Move and expose AutoComplete in CodeEdit

5 files changed, 941 insertions, 775 deletions

diff --git a/scene/gui/code_edit.cpp b/scene/gui/code_edit.cpp
index b2f8ece568..83f5a7bfb5 100644
--- a/scene/gui/code_edit.cpp
+++ b/scene/gui/code_edit.cpp
@@ -30,12 +30,18 @@
 
 #include "code_edit.h"
 
+#include "core/os/keyboard.h"
+#include "core/string/string_builder.h"
 #include "core/string/ustring.h"
 
 static bool _is_whitespace(char32_t c) {
 	return c == '\t' || c == ' ';
 }
 
+static bool _is_char(char32_t c) {
+	return !is_symbol(c);
+}
+
 void CodeEdit::_notification(int p_what) {
 	switch (p_what) {
 		case NOTIFICATION_THEME_CHANGED:
@@ -58,12 +64,254 @@ void CodeEdit::_notification(int p_what) {
 			folding_color = get_theme_color("code_folding_color");
 			can_fold_icon = get_theme_icon("can_fold");
 			folded_icon = get_theme_icon("folded");
+
+			code_completion_max_width = get_theme_constant("completion_max_width") * cache.font->get_char_size('x').x;
+			code_completion_max_lines = get_theme_constant("completion_lines");
+			code_completion_scroll_width = get_theme_constant("completion_scroll_width");
+			code_completion_scroll_color = get_theme_color("completion_scroll_color");
+			code_completion_background_color = get_theme_color("completion_background_color");
+			code_completion_selected_color = get_theme_color("completion_selected_color");
+			code_completion_existing_color = get_theme_color("completion_existing_color");
 		} break;
 		case NOTIFICATION_DRAW: {
+			RID ci = get_canvas_item();
+			const bool caret_visible = is_caret_visible();
+			const bool rtl = is_layout_rtl();
+			const int row_height = get_row_height();
+
+			bool code_completion_below = false;
+			if (caret_visible && code_completion_active && code_completion_options.size() > 0) {
+				Ref<StyleBox> csb = get_theme_stylebox("completion");
+
+				const int code_completion_options_count = code_completion_options.size();
+				const int lines = MIN(code_completion_options_count, code_completion_max_lines);
+				const int icon_hsep = get_theme_constant("hseparation", "ItemList");
+				const Size2 icon_area_size(row_height, row_height);
+
+				code_completion_rect.size.width = code_completion_longest_line + icon_hsep + icon_area_size.width + 2;
+				code_completion_rect.size.height = lines * row_height;
+
+				const Point2 caret_pos = get_caret_draw_pos();
+				const int total_height = csb->get_minimum_size().y + code_completion_rect.size.height;
+				if (caret_pos.y + row_height + total_height > get_size().height) {
+					code_completion_rect.position.y = (caret_pos.y - total_height - row_height) + cache.line_spacing;
+				} else {
+					code_completion_rect.position.y = caret_pos.y + (cache.line_spacing / 2.0f);
+					code_completion_below = true;
+				}
+
+				const int scroll_width = code_completion_options_count > code_completion_max_lines ? code_completion_scroll_width : 0;
+				const int code_completion_base_width = cache.font->get_string_size(code_completion_base).width;
+				if (caret_pos.x - code_completion_base_width + code_completion_rect.size.width + scroll_width > get_size().width) {
+					code_completion_rect.position.x = get_size().width - code_completion_rect.size.width - scroll_width;
+				} else {
+					code_completion_rect.position.x = caret_pos.x - code_completion_base_width;
+				}
+
+				draw_style_box(csb, Rect2(code_completion_rect.position - csb->get_offset(), code_completion_rect.size + csb->get_minimum_size() + Size2(scroll_width, 0)));
+				if (code_completion_background_color.a > 0.01) {
+					RenderingServer::get_singleton()->canvas_item_add_rect(ci, Rect2(code_completion_rect.position, code_completion_rect.size + Size2(scroll_width, 0)), code_completion_background_color);
+				}
+
+				code_completion_line_ofs = CLAMP(code_completion_current_selected - lines / 2, 0, code_completion_options_count - lines);
+				RenderingServer::get_singleton()->canvas_item_add_rect(ci, Rect2(Point2(code_completion_rect.position.x, code_completion_rect.position.y + (code_completion_current_selected - code_completion_line_ofs) * row_height), Size2(code_completion_rect.size.width, row_height)), code_completion_selected_color);
+				draw_rect(Rect2(code_completion_rect.position + Vector2(icon_area_size.x + icon_hsep, 0), Size2(MIN(code_completion_base_width, code_completion_rect.size.width - (icon_area_size.x + icon_hsep)), code_completion_rect.size.height)), code_completion_existing_color);
+
+				for (int i = 0; i < lines; i++) {
+					int l = code_completion_line_ofs + i;
+					ERR_CONTINUE(l < 0 || l >= code_completion_options_count);
+
+					Ref<TextLine> tl;
+					tl.instance();
+					tl->add_string(code_completion_options[l].display, cache.font, cache.font_size);
+
+					int yofs = (row_height - tl->get_size().y) / 2;
+					Point2 title_pos(code_completion_rect.position.x, code_completion_rect.position.y + i * row_height + yofs);
+
+					/* Draw completion icon if it is valid. */
+					const Ref<Texture2D> &icon = code_completion_options[l].icon;
+					Rect2 icon_area(code_completion_rect.position.x, code_completion_rect.position.y + i * row_height, icon_area_size.width, icon_area_size.height);
+					if (icon.is_valid()) {
+						Size2 icon_size = icon_area.size * 0.7;
+						icon->draw_rect(ci, Rect2(icon_area.position + (icon_area.size - icon_size) / 2, icon_size));
+					}
+					title_pos.x = icon_area.position.x + icon_area.size.width + icon_hsep;
+
+					tl->set_width(code_completion_rect.size.width - (icon_area_size.x + icon_hsep));
+					if (rtl) {
+						if (code_completion_options[l].default_value.get_type() == Variant::COLOR) {
+							draw_rect(Rect2(Point2(code_completion_rect.position.x, icon_area.position.y), icon_area_size), (Color)code_completion_options[l].default_value);
+						}
+						tl->set_align(HALIGN_RIGHT);
+					} else {
+						if (code_completion_options[l].default_value.get_type() == Variant::COLOR) {
+							draw_rect(Rect2(Point2(code_completion_rect.position.x + code_completion_rect.size.width - icon_area_size.x, icon_area.position.y), icon_area_size), (Color)code_completion_options[l].default_value);
+						}
+						tl->set_align(HALIGN_LEFT);
+					}
+					tl->draw(ci, title_pos, code_completion_options[l].font_color);
+				}
+
+				/* Draw a small scroll rectangle to show a position in the options. */
+				if (scroll_width) {
+					float r = (float)code_completion_max_lines / code_completion_options_count;
+					float o = (float)code_completion_line_ofs / code_completion_options_count;
+					draw_rect(Rect2(code_completion_rect.position.x + code_completion_rect.size.width, code_completion_rect.position.y + o * code_completion_rect.size.y, scroll_width, code_completion_rect.size.y * r), code_completion_scroll_color);
+				}
+			}
 		} break;
 	}
 }
 
+void CodeEdit::_gui_input(const Ref<InputEvent> &p_gui_input) {
+	Ref<InputEventMouseButton> mb = p_gui_input;
+
+	if (mb.is_valid()) {
+		if (code_completion_active && code_completion_rect.has_point(mb->get_position())) {
+			if (!mb->is_pressed()) {
+				return;
+			}
+
+			switch (mb->get_button_index()) {
+				case MOUSE_BUTTON_WHEEL_UP: {
+					if (code_completion_current_selected > 0) {
+						code_completion_current_selected--;
+						update();
+					}
+				} break;
+				case MOUSE_BUTTON_WHEEL_DOWN: {
+					if (code_completion_current_selected < code_completion_options.size() - 1) {
+						code_completion_current_selected++;
+						update();
+					}
+				} break;
+				case MOUSE_BUTTON_LEFT: {
+					code_completion_current_selected = CLAMP(code_completion_line_ofs + (mb->get_position().y - code_completion_rect.position.y) / get_row_height(), 0, code_completion_options.size() - 1);
+					if (mb->is_double_click()) {
+						confirm_code_completion();
+					}
+					update();
+				} break;
+			}
+			return;
+		}
+		cancel_code_completion();
+	}
+
+	Ref<InputEventKey> k = p_gui_input;
+	bool update_code_completion = false;
+	if (!k.is_valid()) {
+		TextEdit::_gui_input(p_gui_input);
+		return;
+	}
+
+	if (!k->is_pressed()) {
+		return;
+	}
+
+	// If a modifier has been pressed, and nothing else, return.
+	if (k->get_keycode() == KEY_CONTROL || k->get_keycode() == KEY_ALT || k->get_keycode() == KEY_SHIFT || k->get_keycode() == KEY_META) {
+		return;
+	}
+
+	/* Allow unicode handling if:              */
+	/* No Modifiers are pressed (except shift) */
+	bool allow_unicode_handling = !(k->is_command_pressed() || k->is_ctrl_pressed() || k->is_alt_pressed() || k->is_meta_pressed());
+
+	/* AUTO-COMPLETE */
+	if (code_completion_enabled && k->is_action("ui_text_completion_query", true)) {
+		request_code_completion(true);
+		accept_event();
+		return;
+	}
+
+	if (code_completion_active) {
+		if (k->is_action("ui_up", true)) {
+			if (code_completion_current_selected > 0) {
+				code_completion_current_selected--;
+			} else {
+				code_completion_current_selected = code_completion_options.size() - 1;
+			}
+			update();
+			accept_event();
+			return;
+		}
+		if (k->is_action("ui_down", true)) {
+			if (code_completion_current_selected < code_completion_options.size() - 1) {
+				code_completion_current_selected++;
+			} else {
+				code_completion_current_selected = 0;
+			}
+			update();
+			accept_event();
+			return;
+		}
+		if (k->is_action("ui_page_up", true)) {
+			code_completion_current_selected = MAX(0, code_completion_current_selected - code_completion_max_lines);
+			update();
+			accept_event();
+			return;
+		}
+		if (k->is_action("ui_page_down", true)) {
+			code_completion_current_selected = MIN(code_completion_options.size() - 1, code_completion_current_selected + code_completion_max_lines);
+			update();
+			accept_event();
+			return;
+		}
+		if (k->is_action("ui_home", true)) {
+			code_completion_current_selected = 0;
+			update();
+			accept_event();
+			return;
+		}
+		if (k->is_action("ui_end", true)) {
+			code_completion_current_selected = MIN(code_completion_options.size() - 1, code_completion_current_selected + code_completion_max_lines);
+			update();
+			accept_event();
+			return;
+		}
+		if (k->is_action("ui_text_completion_replace", true) || k->is_action("ui_text_completion_accept", true)) {
+			confirm_code_completion(k->is_action("ui_text_completion_replace", true));
+			accept_event();
+			return;
+		}
+		if (k->is_action("ui_cancel", true)) {
+			cancel_code_completion();
+			accept_event();
+			return;
+		}
+		if (k->is_action("ui_text_backspace", true)) {
+			backspace_at_cursor();
+			_filter_code_completion_candidates();
+			accept_event();
+			return;
+		}
+
+		if (k->is_action("ui_left", true) || k->is_action("ui_right", true)) {
+			update_code_completion = true;
+		} else {
+			update_code_completion = (allow_unicode_handling && k->get_unicode() >= 32);
+		}
+
+		if (!update_code_completion) {
+			cancel_code_completion();
+		}
+	}
+
+	TextEdit::_gui_input(p_gui_input);
+
+	if (update_code_completion) {
+		_filter_code_completion_candidates();
+	}
+}
+
+Control::CursorShape CodeEdit::get_cursor_shape(const Point2 &p_pos) const {
+	if ((code_completion_active && code_completion_rect.has_point(p_pos)) || (is_readonly() && (!is_selecting_enabled() || get_line_count() == 0))) {
+		return CURSOR_ARROW;
+	}
+	return TextEdit::get_cursor_shape(p_pos);
+}
+
 /* Main Gutter */
 void CodeEdit::_update_draw_main_gutter() {
 	set_gutter_draw(main_gutter, draw_breakpoints || draw_bookmarks || draw_executing_lines);
@@ -450,6 +698,274 @@ Point2 CodeEdit::get_delimiter_end_position(int p_line, int p_column) const {
 	return end_position;
 }
 
