godot/editor/export_template_manager.cpp
Rémi Verschelde fdf58a5858 Rename InputFilter back to Input
It changed name as part of the DisplayServer and input refactoring
in #37317, with the rationale that input no longer goes through the
main loop, so the previous Input singleton now only does filtering.

But the gains in consistency are quite limited in the renaming, and
it breaks compatibility for all scripts and tutorials that access
the Input singleton via the scripting language. A temporary option
was suggested to keep the scripting singleton named `Input` even if
its type is `InputFilter`, but that adds inconsistency and breaks C#.

Fixes godotengine/godot-proposals#639.
Fixes #37319.
Fixes #37690.
2020-04-28 15:19:49 +02:00

728 lines
24 KiB
C++

/*************************************************************************/
/* export_template_manager.cpp */
/*************************************************************************/
/* This file is part of: */
/* GODOT ENGINE */
/* https://godotengine.org */
/*************************************************************************/
/* Copyright (c) 2007-2020 Juan Linietsky, Ariel Manzur. */
/* Copyright (c) 2014-2020 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 "export_template_manager.h"
#include "core/input/input.h"
#include "core/io/json.h"
#include "core/io/zip_io.h"
#include "core/os/dir_access.h"
#include "core/os/keyboard.h"
#include "core/version.h"
#include "editor_node.h"
#include "editor_scale.h"
#include "progress_dialog.h"
#include "scene/gui/link_button.h"
void ExportTemplateManager::_update_template_list() {
while (current_hb->get_child_count()) {
memdelete(current_hb->get_child(0));
}
while (installed_vb->get_child_count()) {
memdelete(installed_vb->get_child(0));
}
DirAccess *d = DirAccess::create(DirAccess::ACCESS_FILESYSTEM);
Error err = d->change_dir(EditorSettings::get_singleton()->get_templates_dir());
Set<String> templates;
d->list_dir_begin();
if (err == OK) {
String c = d->get_next();
while (c != String()) {
if (d->current_is_dir() && !c.begins_with(".")) {
templates.insert(c);
}
c = d->get_next();
}
}
d->list_dir_end();
memdelete(d);
String current_version = VERSION_FULL_CONFIG;
// Downloadable export templates are only available for stable and official alpha/beta/RC builds
// (which always have a number following their status, e.g. "alpha1").
// Therefore, don't display download-related features when using a development version
// (whose builds aren't numbered).
const bool downloads_available =
String(VERSION_STATUS) != String("dev") &&
String(VERSION_STATUS) != String("alpha") &&
String(VERSION_STATUS) != String("beta") &&
String(VERSION_STATUS) != String("rc");
Label *current = memnew(Label);
current->set_h_size_flags(Control::SIZE_EXPAND_FILL);
current_hb->add_child(current);
if (templates.has(current_version)) {
current->add_theme_color_override("font_color", current->get_theme_color("success_color", "Editor"));
// Only display a redownload button if it can be downloaded in the first place
if (downloads_available) {
Button *redownload = memnew(Button);
redownload->set_text(TTR("Redownload"));
current_hb->add_child(redownload);
redownload->connect("pressed", callable_mp(this, &ExportTemplateManager::_download_template), varray(current_version));
}
Button *uninstall = memnew(Button);
uninstall->set_text(TTR("Uninstall"));
current_hb->add_child(uninstall);
current->set_text(current_version + " " + TTR("(Installed)"));
uninstall->connect("pressed", callable_mp(this, &ExportTemplateManager::_uninstall_template), varray(current_version));
} else {
current->add_theme_color_override("font_color", current->get_theme_color("error_color", "Editor"));
Button *redownload = memnew(Button);
redownload->set_text(TTR("Download"));
if (!downloads_available) {
