text: /*************************************************************************/
  /*  text_editor.cpp                                                      */
  /*************************************************************************/
  /*                       This file is part of:                           */
  /*                           GODOT ENGINE                                */
  /*                      https://godotengine.org                          */
  /*************************************************************************/
  /* Copyright (c) 2007-2020 Juan Linietsky, Ariel Manzur.                 */
  /* Copyright (c) 2014-2020 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"
  
  #include "core/os/keyboard.h"
  #include "editor/editor_node.h"
  
  void TextEditor::add_syntax_highlighter(Ref<EditorSyntaxHighlighter> p_highlighter) {
  	ERR_FAIL_COND(p_highlighter.is_null());
  
  	highlighters[p_highlighter->_get_name()] = p_highlighter;
  	highlighter_menu->add_radio_check_item(p_highlighter->_get_name());
  }
  
  void TextEditor::set_syntax_highlighter(Ref<EditorSyntaxHighlighter> p_highlighter) {
  	ERR_FAIL_COND(p_highlighter.is_null());
  
  	Map<String, Ref<EditorSyntaxHighlighter>>::Element *el = highlighters.front();
  	while (el != nullptr) {
  		int highlighter_index = highlighter_menu->get_item_idx_from_text(el->key());
  		highlighter_menu->set_item_checked(highlighter_index, el->value() == p_highlighter);
  		el = el->next();
  	}
  
  	TextEdit *te = code_editor->get_text_edit();
  	te->set_syntax_highlighter(p_highlighter);
  }
  
  void TextEditor::_change_syntax_highlighter(int p_idx) {
  	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->get_syntax_highlighter()->update_cache();
  
  	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 mark_color = EDITOR_GET("text_editor/highlighting/mark_color");
  	Color bookmark_color = EDITOR_GET("text_editor/highlighting/bookmark_color");
  	Color breakpoint_color = EDITOR_GET("text_editor/highlighting/breakpoint_color");
  	Color executing_line_color = EDITOR_GET("text_editor/highlighting/executing_line_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");
  
  	text_edit->add_theme_color_override("background_color", background_color);
  	text_edit->add_theme_color_override("completion_background_color", completion_background_color);
  	text_edit->add_theme_color_override("completion_selected_color", completion_selected_color);
  	text_edit->add_theme_color_override("completion_existing_color", completion_existing_color);
  	text_edit->add_theme_color_override("completion_scroll_color", completion_scroll_color);
  	text_edit->add_theme_color_override("completion_font_color", completion_font_color);
  	text_edit->add_theme_color_override("font_color", text_color);
  	text_edit->add_theme_color_override("line_number_color", line_number_color);
  	text_edit->add_theme_color_override("caret_color", caret_color);
  	text_edit->add_theme_color_override("caret_background_color", caret_background_color);
  	text_edit->add_theme_color_override("font_color_selected", text_selected_color);
  	text_edit->add_theme_color_override("selection_color", selection_color);
  	text_edit->add_theme_color_override("brace_mismatch_color", brace_mismatch_color);
  	text_edit->add_theme_color_override("current_line_color", current_line_color);
  	text_edit->add_theme_color_override("line_length_guideline_color", line_length_guideline_color);
  	text_edit->add_theme_color_override("word_highlighted_color", word_highlighted_color);
  	text_edit->add_theme_color_override("breakpoint_color", breakpoint_color);
  	text_edit->add_theme_color_override("executing_line_color", executing_line_color);
  	text_edit->add_theme_color_override("mark_color", mark_color);
  	text_edit->add_theme_color_override("bookmark_color", bookmark_color);
  	text_edit->add_theme_color_override("code_folding_color", code_folding_color);
  	text_edit->add_theme_color_override("search_result_color", search_result_color);
  	text_edit->add_theme_color_override("search_result_border_color", search_result_border_color);
  
  	text_edit->add_theme_constant_override("line_spacing", EDITOR_DEF("text_editor/theme/line_spacing", 6));
  }
  
  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()) {
  			if (text_file->get_path().empty()) {
  				name = TTR("[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<Texture2D> TextEditor::get_theme_icon() {
  	return EditorNode::get_singleton()->get_object_icon(text_file.ptr(), "");
  }
  
  RES TextEditor::get_edited_resource() const {
  	return text_file;
  }
  
  void TextEditor::set_edited_resource(const RES &p_res) {
  	ERR_FAIL_COND(text_file.is_valid());
  	ERR_FAIL_COND(p_res.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::enable_editor() {
  	if (editor_enabled) {
  		return;
  	}
  
  	editor_enabled = true;
  