+/* Code Completion */
+void CodeEdit::set_code_completion_enabled(bool p_enable) {
+	code_completion_enabled = p_enable;
+}
+
+bool CodeEdit::is_code_completion_enabled() const {
+	return code_completion_enabled;
+}
+
+void CodeEdit::set_code_completion_prefixes(const TypedArray<String> &p_prefixes) {
+	code_completion_prefixes.clear();
+	for (int i = 0; i < p_prefixes.size(); i++) {
+		code_completion_prefixes.insert(p_prefixes[i]);
+	}
+}
+
+TypedArray<String> CodeEdit::get_code_completion_prefixes() const {
+	TypedArray<String> prefixes;
+	for (Set<String>::Element *E = code_completion_prefixes.front(); E; E = E->next()) {
+		prefixes.push_back(E->get());
+	}
+	return prefixes;
+}
+
+String CodeEdit::get_text_for_code_completion() const {
+	StringBuilder completion_text;
+	const int text_size = get_line_count();
+	for (int i = 0; i < text_size; i++) {
+		String line = get_line(i);
+
+		if (i == cursor_get_line()) {
+			completion_text += line.substr(0, cursor_get_column());
+			/* Not unicode, represents the caret. */
+			completion_text += String::chr(0xFFFF);
+			completion_text += line.substr(cursor_get_column(), line.size());
+		} else {
+			completion_text += line;
+		}
+
+		if (i != text_size - 1) {
+			completion_text += "\n";
+		}
+	}
+	return completion_text.as_string();
+}
+
+void CodeEdit::request_code_completion(bool p_force) {
+	ScriptInstance *si = get_script_instance();
+	if (si && si->has_method("_request_code_completion")) {
+		si->call("_request_code_completion", p_force);
+		return;
+	}
+
+	/* Don't re-query if all existing options are quoted types, eg path, signal. */
+	bool ignored = code_completion_active && !code_completion_options.is_empty();
+	if (ignored) {
+		ScriptCodeCompletionOption::Kind kind = ScriptCodeCompletionOption::KIND_PLAIN_TEXT;
+		const ScriptCodeCompletionOption *previous_option = nullptr;
+		for (int i = 0; i < code_completion_options.size(); i++) {
+			const ScriptCodeCompletionOption &current_option = code_completion_options[i];
+			if (!previous_option) {
+				previous_option = &current_option;
+				kind = current_option.kind;
+			}
+			if (previous_option->kind != current_option.kind) {
+				ignored = false;
+				break;
+			}
+		}
+		ignored = ignored && (kind == ScriptCodeCompletionOption::KIND_FILE_PATH || kind == ScriptCodeCompletionOption::KIND_NODE_PATH || kind == ScriptCodeCompletionOption::KIND_SIGNAL);
+	}
+
+	if (ignored) {
+		return;
+	}
+
+	if (p_force) {
+		emit_signal("request_code_completion");
+		return;
+	}
+
+	String line = get_line(cursor_get_line());
+	int ofs = CLAMP(cursor_get_column(), 0, line.length());
+
+	if (ofs > 0 && (is_in_string(cursor_get_line(), ofs) != -1 || _is_char(line[ofs - 1]) || code_completion_prefixes.has(String::chr(line[ofs - 1])))) {
+		emit_signal("request_code_completion");
+	} else if (ofs > 1 && line[ofs - 1] == ' ' && code_completion_prefixes.has(String::chr(line[ofs - 2]))) {
+		emit_signal("request_code_completion");
+	}
+}
+
+void CodeEdit::add_code_completion_option(CodeCompletionKind p_type, const String &p_display_text, const String &p_insert_text, const Color &p_text_color, const RES &p_icon, const Variant &p_value) {
+	ScriptCodeCompletionOption completion_option;
+	completion_option.kind = (ScriptCodeCompletionOption::Kind)p_type;
+	completion_option.display = p_display_text;
+	completion_option.insert_text = p_insert_text;
+	completion_option.font_color = p_text_color;
+	completion_option.icon = p_icon;
+	completion_option.default_value = p_value;
+	code_completion_option_submitted.push_back(completion_option);
+}
+
+void CodeEdit::update_code_completion_options(bool p_forced) {
+	code_completion_forced = p_forced;
+	code_completion_option_sources = code_completion_option_submitted;
+	code_completion_option_submitted.clear();
+	_filter_code_completion_candidates();
+}
+
+TypedArray<Dictionary> CodeEdit::get_code_completion_options() const {
+	if (!code_completion_active) {
+		return TypedArray<Dictionary>();
+	}
+
+	TypedArray<Dictionary> completion_options;
+	completion_options.resize(code_completion_options.size());
+	for (int i = 0; i < code_completion_options.size(); i++) {
+		Dictionary option;
+		option["kind"] = code_completion_options[i].kind;
+		option["display_text"] = code_completion_options[i].display;
+		option["insert_text"] = code_completion_options[i].insert_text;
+		option["font_color"] = code_completion_options[i].font_color;
+		option["icon"] = code_completion_options[i].icon;
+		option["default_value"] = code_completion_options[i].default_value;
+		completion_options[i] = option;
+	}
+	return completion_options;
+}
+
+Dictionary CodeEdit::get_code_completion_option(int p_index) const {
+	if (!code_completion_active) {
+		return Dictionary();
+	}
+	ERR_FAIL_INDEX_V(p_index, code_completion_options.size(), Dictionary());
+
+	Dictionary option;
+	option["kind"] = code_completion_options[p_index].kind;
+	option["display_text"] = code_completion_options[p_index].display;
+	option["insert_text"] = code_completion_options[p_index].insert_text;
+	option["font_color"] = code_completion_options[p_index].font_color;
+	option["icon"] = code_completion_options[p_index].icon;
+	option["default_value"] = code_completion_options[p_index].default_value;
+	return option;
+}
+
+int CodeEdit::get_code_completion_selected_index() const {
+	return (code_completion_active) ? code_completion_current_selected : -1;
+}
+
+void CodeEdit::set_code_completion_selected_index(int p_index) {
+	if (!code_completion_active) {
+		return;
+	}
+	ERR_FAIL_INDEX(p_index, code_completion_options.size());
+	code_completion_current_selected = p_index;
+	update();
+}
+
+void CodeEdit::confirm_code_completion(bool p_replace) {
+	if (is_readonly() || !code_completion_active) {
+		return;
+	}
+
+	ScriptInstance *si = get_script_instance();
+	if (si && si->has_method("_confirm_code_completion")) {
+		si->call("_confirm_code_completion", p_replace);
+		return;
+	}
+	begin_complex_operation();
+
+	int caret_line = cursor_get_line();
+
+	const String &insert_text = code_completion_options[code_completion_current_selected].insert_text;
+	const String &display_text = code_completion_options[code_completion_current_selected].display;
+
+	if (p_replace) {
+		/* Find end of current section */
+		const String line = get_line(caret_line);
+		int caret_col = cursor_get_column();
+		int caret_remove_line = caret_line;
+
+		bool merge_text = true;
+		int in_string = is_in_string(caret_line, caret_col);
+		if (in_string != -1) {
+			Point2 string_end = get_delimiter_end_position(caret_line, caret_col);
+			if (string_end.x != -1) {
+				merge_text = false;
+				caret_remove_line = string_end.y;
+				caret_col = string_end.x - 1;
+			}
+		}
+
+		if (merge_text) {
+			for (; caret_col < line.length(); caret_col++) {
+				if (!_is_char(line[caret_col])) {
+					break;
+				}
+			}
+		}
+
+		/* Replace. */
+		_remove_text(caret_line, cursor_get_column() - code_completion_base.length(), caret_remove_line, caret_col);
+		cursor_set_column(cursor_get_column() - code_completion_base.length(), false);
+		insert_text_at_cursor(insert_text);
+	} else {
+		/* Get first non-matching char. */
+		const String line = get_line(caret_line);
+		int caret_col = cursor_get_column();
+		int matching_chars = code_completion_base.length();
+		for (; matching_chars <= insert_text.length(); matching_chars++) {
+			if (caret_col >= line.length() || line[caret_col] != insert_text[matching_chars]) {
+				break;
+			}
+			caret_col++;
+		}
+
+		/* Remove base completion text. */
+		_remove_text(caret_line, cursor_get_column() - code_completion_base.length(), caret_line, cursor_get_column());
+		cursor_set_column(cursor_get_column() - code_completion_base.length(), false);
+
+		/* Merge with text. */
+		insert_text_at_cursor(insert_text.substr(0, code_completion_base.length()));
+		cursor_set_column(caret_col, false);
+		insert_text_at_cursor(insert_text.substr(matching_chars));
+	}
+
+	/* TODO: merge with autobrace completion, when in CodeEdit. */
+	/* Handle merging of symbols eg strings, brackets. */
+	const String line = get_line(caret_line);
+	char32_t next_char = line[cursor_get_column()];
+	char32_t last_completion_char = insert_text[insert_text.length() - 1];
+	char32_t last_completion_char_display = display_text[display_text.length() - 1];
+
+	if ((last_completion_char == '"' || last_completion_char == '\'') && (last_completion_char == next_char || last_completion_char_display == next_char)) {
+		_remove_text(caret_line, cursor_get_column(), caret_line, cursor_get_column() + 1);
+	}
+
+	if (last_completion_char == '(') {
+		if (next_char == last_completion_char) {
+			_remove_text(caret_line, cursor_get_column() - 1, caret_line, cursor_get_column());
+		} else if (auto_brace_completion_enabled) {
+			insert_text_at_cursor(")");
+			cursor_set_column(cursor_get_column() - 1);
+		}
+	} else if (last_completion_char == ')' && next_char == '(') {
+		_remove_text(caret_line, cursor_get_column() - 2, caret_line, cursor_get_column());
+		if (line[cursor_get_column() + 1] != ')') {
+			cursor_set_column(cursor_get_column() - 1);
+		}
+	}
+
+	end_complex_operation();
+
+	cancel_code_completion();
+	if (last_completion_char == '(') {
+		request_code_completion();
+	}
+}
+
+void CodeEdit::cancel_code_completion() {
+	if (!code_completion_active) {
+		return;
+	}
+	code_completion_forced = false;
+	code_completion_active = false;
+	update();
+}
+
 void CodeEdit::_bind_methods() {
 	/* Main Gutter */
 	ClassDB::bind_method(D_METHOD("_main_gutter_draw_callback"), &CodeEdit::_main_gutter_draw_callback);
@@ -525,6 +1041,42 @@ void CodeEdit::_bind_methods() {
 	ClassDB::bind_method(D_METHOD("get_delimiter_start_postion", "line", "column"), &CodeEdit::get_delimiter_start_position);
 	ClassDB::bind_method(D_METHOD("get_delimiter_end_postion", "line", "column"), &CodeEdit::get_delimiter_end_position);
 
