/*************************************************************************/
/*  filesystem_dock.cpp                                                  */
/*************************************************************************/
/*                       This file is part of:                           */
/*                           GODOT ENGINE                                */
/*                      https://godotengine.org                          */
/*************************************************************************/
/* Copyright (c) 2007-2018 Juan Linietsky, Ariel Manzur.                 */
/* Copyright (c) 2014-2018 Godot Engine contributors (cf. AUTHORS.md)    */
/*                                                                       */
/* Permission is hereby granted, free of charge, to any person obtaining */
/* a copy of this software and associated documentation files (the       */
/* "Software"), to deal in the Software without restriction, including   */
/* without limitation the rights to use, copy, modify, merge, publish,   */
/* distribute, sublicense, and/or sell copies of the Software, and to    */
/* permit persons to whom the Software is furnished to do so, subject to */
/* the following conditions:                                             */
/*                                                                       */
/* The above copyright notice and this permission notice shall be        */
/* included in all copies or substantial portions of the Software.       */
/*                                                                       */
/* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,       */
/* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF    */
/* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.*/
/* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY  */
/* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,  */
/* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE     */
/* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.                */
/*************************************************************************/

#include "filesystem_dock.h"

#include "core/os/keyboard.h"
#include "editor_node.h"
#include "editor_settings.h"
#include "io/resource_loader.h"
#include "os/dir_access.h"
#include "os/file_access.h"
#include "os/os.h"
#include "project_settings.h"
#include "scene/main/viewport.h"

bool FileSystemDock::_create_tree(TreeItem *p_parent, EditorFileSystemDirectory *p_dir, Vector<String> &uncollapsed_paths) {

	TreeItem *item = tree->create_item(p_parent);
	String dname = p_dir->get_name();
	if (dname == "")
		dname = "res://";

	item->set_text(0, dname);
	item->set_icon(0, get_icon("Folder", "EditorIcons"));
	item->set_selectable(0, true);
	String lpath = p_dir->get_path();
	if (lpath != "res://" && lpath.ends_with("/")) {
		lpath = lpath.substr(0, lpath.length() - 1);
	}
	item->set_metadata(0, lpath);
	if (lpath == path) {
		item->select(0);
	}

	if ((path.begins_with(lpath) && path != lpath)) {
		item->set_collapsed(false);
	} else {
		bool is_collapsed = true;
		for (int i = 0; i < uncollapsed_paths.size(); i++) {
			if (lpath == uncollapsed_paths[i]) {
				is_collapsed = false;
				break;
			}
		}
		item->set_collapsed(is_collapsed);
	}

	for (int i = 0; i < p_dir->get_subdir_count(); i++)
		_create_tree(item, p_dir->get_subdir(i), uncollapsed_paths);

	return true;
}

void FileSystemDock::_update_tree(bool keep_collapse_state, bool p_uncollapse_root) {

	Vector<String> uncollapsed_paths;
	if (keep_collapse_state) {
		TreeItem *root = tree->get_root();
		if (root) {
			TreeItem *resTree = root->get_children()->get_next();

			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);
			}
		}
	}

	tree->clear();
	updating_tree = true;

	TreeItem *root = tree->create_item();
	TreeItem *favorites = tree->create_item(root);
	favorites->set_icon(0, get_icon("Favorites", "EditorIcons"));
	favorites->set_text(0, TTR("Favorites:"));
	favorites->set_selectable(0, false);

	Vector<String> favorite_paths = EditorSettings::get_singleton()->get_favorite_dirs();
	String res_path = "res://";
	Ref<Texture> folder_icon = get_icon("Folder", "EditorIcons");
	for (int i = 0; i < favorite_paths.size(); i++) {
		String fave = favorite_paths[i];
		if (!fave.begins_with(res_path))
			continue;

		TreeItem *ti = tree->create_item(favorites);
		if (fave == res_path)
			ti->set_text(0, "/");
		else
			ti->set_text(0, fave.get_file());
		ti->set_icon(0, folder_icon);
		ti->set_selectable(0, true);
		ti->set_metadata(0, fave);
	}

	if (p_uncollapse_root) {
		uncollapsed_paths.push_back("res://");
	}

	_create_tree(root, EditorFileSystem::get_singleton()->get_filesystem(), uncollapsed_paths);
	tree->ensure_cursor_is_visible();
	updating_tree = false;
}

void FileSystemDock::_notification(int p_what) {

	switch (p_what) {

		case NOTIFICATION_RESIZED: {

			bool new_mode = get_size().height < get_viewport_rect().size.height / 2;

			if (new_mode != low_height_mode) {

				low_height_mode = new_mode;

				if (low_height_mode) {

					tree->hide();
					tree->set_v_size_flags(SIZE_EXPAND_FILL);
					button_tree->show();
				} else {

					tree->set_v_size_flags(SIZE_FILL);
					button_tree->hide();
					if (!tree->is_visible()) {
						tree->show();
						button_favorite->show();
						_update_tree(true);
					}
					tree->ensure_cursor_is_visible();

					if (!file_list_vb->is_visible()) {
						file_list_vb->show();
						_update_files(true);
					}
				}
			}

