/*************************************************************************/
/*  editor_file_dialog.cpp                                               */
/*************************************************************************/
/*                       This file is part of:                           */
/*                           GODOT ENGINE                                */
/*                    http://www.godotengine.org                         */
/*************************************************************************/
/* Copyright (c) 2007-2017 Juan Linietsky, Ariel Manzur.                 */
/*                                                                       */
/* 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 "editor_file_dialog.h"
#include "scene/gui/label.h"
#include "scene/gui/center_container.h"
#include "print_string.h"
#include "os/keyboard.h"
#include "editor_resource_preview.h"
#include "editor_settings.h"
#include "scene/gui/margin_container.h"
#include "os/file_access.h"
#include "editor_scale.h"
EditorFileDialog::GetIconFunc EditorFileDialog::get_icon_func=NULL;
EditorFileDialog::GetIconFunc EditorFileDialog::get_large_icon_func=NULL;

EditorFileDialog::RegisterFunc EditorFileDialog::register_func=NULL;
EditorFileDialog::RegisterFunc EditorFileDialog::unregister_func=NULL;


VBoxContainer *EditorFileDialog::get_vbox() {
	return vbox;

}

void EditorFileDialog::_notification(int p_what) {

	if (p_what==NOTIFICATION_ENTER_TREE) {

		mode_thumbnails->set_icon(get_icon("FileThumbnail","EditorIcons"));
		mode_list->set_icon(get_icon("FileList","EditorIcons"));
		dir_prev->set_icon(get_icon("ArrowLeft","EditorIcons"));
		dir_next->set_icon(get_icon("ArrowRight","EditorIcons"));
		dir_up->set_icon(get_icon("ArrowUp","EditorIcons"));
		refresh->set_icon(get_icon("Reload","EditorIcons"));
		favorite->set_icon(get_icon("Favorites","EditorIcons"));

		fav_up->set_icon(get_icon("MoveUp","EditorIcons"));
		fav_down->set_icon(get_icon("MoveDown","EditorIcons"));
		fav_rm->set_icon(get_icon("RemoveSmall","EditorIcons"));

	} else if (p_what==NOTIFICATION_PROCESS) {

		if (preview_waiting) {
			preview_wheel_timeout-=get_process_delta_time();
			if (preview_wheel_timeout<=0) {
				preview_wheel_index++;
				if (preview_wheel_index>=8)
					preview_wheel_index=0;
				Ref<Texture> frame = get_icon("WaitPreview"+itos(preview_wheel_index+1),"EditorIcons");
				preview->set_texture(frame);
				preview_wheel_timeout=0.1;
			}
		}
	} else if (p_what==NOTIFICATION_DRAW) {

		//RID ci = get_canvas_item();
		//get_stylebox("panel","PopupMenu")->draw(ci,Rect2(Point2(),get_size()));
	} else if (p_what==NOTIFICATION_POPUP_HIDE) {

		set_process_unhandled_input(false);

	} else if (p_what==EditorSettings::NOTIFICATION_EDITOR_SETTINGS_CHANGED) {

		bool show_hidden=EditorSettings::get_singleton()->get("filesystem/file_dialog/show_hidden_files");
		if (show_hidden_files!=show_hidden)
			set_show_hidden_files(show_hidden);
		set_display_mode((DisplayMode)EditorSettings::get_singleton()->get("filesystem/file_dialog/display_mode").operator int());
	}
}

void EditorFileDialog::_unhandled_input(const InputEvent& p_event) {

	if (p_event.type==InputEvent::KEY && is_window_modal_on_top()) {

		if (p_event.key.pressed) {

			bool handled=false;

			if (ED_IS_SHORTCUT("file_dialog/go_back", p_event)) {
				_go_back();
				handled=true;
			}
			if (ED_IS_SHORTCUT("file_dialog/go_forward", p_event)) {
				_go_forward();
				handled=true;
			}
			if (ED_IS_SHORTCUT("file_dialog/go_up", p_event)) {
				_go_up();
				handled=true;
			}
			if (ED_IS_SHORTCUT("file_dialog/refresh", p_event)) {
				invalidate();
				handled=true;
			}
			if (ED_IS_SHORTCUT("file_dialog/toggle_hidden_files", p_event)) {
				bool show=!show_hidden_files;
				set_show_hidden_files(show);
				EditorSettings::get_singleton()->set("filesystem/file_dialog/show_hidden_files",show);
				handled=true;
			}
			if (ED_IS_SHORTCUT("file_dialog/toggle_favorite", p_event)) {
				_favorite_toggled(favorite->is_pressed());
				handled=true;
			}
			if (ED_IS_SHORTCUT("file_dialog/toggle_mode", p_event)) {
				if (mode_thumbnails->is_pressed()) {
					set_display_mode(DISPLAY_LIST);
				} else {
					set_display_mode(DISPLAY_THUMBNAILS);
				}
				handled=true;
			}
			if (ED_IS_SHORTCUT("file_dialog/create_folder", p_event)) {
				_make_dir();
				handled=true;
			}
			if (ED_IS_SHORTCUT("file_dialog/focus_path", p_event)) {
				dir->grab_focus();
				handled=true;
			}
			if (ED_IS_SHORTCUT("file_dialog/move_favorite_up", p_event)) {
				_favorite_move_up();
				handled=true;
			}
			if (ED_IS_SHORTCUT("file_dialog/move_favorite_down", p_event)) {
				_favorite_move_down();
				handled=true;
			}

			if (handled) {
				accept_event();
			}
		}
	}
}

void EditorFileDialog::set_enable_multiple_selection(bool p_enable) {

	item_list->set_select_mode(p_enable?ItemList::SELECT_MULTI:ItemList::SELECT_SINGLE);

};

Vector<String> EditorFileDialog::get_selected_files() const {

	Vector<String> list;
	for(int i=0;i<item_list->get_item_count();i++) {
		if (item_list->is_selected(i))
			list.push_back(item_list->get_item_text(i));
	}
	return list;