redownload->set_disabled(true);
redownload->set_tooltip(TTR("Official export templates aren't available for development builds."));
}
redownload->connect("pressed", callable_mp(this, &ExportTemplateManager::_download_template), varray(current_version));
current_hb->add_child(redownload);
current->set_text(current_version + " " + TTR("(Missing)"));
}
for (Set<String>::Element *E = templates.back(); E; E = E->prev()) {
HBoxContainer *hbc = memnew(HBoxContainer);
Label *version = memnew(Label);
version->set_modulate(current->get_theme_color("disabled_font_color", "Editor"));
String text = E->get();
if (text == current_version) {
text += " " + TTR("(Current)");
}
version->set_text(text);
version->set_h_size_flags(Control::SIZE_EXPAND_FILL);
hbc->add_child(version);
Button *uninstall = memnew(Button);
uninstall->set_text(TTR("Uninstall"));
hbc->add_child(uninstall);
uninstall->connect("pressed", callable_mp(this, &ExportTemplateManager::_uninstall_template), varray(E->get()));
installed_vb->add_child(hbc);
}
}
void ExportTemplateManager::_download_template(const String &p_version) {
while (template_list->get_child_count()) {
memdelete(template_list->get_child(0));
}
template_downloader->popup_centered();
template_list_state->set_text(TTR("Retrieving mirrors, please wait..."));
template_download_progress->set_max(100);
template_download_progress->set_value(0);
request_mirror->request("https://godotengine.org/mirrorlist/" + p_version + ".json");
template_list_state->show();
template_download_progress->show();
}
void ExportTemplateManager::_uninstall_template(const String &p_version) {
remove_confirm->set_text(vformat(TTR("Remove template version '%s'?"), p_version));
remove_confirm->popup_centered();
to_remove = p_version;
}
void ExportTemplateManager::_uninstall_template_confirm() {
DirAccessRef da = DirAccess::create(DirAccess::ACCESS_FILESYSTEM);
const String &templates_dir = EditorSettings::get_singleton()->get_templates_dir();
Error err = da->change_dir(templates_dir);
ERR_FAIL_COND_MSG(err != OK, "Could not access templates directory at '" + templates_dir + "'.");
err = da->change_dir(to_remove);
ERR_FAIL_COND_MSG(err != OK, "Could not access templates directory at '" + templates_dir.plus_file(to_remove) + "'.");
err = da->erase_contents_recursive();
ERR_FAIL_COND_MSG(err != OK, "Could not remove all templates in '" + templates_dir.plus_file(to_remove) + "'.");
da->change_dir("..");
err = da->remove(to_remove);
ERR_FAIL_COND_MSG(err != OK, "Could not remove templates directory at '" + templates_dir.plus_file(to_remove) + "'.");
_update_template_list();
}
bool ExportTemplateManager::_install_from_file(const String &p_file, bool p_use_progress) {
// unzClose() will take care of closing the file stored in the unzFile,
// so we don't need to `memdelete(fa)` in this method.
FileAccess *fa = nullptr;
zlib_filefunc_def io = zipio_create_io_from_file(&fa);
unzFile pkg = unzOpen2(p_file.utf8().get_data(), &io);
if (!pkg) {
EditorNode::get_singleton()->show_warning(TTR("Can't open export templates zip."));
return false;
}
int ret = unzGoToFirstFile(pkg);
int fc = 0; //count them and find version
String version;
String contents_dir;
while (ret == UNZ_OK) {
unz_file_info info;
char fname[16384];
ret = unzGetCurrentFileInfo(pkg, &info, fname, 16384, nullptr, 0, nullptr, 0);
String file = fname;
if (file.ends_with("version.txt")) {
Vector<uint8_t> data;
data.resize(info.uncompressed_size);
//read
unzOpenCurrentFile(pkg);
ret = unzReadCurrentFile(pkg, data.ptrw(), data.size());
unzCloseCurrentFile(pkg);
String data_str;
data_str.parse_utf8((const char *)data.ptr(), data.size());
data_str = data_str.strip_edges();
// Version number should be of the form major.minor[.patch].status[.module_config]
// so it can in theory have 3 or more slices.
