text: /*************************************************************************/
  /*  filesystem_dock.cpp                                                  */
  /*************************************************************************/
  /*                       This file is part of:                           */
  /*                           GODOT ENGINE                                */
  /*                      https://godotengine.org                          */
  /*************************************************************************/
  /* Copyright (c) 2007-2019 Juan Linietsky, Ariel Manzur.                 */
  /* Copyright (c) 2014-2019 Godot Engine contributors (cf. AUTHORS.md)    */
  /*                                                                       */
  /* Permission is hereby granted, free of charge, to any person obtaining */
  /* a copy of this software and associated documentation files (the       */
  /* "Software"), to deal in the Software without restriction, including   */
  /* without limitation the rights to use, copy, modify, merge, publish,   */
  /* distribute, sublicense, and/or sell copies of the Software, and to    */
  /* permit persons to whom the Software is furnished to do so, subject to */
  /* the following conditions:                                             */
  /*                                                                       */
  /* The above copyright notice and this permission notice shall be        */
  /* included in all copies or substantial portions of the Software.       */
  /*                                                                       */
  /* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,       */
  /* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF    */
  /* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.*/
  /* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY  */
  /* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,  */
  /* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE     */
  /* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.                */
  /*************************************************************************/
  
  #include "filesystem_dock.h"
  
  #include "core/io/resource_loader.h"
  #include "core/os/dir_access.h"
  #include "core/os/file_access.h"
  #include "core/os/keyboard.h"
  #include "core/os/os.h"
  #include "core/project_settings.h"
  #include "editor_node.h"
  #include "editor_settings.h"
  #include "scene/main/viewport.h"
  #include "scene/resources/packed_scene.h"
  
  Ref<Texture> FileSystemDock::_get_tree_item_icon(EditorFileSystemDirectory *p_dir, int p_idx) {
  	Ref<Texture> file_icon;
  	if (!p_dir->get_file_import_is_valid(p_idx)) {
  		file_icon = get_icon("ImportFail", "EditorIcons");
  	} else {
  		String file_type = p_dir->get_file_type(p_idx);
  		file_icon = (has_icon(file_type, "EditorIcons")) ? get_icon(file_type, "EditorIcons") : get_icon("File", "EditorIcons");
  	}
  	return file_icon;
  }
  
  bool FileSystemDock::_create_tree(TreeItem *p_parent, EditorFileSystemDirectory *p_dir, Vector<String> &uncollapsed_paths, bool p_select_in_favorites) {
  	bool parent_should_expand = false;
  
  	// Create a tree item for the subdirectory.
  	TreeItem *subdirectory_item = tree->create_item(p_parent);
  	String dname = p_dir->get_name();
  	if (dname == "")
  		dname = "res://";
  
  	subdirectory_item->set_text(0, dname);
  	subdirectory_item->set_icon(0, get_icon("Folder", "EditorIcons"));
  	subdirectory_item->set_icon_modulate(0, get_color("folder_icon_modulate", "FileDialog"));
  	subdirectory_item->set_selectable(0, true);
  	String lpath = p_dir->get_path();
  	subdirectory_item->set_metadata(0, lpath);
  	if (!p_select_in_favorites && (path == lpath || ((display_mode == DISPLAY_MODE_SPLIT) && path.get_base_dir() == lpath))) {
  		subdirectory_item->select(0);
  	}
  
  	if ((path.begins_with(lpath) && path != lpath)) {
  		subdirectory_item->set_collapsed(false);
  	} else {
  		subdirectory_item->set_collapsed(uncollapsed_paths.find(lpath) < 0);
  	}
  	if (searched_string.length() > 0 && dname.to_lower().find(searched_string) >= 0) {
  		parent_should_expand = true;
  	}
  
  	// Create items for all subdirectories.
  	for (int i = 0; i < p_dir->get_subdir_count(); i++)
  		parent_should_expand = (_create_tree(subdirectory_item, p_dir->get_subdir(i), uncollapsed_paths, p_select_in_favorites) || parent_should_expand);
  
  	// Create all items for the files in the subdirectory.
  	if (display_mode == DISPLAY_MODE_TREE_ONLY) {
  		for (int i = 0; i < p_dir->get_file_count(); i++) {
  
  			String file_type = p_dir->get_file_type(i);
  
  			if (_is_file_type_disabled_by_feature_profile(file_type)) {
  				// If type is disabled, file won't be displayed.
  				continue;
  			}
  			String file_name = p_dir->get_file(i);
  
  			if (searched_string.length() > 0) {
  				if (file_name.to_lower().find(searched_string) < 0) {
  					// The searched string is not in the file name, we skip it.
  					continue;
  				} else {
  					// We expand all parents.
  					parent_should_expand = true;
  				}
  			}
  
  			TreeItem *file_item = tree->create_item(subdirectory_item);
  			file_item->set_text(0, file_name);
  			file_item->set_icon(0, _get_tree_item_icon(p_dir, i));
  			String file_metadata = lpath.plus_file(file_name);
  			file_item->set_metadata(0, file_metadata);
  			if (!p_select_in_favorites && path == file_metadata) {
  				file_item->select(0);
  				file_item->set_as_cursor(0);
  			}
  			Array udata;
  			udata.push_back(tree_update_id);
  			udata.push_back(file_item);
  			EditorResourcePreview::get_singleton()->queue_resource_preview(file_metadata, this, "_tree_thumbnail_done", udata);
  		}
  	}
  
  	if (searched_string.length() > 0) {
  		if (parent_should_expand) {
  			subdirectory_item->set_collapsed(false);
  		} else if (dname != "res://") {
  			subdirectory_item->get_parent()->remove_child(subdirectory_item);
  		}
  	}
  
  	return parent_should_expand;
  }
  
  Vector<String> FileSystemDock::_compute_uncollapsed_paths() {
  	// Register currently collapsed paths.
  	Vector<String> uncollapsed_paths;
  	TreeItem *root = tree->get_root();
  	if (root) {
  		TreeItem *favorites_item = root->get_children();
  		if (!favorites_item->is_collapsed()) {
  			uncollapsed_paths.push_back(favorites_item->get_metadata(0));
  		}
  
  		TreeItem *resTree = root->get_children()->get_next();
  		if (resTree) {
  			Vector<TreeItem *> needs_check;
  			needs_check.push_back(resTree);
  
  			while (needs_check.size()) {
  				if (!needs_check[0]->is_collapsed()) {
  					uncollapsed_paths.push_back(needs_check[0]->get_metadata(0));
  					TreeItem *child = needs_check[0]->get_children();
  					while (child) {
  						needs_check.push_back(child);
  						child = child->get_next();
  					}
  				}
  				needs_check.remove(0);
  			}
  		}
  	}
  	return uncollapsed_paths;
  }
  
  void FileSystemDock::_update_tree(const Vector<String> &p_uncollapsed_paths, bool p_uncollapse_root, bool p_select_in_favorites) {
  	// Recreate the tree.
  	tree->clear();
  	tree_update_id++;
  	updating_tree = true;
  	TreeItem *root = tree->create_item();
  
  	// Handles the favorites.
  	TreeItem *favorites = tree->create_item(root);
  	favorites->set_icon(0, get_icon("Favorites", "EditorIcons"));
  	favorites->set_text(0, TTR("Favorites:"));
  	favorites->set_metadata(0, "Favorites");
  	favorites->set_collapsed(p_uncollapsed_paths.find("Favorites") < 0);
  
  	Vector<String> favorite_paths = EditorSettings::get_singleton()->get_favorites();
  	for (int i = 0; i < favorite_paths.size(); i++) {
  		String fave = favorite_paths[i];
  		if (!fave.begins_with("res://"))
  			continue;
  
  		Ref<Texture> folder_icon = get_icon("Folder", "EditorIcons");
  		const Color folder_color = get_color("folder_icon_modulate", "FileDialog");
  
  		String text;
  		Ref<Texture> icon;
  		Color color;
  		if (fave == "res://") {
  			text = "/";
  			icon = folder_icon;
  			color = folder_color;
  		} else if (fave.ends_with("/")) {
  			text = fave.substr(0, fave.length() - 1).get_file();
  			icon = folder_icon;
  			color = folder_color;
  		} else {
  			text = fave.get_file();
  			int index;
  			EditorFileSystemDirectory *dir = EditorFileSystem::get_singleton()->find_file(fave, &index);
  			if (dir) {
  				icon = _get_tree_item_icon(dir, index);
  			} else {
  				icon = get_icon("File", "EditorIcons");
  			}
  			color = Color(1, 1, 1);
  		}
  
  		if (searched_string.length() == 0 || text.to_lower().find(searched_string) >= 0) {
  			TreeItem *ti = tree->create_item(favorites);
  			ti->set_text(0, text);
  			ti->set_icon(0, icon);
  			ti->set_icon_modulate(0, color);
  			ti->set_tooltip(0, fave);
  			ti->set_selectable(0, true);
  			ti->set_metadata(0, fave);
  			if (p_select_in_favorites && fave == path) {
  				ti->select(0);
  				ti->set_as_cursor(0);
  			}
  			if (!fave.ends_with("/")) {
  				Array udata;
  				udata.push_back(tree_update_id);
  				udata.push_back(ti);
  				EditorResourcePreview::get_singleton()->queue_resource_preview(fave, this, "_tree_thumbnail_done", udata);
  			}
  		}
  	}
  
  	Vector<String> uncollapsed_paths = p_uncollapsed_paths;
  	if (p_uncollapse_root) {
  		uncollapsed_paths.push_back("res://");
  	}
  
  	// Create the remaining of the tree.
  	_create_tree(root, EditorFileSystem::get_singleton()->get_filesystem(), uncollapsed_paths, p_select_in_favorites);
  	tree->ensure_cursor_is_visible();
  	updating_tree = false;
  }
  
  void FileSystemDock::set_display_mode(DisplayMode p_display_mode) {
  	display_mode = p_display_mode;
  	_update_display_mode(false);
  }
  
  void FileSystemDock::_update_display_mode(bool p_force) {
  	// Compute the new display mode.
  	if (p_force || old_display_mode != display_mode) {
  		button_toggle_display_mode->set_pressed(display_mode == DISPLAY_MODE_SPLIT);
  		switch (display_mode) {
  			case DISPLAY_MODE_TREE_ONLY:
  				tree->show();
  				tree->set_v_size_flags(SIZE_EXPAND_FILL);
  				if (display_mode == DISPLAY_MODE_TREE_ONLY) {
  					tree_search_box->show();
  				} else {
  					tree_search_box->hide();
  				}
  
  				_update_tree(_compute_uncollapsed_paths());
  				file_list_vb->hide();
  				break;
  
  			case DISPLAY_MODE_SPLIT:
  				tree->show();
  				tree->set_v_size_flags(SIZE_EXPAND_FILL);
  				tree->ensure_cursor_is_visible();
  				tree_search_box->hide();
  				_update_tree(_compute_uncollapsed_paths());
  
  				file_list_vb->show();
  				_update_file_list(true);
  				break;
  		}
  		old_display_mode = display_mode;
  	}
  }
  
  void FileSystemDock::_notification(int p_what) {
  	switch (p_what) {
  		case NOTIFICATION_ENTER_TREE: {
  			if (initialized)
  				return;
  			initialized = true;
  			EditorFeatureProfileManager::get_singleton()->connect("current_feature_profile_changed", this, "_feature_profile_changed");
  
  			EditorFileSystem::get_singleton()->connect("filesystem_changed", this, "_fs_changed");
  			EditorResourcePreview::get_singleton()->connect("preview_invalidated", this, "_preview_invalidated");
  
  			String ei = "EditorIcons";
  			button_reload->set_icon(get_icon("Reload", ei));
  			button_toggle_display_mode->set_icon(get_icon("Panels2", ei));
  			button_file_list_display_mode->connect("pressed", this, "_toggle_file_display");
  
  			files->connect("item_activated", this, "_file_list_activate_file");
  			button_hist_next->connect("pressed", this, "_fw_history");
  			button_hist_prev->connect("pressed", this, "_bw_history");
  			tree_search_box->set_right_icon(get_icon("Search", ei));
  			tree_search_box->set_clear_button_enabled(true);
  			file_list_search_box->set_right_icon(get_icon("Search", ei));
  			file_list_search_box->set_clear_button_enabled(true);
  
  			button_hist_next->set_icon(get_icon("Forward", ei));
  			button_hist_prev->set_icon(get_icon("Back", ei));
  			file_list_popup->connect("id_pressed", this, "_file_list_rmb_option");
  			tree_popup->connect("id_pressed", this, "_tree_rmb_option");
  
  			current_path->connect("text_entered", this, "_navigate_to_path");
  
  			always_show_folders = bool(EditorSettings::get_singleton()->get("docks/filesystem/always_show_folders"));
  
  			set_file_list_display_mode(FileSystemDock::FILE_LIST_DISPLAY_LIST);
  
