p_grab_focus = true);
 
 	void get_breakpoints(List<String> *p_breakpoints);
 

editor/plugins/script_text_editor.cpp

@@ -66,11 +66,24 @@ void ScriptTextEditor::apply_code() {
 	_update_member_keywords();
 }
 
-Ref<Script> ScriptTextEditor::get_edited_script() const {
-
+RES ScriptTextEditor::get_edited_resource() const {
 	return script;
 }
 
+void ScriptTextEditor::set_edited_resource(const RES &p_res) {
+	ERR_FAIL_COND(!script.is_null());
+
+	script = p_res;
+	_set_theme_for_script();
+
+	code_editor->get_text_edit()->set_text(script->get_source_code());
+	code_editor->get_text_edit()->clear_undo_history();
+	code_editor->get_text_edit()->tag_saved_version();
+
+	emit_signal("name_changed");
+	code_editor->update_line_and_column();
+}
+
 void ScriptTextEditor::_update_member_keywords() {
 	member_keywords.clear();
 	code_editor->get_text_edit()->clear_member_keywords();
@@ -190,6 +203,7 @@ void ScriptTextEditor::_set_theme_for_script() {
 
 	List<String> keywords;
 	script->get_language()->get_reserved_words(&keywords);
+
 	for (List<String>::Element *E = keywords.front(); E; E = E->next()) {
 
 		text_edit->add_keyword_color(E->get(), colors_cache.keyword_color);
@@ -251,7 +265,6 @@ void ScriptTextEditor::_set_theme_for_script() {
 	//colorize strings
 	List<String> strings;
 	script->get_language()->get_string_delimiters(&strings);
-
 	for (List<String>::Element *E = strings.front(); E; E = E->next()) {
 
 		String string = E->get();
@@ -326,197 +339,32 @@ bool ScriptTextEditor::is_unsaved() {
 
 Variant ScriptTextEditor::get_edit_state() {
 
-	Dictionary state;
-
-	state["scroll_position"] = code_editor->get_text_edit()->get_v_scroll();
-	state["column"] = code_editor->get_text_edit()->cursor_get_column();
-	state["row"] = code_editor->get_text_edit()->cursor_get_line();
-
-	return state;
+	return code_editor->get_edit_state();
 }
 
-void ScriptTextEditor::_convert_case(CaseStyle p_case) {
-	TextEdit *te = code_editor->get_text_edit();
-	Ref<Script> scr = get_edited_script();
-	if (scr.is_null()) {
-		return;
-	}
+void ScriptTextEditor::set_edit_state(const Variant &p_state) {
 
-	if (te->is_selection_active()) {
-		te->begin_complex_operation();
+	code_editor->set_edit_state(p_state);
+}
 
-		int begin = te->get_selection_from_line();
-		int end = te->get_selection_to_line();
-		int begin_col = te->get_selection_from_column();
-		int end_col = te->get_selection_to_column();
+void ScriptTextEditor::_convert_case(CodeTextEditor::CaseStyle p_case) {
 
-		for (int i = begin; i <= end; i++) {
-			int len = te->get_line(i).length();
-			if (i == end)
-				len -= len - end_col;
-			if (i == begin)
-				len -= begin_col;
-			String new_line = te->get_line(i).substr(i == begin ? begin_col : 0, len);
-
-			switch (p_case) {
-				case UPPER: {
-					new_line = new_line.to_upper();
-				} break;
-				case LOWER: {
-					new_line = new_line.to_lower();
-				} break;
-				case CAPITALIZE: {
-					new_line = new_line.capitalize();
-				} break;
-			}
-
-			if (i == begin) {
-				new_line = te->get_line(i).left(begin_col) + new_line;
-			}
-			if (i == end) {
-				new_line = new_line + te->get_line(i).right(end_col);
-			}
-			te->set_line(i, new_line);
-		}
-		te->end_complex_operation();
-	}
+	code_editor->convert_case(p_case);
 }
 
 void ScriptTextEditor::trim_trailing_whitespace() {
 
-	TextEdit *tx = code_editor->get_text_edit();
-
-	bool trimed_whitespace = false;
-	for (int i = 0; i < tx->get_line_count(); i++) {
-		String line = tx->get_line(i);
-		if (line.ends_with(" ") || line.ends_with("\t")) {
-
-			if (!trimed_whitespace) {
-				tx->begin_complex_operation();
-				trimed_whitespace = true;
-			}
-
-			int end = 0;
-			for (int j = line.length() - 1; j > -1; j--) {
-				if (line[j] != ' ' && line[j] != '\t') {
-					end = j + 1;
-					break;
-				}
-			}
-			tx->set_line(i, line.substr(0, end));
-		}
-	}
-	if (trimed_whitespace) {
-		tx->end_complex_operation();
-		tx->update();
-	}
+	code_editor->trim_trailing_whitespace();
 }
 
 void ScriptTextEditor::convert_indent_to_spaces() {
-	TextEdit *tx = code_editor->get_text_edit();
-	Ref<Script> scr = get_edited_script();
 
-	if (scr.is_null()) {
-		return;
-	}
-
-	int indent_size = EditorSettings::get_singleton()->get("text_editor/indent/size");
-	String indent = "";
-
-	for (int i = 0; i < indent_size; i++) {
-		indent += " ";
-	}
-
-	int cursor_line = tx->cursor_get_line();
-	int cursor_column = tx->cursor_get_column();
-
-	bool changed_indentation = false;
-	for (int i = 0; i < tx->get_line_count(); i++) {
-		String line = tx->get_line(i);
-
-		if (line.length() <= 0) {
-			continue;
-		}
-
-		int j = 0;
-		while (j < line.length() && (line[j] == ' ' || line[j] == '\t')) {
-			if (line[j] == '\t') {
-				if (!changed_indentation) {
-					tx->begin_complex_operation();
-					changed_indentation = true;
-				}
-				if (cursor_line == i && cursor_column > j) {
-					cursor_column += indent_size - 1;
-				}
-				line = line.left(j) + indent + line.right(j + 1);
-			}
-			j++;
-		}
-		if (changed_indentation) {
-			tx->set_line(i, line);
-		}
-	}
-	if (changed_indentation) {
-		tx->cursor_set_column(cursor_column);
-		tx->end_complex_operation();
-		tx->update();
-	}
+	code_editor->convert_indent_to_spaces();
 }
 
 void ScriptTextEditor::convert_indent_to_tabs() {
-	TextEdit *tx = code_editor->get_text_edit();
-	Ref<Script> scr = get_edited_script();
 
-	if (scr.is_null()) {
-		return;
-	}
-
-	int indent_size = EditorSettings::get_singleton()->get("text_editor/indent/size");
-	indent_size -= 1;
-
-	int cursor_line = tx->cursor_get_line();
-	int cursor_column = tx->cursor_get_column();
-
-	bool changed_indentation = false;
-	for (int i = 0; i < tx->get_line_count(); i++) {
-		String line = tx->get_line(i);
-
-		if (line.length() <= 0) {
-			continue;
-		}
-
-		int j = 0;
-		int space_count = -1;
-		while (j < line.length() && (line[j] == ' ' || line[j] == '\t')) {
-			if (line[j] != '\t') {
-				space_count++;
-
-				if (space_count == indent_size) {
-					if (!changed_indentation) {
-						tx->begin_complex_operation();
-						changed_indentation = true;
-					}
-					if (cursor_line == i && cursor_column > j) {
-						cursor_column -= indent_size;
-					}
-					line = line.left(j - indent_size) + "\t" + line.right(j + 1);
-					j = 0;
-					space_count = -1;
-				}
-			} else {
-				space_count = -1;
-			}
-			j++;
-		}
-		if (changed_indentation) {
-			tx->set_line(i, line);
-		}
-	}
-	if (changed_indentation) {
-		tx->cursor_set_column(cursor_column);
-		tx->end_complex_operation();
-		tx->update();
-	}
+	code_editor->convert_indent_to_tabs();
 }
 
 void ScriptTextEditor::tag_saved_version() {
@@ -525,18 +373,13 @@ void ScriptTextEditor::tag_saved_version() {
 }
 
 void ScriptTextEditor::goto_line(int p_line, bool p_with_error) {
-	TextEdit *tx = code_editor->get_text_edit();
-	tx->deselect();
-	tx->unfold_line(p_line);
-	tx->call_deferred("cursor_set_line", p_line);
+
+	code_editor->goto_line(p_line);
 }
 
 void ScriptTextEditor::goto_line_selection(int p_line, int p_begin, int p_end) {
-	TextEdit *tx = code_editor->get_text_edit();
-	tx->unfold_line(p_line);
-	tx->call_deferred("cursor_set_line", p_line);
-	tx->call_deferred("cursor_set_column", p_begin);
-	tx->select(p_line, p_begin, p_line, p_end);
+
+	code_editor->goto_line_selection(p_line, p_begin, p_end);
 }
 
 void ScriptTextEditor::ensure_focus() {
@@ -544,15 +387,6 @@ void ScriptTextEditor::ensure_focus() {
 	code_editor->get_text_edit()->grab_focus();
 }
 