		} break;
		case NOTIFICATION_ENTER_TREE: {

			if (initialized)
				return;
			initialized = true;

			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_favorite->set_icon(get_icon("Favorites", ei));
			//button_instance->set_icon(get_icon("Add", ei));
			//button_open->set_icon(get_icon("Folder", ei));
			button_tree->set_icon(get_icon("Filesystem", ei));
			_update_file_display_toggle_button();
			button_display_mode->connect("pressed", this, "_change_file_display");
			//file_options->set_icon( get_icon("Tools","ei"));
			files->connect("item_activated", this, "_select_file");
			button_hist_next->connect("pressed", this, "_fw_history");
			button_hist_prev->connect("pressed", this, "_bw_history");
			search_box->add_icon_override("right_icon", get_icon("Search", ei));

			button_hist_next->set_icon(get_icon("Forward", ei));
			button_hist_prev->set_icon(get_icon("Back", ei));
			button_show->set_icon(get_icon("GuiVisibilityVisible", "EditorIcons"));
			file_options->connect("id_pressed", this, "_file_option");
			folder_options->connect("id_pressed", this, "_folder_option");

			button_tree->connect("pressed", this, "_go_to_tree", varray(), CONNECT_DEFERRED);
			current_path->connect("text_entered", this, "navigate_to_path");

			if (EditorFileSystem::get_singleton()->is_scanning()) {
				_set_scanning_mode();
			} else {
				_update_tree(false, 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_EXIT_TREE: {

		} break;
		case NOTIFICATION_DRAG_BEGIN: {

			Dictionary dd = get_viewport()->gui_get_drag_data();
			if (tree->is_visible_in_tree() && dd.has("type")) {
				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);
				} else if ((String(dd["type"]) == "favorite")) {
					tree->set_drop_mode_flags(Tree::DROP_MODE_INBETWEEN);
				}
			}

		} break;
		case NOTIFICATION_DRAG_END: {

			tree->set_drop_mode_flags(0);

		} break;
		case EditorSettings::NOTIFICATION_EDITOR_SETTINGS_CHANGED: {

			String ei = "EditorIcons";
			int new_mode = int(EditorSettings::get_singleton()->get("docks/filesystem/display_mode"));

			//_update_icons

			button_reload->set_icon(get_icon("Reload", ei));
			button_favorite->set_icon(get_icon("Favorites", ei));
			button_tree->set_icon(get_icon("Filesystem", ei));
			button_hist_next->set_icon(get_icon("Forward", ei));
			button_hist_prev->set_icon(get_icon("Back", ei));

			search_box->add_icon_override("right_icon", get_icon("Search", ei));

			if (new_mode != display_mode) {
				set_display_mode(new_mode);
			} else {
				_update_file_display_toggle_button();
				_update_files(true);
			}

			_update_tree(true);
		} break;
	}
}

void FileSystemDock::_dir_selected() {

	TreeItem *sel = tree->get_selected();
	if (!sel)
		return;
	path = sel->get_metadata(0);

	bool found = false;
	Vector<String> favorites = EditorSettings::get_singleton()->get_favorite_dirs();
	for (int i = 0; i < favorites.size(); i++) {

		if (favorites[i] == path) {
			found = true;
			break;
		}
	}

	button_favorite->set_pressed(found);
	current_path->set_text(path);
	_push_to_history();

	if (!low_height_mode) {
		_update_files(false);
	}
}

void FileSystemDock::_favorites_pressed() {

	TreeItem *sel = tree->get_selected();
	if (!sel)
		return;
	path = sel->get_metadata(0);

	int idx = -1;
	Vector<String> favorites = EditorSettings::get_singleton()->get_favorite_dirs();
	for (int i = 0; i < favorites.size(); i++) {

		if (favorites[i] == path) {
			idx = i;
			break;
		}
	}

	if (idx == -1) {
		favorites.push_back(path);
	} else {
		favorites.remove(idx);
	}
	EditorSettings::get_singleton()->set_favorite_dirs(favorites);
	_update_tree(true);
}

void FileSystemDock::_show_current_scene_file() {

	int index = EditorNode::get_editor_data().get_edited_scene();
	String path = EditorNode::get_editor_data().get_scene_path(index);
	if (path != String()) {
		navigate_to_path(path);
	}
}

String FileSystemDock::get_selected_path() const {

	TreeItem *sel = tree->get_selected();
	if (!sel)
		return "";

	return sel->get_metadata(0);
}

String FileSystemDock::get_current_path() const {

	return path;
}

void FileSystemDock::navigate_to_path(const String &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.
	String file_name = "";
	DirAccess *dirAccess = DirAccess::open("res://");
	if (dirAccess->file_exists(p_path)) {
		path = p_path.get_base_dir();
		file_name = p_path.get_file();
	} else if (dirAccess->dir_exists(p_path)) {
		path = p_path;
	} else {
		ERR_EXPLAIN(vformat(TTR("Cannot navigate to '%s' as it has not been found in the file system!"), p_path));
		ERR_FAIL();
	}

	current_path->set_text(path);
	_push_to_history();

	if (!low_height_mode) {
		_update_tree(true);
		_update_files(false);
	} else {
		_go_to_file_list();
	}