};

void EditorFileDialog::update_dir() {

	dir->set_text(dir_access->get_current_dir());
}

void EditorFileDialog::_dir_entered(String p_dir) {


	dir_access->change_dir(p_dir);
	file->set_text("");
	invalidate();
	update_dir();
	_push_history();


}

void EditorFileDialog::_file_entered(const String& p_file) {

	_action_pressed();
}

void EditorFileDialog::_save_confirm_pressed() {
	String f=dir_access->get_current_dir().plus_file(file->get_text());
	_save_to_recent();
	emit_signal("file_selected",f);
	hide();
}

void EditorFileDialog::_post_popup() {

	ConfirmationDialog::_post_popup();
	if (invalidated) {
		update_file_list();
		invalidated=false;
	}
	if (mode==MODE_SAVE_FILE)
		file->grab_focus();
	else
		item_list->grab_focus();

	if (is_visible() && get_current_file()!="")
		_request_single_thumbnail(get_current_dir().plus_file(get_current_file()));

	if (is_visible()) {
		Ref<Texture> folder = get_icon("folder","FileDialog");
		recent->clear();


		bool res = access==ACCESS_RESOURCES;
		Vector<String> recentd = EditorSettings::get_singleton()->get_recent_dirs();
		for(int i=0;i<recentd.size();i++) {
			bool cres = recentd[i].begins_with("res://");
			if (cres!=res)
				continue;
			String name = recentd[i];
			if (res && name=="res://") {
				name="/";
			} else {
				name=name.get_file()+"/";
			}

			//print_line("file: "+name);
			recent->add_item(name,folder);
			recent->set_item_metadata( recent->get_item_count()-1,recentd[i]);
		}

		local_history.clear();
		local_history_pos=-1;
		_push_history();

		_update_favorites();
	}

	set_process_unhandled_input(true);

}

void EditorFileDialog::_thumbnail_result(const String& p_path,const Ref<Texture>& p_preview, const Variant& p_udata) {

	if (display_mode==DISPLAY_LIST || p_preview.is_null())
		return;

	for(int i=0;i<item_list->get_item_count();i++) {
		Dictionary d = item_list->get_item_metadata(i);
		String pname = d["path"];
		if (pname==p_path) {
			item_list->set_item_icon(i,p_preview);
			item_list->set_item_tag_icon(i,Ref<Texture>());
		}
	}
}

void EditorFileDialog::_thumbnail_done(const String& p_path,const Ref<Texture>& p_preview, const Variant& p_udata) {

	set_process(false);
	preview_waiting=false;

	if (p_preview.is_valid() && get_current_path()==p_path) {


		preview->set_texture(p_preview);
		if (display_mode==DISPLAY_THUMBNAILS) {
			preview_vb->hide();
		} else {
			preview_vb->show();
		}

	} else {
		preview_vb->hide();
		preview->set_texture(Ref<Texture>());

	}

}

void EditorFileDialog::_request_single_thumbnail(const String& p_path) {

	if (!FileAccess::exists(p_path))
		return;

	EditorResourcePreview::get_singleton()->queue_resource_preview(p_path,this,"_thumbnail_done",p_path);
	//print_line("want file "+p_path);
	set_process(true);
	preview_waiting=true;
	preview_wheel_timeout=0;

}

void EditorFileDialog::_action_pressed() {

	if (mode==MODE_OPEN_FILES) {


		String fbase=dir_access->get_current_dir();

		PoolVector<String> files;
		for(int i=0;i<item_list->get_item_count();i++) {
			if (item_list->is_selected(i))
				files.push_back( fbase.plus_file(item_list->get_item_text(i) ));
		}

		if (files.size()) {
			_save_to_recent();
			emit_signal("files_selected",files);
			hide();
		}

		return;
	}

	String f=dir_access->get_current_dir().plus_file(file->get_text());

	if ((mode==MODE_OPEN_ANY || mode==MODE_OPEN_FILE) && dir_access->file_exists(f)) {
		_save_to_recent();
		emit_signal("file_selected",f);
		hide();
	}else if (mode==MODE_OPEN_ANY || mode==MODE_OPEN_DIR) {

		String path=dir_access->get_current_dir();

		path=path.replace("\\","/");

		for(int i=0;i<item_list->get_item_count();i++) {
			if (item_list->is_selected(i)) {
				Dictionary d=item_list->get_item_metadata(i);
				if (d["dir"]) {
					path=path.plus_file(d["name"]);

					break;
				}
			}
		}

		_save_to_recent();
		emit_signal("dir_selected",path);
		hide();
	}

	if (mode==MODE_SAVE_FILE) {

		bool valid=false;

		if (filter->get_selected()==filter->get_item_count()-1) {
			valid=true; //match none
		} else if (filters.size()>1 && filter->get_selected()==0) {
			// match all filters
			for (int i=0;i<filters.size();i++) {

				String flt=filters[i].get_slice(";",0);
				for (int j=0;j<flt.get_slice_count(",");j++) {

					String str = flt.get_slice(",",j).strip_edges();
					if (f.match(str)) {
						valid=true;
						break;
					}
				}
				if (valid)
					break;
			}
		} else {
			int idx=filter->get_selected();
			if (filters.size()>1)
				idx--;
			if (idx>=0 && idx<filters.size()) {

				String flt=filters[idx].get_slice(";",0);
				int filterSliceCount=flt.get_slice_count(",");
				for (int j=0;j<filterSliceCount;j++) {

					String str = (flt.get_slice(",",j).strip_edges());
					if (f.match(str)) {
						valid=true;
						break;
					}
				}

				if (!valid && filterSliceCount>0) {
					String str = (flt.get_slice(",",0).strip_edges());
					f+=str.substr(1, str.length()-1);
					_request_single_thumbnail(get_current_dir().plus_file(f.get_file()));
					file->set_text(f.get_file());
					valid=true;
				}
			} else {
				valid=true;
			}
		}


		if (!valid) {

			exterr->popup_centered_minsize(Size2(250,80)*EDSCALE);
			return;

		}

		if (dir_access->file_exists(f) && !disable_overwrite_warning) {
			confirm_save->set_text(TTR("File Exists, Overwrite?"));
			confirm_save->popup_centered(Size2(200,80));
		} else {