-void ScriptTextEditor::set_edit_state(const Variant &p_state) {
-
-	Dictionary state = p_state;
-	code_editor->get_text_edit()->cursor_set_column(state["column"]);
-	code_editor->get_text_edit()->cursor_set_line(state["row"]);
-	code_editor->get_text_edit()->set_v_scroll(state["scroll_position"]);
-	code_editor->get_text_edit()->grab_focus();
-}
-
 String ScriptTextEditor::get_name() {
 	String name;
 
@@ -578,22 +412,6 @@ Ref<Texture> ScriptTextEditor::get_icon() {
 	return Ref<Texture>();
 }
 
-void ScriptTextEditor::set_edited_script(const Ref<Script> &p_script) {
-
-	ERR_FAIL_COND(!script.is_null());
-
-	script = p_script;
-	_set_theme_for_script();
-
-	code_editor->get_text_edit()->set_text(script->get_source_code());
-	code_editor->get_text_edit()->clear_undo_history();
-	code_editor->get_text_edit()->tag_saved_version();
-
-	emit_signal("name_changed");
-	code_editor->update_line_and_column();
-	call_deferred("_validate_script");
-}
-
 void ScriptTextEditor::_validate_script() {
 
 	String errortxt;
@@ -878,98 +696,15 @@ void ScriptTextEditor::_edit_option(int p_op) {
 		} break;
 		case EDIT_MOVE_LINE_UP: {
 
-			Ref<Script> scr = script;
-			if (scr.is_null())
-				return;
-
-			tx->begin_complex_operation();
-			if (tx->is_selection_active()) {
-				int from_line = tx->get_selection_from_line();
-				int from_col = tx->get_selection_from_column();
-				int to_line = tx->get_selection_to_line();
-				int to_column = tx->get_selection_to_column();
-
-				for (int i = from_line; i <= to_line; i++) {
-					int line_id = i;
-					int next_id = i - 1;
-
-					if (line_id == 0 || next_id < 0)
-						return;
-
-					tx->unfold_line(line_id);
-					tx->unfold_line(next_id);
-
-					tx->swap_lines(line_id, next_id);
-					tx->cursor_set_line(next_id);
-				}
-				int from_line_up = from_line > 0 ? from_line - 1 : from_line;
-				int to_line_up = to_line > 0 ? to_line - 1 : to_line;
-				tx->select(from_line_up, from_col, to_line_up, to_column);
-			} else {
-				int line_id = tx->cursor_get_line();
-				int next_id = line_id - 1;
-
-				if (line_id == 0 || next_id < 0)
-					return;
-
-				tx->unfold_line(line_id);
-				tx->unfold_line(next_id);
-
-				tx->swap_lines(line_id, next_id);
-				tx->cursor_set_line(next_id);
-			}
-			tx->end_complex_operation();
-			tx->update();
+			code_editor->move_lines_up();
 		} break;
 		case EDIT_MOVE_LINE_DOWN: {
 
-			Ref<Script> scr = get_edited_script();
-			if (scr.is_null())
-				return;
-
-			tx->begin_complex_operation();
-			if (tx->is_selection_active()) {
-				int from_line = tx->get_selection_from_line();
-				int from_col = tx->get_selection_from_column();
-				int to_line = tx->get_selection_to_line();
-				int to_column = tx->get_selection_to_column();
-
-				for (int i = to_line; i >= from_line; i--) {
-					int line_id = i;
-					int next_id = i + 1;
-
-					if (line_id == tx->get_line_count() - 1 || next_id > tx->get_line_count())
-						return;
-
-					tx->unfold_line(line_id);
-					tx->unfold_line(next_id);
-
-					tx->swap_lines(line_id, next_id);
-					tx->cursor_set_line(next_id);
-				}
-				int from_line_down = from_line < tx->get_line_count() ? from_line + 1 : from_line;
-				int to_line_down = to_line < tx->get_line_count() ? to_line + 1 : to_line;
-				tx->select(from_line_down, from_col, to_line_down, to_column);
-			} else {
-				int line_id = tx->cursor_get_line();
-				int next_id = line_id + 1;
-
-				if (line_id == tx->get_line_count() - 1 || next_id > tx->get_line_count())
-					return;
-
-				tx->unfold_line(line_id);
-				tx->unfold_line(next_id);
-
-				tx->swap_lines(line_id, next_id);
-				tx->cursor_set_line(next_id);
-			}
-			tx->end_complex_operation();
-			tx->update();
-
+			code_editor->move_lines_down();
 		} break;
 		case EDIT_INDENT_LEFT: {
 
-			Ref<Script> scr = get_edited_script();
+			Ref<Script> scr = script;
 			if (scr.is_null())
 				return;
 
@@ -977,7 +712,7 @@ void ScriptTextEditor::_edit_option(int p_op) {
 		} break;
 		case EDIT_INDENT_RIGHT: {
 
-			Ref<Script> scr = get_edited_script();
+			Ref<Script> scr = script;
 			if (scr.is_null())
 				return;
 
@@ -985,72 +720,11 @@ void ScriptTextEditor::_edit_option(int p_op) {
 		} break;
 		case EDIT_DELETE_LINE: {
 
-			Ref<Script> scr = get_edited_script();
-			if (scr.is_null())
-				return;
-			tx->begin_complex_operation();
-			if (tx->is_selection_active()) {
-				int to_line = tx->get_selection_to_line();
-				int from_line = tx->get_selection_from_line();
-				int count = Math::abs(to_line - from_line) + 1;
-				while (count) {
-					tx->set_line(tx->cursor_get_line(), "");
-					tx->backspace_at_cursor();
-					count--;
-					if (count)
-						tx->unfold_line(from_line);
-				}
-				tx->cursor_set_line(from_line - 1);
-				tx->deselect();
-			} else {
-				int line = tx->cursor_get_line();
-				tx->set_line(tx->cursor_get_line(), "");
-				tx->backspace_at_cursor();
-				tx->unfold_line(line);
-				tx->cursor_set_line(line);
-			}
-			tx->end_complex_operation();
+			code_editor->delete_lines();
 		} break;
 		case EDIT_CLONE_DOWN: {
 
-			Ref<Script> scr = get_edited_script();
-			if (scr.is_null())
-				return;
-
-			int from_line = tx->cursor_get_line();
-			int to_line = tx->cursor_get_line();
-			int column = tx->cursor_get_column();
-
-			if (tx->is_selection_active()) {
-				from_line = tx->get_selection_from_line();
-				to_line = tx->get_selection_to_line();
-				column = tx->cursor_get_column();
-			}
-			int next_line = to_line + 1;
-
-			if (to_line >= tx->get_line_count() - 1) {
-				tx->set_line(to_line, tx->get_line(to_line) + "\n");
-			}
-
-			tx->begin_complex_operation();
-			for (int i = from_line; i <= to_line; i++) {
-
-				tx->unfold_line(i);
-				if (i >= tx->get_line_count() - 1) {
-					tx->set_line(i, tx->get_line(i) + "\n");
-				}
-				String line_clone = tx->get_line(i);
-				tx->insert_at(line_clone, next_line);
-				next_line++;
-			}
-
-			tx->cursor_set_column(column);
-			if (tx->is_selection_active()) {
-				tx->select(to_line + 1, tx->get_selection_from_column(), next_line - 1, tx->get_selection_to_column());
-			}
-
-			tx->end_complex_operation();
-			tx->update();
+			code_editor->code_lines_down();
 		} break;
 		case EDIT_TOGGLE_FOLD_LINE: {
 
@@ -1069,7 +743,7 @@ void ScriptTextEditor::_edit_option(int p_op) {
 		} break;
 		case EDIT_TOGGLE_COMMENT: {
 