  			_update_display_mode();
  
  			if (EditorFileSystem::get_singleton()->is_scanning()) {
  				_set_scanning_mode();
  			} else {
  				_update_tree(Vector<String>(), true);
  			}
  		} break;
  
  		case NOTIFICATION_PROCESS: {
  			if (EditorFileSystem::get_singleton()->is_scanning()) {
  				scanning_progress->set_value(EditorFileSystem::get_singleton()->get_scanning_progress() * 100);
  			}
  		} break;
  
  		case NOTIFICATION_DRAG_BEGIN: {
  			Dictionary dd = get_viewport()->gui_get_drag_data();
  			if (tree->is_visible_in_tree() && dd.has("type")) {
  				if (dd.has("favorite")) {
  					if ((String(dd["favorite"]) == "all"))
  						tree->set_drop_mode_flags(Tree::DROP_MODE_INBETWEEN);
  				} else if ((String(dd["type"]) == "files") || (String(dd["type"]) == "files_and_dirs") || (String(dd["type"]) == "resource")) {
  					tree->set_drop_mode_flags(Tree::DROP_MODE_ON_ITEM | Tree::DROP_MODE_INBETWEEN);
  				}
  			}
  		} break;
  
  		case NOTIFICATION_DRAG_END: {
  			tree->set_drop_mode_flags(0);
  		} break;
  
  		case NOTIFICATION_THEME_CHANGED: {
  			if (is_visible_in_tree()) {
  				_update_display_mode(true);
  			}
  		} break;
  
  		case EditorSettings::NOTIFICATION_EDITOR_SETTINGS_CHANGED: {
  			// Update icons.
  			String ei = "EditorIcons";
  			button_reload->set_icon(get_icon("Reload", ei));
  			button_toggle_display_mode->set_icon(get_icon("Panels2", ei));
  			button_hist_next->set_icon(get_icon("Forward", ei));
  			button_hist_prev->set_icon(get_icon("Back", ei));
  			if (file_list_display_mode == FILE_LIST_DISPLAY_LIST) {
  				button_file_list_display_mode->set_icon(get_icon("FileThumbnail", "EditorIcons"));
  			} else {
  				button_file_list_display_mode->set_icon(get_icon("FileList", "EditorIcons"));
  			}
  
  			tree_search_box->set_right_icon(get_icon("Search", ei));
  			tree_search_box->set_clear_button_enabled(true);
  			file_list_search_box->set_right_icon(get_icon("Search", ei));
  			file_list_search_box->set_clear_button_enabled(true);
  
  			// Update always show folders.
  			bool new_always_show_folders = bool(EditorSettings::get_singleton()->get("docks/filesystem/always_show_folders"));
  			if (new_always_show_folders != always_show_folders) {
  				always_show_folders = new_always_show_folders;
  				_update_file_list(true);
  			}
  
  			// Change full tree mode.
  			_update_display_mode();
  		} break;
  	}
  }
  
  void FileSystemDock::_tree_multi_selected(Object *p_item, int p_column, bool p_selected) {
  	// Update the import dock.
  	import_dock_needs_update = true;
  	call_deferred("_update_import_dock");
  
  	// Return if we don't select something new.
  	if (!p_selected)
  		return;
  
  	// Tree item selected.
  	TreeItem *selected = tree->get_selected();
  	if (!selected)
  		return;
  
  	TreeItem *favorites_item = tree->get_root()->get_children();
  	if (selected->get_parent() == favorites_item && !String(selected->get_metadata(0)).ends_with("/")) {
  		// Go to the favorites if we click in the favorites and the path has changed.
  		path = "Favorites";
  	} else {
  		path = selected->get_metadata(0);
  		// Note: the "Favorites" item also leads to this path.
  	}
  
  	// Set the current path.
  	_set_current_path_text(path);
  	_push_to_history();
  
  	// Update the file list.
  	if (!updating_tree && display_mode == DISPLAY_MODE_SPLIT) {
  		_update_file_list(false);
  	}
  }
  
  String FileSystemDock::get_selected_path() const {
  	if (path.ends_with("/"))
  		return path;
  	else
  		return path.get_base_dir();
  }
  
  String FileSystemDock::get_current_path() const {
  	return path;
  }
  
  void FileSystemDock::_set_current_path_text(const String &p_path) {
  	if (p_path == "Favorites") {
  		current_path->set_text(TTR("Favorites"));
  	} else {
  		current_path->set_text(path);
  	}
  }
  
  void FileSystemDock::_navigate_to_path(const String &p_path, bool p_select_in_favorites) {
  	if (p_path == "Favorites") {
  		path = p_path;
  	} else {
  		String target_path = p_path;
  		// If the path is a file, do not only go to the directory in the tree, also select the file in the file list.
  		if (target_path.ends_with("/")) {
  			target_path = target_path.substr(0, target_path.length() - 1);
  		}
  		DirAccess *dirAccess = DirAccess::open("res://");
  		if (dirAccess->file_exists(p_path)) {
  			path = target_path;
  		} else if (dirAccess->dir_exists(p_path)) {
  			path = target_path + "/";
  		} else {
  			memdelete(dirAccess);
  			ERR_FAIL_MSG(vformat("Cannot navigate to '%s' as it has not been found in the file system!", p_path));
  		}
  		memdelete(dirAccess);
  	}
  
  	_set_current_path_text(path);
  	_push_to_history();
  
  	_update_tree(_compute_uncollapsed_paths(), false, p_select_in_favorites);
  	if (display_mode == DISPLAY_MODE_SPLIT) {
  		_update_file_list(false);
  		files->get_v_scroll()->set_value(0);
  	}
  
  	String file_name = p_path.get_file();
  	if (!file_name.empty()) {
  		for (int i = 0; i < files->get_item_count(); i++) {
  			if (files->get_item_text(i) == file_name) {
  				files->select(i, true);
  				files->ensure_current_is_visible();
  				break;
  			}
  		}
  	}
  }
  
  void FileSystemDock::navigate_to_path(const String &p_path) {
  	file_list_search_box->clear();
  	_navigate_to_path(p_path);
  }
  
  void FileSystemDock::_file_list_thumbnail_done(const String &p_path, const Ref<Texture> &p_preview, const Ref<Texture> &p_small_preview, const Variant &p_udata) {
  	if ((file_list_vb->is_visible_in_tree() || path == p_path.get_base_dir()) && p_preview.is_valid()) {
  		Array uarr = p_udata;
  		int idx = uarr[0];
  		String file = uarr[1];
  		if (idx < files->get_item_count() && files->get_item_text(idx) == file && files->get_item_metadata(idx) == p_path) {
  			if (file_list_display_mode == FILE_LIST_DISPLAY_LIST) {
  				if (p_small_preview.is_valid())
  					files->set_item_icon(idx, p_small_preview);
  			} else {
  				files->set_item_icon(idx, p_preview);
  			}
  		}
  	}
  }
  
  void FileSystemDock::_tree_thumbnail_done(const String &p_path, const Ref<Texture> &p_preview, const Ref<Texture> &p_small_preview, const Variant &p_udata) {
  	if (p_small_preview.is_valid()) {
  		Array uarr = p_udata;
  		if (tree_update_id == (int)uarr[0]) {
  			TreeItem *file_item = Object::cast_to<TreeItem>(uarr[1]);
  			if (file_item) {
  				file_item->set_icon(0, p_small_preview);
  			}
  		}
  	}
  }
  
  void FileSystemDock::_toggle_file_display() {
  	_set_file_display(file_list_display_mode != FILE_LIST_DISPLAY_LIST);
  	emit_signal("display_mode_changed");
  }
  
  void FileSystemDock::_set_file_display(bool p_active) {
  	if (p_active) {
  		file_list_display_mode = FILE_LIST_DISPLAY_LIST;
  		button_file_list_display_mode->set_icon(get_icon("FileThumbnail", "EditorIcons"));
  		button_file_list_display_mode->set_tooltip(TTR("View items as a grid of thumbnails."));
  	} else {
  		file_list_display_mode = FILE_LIST_DISPLAY_THUMBNAILS;
  		button_file_list_display_mode->set_icon(get_icon("FileList", "EditorIcons"));
  		button_file_list_display_mode->set_tooltip(TTR("View items as a list."));
  	}
  
  	_update_file_list(true);
  }
  
  bool FileSystemDock::_is_file_type_disabled_by_feature_profile(const StringName &p_class) {
  	Ref<EditorFeatureProfile> profile = EditorFeatureProfileManager::get_singleton()->get_current_profile();
  	if (profile.is_null()) {
  		return false;
  	}
  
  	StringName class_name = p_class;
  
  	while (class_name != StringName()) {
  
  		if (profile->is_class_disabled(class_name)) {
  			return true;
  		}
  		class_name = ClassDB::get_parent_class(class_name);
  	}
  
  	return false;
  }
  
  void FileSystemDock::_search(EditorFileSystemDirectory *p_path, List<FileInfo> *matches, int p_max_items) {
  	if (matches->size() > p_max_items)
  		return;
  
  	for (int i = 0; i < p_path->get_subdir_count(); i++) {
  		_search(p_path->get_subdir(i), matches, p_max_items);
  	}
  
  	for (int i = 0; i < p_path->get_file_count(); i++) {
  		String file = p_path->get_file(i);
  
  		if (file.to_lower().find(searched_string) != -1) {
  
  			FileInfo fi;
  			fi.name = file;
  			fi.type = p_path->get_file_type(i);
  			fi.path = p_path->get_file_path(i);
  			fi.import_broken = !p_path->get_file_import_is_valid(i);
  
  			if (_is_file_type_disabled_by_feature_profile(fi.type)) {
  				// This type is disabled, will not appear here.
  				continue;
  			}
  
  			matches->push_back(fi);
  			if (matches->size() > p_max_items)
  				return;
  		}
  	}
  }
  
  void FileSystemDock::_update_file_list(bool p_keep_selection) {
  	// Register the previously selected items.
  	Set<String> cselection;
  	if (p_keep_selection) {
  		for (int i = 0; i < files->get_item_count(); i++) {
  			if (files->is_selected(i))
  				cselection.insert(files->get_item_text(i));
  		}
  	}
  
  	files->clear();
  
  	_set_current_path_text(path);
  
  	String directory = path;
  	String file = "";
  
  	String ei = "EditorIcons";
  	int thumbnail_size = EditorSettings::get_singleton()->get("docks/filesystem/thumbnail_size");
  	thumbnail_size *= EDSCALE;
  	Ref<Texture> folder_thumbnail;
  	Ref<Texture> file_thumbnail;
  	Ref<Texture> file_thumbnail_broken;
  
  	bool use_thumbnails = (file_list_display_mode == FILE_LIST_DISPLAY_THUMBNAILS);
  
  	if (use_thumbnails) {
  		// Thumbnails mode.
  		files->set_max_columns(0);
  		files->set_icon_mode(ItemList::ICON_MODE_TOP);
  		files->set_fixed_column_width(thumbnail_size * 3 / 2);
  		files->set_max_text_lines(2);
  		files->set_fixed_icon_size(Size2(thumbnail_size, thumbnail_size));
  
  		if (thumbnail_size < 64) {
  			folder_thumbnail = get_icon("FolderMediumThumb", ei);
  			file_thumbnail = get_icon("FileMediumThumb", ei);
  			file_thumbnail_broken = get_icon("FileDeadMediumThumb", ei);
  		} else {
  			folder_thumbnail = get_icon("FolderBigThumb", ei);
  			file_thumbnail = get_icon("FileBigThumb", ei);
  			file_thumbnail_broken = get_icon("FileDeadBigThumb", ei);
  		}
  	} else {
  		// No thumbnails.
  		files->set_icon_mode(ItemList::ICON_MODE_LEFT);
  		files->set_max_columns(1);
  		files->set_max_text_lines(1);
  		files->set_fixed_column_width(0);
  		files->set_fixed_icon_size(Size2());
  	}
  
  	Ref<Texture> folder_icon = (use_thumbnails) ? folder_thumbnail : get_icon("folder", "FileDialog");
  	const Color folder_color = get_color("folder_icon_modulate", "FileDialog");
  
  	// Build the FileInfo list.
  	List<FileInfo> filelist;
  	if (path == "Favorites") {
  		// Display the favorites.
  		Vector<String> favorites = EditorSettings::get_singleton()->get_favorites();
  		for (int i = 0; i < favorites.size(); i++) {
  			String favorite = favorites[i];
  			String text;
  			Ref<Texture> icon;
  			if (favorite == "res://") {
  				text = "/";
  				icon = folder_icon;
  				if (searched_string.length() == 0 || text.to_lower().find(searched_string) >= 0) {
  					files->add_item(text, icon, true);
  					files->set_item_metadata(files->get_item_count() - 1, favorite);
  				}
  			} else if (favorite.ends_with("/")) {
  				text = favorite.substr(0, favorite.length() - 1).get_file();
  				icon = folder_icon;
  				if (searched_string.length() == 0 || text.to_lower().find(searched_string) >= 0) {
  					files->add_item(text, icon, true);
  					files->set_item_metadata(files->get_item_count() - 1, favorite);
  				}
  			} else {
  				int index;
  				EditorFileSystemDirectory *efd = EditorFileSystem::get_singleton()->find_file(favorite, &index);
  
  				FileInfo fi;
  				fi.name = favorite.get_file();
  				fi.path = favorite;
  				if (efd) {
  					fi.type = efd->get_file_type(index);
  					fi.import_broken = !efd->get_file_import_is_valid(index);
  				} else {
  					fi.type = "";
  					fi.import_broken = true;
  				}
  
  				if (searched_string.length() == 0 || fi.name.to_lower().find(searched_string) >= 0) {
  					filelist.push_back(fi);
  				}
  			}
  		}
  	} else {
  		// Get infos on the directory + file.
  		if (directory.ends_with("/") && directory != "res://") {
  			directory = directory.substr(0, directory.length() - 1);
  		}
  		EditorFileSystemDirectory *efd = EditorFileSystem::get_singleton()->get_filesystem_path(directory);
  		if (!efd) {
  			directory = path.get_base_dir();
  			file = path.get_file();
  			efd = EditorFileSystem::get_singleton()->get_filesystem_path(directory);
  		}
  		if (!efd)
  			return;
  
  		if (searched_string.length() > 0) {
  			// Display the search results.
  			_search(EditorFileSystem::get_singleton()->get_filesystem(), &filelist, 128);
  		} else {
  			if (display_mode == DISPLAY_MODE_TREE_ONLY || always_show_folders) {
  				// Display folders in the list.
  				if (directory != "res://") {
  					files->add_item("..", folder_icon, true);
  