			_save_to_recent();
			emit_signal("file_selected",f);
			hide();
		}
	}
}

void EditorFileDialog::_cancel_pressed() {

	file->set_text("");
	invalidate();
	hide();
}

void EditorFileDialog::_item_selected(int p_item) {

	int current = p_item;
	if (current<0 || current>=item_list->get_item_count())
		return;

	Dictionary d=item_list->get_item_metadata(current);

	if (!d["dir"]) {

		file->set_text(d["name"]);
		_request_single_thumbnail(get_current_dir().plus_file(get_current_file()));
	}
}

void EditorFileDialog::_push_history() {

	local_history.resize(local_history_pos+1);
	String new_path = dir_access->get_current_dir();
	if (local_history.size()==0 || new_path!=local_history[local_history_pos]) {
		local_history.push_back(new_path);
		local_history_pos++;
		dir_prev->set_disabled(local_history_pos==0);
		dir_next->set_disabled(true);
	}

}
void EditorFileDialog::_item_dc_selected(int p_item) {


	int current = p_item;
	if (current<0 || current>=item_list->get_item_count())
		return;

	Dictionary d=item_list->get_item_metadata(current);

	if (d["dir"]) {

		dir_access->change_dir(d["name"]);
		call_deferred("_update_file_list");
		call_deferred("_update_dir");

		_push_history();


	} else {

		_action_pressed();
	}
}



void EditorFileDialog::update_file_list() {


	int thumbnail_size = EditorSettings::get_singleton()->get("filesystem/file_dialog/thumbnail_size");
	thumbnail_size*=EDSCALE;
	Ref<Texture> folder_thumbnail;
	Ref<Texture> file_thumbnail;

	item_list->clear();

	if (display_mode==DISPLAY_THUMBNAILS) {

		item_list->set_max_columns(0);
		item_list->set_icon_mode(ItemList::ICON_MODE_TOP);
		item_list->set_fixed_column_width(thumbnail_size*3/2);
		item_list->set_max_text_lines(2);
		item_list->set_fixed_icon_size(Size2(thumbnail_size,thumbnail_size));

		if (!has_icon("ResizedFolder","EditorIcons")) {
			Ref<ImageTexture> folder = get_icon("FolderBig","EditorIcons");
			Image img = folder->get_data();
			img.resize(thumbnail_size,thumbnail_size);
			Ref<ImageTexture> resized_folder = Ref<ImageTexture>( memnew( ImageTexture));
			resized_folder->create_from_image(img,0);
			Theme::get_default()->set_icon("ResizedFolder","EditorIcons",resized_folder);
		}

		folder_thumbnail = get_icon("ResizedFolder","EditorIcons");

		if (!has_icon("ResizedFile","EditorIcons")) {
			Ref<ImageTexture> file = get_icon("FileBig","EditorIcons");
			Image img = file->get_data();
			img.resize(thumbnail_size,thumbnail_size);
			Ref<ImageTexture> resized_file = Ref<ImageTexture>( memnew( ImageTexture));
			resized_file->create_from_image(img,0);
			Theme::get_default()->set_icon("ResizedFile","EditorIcons",resized_file);
		}

		file_thumbnail = get_icon("ResizedFile","EditorIcons");

		preview_vb->hide();

	} else {

		item_list->set_icon_mode(ItemList::ICON_MODE_LEFT);
		item_list->set_max_columns(1);
		item_list->set_max_text_lines(1);
		item_list->set_fixed_column_width(0);
		item_list->set_fixed_icon_size(Size2());
		if (preview->get_texture().is_valid())
			preview_vb->show();

	}

	String cdir = dir_access->get_current_dir();
	bool skip_pp = access==ACCESS_RESOURCES && cdir=="res://";

	dir_access->list_dir_begin();


	Ref<Texture> folder = get_icon("folder","FileDialog");
	List<String> files;
	List<String> dirs;

	bool isdir;
	bool ishidden;
	bool show_hidden = show_hidden_files;
	String item;

	while ((item=dir_access->get_next(&isdir))!="") {

		ishidden = dir_access->current_is_hidden();

		if (show_hidden || !ishidden) {
			if (!isdir)
				files.push_back(item);
			else if (item!=".." || !skip_pp)
				dirs.push_back(item);
		}
	}

	if (dirs.find("..")==NULL) {
		//may happen if lacking permissions
		dirs.push_back("..");
	}

	dirs.sort_custom<NoCaseComparator>();
	files.sort_custom<NoCaseComparator>();

	while(!dirs.empty()) {
		const String& dir_name=dirs.front()->get();

		item_list->add_item(dir_name+"/");

		if (display_mode==DISPLAY_THUMBNAILS) {

			item_list->set_item_icon(item_list->get_item_count()-1,folder_thumbnail);
		} else {

			item_list->set_item_icon(item_list->get_item_count()-1,folder);
		}

		Dictionary d;
		d["name"]=dir_name;
		d["path"]=String();
		d["dir"]=true;

		item_list->set_item_metadata( item_list->get_item_count() -1, d);

		dirs.pop_front();
	}

	dirs.clear();

	List<String> patterns;
	// build filter
	if (filter->get_selected()==filter->get_item_count()-1) {

		// match all
	} else if (filters.size()>1 && filter->get_selected()==0) {
		// match all filters
		for (int i=0;i<filters.size();i++) {

