Added find & replace in files

editor/find_in_files.cpp

@@ -0,0 +1,829 @@
+/*************************************************************************/
+/*  find_in_files.cpp                                                    */
+/*************************************************************************/
+/*                       This file is part of:                           */
+/*                           GODOT ENGINE                                */
+/*                      https://godotengine.org                          */
+/*************************************************************************/
+/* Copyright (c) 2007-2018 Juan Linietsky, Ariel Manzur.                 */
+/* Copyright (c) 2014-2018 Godot Engine contributors (cf. AUTHORS.md)    */
+/*                                                                       */
+/* Permission is hereby granted, free of charge, to any person obtaining */
+/* a copy of this software and associated documentation files (the       */
+/* "Software"), to deal in the Software without restriction, including   */
+/* without limitation the rights to use, copy, modify, merge, publish,   */
+/* distribute, sublicense, and/or sell copies of the Software, and to    */
+/* permit persons to whom the Software is furnished to do so, subject to */
+/* the following conditions:                                             */
+/*                                                                       */
+/* The above copyright notice and this permission notice shall be        */
+/* included in all copies or substantial portions of the Software.       */
+/*                                                                       */
+/* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,       */
+/* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF    */
+/* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.*/
+/* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY  */
+/* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,  */
+/* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE     */
+/* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.                */
+/*************************************************************************/
+
+#include "find_in_files.h"
+#include "core/os/dir_access.h"
+#include "core/os/os.h"
+#include "editor_scale.h"
+#include "scene/gui/box_container.h"
+#include "scene/gui/button.h"
+#include "scene/gui/check_box.h"
+#include "scene/gui/file_dialog.h"
+#include "scene/gui/grid_container.h"
+#include "scene/gui/item_list.h"
+#include "scene/gui/label.h"
+#include "scene/gui/line_edit.h"
+#include "scene/gui/progress_bar.h"
+
+#define ROOT_PREFIX "res://"
+
+const char *FindInFiles::SIGNAL_RESULT_FOUND = "result_found";
+const char *FindInFiles::SIGNAL_FINISHED = "finished";
+
+// TODO Would be nice in Vector and PoolVectors
+template <typename T>
+inline void pop_back(T &container) {
+	container.resize(container.size() - 1);
+}
+
+// TODO Copied from TextEdit private, would be nice to extract it in a single place
+static bool is_text_char(CharType c) {
+	return (c >= 'a' && c <= 'z') || (c >= 'A' && c <= 'Z') || (c >= '0' && c <= '9') || c == '_';
+}
+
+FindInFiles::FindInFiles() {
+	_root_prefix = ROOT_PREFIX;
+	_extension_filter.insert("gd");
+	_extension_filter.insert("cs");
+	_searching = false;
+	_whole_words = true;
+	_match_case = true;
+}
+
+void FindInFiles::set_search_text(String p_pattern) {
+	_pattern = p_pattern;
+}
+
+void FindInFiles::set_whole_words(bool p_whole_word) {
+	_whole_words = p_whole_word;
+}
+
+void FindInFiles::set_match_case(bool p_match_case) {
+	_match_case = p_match_case;
+}
+
+void FindInFiles::set_folder(String folder) {
+	_root_dir = folder;
+}
+
+void FindInFiles::set_filter(const Set<String> &exts) {
+	_extension_filter = exts;
+}
+
+void FindInFiles::_notification(int p_notification) {
+	if (p_notification == NOTIFICATION_PROCESS) {
+		_process();
+	}
+}
+
+void FindInFiles::start() {
+	if (_pattern == "") {
+		print_line("Nothing to search, pattern is empty");
+		emit_signal(SIGNAL_FINISHED);
+		return;
+	}
+	if (_extension_filter.size() == 0) {
+		print_line("Nothing to search, filter matches no files");
+		emit_signal(SIGNAL_FINISHED);
+		return;
+	}
+
+	// Init search
+	_current_dir = "";
+	PoolStringArray init_folder;
+	init_folder.append(_root_dir);
+	_folders_stack.push_back(init_folder);
+
+	_initial_files_count = 0;
+
+	_searching = true;
+	set_process(true);
+}
+
+void FindInFiles::stop() {
+	_searching = false;
+	_current_dir = "";
+	set_process(false);
+}
+
+void FindInFiles::_process() {
+	// This part can be moved to a thread if needed
+
+	OS &os = *OS::get_singleton();
+	float duration = 0.0;
+	while (duration < 1.0 / 120.0) {
+		float time_before = os.get_ticks_msec();
+		_iterate();
+		duration += (os.get_ticks_msec() - time_before);
+	}
+}
+
+void FindInFiles::_iterate() {
+
+	if (_folders_stack.size() != 0) {
+
+		// Scan folders first so we can build a list of files and have progress info later
+
+		PoolStringArray &folders_to_scan = _folders_stack[_folders_stack.size() - 1];
+
+		if (folders_to_scan.size() != 0) {
+			// Scan one folder below
+
+			String folder_name = folders_to_scan[folders_to_scan.size() - 1];
+			pop_back(folders_to_scan);
+
+			_current_dir = _current_dir.plus_file(folder_name);
+
+			PoolStringArray sub_dirs;
+			_scan_dir(_root_prefix + _current_dir, sub_dirs);
+
+			if (sub_dirs.size() != 0) {
+				_folders_stack.push_back(sub_dirs);
+			}
+
+		} else {
+			// Go back one level
+
+			pop_back(_folders_stack);
+			_current_dir = _current_dir.get_base_dir();
+
+			if (_folders_stack.size() == 0) {
+				// All folders scanned
+				_initial_files_count = _files_to_scan.size();
+			}
+		}
+
+	} else if (_files_to_scan.size() != 0) {
+
+		// Then scan files
+
+		String fpath = _files_to_scan[_files_to_scan.size() - 1];
+		pop_back(_files_to_scan);
+		_scan_file(_root_prefix + fpath);
+
+	} else {
+		print_line("Search complete");
+		set_process(false);
+		_current_dir = "";
+		_searching = false;
+		emit_signal(SIGNAL_FINISHED);
+	}
+}
+
+float FindInFiles::get_progress() const {