-			Ref<Script> scr = get_edited_script();
+			Ref<Script> scr = script;
 			if (scr.is_null())
 				return;
 
@@ -1137,7 +811,7 @@ void ScriptTextEditor::_edit_option(int p_op) {
 		case EDIT_AUTO_INDENT: {
 
 			String text = tx->get_text();
-			Ref<Script> scr = get_edited_script();
+			Ref<Script> scr = script;
 			if (scr.is_null())
 				return;
 
@@ -1180,15 +854,15 @@ void ScriptTextEditor::_edit_option(int p_op) {
 		} break;
 		case EDIT_TO_UPPERCASE: {
 
-			_convert_case(UPPER);
+			_convert_case(CodeTextEditor::UPPER);
 		} break;
 		case EDIT_TO_LOWERCASE: {
 
-			_convert_case(LOWER);
+			_convert_case(CodeTextEditor::LOWER);
 		} break;
 		case EDIT_CAPITALIZE: {
 
-			_convert_case(CAPITALIZE);
+			_convert_case(CodeTextEditor::CAPITALIZE);
 		} break;
 		case SEARCH_FIND: {
 
@@ -1228,7 +902,7 @@ void ScriptTextEditor::_edit_option(int p_op) {
 			int line = tx->cursor_get_line();
 			bool dobreak = !tx->is_line_set_as_breakpoint(line);
 			tx->set_line_as_breakpoint(line, dobreak);
-			ScriptEditor::get_singleton()->get_debugger()->set_breakpoint(get_edited_script()->get_path(), line + 1, dobreak);
+			ScriptEditor::get_singleton()->get_debugger()->set_breakpoint(script->get_path(), line + 1, dobreak);
 		} break;
 		case DEBUG_REMOVE_ALL_BREAKPOINTS: {
 
@@ -1239,7 +913,7 @@ void ScriptTextEditor::_edit_option(int p_op) {
 				int line = E->get();
 				bool dobreak = !tx->is_line_set_as_breakpoint(line);
 				tx->set_line_as_breakpoint(line, dobreak);
-				ScriptEditor::get_singleton()->get_debugger()->set_breakpoint(get_edited_script()->get_path(), line + 1, dobreak);
+				ScriptEditor::get_singleton()->get_debugger()->set_breakpoint(script->get_path(), line + 1, dobreak);
 			}
 		}
 		case DEBUG_GOTO_NEXT_BREAKPOINT: {
@@ -1359,7 +1033,7 @@ void ScriptTextEditor::clear_edit_menu() {
 void ScriptTextEditor::reload(bool p_soft) {
 
 	TextEdit *te = code_editor->get_text_edit();
-	Ref<Script> scr = get_edited_script();
+	Ref<Script> scr = script;
 	if (scr.is_null())
 		return;
 	scr->set_source_code(te->get_text());
@@ -1743,9 +1417,12 @@ ScriptTextEditor::ScriptTextEditor() {
 	code_editor->get_text_edit()->set_drag_forwarding(this);
 }
 
-static ScriptEditorBase *create_editor(const Ref<Script> &p_script) {
+static ScriptEditorBase *create_editor(const RES &p_resource) {
 
-	return memnew(ScriptTextEditor);
+	if (Object::cast_to<Script>(*p_resource)) {
+		return memnew(ScriptTextEditor);
+	}
+	return NULL;
 }
 
 void ScriptTextEditor::register_editor() {

editor/plugins/script_text_editor.h

@@ -138,12 +138,7 @@ protected:
 	void _goto_line(int p_line) { goto_line(p_line); }
 	void _lookup_symbol(const String &p_symbol, int p_row, int p_column);
 
-	enum CaseStyle {
-		UPPER,
-		LOWER,
-		CAPITALIZE,
-	};
-	void _convert_case(CaseStyle p_case);
+	void _convert_case(CodeTextEditor::CaseStyle p_case);
 
 	Variant get_drag_data_fw(const Point2 &p_point, Control *p_from);
 	bool can_drop_data_fw(const Point2 &p_point, const Variant &p_data, Control *p_from) const;
@@ -154,14 +149,13 @@ public:
 	virtual void set_syntax_highlighter(SyntaxHighlighter *p_highlighter);
 
 	virtual void apply_code();
-	virtual Ref<Script> get_edited_script() const;
+	virtual RES get_edited_resource() const;
+	virtual void set_edited_resource(const RES &p_res);
 	virtual Vector<String> get_functions();
-	virtual void set_edited_script(const Ref<Script> &p_script);
 	virtual void reload_text();
 	virtual String get_name();
 	virtual Ref<Texture> get_icon();
 	virtual bool is_unsaved();
-
 	virtual Variant get_edit_state();
 	virtual void set_edit_state(const Variant &p_state);
 	virtual void ensure_focus();

editor/plugins/shader_editor_plugin.cpp

@@ -258,84 +258,10 @@ void ShaderEditor::_menu_option(int p_option) {
 			shader_editor->get_text_edit()->select_all();
 		} break;
 		case EDIT_MOVE_LINE_UP: {
-
-			TextEdit *tx = shader_editor->get_text_edit();
-			if (shader.is_null())
-				return;
-
-			tx->begin_complex_operation();
-			if (tx->is_selection_active()) {
-				int from_line = tx->get_selection_from_line();
-				int from_col = tx->get_selection_from_column();
-				int to_line = tx->get_selection_to_line();
-				int to_column = tx->get_selection_to_column();
-
-				for (int i = from_line; i <= to_line; i++) {
-					int line_id = i;
-					int next_id = i - 1;
-
-					if (line_id == 0 || next_id < 0)
-						return;
-
-					tx->swap_lines(line_id, next_id);
-					tx->cursor_set_line(next_id);
-				}
-				int from_line_up = from_line > 0 ? from_line - 1 : from_line;
-				int to_line_up = to_line > 0 ? to_line - 1 : to_line;
-				tx->select(from_line_up, from_col, to_line_up, to_column);
-			} else {
-				int line_id = tx->cursor_get_line();
-				int next_id = line_id - 1;
-
-				if (line_id == 0 || next_id < 0)
-					return;
-
-				tx->swap_lines(line_id, next_id);
-				tx->cursor_set_line(next_id);
-			}
-			tx->end_complex_operation();
-			tx->update();
-
+			shader_editor->move_lines_up();
 		} break;
 		case EDIT_MOVE_LINE_DOWN: {
-
-			TextEdit *tx = shader_editor->get_text_edit();
-			if (shader.is_null())
-				return;
-
-			tx->begin_complex_operation();
-			if (tx->is_selection_active()) {
-				int from_line = tx->get_selection_from_line();
-				int from_col = tx->get_selection_from_column();
-				int to_line = tx->get_selection_to_line();
-				int to_column = tx->get_selection_to_column();
-
-				for (int i = to_line; i >= from_line; i--) {
-					int line_id = i;
-					int next_id = i + 1;
-
-					if (line_id == tx->get_line_count() - 1 || next_id > tx->get_line_count())
-						return;
-
-					tx->swap_lines(line_id, next_id);
-					tx->cursor_set_line(next_id);
-				}
-				int from_line_down = from_line < tx->get_line_count() ? from_line + 1 : from_line;
-				int to_line_down = to_line < tx->get_line_count() ? to_line + 1 : to_line;
-				tx->select(from_line_down, from_col, to_line_down, to_column);
-			} else {
-				int line_id = tx->cursor_get_line();
-				int next_id = line_id + 1;
-
-				if (line_id == tx->get_line_count() - 1 || next_id > tx->get_line_count())
-					return;
-
-				tx->swap_lines(line_id, next_id);
-				tx->cursor_set_line(next_id);
-			}
-			tx->end_complex_operation();
-			tx->update();
-
+			shader_editor->move_lines_down();
 		} break;
 		case EDIT_INDENT_LEFT: {
 