	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::_thumbnail_done(const String &p_path, const Ref<Texture> &p_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)
			files->set_item_icon(idx, p_preview);
	}
}

void FileSystemDock::_update_file_display_toggle_button() {

	if (button_display_mode->is_pressed()) {
		display_mode = DISPLAY_LIST;
		button_display_mode->set_icon(get_icon("FileThumbnail", "EditorIcons"));
		button_display_mode->set_tooltip(TTR("View items as a grid of thumbnails."));
	} else {
		display_mode = DISPLAY_THUMBNAILS;
		button_display_mode->set_icon(get_icon("FileList", "EditorIcons"));
		button_display_mode->set_tooltip(TTR("View items as a list."));
	}
}

void FileSystemDock::_change_file_display() {

	_update_file_display_toggle_button();

	EditorSettings::get_singleton()->set("docks/filesystem/display_mode", display_mode);

	_update_files(true);
}

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);
	}

	String match = search_box->get_text().to_lower();

	for (int i = 0; i < p_path->get_file_count(); i++) {
		String file = p_path->get_file(i);

		if (file.to_lower().find(match) != -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);
			fi.import_status = 0;

			matches->push_back(fi);
			if (matches->size() > p_max_items)
				return;
		}
	}
}

void FileSystemDock::_update_files(bool p_keep_selection) {

	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();

	current_path->set_text(path);

	EditorFileSystemDirectory *efd = EditorFileSystem::get_singleton()->get_filesystem_path(path);
	if (!efd)
		return;

	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 always_show_folders = EditorSettings::get_singleton()->get("docks/filesystem/always_show_folders");

	bool use_thumbnails = (display_mode == DISPLAY_THUMBNAILS);
	bool use_folders = search_box->get_text().length() == 0 && (low_height_mode || always_show_folders);

	if (use_thumbnails) {

		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 {

		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());
	}

	if (use_folders) {
		Ref<Texture> folderIcon = (use_thumbnails) ? folder_thumbnail : get_icon("folder", "FileDialog");

		if (path != "res://") {
			files->add_item("..", folderIcon, true);

			String bd = path.get_base_dir();
			if (bd != "res://" && !bd.ends_with("/"))
				bd += "/";

			files->set_item_metadata(files->get_item_count() - 1, bd);
		}

		for (int i = 0; i < efd->get_subdir_count(); i++) {

			String dname = efd->get_subdir(i)->get_name();

			files->add_item(dname, folderIcon, true);
			files->set_item_metadata(files->get_item_count() - 1, path.plus_file(dname) + "/");

			if (cselection.has(dname))
				files->select(files->get_item_count() - 1, false);
		}
	}

	List<FileInfo> filelist;

	if (search_box->get_text().length() > 0) {

		_search(EditorFileSystem::get_singleton()->get_filesystem(), &filelist, 128);
		filelist.sort();
	} else {

		for (int i = 0; i < efd->get_file_count(); i++) {

			FileInfo fi;
			fi.name = efd->get_file(i);
			fi.path = path.plus_file(fi.name);
			fi.type = efd->get_file_type(i);
			fi.import_broken = !efd->get_file_import_is_valid(i);
			fi.import_status = 0;

			filelist.push_back(fi);
		}
		filelist.sort();
	}

	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 = fname;

		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.");
		}

		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);
			if (!finfo->import_broken) {
				Array udata;
				udata.resize(2);
				udata[0] = item_index;
				udata[1] = fname;
				EditorResourcePreview::get_singleton()->queue_resource_preview(fpath, this, "_thumbnail_done", udata);
			}
		} else {
			files->add_item(fname, type_icon, true);
			item_index = files->get_item_count() - 1;
			files->set_item_metadata(item_index, fpath);
		}

		if (cselection.has(fname))
			files->select(item_index, false);

		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(int p_idx) {
	String fpath = files->get_item_metadata(p_idx);
	if (fpath.ends_with("/")) {
		if (fpath != "res://") {
			fpath = fpath.substr(0, fpath.length() - 1);
		}
		navigate_to_path(fpath);
	} else {
		if (ResourceLoader::get_resource_type(fpath) == "PackedScene") {
			editor->open_request(fpath);
		} else {
			editor->load_resource(fpath);
		}
	}
}

void FileSystemDock::_go_to_tree() {

	if (low_height_mode) {
		tree->show();
		button_favorite->show();
		file_list_vb->hide();
	}

	_update_tree(true);
	tree->grab_focus();
	tree->ensure_cursor_is_visible();
	//button_open->hide();
	//file_options->hide();
}

void FileSystemDock::_preview_invalidated(const String &p_path) {

	if (display_mode == DISPLAY_THUMBNAILS && p_path.get_base_dir() == path && search_box->get_text() == String() && 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, "_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(true);
	}

	if (file_list_vb->is_visible()) {
		_update_files(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];
	current_path->set_text(path);

	if (tree->is_visible()) {
		_update_tree(true);
		tree->grab_focus();
		tree->ensure_cursor_is_visible();
	}

	if (file_list_vb->is_visible()) {
		_update_files(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) 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;
	}