  					String bd = directory.get_base_dir();
  					if (bd != "res://" && !bd.ends_with("/"))
  						bd += "/";
  
  					files->set_item_metadata(files->get_item_count() - 1, bd);
  					files->set_item_selectable(files->get_item_count() - 1, false);
  					files->set_item_icon_modulate(files->get_item_count() - 1, folder_color);
  				}
  
  				for (int i = 0; i < efd->get_subdir_count(); i++) {
  					String dname = efd->get_subdir(i)->get_name();
  
  					files->add_item(dname, folder_icon, true);
  					files->set_item_metadata(files->get_item_count() - 1, directory.plus_file(dname) + "/");
  					files->set_item_icon_modulate(files->get_item_count() - 1, folder_color);
  
  					if (cselection.has(dname)) {
  						files->select(files->get_item_count() - 1, false);
  					}
  				}
  			}
  
  			// Display the folder content.
  			for (int i = 0; i < efd->get_file_count(); i++) {
  				FileInfo fi;
  				fi.name = efd->get_file(i);
  				fi.path = directory.plus_file(fi.name);
  				fi.type = efd->get_file_type(i);
  				fi.import_broken = !efd->get_file_import_is_valid(i);
  
  				filelist.push_back(fi);
  			}
  		}
  		filelist.sort();
  	}
  
  	// Fills the ItemList control node from the FileInfos.
  	String oi = "Object";
  	for (List<FileInfo>::Element *E = filelist.front(); E; E = E->next()) {
  		FileInfo *finfo = &(E->get());
  		String fname = finfo->name;
  		String fpath = finfo->path;
  		String ftype = finfo->type;
  
  		Ref<Texture> type_icon;
  		Ref<Texture> big_icon;
  
  		String tooltip = fpath;
  
  		// Select the icons.
  		if (!finfo->import_broken) {
  			type_icon = (has_icon(ftype, ei)) ? get_icon(ftype, ei) : get_icon(oi, ei);
  			big_icon = file_thumbnail;
  		} else {
  			type_icon = get_icon("ImportFail", ei);
  			big_icon = file_thumbnail_broken;
  			tooltip += "\n" + TTR("Status: Import of file failed. Please fix file and reimport manually.");
  		}
  
  		// Add the item to the ItemList.
  		int item_index;
  		if (use_thumbnails) {
  			files->add_item(fname, big_icon, true);
  			item_index = files->get_item_count() - 1;
  			files->set_item_metadata(item_index, fpath);
  			files->set_item_tag_icon(item_index, type_icon);
  
  		} else {
  			files->add_item(fname, type_icon, true);
  			item_index = files->get_item_count() - 1;
  			files->set_item_metadata(item_index, fpath);
  		}
  
  		// Generate the preview.
  		if (!finfo->import_broken) {
  			Array udata;
  			udata.resize(2);
  			udata[0] = item_index;
  			udata[1] = fname;
  			EditorResourcePreview::get_singleton()->queue_resource_preview(fpath, this, "_file_list_thumbnail_done", udata);
  		}
  
  		// Select the items.
  		if (cselection.has(fname))
  			files->select(item_index, false);
  
  		if (!p_keep_selection && file != "" && fname == file) {
  			files->select(item_index, true);
  			files->ensure_current_is_visible();
  		}
  
  		// Tooltip.
  		if (finfo->sources.size()) {
  			for (int j = 0; j < finfo->sources.size(); j++) {
  				tooltip += "\nSource: " + finfo->sources[j];
  			}
  		}
  		files->set_item_tooltip(item_index, tooltip);
  	}
  }
  
  void FileSystemDock::_select_file(const String &p_path, bool p_select_in_favorites) {
  	String fpath = p_path;
  	if (fpath.ends_with("/")) {
  		if (fpath != "res://") {
  			fpath = fpath.substr(0, fpath.length() - 1);
  		}
  	} else if (fpath != "Favorites") {
  		if (ResourceLoader::get_resource_type(fpath) == "PackedScene") {
  			editor->open_request(fpath);
  		} else {
  			editor->load_resource(fpath);
  		}
  	}
  	_navigate_to_path(fpath, p_select_in_favorites);
  }
  
  void FileSystemDock::_tree_activate_file() {
  	TreeItem *selected = tree->get_selected();
  	if (selected) {
  		String path = selected->get_metadata(0);
  		TreeItem *parent = selected->get_parent();
  		bool is_favorite = parent != NULL && parent->get_metadata(0) == "Favorites";
  
  		if ((!is_favorite && path.ends_with("/")) || path == "Favorites") {
  			bool collapsed = selected->is_collapsed();
  			selected->set_collapsed(!collapsed);
  		} else {
  			_select_file(path, is_favorite && !path.ends_with("/"));
  		}
  	}
  }
  
  void FileSystemDock::_file_list_activate_file(int p_idx) {
  	_select_file(files->get_item_metadata(p_idx));
  }
  
  void FileSystemDock::_preview_invalidated(const String &p_path) {
  	if (file_list_display_mode == FILE_LIST_DISPLAY_THUMBNAILS && p_path.get_base_dir() == path && searched_string.length() == 0 && file_list_vb->is_visible_in_tree()) {
  
  		for (int i = 0; i < files->get_item_count(); i++) {
  
  			if (files->get_item_metadata(i) == p_path) {
  				// Re-request preview.
  				Array udata;
  				udata.resize(2);
  				udata[0] = i;
  				udata[1] = files->get_item_text(i);
  				EditorResourcePreview::get_singleton()->queue_resource_preview(p_path, this, "_file_list_thumbnail_done", udata);
  				break;
  			}
  		}
  	}
  }
  
  void FileSystemDock::_fs_changed() {
  	button_hist_prev->set_disabled(history_pos == 0);
  	button_hist_next->set_disabled(history_pos == history.size() - 1);
  	scanning_vb->hide();
  	split_box->show();
  
  	if (tree->is_visible()) {
  		_update_tree(_compute_uncollapsed_paths());
  	}
  
  	if (file_list_vb->is_visible()) {
  		_update_file_list(true);
  	}
  
  	set_process(false);
  }
  
  void FileSystemDock::_set_scanning_mode() {
  	button_hist_prev->set_disabled(true);
  	button_hist_next->set_disabled(true);
  	split_box->hide();
  	scanning_vb->show();
  	set_process(true);
  	if (EditorFileSystem::get_singleton()->is_scanning()) {
  		scanning_progress->set_value(EditorFileSystem::get_singleton()->get_scanning_progress() * 100);
  	} else {
  		scanning_progress->set_value(0);
  	}
  }
  
  void FileSystemDock::_fw_history() {
  	if (history_pos < history.size() - 1)
  		history_pos++;
  
  	_update_history();
  }
  
  void FileSystemDock::_bw_history() {
  	if (history_pos > 0)
  		history_pos--;
  
  	_update_history();
  }
  
  void FileSystemDock::_update_history() {
  	path = history[history_pos];
  	_set_current_path_text(path);
  
  	if (tree->is_visible()) {
  		_update_tree(_compute_uncollapsed_paths());
  		tree->grab_focus();
  		tree->ensure_cursor_is_visible();
  	}
  
  	if (file_list_vb->is_visible()) {
  		_update_file_list(false);
  	}
  
  	button_hist_prev->set_disabled(history_pos == 0);
  	button_hist_next->set_disabled(history_pos == history.size() - 1);
  }
  
  void FileSystemDock::_push_to_history() {
  	if (history[history_pos] != path) {
  		history.resize(history_pos + 1);
  		history.push_back(path);
  		history_pos++;
  
  		if (history.size() > history_max_size) {
  			history.remove(0);
  			history_pos = history_max_size - 1;
  		}
  	}
  
  	button_hist_prev->set_disabled(history_pos == 0);
  	button_hist_next->set_disabled(history_pos == history.size() - 1);
  }
  
  void FileSystemDock::_get_all_items_in_dir(EditorFileSystemDirectory *efsd, Vector<String> &files, Vector<String> &folders) const {
  	if (efsd == NULL)
  		return;
  
  	for (int i = 0; i < efsd->get_subdir_count(); i++) {
  		folders.push_back(efsd->get_subdir(i)->get_path());
  		_get_all_items_in_dir(efsd->get_subdir(i), files, folders);
  	}
  	for (int i = 0; i < efsd->get_file_count(); i++) {
  		files.push_back(efsd->get_file_path(i));
  	}
  }
  
  void FileSystemDock::_find_remaps(EditorFileSystemDirectory *efsd, const Map<String, String> &renames, Vector<String> &to_remaps) const {
  	for (int i = 0; i < efsd->get_subdir_count(); i++) {
  		_find_remaps(efsd->get_subdir(i), renames, to_remaps);
  	}
  	for (int i = 0; i < efsd->get_file_count(); i++) {
  		Vector<String> deps = efsd->get_file_deps(i);
  		for (int j = 0; j < deps.size(); j++) {
  			if (renames.has(deps[j])) {
  				to_remaps.push_back(efsd->get_file_path(i));
  				break;
  			}
  		}
  	}
  }
  
  void FileSystemDock::_try_move_item(const FileOrFolder &p_item, const String &p_new_path,
  		Map<String, String> &p_file_renames, Map<String, String> &p_folder_renames) {
  	// Ensure folder paths end with "/".
  	String old_path = (p_item.is_file || p_item.path.ends_with("/")) ? p_item.path : (p_item.path + "/");
  	String new_path = (p_item.is_file || p_new_path.ends_with("/")) ? p_new_path : (p_new_path + "/");
  
  	if (new_path == old_path) {
  		return;
  	} else if (old_path == "res://") {
  		EditorNode::get_singleton()->add_io_error(TTR("Cannot move/rename resources root."));
  		return;
  	} else if (!p_item.is_file && new_path.begins_with(old_path)) {
  		// This check doesn't erroneously catch renaming to a longer name as folder paths always end with "/".
  		EditorNode::get_singleton()->add_io_error(TTR("Cannot move a folder into itself.") + "\n" + old_path + "\n");
  		return;
  	}
  
  	// Build a list of files which will have new paths as a result of this operation.
  	Vector<String> file_changed_paths;
  	Vector<String> folder_changed_paths;
  	if (p_item.is_file) {
  		file_changed_paths.push_back(old_path);
  	} else {
  		folder_changed_paths.push_back(old_path);
  		_get_all_items_in_dir(EditorFileSystem::get_singleton()->get_filesystem_path(old_path), file_changed_paths, folder_changed_paths);
  	}
  
  	DirAccess *da = DirAccess::create(DirAccess::ACCESS_RESOURCES);
  	print_verbose("Moving " + old_path + " -> " + new_path);
  	Error err = da->rename(old_path, new_path);
  	if (err == OK) {
  		// Move/Rename any corresponding import settings too.
  		if (p_item.is_file && FileAccess::exists(old_path + ".import")) {
  			err = da->rename(old_path + ".import", new_path + ".import");
  			if (err != OK) {
  				EditorNode::get_singleton()->add_io_error(TTR("Error moving:") + "\n" + old_path + ".import\n");
  			}
  		}
  
  		// Update scene if it is open.
  		for (int i = 0; i < file_changed_paths.size(); ++i) {
  			String new_item_path = p_item.is_file ? new_path : file_changed_paths[i].replace_first(old_path, new_path);
  			if (ResourceLoader::get_resource_type(new_item_path) == "PackedScene" && editor->is_scene_open(file_changed_paths[i])) {
  				EditorData *ed = &editor->get_editor_data();
  				for (int j = 0; j < ed->get_edited_scene_count(); j++) {
  					if (ed->get_scene_path(j) == file_changed_paths[i]) {
  						ed->get_edited_scene_root(j)->set_filename(new_item_path);
  						editor->save_layout();
  						break;
  					}
  				}
  			}
  		}
  
  		// Only treat as a changed dependency if it was successfully moved.
  		for (int i = 0; i < file_changed_paths.size(); ++i) {
  			p_file_renames[file_changed_paths[i]] = file_changed_paths[i].replace_first(old_path, new_path);
  			print_verbose("  Remap: " + file_changed_paths[i] + " -> " + p_file_renames[file_changed_paths[i]]);
  			emit_signal("files_moved", file_changed_paths[i], p_file_renames[file_changed_paths[i]]);
  		}
  		for (int i = 0; i < folder_changed_paths.size(); ++i) {
  			p_folder_renames[folder_changed_paths[i]] = folder_changed_paths[i].replace_first(old_path, new_path);
  			emit_signal("folder_moved", folder_changed_paths[i], p_folder_renames[folder_changed_paths[i]].substr(0, p_folder_renames[folder_changed_paths[i]].length() - 1));
  		}
  	} else {
  		EditorNode::get_singleton()->add_io_error(TTR("Error moving:") + "\n" + old_path + "\n");
  	}
  	memdelete(da);
  }
  
  void FileSystemDock::_try_duplicate_item(const FileOrFolder &p_item, const String &p_new_path) const {
  	// Ensure folder paths end with "/".
  	String old_path = (p_item.is_file || p_item.path.ends_with("/")) ? p_item.path : (p_item.path + "/");
  	String new_path = (p_item.is_file || p_new_path.ends_with("/")) ? p_new_path : (p_new_path + "/");
  
  	if (new_path == old_path) {
  		return;
  	} else if (old_path == "res://") {
  		EditorNode::get_singleton()->add_io_error(TTR("Cannot move/rename resources root."));
  		return;
  	} else if (!p_item.is_file && new_path.begins_with(old_path)) {
  		// This check doesn't erroneously catch renaming to a longer name as folder paths always end with "/".
  		EditorNode::get_singleton()->add_io_error(TTR("Cannot move a folder into itself.") + "\n" + old_path + "\n");
  		return;
  	}
  