+	/* Code Completion */
+	BIND_ENUM_CONSTANT(KIND_CLASS);
+	BIND_ENUM_CONSTANT(KIND_FUNCTION);
+	BIND_ENUM_CONSTANT(KIND_SIGNAL);
+	BIND_ENUM_CONSTANT(KIND_VARIABLE);
+	BIND_ENUM_CONSTANT(KIND_MEMBER);
+	BIND_ENUM_CONSTANT(KIND_ENUM);
+	BIND_ENUM_CONSTANT(KIND_CONSTANT);
+	BIND_ENUM_CONSTANT(KIND_NODE_PATH);
+	BIND_ENUM_CONSTANT(KIND_FILE_PATH);
+	BIND_ENUM_CONSTANT(KIND_PLAIN_TEXT);
+
+	ClassDB::bind_method(D_METHOD("get_text_for_code_completion"), &CodeEdit::get_text_for_code_completion);
+	ClassDB::bind_method(D_METHOD("request_code_completion", "force"), &CodeEdit::request_code_completion, DEFVAL(false));
+	ClassDB::bind_method(D_METHOD("add_code_completion_option", "type", "display_text", "insert_text", "text_color", "icon", "value"), &CodeEdit::add_code_completion_option, DEFVAL(Color(1, 1, 1)), DEFVAL(RES()), DEFVAL(Variant::NIL));
+	ClassDB::bind_method(D_METHOD("update_code_completion_options", "force"), &CodeEdit::update_code_completion_options);
+	ClassDB::bind_method(D_METHOD("get_code_completion_options"), &CodeEdit::get_code_completion_options);
+	ClassDB::bind_method(D_METHOD("get_code_completion_option", "index"), &CodeEdit::get_code_completion_option);
+	ClassDB::bind_method(D_METHOD("get_code_completion_selected_index"), &CodeEdit::get_code_completion_selected_index);
+	ClassDB::bind_method(D_METHOD("set_code_completion_selected_index", "index"), &CodeEdit::set_code_completion_selected_index);
+
+	ClassDB::bind_method(D_METHOD("confirm_code_completion", "replace"), &CodeEdit::confirm_code_completion, DEFVAL(false));
+	ClassDB::bind_method(D_METHOD("cancel_code_completion"), &CodeEdit::cancel_code_completion);
+
+	ClassDB::bind_method(D_METHOD("set_code_completion_enabled", "enable"), &CodeEdit::set_code_completion_enabled);
+	ClassDB::bind_method(D_METHOD("is_code_completion_enabled"), &CodeEdit::is_code_completion_enabled);
+
+	ClassDB::bind_method(D_METHOD("set_code_completion_prefixes", "prefixes"), &CodeEdit::set_code_completion_prefixes);
+	ClassDB::bind_method(D_METHOD("get_code_comletion_prefixes"), &CodeEdit::get_code_completion_prefixes);
+
+	// Overridable
+	BIND_VMETHOD(MethodInfo("_confirm_code_completion", PropertyInfo(Variant::BOOL, "replace")));
+	BIND_VMETHOD(MethodInfo("_request_code_completion", PropertyInfo(Variant::BOOL, "force")));
+	BIND_VMETHOD(MethodInfo(Variant::ARRAY, "_filter_code_completion_candidates", PropertyInfo(Variant::ARRAY, "candidates")));
+
+	/* Inspector */
 	ADD_PROPERTY(PropertyInfo(Variant::BOOL, "draw_breakpoints_gutter"), "set_draw_breakpoints_gutter", "is_drawing_breakpoints_gutter");
 
 	ADD_PROPERTY(PropertyInfo(Variant::BOOL, "draw_bookmarks"), "set_draw_bookmarks_gutter", "is_drawing_bookmarks_gutter");
@@ -540,7 +1092,13 @@ void CodeEdit::_bind_methods() {
 	ADD_PROPERTY(PropertyInfo(Variant::PACKED_STRING_ARRAY, "delimiter_strings"), "set_string_delimiters", "get_string_delimiters");
 	ADD_PROPERTY(PropertyInfo(Variant::PACKED_STRING_ARRAY, "delimiter_comments"), "set_comment_delimiters", "get_comment_delimiters");
 
+	ADD_GROUP("Code Completion", "code_completion_");
+	ADD_PROPERTY(PropertyInfo(Variant::BOOL, "code_completion_enabled"), "set_code_completion_enabled", "is_code_completion_enabled");
+	ADD_PROPERTY(PropertyInfo(Variant::PACKED_STRING_ARRAY, "code_completion_prefixes"), "set_code_completion_prefixes", "get_code_comletion_prefixes");
+
+	/* Signals */
 	ADD_SIGNAL(MethodInfo("breakpoint_toggled", PropertyInfo(Variant::INT, "line")));
+	ADD_SIGNAL(MethodInfo("request_code_completion"));
 }
 
 void CodeEdit::_gutter_clicked(int p_line, int p_gutter) {
@@ -629,7 +1187,8 @@ void CodeEdit::_update_delimiter_cache(int p_from_line, int p_to_line) {
 				delimiter_cache.write[i][0] = in_region;
 			}
 			if (i == end_line && current_end_region != in_region) {
-				end_line = MIN(end_line++, line_count);
+				end_line++;
+				end_line = MIN(end_line, line_count);
 			}
 			continue;
 		}
@@ -732,7 +1291,8 @@ void CodeEdit::_update_delimiter_cache(int p_from_line, int p_to_line) {
 		}
 
 		if (i == end_line && current_end_region != end_region) {
-			end_line = MIN(end_line++, line_count);
+			end_line++;
+			end_line = MIN(end_line, line_count);
 		}
 	}
 }
@@ -887,11 +1447,243 @@ TypedArray<String> CodeEdit::_get_delimiters(DelimiterType p_type) const {
 		if (delimiters[i].type != p_type) {
 			continue;
 		}
-		r_delimiters.push_back(delimiters[i].start_key + (delimiters[i].end_key.empty() ? "" : " " + delimiters[i].end_key));
+		r_delimiters.push_back(delimiters[i].start_key + (delimiters[i].end_key.is_empty() ? "" : " " + delimiters[i].end_key));
 	}
 	return r_delimiters;
 }
 
+/* Code Completion */
+void CodeEdit::_filter_code_completion_candidates() {
+	ScriptInstance *si = get_script_instance();
+	if (si && si->has_method("_filter_code_completion_candidates")) {
+		code_completion_options.clear();
+		code_completion_base = "";
+
+		/* Build options argument. */
+		TypedArray<Dictionary> completion_options_sources;
+		completion_options_sources.resize(code_completion_option_sources.size());
+		int i = 0;
+		for (List<ScriptCodeCompletionOption>::Element *E = code_completion_option_sources.front(); E; E = E->next()) {
+			Dictionary option;
+			option["kind"] = E->get().kind;
+			option["display_text"] = E->get().display;
+			option["insert_text"] = E->get().insert_text;
+			option["font_color"] = E->get().font_color;
+			option["icon"] = E->get().icon;
+			option["default_value"] = E->get().default_value;
+			completion_options_sources[i] = option;
+			i++;
+		}
+
+		TypedArray<Dictionary> completion_options = si->call("_filter_code_completion_candidates", completion_options_sources);
+
+		/* No options to complete, cancel. */
+		if (completion_options.size() == 0) {
+			cancel_code_completion();
+			return;
+		}
+
+		/* Convert back into options. */
+		int max_width = 0;
+		for (i = 0; i < completion_options.size(); i++) {
+			ScriptCodeCompletionOption option;
+			option.kind = (ScriptCodeCompletionOption::Kind)(int)completion_options[i].get("kind");
+			option.display = completion_options[i].get("display_text");
+			option.insert_text = completion_options[i].get("insert_text");
+			option.font_color = completion_options[i].get("font_color");
+			option.icon = completion_options[i].get("icon");
+			option.default_value = completion_options[i].get("default_value");
+
+			max_width = MAX(max_width, cache.font->get_string_size(option.display).width);
+			code_completion_options.push_back(option);
+		}
+
+		code_completion_longest_line = MIN(max_width, code_completion_max_width);
+		code_completion_current_selected = 0;
+		code_completion_active = true;
+		update();
+		return;
+	}
+
+	const int caret_line = cursor_get_line();
+	const int caret_column = cursor_get_column();
+	const String line = get_line(caret_line);
+
+	if (caret_column > 0 && line[caret_column - 1] == '(' && !code_completion_forced) {
+		cancel_code_completion();
+		return;
+	}
+
+	/* Get string status, are we in one or at the close. */
+	int in_string = is_in_string(caret_line, caret_column);
+	int first_quote_col = -1;
+	if (in_string != -1) {
+		Point2 string_start_pos = get_delimiter_start_position(caret_line, caret_column);
+		first_quote_col = (string_start_pos.y == caret_line) ? string_start_pos.x : -1;
+	} else if (caret_column > 0) {
+		if (is_in_string(caret_line, caret_column - 1) != -1) {
+			first_quote_col = caret_column - 1;
+		}
+	}
+
+	int cofs = caret_column;
+	String string_to_complete;
+	bool prev_is_word = false;
+
+	/* Cancel if we are at the close of a string. */
+	if (in_string == -1 && first_quote_col == cofs - 1) {
+		cancel_code_completion();
+		return;
+		/* In a string, therefore we are trying to complete the string text. */
+	} else if (in_string != -1 && first_quote_col != -1) {
+		int key_length = delimiters[in_string].start_key.length();
+		string_to_complete = line.substr(first_quote_col - key_length, (cofs - first_quote_col) + key_length);
+		/* If we have a space, previous word might be a keyword. eg "func |". */
+	} else if (cofs > 0 && line[cofs - 1] == ' ') {
+		int ofs = cofs - 1;
+		while (ofs >= 0 && line[ofs] == ' ') {
+			ofs--;
+		}
+		prev_is_word = _is_char(line[ofs]);
+		/* Otherwise get current word and set cofs to the start. */
+	} else {
+		int start_cofs = cofs;
+		while (cofs > 0 && line[cofs - 1] > 32 && (line[cofs - 1] == '/' || _is_char(line[cofs - 1]))) {
+			cofs--;
+		}
+		string_to_complete = line.substr(cofs, start_cofs - cofs);
+	}
+
+	/* If all else fails, check for a prefix.         */
+	/* Single space between caret and prefix is okay. */
+	bool prev_is_prefix = false;
+	if (cofs > 0 && code_completion_prefixes.has(String::chr(line[cofs - 1]))) {
+		prev_is_prefix = true;
+	} else if (cofs > 1 && line[cofs - 1] == ' ' && code_completion_prefixes.has(String::chr(line[cofs - 2]))) {
+		prev_is_prefix = true;
+	}
+
+	if (!prev_is_word && string_to_complete.is_empty() && (cofs == 0 || !prev_is_prefix)) {
+		cancel_code_completion();
+		return;
+	}
+
+	/* Filter Options. */
+	/* For now handle only tradional quoted strings. */
+	bool single_quote = in_string != -1 && first_quote_col > 0 && delimiters[in_string].start_key == "'";
+
+	code_completion_options.clear();
+	code_completion_base = string_to_complete;
+
+	Vector<ScriptCodeCompletionOption> completion_options_casei;
+	Vector<ScriptCodeCompletionOption> completion_options_subseq;
+	Vector<ScriptCodeCompletionOption> completion_options_subseq_casei;
+
+	int max_width = 0;
+	String string_to_complete_lower = string_to_complete.to_lower();
+	for (List<ScriptCodeCompletionOption>::Element *E = code_completion_option_sources.front(); E; E = E->next()) {
+		ScriptCodeCompletionOption &option = E->get();
+
+		if (single_quote && option.display.is_quoted()) {
+			option.display = option.display.unquote().quote("'");
+		}
+
+		if (in_string != -1) {
+			String quote = single_quote ? "'" : "\"";
+			option.display = option.display.unquote().quote(quote);
+			option.insert_text = option.insert_text.unquote().quote(quote);
+		}
+
+		if (option.display.length() == 0) {
+			continue;
+		}
+
+		if (string_to_complete.length() == 0) {
+			code_completion_options.push_back(option);
+			max_width = MAX(max_width, cache.font->get_string_size(option.display).width);
+			continue;
+		}
+
+		/* This code works the same as:
+
+		if (option.display.begins_with(s)) {
+			completion_options.push_back(option);
+		} else if (option.display.to_lower().begins_with(s.to_lower())) {
+			completion_options_casei.push_back(option);
+		} else if (s.is_subsequence_of(option.display)) {
+			completion_options_subseq.push_back(option);
+		} else if (s.is_subsequence_ofi(option.display)) {
+			completion_options_subseq_casei.push_back(option);
+		}
+
+		But is more performant due to being inlined and looping over the characters only once
+		*/
+
+		String display_lower = option.display.to_lower();
+
+		const char32_t *ssq = &string_to_complete[0];
+		const char32_t *ssq_lower = &string_to_complete_lower[0];
+
+		const char32_t *tgt = &option.display[0];
+		const char32_t *tgt_lower = &display_lower[0];
+
+		const char32_t *ssq_last_tgt = nullptr;
+		const char32_t *ssq_lower_last_tgt = nullptr;
+
+		for (; *tgt; tgt++, tgt_lower++) {
+			if (*ssq == *tgt) {
+				ssq++;
+				ssq_last_tgt = tgt;
+			}
+			if (*ssq_lower == *tgt_lower) {
+				ssq_lower++;
+				ssq_lower_last_tgt = tgt;
+			}
+		}
+
+		/* Matched the whole subsequence in s. */
+		if (!*ssq) {
+			/* Finished matching in the first s.length() characters. */
+			if (ssq_last_tgt == &option.display[string_to_complete.length() - 1]) {
+				code_completion_options.push_back(option);
+			} else {
+				completion_options_subseq.push_back(option);
+			}
+			max_width = MAX(max_width, cache.font->get_string_size(option.display).width);
+			/* Matched the whole subsequence in s_lower. */
+		} else if (!*ssq_lower) {
+			/* Finished matching in the first s.length() characters. */
+			if (ssq_lower_last_tgt == &option.display[string_to_complete.length() - 1]) {
+				completion_options_casei.push_back(option);
+			} else {
+				completion_options_subseq_casei.push_back(option);
+			}
+			max_width = MAX(max_width, cache.font->get_string_size(option.display).width);
+		}
+	}
+
+	code_completion_options.append_array(completion_options_casei);
+	code_completion_options.append_array(completion_options_subseq);
+	code_completion_options.append_array(completion_options_subseq_casei);
+
+	/* No options to complete, cancel. */
+	if (code_completion_options.size() == 0) {
+		cancel_code_completion();
+		return;
+	}
+
+	/* A perfect match, stop completion. */
+	if (code_completion_options.size() == 1 && string_to_complete == code_completion_options[0].display) {
+		cancel_code_completion();
+		return;
+	}
+
+	code_completion_longest_line = MIN(max_width, code_completion_max_width);
+	code_completion_current_selected = 0;
+	code_completion_active = true;
+	update();
+}
+
 void CodeEdit::_lines_edited_from(int p_from_line, int p_to_line) {
 	_update_delimiter_cache(p_from_line, p_to_line);
 