@@ -356,55 +282,10 @@ void ShaderEditor::_menu_option(int p_option) {
 
 		} break;
 		case EDIT_DELETE_LINE: {
-
-			TextEdit *tx = shader_editor->get_text_edit();
-			if (shader.is_null())
-				return;
-
-			tx->begin_complex_operation();
-			int line = tx->cursor_get_line();
-			tx->set_line(tx->cursor_get_line(), "");
-			tx->backspace_at_cursor();
-			tx->cursor_set_line(line);
-			tx->end_complex_operation();
-
+			shader_editor->delete_lines();
 		} break;
 		case EDIT_CLONE_DOWN: {
-
-			TextEdit *tx = shader_editor->get_text_edit();
-			if (shader.is_null())
-				return;
-
-			int from_line = tx->cursor_get_line();
-			int to_line = tx->cursor_get_line();
-			int column = tx->cursor_get_column();
-
-			if (tx->is_selection_active()) {
-				from_line = tx->get_selection_from_line();
-				to_line = tx->get_selection_to_line();
-				column = tx->cursor_get_column();
-			}
-			int next_line = to_line + 1;
-
-			tx->begin_complex_operation();
-			for (int i = from_line; i <= to_line; i++) {
-
-				if (i >= tx->get_line_count() - 1) {
-					tx->set_line(i, tx->get_line(i) + "\n");
-				}
-				String line_clone = tx->get_line(i);
-				tx->insert_at(line_clone, next_line);
-				next_line++;
-			}
-
-			tx->cursor_set_column(column);
-			if (tx->is_selection_active()) {
-				tx->select(to_line + 1, tx->get_selection_from_column(), next_line - 1, tx->get_selection_to_column());
-			}
-
-			tx->end_complex_operation();
-			tx->update();
-
+			shader_editor->code_lines_down();
 		} break;
 		case EDIT_TOGGLE_COMMENT: {
 