+	if (_initial_files_count != 0) {
+		return static_cast<float>(_initial_files_count - _files_to_scan.size()) / static_cast<float>(_initial_files_count);
+	}
+	return 0;
+}
+
+void FindInFiles::_scan_dir(String path, PoolStringArray &out_folders) {
+
+	DirAccess *dir = DirAccess::open(path);
+	if (dir == NULL) {
+		print_line("Cannot open directory! " + path);
+		return;
+	}
+
+	//print_line(String("Scanning ") + path);
+
+	dir->list_dir_begin();
+
+	for (int i = 0; i < 1000; ++i) {
+		String file = dir->get_next();
+
+		if (file == "")
+			break;
+
+		// Ignore special dirs and hidden dirs (such as .git and .import)
+		if (file == "." || file == ".." || file.begins_with("."))
+			continue;
+
+		if (dir->current_is_dir())
+			out_folders.append(file);
+
+		else {
+			String file_ext = file.get_extension();
+			if (_extension_filter.has(file_ext)) {
+				_files_to_scan.push_back(file);
+			}
+		}
+	}
+}
+
+void FindInFiles::_scan_file(String fpath) {
+
+	FileAccess *f = FileAccess::open(fpath, FileAccess::READ);
+	if (f == NULL) {
+		f->close();
+		print_line(String("Cannot open file ") + fpath);
+		return;
+	}
+
+	int line_number = 0;
+
+	while (!f->eof_reached()) {
+
+		// line number starts at 1
+		++line_number;
+
+		int begin = 0;
+		int end = 0;
+
+		String line = f->get_line();
+
+		// Find all occurrences in the current line
+		while (true) {
+			begin = _match_case ? line.find(_pattern, end) : line.findn(_pattern, end);
+
+			if (begin == -1)
+				break;
+
+			end = begin + _pattern.length();
+
+			if (_whole_words) {
+				if (begin > 0 && is_text_char(line[begin - 1])) {
+					continue;
+				}
+				if (end < line.size() && is_text_char(line[end])) {
+					continue;
+				}
+			}
+
+			emit_signal(SIGNAL_RESULT_FOUND, fpath, line_number, begin, end, line);
+		}
+	}
+
+	f->close();
+}
+
+void FindInFiles::_bind_methods() {
+
+	ADD_SIGNAL(MethodInfo(SIGNAL_RESULT_FOUND,
+			PropertyInfo(Variant::STRING, "path"),
+			PropertyInfo(Variant::INT, "line_number"),
+			PropertyInfo(Variant::INT, "begin"),
+			PropertyInfo(Variant::INT, "end"),
+			PropertyInfo(Variant::STRING, "text")));
+
+	ADD_SIGNAL(MethodInfo(SIGNAL_FINISHED));
+}
+
+//-----------------------------------------------------------------------------
+const char *FindInFilesDialog::SIGNAL_FIND_REQUESTED = "find_requested";
+const char *FindInFilesDialog::SIGNAL_REPLACE_REQUESTED = "replace_requested";
+
+FindInFilesDialog::FindInFilesDialog() {
+
+	set_custom_minimum_size(Size2(400, 190));
+	set_resizable(true);
+	set_title(TTR("Find in files"));
+
+	VBoxContainer *vbc = memnew(VBoxContainer);
+	vbc->set_anchor_and_margin(MARGIN_LEFT, ANCHOR_BEGIN, 8 * EDSCALE);
+	vbc->set_anchor_and_margin(MARGIN_TOP, ANCHOR_BEGIN, 8 * EDSCALE);
+	vbc->set_anchor_and_margin(MARGIN_RIGHT, ANCHOR_END, -8 * EDSCALE);
+	vbc->set_anchor_and_margin(MARGIN_BOTTOM, ANCHOR_END, -8 * EDSCALE);
+	add_child(vbc);
+
+	GridContainer *gc = memnew(GridContainer);
+	gc->set_columns(2);
+	vbc->add_child(gc);
+
+	Label *find_label = memnew(Label);
+	find_label->set_text(TTR("Find: "));
+	gc->add_child(find_label);
+
+	_search_text_line_edit = memnew(LineEdit);
+	_search_text_line_edit->set_h_size_flags(SIZE_EXPAND_FILL);
+	_search_text_line_edit->connect("text_changed", this, "_on_search_text_modified");
+	_search_text_line_edit->connect("text_entered", this, "_on_search_text_entered");
+	gc->add_child(_search_text_line_edit);
+
+	{
+		Control *placeholder = memnew(Control);
+		gc->add_child(placeholder);
+	}
+
+	{
+		HBoxContainer *hbc = memnew(HBoxContainer);
+
+		_whole_words_checkbox = memnew(CheckBox);
+		_whole_words_checkbox->set_text(TTR("Whole words"));
+		_whole_words_checkbox->set_pressed(true);
+		hbc->add_child(_whole_words_checkbox);
+
+		_match_case_checkbox = memnew(CheckBox);
+		_match_case_checkbox->set_text(TTR("Match case"));
+		_match_case_checkbox->set_pressed(true);
+		hbc->add_child(_match_case_checkbox);
+
+		gc->add_child(hbc);
+	}
+
+	Label *folder_label = memnew(Label);
+	folder_label->set_text(TTR("Folder: "));
+	gc->add_child(folder_label);
+
+	{
+		HBoxContainer *hbc = memnew(HBoxContainer);
+
+		Label *prefix_label = memnew(Label);
+		prefix_label->set_text(ROOT_PREFIX);
+		hbc->add_child(prefix_label);
+
+		_folder_line_edit = memnew(LineEdit);
+		_folder_line_edit->set_h_size_flags(SIZE_EXPAND_FILL);
+		hbc->add_child(_folder_line_edit);
+
+		Button *folder_button = memnew(Button);
+		folder_button->set_text("...");
+		folder_button->connect("pressed", this, "_on_folder_button_pressed");
+		hbc->add_child(folder_button);
+
+		_folder_dialog = memnew(FileDialog);
+		_folder_dialog->set_mode(FileDialog::MODE_OPEN_DIR);
+		_folder_dialog->connect("dir_selected", this, "_on_folder_selected");
+		add_child(_folder_dialog);
+
+		gc->add_child(hbc);
+	}
+
+	Label *filter_label = memnew(Label);
+	filter_label->set_text(TTR("Filter: "));
+	gc->add_child(filter_label);
+
+	{
+		HBoxContainer *hbc = memnew(HBoxContainer);
+
+		Vector<String> exts;
+		exts.push_back("gd");
+		exts.push_back("cs");
+
+		for (int i = 0; i < exts.size(); ++i) {
+			CheckBox *cb = memnew(CheckBox);
+			cb->set_text(exts[i]);
+			cb->set_pressed(true);
+			hbc->add_child(cb);
+			_filters.push_back(cb);
+		}
+
+		gc->add_child(hbc);
+	}
+
+	{
+		Control *placeholder = memnew(Control);
+		placeholder->set_custom_minimum_size(Size2(0, EDSCALE * 16));
+		vbc->add_child(placeholder);
+	}
+
+	{
+		HBoxContainer *hbc = memnew(HBoxContainer);
+		hbc->set_alignment(HBoxContainer::ALIGN_CENTER);
+
+		_find_button = memnew(Button);
+		_find_button->set_text(TTR("Find..."));
+		_find_button->connect("pressed", this, "_on_find_button_pressed");
+		_find_button->set_disabled(true);
+		hbc->add_child(_find_button);
+
+		{
+			Control *placeholder = memnew(Control);
+			placeholder->set_custom_minimum_size(Size2(EDSCALE * 16, 0));
+			hbc->add_child(placeholder);
+		}
+
+		_replace_button = memnew(Button);
+		_replace_button->set_text(TTR("Replace..."));
+		_replace_button->connect("pressed", this, "_on_replace_button_pressed");
+		_replace_button->set_disabled(true);
+		hbc->add_child(_replace_button);