if (data_str.get_slice_count(".") < 3) {
EditorNode::get_singleton()->show_warning(vformat(TTR("Invalid version.txt format inside templates: %s."), data_str));
unzClose(pkg);
return false;
}
version = data_str;
contents_dir = file.get_base_dir().trim_suffix("/").trim_suffix("\\");
}
if (file.get_file().size() != 0) {
fc++;
}
ret = unzGoToNextFile(pkg);
}
if (version == String()) {
EditorNode::get_singleton()->show_warning(TTR("No version.txt found inside templates."));
unzClose(pkg);
return false;
}
String template_path = EditorSettings::get_singleton()->get_templates_dir().plus_file(version);
DirAccessRef d = DirAccess::create(DirAccess::ACCESS_FILESYSTEM);
Error err = d->make_dir_recursive(template_path);
if (err != OK) {
EditorNode::get_singleton()->show_warning(TTR("Error creating path for templates:") + "\n" + template_path);
unzClose(pkg);
return false;
}
ret = unzGoToFirstFile(pkg);
EditorProgress *p = nullptr;
if (p_use_progress) {
p = memnew(EditorProgress("ltask", TTR("Extracting Export Templates"), fc));
}
fc = 0;
while (ret == UNZ_OK) {
//get filename
unz_file_info info;
char fname[16384];
unzGetCurrentFileInfo(pkg, &info, fname, 16384, nullptr, 0, nullptr, 0);
String file_path(String(fname).simplify_path());
String file = file_path.get_file();
if (file.size() == 0) {
ret = unzGoToNextFile(pkg);
continue;
}
Vector<uint8_t> data;
data.resize(info.uncompressed_size);
//read
unzOpenCurrentFile(pkg);
unzReadCurrentFile(pkg, data.ptrw(), data.size());
unzCloseCurrentFile(pkg);
String base_dir = file_path.get_base_dir().trim_suffix("/");
if (base_dir != contents_dir && base_dir.begins_with(contents_dir)) {
base_dir = base_dir.substr(contents_dir.length(), file_path.length()).trim_prefix("/");
file = base_dir.plus_file(file);
DirAccessRef da = DirAccess::create(DirAccess::ACCESS_FILESYSTEM);
ERR_CONTINUE(!da);
String output_dir = template_path.plus_file(base_dir);
if (!DirAccess::exists(output_dir)) {
Error mkdir_err = da->make_dir_recursive(output_dir);
ERR_CONTINUE(mkdir_err != OK);
}
}
if (p) {
p->step(TTR("Importing:") + " " + file, fc);
}
String to_write = template_path.plus_file(file);
FileAccessRef f = FileAccess::open(to_write, FileAccess::WRITE);
if (!f) {
ret = unzGoToNextFile(pkg);
fc++;
ERR_CONTINUE_MSG(true, "Can't open file from path '" + String(to_write) + "'.");
}
f->store_buffer(data.ptr(), data.size());
#ifndef WINDOWS_ENABLED
FileAccess::set_unix_permissions(to_write, (info.external_fa >> 16) & 0x01FF);
#endif
ret = unzGoToNextFile(pkg);
fc++;
}
if (p) {
memdelete(p);
}
unzClose(pkg);
_update_template_list();
return true;
}
void ExportTemplateManager::popup_manager() {
_update_template_list();
popup_centered(Size2(400, 400) * EDSCALE);
}
void ExportTemplateManager::ok_pressed() {
template_open->popup_centered_ratio();
}
void ExportTemplateManager::_http_download_mirror_completed(int p_status, int p_code, const PackedStringArray &headers, const PackedByteArray &p_data) {
if (p_status != HTTPRequest::RESULT_SUCCESS || p_code != 200) {
EditorNode::get_singleton()->show_warning(TTR("Error getting the list of mirrors."));
return;
}
String mirror_str;
{
const uint8_t *r = p_data.ptr();
mirror_str.parse_utf8((const char *)r, p_data.size());
}
template_list_state->hide();
template_download_progress->hide();
Variant r;
String errs;
int errline;
Error err = JSON::parse(mirror_str, r, errs, errline);
if (err != OK) {
EditorNode::get_singleton()->show_warning(TTR("Error parsing JSON of mirror list. Please report this issue!"));
return;
}
bool mirrors_found = false;
Dictionary d = r;
if (d.has("mirrors")) {
Array mirrors = d["mirrors"];
for (int i = 0; i < mirrors.size(); i++) {
Dictionary m = mirrors[i];