editor/plugins/text_editor.cpp

@@ -0,0 +1,607 @@
+/*************************************************************************/
+/* text_editor.cpp                                                       */
+/*************************************************************************/
+/*                       This file is part of:                           */
+/*                           GODOT ENGINE                                */
+/*                      https://godotengine.org                          */
+/*************************************************************************/
+/* Copyright (c) 2007-2018 Juan Linietsky, Ariel Manzur.                 */
+/* Copyright (c) 2014-2018 Godot Engine contributors (cf. AUTHORS.md)    */
+/*                                                                       */
+/* Permission is hereby granted, free of charge, to any person obtaining */
+/* a copy of this software and associated documentation files (the       */
+/* "Software"), to deal in the Software without restriction, including   */
+/* without limitation the rights to use, copy, modify, merge, publish,   */
+/* distribute, sublicense, and/or sell copies of the Software, and to    */
+/* permit persons to whom the Software is furnished to do so, subject to */
+/* the following conditions:                                             */
+/*                                                                       */
+/* The above copyright notice and this permission notice shall be        */
+/* included in all copies or substantial portions of the Software.       */
+/*                                                                       */
+/* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,       */
+/* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF    */
+/* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.*/
+/* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY  */
+/* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,  */
+/* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE     */
+/* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.                */
+/*************************************************************************/
+
+#include "text_editor.h"
+
+void TextEditor::add_syntax_highlighter(SyntaxHighlighter *p_highlighter) {
+	highlighters[p_highlighter->get_name()] = p_highlighter;
+	highlighter_menu->add_radio_check_item(p_highlighter->get_name());
+}
+
+void TextEditor::set_syntax_highlighter(SyntaxHighlighter *p_highlighter) {
+	TextEdit *te = code_editor->get_text_edit();
+	te->_set_syntax_highlighting(p_highlighter);
+	if (p_highlighter != NULL) {
+		highlighter_menu->set_item_checked(highlighter_menu->get_item_idx_from_text(p_highlighter->get_name()), true);
+	} else {
+		highlighter_menu->set_item_checked(highlighter_menu->get_item_idx_from_text("Standard"), true);
+	}
+
+	// little work around. GDScript highlighter goes through text_edit for colours,
+	// so to remove all colours we need to set and unset them here.
+	if (p_highlighter == NULL) { // standard
+		TextEdit *text_edit = code_editor->get_text_edit();
+		text_edit->add_color_override("number_color", colors_cache.font_color);
+		text_edit->add_color_override("function_color", colors_cache.font_color);
+		text_edit->add_color_override("number_color", colors_cache.font_color);
+		text_edit->add_color_override("member_variable_color", colors_cache.font_color);
+	} else {
+		_load_theme_settings();
+	}
+}
+
+void TextEditor::_change_syntax_highlighter(int p_idx) {
+	Map<String, SyntaxHighlighter *>::Element *el = highlighters.front();
+	while (el != NULL) {
+		highlighter_menu->set_item_checked(highlighter_menu->get_item_idx_from_text(el->key()), false);
+		el = el->next();
+	}
+	set_syntax_highlighter(highlighters[highlighter_menu->get_item_text(p_idx)]);
+}
+
+void TextEditor::_load_theme_settings() {
+
+	TextEdit *text_edit = code_editor->get_text_edit();
+	text_edit->clear_colors();
+
+	Color background_color = EDITOR_GET("text_editor/highlighting/background_color");
+	Color completion_background_color = EDITOR_GET("text_editor/highlighting/completion_background_color");
+	Color completion_selected_color = EDITOR_GET("text_editor/highlighting/completion_selected_color");
+	Color completion_existing_color = EDITOR_GET("text_editor/highlighting/completion_existing_color");
+	Color completion_scroll_color = EDITOR_GET("text_editor/highlighting/completion_scroll_color");
+	Color completion_font_color = EDITOR_GET("text_editor/highlighting/completion_font_color");
+	Color text_color = EDITOR_GET("text_editor/highlighting/text_color");
+	Color line_number_color = EDITOR_GET("text_editor/highlighting/line_number_color");
+	Color caret_color = EDITOR_GET("text_editor/highlighting/caret_color");
+	Color caret_background_color = EDITOR_GET("text_editor/highlighting/caret_background_color");
+	Color text_selected_color = EDITOR_GET("text_editor/highlighting/text_selected_color");
+	Color selection_color = EDITOR_GET("text_editor/highlighting/selection_color");
+	Color brace_mismatch_color = EDITOR_GET("text_editor/highlighting/brace_mismatch_color");
+	Color current_line_color = EDITOR_GET("text_editor/highlighting/current_line_color");
+	Color line_length_guideline_color = EDITOR_GET("text_editor/highlighting/line_length_guideline_color");
+	Color word_highlighted_color = EDITOR_GET("text_editor/highlighting/word_highlighted_color");
+	Color number_color = EDITOR_GET("text_editor/highlighting/number_color");
+	Color function_color = EDITOR_GET("text_editor/highlighting/function_color");
+	Color member_variable_color = EDITOR_GET("text_editor/highlighting/member_variable_color");
+	Color mark_color = EDITOR_GET("text_editor/highlighting/mark_color");
+	Color breakpoint_color = EDITOR_GET("text_editor/highlighting/breakpoint_color");
+	Color code_folding_color = EDITOR_GET("text_editor/highlighting/code_folding_color");
+	Color search_result_color = EDITOR_GET("text_editor/highlighting/search_result_color");
+	Color search_result_border_color = EDITOR_GET("text_editor/highlighting/search_result_border_color");
+	Color symbol_color = EDITOR_GET("text_editor/highlighting/symbol_color");
+	Color keyword_color = EDITOR_GET("text_editor/highlighting/keyword_color");
+	Color basetype_color = EDITOR_GET("text_editor/highlighting/base_type_color");
+	Color type_color = EDITOR_GET("text_editor/highlighting/engine_type_color");
+	Color comment_color = EDITOR_GET("text_editor/highlighting/comment_color");
+	Color string_color = EDITOR_GET("text_editor/highlighting/string_color");
+
+	text_edit->add_color_override("background_color", background_color);
+	text_edit->add_color_override("completion_background_color", completion_background_color);
+	text_edit->add_color_override("completion_selected_color", completion_selected_color);
+	text_edit->add_color_override("completion_existing_color", completion_existing_color);
+	text_edit->add_color_override("completion_scroll_color", completion_scroll_color);
+	text_edit->add_color_override("completion_font_color", completion_font_color);
+	text_edit->add_color_override("font_color", text_color);
+	text_edit->add_color_override("line_number_color", line_number_color);
+	text_edit->add_color_override("caret_color", caret_color);
+	text_edit->add_color_override("caret_background_color", caret_background_color);
+	text_edit->add_color_override("font_selected_color", text_selected_color);
+	text_edit->add_color_override("selection_color", selection_color);
+	text_edit->add_color_override("brace_mismatch_color", brace_mismatch_color);
+	text_edit->add_color_override("current_line_color", current_line_color);
+	text_edit->add_color_override("line_length_guideline_color", line_length_guideline_color);
+	text_edit->add_color_override("word_highlighted_color", word_highlighted_color);
+	text_edit->add_color_override("number_color", number_color);
+	text_edit->add_color_override("function_color", function_color);
+	text_edit->add_color_override("member_variable_color", member_variable_color);
+	text_edit->add_color_override("breakpoint_color", breakpoint_color);
+	text_edit->add_color_override("mark_color", mark_color);
+	text_edit->add_color_override("code_folding_color", code_folding_color);
+	text_edit->add_color_override("search_result_color", search_result_color);
+	text_edit->add_color_override("search_result_border_color", search_result_border_color);
+	text_edit->add_color_override("symbol_color", symbol_color);
+
+	text_edit->add_constant_override("line_spacing", EDITOR_DEF("text_editor/theme/line_spacing", 4));
+
+	colors_cache.font_color = text_color;
+	colors_cache.symbol_color = symbol_color;
+	colors_cache.keyword_color = keyword_color;
+	colors_cache.basetype_color = basetype_color;
+	colors_cache.type_color = type_color;
+	colors_cache.comment_color = comment_color;
+	colors_cache.string_color = string_color;
+}
+
+String TextEditor::get_name() {
+	String name;
+
+	if (text_file->get_path().find("local://") == -1 && text_file->get_path().find("::") == -1) {
+		name = text_file->get_path().get_file();
+		if (is_unsaved()) {
+			name += "(*)";
+		}
+	} else if (text_file->get_name() != "") {
+		name = text_file->get_name();
+	} else {
+		name = text_file->get_class() + "(" + itos(text_file->get_instance_id()) + ")";
+	}
+
+	return name;
+}
+
+Ref<Texture> TextEditor::get_icon() {
+
+	if (get_parent_control() && get_parent_control()->has_icon(text_file->get_class(), "EditorIcons")) {
+		return get_parent_control()->get_icon(text_file->get_class(), "EditorIcons");
+	}
+	return Ref<Texture>();
+}
+
+RES TextEditor::get_edited_resource() const {
+	return text_file;
+}
+
+void TextEditor::set_edited_resource(const RES &p_res) {
+	ERR_FAIL_COND(!text_file.is_null());
+
+	text_file = p_res;
+
+	code_editor->get_text_edit()->set_text(text_file->get_text());
+	code_editor->get_text_edit()->clear_undo_history();
+	code_editor->get_text_edit()->tag_saved_version();
+
+	emit_signal("name_changed");
+	code_editor->update_line_and_column();
+}
+
+void TextEditor::add_callback(const String &p_function, PoolStringArray p_args) {
+}
+
+void TextEditor::set_debugger_active(bool p_active) {
+}
+
+void TextEditor::get_breakpoints(List<int> *p_breakpoints) {
+}
+
+void TextEditor::reload_text() {
+
+	ERR_FAIL_COND(text_file.is_null());
+
+	TextEdit *te = code_editor->get_text_edit();
+	int column = te->cursor_get_column();
+	int row = te->cursor_get_line();
+	int h = te->get_h_scroll();
+	int v = te->get_v_scroll();
+
+	te->set_text(text_file->get_text());
+	te->clear_undo_history();
+	te->cursor_set_line(row);
+	te->cursor_set_column(column);
+	te->set_h_scroll(h);
+	te->set_v_scroll(v);
+
+	te->tag_saved_version();
+
+	code_editor->update_line_and_column();
+}
+
+void TextEditor::_validate_script() {
+	emit_signal("name_changed");
+	emit_signal("edited_script_changed");
+}
+
+void TextEditor::apply_code() {
+	text_file->set_text(code_editor->get_text_edit()->get_text());
+}
+
+bool TextEditor::is_unsaved() {
+
+	return code_editor->get_text_edit()->get_version() != code_editor->get_text_edit()->get_saved_version();
+}
+
+Variant TextEditor::get_edit_state() {
+
+	return code_editor->get_edit_state();
+}
+
+void TextEditor::set_edit_state(const Variant &p_state) {
+
+	code_editor->set_edit_state(p_state);
+}
+
+void TextEditor::trim_trailing_whitespace() {
+
+	code_editor->trim_trailing_whitespace();
+}
+
+void TextEditor::convert_indent_to_spaces() {
+
+	code_editor->convert_indent_to_spaces();
+}
+
+void TextEditor::convert_indent_to_tabs() {
+
+	code_editor->convert_indent_to_tabs();
+}
+
+void TextEditor::tag_saved_version() {
+
+	code_editor->get_text_edit()->tag_saved_version();
+}
+
+void TextEditor::goto_line(int p_line, bool p_with_error) {
+
+	code_editor->goto_line(p_line);
+}
+
+void TextEditor::ensure_focus() {
+
+	code_editor->get_text_edit()->grab_focus();