diff --git a/scene/gui/code_edit.h b/scene/gui/code_edit.h
index 808734d039..6c4b60f461 100644
--- a/scene/gui/code_edit.h
+++ b/scene/gui/code_edit.h
@@ -36,6 +36,22 @@
 class CodeEdit : public TextEdit {
 	GDCLASS(CodeEdit, TextEdit)
 
+public:
+	/* Keep enum in sync with:                                           */
+	/* /core/object/script_language.h - ScriptCodeCompletionOption::Kind */
+	enum CodeCompletionKind {
+		KIND_CLASS,
+		KIND_FUNCTION,
+		KIND_SIGNAL,
+		KIND_VARIABLE,
+		KIND_MEMBER,
+		KIND_ENUM,
+		KIND_CONSTANT,
+		KIND_NODE_PATH,
+		KIND_FILE_PATH,
+		KIND_PLAIN_TEXT,
+	};
+
 private:
 	/* Main Gutter */
 	enum MainGutterType {
@@ -144,14 +160,43 @@ private:
 	void _clear_delimiters(DelimiterType p_type);
 	TypedArray<String> _get_delimiters(DelimiterType p_type) const;
 
+	/* Code Completion */
+	bool code_completion_enabled = false;
+	bool code_completion_forced = false;
+
+	int code_completion_max_width = 0;
+	int code_completion_max_lines = 7;
+	int code_completion_scroll_width = 0;
+	Color code_completion_scroll_color = Color(0, 0, 0, 0);
+	Color code_completion_background_color = Color(0, 0, 0, 0);
+	Color code_completion_selected_color = Color(0, 0, 0, 0);
+	Color code_completion_existing_color = Color(0, 0, 0, 0);
+
+	bool code_completion_active = false;
+	Vector<ScriptCodeCompletionOption> code_completion_options;
+	int code_completion_line_ofs = 0;
+	int code_completion_current_selected = 0;
+	int code_completion_longest_line = 0;
+	Rect2i code_completion_rect;
+
+	Set<String> code_completion_prefixes;
+	List<ScriptCodeCompletionOption> code_completion_option_submitted;
+	List<ScriptCodeCompletionOption> code_completion_option_sources;
+	String code_completion_base;
+
+	void _filter_code_completion_candidates();
+
 	void _lines_edited_from(int p_from_line, int p_to_line);
 
 protected:
+	void _gui_input(const Ref<InputEvent> &p_gui_input) override;
 	void _notification(int p_what);
 
 	static void _bind_methods();
 
 public:
+	virtual CursorShape get_cursor_shape(const Point2 &p_pos = Point2i()) const override;
+
 	/* Main Gutter */
 	void set_draw_breakpoints_gutter(bool p_draw);
 	bool is_drawing_breakpoints_gutter() const;
@@ -217,8 +262,33 @@ public:
 	Point2 get_delimiter_start_position(int p_line, int p_column) const;
 	Point2 get_delimiter_end_position(int p_line, int p_column) const;
 
+	/* Code Completion */
+	void set_code_completion_enabled(bool p_enable);
+	bool is_code_completion_enabled() const;
+
+	void set_code_completion_prefixes(const TypedArray<String> &p_prefixes);
+	TypedArray<String> get_code_completion_prefixes() const;
+
+	String get_text_for_code_completion() const;
+
+	void request_code_completion(bool p_force = false);
+
+	void add_code_completion_option(CodeCompletionKind p_type, const String &p_display_text, const String &p_insert_text, const Color &p_text_color = Color(1, 1, 1), const RES &p_icon = RES(), const Variant &p_value = Variant::NIL);
+	void update_code_completion_options(bool p_forced = false);
+
+	TypedArray<Dictionary> get_code_completion_options() const;
+	Dictionary get_code_completion_option(int p_index) const;
+
+	int get_code_completion_selected_index() const;
+	void set_code_completion_selected_index(int p_index);
+
+	void confirm_code_completion(bool p_replace = false);
+	void cancel_code_completion();
+
 	CodeEdit();
 	~CodeEdit();
 };
 
+VARIANT_ENUM_CAST(CodeEdit::CodeCompletionKind);
+
 #endif // CODEEDIT_H
diff --git a/scene/gui/text_edit.cpp b/scene/gui/text_edit.cpp
index 4b199d1441..c67231d293 100644
--- a/scene/gui/text_edit.cpp
+++ b/scene/gui/text_edit.cpp
@@ -801,9 +801,6 @@ void TextEdit::_notification(int p_what) {
 				}
 			}
 
-			bool is_cursor_line_visible = false;
-			Point2 cursor_pos;
-
 			// Get the highlighted words.
 			String highlighted_text = get_selection_text();
 
@@ -987,6 +984,8 @@ void TextEdit::_notification(int p_what) {
 			}
 
 			// draw main text
+			cursor.visible = false;
+			const int caret_wrap_index = get_cursor_wrap_index();
 			int row_height = get_row_height();
 			int line = first_visible_line;
 			for (int i = 0; i < draw_amount; i++) {
@@ -1266,7 +1265,6 @@ void TextEdit::_notification(int p_what) {
 						}
 					}
 
-					const int line_top_offset_y = ofs_y;
 					ofs_y += (row_height - text_height) / 2;
 
 					const Vector<TextServer::Glyph> visual = TS->shaped_text_get_glyphs(rid);
@@ -1371,9 +1369,9 @@ void TextEdit::_notification(int p_what) {
 #else
 					int caret_width = 1;
 #endif
-					if (!clipped && cursor.line == line && ((line_wrap_index == line_wrap_amount) || (cursor.column != TS->shaped_text_get_range(rid).y))) {
-						is_cursor_line_visible = true;
-						cursor_pos.y = line_top_offset_y;
+
+					if (!clipped && cursor.line == line && line_wrap_index == caret_wrap_index) {
+						cursor.draw_pos.y = ofs_y + ldata->get_line_descent(line_wrap_index);
 
 						if (ime_text.length() == 0) {
 							Rect2 l_caret, t_caret;
@@ -1394,57 +1392,60 @@ void TextEdit::_notification(int p_what) {
 							}
 
 							if ((l_caret != Rect2() && (l_dir == TextServer::DIRECTION_AUTO || l_dir == (TextServer::Direction)input_direction)) || (t_caret == Rect2())) {
-								cursor_pos.x = char_margin + ofs_x + l_caret.position.x;
+								cursor.draw_pos.x = char_margin + ofs_x + l_caret.position.x;
 							} else {
-								cursor_pos.x = char_margin + ofs_x + t_caret.position.x;
+								cursor.draw_pos.x = char_margin + ofs_x + t_caret.position.x;
 							}
 