ERR_CONTINUE(!m.has("url") || !m.has("name"));
LinkButton *lb = memnew(LinkButton);
lb->set_text(m["name"]);
lb->connect("pressed", callable_mp(this, &ExportTemplateManager::_begin_template_download), varray(m["url"]));
template_list->add_child(lb);
mirrors_found = true;
}
}
if (!mirrors_found) {
EditorNode::get_singleton()->show_warning(TTR("No download links found for this version. Direct download is only available for official releases."));
return;
}
}
void ExportTemplateManager::_http_download_templates_completed(int p_status, int p_code, const PackedStringArray &headers, const PackedByteArray &p_data) {
switch (p_status) {
case HTTPRequest::RESULT_CANT_RESOLVE: {
template_list_state->set_text(TTR("Can't resolve."));
} break;
case HTTPRequest::RESULT_BODY_SIZE_LIMIT_EXCEEDED:
case HTTPRequest::RESULT_CONNECTION_ERROR:
case HTTPRequest::RESULT_CHUNKED_BODY_SIZE_MISMATCH:
case HTTPRequest::RESULT_SSL_HANDSHAKE_ERROR:
case HTTPRequest::RESULT_CANT_CONNECT: {
template_list_state->set_text(TTR("Can't connect."));
} break;
case HTTPRequest::RESULT_NO_RESPONSE: {
template_list_state->set_text(TTR("No response."));
} break;
case HTTPRequest::RESULT_REQUEST_FAILED: {
template_list_state->set_text(TTR("Request Failed."));
} break;
case HTTPRequest::RESULT_REDIRECT_LIMIT_REACHED: {
template_list_state->set_text(TTR("Redirect Loop."));
} break;
default: {
if (p_code != 200) {
template_list_state->set_text(TTR("Failed:") + " " + itos(p_code));
} else {
String path = download_templates->get_download_file();
template_list_state->set_text(TTR("Download Complete."));
template_downloader->hide();
bool ret = _install_from_file(path, false);
if (ret) {
// Clean up downloaded file.
DirAccessRef da = DirAccess::create(DirAccess::ACCESS_FILESYSTEM);
Error err = da->remove(path);
if (err != OK) {
EditorNode::get_singleton()->add_io_error(TTR("Cannot remove temporary file:") + "\n" + path + "\n");
}
} else {
EditorNode::get_singleton()->add_io_error(vformat(TTR("Templates installation failed.\nThe problematic templates archives can be found at '%s'."), path));
}
}
} break;
}
set_process(false);
}
void ExportTemplateManager::_begin_template_download(const String &p_url) {
if (Input::get_singleton()->is_key_pressed(KEY_SHIFT)) {
OS::get_singleton()->shell_open(p_url);
return;
}
for (int i = 0; i < template_list->get_child_count(); i++) {
BaseButton *b = Object::cast_to<BaseButton>(template_list->get_child(0));
if (b) {
b->set_disabled(true);
}
}
download_data.clear();
download_templates->set_download_file(EditorSettings::get_singleton()->get_cache_dir().plus_file("tmp_templates.tpz"));
download_templates->set_use_threads(true);
Error err = download_templates->request(p_url);
if (err != OK) {
EditorNode::get_singleton()->show_warning(TTR("Error requesting URL:") + " " + p_url);
return;
}
set_process(true);
template_list_state->show();
template_download_progress->set_max(100);
template_download_progress->set_value(0);
template_download_progress->show();
template_list_state->set_text(TTR("Connecting to Mirror..."));
}
void ExportTemplateManager::_window_template_downloader_closed() {
download_templates->cancel_request();
}
void ExportTemplateManager::_notification(int p_what) {
if (p_what == NOTIFICATION_VISIBILITY_CHANGED) {
if (!is_visible()) {
set_process(false);
}
}
if (p_what == NOTIFICATION_PROCESS) {
update_countdown -= get_process_delta_time();
if (update_countdown > 0) {
return;
}
update_countdown = 0.5;
String status;
bool errored = false;
switch (download_templates->get_http_client_status()) {
case HTTPClient::STATUS_DISCONNECTED:
status = TTR("Disconnected");
errored = true;
break;
case HTTPClient::STATUS_RESOLVING: status = TTR("Resolving"); break;