+}
+
+Vector<String> TextEditor::get_functions() {
+
+	return Vector<String>();
+}
+
+bool TextEditor::show_members_overview() {
+	return true;
+}
+
+void TextEditor::update_settings() {
+
+	code_editor->update_editor_settings();
+}
+
+void TextEditor::set_tooltip_request_func(String p_method, Object *p_obj) {
+
+	code_editor->get_text_edit()->set_tooltip_request_func(p_obj, p_method, this);
+}
+
+Control *TextEditor::get_edit_menu() {
+
+	return edit_hb;
+}
+
+void TextEditor::clear_edit_menu() {
+	memdelete(edit_hb);
+}
+
+void TextEditor::_notification(int p_what) {
+
+	switch (p_what) {
+		case NOTIFICATION_READY:
+			_load_theme_settings();
+			set_syntax_highlighter(NULL);
+			break;
+	}
+}
+
+void TextEditor::_edit_option(int p_op) {
+	TextEdit *tx = code_editor->get_text_edit();
+
+	switch (p_op) {
+		case EDIT_UNDO: {
+
+			tx->undo();
+			tx->call_deferred("grab_focus");
+		} break;
+		case EDIT_REDO: {
+
+			tx->redo();
+			tx->call_deferred("grab_focus");
+		} break;
+		case EDIT_CUT: {
+
+			tx->cut();
+			tx->call_deferred("grab_focus");
+		} break;
+		case EDIT_COPY: {
+
+			tx->copy();
+			tx->call_deferred("grab_focus");
+		} break;
+		case EDIT_PASTE: {
+
+			tx->paste();
+			tx->call_deferred("grab_focus");
+		} break;
+		case EDIT_SELECT_ALL: {
+
+			tx->select_all();
+			tx->call_deferred("grab_focus");
+		} break;
+		case EDIT_MOVE_LINE_UP: {
+
+			code_editor->move_lines_up();
+		} break;
+		case EDIT_MOVE_LINE_DOWN: {
+
+			code_editor->move_lines_down();
+		} break;
+		case EDIT_INDENT_LEFT: {
+
+			tx->indent_left();
+		} break;
+		case EDIT_INDENT_RIGHT: {
+
+			tx->indent_right();
+		} break;
+		case EDIT_DELETE_LINE: {
+
+			code_editor->delete_lines();
+		} break;
+		case EDIT_CLONE_DOWN: {
+
+			code_editor->code_lines_down();
+		} break;
+		case EDIT_TOGGLE_FOLD_LINE: {
+
+			tx->toggle_fold_line(tx->cursor_get_line());
+			tx->update();
+		} break;
+		case EDIT_FOLD_ALL_LINES: {
+
+			tx->fold_all_lines();
+			tx->update();
+		} break;
+		case EDIT_UNFOLD_ALL_LINES: {
+
+			tx->unhide_all_lines();
+			tx->update();
+		} break;
+		case EDIT_TRIM_TRAILING_WHITESAPCE: {
+
+			trim_trailing_whitespace();
+		} break;
+		case EDIT_CONVERT_INDENT_TO_SPACES: {
+
+			convert_indent_to_spaces();
+		} break;
+		case EDIT_CONVERT_INDENT_TO_TABS: {
+
+			convert_indent_to_tabs();
+		} break;
+		case EDIT_TO_UPPERCASE: {
+
+			_convert_case(CodeTextEditor::UPPER);
+		} break;
+		case EDIT_TO_LOWERCASE: {
+
+			_convert_case(CodeTextEditor::LOWER);
+		} break;
+		case EDIT_CAPITALIZE: {
+
+			_convert_case(CodeTextEditor::CAPITALIZE);
+		} break;
+		case SEARCH_FIND: {
+
+			code_editor->get_find_replace_bar()->popup_search();
+		} break;
+		case SEARCH_FIND_NEXT: {
+
+			code_editor->get_find_replace_bar()->search_next();
+		} break;
+		case SEARCH_FIND_PREV: {
+
+			code_editor->get_find_replace_bar()->search_prev();
+		} break;
+		case SEARCH_REPLACE: {
+
+			code_editor->get_find_replace_bar()->popup_replace();
+		} break;
+		case SEARCH_GOTO_LINE: {
+
+			goto_line_dialog->popup_find_line(tx);
+		} break;
+	}
+}
+
+void TextEditor::_convert_case(CodeTextEditor::CaseStyle p_case) {
+
+	code_editor->convert_case(p_case);
+}
+
+void TextEditor::_bind_methods() {
+
+	ClassDB::bind_method("_validate_script", &TextEditor::_validate_script);
+	ClassDB::bind_method("_load_theme_settings", &TextEditor::_load_theme_settings);
+	ClassDB::bind_method("_edit_option", &TextEditor::_edit_option);
+	ClassDB::bind_method("_change_syntax_highlighter", &TextEditor::_change_syntax_highlighter);
+	ClassDB::bind_method("_text_edit_gui_input", &TextEditor::_text_edit_gui_input);
+}
+
+static ScriptEditorBase *create_editor(const RES &p_resource) {
+
+	if (Object::cast_to<TextFile>(*p_resource)) {
+		return memnew(TextEditor);
+	}
+	return NULL;
+}
+
+void TextEditor::register_editor() {
+
+	ScriptEditor::register_create_script_editor_function(create_editor);
+}
+
+void TextEditor::_text_edit_gui_input(const Ref<InputEvent> &ev) {
+
+	Ref<InputEventMouseButton> mb = ev;
+
+	if (mb.is_valid()) {
+		if (mb->get_button_index() == BUTTON_RIGHT) {
+
+			int col, row;
+			TextEdit *tx = code_editor->get_text_edit();
+			tx->_get_mouse_pos(mb->get_global_position() - tx->get_global_position(), row, col);
+
+			tx->set_right_click_moves_caret(EditorSettings::get_singleton()->get("text_editor/cursor/right_click_moves_caret"));
+			bool can_fold = tx->can_fold(row);
+			bool is_folded = tx->is_folded(row);
+
+			if (tx->is_right_click_moving_caret()) {
+				if (tx->is_selection_active()) {
+
+					int from_line = tx->get_selection_from_line();
+					int to_line = tx->get_selection_to_line();
+					int from_column = tx->get_selection_from_column();
+					int to_column = tx->get_selection_to_column();
+
+					if (row < from_line || row > to_line || (row == from_line && col < from_column) || (row == to_line && col > to_column)) {
+						// Right click is outside the seleted text
+						tx->deselect();
+					}
+				}
+				if (!tx->is_selection_active()) {
+					tx->cursor_set_line(row, true, false);
+					tx->cursor_set_column(col);
+				}
+			}
+
+			if (!mb->is_pressed()) {
+				_make_context_menu(tx->is_selection_active(), can_fold, is_folded);
+			}
+		}
+	}
+}
+
+void TextEditor::_make_context_menu(bool p_selection, bool p_can_fold, bool p_is_folded) {
+
+	context_menu->clear();
+	if (p_selection) {
+		context_menu->add_shortcut(ED_GET_SHORTCUT("script_text_editor/cut"), EDIT_CUT);
+		context_menu->add_shortcut(ED_GET_SHORTCUT("script_text_editor/copy"), EDIT_COPY);
+	}
+
+	context_menu->add_shortcut(ED_GET_SHORTCUT("script_text_editor/paste"), EDIT_PASTE);
+	context_menu->add_separator();
+	context_menu->add_shortcut(ED_GET_SHORTCUT("script_text_editor/select_all"), EDIT_SELECT_ALL);
+	context_menu->add_shortcut(ED_GET_SHORTCUT("script_text_editor/undo"), EDIT_UNDO);
+	context_menu->add_shortcut(ED_GET_SHORTCUT("script_text_editor/redo"), EDIT_REDO);
+	context_menu->add_separator();
+	context_menu->add_shortcut(ED_GET_SHORTCUT("script_text_editor/indent_left"), EDIT_INDENT_LEFT);
+	context_menu->add_shortcut(ED_GET_SHORTCUT("script_text_editor/indent_right"), EDIT_INDENT_RIGHT);
+
+	if (p_selection) {
+		context_menu->add_separator();
+		context_menu->add_shortcut(ED_GET_SHORTCUT("script_text_editor/convert_to_uppercase"), EDIT_TO_UPPERCASE);
+		context_menu->add_shortcut(ED_GET_SHORTCUT("script_text_editor/convert_to_lowercase"), EDIT_TO_LOWERCASE);
+	}
+	if (p_can_fold || p_is_folded)
+		context_menu->add_shortcut(ED_GET_SHORTCUT("script_text_editor/toggle_fold_line"), EDIT_TOGGLE_FOLD_LINE);
+
+	context_menu->set_position(get_global_transform().xform(get_local_mouse_position()));
+	context_menu->set_size(Vector2(1, 1));
+	context_menu->popup();
+}
+
+TextEditor::TextEditor() {
+	code_editor = memnew(CodeTextEditor);
+	add_child(code_editor);
+	code_editor->add_constant_override("separation", 0);
+	code_editor->connect("load_theme_settings", this, "_load_theme_settings");
+	code_editor->connect("validate_script", this, "_validate_script");
+	code_editor->set_anchors_and_margins_preset(Control::PRESET_WIDE);
+	code_editor->set_v_size_flags(Control::SIZE_EXPAND_FILL);
+
+	update_settings();
+
+	code_editor->get_text_edit()->set_context_menu_enabled(false);
+	code_editor->get_text_edit()->connect("gui_input", this, "_text_edit_gui_input");
+
+	context_menu = memnew(PopupMenu);
+	add_child(context_menu);
+	context_menu->connect("id_pressed", this, "_edit_option");
+
+	edit_hb = memnew(HBoxContainer);
+
+	search_menu = memnew(MenuButton);
+	edit_hb->add_child(search_menu);
+	search_menu->set_text(TTR("Search"));
+	search_menu->get_popup()->connect("id_pressed", this, "_edit_option");
+
+	search_menu->get_popup()->add_shortcut(ED_GET_SHORTCUT("script_text_editor/find"), SEARCH_FIND);
+	search_menu->get_popup()->add_shortcut(ED_GET_SHORTCUT("script_text_editor/find_next"), SEARCH_FIND_NEXT);
+	search_menu->get_popup()->add_shortcut(ED_GET_SHORTCUT("script_text_editor/find_previous"), SEARCH_FIND_PREV);
+	search_menu->get_popup()->add_shortcut(ED_GET_SHORTCUT("script_text_editor/replace"), SEARCH_REPLACE);
+	search_menu->get_popup()->add_separator();
+	search_menu->get_popup()->add_shortcut(ED_GET_SHORTCUT("script_text_editor/goto_line"), SEARCH_GOTO_LINE);
+
+	goto_line_dialog = memnew(GotoLineDialog);
+	add_child(goto_line_dialog);
+
+	edit_menu = memnew(MenuButton);
+	edit_menu->set_text(TTR("Edit"));
+	edit_menu->get_popup()->connect("id_pressed", this, "_edit_option");
+
+	edit_hb->add_child(edit_menu);
+	edit_menu->get_popup()->add_shortcut(ED_GET_SHORTCUT("script_text_editor/undo"), EDIT_UNDO);
+	edit_menu->get_popup()->add_shortcut(ED_GET_SHORTCUT("script_text_editor/redo"), EDIT_REDO);
+	edit_menu->get_popup()->add_separator();
+	edit_menu->get_popup()->add_shortcut(ED_GET_SHORTCUT("script_text_editor/cut"), EDIT_CUT);
+	edit_menu->get_popup()->add_shortcut(ED_GET_SHORTCUT("script_text_editor/copy"), EDIT_COPY);
+	edit_menu->get_popup()->add_shortcut(ED_GET_SHORTCUT("script_text_editor/paste"), EDIT_PASTE);
+	edit_menu->get_popup()->add_separator();
+	edit_menu->get_popup()->add_shortcut(ED_GET_SHORTCUT("script_text_editor/select_all"), EDIT_SELECT_ALL);
+	edit_menu->get_popup()->add_separator();
+	edit_menu->get_popup()->add_shortcut(ED_GET_SHORTCUT("script_text_editor/move_up"), EDIT_MOVE_LINE_UP);
+	edit_menu->get_popup()->add_shortcut(ED_GET_SHORTCUT("script_text_editor/move_down"), EDIT_MOVE_LINE_DOWN);
+	edit_menu->get_popup()->add_shortcut(ED_GET_SHORTCUT("script_text_editor/indent_left"), EDIT_INDENT_LEFT);
+	edit_menu->get_popup()->add_shortcut(ED_GET_SHORTCUT("script_text_editor/indent_right"), EDIT_INDENT_RIGHT);
+	edit_menu->get_popup()->add_shortcut(ED_GET_SHORTCUT("script_text_editor/delete_line"), EDIT_DELETE_LINE);
+	edit_menu->get_popup()->add_shortcut(ED_GET_SHORTCUT("script_text_editor/toggle_fold_line"), EDIT_TOGGLE_FOLD_LINE);
+	edit_menu->get_popup()->add_shortcut(ED_GET_SHORTCUT("script_text_editor/fold_all_lines"), EDIT_FOLD_ALL_LINES);
+	edit_menu->get_popup()->add_shortcut(ED_GET_SHORTCUT("script_text_editor/unfold_all_lines"), EDIT_UNFOLD_ALL_LINES);
+	edit_menu->get_popup()->add_separator();
+	edit_menu->get_popup()->add_shortcut(ED_GET_SHORTCUT("script_text_editor/clone_down"), EDIT_CLONE_DOWN);
+	edit_menu->get_popup()->add_shortcut(ED_GET_SHORTCUT("script_text_editor/trim_trailing_whitespace"), EDIT_TRIM_TRAILING_WHITESAPCE);
+	edit_menu->get_popup()->add_shortcut(ED_GET_SHORTCUT("script_text_editor/convert_indent_to_spaces"), EDIT_CONVERT_INDENT_TO_SPACES);
+	edit_menu->get_popup()->add_shortcut(ED_GET_SHORTCUT("script_text_editor/convert_indent_to_tabs"), EDIT_CONVERT_INDENT_TO_TABS);
+
+	edit_menu->get_popup()->add_separator();
+	PopupMenu *convert_case = memnew(PopupMenu);
+	convert_case->set_name("convert_case");
+	edit_menu->get_popup()->add_child(convert_case);
+	edit_menu->get_popup()->add_submenu_item(TTR("Convert Case"), "convert_case");
+	convert_case->add_shortcut(ED_SHORTCUT("script_text_editor/convert_to_uppercase", TTR("Uppercase")), EDIT_TO_UPPERCASE);
+	convert_case->add_shortcut(ED_SHORTCUT("script_text_editor/convert_to_lowercase", TTR("Lowercase")), EDIT_TO_LOWERCASE);
+	convert_case->add_shortcut(ED_SHORTCUT("script_text_editor/capitalize", TTR("Capitalize")), EDIT_CAPITALIZE);
+	convert_case->connect("id_pressed", this, "_edit_option");
+
+	highlighters["Standard"] = NULL;
+	highlighter_menu = memnew(PopupMenu);
+	highlighter_menu->set_name("highlighter_menu");
+	edit_menu->get_popup()->add_child(highlighter_menu);
+	edit_menu->get_popup()->add_submenu_item(TTR("Syntax Highlighter"), "highlighter_menu");
+	highlighter_menu->add_radio_check_item(TTR("Standard"));
+	highlighter_menu->connect("id_pressed", this, "_change_syntax_highlighter");
+
+	code_editor->get_text_edit()->set_drag_forwarding(this);
+}