-							if (draw_caret && cursor_pos.x >= xmargin_beg && cursor_pos.x < xmargin_end) {
-								if (block_caret || insert_mode) {
-									//Block or underline caret, draw trailing carets at full height.
-									int h = cache.font->get_height(cache.font_size);
-
-									if (t_caret != Rect2()) {
-										if (insert_mode) {
-											t_caret.position.y = TS->shaped_text_get_descent(rid);
-											t_caret.size.y = caret_width;
-										} else {
-											t_caret.position.y = -TS->shaped_text_get_ascent(rid);
-											t_caret.size.y = h;
-										}
-										t_caret.position += Vector2(char_margin + ofs_x, ofs_y);
+							if (cursor.draw_pos.x >= xmargin_beg && cursor.draw_pos.x < xmargin_end) {
+								cursor.visible = true;
+								if (draw_caret) {
+									if (block_caret || insert_mode) {
+										//Block or underline caret, draw trailing carets at full height.
+										int h = cache.font->get_height(cache.font_size);
+
+										if (t_caret != Rect2()) {
+											if (insert_mode) {
+												t_caret.position.y = TS->shaped_text_get_descent(rid);
+												t_caret.size.y = caret_width;
+											} else {
+												t_caret.position.y = -TS->shaped_text_get_ascent(rid);
+												t_caret.size.y = h;
+											}
+											t_caret.position += Vector2(char_margin + ofs_x, ofs_y);
+
+											draw_rect(t_caret, cache.caret_color, false);
+										} else { // End of the line.
+											if (insert_mode) {
+												l_caret.position.y = TS->shaped_text_get_descent(rid);
+												l_caret.size.y = caret_width;
+											} else {
+												l_caret.position.y = -TS->shaped_text_get_ascent(rid);
+												l_caret.size.y = h;
+											}
+											l_caret.position += Vector2(char_margin + ofs_x, ofs_y);
+											l_caret.size.x = cache.font->get_char_size('M', 0, cache.font_size).x;
 
-										draw_rect(t_caret, cache.caret_color, false);
-									} else { // End of the line.
-										if (insert_mode) {
-											l_caret.position.y = TS->shaped_text_get_descent(rid);
-											l_caret.size.y = caret_width;
-										} else {
-											l_caret.position.y = -TS->shaped_text_get_ascent(rid);
-											l_caret.size.y = h;
+											draw_rect(l_caret, cache.caret_color, false);
+										}
+									} else {
+										// Normal caret.
+										if (l_caret != Rect2() && l_dir == TextServer::DIRECTION_AUTO) {
+											// Draw extra marker on top of mid caret.
+											Rect2 trect = Rect2(l_caret.position.x - 3 * caret_width, l_caret.position.y, 6 * caret_width, caret_width);
+											trect.position += Vector2(char_margin + ofs_x, ofs_y);
+											RenderingServer::get_singleton()->canvas_item_add_rect(ci, trect, cache.caret_color);
 										}
 										l_caret.position += Vector2(char_margin + ofs_x, ofs_y);
-										l_caret.size.x = cache.font->get_char_size('M', 0, cache.font_size).x;
+										l_caret.size.x = caret_width;
 
-										draw_rect(l_caret, cache.caret_color, false);
-									}
-								} else {
-									// Normal caret.
-									if (l_caret != Rect2() && l_dir == TextServer::DIRECTION_AUTO) {
-										// Draw extra marker on top of mid caret.
-										Rect2 trect = Rect2(l_caret.position.x - 3 * caret_width, l_caret.position.y, 6 * caret_width, caret_width);
-										trect.position += Vector2(char_margin + ofs_x, ofs_y);
-										RenderingServer::get_singleton()->canvas_item_add_rect(ci, trect, cache.caret_color);
-									}
-									l_caret.position += Vector2(char_margin + ofs_x, ofs_y);
-									l_caret.size.x = caret_width;
+										draw_rect(l_caret, cache.caret_color);
 
-									draw_rect(l_caret, cache.caret_color);
-
-									t_caret.position += Vector2(char_margin + ofs_x, ofs_y);
-									t_caret.size.x = caret_width;
+										t_caret.position += Vector2(char_margin + ofs_x, ofs_y);
+										t_caret.size.x = caret_width;
 
-									draw_rect(t_caret, cache.caret_color);
+										draw_rect(t_caret, cache.caret_color);
+									}
 								}
 							}
 						} else {
@@ -1464,7 +1465,7 @@ void TextEdit::_notification(int p_what) {
 									}
 									rect.size.y = caret_width;
 									draw_rect(rect, cache.caret_color);
-									cursor_pos.x = rect.position.x;
+									cursor.draw_pos.x = rect.position.x;
 								}
 							}
 							{
@@ -1483,7 +1484,7 @@ void TextEdit::_notification(int p_what) {
 									}
 									rect.size.y = caret_width * 3;
 									draw_rect(rect, cache.caret_color);
-									cursor_pos.x = rect.position.x;
+									cursor.draw_pos.x = rect.position.x;
 								}
 							}
 						}
@@ -1491,227 +1492,10 @@ void TextEdit::_notification(int p_what) {
 				}
 			}
 
-			bool completion_below = false;
-			if (completion_active && is_cursor_line_visible && completion_options.size() > 0) {
-				// Completion panel
-
-				const Ref<StyleBox> csb = get_theme_stylebox("completion");
-				const int maxlines = get_theme_constant("completion_lines");
-				const int cmax_width = get_theme_constant("completion_max_width") * cache.font->get_char_size('x', 0, cache.font_size).x;
-				const Color scrollc = get_theme_color("completion_scroll_color");
-
-				const int completion_options_size = completion_options.size();
-				const int row_count = MIN(completion_options_size, maxlines);
-				const int completion_rows_height = row_count * row_height;
-				const int completion_base_width = cache.font->get_string_size(completion_base, cache.font_size).width;
-
-				int scroll_rectangle_width = get_theme_constant("completion_scroll_width");
-				int width = 0;
-
-				// Compute max width of the panel based on the longest completion option
-				if (completion_options_size < 50) {
-					for (int i = 0; i < completion_options_size; i++) {
-						int line_width = MIN(cache.font->get_string_size(completion_options[i].display, cache.font_size).x, cmax_width);
-						if (line_width > width) {
-							width = line_width;
-						}
-					}
-				} else {
-					width = cmax_width;
-				}
-
-				// Add space for completion icons.
-				const int icon_hsep = get_theme_constant("hseparation", "ItemList");
-				const Size2 icon_area_size(row_height, row_height);
-				const int icon_area_width = icon_area_size.width + icon_hsep;
-				width += icon_area_width;
-
-				const int line_from = CLAMP(completion_index - row_count / 2, 0, completion_options_size - row_count);
-
-				for (int i = 0; i < row_count; i++) {
-					int l = line_from + i;
-					ERR_CONTINUE(l < 0 || l >= completion_options_size);
-					if (completion_options[l].default_value.get_type() == Variant::COLOR) {
-						width += icon_area_size.width;
-						break;
-					}
-				}
-
-				// Position completion panel
-				completion_rect.size.width = width + 2;
-				completion_rect.size.height = completion_rows_height;
-
-				if (completion_options_size <= maxlines) {
-					scroll_rectangle_width = 0;
-				}
-
-				const Point2 csb_offset = csb->get_offset();
-
-				const int total_width = completion_rect.size.width + csb->get_minimum_size().x + scroll_rectangle_width;
-				const int total_height = completion_rect.size.height + csb->get_minimum_size().y;
-
-				const int rect_left_border_x = cursor_pos.x - completion_base_width - icon_area_width - csb_offset.x;
-				const int rect_right_border_x = rect_left_border_x + total_width;
-
-				if (rect_left_border_x < 0) {
-					// Anchor the completion panel to the left
-					completion_rect.position.x = 0;
-				} else if (rect_right_border_x > get_size().width) {
-					// Anchor the completion panel to the right
-					completion_rect.position.x = get_size().width - total_width;
-				} else {
-					// Let the completion panel float with the cursor
-					completion_rect.position.x = rect_left_border_x;
-				}
-
-				if (cursor_pos.y + row_height + total_height > get_size().height && cursor_pos.y > total_height) {
-					// Completion panel above the cursor line
-					completion_rect.position.y = cursor_pos.y - total_height;
-				} else {
-					// Completion panel below the cursor line
-					completion_rect.position.y = cursor_pos.y + row_height;
-					completion_below = true;
-				}
-
-				draw_style_box(csb, Rect2(completion_rect.position - csb_offset, completion_rect.size + csb->get_minimum_size() + Size2(scroll_rectangle_width, 0)));
-
-				if (cache.completion_background_color.a > 0.01) {
-					RenderingServer::get_singleton()->canvas_item_add_rect(ci, Rect2(completion_rect.position, completion_rect.size + Size2(scroll_rectangle_width, 0)), cache.completion_background_color);
-				}
-				RenderingServer::get_singleton()->canvas_item_add_rect(ci, Rect2(Point2(completion_rect.position.x, completion_rect.position.y + (completion_index - line_from) * get_row_height()), Size2(completion_rect.size.width, get_row_height())), cache.completion_selected_color);
-
-				draw_rect(Rect2(completion_rect.position + Vector2(icon_area_size.x + icon_hsep, 0), Size2(MIN(completion_base_width, completion_rect.size.width - (icon_area_size.x + icon_hsep)), completion_rect.size.height)), cache.completion_existing_color);
-
-				for (int i = 0; i < row_count; i++) {
-					int l = line_from + i;
-					ERR_CONTINUE(l < 0 || l >= completion_options_size);
-
-					Ref<TextLine> tl;
-					tl.instance();
-					tl->add_string(completion_options[l].display, cache.font, cache.font_size);
-
-					int yofs = (row_height - tl->get_size().y) / 2;
-					Point2 title_pos(completion_rect.position.x, completion_rect.position.y + i * row_height + yofs);
-
-					// Draw completion icon if it is valid.
-					Ref<Texture2D> icon = completion_options[l].icon;
-					Rect2 icon_area(completion_rect.position.x, completion_rect.position.y + i * row_height, icon_area_size.width, icon_area_size.height);
-					if (icon.is_valid()) {
-						const real_t max_scale = 0.7f;
-						const real_t side = max_scale * icon_area.size.width;
-						real_t scale = MIN(side / icon->get_width(), side / icon->get_height());
-						Size2 icon_size = icon->get_size() * scale;
-						draw_texture_rect(icon, Rect2(icon_area.position + (icon_area.size - icon_size) / 2, icon_size));
-					}
-
-					title_pos.x = icon_area.position.x + icon_area.size.width + icon_hsep;
-
-					tl->set_width(completion_rect.size.width - (icon_area_size.x + icon_hsep));
-
-					if (rtl) {
-						if (completion_options[l].default_value.get_type() == Variant::COLOR) {
-							draw_rect(Rect2(Point2(completion_rect.position.x, icon_area.position.y), icon_area_size), (Color)completion_options[l].default_value);
-						}
-						tl->set_align(HALIGN_RIGHT);
-					} else {
-						if (completion_options[l].default_value.get_type() == Variant::COLOR) {
-							draw_rect(Rect2(Point2(completion_rect.position.x + completion_rect.size.width - icon_area_size.x, icon_area.position.y), icon_area_size), (Color)completion_options[l].default_value);
-						}
-						tl->set_align(HALIGN_LEFT);
-					}
-					if (cache.outline_size > 0 && cache.outline_color.a > 0) {
-						tl->draw_outline(ci, title_pos, cache.outline_size, cache.outline_color);
-					}
-					tl->draw(ci, title_pos, completion_options[l].font_color);
-				}
-
-				if (scroll_rectangle_width) {
-					// Draw a small scroll rectangle to show a position in the options.
-					float r = (float)maxlines / completion_options_size;
-					float o = (float)line_from / completion_options_size;
-					draw_rect(Rect2(completion_rect.position.x + completion_rect.size.width, completion_rect.position.y + o * completion_rect.size.y, scroll_rectangle_width, completion_rect.size.y * r), scrollc);
-				}
-
-				completion_line_ofs = line_from;
-			}
-
-			// Check to see if the hint should be drawn.
-			bool show_hint = false;
-			if (is_cursor_line_visible && completion_hint != "") {
-				if (completion_active) {
-					if (completion_below && !callhint_below) {
-						show_hint = true;
-					} else if (!completion_below && callhint_below) {
-						show_hint = true;
-					}
-				} else {
-					show_hint = true;
-				}
-			}
-
-			if (show_hint) {
-				Ref<StyleBox> sb = get_theme_stylebox("panel", "TooltipPanel");
-				Ref<Font> font = cache.font;
-				Color font_color = get_theme_color("font_color", "TooltipLabel");
-
-				int max_w = 0;
-				int sc = completion_hint.get_slice_count("\n");
-				int offset = 0;
-				int spacing = 0;
-				for (int i = 0; i < sc; i++) {
-					String l = completion_hint.get_slice("\n", i);
-					int len = font->get_string_size(l, cache.font_size).x;
-					max_w = MAX(len, max_w);
-					if (i == 0) {
-						offset = font->get_string_size(l.substr(0, l.find(String::chr(0xFFFF))), cache.font_size).x;
-					} else {
-						spacing += cache.line_spacing;
-					}
-				}
-
-				Size2 size2 = Size2(max_w, sc * font->get_height(cache.font_size) + spacing);
-				Size2 minsize = size2 + sb->get_minimum_size();
-
-				if (completion_hint_offset == -0xFFFF) {
-					completion_hint_offset = cursor_pos.x - offset;
-				}
-
-				Point2 hint_ofs = Vector2(completion_hint_offset, cursor_pos.y) + callhint_offset;
-
-				if (callhint_below) {
-					hint_ofs.y += row_height + sb->get_offset().y;
-				} else {
-					hint_ofs.y -= minsize.y + sb->get_offset().y;
-				}
-
-				draw_style_box(sb, Rect2(hint_ofs, minsize));
-
-				spacing = 0;
-				for (int i = 0; i < sc; i++) {
-					int begin = 0;
-					int end = 0;
-					String l = completion_hint.get_slice("\n", i);
-
-					if (l.find(String::chr(0xFFFF)) != -1) {
-						begin = font->get_string_size(l.substr(0, l.find(String::chr(0xFFFF))), cache.font_size).x;
-						end = font->get_string_size(l.substr(0, l.rfind(String::chr(0xFFFF))), cache.font_size).x;
-					}
-
-					Point2 round_ofs = hint_ofs + sb->get_offset() + Vector2(0, font->get_ascent(cache.font_size) + font->get_height(cache.font_size) * i + spacing);
-					round_ofs = round_ofs.round();
-					draw_string(font, round_ofs, l.replace(String::chr(0xFFFF), ""), HALIGN_LEFT, -1, cache.font_size, font_color);
-					if (end > 0) {
-						Vector2 b = hint_ofs + sb->get_offset() + Vector2(begin, font->get_height(cache.font_size) + font->get_height(cache.font_size) * i + spacing - 1);
-						draw_line(b, b + Vector2(end - begin, 0), font_color);
-					}
-					spacing += cache.line_spacing;
-				}
-			}
-
 			if (has_focus()) {
 				if (get_viewport()->get_window_id() != DisplayServer::INVALID_WINDOW_ID && DisplayServer::get_singleton()->has_feature(DisplayServer::FEATURE_IME)) {
 					DisplayServer::get_singleton()->window_set_ime_active(true, get_viewport()->get_window_id());
-					DisplayServer::get_singleton()->window_set_ime_position(get_global_position() + cursor_pos, get_viewport()->get_window_id());
+					DisplayServer::get_singleton()->window_set_ime_position(get_global_position() + cursor.draw_pos, get_viewport()->get_window_id());
 				}
 			}
 		} break;
@@ -2492,7 +2276,6 @@ void TextEdit::_move_cursor_to_line_start(bool p_select) {
 		_post_shift_selection();
 	}
 