			String f=filters[i].get_slice(";",0);
			for (int j=0;j<f.get_slice_count(",");j++) {

				patterns.push_back(f.get_slice(",",j).strip_edges());
			}
		}
	} else {
		int idx=filter->get_selected();
		if (filters.size()>1)
			idx--;

		if (idx>=0 && idx<filters.size()) {

			String f=filters[idx].get_slice(";",0);
			for (int j=0;j<f.get_slice_count(",");j++) {

				patterns.push_back(f.get_slice(",",j).strip_edges());
			}
		}
	}


	String base_dir = dir_access->get_current_dir();


	while(!files.empty()) {

		bool match=patterns.empty();

		for(List<String>::Element *E=patterns.front();E;E=E->next()) {

			if (files.front()->get().matchn(E->get())) {

				match=true;
				break;
			}
		}

		if (match) {
			//TreeItem *ti=tree->create_item(root);
			//ti->set_text(0,files.front()->get());
			item_list->add_item(files.front()->get());

			if (get_icon_func) {


				Ref<Texture> icon = get_icon_func(base_dir.plus_file(files.front()->get()));
				//ti->set_icon(0,icon);
				if (display_mode==DISPLAY_THUMBNAILS) {

					item_list->set_item_icon(item_list->get_item_count()-1,file_thumbnail);
					item_list->set_item_tag_icon(item_list->get_item_count()-1,icon);
				} else {
					item_list->set_item_icon(item_list->get_item_count()-1,icon);
				}
			}

			if (mode==MODE_OPEN_DIR) {
				//disabled mode?
				//ti->set_custom_color(0,get_color("files_disabled"));
				//ti->set_selectable(0,false);
			}
			Dictionary d;
			d["name"]=files.front()->get();
			d["dir"]=false;
			String fullpath = base_dir.plus_file(files.front()->get());

			if (display_mode==DISPLAY_THUMBNAILS) {
				EditorResourcePreview::get_singleton()->queue_resource_preview(fullpath,this,"_thumbnail_result",fullpath);
			}
			d["path"]=base_dir.plus_file(files.front()->get());
			//ti->set_metadata(0,d);
			item_list->set_item_metadata(item_list->get_item_count()-1,d);

			if (file->get_text()==files.front()->get())
				item_list->set_current(item_list->get_item_count()-1);
		}

		files.pop_front();
	}

	if (favorites->get_current()>=0) {
		favorites->unselect(favorites->get_current());
	}

	favorite->set_pressed(false);
	fav_up->set_disabled(true);
	fav_down->set_disabled(true);
	for(int i=0;i<favorites->get_item_count();i++) {
		if (favorites->get_item_metadata(i)==base_dir) {
			favorites->select(i);
			favorite->set_pressed(true);
			if (i>0) {
				fav_up->set_disabled(false);
			}
			if (i<favorites->get_item_count()-1) {
				fav_down->set_disabled(false);
			}
			break;
		}

	}
	// ??
	//if (tree->get_root() && tree->get_root()->get_children())
	//	tree->get_root()->get_children()->select(0);

	files.clear();

}

void EditorFileDialog::_filter_selected(int) {

	update_file_list();
}

void EditorFileDialog::update_filters() {

	filter->clear();

	if (filters.size()>1) {
		String all_filters;

		const int max_filters=5;

		for(int i=0;i<MIN( max_filters, filters.size()) ;i++) {
			String flt=filters[i].get_slice(";",0);
			if (i>0)
				all_filters+=",";
			all_filters+=flt;
		}

		if (max_filters<filters.size())
			all_filters+=", ...";

		filter->add_item(TTR("All Recognized")+" ( "+all_filters+" )");
	}
	for(int i=0;i<filters.size();i++) {

		String flt=filters[i].get_slice(";",0).strip_edges();
		String desc=filters[i].get_slice(";",1).strip_edges();
		if (desc.length())
			filter->add_item(desc+" ( "+flt+" )");
		else
			filter->add_item("( "+flt+" )");
	}

	filter->add_item(TTR("All Files (*)"));

}

void EditorFileDialog::clear_filters() {

	filters.clear();
	update_filters();
	invalidate();
}
void EditorFileDialog::add_filter(const String& p_filter) {

	filters.push_back(p_filter);
	update_filters();
	invalidate();

}

String EditorFileDialog::get_current_dir() const {

	return dir->get_text();
}
String EditorFileDialog::get_current_file() const {

	return file->get_text();
}
String EditorFileDialog::get_current_path() const {

	return dir->get_text().plus_file(file->get_text());
}
void EditorFileDialog::set_current_dir(const String& p_dir) {

	dir_access->change_dir(p_dir);
	update_dir();
	invalidate();
	//_push_history();


}
void EditorFileDialog::set_current_file(const String& p_file) {

	file->set_text(p_file);
	update_dir();
	invalidate();
	int lp = p_file.find_last(".");
	if (lp!=-1) {
		file->select(0,lp);
		file->grab_focus();
	}

	if (is_visible())
		_request_single_thumbnail(get_current_dir().plus_file(get_current_file()));


}
void EditorFileDialog::set_current_path(const String& p_path) {

	if (!p_path.size())
		return;
	int pos=MAX( p_path.find_last("/"), p_path.find_last("\\") );
	if (pos==-1) {

		set_current_file(p_path);
	} else {

		String dir=p_path.substr(0,pos);
		String file=p_path.substr(pos+1,p_path.length());
		set_current_dir(dir);
		set_current_file(file);
	}
}


void EditorFileDialog::set_mode(Mode p_mode) {

	mode=p_mode;
	switch(mode) {

		case MODE_OPEN_FILE: get_ok()->set_text(TTR("Open")); set_title("Open a File"); makedir->hide(); break;
		case MODE_OPEN_FILES: get_ok()->set_text(TTR("Open")); set_title("Open File(s)"); makedir->hide(); break;
		case MODE_OPEN_DIR: get_ok()->set_text(TTR("Open")); set_title("Open a Directory"); makedir->show(); break;
		case MODE_OPEN_ANY: get_ok()->set_text(TTR("Open")); set_title("Open a File or Directory"); makedir->show(); break;
		case MODE_SAVE_FILE: get_ok()->set_text(TTR("Save")); set_title("Save a File"); makedir->show(); break;
	}

	if (mode==MODE_OPEN_FILES) {
		item_list->set_select_mode(ItemList::SELECT_MULTI);
	} else {
		item_list->set_select_mode(ItemList::SELECT_SINGLE);
	}
}