editor/plugins/text_editor.h

@@ -0,0 +1,146 @@
+/*************************************************************************/
+/*  text_editor.h                                                        */
+/*************************************************************************/
+/*                       This file is part of:                           */
+/*                           GODOT ENGINE                                */
+/*                      https://godotengine.org                          */
+/*************************************************************************/
+/* Copyright (c) 2007-2018 Juan Linietsky, Ariel Manzur.                 */
+/* Copyright (c) 2014-2018 Godot Engine contributors (cf. AUTHORS.md)    */
+/*                                                                       */
+/* Permission is hereby granted, free of charge, to any person obtaining */
+/* a copy of this software and associated documentation files (the       */
+/* "Software"), to deal in the Software without restriction, including   */
+/* without limitation the rights to use, copy, modify, merge, publish,   */
+/* distribute, sublicense, and/or sell copies of the Software, and to    */
+/* permit persons to whom the Software is furnished to do so, subject to */
+/* the following conditions:                                             */
+/*                                                                       */
+/* The above copyright notice and this permission notice shall be        */
+/* included in all copies or substantial portions of the Software.       */
+/*                                                                       */
+/* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,       */
+/* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF    */
+/* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.*/
+/* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY  */
+/* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,  */
+/* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE     */
+/* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.                */
+/*************************************************************************/
+
+#ifndef TEXT_EDITOR_H
+#define TEXT_EDITOR_H
+
+#include "script_editor_plugin.h"
+
+class TextEditor : public ScriptEditorBase {
+
+	GDCLASS(TextEditor, ScriptEditorBase)
+
+private:
+	CodeTextEditor *code_editor;
+
+	Ref<TextFile> text_file;
+
+	HBoxContainer *edit_hb;
+	MenuButton *edit_menu;
+	PopupMenu *highlighter_menu;
+	MenuButton *search_menu;
+	PopupMenu *context_menu;
+
+	GotoLineDialog *goto_line_dialog;
+
+	struct ColorsCache {
+		Color font_color;
+		Color symbol_color;
+		Color keyword_color;
+		Color basetype_color;
+		Color type_color;
+		Color comment_color;
+		Color string_color;
+	} colors_cache;
+
+	enum {
+		EDIT_UNDO,
+		EDIT_REDO,
+		EDIT_CUT,
+		EDIT_COPY,
+		EDIT_PASTE,
+		EDIT_SELECT_ALL,
+		EDIT_TRIM_TRAILING_WHITESAPCE,
+		EDIT_CONVERT_INDENT_TO_SPACES,
+		EDIT_CONVERT_INDENT_TO_TABS,
+		EDIT_MOVE_LINE_UP,
+		EDIT_MOVE_LINE_DOWN,
+		EDIT_INDENT_RIGHT,
+		EDIT_INDENT_LEFT,
+		EDIT_DELETE_LINE,
+		EDIT_CLONE_DOWN,
+		EDIT_TO_UPPERCASE,
+		EDIT_TO_LOWERCASE,
+		EDIT_CAPITALIZE,
+		EDIT_TOGGLE_FOLD_LINE,
+		EDIT_FOLD_ALL_LINES,
+		EDIT_UNFOLD_ALL_LINES,
+		SEARCH_FIND,
+		SEARCH_FIND_NEXT,
+		SEARCH_FIND_PREV,
+		SEARCH_REPLACE,
+		SEARCH_GOTO_LINE,
+	};
+
+protected:
+	static void _bind_methods();
+
+	void _notification(int p_what);
+
+	void _edit_option(int p_op);
+	void _make_context_menu(bool p_selection, bool p_can_fold, bool p_is_folded);
+	void _text_edit_gui_input(const Ref<InputEvent> &ev);
+
+	Map<String, SyntaxHighlighter *> highlighters;
+	void _change_syntax_highlighter(int p_idx);
+	void _load_theme_settings();
+
+	void _convert_case(CodeTextEditor::CaseStyle p_case);
+
+	void _validate_script();
+
+public:
+	virtual void add_syntax_highlighter(SyntaxHighlighter *p_highlighter);
+	virtual void set_syntax_highlighter(SyntaxHighlighter *p_highlighter);
+
+	virtual String get_name();
+	virtual Ref<Texture> get_icon();
+	virtual RES get_edited_resource() const;
+	virtual void set_edited_resource(const RES &p_res);
+	void set_edited_file(const Ref<TextFile> &p_file);
+	virtual void reload_text();
+	virtual void apply_code();
+	virtual bool is_unsaved();
+	virtual Variant get_edit_state();
+	virtual void set_edit_state(const Variant &p_state);
+	virtual Vector<String> get_functions();
+	virtual void get_breakpoints(List<int> *p_breakpoints);
+	virtual void goto_line(int p_line, bool p_with_error = false);
+	virtual void trim_trailing_whitespace();
+	virtual void convert_indent_to_spaces();
+	virtual void convert_indent_to_tabs();
+	virtual void ensure_focus();
+	virtual void tag_saved_version();
+	virtual void update_settings();
+	virtual bool show_members_overview();
+	virtual bool can_lose_focus_on_node_selection() { return true; }
+	virtual void set_debugger_active(bool p_active);
+	virtual void set_tooltip_request_func(String p_method, Object *p_obj);
+	virtual void add_callback(const String &p_function, PoolStringArray p_args);
+
+	virtual Control *get_edit_menu();
+	virtual void clear_edit_menu();
+
+	static void register_editor();
+
+	TextEditor();
+};
+
+#endif // TEXT_EDITOR_H

modules/visual_script/visual_script_editor.cpp

@@ -1962,22 +1962,16 @@ void VisualScriptEditor::_button_resource_previewed(const String &p_path, const
 void VisualScriptEditor::apply_code() {
 }
 