-	_cancel_completion();
 	completion_hint = "";
 }
 
@@ -2519,7 +2302,6 @@ void TextEdit::_move_cursor_to_line_end(bool p_select) {
 	if (p_select) {
 		_post_shift_selection();
 	}
-	_cancel_completion();
 	completion_hint = "";
 }
 
@@ -2538,7 +2320,6 @@ void TextEdit::_move_cursor_page_up(bool p_select) {
 		_post_shift_selection();
 	}
 
-	_cancel_completion();
 	completion_hint = "";
 }
 
@@ -2557,7 +2338,6 @@ void TextEdit::_move_cursor_page_down(bool p_select) {
 		_post_shift_selection();
 	}
 
-	_cancel_completion();
 	completion_hint = "";
 }
 
@@ -2691,11 +2471,7 @@ void TextEdit::_move_cursor_document_end(bool p_select) {
 	}
 }
 
-void TextEdit::_handle_unicode_character(uint32_t unicode, bool p_had_selection, bool p_update_auto_complete) {
-	if (p_update_auto_complete) {
-		_reset_caret_blink_timer();
-	}
-
+void TextEdit::_handle_unicode_character(uint32_t unicode, bool p_had_selection) {
 	if (p_had_selection) {
 		_delete_selection();
 	}
@@ -2726,10 +2502,6 @@ void TextEdit::_handle_unicode_character(uint32_t unicode, bool p_had_selection,
 	if ((insert_mode && !p_had_selection) || (selection.active != p_had_selection)) {
 		end_complex_operation();
 	}
-
-	if (p_update_auto_complete) {
-		_update_completion_candidates();
-	}
 }
 
 void TextEdit::_get_mouse_pos(const Point2i &p_mouse, int &r_row, int &r_col) const {
@@ -2885,40 +2657,6 @@ void TextEdit::_gui_input(const Ref<InputEvent> &p_gui_input) {
 			// Ignore mouse clicks in IME input mode.
 			return;
 		}
-		if (completion_active && completion_rect.has_point(mpos)) {
-			if (!mb->is_pressed()) {
-				return;
-			}
-
-			if (mb->get_button_index() == MOUSE_BUTTON_WHEEL_UP) {
-				if (completion_index > 0) {
-					completion_index--;
-					completion_current = completion_options[completion_index];
-					update();
-				}
-			}
-			if (mb->get_button_index() == MOUSE_BUTTON_WHEEL_DOWN) {
-				if (completion_index < completion_options.size() - 1) {
-					completion_index++;
-					completion_current = completion_options[completion_index];
-					update();
-				}
-			}
-
-			if (mb->get_button_index() == MOUSE_BUTTON_LEFT) {
-				completion_index = CLAMP(completion_line_ofs + (mpos.y - completion_rect.position.y) / get_row_height(), 0, completion_options.size() - 1);
-
-				completion_current = completion_options[completion_index];
-				update();
-				if (mb->is_double_click()) {
-					_confirm_completion();
-				}
-			}
-			return;
-		} else {
-			_cancel_completion();
-			_cancel_code_hint();
-		}
 
 		if (mb->is_pressed()) {
 			if (mb->get_button_index() == MOUSE_BUTTON_WHEEL_UP && !mb->is_command_pressed()) {
@@ -3215,96 +2953,6 @@ void TextEdit::_gui_input(const Ref<InputEvent> &p_gui_input) {
 
 		// Check and handle all built in shortcuts.
 
-		// AUTO-COMPLETE
-
-		if (k->is_action("ui_text_completion_query", true)) {
-			query_code_comple();
-			accept_event();
-			return;
-		}
-
-		if (completion_active) {
-			if (k->is_action("ui_up", true)) {
-				if (completion_index > 0) {
-					completion_index--;
-				} else {
-					completion_index = completion_options.size() - 1;
-				}
-				completion_current = completion_options[completion_index];
-				update();
-				accept_event();
-				return;
-			}
-			if (k->is_action("ui_down", true)) {
-				if (completion_index < completion_options.size() - 1) {
-					completion_index++;
-				} else {
-					completion_index = 0;
-				}
-				completion_current = completion_options[completion_index];
-				update();
-				accept_event();
-				return;
-			}
-			if (k->is_action("ui_page_up", true)) {
-				completion_index -= get_theme_constant("completion_lines");
-				if (completion_index < 0) {
-					completion_index = 0;
-				}
-				completion_current = completion_options[completion_index];
-				update();
-				accept_event();
-				return;
-			}
-			if (k->is_action("ui_page_down", true)) {
-				completion_index += get_theme_constant("completion_lines");
-				if (completion_index >= completion_options.size()) {
-					completion_index = completion_options.size() - 1;
-				}
-				completion_current = completion_options[completion_index];
-				update();
-				accept_event();
-				return;
-			}
-			if (k->is_action("ui_home", true)) {
-				if (completion_index > 0) {
-					completion_index = 0;
-					completion_current = completion_options[completion_index];
-					update();
-				}
-				accept_event();
-				return;
-			}
-			if (k->is_action("ui_end", true)) {
-				if (completion_index < completion_options.size() - 1) {
-					completion_index = completion_options.size() - 1;
-					completion_current = completion_options[completion_index];
-					update();
-				}
-				accept_event();
-				return;
-			}
-			if (k->is_action("ui_text_completion_accept", true)) {
-				_confirm_completion();
-				accept_event();
-				return;
-			}
-			if (k->is_action("ui_cancel", true)) {
-				_cancel_completion();
-				accept_event();
-				return;
-			}
-
-			// Handle Unicode here (if no modifiers active) and update autocomplete.
-			if (k->get_unicode() >= 32) {
-				if (allow_unicode_handling && !readonly) {
-					_handle_unicode_character(k->get_unicode(), had_selection, true);
-					accept_event();
-					return;
-				}
-			}
-		}
-
 		// NEWLINES.
 		if (k->is_action("ui_text_newline_above", true)) {
 			_new_line(false, true);
@@ -3347,9 +2995,6 @@ void TextEdit::_gui_input(const Ref<InputEvent> &p_gui_input) {
 		}
 		if (k->is_action("ui_text_backspace", true)) {
 			_backspace();
-			if (completion_active) {
-				_update_completion_candidates();
-			}
 			accept_event();
 			return;
 		}
@@ -3532,7 +3177,7 @@ void TextEdit::_gui_input(const Ref<InputEvent> &p_gui_input) {
 
 		if (allow_unicode_handling && !readonly && k->get_unicode() >= 32) {
 			// Handle Unicode (if no modifiers active).
-			_handle_unicode_character(k->get_unicode(), had_selection, false);
+			_handle_unicode_character(k->get_unicode(), had_selection);
 			accept_event();
 			return;
 		}
@@ -4293,6 +3938,14 @@ void TextEdit::cursor_set_line(int p_row, bool p_adjust_viewport, bool p_can_be_
 	}
 }
 
+Point2 TextEdit::get_caret_draw_pos() const {
+	return cursor.draw_pos;
+}
+
+bool TextEdit::is_caret_visible() const {
+	return cursor.visible;
+}
+
 int TextEdit::cursor_get_column() const {
 	return cursor.column;
 }
@@ -4470,10 +4123,6 @@ Control::CursorShape TextEdit::get_cursor_shape(const Point2 &p_pos) const {
 		return CURSOR_POINTING_HAND;
 	}
 