+
+		{
+			Control *placeholder = memnew(Control);
+			placeholder->set_custom_minimum_size(Size2(EDSCALE * 16, 0));
+			hbc->add_child(placeholder);
+		}
+
+		Button *cancel_button = memnew(Button);
+		cancel_button->set_text(TTR("Cancel"));
+		cancel_button->connect("pressed", this, "hide");
+		hbc->add_child(cancel_button);
+
+		vbc->add_child(hbc);
+	}
+}
+
+void FindInFilesDialog::set_search_text(String text) {
+	_search_text_line_edit->set_text(text);
+}
+
+String FindInFilesDialog::get_search_text() const {
+	String text = _search_text_line_edit->get_text();
+	return text.strip_edges();
+}
+
+bool FindInFilesDialog::is_match_case() const {
+	return _match_case_checkbox->is_pressed();
+}
+
+bool FindInFilesDialog::is_whole_words() const {
+	return _whole_words_checkbox->is_pressed();
+}
+
+String FindInFilesDialog::get_folder() const {
+	String text = _folder_line_edit->get_text();
+	return text.strip_edges();
+}
+
+Set<String> FindInFilesDialog::get_filter() const {
+	Set<String> filters;
+	for (int i = 0; i < _filters.size(); ++i) {
+		CheckBox *cb = _filters[i];
+		if (cb->is_pressed()) {
+			filters.insert(_filters[i]->get_text());
+		}
+	}
+	return filters;
+}
+
+void FindInFilesDialog::_notification(int p_what) {
+	if (p_what == NOTIFICATION_VISIBILITY_CHANGED) {
+		if (is_visible()) {
+			// Doesn't work more than once if not deferred...
+			_search_text_line_edit->call_deferred("grab_focus");
+			_search_text_line_edit->select_all();
+		}
+	}
+}
+
+void FindInFilesDialog::_on_folder_button_pressed() {
+	_folder_dialog->popup_centered_ratio();
+}
+
+void FindInFilesDialog::_on_find_button_pressed() {
+	emit_signal(SIGNAL_FIND_REQUESTED);
+	hide();
+}
+
+void FindInFilesDialog::_on_replace_button_pressed() {
+	emit_signal(SIGNAL_REPLACE_REQUESTED);
+	hide();
+}
+
+void FindInFilesDialog::_on_search_text_modified(String text) {
+
+	ERR_FAIL_COND(!_find_button);
+	ERR_FAIL_COND(!_replace_button);
+
+	_find_button->set_disabled(get_search_text().empty());
+	_replace_button->set_disabled(get_search_text().empty());
+}
+
+void FindInFilesDialog::_on_search_text_entered(String text) {
+	// This allows to trigger a global search without leaving the keyboard
+	if (!_find_button->is_disabled())
+		_on_find_button_pressed();
+}
+
+void FindInFilesDialog::_on_folder_selected(String path) {
+	int i = path.find("://");
+	if (i != -1)
+		path = path.right(i + 3);
+	_folder_line_edit->set_text(path);
+}
+
+void FindInFilesDialog::_bind_methods() {
+
+	ClassDB::bind_method("_on_folder_button_pressed", &FindInFilesDialog::_on_folder_button_pressed);
+	ClassDB::bind_method("_on_find_button_pressed", &FindInFilesDialog::_on_find_button_pressed);
+	ClassDB::bind_method("_on_replace_button_pressed", &FindInFilesDialog::_on_replace_button_pressed);
+	ClassDB::bind_method("_on_folder_selected", &FindInFilesDialog::_on_folder_selected);
+	ClassDB::bind_method("_on_search_text_modified", &FindInFilesDialog::_on_search_text_modified);
+	ClassDB::bind_method("_on_search_text_entered", &FindInFilesDialog::_on_search_text_entered);
+
+	ADD_SIGNAL(MethodInfo(SIGNAL_FIND_REQUESTED));
+	ADD_SIGNAL(MethodInfo(SIGNAL_REPLACE_REQUESTED));
+}
+
+//-----------------------------------------------------------------------------
+const char *FindInFilesPanel::SIGNAL_RESULT_SELECTED = "result_selected";
+const char *FindInFilesPanel::SIGNAL_FILES_MODIFIED = "files_modified";
+
+FindInFilesPanel::FindInFilesPanel() {
+
+	_finder = memnew(FindInFiles);
+	_finder->connect(FindInFiles::SIGNAL_RESULT_FOUND, this, "_on_result_found");
+	_finder->connect(FindInFiles::SIGNAL_FINISHED, this, "_on_finished");
+	add_child(_finder);
+
+	VBoxContainer *vbc = memnew(VBoxContainer);
+	vbc->set_anchor_and_margin(MARGIN_LEFT, ANCHOR_BEGIN, 0);
+	vbc->set_anchor_and_margin(MARGIN_TOP, ANCHOR_BEGIN, 0);
+	vbc->set_anchor_and_margin(MARGIN_RIGHT, ANCHOR_END, 0);
+	vbc->set_anchor_and_margin(MARGIN_BOTTOM, ANCHOR_END, 0);
+	add_child(vbc);
+
+	{
+		HBoxContainer *hbc = memnew(HBoxContainer);
+
+		Label *find_label = memnew(Label);
+		find_label->set_text(TTR("Find: "));
+		hbc->add_child(find_label);
+
+		_search_text_label = memnew(Label);
+		_search_text_label->add_font_override("font", get_font("source", "EditorFonts"));
+		hbc->add_child(_search_text_label);
+
+		_progress_bar = memnew(ProgressBar);
+		_progress_bar->set_h_size_flags(SIZE_EXPAND_FILL);
+		hbc->add_child(_progress_bar);
+		set_progress_visible(false);
+
+		_status_label = memnew(Label);
+		hbc->add_child(_status_label);
+
+		_cancel_button = memnew(Button);
+		_cancel_button->set_text(TTR("Cancel"));
+		_cancel_button->connect("pressed", this, "_on_cancel_button_clicked");
+		_cancel_button->set_disabled(true);
+		hbc->add_child(_cancel_button);
+
+		vbc->add_child(hbc);
+	}
+
+	// In the future, this should be replaced by a more specific list container,
+	// which can highlight text regions and change opacity for enabled/disabled states
+	_results_display = memnew(ItemList);
+	_results_display->add_font_override("font", get_font("source", "EditorFonts"));
+	_results_display->set_v_size_flags(SIZE_EXPAND_FILL);
+	_results_display->connect("item_selected", this, "_on_result_selected");
+	vbc->add_child(_results_display);
+
+	{
+		_replace_container = memnew(HBoxContainer);
+
+		Label *replace_label = memnew(Label);
+		replace_label->set_text(TTR("Replace: "));
+		_replace_container->add_child(replace_label);
+
+		_replace_line_edit = memnew(LineEdit);
+		_replace_line_edit->set_h_size_flags(SIZE_EXPAND_FILL);
+		_replace_line_edit->connect("text_changed", this, "_on_replace_text_changed");
+		_replace_container->add_child(_replace_line_edit);
+
+		_replace_all_button = memnew(Button);
+		_replace_all_button->set_text(TTR("Replace all (no undo)"));
+		_replace_all_button->connect("pressed", this, "_on_replace_all_clicked");
+		_replace_container->add_child(_replace_all_button);
+
+		_replace_container->hide();
+
+		vbc->add_child(_replace_container);
+	}
+}
+
+void FindInFilesPanel::set_with_replace(bool with_replace) {
+
+	_replace_container->set_visible(with_replace);
+}
+