  	DirAccess *da = DirAccess::create(DirAccess::ACCESS_RESOURCES);
  	print_verbose("Duplicating " + old_path + " -> " + new_path);
  	Error err = p_item.is_file ? da->copy(old_path, new_path) : da->copy_dir(old_path, new_path);
  	if (err == OK) {
  		// Move/Rename any corresponding import settings too.
  		if (p_item.is_file && FileAccess::exists(old_path + ".import")) {
  			err = da->copy(old_path + ".import", new_path + ".import");
  			if (err != OK) {
  				EditorNode::get_singleton()->add_io_error(TTR("Error duplicating:") + "\n" + old_path + ".import\n");
  			}
  		}
  	} else {
  		EditorNode::get_singleton()->add_io_error(TTR("Error duplicating:") + "\n" + old_path + "\n");
  	}
  	memdelete(da);
  }
  
  void FileSystemDock::_update_resource_paths_after_move(const Map<String, String> &p_renames) const {
  	// Rename all resources loaded, be it subresources or actual resources.
  	List<Ref<Resource> > cached;
  	ResourceCache::get_cached_resources(&cached);
  
  	for (List<Ref<Resource> >::Element *E = cached.front(); E; E = E->next()) {
  		Ref<Resource> r = E->get();
  
  		String base_path = r->get_path();
  		String extra_path;
  		int sep_pos = r->get_path().find("::");
  		if (sep_pos >= 0) {
  			extra_path = base_path.substr(sep_pos, base_path.length());
  			base_path = base_path.substr(0, sep_pos);
  		}
  
  		if (p_renames.has(base_path)) {
  			base_path = p_renames[base_path];
  		}
  
  		r->set_path(base_path + extra_path);
  	}
  
  	for (int i = 0; i < EditorNode::get_editor_data().get_edited_scene_count(); i++) {
  		String path;
  		if (i == EditorNode::get_editor_data().get_edited_scene()) {
  			if (!get_tree()->get_edited_scene_root())
  				continue;
  
  			path = get_tree()->get_edited_scene_root()->get_filename();
  		} else {
  			path = EditorNode::get_editor_data().get_scene_path(i);
  		}
  
  		if (p_renames.has(path)) {
  			path = p_renames[path];
  		}
  
  		if (i == EditorNode::get_editor_data().get_edited_scene()) {
  			get_tree()->get_edited_scene_root()->set_filename(path);
  		} else {
  			EditorNode::get_editor_data().set_scene_path(i, path);
  		}
  	}
  }
  
  void FileSystemDock::_update_dependencies_after_move(const Map<String, String> &p_renames) const {
  	// The following code assumes that the following holds:
  	// 1) EditorFileSystem contains the old paths/folder structure from before the rename/move.
  	// 2) ResourceLoader can use the new paths without needing to call rescan.
  	Vector<String> remaps;
  	_find_remaps(EditorFileSystem::get_singleton()->get_filesystem(), p_renames, remaps);
  	for (int i = 0; i < remaps.size(); ++i) {
  		// Because we haven't called a rescan yet the found remap might still be an old path itself.
  		String file = p_renames.has(remaps[i]) ? p_renames[remaps[i]] : remaps[i];
  		print_verbose("Remapping dependencies for: " + file);
  		Error err = ResourceLoader::rename_dependencies(file, p_renames);
  		if (err == OK) {
  			if (ResourceLoader::get_resource_type(file) == "PackedScene")
  				editor->reload_scene(file);
  		} else {
  			EditorNode::get_singleton()->add_io_error(TTR("Unable to update dependencies:") + "\n" + remaps[i] + "\n");
  		}
  	}
  }
  
  void FileSystemDock::_update_project_settings_after_move(const Map<String, String> &p_renames) const {
  	// Find all project settings of type FILE and replace them if needed.
  	const Map<StringName, PropertyInfo> prop_info = ProjectSettings::get_singleton()->get_custom_property_info();
  	for (const Map<StringName, PropertyInfo>::Element *E = prop_info.front(); E; E = E->next()) {
  		if (E->get().hint == PROPERTY_HINT_FILE) {
  			String old_path = GLOBAL_GET(E->key());
  			if (p_renames.has(old_path)) {
  				ProjectSettings::get_singleton()->set_setting(E->key(), p_renames[old_path]);
  			}
  		};
  	}
  
  	// Also search for the file in autoload, as they are stored differently from normal files.
  	List<PropertyInfo> property_list;
  	ProjectSettings::get_singleton()->get_property_list(&property_list);
  	for (const List<PropertyInfo>::Element *E = property_list.front(); E; E = E->next()) {
  		if (E->get().name.begins_with("autoload/")) {
  			// If the autoload resource paths has a leading "*", it indicates that it is a Singleton,
  			// so we have to handle both cases when updating.
  			String autoload = GLOBAL_GET(E->get().name);
  			String autoload_singleton = autoload.substr(1, autoload.length());
  			if (p_renames.has(autoload)) {
  				ProjectSettings::get_singleton()->set_setting(E->get().name, p_renames[autoload]);
  			} else if (autoload.begins_with("*") && p_renames.has(autoload_singleton)) {
  				ProjectSettings::get_singleton()->set_setting(E->get().name, "*" + p_renames[autoload_singleton]);
  			}
  		}
  	}
  	ProjectSettings::get_singleton()->save();
  }
  
  void FileSystemDock::_update_favorites_list_after_move(const Map<String, String> &p_files_renames, const Map<String, String> &p_folders_renames) const {
  	Vector<String> favorites = EditorSettings::get_singleton()->get_favorites();
  	Vector<String> new_favorites;
  
  	for (int i = 0; i < favorites.size(); i++) {
  		String old_path = favorites[i];
  		if (p_folders_renames.has(old_path)) {
  			new_favorites.push_back(p_folders_renames[old_path]);
  		} else if (p_files_renames.has(old_path)) {
  			new_favorites.push_back(p_files_renames[old_path]);
  		} else {
  			new_favorites.push_back(old_path);
  		}
  	}
  
  	EditorSettings::get_singleton()->set_favorites(new_favorites);
  }
  
  void FileSystemDock::_save_scenes_after_move(const Map<String, String> &p_renames) const {
  	Vector<String> remaps;
  	_find_remaps(EditorFileSystem::get_singleton()->get_filesystem(), p_renames, remaps);
  	Vector<String> new_filenames;
  
  	for (int i = 0; i < remaps.size(); ++i) {
  		String file = p_renames.has(remaps[i]) ? p_renames[remaps[i]] : remaps[i];
  		if (ResourceLoader::get_resource_type(file) == "PackedScene") {
  			new_filenames.push_back(file);
  		}
  	}
  
  	editor->save_scene_list(new_filenames);
  }
  
  void FileSystemDock::_make_dir_confirm() {
  	String dir_name = make_dir_dialog_text->get_text().strip_edges();
  
  	if (dir_name.length() == 0) {
  		EditorNode::get_singleton()->show_warning(TTR("No name provided."));
  		return;
  	} else if (dir_name.find("/") != -1 || dir_name.find("\\") != -1 || dir_name.find(":") != -1 || dir_name.find("*") != -1 ||
  			   dir_name.find("|") != -1 || dir_name.find(">") != -1 || dir_name.ends_with(".") || dir_name.ends_with(" ")) {
  		EditorNode::get_singleton()->show_warning(TTR("Provided name contains invalid characters."));
  		return;
  	}
  
  	String directory = path;
  	if (!directory.ends_with("/")) {
  		directory = directory.get_base_dir();
  	}
  	print_verbose("Making folder " + dir_name + " in " + directory);
  	DirAccess *da = DirAccess::create(DirAccess::ACCESS_RESOURCES);
  	Error err = da->change_dir(directory);
  	if (err == OK) {
  		err = da->make_dir(dir_name);
  	}
  	memdelete(da);
  
  	if (err == OK) {
  		print_verbose("FileSystem: calling rescan.");
  		_rescan();
  	} else {
  		EditorNode::get_singleton()->show_warning(TTR("Could not create folder."));
  	}
  }
  
  void FileSystemDock::_make_scene_confirm() {
  	String scene_name = make_scene_dialog_text->get_text().strip_edges();
  
  	if (scene_name.length() == 0) {
  		EditorNode::get_singleton()->show_warning(TTR("No name provided."));
  		return;
  	}
  
  	String directory = path;
  	if (!directory.ends_with("/")) {
  		directory = directory.get_base_dir();
  	}
  
  	String extension = scene_name.get_extension();
  	List<String> extensions;
  	Ref<PackedScene> sd = memnew(PackedScene);
  	ResourceSaver::get_recognized_extensions(sd, &extensions);
  
  	bool extension_correct = false;
  	for (List<String>::Element *E = extensions.front(); E; E = E->next()) {
  		if (E->get() == extension) {
  			extension_correct = true;
  			break;
  		}
  	}
  	if (!extension_correct)
  		scene_name = scene_name.get_basename() + ".tscn";
  
  	scene_name = directory.plus_file(scene_name);
  
  	DirAccess *da = DirAccess::create(DirAccess::ACCESS_RESOURCES);
  	if (da->file_exists(scene_name)) {
  		EditorNode::get_singleton()->show_warning(TTR("A file or folder with this name already exists."));
  		memdelete(da);
  		return;
  	}
  	memdelete(da);
  
  	int idx = editor->new_scene();
  	editor->get_editor_data().set_scene_path(idx, scene_name);
  }
  
  void FileSystemDock::_file_deleted(String p_file) {
  	emit_signal("file_deleted", p_file);
  }
  
  void FileSystemDock::_folder_deleted(String p_folder) {
  	emit_signal("folder_deleted", p_folder);
  }
  
  void FileSystemDock::_rename_operation_confirm() {
  	String new_name = rename_dialog_text->get_text().strip_edges();
  	if (new_name.length() == 0) {
  		EditorNode::get_singleton()->show_warning(TTR("No name provided."));
  		return;
  	} else if (new_name.find("/") != -1 || new_name.find("\\") != -1 || new_name.find(":") != -1) {
  		EditorNode::get_singleton()->show_warning(TTR("Name contains invalid characters."));
  		return;
  	}
  
  	String old_path = to_rename.path.ends_with("/") ? to_rename.path.substr(0, to_rename.path.length() - 1) : to_rename.path;
  	String new_path = old_path.get_base_dir().plus_file(new_name);
  	if (old_path == new_path) {
  		return;
  	}
  
  	if (EditorFileSystem::get_singleton()->is_group_file(old_path)) {
  		EditorFileSystem::get_singleton()->move_group_file(old_path, new_path);
  	}
  
  	// Present a more user friendly warning for name conflict.
  	DirAccess *da = DirAccess::create(DirAccess::ACCESS_RESOURCES);
  #if defined(WINDOWS_ENABLED) || defined(UWP_ENABLED)
  	// Workaround case insensitivity on Windows.
  	if ((da->file_exists(new_path) || da->dir_exists(new_path)) && new_path.to_lower() != old_path.to_lower()) {
  #else
  	if (da->file_exists(new_path) || da->dir_exists(new_path)) {
  #endif
  		EditorNode::get_singleton()->show_warning(TTR("A file or folder with this name already exists."));
  		memdelete(da);
  		return;
  	}
  	memdelete(da);
  
  	Map<String, String> file_renames;
  	Map<String, String> folder_renames;
  	_try_move_item(to_rename, new_path, file_renames, folder_renames);
  
  	int current_tab = editor->get_current_tab();
  	_save_scenes_after_move(file_renames); // save scenes before updating
  	_update_dependencies_after_move(file_renames);
  	_update_resource_paths_after_move(file_renames);
  	_update_project_settings_after_move(file_renames);
  	_update_favorites_list_after_move(file_renames, folder_renames);
  
  	editor->set_current_tab(current_tab);
  
  	print_verbose("FileSystem: calling rescan.");
  	_rescan();
  
  	print_verbose("FileSystem: saving moved scenes.");
  	_save_scenes_after_move(file_renames);
  }
  
  void FileSystemDock::_duplicate_operation_confirm() {
  	String new_name = duplicate_dialog_text->get_text().strip_edges();
  	if (new_name.length() == 0) {
  		EditorNode::get_singleton()->show_warning(TTR("No name provided."));
  		return;
  	} else if (new_name.find("/") != -1 || new_name.find("\\") != -1 || new_name.find(":") != -1) {
  		EditorNode::get_singleton()->show_warning(TTR("Name contains invalid characters."));
  		return;
  	}
  
  	String base_dir = to_duplicate.path.get_base_dir();
  	// get_base_dir() returns "some/path" if the original path was "some/path/", so work it around.
  	if (to_duplicate.path.ends_with("/")) {
  		base_dir = base_dir.get_base_dir();
  	}
  
  	String new_path = base_dir.plus_file(new_name);
  
  	// Present a more user friendly warning for name conflict
  	DirAccess *da = DirAccess::create(DirAccess::ACCESS_RESOURCES);
  	if (da->file_exists(new_path) || da->dir_exists(new_path)) {
  		EditorNode::get_singleton()->show_warning(TTR("A file or folder with this name already exists."));
  		memdelete(da);
  		return;
  	}
  	memdelete(da);
  
  	_try_duplicate_item(to_duplicate, new_path);
  
  	// Rescan everything.
  	print_verbose("FileSystem: calling rescan.");
  	_rescan();
  }
  
  void FileSystemDock::_move_with_overwrite() {
  	_move_operation_confirm(to_move_path, true);
  }
  
  bool FileSystemDock::_check_existing() {
  	String &p_to_path = to_move_path;
  	for (int i = 0; i < to_move.size(); i++) {
  		String ol_pth = to_move[i].path.ends_with("/") ? to_move[i].path.substr(0, to_move[i].path.length() - 1) : to_move[i].path;
  		String p_new_path = p_to_path.plus_file(ol_pth.get_file());
  		FileOrFolder p_item = to_move[i];
  