  	_load_theme_settings();
  }
  
  void TextEditor::add_callback(const String &p_function, PackedStringArray 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->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::_update_bookmark_list() {
  	bookmarks_menu->clear();
  
  	bookmarks_menu->add_shortcut(ED_GET_SHORTCUT("script_text_editor/toggle_bookmark"), BOOKMARK_TOGGLE);
  	bookmarks_menu->add_shortcut(ED_GET_SHORTCUT("script_text_editor/remove_all_bookmarks"), BOOKMARK_REMOVE_ALL);
  	bookmarks_menu->add_shortcut(ED_GET_SHORTCUT("script_text_editor/goto_next_bookmark"), BOOKMARK_GOTO_NEXT);
  	bookmarks_menu->add_shortcut(ED_GET_SHORTCUT("script_text_editor/goto_previous_bookmark"), BOOKMARK_GOTO_PREV);
  
  	Array bookmark_list = code_editor->get_text_edit()->get_bookmarks_array();
  	if (bookmark_list.size() == 0) {
  		return;
  	}
  
  	bookmarks_menu->add_separator();
  
  	for (int i = 0; i < bookmark_list.size(); i++) {
  		String line = code_editor->get_text_edit()->get_line(bookmark_list[i]).strip_edges();
  		// Limit the size of the line if too big.
  		if (line.length() > 50) {
  			line = line.substr(0, 50);
  		}
  
  		bookmarks_menu->add_item(String::num((int)bookmark_list[i] + 1) + " - \"" + line + "\"");
  		bookmarks_menu->set_item_metadata(bookmarks_menu->get_item_count() - 1, bookmark_list[i]);
  	}
  }
  
  void TextEditor::_bookmark_item_pressed(int p_idx) {
  	if (p_idx < 4) { // Any item before the separator.
  		_edit_option(bookmarks_menu->get_item_id(p_idx));
  	} else {
  		code_editor->goto_line(bookmarks_menu->get_item_metadata(p_idx));
  	}
  }
  
  void TextEditor::apply_code() {
  	text_file->set_text(code_editor->get_text_edit()->get_text());
  }
  
  bool TextEditor::is_unsaved() {
  	const bool unsaved =
  			code_editor->get_text_edit()->get_version() != code_editor->get_text_edit()->get_saved_version() ||
  			text_file->get_path().empty(); // In memory.
  	return unsaved;
  }
  
  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);
  
  	Dictionary state = p_state;
  	if (state.has("syntax_highlighter")) {
  		int idx = highlighter_menu->get_item_idx_from_text(state["syntax_highlighter"]);
  		if (idx >= 0) {
  			_change_syntax_highlighter(idx);
  		}
  	}
  
  	ensure_focus();
  }
  
  void TextEditor::trim_trailing_whitespace() {
  	code_editor->trim_trailing_whitespace();
  }
  
  void TextEditor::insert_final_newline() {
  	code_editor->insert_final_newline();
  }
  
  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::goto_line_selection(int p_line, int p_begin, int p_end) {
  	code_editor->goto_line_selection(p_line, p_begin, p_end);
  }
  
  void TextEditor::set_executing_line(int p_line) {
  	code_editor->set_executing_line(p_line);
  }
  
  void TextEditor::clear_executing_line() {
  	code_editor->clear_executing_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::_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->clone_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_IN_FILES: {
  			String selected_text = code_editor->get_text_edit()->get_selection_text();
  
  			// Yep, because it doesn't make sense to instance this dialog for every single script open...
  			// So this will be delegated to the ScriptEditor.
  			emit_signal("search_in_files_requested", selected_text);
  		} break;
  		case REPLACE_IN_FILES: {
  			String selected_text = code_editor->get_text_edit()->get_selection_text();
  
  			emit_signal("replace_in_files_requested", selected_text);
  		} break;
  		case SEARCH_GOTO_LINE: {
  			goto_line_dialog->popup_find_line(tx);
  		} break;
  		case BOOKMARK_TOGGLE: {
  			code_editor->toggle_bookmark();
  		} break;
  		case BOOKMARK_GOTO_NEXT: {
  			code_editor->goto_next_bookmark();
  		} break;
  		case BOOKMARK_GOTO_PREV: {
  			code_editor->goto_prev_bookmark();
  		} break;
  		case BOOKMARK_REMOVE_ALL: {
  			code_editor->remove_all_bookmarks();
  		} break;
  	}
  }
  
  void TextEditor::_convert_case(CodeTextEditor::CaseStyle p_case) {
  	code_editor->convert_case(p_case);
  }
  
  void TextEditor::_bind_methods() {
  	ClassDB::bind_method(D_METHOD("add_syntax_highlighter", "highlighter"), &TextEditor::add_syntax_highlighter);
  }
  
  static ScriptEditorBase *create_editor(const RES &p_resource) {
  	if (Object::cast_to<TextFile>(*p_resource)) {
  		return memnew(TextEditor);
  	}
  	return nullptr;
  }
  