+void FindInFilesPanel::start_search() {
+
+	_results_display->clear();
+	_status_label->set_text(TTR("Searching..."));
+	_search_text_label->set_text(_finder->get_search_text());
+
+	set_process(true);
+	set_progress_visible(true);
+
+	_finder->start();
+
+	update_replace_buttons();
+	_cancel_button->set_disabled(false);
+}
+
+void FindInFilesPanel::stop_search() {
+
+	_finder->stop();
+
+	_status_label->set_text("");
+	update_replace_buttons();
+	set_progress_visible(false);
+	_cancel_button->set_disabled(true);
+}
+
+void FindInFilesPanel::_notification(int p_what) {
+	if (p_what == NOTIFICATION_PROCESS) {
+		_progress_bar->set_as_ratio(_finder->get_progress());
+	}
+}
+
+void FindInFilesPanel::_on_result_found(String fpath, int line_number, int begin, int end, String text) {
+
+	int i = _results_display->get_item_count();
+	_results_display->add_item(fpath + ": " + String::num(line_number) + ":        " + text.replace("\t", "    "));
+	_results_display->set_item_metadata(i, varray(fpath, line_number, begin, end));
+}
+
+void FindInFilesPanel::_on_finished() {
+
+	_status_label->set_text(TTR("Search complete"));
+	update_replace_buttons();
+	set_progress_visible(false);
+	_cancel_button->set_disabled(true);
+}
+
+void FindInFilesPanel::_on_cancel_button_clicked() {
+	stop_search();
+}
+
+void FindInFilesPanel::_on_result_selected(int i) {
+
+	Array meta = _results_display->get_item_metadata(i);
+	emit_signal(SIGNAL_RESULT_SELECTED, meta[0], meta[1], meta[2], meta[3]);
+}
+
+void FindInFilesPanel::_on_replace_text_changed(String text) {
+	update_replace_buttons();
+}
+
+void FindInFilesPanel::_on_replace_all_clicked() {
+
+	String replace_text = get_replace_text();
+	ERR_FAIL_COND(replace_text.empty());
+
+	String last_fpath;
+	PoolIntArray locations;
+	PoolStringArray modified_files;
+
+	for (int i = 0; i < _results_display->get_item_count(); ++i) {
+
+		Array meta = _results_display->get_item_metadata(i);
+
+		String fpath = meta[0];
+
+		// Results are sorted by file, so we can batch replaces
+		if (fpath != last_fpath) {
+			if (locations.size() != 0) {
+				apply_replaces_in_file(last_fpath, locations, replace_text);
+				modified_files.append(last_fpath);
+				locations.resize(0);
+			}
+		}
+
+		locations.append(meta[1]); // line_number
+		locations.append(meta[2]); // begin
+		locations.append(meta[3]); // end
+
+		last_fpath = fpath;
+	}
+
+	if (locations.size() != 0) {
+		apply_replaces_in_file(last_fpath, locations, replace_text);
+		modified_files.append(last_fpath);
+	}
+
+	// Hide replace bar so we can't trigger the action twice without doing a new search
+	set_with_replace(false);
+
+	emit_signal(SIGNAL_FILES_MODIFIED, modified_files);
+}
+
+// Same as get_line, but preserves line ending characters
+class ConservativeGetLine {
+public:
+	String get_line(FileAccess *f) {
+
+		_line_buffer.clear();
+
+		CharType c = f->get_8();
+
+		while (!f->eof_reached()) {
+
+			if (c == '\n') {
+				_line_buffer.push_back(c);
+				_line_buffer.push_back(0);
+				return String::utf8(_line_buffer.ptr());
+
+			} else if (c == '\0') {
+				_line_buffer.push_back(c);
+				return String::utf8(_line_buffer.ptr());
+
+			} else if (c != '\r') {
+				_line_buffer.push_back(c);
+			}
+
+			c = f->get_8();
+		}
+
+		_line_buffer.push_back(0);
+		return String::utf8(_line_buffer.ptr());
+	}
+
+private:
+	Vector<char> _line_buffer;
+};
+
+void FindInFilesPanel::apply_replaces_in_file(String fpath, PoolIntArray locations, String text) {
+
+	ERR_FAIL_COND(locations.size() % 3 != 0);
+
+	//print_line(String("Replacing {0} occurrences in {1}").format(varray(fpath, locations.size() / 3)));
+
+	// If the file is already open, I assume the editor will reload it.
+	// If there are unsaved changes, the user will be asked on focus,
+	// however that means either loosing changes or loosing replaces.
+
+	FileAccess *f = FileAccess::open(fpath, FileAccess::READ);
+	ERR_FAIL_COND(f == NULL);
+
+	String buffer;
+	int current_line = 1;
+
+	ConservativeGetLine conservative;
+
+	String line = conservative.get_line(f);
+
+	PoolIntArray::Read locations_read = locations.read();
+	for (int i = 0; i < locations.size(); i += 3) {
+
+		int repl_line_number = locations_read[i];
+		int repl_begin = locations_read[i + 1];
+		int repl_end = locations_read[i + 2];
+
+		while (current_line < repl_line_number) {
+			buffer += line;
+			line = conservative.get_line(f);
+			++current_line;
+		}
+
+		line = line.left(repl_begin) + text + line.right(repl_end);
+	}
+
+	buffer += line;
+
+	while (!f->eof_reached()) {
+		buffer += conservative.get_line(f);
+	}
+
+	// Now the modified contents are in the buffer, rewrite the file with our changes
+
+	Error err = f->reopen(fpath, FileAccess::WRITE);
+	ERR_FAIL_COND(err != OK);
+
+	f->store_string(buffer);
+
+	f->close();
+}
+
+String FindInFilesPanel::get_replace_text() {
+	return _replace_line_edit->get_text().strip_edges();
+}
+
+void FindInFilesPanel::update_replace_buttons() {
+
+	String text = get_replace_text();
+	bool disabled = text.empty() || _finder->is_searching();
+
+	_replace_all_button->set_disabled(disabled);
+}
+
+void FindInFilesPanel::set_progress_visible(bool visible) {
+	_progress_bar->set_self_modulate(Color(1, 1, 1, visible ? 1 : 0));
+}
+
+void FindInFilesPanel::_bind_methods() {
+
+	ClassDB::bind_method("_on_result_found", &FindInFilesPanel::_on_result_found);
+	ClassDB::bind_method("_on_finished", &FindInFilesPanel::_on_finished);
+	ClassDB::bind_method("_on_cancel_button_clicked", &FindInFilesPanel::_on_cancel_button_clicked);
+	ClassDB::bind_method("_on_result_selected", &FindInFilesPanel::_on_result_selected);
+	ClassDB::bind_method("_on_replace_text_changed", &FindInFilesPanel::_on_replace_text_changed);
+	ClassDB::bind_method("_on_replace_all_clicked", &FindInFilesPanel::_on_replace_all_clicked);
+
+	ADD_SIGNAL(MethodInfo(SIGNAL_RESULT_SELECTED,
+			PropertyInfo(Variant::STRING, "path"),
+			PropertyInfo(Variant::INT, "line_number"),
+			PropertyInfo(Variant::INT, "begin"),
+			PropertyInfo(Variant::INT, "end")));
+
+	ADD_SIGNAL(MethodInfo(SIGNAL_FILES_MODIFIED, PropertyInfo(Variant::STRING, "paths")));
+}