	//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_line("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);
						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_line("  Remap: " + 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);
		}
	} 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_line("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_line("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_favorite_dirs_list_after_move(const Map<String, String> &p_renames) const {

	Vector<String> favorite_dirs = EditorSettings::get_singleton()->get_favorite_dirs();
	Vector<String> new_favorite_dirs;

	for (int i = 0; i < favorite_dirs.size(); i++) {
		String old_path = favorite_dirs[i] + "/";

		if (p_renames.has(old_path)) {
			String new_path = p_renames[old_path];
			new_favorite_dirs.push_back(new_path.substr(0, new_path.length() - 1));
		} else {
			new_favorite_dirs.push_back(favorite_dirs[i]);
		}
	}

	EditorSettings::get_singleton()->set_favorite_dirs(new_favorite_dirs);
}

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.ends_with(".") || dir_name.ends_with(" ")) {
		EditorNode::get_singleton()->show_warning(TTR("Provided name contains invalid characters"));
		return;
	}

	print_line("Making folder " + dir_name + " in " + path);
	DirAccess *da = DirAccess::create(DirAccess::ACCESS_RESOURCES);
	Error err = da->change_dir(path);
	if (err == OK) {
		err = da->make_dir(dir_name);
	}
	memdelete(da);

	if (err == OK) {
		print_line("call rescan!");
		_rescan();
	} else {
		EditorNode::get_singleton()->show_warning(TTR("Could not create 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;
	}

	//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);
	_update_dependencies_after_move(file_renames);
	_update_resource_paths_after_move(file_renames);
	_update_favorite_dirs_list_after_move(folder_renames);

	//Rescan everything
	print_line("call rescan!");
	_rescan();
}

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 new_path;
	String base_dir = to_duplicate.path.get_base_dir();
	if (to_duplicate.is_file) {
		new_path = base_dir.plus_file(new_name);
	} else {
		new_path = base_dir.substr(0, base_dir.find_last("/")) + "/" + 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_line("call 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;
		}
	}

	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) {
		_update_dependencies_after_move(file_renames);
		_update_resource_paths_after_move(file_renames);
		_update_favorite_dirs_list_after_move(folder_renames);

		print_line("call rescan!");
		_rescan();
	}
}

void FileSystemDock::_file_option(int p_option) {
	switch (p_option) {
		case FILE_SHOW_IN_EXPLORER: {

			String path = this->path;

			// first try to grab directory from selected file, so that it works for searched files
			int idx = files->get_current();

			if (idx >= 0 && idx < files->get_item_count()) {
				path = files->get_item_metadata(idx);
				path = path.get_base_dir();
			}

			path = ProjectSettings::get_singleton()->globalize_path(path);
			OS::get_singleton()->shell_open(String("file://") + path);
		} break;
		case FILE_OPEN: {
			for (int i = 0; i < files->get_item_count(); i++) {
				if (files->is_selected(i)) {
					_select_file(i);
				}
			}
		} break;
		case FILE_INSTANCE: {

			Vector<String> paths;

			for (int i = 0; i < files->get_item_count(); i++) {
				if (!files->is_selected(i))
					continue;
				String fpath = files->get_item_metadata(i);
				if (EditorFileSystem::get_singleton()->get_file_type(fpath) == "PackedScene") {
					paths.push_back(fpath);
				}
			}

			if (!paths.empty()) {
				emit_signal("instance", paths);
			}
		} break;
		case FILE_DEPENDENCIES: {

			int idx = files->get_current();
			if (idx < 0 || idx >= files->get_item_count())
				break;
			String fpath = files->get_item_metadata(idx);
			deps_editor->edit(fpath);
		} break;
		case FILE_OWNERS: {

			int idx = files->get_current();
			if (idx < 0 || idx >= files->get_item_count())
				break;
			String fpath = files->get_item_metadata(idx);
			owners_editor->show(fpath);
		} break;
		case FILE_MOVE: {
			to_move.clear();
			for (int i = 0; i < files->get_item_count(); i++) {
				if (!files->is_selected(i))
					continue;

				String fpath = files->get_item_metadata(i);
				to_move.push_back(FileOrFolder(fpath, !fpath.ends_with("/")));
			}
			if (to_move.size() > 0) {
				move_dialog->popup_centered_ratio();
			}
		} break;
		case FILE_RENAME: {
			int idx = files->get_current();
			if (idx < 0 || idx >= files->get_item_count())
				break;

			to_rename.path = files->get_item_metadata(idx);
			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: {
			Vector<String> remove_files;
			Vector<String> remove_folders;

			for (int i = 0; i < files->get_item_count(); i++) {
				String fpath = files->get_item_metadata(i);
				if (files->is_selected(i) && 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);
				//1) find if used
				//2) warn
			}
		} break;
		case FILE_DUPLICATE: {
			int idx = files->get_current();
			if (idx < 0 || idx >= files->get_item_count())
				break;

			to_duplicate.path = files->get_item_metadata(idx);
			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: {