  		String old_path = (p_item.is_file || p_item.path.ends_with("/")) ? p_item.path : (p_item.path + "/");
  		String new_path = (p_item.is_file || p_new_path.ends_with("/")) ? p_new_path : (p_new_path + "/");
  
  		if (p_item.is_file && FileAccess::exists(new_path)) {
  			return false;
  		} else if (!p_item.is_file && DirAccess::exists(new_path)) {
  			return false;
  		}
  	}
  	return true;
  }
  
  void FileSystemDock::_move_operation_confirm(const String &p_to_path, bool overwrite) {
  	if (!overwrite) {
  		to_move_path = p_to_path;
  		bool can_move = _check_existing();
  		if (!can_move) {
  			// Ask to do something.
  			overwrite_dialog->popup_centered_minsize();
  			overwrite_dialog->grab_focus();
  			return;
  		}
  	}
  
  	// Check groups.
  	for (int i = 0; i < to_move.size(); i++) {
  
  		print_line("is group: " + to_move[i].path + ": " + itos(EditorFileSystem::get_singleton()->is_group_file(to_move[i].path)));
  		if (to_move[i].is_file && EditorFileSystem::get_singleton()->is_group_file(to_move[i].path)) {
  			print_line("move to: " + p_to_path.plus_file(to_move[i].path.get_file()));
  			EditorFileSystem::get_singleton()->move_group_file(to_move[i].path, p_to_path.plus_file(to_move[i].path.get_file()));
  		}
  	}
  
  	Map<String, String> file_renames;
  	Map<String, String> folder_renames;
  	bool is_moved = false;
  	for (int i = 0; i < to_move.size(); i++) {
  		String old_path = to_move[i].path.ends_with("/") ? to_move[i].path.substr(0, to_move[i].path.length() - 1) : to_move[i].path;
  		String new_path = p_to_path.plus_file(old_path.get_file());
  		if (old_path != new_path) {
  			_try_move_item(to_move[i], new_path, file_renames, folder_renames);
  			is_moved = true;
  		}
  	}
  
  	if (is_moved) {
  		int current_tab = editor->get_current_tab();
  		_save_scenes_after_move(file_renames); //save scenes before updating
  		_update_dependencies_after_move(file_renames);
  		_update_resource_paths_after_move(file_renames);
  		_update_project_settings_after_move(file_renames);
  		_update_favorites_list_after_move(file_renames, folder_renames);
  
  		editor->set_current_tab(current_tab);
  
  		print_verbose("FileSystem: calling rescan.");
  		_rescan();
  
  		print_verbose("FileSystem: saving moved scenes.");
  		_save_scenes_after_move(file_renames);
  	}
  }
  
  Vector<String> FileSystemDock::_tree_get_selected(bool remove_self_inclusion) {
  	// Build a list of selected items with the active one at the first position.
  	Vector<String> selected_strings;
  
  	TreeItem *favorites_item = tree->get_root()->get_children();
  	TreeItem *active_selected = tree->get_selected();
  	if (active_selected && active_selected != favorites_item) {
  		selected_strings.push_back(active_selected->get_metadata(0));
  	}
  
  	TreeItem *selected = tree->get_root();
  	selected = tree->get_next_selected(selected);
  	while (selected) {
  		if (selected != active_selected && selected != favorites_item) {
  			selected_strings.push_back(selected->get_metadata(0));
  		}
  		selected = tree->get_next_selected(selected);
  	}
  
  	if (remove_self_inclusion) {
  		selected_strings = _remove_self_included_paths(selected_strings);
  	}
  	return selected_strings;
  }
  
  Vector<String> FileSystemDock::_remove_self_included_paths(Vector<String> selected_strings) {
  	// Remove paths or files that are included into another.
  	if (selected_strings.size() > 1) {
  		selected_strings.sort_custom<NaturalNoCaseComparator>();
  		String last_path = "";
  		for (int i = 0; i < selected_strings.size(); i++) {
  			if (last_path != "" && selected_strings[i].begins_with(last_path)) {
  				selected_strings.remove(i);
  				i--;
  			}
  			if (selected_strings[i].ends_with("/")) {
  				last_path = selected_strings[i];
  			}
  		}
  	}
  	return selected_strings;
  }
  
  void FileSystemDock::_tree_rmb_option(int p_option) {
  	Vector<String> selected_strings = _tree_get_selected(false);
  
  	// Execute the current option.
  	switch (p_option) {
  		case FOLDER_EXPAND_ALL:
  		case FOLDER_COLLAPSE_ALL: {
  			// Expand or collapse the folder
  			if (selected_strings.size() == 1) {
  				bool is_collapsed = (p_option == FOLDER_COLLAPSE_ALL);
  
  				Vector<TreeItem *> needs_check;
  				needs_check.push_back(tree->get_selected());
  
  				while (needs_check.size()) {
  					needs_check[0]->set_collapsed(is_collapsed);
  
  					TreeItem *child = needs_check[0]->get_children();
  					while (child) {
  						needs_check.push_back(child);
  						child = child->get_next();
  					}
  
  					needs_check.remove(0);
  				}
  			}
  		} break;
  		default: {
  			_file_option(p_option, selected_strings);
  		} break;
  	}
  }
  
  void FileSystemDock::_file_list_rmb_option(int p_option) {
  	Vector<int> selected_id = files->get_selected_items();
  	Vector<String> selected;
  	for (int i = 0; i < selected_id.size(); i++) {
  		selected.push_back(files->get_item_metadata(selected_id[i]));
  	}
  	_file_option(p_option, selected);
  }
  
  void FileSystemDock::_file_option(int p_option, const Vector<String> &p_selected) {
  	// The first one should be the active item.
  
  	switch (p_option) {
  		case FILE_SHOW_IN_EXPLORER: {
  			// Show the file/folder in the OS explorer.
  			String fpath = path;
  			if (path == "Favorites") {
  				fpath = p_selected[0];
  			}
  
  			if (!fpath.ends_with("/")) {
  				fpath = fpath.get_base_dir();
  			}
  			String dir = ProjectSettings::get_singleton()->globalize_path(fpath);
  			OS::get_singleton()->shell_open(String("file://") + dir);
  		} break;
  
  		case FILE_OPEN: {
  			// Open folders.
  			TreeItem *selected = tree->get_root();
  			selected = tree->get_next_selected(selected);
  			while (selected) {
  				if (p_selected.find(selected->get_metadata(0)) >= 0) {
  					selected->set_collapsed(false);
  				}
  				selected = tree->get_next_selected(selected);
  			}
  			// Open the file.
  			for (int i = 0; i < p_selected.size(); i++) {
  				_select_file(p_selected[i]);
  			}
  		} break;
  
  		case FILE_INHERIT: {
  			// Create a new scene inherited from the selected one.
  			if (p_selected.size() == 1) {
  				emit_signal("inherit", p_selected[0]);
  			}
  		} break;
  
  		case FILE_INSTANCE: {
  			// Instance all selected scenes.
  			Vector<String> paths;
  			for (int i = 0; i < p_selected.size(); i++) {
  				String fpath = p_selected[i];
  				if (EditorFileSystem::get_singleton()->get_file_type(fpath) == "PackedScene") {
  					paths.push_back(fpath);
  				}
  			}
  			if (!paths.empty()) {
  				emit_signal("instance", paths);
  			}
  		} break;
  
  		case FILE_ADD_FAVORITE: {
  			// Add the files from favorites.
  			Vector<String> favorites = EditorSettings::get_singleton()->get_favorites();
  			for (int i = 0; i < p_selected.size(); i++) {
  				if (favorites.find(p_selected[i]) == -1) {
  					favorites.push_back(p_selected[i]);
  				}
  			}
  			EditorSettings::get_singleton()->set_favorites(favorites);
  			_update_tree(_compute_uncollapsed_paths());
  		} break;
  
  		case FILE_REMOVE_FAVORITE: {
  			// Remove the files from favorites.
  			Vector<String> favorites = EditorSettings::get_singleton()->get_favorites();
  			for (int i = 0; i < p_selected.size(); i++) {
  				favorites.erase(p_selected[i]);
  			}
  			EditorSettings::get_singleton()->set_favorites(favorites);
  			_update_tree(_compute_uncollapsed_paths());
  			if (path == "Favorites")
  				_update_file_list(true);
  		} break;
  
  		case FILE_DEPENDENCIES: {
  			// Checkout the file dependencies.
  			if (!p_selected.empty()) {
  				String fpath = p_selected[0];
  				deps_editor->edit(fpath);
  			}
  		} break;
  
  		case FILE_OWNERS: {
  			// Checkout the file owners.
  			if (!p_selected.empty()) {
  				String fpath = p_selected[0];
  				owners_editor->show(fpath);
  			}
  		} break;
  
  		case FILE_MOVE: {
  			// Move the files to a given location.
  			to_move.clear();
  			Vector<String> collapsed_paths = _remove_self_included_paths(p_selected);
  			for (int i = collapsed_paths.size() - 1; i >= 0; i--) {
  				String fpath = collapsed_paths[i];
  				if (fpath != "res://") {
  					to_move.push_back(FileOrFolder(fpath, !fpath.ends_with("/")));
  				}
  			}
  			if (to_move.size() > 0) {
  				move_dialog->popup_centered_ratio();
  			}
  		} break;
  
  		case FILE_RENAME: {
  			// Rename the active file.
  			if (!p_selected.empty()) {
  				to_rename.path = p_selected[0];
  				if (to_rename.path != "res://") {
  					to_rename.is_file = !to_rename.path.ends_with("/");
  					if (to_rename.is_file) {
  						String name = to_rename.path.get_file();
  						rename_dialog->set_title(TTR("Renaming file:") + " " + name);
  						rename_dialog_text->set_text(name);
  						rename_dialog_text->select(0, name.find_last("."));
  					} else {
  						String name = to_rename.path.substr(0, to_rename.path.length() - 1).get_file();
  						rename_dialog->set_title(TTR("Renaming folder:") + " " + name);
  						rename_dialog_text->set_text(name);
  						rename_dialog_text->select(0, name.length());
  					}
  					rename_dialog->popup_centered_minsize(Size2(250, 80) * EDSCALE);
  					rename_dialog_text->grab_focus();
  				}
  			}
  		} break;
  
  		case FILE_REMOVE: {
  			// Remove the selected files.
  			Vector<String> remove_files;
  			Vector<String> remove_folders;
  			Vector<String> collapsed_paths = _remove_self_included_paths(p_selected);
  
  			for (int i = 0; i < collapsed_paths.size(); i++) {
  				String fpath = collapsed_paths[i];
  				if (fpath != "res://") {
  					if (fpath.ends_with("/")) {
  						remove_folders.push_back(fpath);
  					} else {
  						remove_files.push_back(fpath);
  					}
  				}
  			}
  
  			if (remove_files.size() + remove_folders.size() > 0) {
  				remove_dialog->show(remove_folders, remove_files);
  			}
  		} break;
  
  		case FILE_DUPLICATE: {
  			// Duplicate the selected files.
  			for (int i = 0; i < p_selected.size(); i++) {
  				to_duplicate.path = p_selected[i];
  				to_duplicate.is_file = !to_duplicate.path.ends_with("/");
  				if (to_duplicate.is_file) {
  					String name = to_duplicate.path.get_file();
  					duplicate_dialog->set_title(TTR("Duplicating file:") + " " + name);
  					duplicate_dialog_text->set_text(name);
  					duplicate_dialog_text->select(0, name.find_last("."));
  				} else {
  					String name = to_duplicate.path.substr(0, to_duplicate.path.length() - 1).get_file();
  					duplicate_dialog->set_title(TTR("Duplicating folder:") + " " + name);
  					duplicate_dialog_text->set_text(name);
  					duplicate_dialog_text->select(0, name.length());
  				}
  				duplicate_dialog->popup_centered_minsize(Size2(250, 80) * EDSCALE);
  				duplicate_dialog_text->grab_focus();
  			}
  		} break;
  
  		case FILE_INFO: {
  
  		} break;
  
  		case FILE_REIMPORT: {
  			// Reimport all selected files.
  			Vector<String> reimport;
  			for (int i = 0; i < p_selected.size(); i++) {
  				reimport.push_back(p_selected[i]);
  			}
  
  			ERR_FAIL_COND_MSG(reimport.size() == 0, "You need to select files to reimport them.");
  		} break;
  
  		case FILE_NEW_FOLDER: {
  			make_dir_dialog_text->set_text("new folder");
  			make_dir_dialog_text->select_all();
  			make_dir_dialog->popup_centered_minsize(Size2(250, 80) * EDSCALE);
  			make_dir_dialog_text->grab_focus();
  		} break;
  
  		case FILE_NEW_SCENE: {
  			make_scene_dialog_text->set_text("new scene");
  			make_scene_dialog_text->select_all();
  			make_scene_dialog->popup_centered_minsize(Size2(250, 80) * EDSCALE);
  			make_scene_dialog_text->grab_focus();
  		} break;
  
  		case FILE_NEW_SCRIPT: {
  			String fpath = path;
  			if (!fpath.ends_with("/")) {
  				fpath = fpath.get_base_dir();
  			}
  			make_script_dialog_text->config("Node", fpath.plus_file("new_script.gd"), false);
  			make_script_dialog_text->popup_centered(Size2(300, 300) * EDSCALE);
  		} break;
  
  		case FILE_COPY_PATH: {
  			if (!p_selected.empty()) {
  				String fpath = p_selected[0];
  				OS::get_singleton()->set_clipboard(fpath);
  			}
  		} break;
  
  		case FILE_NEW_RESOURCE: {
  			new_resource_dialog->popup_create(true);
  		} break;
  	}
  }
  
  void FileSystemDock::_resource_created() const {
  	Object *c = new_resource_dialog->instance_selected();
  
  	ERR_FAIL_COND(!c);
  	Resource *r = Object::cast_to<Resource>(c);
  	ERR_FAIL_COND(!r);
  
  	REF res(r);
  	editor->push_item(c);
  
  	RES current_res = RES(r);
  