-	if ((completion_active && completion_rect.has_point(p_pos)) || (is_readonly() && (!is_selecting_enabled() || text.size() == 0))) {
-		return CURSOR_ARROW;
-	}
-
 	int row, col;
 	_get_mouse_pos(p_pos, row, col);
 
@@ -4685,26 +4334,6 @@ String TextEdit::get_text_for_lookup_completion() {
 	return longthing;
 }
 
-String TextEdit::get_text_for_completion() {
-	String longthing;
-	int len = text.size();
-	for (int i = 0; i < len; i++) {
-		if (i == cursor.line) {
-			longthing += text[i].substr(0, cursor.column);
-			longthing += String::chr(0xFFFF); // Not unicode, represents the cursor.
-			longthing += text[i].substr(cursor.column, text[i].size());
-		} else {
-			longthing += text[i];
-		}
-
-		if (i != len - 1) {
-			longthing += "\n";
-		}
-	}
-
-	return longthing;
-};
-
 String TextEdit::get_line(int line) const {
 	if (line < 0 || line >= text.size()) {
 		return "";
@@ -4787,10 +4416,6 @@ void TextEdit::_update_caches() {
 	cache.style_normal = get_theme_stylebox("normal");
 	cache.style_focus = get_theme_stylebox("focus");
 	cache.style_readonly = get_theme_stylebox("read_only");
-	cache.completion_background_color = get_theme_color("completion_background_color");
-	cache.completion_selected_color = get_theme_color("completion_selected_color");
-	cache.completion_existing_color = get_theme_color("completion_existing_color");
-	cache.completion_font_color = get_theme_color("completion_font_color");
 	cache.font = get_theme_font("font");
 	cache.font_size = get_theme_font_size("font_size");
 	cache.outline_color = get_theme_color("font_outline_color");
@@ -6161,313 +5786,17 @@ float TextEdit::get_v_scroll_speed() const {
 	return v_scroll_speed;
 }
 
-void TextEdit::set_completion(bool p_enabled, const Vector<String> &p_prefixes) {
-	completion_prefixes.clear();
-	completion_enabled = p_enabled;
-	for (int i = 0; i < p_prefixes.size(); i++) {
-		completion_prefixes.insert(p_prefixes[i]);
-	}
-}
-
-void TextEdit::_confirm_completion() {
-	begin_complex_operation();
-
-	_remove_text(cursor.line, cursor.column - completion_base.length(), cursor.line, cursor.column);
-	cursor_set_column(cursor.column - completion_base.length(), false);
-	insert_text_at_cursor(completion_current.insert_text);
-
-	// When inserted into the middle of an existing string/method, don't add an unnecessary quote/bracket.
-	String line = text[cursor.line];
-	char32_t next_char = line[cursor.column];
-	char32_t last_completion_char = completion_current.insert_text[completion_current.insert_text.length() - 1];
-	char32_t last_completion_char_display = completion_current.display[completion_current.display.length() - 1];
-
-	if ((last_completion_char == '"' || last_completion_char == '\'') && (last_completion_char == next_char || last_completion_char_display == next_char)) {
-		_remove_text(cursor.line, cursor.column, cursor.line, cursor.column + 1);
-	}
-
-	if (last_completion_char == '(') {
-		if (next_char == last_completion_char) {
-			_base_remove_text(cursor.line, cursor.column - 1, cursor.line, cursor.column);
-		} else if (auto_brace_completion_enabled) {
-			insert_text_at_cursor(")");
-			cursor.column--;
-		}
-	} else if (last_completion_char == ')' && next_char == '(') {
-		_base_remove_text(cursor.line, cursor.column - 2, cursor.line, cursor.column);
-		if (line[cursor.column + 1] != ')') {
-			cursor.column--;
-		}
-	}
-
-	end_complex_operation();
-
-	_cancel_completion();
-
-	if (last_completion_char == '(') {
-		query_code_comple();
-	}
-}
-
 void TextEdit::_cancel_code_hint() {
 	completion_hint = "";
 	update();
 }
 
-void TextEdit::_cancel_completion() {
-	if (!completion_active) {
-		return;
-	}
-
-	completion_active = false;
-	completion_forced = false;
-	update();
-}
-
-static bool _is_completable(char32_t c) {
-	return !_is_symbol(c) || c == '"' || c == '\'';
-}
-
-void TextEdit::_update_completion_candidates() {
-	String l = text[cursor.line];
-	int cofs = CLAMP(cursor.column, 0, l.length());
-
-	String s;
-
-	// Look for keywords first.
-
-	bool inquote = false;
-	int first_quote = -1;
-	int restore_quotes = -1;
-
-	int c = cofs - 1;
-	while (c >= 0) {
-		if (l[c] == '"' || l[c] == '\'') {
-			inquote = !inquote;
-			if (first_quote == -1) {
-				first_quote = c;
-			}
-			restore_quotes = 0;
-		} else if (restore_quotes == 0 && l[c] == '$') {
-			restore_quotes = 1;
-		} else if (restore_quotes == 0 && !_is_whitespace(l[c])) {
-			restore_quotes = -1;
-		}
-		c--;
-	}
-
-	bool pre_keyword = false;
-	bool cancel = false;
-
-	if (!inquote && first_quote == cofs - 1) {
-		// No completion here.
-		cancel = true;
-	} else if (inquote && first_quote != -1) {
-		s = l.substr(first_quote, cofs - first_quote);
-	} else if (cofs > 0 && l[cofs - 1] == ' ') {
-		int kofs = cofs - 1;
-		String kw;
-		while (kofs >= 0 && l[kofs] == ' ') {
-			kofs--;
-		}
-
-		while (kofs >= 0 && l[kofs] > 32 && _is_completable(l[kofs])) {
-			kw = String::chr(l[kofs]) + kw;
-			kofs--;
-		}
-
-		pre_keyword = keywords.has(kw);
-
-	} else {
-		while (cofs > 0 && l[cofs - 1] > 32 && (l[cofs - 1] == '/' || _is_completable(l[cofs - 1]))) {
-			s = String::chr(l[cofs - 1]) + s;
-			if (l[cofs - 1] == '\'' || l[cofs - 1] == '"' || l[cofs - 1] == '$') {
-				break;
-			}
-
-			cofs--;
-		}
-	}
-
-	if (cursor.column > 0 && l[cursor.column - 1] == '(' && !pre_keyword && !completion_forced) {
-		cancel = true;
-	}
-
-	update();
-
-	bool prev_is_prefix = false;
-	if (cofs > 0 && completion_prefixes.has(String::chr(l[cofs - 1]))) {
-		prev_is_prefix = true;
-	}
-	// Check with one space before prefix, to allow indent.
-	if (cofs > 1 && l[cofs - 1] == ' ' && completion_prefixes.has(String::chr(l[cofs - 2]))) {
-		prev_is_prefix = true;
-	}
-
-	if (cancel || (!pre_keyword && s == "" && (cofs == 0 || !prev_is_prefix))) {
-		// None to complete, cancel.
-		_cancel_completion();
-		return;
-	}
-
-	completion_options.clear();
-	completion_index = 0;
-	completion_base = s;
-	Vector<float> sim_cache;
-	bool single_quote = s.begins_with("'");
-	Vector<ScriptCodeCompletionOption> completion_options_casei;
-	Vector<ScriptCodeCompletionOption> completion_options_subseq;
-	Vector<ScriptCodeCompletionOption> completion_options_subseq_casei;
-
-	String s_lower = s.to_lower();
-
-	for (List<ScriptCodeCompletionOption>::Element *E = completion_sources.front(); E; E = E->next()) {
-		ScriptCodeCompletionOption &option = E->get();
-
-		if (single_quote && option.display.is_quoted()) {
-			option.display = option.display.unquote().quote("'");
-		}
-
-		if (inquote && restore_quotes == 1 && !option.display.is_quoted()) {
-			String quote = single_quote ? "'" : "\"";
-			option.display = option.display.quote(quote);
-			option.insert_text = option.insert_text.quote(quote);
-		}
-
-		if (option.display.length() == 0) {
-			continue;
-		} else if (s.length() == 0) {
-			completion_options.push_back(option);
-		} else {
-			// This code works the same as:
-			/*
-			if (option.display.begins_with(s)) {
-				completion_options.push_back(option);
-			} else if (option.display.to_lower().begins_with(s.to_lower())) {
-				completion_options_casei.push_back(option);
-			} else if (s.is_subsequence_of(option.display)) {
-				completion_options_subseq.push_back(option);
-			} else if (s.is_subsequence_ofi(option.display)) {
-				completion_options_subseq_casei.push_back(option);
-			}
-			*/
-			// But is more performant due to being inlined and looping over the characters only once
-
-			String display_lower = option.display.to_lower();
-
-			const char32_t *ssq = &s[0];
-			const char32_t *ssq_lower = &s_lower[0];
-
-			const char32_t *tgt = &option.display[0];
-			const char32_t *tgt_lower = &display_lower[0];
-
-			const char32_t *ssq_last_tgt = nullptr;
-			const char32_t *ssq_lower_last_tgt = nullptr;
-
-			for (; *tgt; tgt++, tgt_lower++) {
-				if (*ssq == *tgt) {
-					ssq++;
-					ssq_last_tgt = tgt;
-				}
-				if (*ssq_lower == *tgt_lower) {
-					ssq_lower++;
-					ssq_lower_last_tgt = tgt;
-				}
-			}
-
-			if (!*ssq) { // Matched the whole subsequence in s
-				if (ssq_last_tgt == &option.display[s.length() - 1]) { // Finished matching in the first s.length() characters
-					completion_options.push_back(option);
-				} else {
-					completion_options_subseq.push_back(option);
-				}
-			} else if (!*ssq_lower) { // Matched the whole subsequence in s_lower
-				if (ssq_lower_last_tgt == &option.display[s.length() - 1]) { // Finished matching in the first s.length() characters
-					completion_options_casei.push_back(option);
-				} else {
-					completion_options_subseq_casei.push_back(option);
-				}
-			}
-		}
-	}
-
-	completion_options.append_array(completion_options_casei);
-	completion_options.append_array(completion_options_subseq);
-	completion_options.append_array(completion_options_subseq_casei);
-
-	if (completion_options.size() == 0) {
-		// No options to complete, cancel.
-		_cancel_completion();
-		return;
-	}
-
-	if (completion_options.size() == 1 && s == completion_options[0].display) {
-		// A perfect match, stop completion.
-		_cancel_completion();
-		return;
-	}
-
-	// The top of the list is the best match.
-	completion_current = completion_options[0];
-	completion_enabled = true;
-}
-
-void TextEdit::query_code_comple() {
-	String l = text[cursor.line];
-	int ofs = CLAMP(cursor.column, 0, l.length());
-
-	bool inquote = false;
-
-	int c = ofs - 1;
-	while (c >= 0) {
-		if (l[c] == '"' || l[c] == '\'') {
-			inquote = !inquote;
-		}
-		c--;
-	}
-
-	bool ignored = completion_active && !completion_options.is_empty();
-	if (ignored) {
-		ScriptCodeCompletionOption::Kind kind = ScriptCodeCompletionOption::KIND_PLAIN_TEXT;
-		const ScriptCodeCompletionOption *previous_option = nullptr;
-		for (int i = 0; i < completion_options.size(); i++) {
-			const ScriptCodeCompletionOption &current_option = completion_options[i];
-			if (!previous_option) {
-				previous_option = &current_option;
-				kind = current_option.kind;
-			}
-			if (previous_option->kind != current_option.kind) {
-				ignored = false;
-				break;
-			}
-		}
-		ignored = ignored && (kind == ScriptCodeCompletionOption::KIND_FILE_PATH || kind == ScriptCodeCompletionOption::KIND_NODE_PATH || kind == ScriptCodeCompletionOption::KIND_SIGNAL);
-	}
-
-	if (!ignored) {
-		if (ofs > 0 && (inquote || _is_completable(l[ofs - 1]) || completion_prefixes.has(String::chr(l[ofs - 1])))) {
-			emit_signal("request_completion");
-		} else if (ofs > 1 && l[ofs - 1] == ' ' && completion_prefixes.has(String::chr(l[ofs - 2]))) { // Make it work with a space too, it's good enough.
-			emit_signal("request_completion");
-		}
-	}
-}
-
 void TextEdit::set_code_hint(const String &p_hint) {
 	completion_hint = p_hint;
 	completion_hint_offset = -0xFFFF;
 	update();
 }
 