			Vector<String> reimport;
			for (int i = 0; i < files->get_item_count(); i++) {

				if (!files->is_selected(i))
					continue;

				String fpath = files->get_item_metadata(i);
				reimport.push_back(fpath);
			}

			ERR_FAIL_COND(reimport.size() == 0);
			/*
			Ref<ResourceImportMetadata> rimd = ResourceLoader::load_import_metadata(reimport[0]);
			ERR_FAIL_COND(!rimd.is_valid());
			String editor=rimd->get_editor();

			if (editor.begins_with("texture_")) { //compatibility fix for old texture format
				editor="texture";
			}

			Ref<EditorImportPlugin> rimp = EditorImportExport::get_singleton()->get_import_plugin_by_name(editor);
			ERR_FAIL_COND(!rimp.is_valid());

			if (reimport.size()==1) {
				rimp->import_dialog(reimport[0]);
			} else {
				rimp->reimport_multiple_files(reimport);

			}
			*/
		} 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_SCRIPT: {
			String tarDir = path;
			if (tarDir != "res://" && !tarDir.ends_with("/")) {
				tarDir += "/";
			}

			make_script_dialog_text->config("Node", tarDir + "new_script.gd");
			make_script_dialog_text->popup_centered(Size2(300, 300) * EDSCALE);
		} break;
		case FILE_COPY_PATH: {
			int idx = files->get_current();
			if (idx < 0 || idx >= files->get_item_count())
				break;
			String fpath = files->get_item_metadata(idx);
			OS::get_singleton()->set_clipboard(fpath);
		} break;
	}
}

void FileSystemDock::_folder_option(int p_option) {

	TreeItem *selected = tree->get_selected();

	switch (p_option) {
		case FOLDER_EXPAND_ALL:
		case FOLDER_COLLAPSE_ALL: {
			bool is_collapsed = (p_option == FOLDER_COLLAPSE_ALL);
			Vector<TreeItem *> needs_check;
			needs_check.push_back(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;
		case FOLDER_MOVE: {
			to_move.clear();
			String fpath = selected->get_metadata(tree->get_selected_column());
			if (fpath != "res://") {
				fpath = fpath.ends_with("/") ? fpath.substr(0, fpath.length() - 1) : fpath;
				to_move.push_back(FileOrFolder(fpath, false));
				move_dialog->popup_centered_ratio();
			}
		} break;
		case FOLDER_RENAME: {
			to_rename.path = selected->get_metadata(tree->get_selected_column());
			to_rename.is_file = false;
			if (to_rename.path != "res://") {
				String name = to_rename.path.ends_with("/") ? to_rename.path.substr(0, to_rename.path.length() - 1).get_file() : to_rename.path.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 FOLDER_REMOVE: {
			Vector<String> remove_folders;
			Vector<String> remove_files;
			String fpath = selected->get_metadata(tree->get_selected_column());
			if (fpath != "res://") {
				remove_folders.push_back(fpath);
				remove_dialog->show(remove_folders, remove_files);
			}
		} break;
		case FOLDER_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 FOLDER_COPY_PATH: {
			String fpath = selected->get_metadata(tree->get_selected_column());
			OS::get_singleton()->set_clipboard(fpath);
		} break;
		case FOLDER_SHOW_IN_EXPLORER: {
			String fpath = selected->get_metadata(tree->get_selected_column());
			String dir = ProjectSettings::get_singleton()->globalize_path(fpath);
			OS::get_singleton()->shell_open(String("file://") + dir);
		} break;
	}
}

void FileSystemDock::_go_to_file_list() {

	if (low_height_mode) {
		tree->hide();
		file_list_vb->show();
		button_favorite->hide();
	} else {
		bool collapsed = tree->get_selected()->is_collapsed();
		tree->get_selected()->set_collapsed(!collapsed);
	}

	//file_options->show();

	_update_files(false);

	//emit_signal("open",path);
}

void FileSystemDock::_dir_rmb_pressed(const Vector2 &p_pos) {
	folder_options->clear();
	folder_options->set_size(Size2(1, 1));

	folder_options->add_item(TTR("Expand all"), FOLDER_EXPAND_ALL);
	folder_options->add_item(TTR("Collapse all"), FOLDER_COLLAPSE_ALL);