  	String fpath = path;
  	if (!fpath.ends_with("/")) {
  		fpath = fpath.get_base_dir();
  	}
  
  	editor->save_resource_as(current_res, fpath);
  }
  
  void FileSystemDock::_search_changed(const String &p_text, const Control *p_from) {
  	if (searched_string.length() == 0 && p_text.length() > 0) {
  		// Register the uncollapsed paths before they change.
  		uncollapsed_paths_before_search = _compute_uncollapsed_paths();
  	}
  
  	searched_string = p_text.to_lower();
  
  	if (p_from == tree_search_box)
  		file_list_search_box->set_text(searched_string);
  	else // File_list_search_box.
  		tree_search_box->set_text(searched_string);
  
  	switch (display_mode) {
  		case DISPLAY_MODE_TREE_ONLY: {
  			_update_tree(searched_string.length() == 0 ? uncollapsed_paths_before_search : Vector<String>());
  		} break;
  		case DISPLAY_MODE_SPLIT: {
  			_update_file_list(false);
  			_update_tree(searched_string.length() == 0 ? uncollapsed_paths_before_search : Vector<String>());
  		} break;
  	}
  }
  
  void FileSystemDock::_rescan() {
  	_set_scanning_mode();
  	EditorFileSystem::get_singleton()->scan();
  }
  
  void FileSystemDock::_toggle_split_mode(bool p_active) {
  	set_display_mode(p_active ? DISPLAY_MODE_SPLIT : DISPLAY_MODE_TREE_ONLY);
  	emit_signal("display_mode_changed");
  }
  
  void FileSystemDock::fix_dependencies(const String &p_for_file) {
  	deps_editor->edit(p_for_file);
  }
  
  void FileSystemDock::focus_on_filter() {
  	file_list_search_box->grab_focus();
  }
  
  void FileSystemDock::set_file_list_display_mode(FileListDisplayMode p_mode) {
  	if (p_mode == file_list_display_mode)
  		return;
  
  	_toggle_file_display();
  }
  
  Variant FileSystemDock::get_drag_data_fw(const Point2 &p_point, Control *p_from) {
  	bool all_favorites = true;
  	bool all_not_favorites = true;
  
  	Vector<String> paths;
  
  	if (p_from == tree) {
  		// Check if the first selected is in favorite.
  		TreeItem *selected = tree->get_next_selected(tree->get_root());
  		while (selected) {
  			TreeItem *favorites_item = tree->get_root()->get_children();
  			if (selected == favorites_item) {
  				// The "Favorites" item is not draggable.
  				return Variant();
  			}
  
  			bool is_favorite = selected->get_parent() != NULL && tree->get_root()->get_children() == selected->get_parent();
  			all_favorites &= is_favorite;
  			all_not_favorites &= !is_favorite;
  			selected = tree->get_next_selected(selected);
  		}
  		if (!all_not_favorites) {
  			paths = _tree_get_selected(false);
  		} else {
  			paths = _tree_get_selected();
  		}
  	} else if (p_from == files) {
  		for (int i = 0; i < files->get_item_count(); i++) {
  			if (files->is_selected(i)) {
  				paths.push_back(files->get_item_metadata(i));
  			}
  		}
  		all_favorites = false;
  		all_not_favorites = true;
  	}
  
  	if (paths.empty())
  		return Variant();
  
  	Dictionary drag_data = EditorNode::get_singleton()->drag_files_and_dirs(paths, p_from);
  	if (!all_not_favorites) {
  		drag_data["favorite"] = all_favorites ? "all" : "mixed";
  	}
  	return drag_data;
  }
  
  bool FileSystemDock::can_drop_data_fw(const Point2 &p_point, const Variant &p_data, Control *p_from) const {
  	Dictionary drag_data = p_data;
  
  	if (drag_data.has("favorite")) {
  
  		if (String(drag_data["favorite"]) != "all") {
  			return false;
  		}
  
  		// Moving favorite around.
  		TreeItem *ti = tree->get_item_at_position(p_point);
  		if (!ti)
  			return false;
  
  		int drop_section = tree->get_drop_section_at_position(p_point);
  		TreeItem *favorites_item = tree->get_root()->get_children();
  
  		TreeItem *resources_item = favorites_item->get_next();
  
  		if (ti == favorites_item) {
  			return (drop_section == 1); // The parent, first fav.
  		}
  		if (ti->get_parent() && favorites_item == ti->get_parent()) {
  			return true; // A favorite
  		}
  		if (ti == resources_item) {
  			return (drop_section == -1); // The tree, last fav.
  		}
  
  		return false;
  	}
  
  	if (drag_data.has("type") && String(drag_data["type"]) == "resource") {
  		// Move resources.
  		String to_dir;
  		bool favorite;
  		_get_drag_target_folder(to_dir, favorite, p_point, p_from);
  		return !to_dir.empty();
  	}
  
  	if (drag_data.has("type") && (String(drag_data["type"]) == "files" || String(drag_data["type"]) == "files_and_dirs")) {
  		// Move files or dir.
  		String to_dir;
  		bool favorite;
  		_get_drag_target_folder(to_dir, favorite, p_point, p_from);
  
  		if (favorite)
  			return true;
  
  		if (to_dir.empty())
  			return false;
  
  		// Attempting to move a folder into itself will fail later,
  		// rather than bring up a message don't try to do it in the first place
  		to_dir = to_dir.ends_with("/") ? to_dir : (to_dir + "/");
  		Vector<String> fnames = drag_data["files"];
  		for (int i = 0; i < fnames.size(); ++i) {
  			if (fnames[i].ends_with("/") && to_dir.begins_with(fnames[i]))
  				return false;
  		}
  
  		return true;
  	}
  
  	return false;
  }
  
  void FileSystemDock::drop_data_fw(const Point2 &p_point, const Variant &p_data, Control *p_from) {
  	if (!can_drop_data_fw(p_point, p_data, p_from))
  		return;
  	Dictionary drag_data = p_data;
  
  	Vector<String> dirs = EditorSettings::get_singleton()->get_favorites();
  
  	if (drag_data.has("favorite")) {
  
  		if (String(drag_data["favorite"]) != "all") {
  			return;
  		}
  		// Moving favorite around.
  		TreeItem *ti = tree->get_item_at_position(p_point);
  		if (!ti)
  			return;
  		int drop_section = tree->get_drop_section_at_position(p_point);
  
  		int drop_position;
  		Vector<String> files = drag_data["files"];
  		TreeItem *favorites_item = tree->get_root()->get_children();
  		TreeItem *resources_item = favorites_item->get_next();
  
  		if (ti == favorites_item) {
  			// Drop on the favorite folder.
  			drop_position = 0;
  		} else if (ti == resources_item) {
  			// Drop on the resource item.
  			drop_position = dirs.size();
  		} else {
  			// Drop in the list.
  			drop_position = dirs.find(ti->get_metadata(0));
  			if (drop_section == 1) {
  				drop_position++;
  			}
  		}
  
  		// Remove dragged favorites.
  		Vector<int> to_remove;
  		int offset = 0;
  		for (int i = 0; i < files.size(); i++) {
  			int to_remove_pos = dirs.find(files[i]);
  			to_remove.push_back(to_remove_pos);
  			if (to_remove_pos < drop_position) {
  				offset++;
  			}
  		}
  		drop_position -= offset;
  		to_remove.sort();
  		for (int i = 0; i < to_remove.size(); i++) {
  			dirs.remove(to_remove[i] - i);
  		}
  
  		// Re-add them at the right position.
  		for (int i = 0; i < files.size(); i++) {
  			dirs.insert(drop_position, files[i]);
  			drop_position++;
  		}
  
  		EditorSettings::get_singleton()->set_favorites(dirs);
  		_update_tree(_compute_uncollapsed_paths());
  
  		if (display_mode == DISPLAY_MODE_SPLIT && path == "Favorites")
  			_update_file_list(true);
  		return;
  	}
  
  	if (drag_data.has("type") && String(drag_data["type"]) == "resource") {
  		// Moving resource.
  		Ref<Resource> res = drag_data["resource"];
  		String to_dir;
  		bool favorite;
  		_get_drag_target_folder(to_dir, favorite, p_point, p_from);
  		if (res.is_valid() && !to_dir.empty()) {
  			EditorNode::get_singleton()->push_item(res.ptr());
  			EditorNode::get_singleton()->save_resource_as(res, to_dir);
  		}
  	}
  
  	if (drag_data.has("type") && (String(drag_data["type"]) == "files" || String(drag_data["type"]) == "files_and_dirs")) {
  		// Move files or add to favorites.
  		String to_dir;
  		bool favorite;
  		_get_drag_target_folder(to_dir, favorite, p_point, p_from);
  		if (!to_dir.empty()) {
  			Vector<String> fnames = drag_data["files"];
  			to_move.clear();
  			for (int i = 0; i < fnames.size(); i++) {
  				to_move.push_back(FileOrFolder(fnames[i], !fnames[i].ends_with("/")));
  			}
  			_move_operation_confirm(to_dir);
  		} else if (favorite) {
  			// Add the files from favorites
  			Vector<String> fnames = drag_data["files"];
  			Vector<String> favorites = EditorSettings::get_singleton()->get_favorites();
  			for (int i = 0; i < fnames.size(); i++) {
  				if (favorites.find(fnames[i]) == -1) {
  					favorites.push_back(fnames[i]);
  				}
  			}
  			EditorSettings::get_singleton()->set_favorites(favorites);
  			_update_tree(_compute_uncollapsed_paths());
  		}
  	}
  }
  
  void FileSystemDock::_get_drag_target_folder(String &target, bool &target_favorites, const Point2 &p_point, Control *p_from) const {
  	target = String();
  	target_favorites = false;
  
  	// In the file list.
  	if (p_from == files) {
  		int pos = files->get_item_at_position(p_point, true);
  		if (pos == -1) {
  			return;
  		}
  
  		String ltarget = files->get_item_metadata(pos);
  		target = ltarget.ends_with("/") ? ltarget : path.get_base_dir();
  		return;
  	}
  
  	// In the tree.
  	if (p_from == tree) {
  		TreeItem *ti = tree->get_item_at_position(p_point);
  		int section = tree->get_drop_section_at_position(p_point);
  		if (ti) {
  			// Check the favorites first.
  			if (ti == tree->get_root()->get_children() && section >= 0) {
  				target_favorites = true;
  				return;
  			} else if (ti->get_parent() == tree->get_root()->get_children()) {
  				target_favorites = true;
  				return;
  			} else {
  				String fpath = ti->get_metadata(0);
  				if (section == 0) {
  					if (fpath.ends_with("/")) {
  						// We drop on a folder.
  						target = fpath;
  						return;
  					}
  				} else {
  					if (ti->get_parent() != tree->get_root()->get_children()) {
  						// Not in the favorite section.
  						if (fpath != "res://") {
  							// We drop between two files
  							if (fpath.ends_with("/")) {
  								fpath = fpath.substr(0, fpath.length() - 1);
  							}
  							target = fpath.get_base_dir();
  							return;
  						}
  					}
  				}
  			}
  		}
  	}
  }
  
  void FileSystemDock::_file_and_folders_fill_popup(PopupMenu *p_popup, Vector<String> p_paths, bool p_display_path_dependent_options) {
  	// Add options for files and folders.
  	ERR_FAIL_COND_MSG(p_paths.empty(), "Path cannot be empty.");
  
  	Vector<String> filenames;
  	Vector<String> foldernames;
  
  	Vector<String> favorites = EditorSettings::get_singleton()->get_favorites();
  
  	bool all_files = true;
  	bool all_files_scenes = true;
  	bool all_folders = true;
  	bool all_favorites = true;
  	bool all_not_favorites = true;
  
  	for (int i = 0; i < p_paths.size(); i++) {
  		String fpath = p_paths[i];
  		if (fpath.ends_with("/")) {
  			foldernames.push_back(fpath);
  			all_files = false;
  		} else {
  			filenames.push_back(fpath);
  			all_folders = false;
  			all_files_scenes &= (EditorFileSystem::get_singleton()->get_file_type(fpath) == "PackedScene");
  		}
  
  		// Check if in favorites.
  		bool found = false;
  		for (int j = 0; j < favorites.size(); j++) {
  			if (favorites[j] == fpath) {
  				found = true;
  				break;
  			}
  		}
  		if (found) {
  			all_not_favorites = false;
  		} else {
  			all_favorites = false;
  		}
  	}
  
  	if (all_files) {
  		if (all_files_scenes) {
  			if (filenames.size() == 1) {
  				p_popup->add_icon_item(get_icon("Load", "EditorIcons"), TTR("Open Scene"), FILE_OPEN);
  				p_popup->add_icon_item(get_icon("CreateNewSceneFrom", "EditorIcons"), TTR("New Inherited Scene"), FILE_INHERIT);
  			} else {
  				p_popup->add_icon_item(get_icon("Load", "EditorIcons"), TTR("Open Scenes"), FILE_OPEN);
  			}
  			p_popup->add_icon_item(get_icon("Instance", "EditorIcons"), TTR("Instance"), FILE_INSTANCE);
  			p_popup->add_separator();
  		} else if (filenames.size() == 1) {
  			p_popup->add_icon_item(get_icon("Load", "EditorIcons"), TTR("Open"), FILE_OPEN);
  			p_popup->add_separator();
  		}
  	}
  
  	if (p_paths.size() >= 1) {
  		if (!all_favorites) {
  			p_popup->add_icon_item(get_icon("Favorites", "EditorIcons"), TTR("Add to Favorites"), FILE_ADD_FAVORITE);
  		}
  		if (!all_not_favorites) {
  			p_popup->add_icon_item(get_icon("NonFavorite", "EditorIcons"), TTR("Remove from Favorites"), FILE_REMOVE_FAVORITE);
  		}
  		p_popup->add_separator();
  	}
  
  	if (all_files) {
  		if (filenames.size() == 1) {
  			p_popup->add_item(TTR("Edit Dependencies..."), FILE_DEPENDENCIES);
  			p_popup->add_item(TTR("View Owners..."), FILE_OWNERS);
  			p_popup->add_separator();
  		}
  