  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 selected 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, get_local_mouse_position());
  			}
  		}
  	}
  
  	Ref<InputEventKey> k = ev;
  	if (k.is_valid() && k->is_pressed() && k->get_keycode() == KEY_MENU) {
  		TextEdit *tx = code_editor->get_text_edit();
  		int line = tx->cursor_get_line();
  		_make_context_menu(tx->is_selection_active(), tx->can_fold(line), tx->is_folded(line), (get_global_transform().inverse() * tx->get_global_transform()).xform(tx->_get_cursor_pixel_pos()));
  		context_menu->grab_focus();
  	}
  }
  
  void TextEditor::_make_context_menu(bool p_selection, bool p_can_fold, bool p_is_folded, Vector2 p_position) {
  	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);
  	context_menu->add_shortcut(ED_GET_SHORTCUT("script_text_editor/toggle_bookmark"), BOOKMARK_TOGGLE);
  
  	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(p_position));
  	context_menu->set_size(Vector2(1, 1));
  	context_menu->popup();
  }
  
  TextEditor::TextEditor() {
  	code_editor = memnew(CodeTextEditor);
  	add_child(code_editor);
  	code_editor->add_theme_constant_override("separation", 0);
  	code_editor->connect("load_theme_settings", callable_mp(this, &TextEditor::_load_theme_settings));
  	code_editor->connect("validate_script", callable_mp(this, &TextEditor::_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", callable_mp(this, &TextEditor::_text_edit_gui_input));
  
  	context_menu = memnew(PopupMenu);
  	add_child(context_menu);
  	context_menu->connect("id_pressed", callable_mp(this, &TextEditor::_edit_option));
  
  	edit_hb = memnew(HBoxContainer);
  
  	search_menu = memnew(MenuButton);
  	edit_hb->add_child(search_menu);
  	search_menu->set_text(TTR("Search"));
  	search_menu->set_switch_on_hover(true);
  	search_menu->get_popup()->connect("id_pressed", callable_mp(this, &TextEditor::_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/find_in_files"), SEARCH_IN_FILES);
  	search_menu->get_popup()->add_shortcut(ED_GET_SHORTCUT("script_text_editor/replace_in_files"), REPLACE_IN_FILES);
  
  	edit_menu = memnew(MenuButton);
  	edit_hb->add_child(edit_menu);
  	edit_menu->set_text(TTR("Edit"));
  	edit_menu->set_switch_on_hover(true);
  	edit_menu->get_popup()->connect("id_pressed", callable_mp(this, &TextEditor::_edit_option));
  
  	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", callable_mp(this, &TextEditor::_edit_option));
  
  	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->connect("id_pressed", callable_mp(this, &TextEditor::_change_syntax_highlighter));
  
  	Ref<EditorPlainTextSyntaxHighlighter> plain_highlighter;
  	plain_highlighter.instance();
  	add_syntax_highlighter(plain_highlighter);
  
  	Ref<EditorStandardSyntaxHighlighter> highlighter;
  	highlighter.instance();
  	add_syntax_highlighter(highlighter);
  	set_syntax_highlighter(plain_highlighter);
  
  	MenuButton *goto_menu = memnew(MenuButton);
  	edit_hb->add_child(goto_menu);
  	goto_menu->set_text(TTR("Go To"));
  	goto_menu->set_switch_on_hover(true);
  	goto_menu->get_popup()->connect("id_pressed", callable_mp(this, &TextEditor::_edit_option));
  
  	goto_menu->get_popup()->add_shortcut(ED_GET_SHORTCUT("script_text_editor/goto_line"), SEARCH_GOTO_LINE);
  	goto_menu->get_popup()->add_separator();
  
  	bookmarks_menu = memnew(PopupMenu);
  	bookmarks_menu->set_name("Bookmarks");
  	goto_menu->get_popup()->add_child(bookmarks_menu);
  	goto_menu->get_popup()->add_submenu_item(TTR("Bookmarks"), "Bookmarks");
  	_update_bookmark_list();
  	bookmarks_menu->connect("about_to_popup", callable_mp(this, &TextEditor::_update_bookmark_list));
  	bookmarks_menu->connect("index_pressed", callable_mp(this, &TextEditor::_bookmark_item_pressed));
  
  	goto_line_dialog = memnew(GotoLineDialog);
  	add_child(goto_line_dialog);
  
  	code_editor->get_text_edit()->set_drag_forwarding(this);
  }
  
  TextEditor::~TextEditor() {
  	highlighters.clear();
  }
  
  void TextEditor::validate() {
  }
  