	TreeItem *item = tree->get_selected();
	if (item) {
		String fpath = item->get_metadata(tree->get_selected_column());
		folder_options->add_separator();
		folder_options->add_item(TTR("Copy Path"), FOLDER_COPY_PATH);
		if (fpath != "res://") {
			folder_options->add_item(TTR("Rename..."), FOLDER_RENAME);
			folder_options->add_item(TTR("Move To..."), FOLDER_MOVE);
			folder_options->add_item(TTR("Delete"), FOLDER_REMOVE);
		}
		folder_options->add_separator();
		folder_options->add_item(TTR("New Folder..."), FOLDER_NEW_FOLDER);
		folder_options->add_item(TTR("Show In File Manager"), FOLDER_SHOW_IN_EXPLORER);
	}
	folder_options->set_position(tree->get_global_position() + p_pos);
	folder_options->popup();
}

void FileSystemDock::_search_changed(const String &p_text) {

	if (file_list_vb->is_visible())
		_update_files(false);
}

void FileSystemDock::_rescan() {

	_set_scanning_mode();
	EditorFileSystem::get_singleton()->scan();
}

void FileSystemDock::fix_dependencies(const String &p_for_file) {
	deps_editor->edit(p_for_file);
}

void FileSystemDock::focus_on_filter() {

	if (low_height_mode && tree->is_visible()) {
		// Tree mode, switch to files list with search box
		tree->hide();
		file_list_vb->show();
		button_favorite->hide();
	}

	search_box->grab_focus();
}

void FileSystemDock::set_display_mode(int p_mode) {

	if (p_mode == display_mode)
		return;

	button_display_mode->set_pressed(p_mode == DISPLAY_LIST);
	_change_file_display();
}

Variant FileSystemDock::get_drag_data_fw(const Point2 &p_point, Control *p_from) {
	bool is_favorite = false;
	Vector<String> paths;

	if (p_from == tree) {
		TreeItem *selected = tree->get_selected();
		if (!selected)
			return Variant();

		String folder = selected->get_metadata(0);
		if (folder == String())
			return Variant();

		paths.push_back(folder.ends_with("/") ? folder : (folder + "/"));
		is_favorite = selected->get_parent() != NULL && tree->get_root()->get_children() == selected->get_parent();
	} 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));
			}
		}
	}

	if (paths.empty())
		return Variant();

	Dictionary drag_data = EditorNode::get_singleton()->drag_files_and_dirs(paths, p_from);
	if (is_favorite) {
		drag_data["type"] = "favorite";
	}
	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("type") && String(drag_data["type"]) == "favorite") {

		//moving favorite around
		TreeItem *ti = tree->get_item_at_position(p_point);
		if (!ti)
			return false;

		int what = tree->get_drop_section_at_position(p_point);

		if (ti == tree->get_root()->get_children()) {
			return (what == 1); //the parent, first fav
		}
		if (ti->get_parent() && tree->get_root()->get_children() == ti->get_parent()) {
			return true; // a favorite
		}

		if (ti == tree->get_root()->get_children()->get_next()) {
			return (what == -1); //the tree, last fav
		}

		return false;
	}

	if (drag_data.has("type") && String(drag_data["type"]) == "resource") {
		String to_dir = _get_drag_target_folder(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")) {
		String to_dir = _get_drag_target_folder(p_point, p_from);
		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;

	if (drag_data.has("type") && String(drag_data["type"]) == "favorite") {

		//moving favorite around
		TreeItem *ti = tree->get_item_at_position(p_point);
		if (!ti)
			return;

		Vector<String> files = drag_data["files"];

		ERR_FAIL_COND(files.size() != 1);

		String swap = files[0];
		if (swap != "res://" && swap.ends_with("/")) {
			swap = swap.substr(0, swap.length() - 1);
		}

		int what = tree->get_drop_section_at_position(p_point);

		TreeItem *swap_item = NULL;

		if (ti == tree->get_root()->get_children()) {
			swap_item = tree->get_root()->get_children()->get_children();

		} else if (ti->get_parent() && tree->get_root()->get_children() == ti->get_parent()) {
			if (what == -1) {
				swap_item = ti;
			} else {
				swap_item = ti->get_next();
			}
		}

		String swap_with;

		if (swap_item) {
			swap_with = swap_item->get_metadata(0);
			if (swap_with != "res://" && swap_with.ends_with("/")) {
				swap_with = swap_with.substr(0, swap_with.length() - 1);
			}
		}

		if (swap == swap_with)
			return;

		Vector<String> dirs = EditorSettings::get_singleton()->get_favorite_dirs();

		ERR_FAIL_COND(dirs.find(swap) == -1);
		ERR_FAIL_COND(swap_with != String() && dirs.find(swap_with) == -1);

		dirs.erase(swap);

		if (swap_with == String()) {
			dirs.push_back(swap);
		} else {
			int idx = dirs.find(swap_with);
			dirs.insert(idx, swap);
		}

		EditorSettings::get_singleton()->set_favorite_dirs(dirs);
		_update_tree(true);
		return;
	}

	if (drag_data.has("type") && String(drag_data["type"]) == "resource") {
		Ref<Resource> res = drag_data["resource"];
		String to_dir = _get_drag_target_folder(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")) {
		String to_dir = _get_drag_target_folder(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);
		}
	}
}

String FileSystemDock::_get_drag_target_folder(const Point2 &p_point, Control *p_from) const {
	if (p_from == files) {
		int pos = files->get_item_at_position(p_point, true);
		if (pos == -1)
			return path;