-void TextEdit::code_complete(const List<ScriptCodeCompletionOption> &p_strings, bool p_forced) {
-	completion_sources = p_strings;
-	completion_active = true;
-	completion_forced = p_forced;
-	completion_current = ScriptCodeCompletionOption();
-	completion_index = 0;
-	_update_completion_candidates();
-}
-
 String TextEdit::get_word_at_pos(const Vector2 &p_pos) const {
 	int row, col;
 	_get_mouse_pos(p_pos, row, col);
@@ -6915,6 +6244,8 @@ void TextEdit::_bind_methods() {
 	ClassDB::bind_method(D_METHOD("cursor_set_column", "column", "adjust_viewport"), &TextEdit::cursor_set_column, DEFVAL(true));
 	ClassDB::bind_method(D_METHOD("cursor_set_line", "line", "adjust_viewport", "can_be_hidden", "wrap_index"), &TextEdit::cursor_set_line, DEFVAL(true), DEFVAL(true), DEFVAL(0));
 
+	ClassDB::bind_method(D_METHOD("get_caret_draw_pos"), &TextEdit::get_caret_draw_pos);
+	ClassDB::bind_method(D_METHOD("is_caret_visible"), &TextEdit::is_caret_visible);
 	ClassDB::bind_method(D_METHOD("cursor_get_column"), &TextEdit::cursor_get_column);
 	ClassDB::bind_method(D_METHOD("cursor_get_line"), &TextEdit::cursor_get_line);
 	ClassDB::bind_method(D_METHOD("cursor_set_blink_enabled", "enable"), &TextEdit::cursor_set_blink_enabled);
@@ -7095,7 +6426,6 @@ void TextEdit::_bind_methods() {
 	ADD_SIGNAL(MethodInfo("cursor_changed"));
 	ADD_SIGNAL(MethodInfo("text_changed"));
 	ADD_SIGNAL(MethodInfo("lines_edited_from", PropertyInfo(Variant::INT, "from_line"), PropertyInfo(Variant::INT, "to_line")));
-	ADD_SIGNAL(MethodInfo("request_completion"));
 	ADD_SIGNAL(MethodInfo("gutter_clicked", PropertyInfo(Variant::INT, "line"), PropertyInfo(Variant::INT, "gutter")));
 	ADD_SIGNAL(MethodInfo("gutter_added"));
 	ADD_SIGNAL(MethodInfo("gutter_removed"));
diff --git a/scene/gui/text_edit.h b/scene/gui/text_edit.h
index 6ca50f3e2d..21ae9540cf 100644
--- a/scene/gui/text_edit.h
+++ b/scene/gui/text_edit.h
@@ -173,6 +173,8 @@ private:
 	};
 
 	struct Cursor {
+		Point2 draw_pos;
+		bool visible = false;
 		int last_fit_x = 0;
 		int line = 0;
 		int column = 0; ///< cursor
@@ -239,20 +241,6 @@ private:
 
 	Dictionary _get_line_syntax_highlighting(int p_line);
 
-	Set<String> completion_prefixes;
-	bool completion_enabled = false;
-	List<ScriptCodeCompletionOption> completion_sources;
-	Vector<ScriptCodeCompletionOption> completion_options;
-	bool completion_active = false;
-	bool completion_forced = false;
-	ScriptCodeCompletionOption completion_current;
-	String completion_base;
-	int completion_index = 0;
-	Rect2i completion_rect;
-	int completion_line_ofs = 0;
-	String completion_hint;
-	int completion_hint_offset = 0;
-
 	bool setting_text = false;
 
 	// data
@@ -306,10 +294,10 @@ private:
 
 	bool highlight_all_occurrences = false;
 	bool scroll_past_end_of_file_enabled = false;
-	bool auto_brace_completion_enabled = false;
 	bool brace_matching_enabled = false;
 	bool highlight_current_line = false;
 	bool auto_indent = false;
+
 	String cut_copy_line;
 	bool insert_mode = false;
 	bool select_identifiers_enabled = false;
@@ -343,6 +331,8 @@ private:
 
 	bool callhint_below = false;
 	Vector2 callhint_offset;
+	String completion_hint = "";
+	int completion_hint_offset = 0;
 
 	String search_text;
 	uint32_t search_flags = 0;
@@ -437,10 +427,7 @@ private:
 	PopupMenu *menu_ctl;
 
 	void _clear();
-	void _cancel_completion();
 	void _cancel_code_hint();
-	void _confirm_completion();
-	void _update_completion_candidates();
 
 	int _calculate_spaces_till_next_left_indent(int column);
 	int _calculate_spaces_till_next_right_indent(int column);
@@ -463,9 +450,11 @@ private:
 	void _delete_selection();
 	void _move_cursor_document_start(bool p_select);
 	void _move_cursor_document_end(bool p_select);
-	void _handle_unicode_character(uint32_t unicode, bool p_had_selection, bool p_update_auto_complete);
+	void _handle_unicode_character(uint32_t unicode, bool p_had_selection);
 
 protected:
+	bool auto_brace_completion_enabled = false;
+
 	struct Cache {
 		Ref<Texture2D> tab_icon;
 		Ref<Texture2D> space_icon;
@@ -477,10 +466,6 @@ protected:
 		int font_size = 16;
 		int outline_size = 0;
 		Color outline_color;
-		Color completion_background_color;
-		Color completion_selected_color;
-		Color completion_existing_color;
-		Color completion_font_color;
 		Color caret_color;
 		Color caret_background_color;
 		Color font_color;
@@ -505,7 +490,7 @@ protected:
 	void _insert_text(int p_line, int p_char, const String &p_text, int *r_end_line = nullptr, int *r_end_char = nullptr);
 	void _remove_text(int p_from_line, int p_from_column, int p_to_line, int p_to_column);
 	void _insert_text_at_cursor(const String &p_text);
-	void _gui_input(const Ref<InputEvent> &p_gui_input);
+	virtual void _gui_input(const Ref<InputEvent> &p_gui_input);
 	void _notification(int p_what);
 
 	void _consume_pair_symbol(char32_t ch);
@@ -695,6 +680,8 @@ public:
 	void cursor_set_column(int p_col, bool p_adjust_viewport = true);
 	void cursor_set_line(int p_row, bool p_adjust_viewport = true, bool p_can_be_hidden = true, int p_wrap_index = 0);
 
+	Point2 get_caret_draw_pos() const;
+	bool is_caret_visible() const;
 	int cursor_get_column() const;
 	int cursor_get_line() const;
 	Vector2i _get_cursor_pixel_pos(bool p_adjust_viewport = true);
@@ -811,10 +798,7 @@ public:
 
 	void set_tooltip_request_func(Object *p_obj, const StringName &p_function, const Variant &p_udata);
 
-	void set_completion(bool p_enabled, const Vector<String> &p_prefixes);
-	void code_complete(const List<ScriptCodeCompletionOption> &p_strings, bool p_forced = false);
 	void set_code_hint(const String &p_hint);
-	void query_code_comple();
 
 	void set_select_identifiers_on_hover(bool p_enable);
 	bool is_selecting_identifiers_on_hover_enabled() const;
@@ -833,7 +817,6 @@ public:
 
 	PopupMenu *get_menu() const;
 
-	String get_text_for_completion();
 	String get_text_for_lookup_completion();
 
 	virtual bool is_text_field() const override;
diff --git a/scene/resources/default_theme/default_theme.cpp b/scene/resources/default_theme/default_theme.cpp
index 3a5b3534c6..b91a5c0b7f 100644
--- a/scene/resources/default_theme/default_theme.cpp
+++ b/scene/resources/default_theme/default_theme.cpp
@@ -432,7 +432,6 @@ void fill_default_theme(Ref<Theme> &theme, const Ref<Font> &default_font, const
 	theme->set_stylebox("normal", "TextEdit", make_stylebox(tree_bg_png, 3, 3, 3, 3, 0, 0, 0, 0));
 	theme->set_stylebox("focus", "TextEdit", focus);
 	theme->set_stylebox("read_only", "TextEdit", make_stylebox(tree_bg_disabled_png, 4, 4, 4, 4, 0, 0, 0, 0));
-	theme->set_stylebox("completion", "TextEdit", make_stylebox(tree_bg_png, 3, 3, 3, 3, 0, 0, 0, 0));
 
 	theme->set_icon("tab", "TextEdit", make_icon(tab_png));
 	theme->set_icon("space", "TextEdit", make_icon(space_png));
@@ -441,11 +440,6 @@ void fill_default_theme(Ref<Theme> &theme, const Ref<Font> &default_font, const
 	theme->set_font_size("font_size", "TextEdit", -1);
 
 	theme->set_color("background_color", "TextEdit", Color(0, 0, 0, 0));
-	theme->set_color("completion_background_color", "TextEdit", Color(0.17, 0.16, 0.2));
-	theme->set_color("completion_selected_color", "TextEdit", Color(0.26, 0.26, 0.27));
-	theme->set_color("completion_existing_color", "TextEdit", Color(0.87, 0.87, 0.87, 0.13));
-	theme->set_color("completion_scroll_color", "TextEdit", control_font_pressed_color);
-	theme->set_color("completion_font_color", "TextEdit", Color(0.67, 0.67, 0.67));
 	theme->set_color("font_color", "TextEdit", control_font_color);
 	theme->set_color("font_selected_color", "TextEdit", Color(0, 0, 0));
 	theme->set_color("font_readonly_color", "TextEdit", Color(control_font_color.r, control_font_color.g, control_font_color.b, 0.5f));
@@ -458,9 +452,6 @@ void fill_default_theme(Ref<Theme> &theme, const Ref<Font> &default_font, const
 	theme->set_color("brace_mismatch_color", "TextEdit", Color(1, 0.2, 0.2));
 	theme->set_color("word_highlighted_color", "TextEdit", Color(0.8, 0.9, 0.9, 0.15));
 
-	theme->set_constant("completion_lines", "TextEdit", 7);
-	theme->set_constant("completion_max_width", "TextEdit", 50);
-	theme->set_constant("completion_scroll_width", "TextEdit", 3);
 	theme->set_constant("line_spacing", "TextEdit", 4 * scale);
 	theme->set_constant("outline_size", "TextEdit", 0);