editor/find_in_files.h

@@ -0,0 +1,184 @@
+/*************************************************************************/
+/*  find_in_files.h                                                      */
+/*************************************************************************/
+/*                       This file is part of:                           */
+/*                           GODOT ENGINE                                */
+/*                      https://godotengine.org                          */
+/*************************************************************************/
+/* Copyright (c) 2007-2018 Juan Linietsky, Ariel Manzur.                 */
+/* Copyright (c) 2014-2018 Godot Engine contributors (cf. AUTHORS.md)    */
+/*                                                                       */
+/* Permission is hereby granted, free of charge, to any person obtaining */
+/* a copy of this software and associated documentation files (the       */
+/* "Software"), to deal in the Software without restriction, including   */
+/* without limitation the rights to use, copy, modify, merge, publish,   */
+/* distribute, sublicense, and/or sell copies of the Software, and to    */
+/* permit persons to whom the Software is furnished to do so, subject to */
+/* the following conditions:                                             */
+/*                                                                       */
+/* The above copyright notice and this permission notice shall be        */
+/* included in all copies or substantial portions of the Software.       */
+/*                                                                       */
+/* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,       */
+/* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF    */
+/* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.*/
+/* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY  */
+/* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,  */
+/* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE     */
+/* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.                */
+/*************************************************************************/
+
+#ifndef FIND_IN_FILES_H
+#define FIND_IN_FILES_H
+
+#include "scene/gui/dialogs.h"
+
+// Performs the actual search
+class FindInFiles : public Node {
+	GDCLASS(FindInFiles, Node)
+public:
+	static const char *SIGNAL_RESULT_FOUND;
+	static const char *SIGNAL_FINISHED;
+
+	FindInFiles();
+
+	void set_search_text(String p_pattern);
+	void set_whole_words(bool p_whole_word);
+	void set_match_case(bool p_match_case);
+	void set_folder(String folder);
+	void set_filter(const Set<String> &exts);
+
+	String get_search_text() const { return _pattern; }
+
+	bool is_whole_words() const { return _whole_words; }
+	bool is_match_case() const { return _match_case; }
+
+	void start();
+	void stop();
+
+	bool is_searching() const { return _searching; }
+	float get_progress() const;
+
+protected:
+	void _notification(int p_notification);
+
+	static void _bind_methods();
+
+private:
+	void _process();
+	void _iterate();
+	void _scan_dir(String path, PoolStringArray &out_folders);
+	void _scan_file(String fpath);
+
+	// Config
+	String _pattern;
+	Set<String> _extension_filter;
+	String _root_prefix;
+	String _root_dir;
+	bool _whole_words;
+	bool _match_case;
+
+	// State
+	bool _searching;
+	String _current_dir;
+	Vector<PoolStringArray> _folders_stack;
+	Vector<String> _files_to_scan;
+	int _initial_files_count;
+};
+
+class LineEdit;
+class CheckBox;
+class FileDialog;
+
+// Prompts search parameters
+class FindInFilesDialog : public WindowDialog {
+	GDCLASS(FindInFilesDialog, WindowDialog)
+public:
+	static const char *SIGNAL_FIND_REQUESTED;
+	static const char *SIGNAL_REPLACE_REQUESTED;
+
+	FindInFilesDialog();
+
+	void set_search_text(String text);
+
+	String get_search_text() const;
+	bool is_match_case() const;
+	bool is_whole_words() const;
+	String get_folder() const;
+	Set<String> get_filter() const;
+
+protected:
+	static void _bind_methods();
+
+	void _notification(int p_what);
+
+private:
+	void _on_folder_button_pressed();
+	void _on_find_button_pressed();
+	void _on_replace_button_pressed();
+	void _on_folder_selected(String path);
+	void _on_search_text_modified(String text);
+	void _on_search_text_entered(String text);
+
+	LineEdit *_search_text_line_edit;
+	LineEdit *_folder_line_edit;
+	Vector<CheckBox *> _filters;
+	CheckBox *_match_case_checkbox;
+	CheckBox *_whole_words_checkbox;
+	Button *_find_button;
+	Button *_replace_button;
+	FileDialog *_folder_dialog;
+};
+
+class Button;
+class ItemList;
+class ProgressBar;
+
+// Display search results
+class FindInFilesPanel : public Control {
+	GDCLASS(FindInFilesPanel, Control)
+public:
+	static const char *SIGNAL_RESULT_SELECTED;
+	static const char *SIGNAL_FILES_MODIFIED;
+
+	FindInFilesPanel();
+
+	FindInFiles *get_finder() const { return _finder; }
+
+	void set_with_replace(bool with_replace);
+
+	void start_search();
+	void stop_search();
+
+protected:
+	static void _bind_methods();
+
+	void _notification(int p_what);
+
+private:
+	void _on_result_found(String fpath, int line_number, int begin, int end, String text);
+	void _on_finished();
+	void _on_cancel_button_clicked();
+	void _on_result_selected(int i);
+	void _on_replace_text_changed(String text);
+	void _on_replace_all_clicked();
+
+	void apply_replaces_in_file(String fpath, PoolIntArray locations, String text);
+
+	void update_replace_buttons();
+	String get_replace_text();
+	void set_progress_visible(bool visible);
+
+	FindInFiles *_finder;
+	Label *_search_text_label;
+	ItemList *_results_display;
+	Label *_status_label;
+	Button *_cancel_button;
+	ProgressBar *_progress_bar;
+
+	HBoxContainer *_replace_container;
+	LineEdit *_replace_line_edit;
+	Button *_replace_all_button;
+};
+
+#endif // FIND_IN_FILES_H

editor/plugins/script_editor_plugin.cpp

@@ -39,9 +39,11 @@
 #include "core/project_settings.h"
 #include "editor/editor_node.h"
 #include "editor/editor_settings.h"
+#include "editor/find_in_files.h"
 #include "editor/node_dock.h"
 #include "editor/script_editor_debugger.h"
 #include "scene/main/viewport.h"
+#include "script_text_editor.h"
 