EditorFileDialog::Mode EditorFileDialog::get_mode() const {

	return mode;
}

void EditorFileDialog::set_access(Access p_access) {

	ERR_FAIL_INDEX(p_access,3);
	if (access==p_access)
		return;
	memdelete( dir_access );
	switch(p_access) {
		case ACCESS_FILESYSTEM: {

			dir_access = DirAccess::create(DirAccess::ACCESS_FILESYSTEM);
		} break;
		case ACCESS_RESOURCES: {

			dir_access = DirAccess::create(DirAccess::ACCESS_RESOURCES);
		} break;
		case ACCESS_USERDATA: {

			dir_access = DirAccess::create(DirAccess::ACCESS_USERDATA);
		} break;
	}
	access=p_access;
	_update_drives();
	invalidate();
	update_filters();
	update_dir();
}

void EditorFileDialog::invalidate() {

	if (is_visible()) {
		update_file_list();
		invalidated=false;
	} else {
		invalidated=true;
	}

}

EditorFileDialog::Access EditorFileDialog::get_access() const{

	return access;
}

void EditorFileDialog::_make_dir_confirm() {

	Error err = dir_access->make_dir( makedirname->get_text() );
	if (err==OK) {
		dir_access->change_dir(makedirname->get_text());
		invalidate();
		update_filters();
		update_dir();
		_push_history();

	} else {
		mkdirerr->popup_centered_minsize(Size2(250,50)*EDSCALE);
	}
	makedirname->set_text(""); // reset label
}


void EditorFileDialog::_make_dir() {

	makedialog->popup_centered_minsize(Size2(250,80)*EDSCALE);
	makedirname->grab_focus();

}

void EditorFileDialog::_select_drive(int p_idx) {

	String d = drives->get_item_text(p_idx);
	dir_access->change_dir(d);
	file->set_text("");
	invalidate();
	update_dir();
	_push_history();


}

void EditorFileDialog::_update_drives() {


	int dc = dir_access->get_drive_count();
	if (dc==0 || access!=ACCESS_FILESYSTEM) {
		drives->hide();
	} else {
		drives->clear();
		drives->show();

		for(int i=0;i<dir_access->get_drive_count();i++) {
			String d = dir_access->get_drive(i);
			drives->add_item(dir_access->get_drive(i));
		}

		drives->select(dir_access->get_current_drive());

	}
}


void EditorFileDialog::_favorite_selected(int p_idx) {

	Vector<String> favorited = EditorSettings::get_singleton()->get_favorite_dirs();
	ERR_FAIL_INDEX(p_idx,favorited.size());

	dir_access->change_dir(favorited[p_idx]);
	file->set_text("");
	invalidate();
	update_dir();
	_push_history();
}

void EditorFileDialog::_favorite_move_up(){

	int current = favorites->get_current();

	if (current>0 && current<favorites->get_item_count()) {
		Vector<String> favorited = EditorSettings::get_singleton()->get_favorite_dirs();

		int a_idx=favorited.find(String(favorites->get_item_metadata(current-1)));
		int b_idx=favorited.find(String(favorites->get_item_metadata(current)));

		if (a_idx==-1 || b_idx==-1)
			return;
		SWAP(favorited[a_idx],favorited[b_idx]);

		EditorSettings::get_singleton()->set_favorite_dirs(favorited);

		_update_favorites();
		update_file_list();

	}
}
void EditorFileDialog::_favorite_move_down(){

	int current = favorites->get_current();

	if (current>=0 && current<favorites->get_item_count()-1) {
		Vector<String> favorited = EditorSettings::get_singleton()->get_favorite_dirs();

		int a_idx=favorited.find(String(favorites->get_item_metadata(current+1)));
		int b_idx=favorited.find(String(favorites->get_item_metadata(current)));

		if (a_idx==-1 || b_idx==-1)
			return;
		SWAP(favorited[a_idx],favorited[b_idx]);

		EditorSettings::get_singleton()->set_favorite_dirs(favorited);

		_update_favorites();
		update_file_list();

	}
}


void EditorFileDialog::_update_favorites() {

	bool res = access==ACCESS_RESOURCES;

	String current = get_current_dir();
	Ref<Texture> star = get_icon("Favorites","EditorIcons");
	favorites->clear();

	favorite->set_pressed(false);


	Vector<String> favorited = EditorSettings::get_singleton()->get_favorite_dirs();
	for(int i=0;i<favorited.size();i++) {
		bool cres = favorited[i].begins_with("res://");
		if (cres!=res)
			continue;
		String name = favorited[i];

		bool setthis = name==current;

		if (res && name=="res://") {
			name="/";
		} else {
			name=name.get_file()+"/";
		}


		//print_line("file: "+name);
		favorites->add_item(name,star);
		favorites->set_item_metadata( favorites->get_item_count()-1,favorited[i]);

		if (setthis) {
			favorite->set_pressed(true);
			favorites->set_current(favorites->get_item_count()-1);
		}
	}


}

void EditorFileDialog::_favorite_toggled(bool p_toggle) {
	bool res = access==ACCESS_RESOURCES;

	String cd = get_current_dir();

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

	bool found = false;
	for(int i=0;i<favorited.size();i++) {
		bool cres = favorited[i].begins_with("res://");
		if (cres!=res)
			continue;

		if (favorited[i]==cd) {
			found=true;
			break;
		}
	}

	if (found) {
		favorited.erase(cd);
		favorite->set_pressed(false);
	} else {
		favorited.push_back(cd);
		favorite->set_pressed(true);
	}

	EditorSettings::get_singleton()->set_favorite_dirs(favorited);

	_update_favorites();

}

void EditorFileDialog::_recent_selected(int p_idx) {

	Vector<String> recentd = EditorSettings::get_singleton()->get_recent_dirs();
	ERR_FAIL_INDEX(p_idx,recentd.size());

	dir_access->change_dir(recent->get_item_metadata(p_idx));
	update_file_list();
	update_dir();
	_push_history();
}

void EditorFileDialog::_go_up() {

	dir_access->change_dir("..");
	update_file_list();
	update_dir();
	_push_history();