		String target = files->get_item_metadata(pos);
		return target.ends_with("/") ? target : path;
	}

	if (p_from == tree) {
		TreeItem *ti = tree->get_item_at_position(p_point);
		if (ti && ti != tree->get_root()->get_children())
			return ti->get_metadata(0);
	}

	return String();
}

void FileSystemDock::_files_list_rmb_select(int p_item, const Vector2 &p_pos) {

	//Right clicking ".." should clear current selection
	if (files->get_item_text(p_item) == "..") {
		for (int i = 0; i < files->get_item_count(); i++) {
			files->unselect(i);
		}
	}

	Vector<String> filenames;
	Vector<String> foldernames;

	bool all_files = true;
	bool all_files_scenes = true;
	bool all_folders = true;
	for (int i = 0; i < files->get_item_count(); i++) {
		if (!files->is_selected(i)) {
			continue;
		}

		String fpath = files->get_item_metadata(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");
		}
	}

	file_options->clear();
	file_options->set_size(Size2(1, 1));
	if (all_files) {

		if (all_files_scenes && filenames.size() >= 1) {
			file_options->add_item(TTR("Open Scene(s)"), FILE_OPEN);
			file_options->add_item(TTR("Instance"), FILE_INSTANCE);
			file_options->add_separator();
		}

		if (!all_files_scenes && filenames.size() == 1) {
			file_options->add_item(TTR("Open"), FILE_OPEN);
			file_options->add_separator();
		}

		if (filenames.size() == 1) {
			file_options->add_item(TTR("Edit Dependencies..."), FILE_DEPENDENCIES);
			file_options->add_item(TTR("View Owners..."), FILE_OWNERS);
			file_options->add_separator();
		}

	} else if (all_folders && foldernames.size() > 0) {
		file_options->add_item(TTR("Open"), FILE_OPEN);
		file_options->add_separator();
	}

	int num_items = filenames.size() + foldernames.size();
	if (num_items >= 1) {
		if (num_items == 1) {
			file_options->add_item(TTR("Copy Path"), FILE_COPY_PATH);
			file_options->add_item(TTR("Rename..."), FILE_RENAME);
			file_options->add_item(TTR("Duplicate..."), FILE_DUPLICATE);
		}
		file_options->add_item(TTR("Move To..."), FILE_MOVE);
		file_options->add_item(TTR("Delete"), FILE_REMOVE);
		file_options->add_separator();
	}

	file_options->add_item(TTR("New Folder..."), FILE_NEW_FOLDER);
	file_options->add_item(TTR("New Script..."), FILE_NEW_SCRIPT);
	file_options->add_item(TTR("Show In File Manager"), FILE_SHOW_IN_EXPLORER);

	file_options->set_position(files->get_global_position() + p_pos);
	file_options->popup();
}

void FileSystemDock::_rmb_pressed(const Vector2 &p_pos) {
	file_options->clear();
	file_options->set_size(Size2(1, 1));

	file_options->add_item(TTR("New Folder..."), FILE_NEW_FOLDER);
	file_options->add_item(TTR("New Script..."), FILE_NEW_SCRIPT);
	file_options->add_item(TTR("Show In File Manager"), FILE_SHOW_IN_EXPLORER);
	file_options->set_position(files->get_global_position() + p_pos);
	file_options->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) {

	import_dock_needs_update = true;
	call_deferred("_update_import_dock");
}

void FileSystemDock::_files_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_option(FILE_DUPLICATE);
		} else if (ED_IS_SHORTCUT("filesystem_dock/copy_path", p_event)) {
			_file_option(FILE_COPY_PATH);
		} else if (ED_IS_SHORTCUT("filesystem_dock/delete", p_event)) {
			_file_option(FILE_REMOVE);
		} else if (ED_IS_SHORTCUT("filesystem_dock/rename", p_event)) {
			_file_option(FILE_RENAME);
		}
	}
}

void FileSystemDock::_file_selected() {

	import_dock_needs_update = true;
	_update_import_dock();
}

void FileSystemDock::_update_import_dock() {

	if (!import_dock_needs_update)
		return;

	//check import
	Vector<String> imports;
	String import_type;

	for (int i = 0; i < files->get_item_count(); i++) {
		if (!files->is_selected(i))
			continue;

		String fpath = files->get_item_metadata(i);
		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::_bind_methods() {

	ClassDB::bind_method(D_METHOD("_files_gui_input"), &FileSystemDock::_files_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("_favorites_pressed"), &FileSystemDock::_favorites_pressed);
	ClassDB::bind_method(D_METHOD("_show_current_scene_file"), &FileSystemDock::_show_current_scene_file);
	//ClassDB::bind_method(D_METHOD("_instance_pressed"),&ScenesDock::_instance_pressed);
	ClassDB::bind_method(D_METHOD("_go_to_file_list"), &FileSystemDock::_go_to_file_list);
	ClassDB::bind_method(D_METHOD("_dir_rmb_pressed"), &FileSystemDock::_dir_rmb_pressed);