 /*** SCRIPT EDITOR ****/
 
@@ -54,6 +56,8 @@ void ScriptEditorBase::_bind_methods() {
 	ADD_SIGNAL(MethodInfo("request_open_script_at_line", PropertyInfo(Variant::OBJECT, "script"), PropertyInfo(Variant::INT, "line")));
 	ADD_SIGNAL(MethodInfo("request_save_history"));
 	ADD_SIGNAL(MethodInfo("go_to_help", PropertyInfo(Variant::STRING, "what")));
+	// TODO This signal is no use for VisualScript...
+	ADD_SIGNAL(MethodInfo("search_in_files_requested", PropertyInfo(Variant::STRING, "text")));
 }
 
 static bool _can_open_in_editor(Script *p_script) {
@@ -300,15 +304,9 @@ void ScriptEditor::_script_created(Ref<Script> p_script) {
 
 void ScriptEditor::_goto_script_line2(int p_line) {
 
-	int selected = tab_container->get_current_tab();
-	if (selected < 0 || selected >= tab_container->get_child_count())
-		return;
-
-	ScriptEditorBase *current = Object::cast_to<ScriptEditorBase>(tab_container->get_child(selected));
-	if (!current)
-		return;
-
-	current->goto_line(p_line);
+	ScriptEditorBase *current = _get_current_editor();
+	if (current)
+		current->goto_line(p_line);
 }
 
 void ScriptEditor::_goto_script_line(REF p_script, int p_line) {
@@ -318,19 +316,22 @@ void ScriptEditor::_goto_script_line(REF p_script, int p_line) {
 		if (edit(p_script, p_line, 0)) {
 			editor->push_item(p_script.ptr());
 
-			int selected = tab_container->get_current_tab();
-			if (selected < 0 || selected >= tab_container->get_child_count())
-				return;
-
-			ScriptEditorBase *current = Object::cast_to<ScriptEditorBase>(tab_container->get_child(selected));
-			if (!current)
-				return;
-
-			current->goto_line(p_line, true);
+			ScriptEditorBase *current = _get_current_editor();
+			if (current)
+				current->goto_line(p_line, true);
 		}
 	}
 }
 
+ScriptEditorBase *ScriptEditor::_get_current_editor() const {
+
+	int selected = tab_container->get_current_tab();
+	if (selected < 0 || selected >= tab_container->get_child_count())
+		return NULL;
+
+	return Object::cast_to<ScriptEditorBase>(tab_container->get_child(selected));
+}
+
 void ScriptEditor::_update_history_arrows() {
 
 	script_back->set_disabled(history_pos <= 0);
@@ -583,7 +584,7 @@ void ScriptEditor::_close_docs_tab() {
 }
 
 void ScriptEditor::_copy_script_path() {
-	ScriptEditorBase *se = Object::cast_to<ScriptEditorBase>(tab_container->get_child(tab_container->get_current_tab()));
+	ScriptEditorBase *se = _get_current_editor();
 	Ref<Script> script = se->get_edited_script();
 	OS::get_singleton()->set_clipboard(script->get_path());
 }
@@ -815,11 +816,8 @@ void ScriptEditor::_file_dialog_action(String p_file) {
 
 Ref<Script> ScriptEditor::_get_current_script() {
 
-	int selected = tab_container->get_current_tab();
-	if (selected < 0 || selected >= tab_container->get_child_count())
-		return NULL;
+	ScriptEditorBase *current = _get_current_editor();
 
-	ScriptEditorBase *current = Object::cast_to<ScriptEditorBase>(tab_container->get_child(selected));
 	if (current) {
 		return current->get_edited_script();
 	} else {
@@ -935,11 +933,7 @@ void ScriptEditor::_menu_option(int p_option) {
 		}
 	}
 
-	int selected = tab_container->get_current_tab();
-	if (selected < 0 || selected >= tab_container->get_child_count())
-		return;
-
-	ScriptEditorBase *current = Object::cast_to<ScriptEditorBase>(tab_container->get_child(selected));
+	ScriptEditorBase *current = _get_current_editor();
 	if (current) {
 
 		switch (p_option) {
@@ -1029,7 +1023,7 @@ void ScriptEditor::_menu_option(int p_option) {
 				_copy_script_path();
 			} break;
 			case SHOW_IN_FILE_SYSTEM: {
-				ScriptEditorBase *se = Object::cast_to<ScriptEditorBase>(tab_container->get_child(tab_container->get_current_tab()));
+				ScriptEditorBase *se = _get_current_editor();
 				Ref<Script> script = se->get_edited_script();
 				FileSystemDock *file_system_dock = EditorNode::get_singleton()->get_filesystem_dock();
 				file_system_dock->navigate_to_path(script->get_path());
@@ -1219,6 +1213,17 @@ void ScriptEditor::_notification(int p_what) {
 			recent_scripts->set_as_minsize();
 		} break;
 
+		case CanvasItem::NOTIFICATION_VISIBILITY_CHANGED: {
+
+			if (is_visible()) {
+				find_in_files_button->show();
+			} else {
+				find_in_files->hide();
+				find_in_files_button->hide();
+			}
+
+		} break;
+
 		default:
 			break;
 	}
@@ -1226,15 +1231,11 @@ void ScriptEditor::_notification(int p_what) {
 
 bool ScriptEditor::can_take_away_focus() const {
 
-	int selected = tab_container->get_current_tab();
-	if (selected < 0 || selected >= tab_container->get_child_count())
+	ScriptEditorBase *current = _get_current_editor();
+	if (current)
+		return current->can_lose_focus_on_node_selection();
+	else
 		return true;
-
-	ScriptEditorBase *current = Object::cast_to<ScriptEditorBase>(tab_container->get_child(selected));
-	if (!current)
-		return true;
-
-	return current->can_lose_focus_on_node_selection();
 }
 
 void ScriptEditor::close_builtin_scripts_from_scene(const String &p_scene) {
@@ -1311,20 +1312,13 @@ void ScriptEditor::ensure_focus_current() {
 	if (!is_inside_tree())
 		return;
 