}

void EditorFileDialog::_go_back(){

	if (local_history_pos<=0) {
		return;
	}

	local_history_pos--;
	dir_access->change_dir(local_history[local_history_pos]);
	update_file_list();
	update_dir();

	dir_prev->set_disabled(local_history_pos==0);
	dir_next->set_disabled(local_history_pos==local_history.size()-1);
}
void EditorFileDialog::_go_forward(){

	if (local_history_pos==local_history.size()-1) {
		return;
	}

	local_history_pos++;
	dir_access->change_dir(local_history[local_history_pos]);
	update_file_list();
	update_dir();

	dir_prev->set_disabled(local_history_pos==0);
	dir_next->set_disabled(local_history_pos==local_history.size()-1);

}

bool EditorFileDialog::default_show_hidden_files=false;

EditorFileDialog::DisplayMode EditorFileDialog::default_display_mode=DISPLAY_THUMBNAILS;

void EditorFileDialog::set_display_mode(DisplayMode p_mode) {

	if (display_mode==p_mode)
		return;
	if (p_mode==DISPLAY_THUMBNAILS) {
		mode_list->set_pressed(false);
		mode_thumbnails->set_pressed(true);
	} else {
		mode_thumbnails->set_pressed(false);
		mode_list->set_pressed(true);
	}
	display_mode=p_mode;
	invalidate();;
}

EditorFileDialog::DisplayMode EditorFileDialog::get_display_mode() const{

	return display_mode;
}



void EditorFileDialog::_bind_methods() {

	ClassDB::bind_method(_MD("_unhandled_input"),&EditorFileDialog::_unhandled_input);

	ClassDB::bind_method(_MD("_item_selected"),&EditorFileDialog::_item_selected);
	ClassDB::bind_method(_MD("_item_db_selected"),&EditorFileDialog::_item_dc_selected);
	ClassDB::bind_method(_MD("_dir_entered"),&EditorFileDialog::_dir_entered);
	ClassDB::bind_method(_MD("_file_entered"),&EditorFileDialog::_file_entered);
	ClassDB::bind_method(_MD("_action_pressed"),&EditorFileDialog::_action_pressed);
	ClassDB::bind_method(_MD("_cancel_pressed"),&EditorFileDialog::_cancel_pressed);
	ClassDB::bind_method(_MD("_filter_selected"),&EditorFileDialog::_filter_selected);
	ClassDB::bind_method(_MD("_save_confirm_pressed"),&EditorFileDialog::_save_confirm_pressed);

	ClassDB::bind_method(_MD("clear_filters"),&EditorFileDialog::clear_filters);
	ClassDB::bind_method(_MD("add_filter","filter"),&EditorFileDialog::add_filter);
	ClassDB::bind_method(_MD("get_current_dir"),&EditorFileDialog::get_current_dir);
	ClassDB::bind_method(_MD("get_current_file"),&EditorFileDialog::get_current_file);
	ClassDB::bind_method(_MD("get_current_path"),&EditorFileDialog::get_current_path);
	ClassDB::bind_method(_MD("set_current_dir","dir"),&EditorFileDialog::set_current_dir);
	ClassDB::bind_method(_MD("set_current_file","file"),&EditorFileDialog::set_current_file);
	ClassDB::bind_method(_MD("set_current_path","path"),&EditorFileDialog::set_current_path);
	ClassDB::bind_method(_MD("set_mode","mode"),&EditorFileDialog::set_mode);
	ClassDB::bind_method(_MD("get_mode"),&EditorFileDialog::get_mode);
	ClassDB::bind_method(_MD("get_vbox:VBoxContainer"),&EditorFileDialog::get_vbox);
	ClassDB::bind_method(_MD("set_access","access"),&EditorFileDialog::set_access);
	ClassDB::bind_method(_MD("get_access"),&EditorFileDialog::get_access);
	ClassDB::bind_method(_MD("set_show_hidden_files","show"),&EditorFileDialog::set_show_hidden_files);
	ClassDB::bind_method(_MD("is_showing_hidden_files"),&EditorFileDialog::is_showing_hidden_files);
	ClassDB::bind_method(_MD("_select_drive"),&EditorFileDialog::_select_drive);
	ClassDB::bind_method(_MD("_make_dir"),&EditorFileDialog::_make_dir);
	ClassDB::bind_method(_MD("_make_dir_confirm"),&EditorFileDialog::_make_dir_confirm);
	ClassDB::bind_method(_MD("_update_file_list"),&EditorFileDialog::update_file_list);
	ClassDB::bind_method(_MD("_update_dir"),&EditorFileDialog::update_dir);
	ClassDB::bind_method(_MD("_thumbnail_done"),&EditorFileDialog::_thumbnail_done);
	ClassDB::bind_method(_MD("set_display_mode","mode"),&EditorFileDialog::set_display_mode);
	ClassDB::bind_method(_MD("get_display_mode"),&EditorFileDialog::get_display_mode);
	ClassDB::bind_method(_MD("_thumbnail_result"),&EditorFileDialog::_thumbnail_result);
	ClassDB::bind_method(_MD("set_disable_overwrite_warning","disable"),&EditorFileDialog::set_disable_overwrite_warning);
	ClassDB::bind_method(_MD("is_overwrite_warning_disabled"),&EditorFileDialog::is_overwrite_warning_disabled);

	ClassDB::bind_method(_MD("_recent_selected"),&EditorFileDialog::_recent_selected);
	ClassDB::bind_method(_MD("_go_back"),&EditorFileDialog::_go_back);
	ClassDB::bind_method(_MD("_go_forward"),&EditorFileDialog::_go_forward);
	ClassDB::bind_method(_MD("_go_up"),&EditorFileDialog::_go_up);

	ClassDB::bind_method(_MD("_favorite_toggled"),&EditorFileDialog::_favorite_toggled);
	ClassDB::bind_method(_MD("_favorite_selected"),&EditorFileDialog::_favorite_selected);
	ClassDB::bind_method(_MD("_favorite_move_up"),&EditorFileDialog::_favorite_move_up);
	ClassDB::bind_method(_MD("_favorite_move_down"),&EditorFileDialog::_favorite_move_down);

	ClassDB::bind_method(_MD("invalidate"),&EditorFileDialog::invalidate);