	ClassDB::bind_method(D_METHOD("_thumbnail_done"), &FileSystemDock::_thumbnail_done);
	ClassDB::bind_method(D_METHOD("_select_file"), &FileSystemDock::_select_file);
	ClassDB::bind_method(D_METHOD("_go_to_tree"), &FileSystemDock::_go_to_tree);
	ClassDB::bind_method(D_METHOD("navigate_to_path"), &FileSystemDock::navigate_to_path);
	ClassDB::bind_method(D_METHOD("_change_file_display"), &FileSystemDock::_change_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("_dir_selected"), &FileSystemDock::_dir_selected);
	ClassDB::bind_method(D_METHOD("_file_option"), &FileSystemDock::_file_option);
	ClassDB::bind_method(D_METHOD("_folder_option"), &FileSystemDock::_folder_option);
	ClassDB::bind_method(D_METHOD("_make_dir_confirm"), &FileSystemDock::_make_dir_confirm);
	ClassDB::bind_method(D_METHOD("_move_operation_confirm"), &FileSystemDock::_move_operation_confirm);
	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("_files_list_rmb_select"), &FileSystemDock::_files_list_rmb_select);

	ClassDB::bind_method(D_METHOD("_preview_invalidated"), &FileSystemDock::_preview_invalidated);
	ClassDB::bind_method(D_METHOD("_file_selected"), &FileSystemDock::_file_selected);
	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("_rmb_pressed"), &FileSystemDock::_rmb_pressed);

	ADD_SIGNAL(MethodInfo("instance", PropertyInfo(Variant::POOL_STRING_ARRAY, "files")));
	ADD_SIGNAL(MethodInfo("open"));
}

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"));

	HBoxContainer *toolbar_hbc = memnew(HBoxContainer);
	toolbar_hbc->add_constant_override("separation", 0);
	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 Directory"));
	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 Directory"));
	toolbar_hbc->add_child(button_hist_next);

	current_path = memnew(LineEdit);
	current_path->set_h_size_flags(SIZE_EXPAND_FILL);
	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);

	//toolbar_hbc->add_spacer();

	button_favorite = memnew(Button);
	button_favorite->set_flat(true);
	button_favorite->set_toggle_mode(true);
	button_favorite->connect("pressed", this, "_favorites_pressed");
	button_favorite->set_tooltip(TTR("Toggle folder status as Favorite."));
	button_favorite->set_focus_mode(FOCUS_NONE);
	toolbar_hbc->add_child(button_favorite);

	button_show = memnew(Button);
	button_show->set_flat(true);
	button_show->connect("pressed", this, "_show_current_scene_file");
	toolbar_hbc->add_child(button_show);
	button_show->set_focus_mode(FOCUS_NONE);
	button_show->set_tooltip(TTR("Show current scene file."));

	//Control *spacer = memnew( Control);

	/*
	button_open = memnew( Button );
	button_open->set_flat(true);
	button_open->connect("pressed",this,"_go_to_file_list");
	toolbar_hbc->add_child(button_open);
	button_open->hide();
	button_open->set_focus_mode(FOCUS_NONE);
	button_open->set_tooltip("Open the selected file.\nOpen as scene if a scene, or as resource otherwise.");


	button_instance = memnew( Button );
	button_instance->set_flat(true);
	button_instance->connect("pressed",this,"_instance_pressed");
	toolbar_hbc->add_child(button_instance);
	button_instance->hide();
	button_instance->set_focus_mode(FOCUS_NONE);
	button_instance->set_tooltip(TTR("Instance the selected scene(s) as child of the selected node."));

*/
	file_options = memnew(PopupMenu);
	add_child(file_options);

	folder_options = memnew(PopupMenu);
	add_child(folder_options);

	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_custom_minimum_size(Size2(0, 200 * EDSCALE));
	split_box->add_child(tree);

	tree->connect("item_edited", this, "_favorite_toggled");
	tree->connect("item_activated", this, "_go_to_file_list");
	tree->connect("cell_selected", this, "_dir_selected");
	tree->connect("item_rmb_selected", this, "_dir_rmb_pressed");

	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);

	button_tree = memnew(ToolButton);
	button_tree->set_tooltip(TTR("Enter tree-view."));
	button_tree->hide();
	path_hb->add_child(button_tree);

	search_box = memnew(LineEdit);
	search_box->set_h_size_flags(SIZE_EXPAND_FILL);
	search_box->set_placeholder(TTR("Search files"));
	search_box->connect("text_changed", this, "_search_changed");
	path_hb->add_child(search_box);

	button_display_mode = memnew(ToolButton);
	button_display_mode->set_toggle_mode(true);
	path_hb->add_child(button_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, "_files_list_rmb_select");
	files->connect("gui_input", this, "_files_gui_input");
	files->connect("item_selected", this, "_file_selected");
	files->connect("multi_selected", this, "_file_multi_selected");
	files->connect("rmb_clicked", this, "_rmb_pressed");
	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);
	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_script_dialog_text = memnew(ScriptCreateDialog);
	make_script_dialog_text->set_title(TTR("Create Script"));
	add_child(make_script_dialog_text);

	updating_tree = false;
	initialized = false;
	import_dock_needs_update = false;

	history_pos = 0;
	history_max_size = 20;
	history.push_back("res://");

	low_height_mode = false;
	display_mode = DISPLAY_THUMBNAILS;
}

FileSystemDock::~FileSystemDock() {
}