-	int cidx = tab_container->get_current_tab();
-	if (cidx < 0 || cidx >= tab_container->get_tab_count())
-		return;
-
-	Control *c = Object::cast_to<Control>(tab_container->get_child(cidx));
-	ScriptEditorBase *se = Object::cast_to<ScriptEditorBase>(c);
-	if (!se)
-		return;
-	se->ensure_focus();
+	ScriptEditorBase *current = _get_current_editor();
+	if (current)
+		current->ensure_focus();
 }
 
 void ScriptEditor::_members_overview_selected(int p_idx) {
-	Node *current = tab_container->get_child(tab_container->get_current_tab());
-	ScriptEditorBase *se = Object::cast_to<ScriptEditorBase>(current);
+	ScriptEditorBase *se = _get_current_editor();
 	if (!se) {
 		return;
 	}
@@ -1357,18 +1351,12 @@ void ScriptEditor::ensure_select_current() {
 
 	if (tab_container->get_child_count() && tab_container->get_current_tab() >= 0) {
 
-		Node *current = tab_container->get_child(tab_container->get_current_tab());
-
-		ScriptEditorBase *se = Object::cast_to<ScriptEditorBase>(current);
+		ScriptEditorBase *se = _get_current_editor();
 		if (se) {
 
-			Ref<Script> script = se->get_edited_script();
-
 			if (!grab_focus_block && is_visible_in_tree())
 				se->ensure_focus();
 		}
-
-		EditorHelp *eh = Object::cast_to<EditorHelp>(current);
 	}
 
 	_update_selected_editor_menu();
@@ -1408,12 +1396,7 @@ struct _ScriptEditorItemData {
 
 void ScriptEditor::_update_members_overview_visibility() {
 
-	int selected = tab_container->get_current_tab();
-	if (selected < 0 || selected >= tab_container->get_child_count())
-		return;
-
-	Node *current = tab_container->get_child(tab_container->get_current_tab());
-	ScriptEditorBase *se = Object::cast_to<ScriptEditorBase>(current);
+	ScriptEditorBase *se = _get_current_editor();
 	if (!se) {
 		members_overview->set_visible(false);
 		return;
@@ -1429,12 +1412,7 @@ void ScriptEditor::_update_members_overview_visibility() {
 void ScriptEditor::_update_members_overview() {
 	members_overview->clear();
 
-	int selected = tab_container->get_current_tab();
-	if (selected < 0 || selected >= tab_container->get_child_count())
-		return;
-
-	Node *current = tab_container->get_child(tab_container->get_current_tab());
-	ScriptEditorBase *se = Object::cast_to<ScriptEditorBase>(current);
+	ScriptEditorBase *se = _get_current_editor();
 	if (!se) {
 		return;
 	}
@@ -1777,6 +1755,7 @@ bool ScriptEditor::edit(const Ref<Script> &p_script, int p_line, int p_col, bool
 	se->connect("request_open_script_at_line", this, "_goto_script_line");
 	se->connect("go_to_help", this, "_help_class_goto");
 	se->connect("request_save_history", this, "_save_history");
+	se->connect("search_in_files_requested", this, "_on_find_in_files_requested");
 
 	//test for modification, maybe the script was not edited but was loaded
 
@@ -2483,6 +2462,48 @@ void ScriptEditor::_script_changed() {
 	NodeDock::singleton->update_lists();
 }
 
+void ScriptEditor::_on_find_in_files_requested(String text) {
+
+	find_in_files_dialog->set_search_text(text);
+	find_in_files_dialog->popup_centered_minsize();
+}
+
+void ScriptEditor::_on_find_in_files_result_selected(String fpath, int line_number, int begin, int end) {
+
+	Ref<Resource> res = ResourceLoader::load(fpath);
+	edit(res);
+
+	ScriptEditorBase *seb = _get_current_editor();
+
+	ScriptTextEditor *ste = Object::cast_to<ScriptTextEditor>(seb);
+	if (ste) {
+		ste->goto_line_selection(line_number - 1, begin, end);
+	}
+}
+
+void ScriptEditor::_start_find_in_files(bool with_replace) {
+
+	FindInFiles *f = find_in_files->get_finder();
+
+	f->set_search_text(find_in_files_dialog->get_search_text());
+	f->set_match_case(find_in_files_dialog->is_match_case());
+	f->set_whole_words(find_in_files_dialog->is_match_case());
+	f->set_folder(find_in_files_dialog->get_folder());
+	f->set_filter(find_in_files_dialog->get_filter());
+
+	find_in_files->set_with_replace(with_replace);
+	find_in_files->start_search();
+
+	find_in_files_button->set_pressed(true);
+	find_in_files->show();
+}
+
+void ScriptEditor::_on_find_in_files_modified_files(PoolStringArray paths) {
+
+	_test_script_times_on_disk();
+	_update_modified_scripts_for_external_editor();
+}
+
 void ScriptEditor::_bind_methods() {
 
 	ClassDB::bind_method("_file_dialog_action", &ScriptEditor::_file_dialog_action);
@@ -2530,6 +2551,10 @@ void ScriptEditor::_bind_methods() {
 	ClassDB::bind_method("_script_list_gui_input", &ScriptEditor::_script_list_gui_input);
 	ClassDB::bind_method("_script_changed", &ScriptEditor::_script_changed);
 	ClassDB::bind_method("_update_recent_scripts", &ScriptEditor::_update_recent_scripts);
+	ClassDB::bind_method("_on_find_in_files_requested", &ScriptEditor::_on_find_in_files_requested);
+	ClassDB::bind_method("_start_find_in_files", &ScriptEditor::_start_find_in_files);
+	ClassDB::bind_method("_on_find_in_files_result_selected", &ScriptEditor::_on_find_in_files_result_selected);
+	ClassDB::bind_method("_on_find_in_files_modified_files", &ScriptEditor::_on_find_in_files_modified_files);
 
 	ClassDB::bind_method(D_METHOD("get_drag_data_fw", "point", "from"), &ScriptEditor::get_drag_data_fw);
 	ClassDB::bind_method(D_METHOD("can_drop_data_fw", "point", "data", "from"), &ScriptEditor::can_drop_data_fw);
@@ -2785,6 +2810,19 @@ ScriptEditor::ScriptEditor(EditorNode *p_editor) {
 	add_child(help_index);
 	help_index->connect("open_class", this, "_help_class_open");
 