	ADD_SIGNAL(MethodInfo("file_selected",PropertyInfo( Variant::STRING,"path")));
	ADD_SIGNAL(MethodInfo("files_selected",PropertyInfo( Variant::POOL_STRING_ARRAY,"paths")));
	ADD_SIGNAL(MethodInfo("dir_selected",PropertyInfo( Variant::STRING,"dir")));

	BIND_CONSTANT( MODE_OPEN_FILE );
	BIND_CONSTANT( MODE_OPEN_FILES );
	BIND_CONSTANT( MODE_OPEN_DIR );
	BIND_CONSTANT( MODE_OPEN_ANY );
	BIND_CONSTANT( MODE_SAVE_FILE );

	BIND_CONSTANT( ACCESS_RESOURCES );
	BIND_CONSTANT( ACCESS_USERDATA );
	BIND_CONSTANT( ACCESS_FILESYSTEM );

}


void EditorFileDialog::set_show_hidden_files(bool p_show) {
	show_hidden_files=p_show;
	invalidate();
}

bool EditorFileDialog::is_showing_hidden_files() const {
	return show_hidden_files;
}

void EditorFileDialog::set_default_show_hidden_files(bool p_show) {
	default_show_hidden_files=p_show;
}

void EditorFileDialog::set_default_display_mode(DisplayMode p_mode) {
	default_display_mode=p_mode;
}

void EditorFileDialog::_save_to_recent() {

	String dir = get_current_dir();
	Vector<String> recent = EditorSettings::get_singleton()->get_recent_dirs();

	const int max=20;
	int count=0;
	bool res=dir.begins_with("res://");

	for(int i=0;i<recent.size();i++) {
		bool cres=recent[i].begins_with("res://");
		if (recent[i]==dir || (res==cres && count>max)) {
			recent.remove(i);
			i--;
		} else {
			count++;
		}
	}

	recent.insert(0,dir);

	EditorSettings::get_singleton()->set_recent_dirs(recent);


}

void EditorFileDialog::set_disable_overwrite_warning(bool p_disable) {

	disable_overwrite_warning=p_disable;
}

bool EditorFileDialog::is_overwrite_warning_disabled() const{

	return disable_overwrite_warning;
}


EditorFileDialog::EditorFileDialog() {

	show_hidden_files=default_show_hidden_files;
	display_mode=default_display_mode;
	local_history_pos=0;
	disable_overwrite_warning=false;
	VBoxContainer *vbc = memnew( VBoxContainer );
	add_child(vbc);

	mode=MODE_SAVE_FILE;
	set_title(TTR("Save a File"));

	ED_SHORTCUT("file_dialog/go_back", TTR("Go Back"), KEY_MASK_ALT|KEY_LEFT);
	ED_SHORTCUT("file_dialog/go_forward", TTR("Go Forward"), KEY_MASK_ALT|KEY_RIGHT);
	ED_SHORTCUT("file_dialog/go_up", TTR("Go Up"), KEY_MASK_ALT|KEY_UP);
	ED_SHORTCUT("file_dialog/refresh", TTR("Refresh"), KEY_F5);
	ED_SHORTCUT("file_dialog/toggle_hidden_files", TTR("Toggle Hidden Files"), KEY_MASK_CMD|KEY_H);
	ED_SHORTCUT("file_dialog/toggle_favorite", TTR("Toggle Favorite"), KEY_MASK_ALT|KEY_F);
	ED_SHORTCUT("file_dialog/toggle_mode", TTR("Toggle Mode"), KEY_MASK_ALT|KEY_V);
	ED_SHORTCUT("file_dialog/create_folder", TTR("Create Folder"), KEY_MASK_CMD|KEY_N);
	ED_SHORTCUT("file_dialog/focus_path", TTR("Focus Path"), KEY_MASK_CMD|KEY_D);
	ED_SHORTCUT("file_dialog/move_favorite_up", TTR("Move Favorite Up"), KEY_MASK_CMD|KEY_UP);
	ED_SHORTCUT("file_dialog/move_favorite_down", TTR("Move Favorite Down"), KEY_MASK_CMD|KEY_DOWN);

	HBoxContainer *pathhb = memnew( HBoxContainer );

	dir_prev = memnew( ToolButton );
	dir_next = memnew( ToolButton );
	dir_up = memnew( ToolButton );

	pathhb->add_child(dir_prev);
	pathhb->add_child(dir_next);
	pathhb->add_child(dir_up);

	dir_prev->connect("pressed",this,"_go_back");
	dir_next->connect("pressed",this,"_go_forward");
	dir_up->connect("pressed",this,"_go_up");

	dir = memnew(LineEdit);
	pathhb->add_child(dir);
	dir->set_h_size_flags(SIZE_EXPAND_FILL);

	refresh = memnew( ToolButton );
	refresh->connect("pressed",this,"_update_file_list");
	pathhb->add_child(refresh);

	favorite = memnew( ToolButton );
	favorite->set_toggle_mode(true);
	favorite->connect("toggled",this,"_favorite_toggled");
	pathhb->add_child(favorite);

	mode_thumbnails = memnew( ToolButton );
	mode_thumbnails->connect("pressed",this,"set_display_mode",varray(DISPLAY_THUMBNAILS));
	mode_thumbnails->set_toggle_mode(true);
	mode_thumbnails->set_pressed(display_mode==DISPLAY_THUMBNAILS);
	pathhb->add_child(mode_thumbnails);

	mode_list = memnew( ToolButton );
	mode_list->connect("pressed",this,"set_display_mode",varray(DISPLAY_LIST));
	mode_list->set_toggle_mode(true);
	mode_list->set_pressed(display_mode==DISPLAY_LIST);
	pathhb->add_child(mode_list);

	drives = memnew( OptionButton );
	pathhb->add_child(drives);
	drives->connect("item_selected",this,"_select_drive");

	makedir = memnew( Button );
	makedir->set_text(TTR("Create Folder"));
	makedir->connect("pressed",this,"_make_dir");
	pathhb->add_child(makedir);

	list_hb = memnew( HBoxContainer );

	vbc->add_margin_child(TTR("Path:"),pathhb);
	vbc->add_child(list_hb);
	list_hb->set_v_size_flags(SIZE_EXPAND_FILL);