-Ref<Script> VisualScriptEditor::get_edited_script() const {
-
+RES VisualScriptEditor::get_edited_resource() const {
 	return script;
 }
 
-Vector<String> VisualScriptEditor::get_functions() {
+void VisualScriptEditor::set_edited_resource(const RES &p_res) {
 
-	return Vector<String>();
-}
-
-void VisualScriptEditor::set_edited_script(const Ref<Script> &p_script) {
-
-	script = p_script;
-	signal_editor->script = p_script;
+	script = p_res;
+	signal_editor->script = script;
 	signal_editor->undo_redo = undo_redo;
-	variable_editor->script = p_script;
+	variable_editor->script = script;
 	variable_editor->undo_redo = undo_redo;
 
 	script->connect("node_ports_changed", this, "_node_ports_changed");
@@ -1986,6 +1980,11 @@ void VisualScriptEditor::set_edited_script(const Ref<Script> &p_script) {
 	_update_available_nodes();
 }
 
+Vector<String> VisualScriptEditor::get_functions() {
+
+	return Vector<String>();
+}
+
 void VisualScriptEditor::reload_text() {
 }
 
@@ -3515,9 +3514,9 @@ VisualScriptEditor::~VisualScriptEditor() {
 	memdelete(variable_editor);
 }
 
-static ScriptEditorBase *create_editor(const Ref<Script> &p_script) {
+static ScriptEditorBase *create_editor(const RES &p_resource) {
 
-	if (Object::cast_to<VisualScript>(*p_script)) {
+	if (Object::cast_to<VisualScript>(*p_resource)) {
 		return memnew(VisualScriptEditor);
 	}
 

modules/visual_script/visual_script_editor.h

@@ -250,9 +250,9 @@ public:
 	virtual void set_syntax_highlighter(SyntaxHighlighter *p_highlighter);
 
 	virtual void apply_code();
-	virtual Ref<Script> get_edited_script() const;
+	virtual RES get_edited_resource() const;
+	virtual void set_edited_resource(const RES &p_res);
 	virtual Vector<String> get_functions();
-	virtual void set_edited_script(const Ref<Script> &p_script);
 	virtual void reload_text();
 	virtual String get_name();
 	virtual Ref<Texture> get_icon();

scene/register_scene_types.cpp

@@ -156,6 +156,7 @@
 #include "scene/resources/sky_box.h"
 #include "scene/resources/sphere_shape.h"
 #include "scene/resources/surface_tool.h"
+#include "scene/resources/text_file.h"
 #include "scene/resources/texture.h"
 #include "scene/resources/tile_set.h"
 #include "scene/resources/video_stream.h"
@@ -617,6 +618,8 @@ void register_scene_types() {
 	ClassDB::register_class<BitmapFont>();
 	ClassDB::register_class<Curve>();
 
+	ClassDB::register_class<TextFile>();
+
 	ClassDB::register_class<DynamicFontData>();
 	ClassDB::register_class<DynamicFont>();
 

scene/resources/text_file.cpp

@@ -0,0 +1,77 @@
+/*************************************************************************/
+/*  text_file.cpp                                                        */
+/*************************************************************************/
+/*                       This file is part of:                           */
+/*                           GODOT ENGINE                                */
+/*                      https://godotengine.org                          */
+/*************************************************************************/
+/* Copyright (c) 2007-2018 Juan Linietsky, Ariel Manzur.                 */
+/* Copyright (c) 2014-2018 Godot Engine contributors (cf. AUTHORS.md)    */
+/*                                                                       */
+/* Permission is hereby granted, free of charge, to any person obtaining */
+/* a copy of this software and associated documentation files (the       */
+/* "Software"), to deal in the Software without restriction, including   */
+/* without limitation the rights to use, copy, modify, merge, publish,   */
+/* distribute, sublicense, and/or sell copies of the Software, and to    */
+/* permit persons to whom the Software is furnished to do so, subject to */
+/* the following conditions:                                             */
+/*                                                                       */
+/* The above copyright notice and this permission notice shall be        */
+/* included in all copies or substantial portions of the Software.       */
+/*                                                                       */
+/* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,       */
+/* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF    */
+/* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.*/
+/* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY  */
+/* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,  */
+/* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE     */
+/* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.                */
+/*************************************************************************/
+
+#include "text_file.h"
+
+#include "os/file_access.h"
+
+bool TextFile::has_text() const {
+	return text != "";
+}
+
+String TextFile::get_text() const {
+	return text;
+}
+
+void TextFile::set_text(const String &p_code) {
+	text = p_code;
+}
+
+void TextFile::reload_from_file() {
+	load_text(path);
+}
+
+Error TextFile::load_text(const String &p_path) {
+
+	PoolVector<uint8_t> sourcef;
+	Error err;
+	FileAccess *f = FileAccess::open(p_path, FileAccess::READ, &err);
+	if (err) {
+		ERR_FAIL_COND_V(err, err);
+	}
+
+	int len = f->get_len();
+	sourcef.resize(len + 1);
+	PoolVector<uint8_t>::Write w = sourcef.write();
+	int r = f->get_buffer(w.ptr(), len);
+	f->close();
+	memdelete(f);
+	ERR_FAIL_COND_V(r != len, ERR_CANT_OPEN);
+	w[len] = 0;
+
+	String s;
+	if (s.parse_utf8((const char *)w.ptr())) {
+		ERR_EXPLAIN("Script '" + p_path + "' contains invalid unicode (utf-8), so it was not loaded. Please ensure that scripts are saved in valid utf-8 unicode.");
+		ERR_FAIL_V(ERR_INVALID_DATA);
+	}
+	text = s;
+	path = p_path;
+	return OK;
+}

scene/resources/text_file.h

@@ -0,0 +1,55 @@
+/*************************************************************************/
+/*  text_file.h                                                          */
+/*************************************************************************/
+/*                       This file is part of:                           */
+/*                           GODOT ENGINE                                */
+/*                      https://godotengine.org                          */
+/*************************************************************************/
+/* Copyright (c) 2007-2018 Juan Linietsky, Ariel Manzur.                 */
+/* Copyright (c) 2014-2018 Godot Engine contributors (cf. AUTHORS.md)    */
+/*                                                                       */
+/* Permission is hereby granted, free of charge, to any person obtaining */
+/* a copy of this software and associated documentation files (the       */
+/* "Software"), to deal in the Software without restriction, including   */
+/* without limitation the rights to use, copy, modify, merge, publish,   */
+/* distribute, sublicense, and/or sell copies of the Software, and to    */
+/* permit persons to whom the Software is furnished to do so, subject to */
+/* the following conditions:                                             */
+/*                                                                       */
+/* The above copyright notice and this permission notice shall be        */
+/* included in all copies or substantial portions of the Software.       */
+/*                                                                       */
+/* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,       */
+/* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF    */
+/* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.*/
+/* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY  */
+/* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,  */
+/* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE     */
+/* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.                */
+/*************************************************************************/
+
+#ifndef TEXTFILE_H
+#define TEXTFILE_H
+
+#include "io/resource_loader.h"
+#include "io/resource_saver.h"
+
+class TextFile : public Resource {
+
+	GDCLASS(TextFile, Resource)
+
+private:
+	String text;
+	String path;
+
+public:
+	virtual bool has_text() const;
+	virtual String get_text() const;
+	virtual void set_text(const String &p_code);
+	virtual void reload_from_file();
+
+	void set_file_path(const String &p_path) { path = p_path; }
+	Error load_text(const String &p_path);
+};
+
+#endif // TEXTFILE_H