  	} else if (all_folders && foldernames.size() > 0) {
  		p_popup->add_icon_item(get_icon("Load", "EditorIcons"), TTR("Open"), FILE_OPEN);
  		p_popup->add_separator();
  	}
  
  	if (p_paths.size() == 1) {
  		p_popup->add_icon_item(get_icon("ActionCopy", "EditorIcons"), TTR("Copy Path"), FILE_COPY_PATH);
  		if (p_paths[0] != "res://") {
  			p_popup->add_icon_item(get_icon("Rename", "EditorIcons"), TTR("Rename..."), FILE_RENAME);
  			p_popup->add_icon_item(get_icon("Duplicate", "EditorIcons"), TTR("Duplicate..."), FILE_DUPLICATE);
  		}
  	}
  
  	if (p_paths.size() > 1 || p_paths[0] != "res://") {
  		p_popup->add_icon_item(get_icon("MoveUp", "EditorIcons"), TTR("Move To..."), FILE_MOVE);
  		p_popup->add_icon_item(get_icon("Remove", "EditorIcons"), TTR("Delete"), FILE_REMOVE);
  	}
  
  	if (p_paths.size() == 1) {
  		p_popup->add_separator();
  		if (p_display_path_dependent_options) {
  			p_popup->add_icon_item(get_icon("Folder", "EditorIcons"), TTR("New Folder..."), FILE_NEW_FOLDER);
  			p_popup->add_icon_item(get_icon("PackedScene", "EditorIcons"), TTR("New Scene..."), FILE_NEW_SCENE);
  			p_popup->add_icon_item(get_icon("Script", "EditorIcons"), TTR("New Script..."), FILE_NEW_SCRIPT);
  			p_popup->add_icon_item(get_icon("Object", "EditorIcons"), TTR("New Resource..."), FILE_NEW_RESOURCE);
  			p_popup->add_separator();
  		}
  
  		String fpath = p_paths[0];
  		String item_text = fpath.ends_with("/") ? TTR("Open in File Manager") : TTR("Show in File Manager");
  		p_popup->add_icon_item(get_icon("Filesystem", "EditorIcons"), item_text, FILE_SHOW_IN_EXPLORER);
  	}
  }
  
  void FileSystemDock::_tree_rmb_select(const Vector2 &p_pos) {
  	// Right click is pressed in the tree.
  	Vector<String> paths = _tree_get_selected(false);
  
  	if (paths.size() == 1) {
  		if (paths[0].ends_with("/")) {
  			tree_popup->add_icon_item(get_icon("GuiTreeArrowDown", "EditorIcons"), TTR("Expand All"), FOLDER_EXPAND_ALL);
  			tree_popup->add_icon_item(get_icon("GuiTreeArrowRight", "EditorIcons"), TTR("Collapse All"), FOLDER_COLLAPSE_ALL);
  			tree_popup->add_separator();
  		}
  	}
  
  	// Popup.
  	if (!paths.empty()) {
  		tree_popup->clear();
  		tree_popup->set_size(Size2(1, 1));
  		_file_and_folders_fill_popup(tree_popup, paths);
  		tree_popup->set_position(tree->get_global_position() + p_pos);
  		tree_popup->popup();
  	}
  }
  
  void FileSystemDock::_tree_rmb_empty(const Vector2 &p_pos) {
  	// Right click is pressed in the empty space of the tree.
  	path = "res://";
  	tree_popup->clear();
  	tree_popup->set_size(Size2(1, 1));
  	tree_popup->add_icon_item(get_icon("Folder", "EditorIcons"), TTR("New Folder..."), FILE_NEW_FOLDER);
  	tree_popup->add_icon_item(get_icon("PackedScene", "EditorIcons"), TTR("New Scene..."), FILE_NEW_SCENE);
  	tree_popup->add_icon_item(get_icon("Script", "EditorIcons"), TTR("New Script..."), FILE_NEW_SCRIPT);
  	tree_popup->add_icon_item(get_icon("Object", "EditorIcons"), TTR("New Resource..."), FILE_NEW_RESOURCE);
  	tree_popup->set_position(tree->get_global_position() + p_pos);
  	tree_popup->popup();
  }
  
  void FileSystemDock::_tree_empty_selected() {
  	tree->deselect_all();
  }
  
  void FileSystemDock::_file_list_rmb_select(int p_item, const Vector2 &p_pos) {
  	// Right click is pressed in the file list.
  	Vector<String> paths;
  	for (int i = 0; i < files->get_item_count(); i++) {
  		if (!files->is_selected(i))
  			continue;
  		if (files->get_item_text(p_item) == "..") {
  			files->unselect(i);
  			continue;
  		}
  		paths.push_back(files->get_item_metadata(i));
  	}
  
  	// Popup.
  	if (!paths.empty()) {
  		file_list_popup->clear();
  		file_list_popup->set_size(Size2(1, 1));
  		_file_and_folders_fill_popup(file_list_popup, paths, searched_string.length() == 0);
  		file_list_popup->set_position(files->get_global_position() + p_pos);
  		file_list_popup->popup();
  	}
  }
  
  void FileSystemDock::_file_list_rmb_pressed(const Vector2 &p_pos) {
  	// Right click on empty space for file list.
  	if (searched_string.length() > 0)
  		return;
  
  	file_list_popup->clear();
  	file_list_popup->set_size(Size2(1, 1));
  
  	file_list_popup->add_icon_item(get_icon("Folder", "EditorIcons"), TTR("New Folder..."), FILE_NEW_FOLDER);
  	file_list_popup->add_icon_item(get_icon("PackedScene", "EditorIcons"), TTR("New Scene..."), FILE_NEW_SCENE);
  	file_list_popup->add_icon_item(get_icon("Script", "EditorIcons"), TTR("New Script..."), FILE_NEW_SCRIPT);
  	file_list_popup->add_icon_item(get_icon("Object", "EditorIcons"), TTR("New Resource..."), FILE_NEW_RESOURCE);
  	file_list_popup->add_separator();
  	file_list_popup->add_icon_item(get_icon("Filesystem", "EditorIcons"), TTR("Open in File Manager"), FILE_SHOW_IN_EXPLORER);
  	file_list_popup->set_position(files->get_global_position() + p_pos);
  	file_list_popup->popup();
  }
  
  void FileSystemDock::select_file(const String &p_file) {
  	_navigate_to_path(p_file);
  }
  
  void FileSystemDock::_file_multi_selected(int p_index, bool p_selected) {
  	// Set the path to the current focused item.
  	int current = files->get_current();
  	if (current == p_index) {
  		String fpath = files->get_item_metadata(current);
  		if (!fpath.ends_with("/")) {
  			path = fpath;
  			if (display_mode == DISPLAY_MODE_SPLIT) {
  				_update_tree(_compute_uncollapsed_paths());
  			}
  		}
  	}
  
  	// Update the import dock.
  	import_dock_needs_update = true;
  	call_deferred("_update_import_dock");
  }
  
  void FileSystemDock::_tree_gui_input(Ref<InputEvent> p_event) {
  	if (get_viewport()->get_modal_stack_top())
  		return; // Ignore because of modal window.
  
  	Ref<InputEventKey> key = p_event;
  	if (key.is_valid() && key->is_pressed() && !key->is_echo()) {
  		if (ED_IS_SHORTCUT("filesystem_dock/duplicate", p_event)) {
  			_tree_rmb_option(FILE_DUPLICATE);
  		} else if (ED_IS_SHORTCUT("filesystem_dock/copy_path", p_event)) {
  			_tree_rmb_option(FILE_COPY_PATH);
  		} else if (ED_IS_SHORTCUT("filesystem_dock/delete", p_event)) {
  			_tree_rmb_option(FILE_REMOVE);
  		} else if (ED_IS_SHORTCUT("filesystem_dock/rename", p_event)) {
  			_tree_rmb_option(FILE_RENAME);
  		}
  	}
  }
  
  void FileSystemDock::_file_list_gui_input(Ref<InputEvent> p_event) {
  	if (get_viewport()->get_modal_stack_top())
  		return; // Ignore because of modal window.
  
  	Ref<InputEventKey> key = p_event;
  	if (key.is_valid() && key->is_pressed() && !key->is_echo()) {
  		if (ED_IS_SHORTCUT("filesystem_dock/duplicate", p_event)) {
  			_file_list_rmb_option(FILE_DUPLICATE);
  		} else if (ED_IS_SHORTCUT("filesystem_dock/copy_path", p_event)) {
  			_file_list_rmb_option(FILE_COPY_PATH);
  		} else if (ED_IS_SHORTCUT("filesystem_dock/delete", p_event)) {
  			_file_list_rmb_option(FILE_REMOVE);
  		} else if (ED_IS_SHORTCUT("filesystem_dock/rename", p_event)) {
  			_file_list_rmb_option(FILE_RENAME);
  		}
  	}
  }
  
  void FileSystemDock::_update_import_dock() {
  	if (!import_dock_needs_update)
  		return;
  
  	// List selected.
  	Vector<String> selected;
  	if (display_mode == DISPLAY_MODE_TREE_ONLY) {
  		// Use the tree
  		selected = _tree_get_selected();
  
  	} else {
  		// Use the file list.
  		for (int i = 0; i < files->get_item_count(); i++) {
  			if (!files->is_selected(i))
  				continue;
  
  			selected.push_back(files->get_item_metadata(i));
  		}
  	}
  
  	// Check import.
  	Vector<String> imports;
  	String import_type;
  	for (int i = 0; i < selected.size(); i++) {
  		String fpath = selected[i];
  
  		if (fpath.ends_with("/")) {
  			imports.clear();
  			break;
  		}
  
  		if (!FileAccess::exists(fpath + ".import")) {
  			imports.clear();
  			break;
  		}
  		Ref<ConfigFile> cf;
  		cf.instance();
  		Error err = cf->load(fpath + ".import");
  		if (err != OK) {
  			imports.clear();
  			break;
  		}
  
  		String type = cf->get_value("remap", "type");
  		if (import_type == "") {
  			import_type = type;
  		} else if (import_type != type) {
  			// All should be the same type.
  			imports.clear();
  			break;
  		}
  		imports.push_back(fpath);
  	}
  
  	if (imports.size() == 0) {
  		EditorNode::get_singleton()->get_import_dock()->clear();
  	} else if (imports.size() == 1) {
  		EditorNode::get_singleton()->get_import_dock()->set_edit_path(imports[0]);
  	} else {
  		EditorNode::get_singleton()->get_import_dock()->set_edit_multiple_paths(imports);
  	}
  
  	import_dock_needs_update = false;
  }
  
  void FileSystemDock::_feature_profile_changed() {
  	_update_display_mode(true);
  }
  
  void FileSystemDock::_bind_methods() {
  	ClassDB::bind_method(D_METHOD("_file_list_gui_input"), &FileSystemDock::_file_list_gui_input);
  	ClassDB::bind_method(D_METHOD("_tree_gui_input"), &FileSystemDock::_tree_gui_input);
  
  	ClassDB::bind_method(D_METHOD("_update_tree"), &FileSystemDock::_update_tree);
  	ClassDB::bind_method(D_METHOD("_rescan"), &FileSystemDock::_rescan);
  
  	ClassDB::bind_method(D_METHOD("_toggle_split_mode"), &FileSystemDock::_toggle_split_mode);
  
  	ClassDB::bind_method(D_METHOD("_tree_rmb_option", "option"), &FileSystemDock::_tree_rmb_option);
  	ClassDB::bind_method(D_METHOD("_tree_rmb_select"), &FileSystemDock::_tree_rmb_select);
  	ClassDB::bind_method(D_METHOD("_tree_empty_selected"), &FileSystemDock::_tree_empty_selected);
  
  	ClassDB::bind_method(D_METHOD("_file_list_rmb_option", "option"), &FileSystemDock::_file_list_rmb_option);
  	ClassDB::bind_method(D_METHOD("_file_list_rmb_select"), &FileSystemDock::_file_list_rmb_select);
  	ClassDB::bind_method(D_METHOD("_file_list_rmb_pressed"), &FileSystemDock::_file_list_rmb_pressed);
  	ClassDB::bind_method(D_METHOD("_tree_rmb_empty"), &FileSystemDock::_tree_rmb_empty);
  
  	ClassDB::bind_method(D_METHOD("_file_deleted"), &FileSystemDock::_file_deleted);
  	ClassDB::bind_method(D_METHOD("_folder_deleted"), &FileSystemDock::_folder_deleted);
  
  	ClassDB::bind_method(D_METHOD("_file_list_thumbnail_done"), &FileSystemDock::_file_list_thumbnail_done);
  	ClassDB::bind_method(D_METHOD("_tree_thumbnail_done"), &FileSystemDock::_tree_thumbnail_done);
  	ClassDB::bind_method(D_METHOD("_file_list_activate_file"), &FileSystemDock::_file_list_activate_file);
  	ClassDB::bind_method(D_METHOD("_tree_activate_file"), &FileSystemDock::_tree_activate_file);
  	ClassDB::bind_method(D_METHOD("_select_file"), &FileSystemDock::_select_file);
  	ClassDB::bind_method(D_METHOD("_navigate_to_path"), &FileSystemDock::_navigate_to_path, DEFVAL(false));
  	ClassDB::bind_method(D_METHOD("_toggle_file_display"), &FileSystemDock::_toggle_file_display);
  	ClassDB::bind_method(D_METHOD("_fw_history"), &FileSystemDock::_fw_history);
  	ClassDB::bind_method(D_METHOD("_bw_history"), &FileSystemDock::_bw_history);
  	ClassDB::bind_method(D_METHOD("_fs_changed"), &FileSystemDock::_fs_changed);
  	ClassDB::bind_method(D_METHOD("_tree_multi_selected"), &FileSystemDock::_tree_multi_selected);
  	ClassDB::bind_method(D_METHOD("_make_dir_confirm"), &FileSystemDock::_make_dir_confirm);
  	ClassDB::bind_method(D_METHOD("_make_scene_confirm"), &FileSystemDock::_make_scene_confirm);
  	ClassDB::bind_method(D_METHOD("_resource_created"), &FileSystemDock::_resource_created);
  	ClassDB::bind_method(D_METHOD("_move_operation_confirm", "to_path", "overwrite"), &FileSystemDock::_move_operation_confirm, DEFVAL(false));
  	ClassDB::bind_method(D_METHOD("_move_with_overwrite"), &FileSystemDock::_move_with_overwrite);
  	ClassDB::bind_method(D_METHOD("_rename_operation_confirm"), &FileSystemDock::_rename_operation_confirm);
  	ClassDB::bind_method(D_METHOD("_duplicate_operation_confirm"), &FileSystemDock::_duplicate_operation_confirm);
  