	VBoxContainer *fav_vb = memnew( VBoxContainer );
	list_hb->add_child(fav_vb);
	HBoxContainer *fav_hb = memnew( HBoxContainer );
	fav_vb->add_child(fav_hb);
	fav_hb->add_child(memnew(Label(TTR("Favorites:"))));
	fav_hb->add_spacer();
	fav_up = memnew( ToolButton );
	fav_hb->add_child(fav_up);
	fav_up->connect("pressed",this,"_favorite_move_up");
	fav_down = memnew( ToolButton );
	fav_hb->add_child(fav_down);
	fav_down->connect("pressed",this,"_favorite_move_down");
	fav_rm = memnew( ToolButton );
	fav_hb->add_child(fav_rm);
	fav_rm->hide(); // redundant

	MarginContainer *fav_mv = memnew( MarginContainer );
	fav_vb->add_child(fav_mv);
	fav_mv->set_v_size_flags(SIZE_EXPAND_FILL);
	favorites = memnew( ItemList );
	fav_mv->add_child(favorites);
	favorites->connect("item_selected",this,"_favorite_selected");

	recent = memnew( ItemList );
	fav_vb->add_margin_child(TTR("Recent:"),recent,true);
	recent->connect("item_selected",this,"_recent_selected");

	VBoxContainer *item_vb = memnew( VBoxContainer );
	list_hb->add_child(item_vb);
	item_vb->set_h_size_flags(SIZE_EXPAND_FILL);

	item_list = memnew( ItemList );
	item_list->set_v_size_flags(SIZE_EXPAND_FILL);
	item_vb->add_margin_child(TTR("Directories & Files:"),item_list,true);

	HBoxContainer* filter_hb = memnew( HBoxContainer );
	item_vb->add_child(filter_hb);

	VBoxContainer *filter_vb = memnew( VBoxContainer );
	filter_hb->add_child(filter_vb);
	filter_vb->set_h_size_flags(SIZE_EXPAND_FILL);

	preview_vb = memnew( VBoxContainer );
	filter_hb->add_child(preview_vb);
	CenterContainer *prev_cc = memnew( CenterContainer );
	preview_vb->add_margin_child(TTR("Preview:"),prev_cc);
	preview = memnew( TextureFrame );
	prev_cc->add_child(preview);
	preview_vb->hide();


	file = memnew(LineEdit);
	//add_child(file);
	filter_vb->add_margin_child(TTR("File:"),file);


	filter = memnew( OptionButton );
	//add_child(filter);
	filter_vb->add_margin_child(TTR("Filter:"),filter);
	filter->set_clip_text(true);//too many extensions overflow it

	dir_access = DirAccess::create(DirAccess::ACCESS_RESOURCES);
	access=ACCESS_RESOURCES;
	_update_drives();


	connect("confirmed", this,"_action_pressed");
	//cancel->connect("pressed", this,"_cancel_pressed");
	item_list->connect("item_selected", this,"_item_selected",varray(),CONNECT_DEFERRED);
	item_list->connect("item_activated", this,"_item_db_selected",varray());
	dir->connect("text_entered", this,"_dir_entered");
	file->connect("text_entered", this,"_file_entered");
	filter->connect("item_selected", this,"_filter_selected");


	confirm_save = memnew( ConfirmationDialog );
	confirm_save->set_as_toplevel(true);
	add_child(confirm_save);


	confirm_save->connect("confirmed", this,"_save_confirm_pressed");

	makedialog = memnew( ConfirmationDialog );
	makedialog->set_title(TTR("Create Folder"));
	VBoxContainer *makevb= memnew( VBoxContainer );
	makedialog->add_child(makevb);

	makedirname = memnew( LineEdit );
	makevb->add_margin_child(TTR("Name:"),makedirname);
	add_child(makedialog);
	makedialog->register_text_enter(makedirname);
	makedialog->connect("confirmed",this,"_make_dir_confirm");
	mkdirerr = memnew( AcceptDialog );
	mkdirerr->set_text(TTR("Could not create folder."));
	add_child(mkdirerr);

	exterr = memnew( AcceptDialog );
	exterr->set_text(TTR("Must use a valid extension."));
	add_child(exterr);


	//update_file_list();
	update_filters();
	update_dir();

	set_hide_on_ok(false);
	vbox=vbc;


	invalidated=true;
	if (register_func)
		register_func(this);

	preview_wheel_timeout=0;
	preview_wheel_index=0;
	preview_waiting=false;

}


EditorFileDialog::~EditorFileDialog() {

	if (unregister_func)
		unregister_func(this);
	memdelete(dir_access);
}


void EditorLineEditFileChooser::_bind_methods() {

	ClassDB::bind_method(_MD("_browse"),&EditorLineEditFileChooser::_browse);
	ClassDB::bind_method(_MD("_chosen"),&EditorLineEditFileChooser::_chosen);
	ClassDB::bind_method(_MD("get_button:Button"),&EditorLineEditFileChooser::get_button);
	ClassDB::bind_method(_MD("get_line_edit:LineEdit"),&EditorLineEditFileChooser::get_line_edit);
	ClassDB::bind_method(_MD("get_file_dialog:EditorFileDialog"),&EditorLineEditFileChooser::get_file_dialog);

}

void EditorLineEditFileChooser::_chosen(const String& p_text){

	line_edit->set_text(p_text);
	line_edit->emit_signal("text_entered",p_text);
}

void EditorLineEditFileChooser::_browse() {

	dialog->popup_centered_ratio();
}

EditorLineEditFileChooser::EditorLineEditFileChooser() {

	line_edit = memnew( LineEdit );
	add_child(line_edit);
	line_edit->set_h_size_flags(SIZE_EXPAND_FILL);
	button = memnew( Button );
	button->set_text(" .. ");
	add_child(button);
	button->connect("pressed",this,"_browse");
	dialog = memnew( EditorFileDialog);
	add_child(dialog);
	dialog->connect("file_selected",this,"_chosen");
	dialog->connect("dir_selected",this,"_chosen");
	dialog->connect("files_selected",this,"_chosen");


}