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godot/editor/plugins/text_editor.cpp

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/*************************************************************************/
/* text_editor.cpp */
/*************************************************************************/
/* This file is part of: */
/* GODOT ENGINE */
/* https://godotengine.org */
/*************************************************************************/
/* Copyright (c) 2007-2019 Juan Linietsky, Ariel Manzur. */
/* Copyright (c) 2014-2019 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 "editor_node.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", 6));
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() {
return EditorNode::get_singleton()->get_object_icon(text_file.operator->(), "");
}
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);
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);
}
}
}
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();
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->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_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 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);
}
}
}
}
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);
}
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