  	ClassDB::bind_method(D_METHOD("_search_changed"), &FileSystemDock::_search_changed);
  
  	ClassDB::bind_method(D_METHOD("get_drag_data_fw"), &FileSystemDock::get_drag_data_fw);
  	ClassDB::bind_method(D_METHOD("can_drop_data_fw"), &FileSystemDock::can_drop_data_fw);
  	ClassDB::bind_method(D_METHOD("drop_data_fw"), &FileSystemDock::drop_data_fw);
  	ClassDB::bind_method(D_METHOD("navigate_to_path"), &FileSystemDock::navigate_to_path);
  
  	ClassDB::bind_method(D_METHOD("_preview_invalidated"), &FileSystemDock::_preview_invalidated);
  	ClassDB::bind_method(D_METHOD("_file_multi_selected"), &FileSystemDock::_file_multi_selected);
  	ClassDB::bind_method(D_METHOD("_update_import_dock"), &FileSystemDock::_update_import_dock);
  
  	ClassDB::bind_method(D_METHOD("_feature_profile_changed"), &FileSystemDock::_feature_profile_changed);
  
  	ADD_SIGNAL(MethodInfo("inherit", PropertyInfo(Variant::STRING, "file")));
  	ADD_SIGNAL(MethodInfo("instance", PropertyInfo(Variant::POOL_STRING_ARRAY, "files")));
  
  	ADD_SIGNAL(MethodInfo("file_removed", PropertyInfo(Variant::STRING, "file")));
  	ADD_SIGNAL(MethodInfo("folder_removed", PropertyInfo(Variant::STRING, "folder")));
  	ADD_SIGNAL(MethodInfo("files_moved", PropertyInfo(Variant::STRING, "old_file"), PropertyInfo(Variant::STRING, "new_file")));
  	ADD_SIGNAL(MethodInfo("folder_moved", PropertyInfo(Variant::STRING, "old_folder"), PropertyInfo(Variant::STRING, "new_file")));
  
  	ADD_SIGNAL(MethodInfo("display_mode_changed"));
  }
  
  FileSystemDock::FileSystemDock(EditorNode *p_editor) {
  	set_name("FileSystem");
  	editor = p_editor;
  	path = "res://";
  
  	ED_SHORTCUT("filesystem_dock/copy_path", TTR("Copy Path"), KEY_MASK_CMD | KEY_C);
  	ED_SHORTCUT("filesystem_dock/duplicate", TTR("Duplicate..."), KEY_MASK_CMD | KEY_D);
  	ED_SHORTCUT("filesystem_dock/delete", TTR("Delete"), KEY_DELETE);
  	ED_SHORTCUT("filesystem_dock/rename", TTR("Rename"));
  
  	VBoxContainer *top_vbc = memnew(VBoxContainer);
  	add_child(top_vbc);
  
  	HBoxContainer *toolbar_hbc = memnew(HBoxContainer);
  	toolbar_hbc->add_constant_override("separation", 0);
  	top_vbc->add_child(toolbar_hbc);
  
  	button_hist_prev = memnew(ToolButton);
  	button_hist_prev->set_disabled(true);
  	button_hist_prev->set_focus_mode(FOCUS_NONE);
  	button_hist_prev->set_tooltip(TTR("Previous Folder/File"));
  	toolbar_hbc->add_child(button_hist_prev);
  
  	button_hist_next = memnew(ToolButton);
  	button_hist_next->set_disabled(true);
  	button_hist_next->set_focus_mode(FOCUS_NONE);
  	button_hist_next->set_tooltip(TTR("Next Folder/File"));
  	toolbar_hbc->add_child(button_hist_next);
  
  	current_path = memnew(LineEdit);
  	current_path->set_h_size_flags(SIZE_EXPAND_FILL);
  	_set_current_path_text(path);
  	toolbar_hbc->add_child(current_path);
  
  	button_reload = memnew(Button);
  	button_reload->set_flat(true);
  	button_reload->connect("pressed", this, "_rescan");
  	button_reload->set_focus_mode(FOCUS_NONE);
  	button_reload->set_tooltip(TTR("Re-Scan Filesystem"));
  	button_reload->hide();
  	toolbar_hbc->add_child(button_reload);
  
  	button_toggle_display_mode = memnew(Button);
  	button_toggle_display_mode->set_flat(true);
  	button_toggle_display_mode->set_toggle_mode(true);
  	button_toggle_display_mode->connect("toggled", this, "_toggle_split_mode");
  	button_toggle_display_mode->set_focus_mode(FOCUS_NONE);
  	button_toggle_display_mode->set_tooltip(TTR("Toggle Split Mode"));
  	toolbar_hbc->add_child(button_toggle_display_mode);
  
  	HBoxContainer *toolbar2_hbc = memnew(HBoxContainer);
  	toolbar2_hbc->add_constant_override("separation", 0);
  	top_vbc->add_child(toolbar2_hbc);
  
  	tree_search_box = memnew(LineEdit);
  	tree_search_box->set_h_size_flags(SIZE_EXPAND_FILL);
  	tree_search_box->set_placeholder(TTR("Search files"));
  	tree_search_box->connect("text_changed", this, "_search_changed", varray(tree_search_box));
  	toolbar2_hbc->add_child(tree_search_box);
  
  	file_list_popup = memnew(PopupMenu);
  	file_list_popup->set_hide_on_window_lose_focus(true);
  	add_child(file_list_popup);
  
  	tree_popup = memnew(PopupMenu);
  	tree_popup->set_hide_on_window_lose_focus(true);
  	add_child(tree_popup);
  
  	split_box = memnew(VSplitContainer);
  	split_box->set_v_size_flags(SIZE_EXPAND_FILL);
  	add_child(split_box);
  
  	tree = memnew(Tree);
  
  	tree->set_hide_root(true);
  	tree->set_drag_forwarding(this);
  	tree->set_allow_rmb_select(true);
  	tree->set_select_mode(Tree::SELECT_MULTI);
  	tree->set_custom_minimum_size(Size2(0, 15 * EDSCALE));
  	split_box->add_child(tree);
  
  	tree->connect("item_activated", this, "_tree_activate_file");
  	tree->connect("multi_selected", this, "_tree_multi_selected");
  	tree->connect("item_rmb_selected", this, "_tree_rmb_select");
  	tree->connect("empty_rmb", this, "_tree_rmb_empty");
  	tree->connect("nothing_selected", this, "_tree_empty_selected");
  	tree->connect("gui_input", this, "_tree_gui_input");
  
  	file_list_vb = memnew(VBoxContainer);
  	file_list_vb->set_v_size_flags(SIZE_EXPAND_FILL);
  	split_box->add_child(file_list_vb);
  
  	path_hb = memnew(HBoxContainer);
  	file_list_vb->add_child(path_hb);
  
  	file_list_search_box = memnew(LineEdit);
  	file_list_search_box->set_h_size_flags(SIZE_EXPAND_FILL);
  	file_list_search_box->set_placeholder(TTR("Search files"));
  	file_list_search_box->connect("text_changed", this, "_search_changed", varray(file_list_search_box));
  	path_hb->add_child(file_list_search_box);
  
  	button_file_list_display_mode = memnew(ToolButton);
  	path_hb->add_child(button_file_list_display_mode);
  
  	files = memnew(ItemList);
  	files->set_v_size_flags(SIZE_EXPAND_FILL);
  	files->set_select_mode(ItemList::SELECT_MULTI);
  	files->set_drag_forwarding(this);
  	files->connect("item_rmb_selected", this, "_file_list_rmb_select");
  	files->connect("gui_input", this, "_file_list_gui_input");
  	files->connect("multi_selected", this, "_file_multi_selected");
  	files->connect("rmb_clicked", this, "_file_list_rmb_pressed");
  	files->set_custom_minimum_size(Size2(0, 15 * EDSCALE));
  	files->set_allow_rmb_select(true);
  	file_list_vb->add_child(files);
  
  	scanning_vb = memnew(VBoxContainer);
  	scanning_vb->hide();
  	add_child(scanning_vb);
  
  	Label *slabel = memnew(Label);
  	slabel->set_text(TTR("Scanning Files,\nPlease Wait..."));
  	slabel->set_align(Label::ALIGN_CENTER);
  	scanning_vb->add_child(slabel);
  
  	scanning_progress = memnew(ProgressBar);
  	scanning_vb->add_child(scanning_progress);
  
  	deps_editor = memnew(DependencyEditor);
  	add_child(deps_editor);
  
  	owners_editor = memnew(DependencyEditorOwners(editor));
  	add_child(owners_editor);
  
  	remove_dialog = memnew(DependencyRemoveDialog);
  	remove_dialog->connect("file_removed", this, "_file_deleted");
  	remove_dialog->connect("folder_removed", this, "_folder_deleted");
  	add_child(remove_dialog);
  
  	move_dialog = memnew(EditorDirDialog);
  	move_dialog->get_ok()->set_text(TTR("Move"));
  	add_child(move_dialog);
  	move_dialog->connect("dir_selected", this, "_move_operation_confirm");
  
  	rename_dialog = memnew(ConfirmationDialog);
  	VBoxContainer *rename_dialog_vb = memnew(VBoxContainer);
  	rename_dialog->add_child(rename_dialog_vb);
  
  	rename_dialog_text = memnew(LineEdit);
  	rename_dialog_vb->add_margin_child(TTR("Name:"), rename_dialog_text);
  	rename_dialog->get_ok()->set_text(TTR("Rename"));
  	add_child(rename_dialog);
  	rename_dialog->register_text_enter(rename_dialog_text);
  	rename_dialog->connect("confirmed", this, "_rename_operation_confirm");
  
  	overwrite_dialog = memnew(ConfirmationDialog);
  	overwrite_dialog->set_text(TTR("There is already file or folder with the same name in this location."));
  	overwrite_dialog->get_ok()->set_text(TTR("Overwrite"));
  	add_child(overwrite_dialog);
  	overwrite_dialog->connect("confirmed", this, "_move_with_overwrite");
  
  	duplicate_dialog = memnew(ConfirmationDialog);
  	VBoxContainer *duplicate_dialog_vb = memnew(VBoxContainer);
  	duplicate_dialog->add_child(duplicate_dialog_vb);
  
  	duplicate_dialog_text = memnew(LineEdit);
  	duplicate_dialog_vb->add_margin_child(TTR("Name:"), duplicate_dialog_text);
  	duplicate_dialog->get_ok()->set_text(TTR("Duplicate"));
  	add_child(duplicate_dialog);
  	duplicate_dialog->register_text_enter(duplicate_dialog_text);
  	duplicate_dialog->connect("confirmed", this, "_duplicate_operation_confirm");
  
  	make_dir_dialog = memnew(ConfirmationDialog);
  	make_dir_dialog->set_title(TTR("Create Folder"));
  	VBoxContainer *make_folder_dialog_vb = memnew(VBoxContainer);
  	make_dir_dialog->add_child(make_folder_dialog_vb);
  
  	make_dir_dialog_text = memnew(LineEdit);
  	make_folder_dialog_vb->add_margin_child(TTR("Name:"), make_dir_dialog_text);
  	add_child(make_dir_dialog);
  	make_dir_dialog->register_text_enter(make_dir_dialog_text);
  	make_dir_dialog->connect("confirmed", this, "_make_dir_confirm");
  
  	make_scene_dialog = memnew(ConfirmationDialog);
  	make_scene_dialog->set_title(TTR("Create Scene"));
  	VBoxContainer *make_scene_dialog_vb = memnew(VBoxContainer);
  	make_scene_dialog->add_child(make_scene_dialog_vb);
  
  	make_scene_dialog_text = memnew(LineEdit);
  	make_scene_dialog_vb->add_margin_child(TTR("Name:"), make_scene_dialog_text);
  	add_child(make_scene_dialog);
  	make_scene_dialog->register_text_enter(make_scene_dialog_text);
  	make_scene_dialog->connect("confirmed", this, "_make_scene_confirm");
  
  	make_script_dialog_text = memnew(ScriptCreateDialog);
  	make_script_dialog_text->set_title(TTR("Create Script"));
  	add_child(make_script_dialog_text);
  
  	new_resource_dialog = memnew(CreateDialog);
  	add_child(new_resource_dialog);
  	new_resource_dialog->set_base_type("Resource");
  	new_resource_dialog->connect("create", this, "_resource_created");
  
  	searched_string = String();
  	uncollapsed_paths_before_search = Vector<String>();
  
  	updating_tree = false;
  	tree_update_id = 0;
  	initialized = false;
  	import_dock_needs_update = false;
  
  	history_pos = 0;
  	history_max_size = 20;
  	history.push_back("res://");
  
  	display_mode = DISPLAY_MODE_TREE_ONLY;
  	old_display_mode = DISPLAY_MODE_TREE_ONLY;
  	file_list_display_mode = FILE_LIST_DISPLAY_THUMBNAILS;
  
  	always_show_folders = false;
  }
  
  FileSystemDock::~FileSystemDock() {
  }
  