+	find_in_files_dialog = memnew(FindInFilesDialog);
+	find_in_files_dialog->connect(FindInFilesDialog::SIGNAL_FIND_REQUESTED, this, "_start_find_in_files", varray(false));
+	find_in_files_dialog->connect(FindInFilesDialog::SIGNAL_REPLACE_REQUESTED, this, "_start_find_in_files", varray(true));
+	add_child(find_in_files_dialog);
+	find_in_files = memnew(FindInFilesPanel);
+	find_in_files_button = editor->add_bottom_panel_item(TTR("Search results"), find_in_files);
+	find_in_files_button->set_tooltip(TTR("Search in files"));
+	find_in_files->set_custom_minimum_size(Size2(0, 200));
+	find_in_files->connect(FindInFilesPanel::SIGNAL_RESULT_SELECTED, this, "_on_find_in_files_result_selected");
+	find_in_files->connect(FindInFilesPanel::SIGNAL_FILES_MODIFIED, this, "_on_find_in_files_modified_files");
+	find_in_files->hide();
+	find_in_files_button->hide();
+
 	history_pos = -1;
 	//debugger_gui->hide();
 

editor/plugins/script_editor_plugin.h

@@ -115,6 +115,8 @@ public:
 typedef ScriptEditorBase *(*CreateScriptEditorFunc)(const Ref<Script> &p_script);
 
 class EditorScriptCodeCompletionCache;
+class FindInFilesDialog;
+class FindInFilesPanel;
 
 class ScriptEditor : public PanelContainer {
 
@@ -211,6 +213,10 @@ class ScriptEditor : public PanelContainer {
 	ToolButton *script_back;
 	ToolButton *script_forward;
 
+	FindInFilesDialog *find_in_files_dialog;
+	FindInFilesPanel *find_in_files;
+	Button *find_in_files_button;
+
 	enum {
 		SCRIPT_EDITOR_FUNC_MAX = 32
 	};
@@ -294,6 +300,8 @@ class ScriptEditor : public PanelContainer {
 	void _update_window_menu();
 	void _script_created(Ref<Script> p_script);
 
+	ScriptEditorBase *_get_current_editor() const;
+
 	void _save_layout();
 	void _editor_settings_changed();
 	void _autosave_scripts();
@@ -349,6 +357,11 @@ class ScriptEditor : public PanelContainer {
 	Ref<Script> _get_current_script();
 	Array _get_open_scripts() const;
 
+	void _on_find_in_files_requested(String text);
+	void _on_find_in_files_result_selected(String fpath, int line_number, int begin, int end);
+	void _start_find_in_files(bool with_replace);
+	void _on_find_in_files_modified_files(PoolStringArray paths);
+
 	static void _open_script_request(const String &p_path);
 
 	static ScriptEditor *script_editor;

editor/plugins/script_text_editor.cpp

@@ -523,6 +523,14 @@ void ScriptTextEditor::goto_line(int p_line, bool p_with_error) {
 	tx->call_deferred("cursor_set_line", p_line);
 }
 
+void ScriptTextEditor::goto_line_selection(int p_line, int p_begin, int p_end) {
+	TextEdit *tx = code_editor->get_text_edit();
+	tx->unfold_line(p_line);
+	tx->call_deferred("cursor_set_line", p_line);
+	tx->call_deferred("cursor_set_column", p_begin);
+	tx->select(p_line, p_begin, p_line, p_end);
+}
+
 void ScriptTextEditor::ensure_focus() {
 
 	code_editor->get_text_edit()->grab_focus();
@@ -1134,6 +1142,15 @@ void ScriptTextEditor::_edit_option(int p_op) {
 
 			code_editor->get_find_replace_bar()->popup_replace();
 		} break;
+		case SEARCH_IN_FILES: {
+
+			String selected_text = code_editor->get_text_edit()->get_selection_text();
+
+			// Yep, because it doesn't make sense to instance this dialog for every single script open...
+			// So this will be delegated to the ScriptEditor
+			emit_signal("search_in_files_requested", selected_text);
+
+		} break;
 		case SEARCH_LOCATE_FUNCTION: {
 
 			quick_open->popup(get_functions());
@@ -1599,6 +1616,8 @@ ScriptTextEditor::ScriptTextEditor() {
 	search_menu->get_popup()->add_shortcut(ED_GET_SHORTCUT("script_text_editor/find_previous"), SEARCH_FIND_PREV);
 	search_menu->get_popup()->add_shortcut(ED_GET_SHORTCUT("script_text_editor/replace"), SEARCH_REPLACE);
 	search_menu->get_popup()->add_separator();
+	search_menu->get_popup()->add_shortcut(ED_GET_SHORTCUT("script_text_editor/find_in_files"), SEARCH_IN_FILES);
+	search_menu->get_popup()->add_separator();
 	search_menu->get_popup()->add_shortcut(ED_GET_SHORTCUT("script_text_editor/goto_function"), SEARCH_LOCATE_FUNCTION);
 	search_menu->get_popup()->add_shortcut(ED_GET_SHORTCUT("script_text_editor/goto_line"), SEARCH_GOTO_LINE);
 	search_menu->get_popup()->add_separator();
@@ -1670,7 +1689,9 @@ void ScriptTextEditor::register_editor() {
 	ED_SHORTCUT("script_text_editor/find_previous", TTR("Find Previous"), KEY_MASK_SHIFT | KEY_F3);
 	ED_SHORTCUT("script_text_editor/replace", TTR("Replace.."), KEY_MASK_CMD | KEY_R);
 
-	ED_SHORTCUT("script_text_editor/goto_function", TTR("Goto Function.."), KEY_MASK_SHIFT | KEY_MASK_CMD | KEY_F);
+	ED_SHORTCUT("script_text_editor/find_in_files", TTR("Find in files..."), KEY_MASK_CMD | KEY_MASK_SHIFT | KEY_F);
+
+	ED_SHORTCUT("script_text_editor/goto_function", TTR("Goto Function.."), KEY_MASK_ALT | KEY_MASK_CMD | KEY_F);
 	ED_SHORTCUT("script_text_editor/goto_line", TTR("Goto Line.."), KEY_MASK_CMD | KEY_L);
 
 	ED_SHORTCUT("script_text_editor/contextual_help", TTR("Contextual Help"), KEY_MASK_SHIFT | KEY_F1);

editor/plugins/script_text_editor.h

@@ -105,6 +105,7 @@ class ScriptTextEditor : public ScriptEditorBase {
 		SEARCH_REPLACE,
 		SEARCH_LOCATE_FUNCTION,
 		SEARCH_GOTO_LINE,
+		SEARCH_IN_FILES,
 		DEBUG_TOGGLE_BREAKPOINT,
 		DEBUG_REMOVE_ALL_BREAKPOINTS,
 		DEBUG_GOTO_NEXT_BREAKPOINT,
@@ -163,6 +164,7 @@ public:
 	virtual void tag_saved_version();
 
 	virtual void goto_line(int p_line, bool p_with_error = false);
+	void goto_line_selection(int p_line, int p_begin, int p_end);
 
 	virtual void reload(bool p_soft);
 	virtual void get_breakpoints(List<int> *p_breakpoints);