case HTTPClient::STATUS_CANT_RESOLVE:
status = TTR("Can't Resolve");
errored = true;
break;
case HTTPClient::STATUS_CONNECTING: status = TTR("Connecting..."); break;
case HTTPClient::STATUS_CANT_CONNECT:
status = TTR("Can't Connect");
errored = true;
break;
case HTTPClient::STATUS_CONNECTED: status = TTR("Connected"); break;
case HTTPClient::STATUS_REQUESTING: status = TTR("Requesting..."); break;
case HTTPClient::STATUS_BODY:
status = TTR("Downloading");
if (download_templates->get_body_size() > 0) {
status += " " + String::humanize_size(download_templates->get_downloaded_bytes()) + "/" + String::humanize_size(download_templates->get_body_size());
template_download_progress->set_max(download_templates->get_body_size());
template_download_progress->set_value(download_templates->get_downloaded_bytes());
} else {
status += " " + String::humanize_size(download_templates->get_downloaded_bytes());
}
break;
case HTTPClient::STATUS_CONNECTION_ERROR:
status = TTR("Connection Error");
errored = true;
break;
case HTTPClient::STATUS_SSL_HANDSHAKE_ERROR:
status = TTR("SSL Handshake Error");
errored = true;
break;
}
template_list_state->set_text(status);
if (errored) {
set_process(false);
}
}
}
bool ExportTemplateManager::can_install_android_template() {
const String templates_dir = EditorSettings::get_singleton()->get_templates_dir().plus_file(VERSION_FULL_CONFIG);
return FileAccess::exists(templates_dir.plus_file("android_source.zip"));
}
Error ExportTemplateManager::install_android_template() {
// To support custom Android builds, we install the Java source code and buildsystem
// from android_source.zip to the project's res://android folder.
DirAccessRef da = DirAccess::open("res://");
ERR_FAIL_COND_V(!da, ERR_CANT_CREATE);
// Make res://android dir (if it does not exist).
da->make_dir("android");
{
// Add version, to ensure building won't work if template and Godot version don't match.
FileAccessRef f = FileAccess::open("res://android/.build_version", FileAccess::WRITE);
ERR_FAIL_COND_V(!f, ERR_CANT_CREATE);
f->store_line(VERSION_FULL_CONFIG);
f->close();
}
// Create the android plugins directory.
Error err = da->make_dir_recursive("android/plugins");
ERR_FAIL_COND_V(err != OK, err);
err = da->make_dir_recursive("android/build");
ERR_FAIL_COND_V(err != OK, err);
{
// Add an empty .gdignore file to avoid scan.
FileAccessRef f = FileAccess::open("res://android/build/.gdignore", FileAccess::WRITE);
ERR_FAIL_COND_V(!f, ERR_CANT_CREATE);
f->store_line("");
f->close();
}
// Uncompress source template.
const String &templates_path = EditorSettings::get_singleton()->get_templates_dir().plus_file(VERSION_FULL_CONFIG);
const String &source_zip = templates_path.plus_file("android_source.zip");
ERR_FAIL_COND_V(!FileAccess::exists(source_zip), ERR_CANT_OPEN);
FileAccess *src_f = nullptr;
zlib_filefunc_def io = zipio_create_io_from_file(&src_f);
unzFile pkg = unzOpen2(source_zip.utf8().get_data(), &io);
ERR_FAIL_COND_V_MSG(!pkg, ERR_CANT_OPEN, "Android sources not in ZIP format.");
int ret = unzGoToFirstFile(pkg);
int total_files = 0;
// Count files to unzip.
while (ret == UNZ_OK) {
total_files++;
ret = unzGoToNextFile(pkg);
}
ret = unzGoToFirstFile(pkg);
ProgressDialog::get_singleton()->add_task("uncompress_src", TTR("Uncompressing Android Build Sources"), total_files);
Set<String> dirs_tested;
int idx = 0;
while (ret == UNZ_OK) {
// Get file path.
unz_file_info info;
char fpath[16384];
ret = unzGetCurrentFileInfo(pkg, &info, fpath, 16384, nullptr, 0, nullptr, 0);
String path = fpath;
String base_dir = path.get_base_dir();
if (!path.ends_with("/")) {
Vector<uint8_t> data;
data.resize(info.uncompressed_size);
// Read.
unzOpenCurrentFile(pkg);
unzReadCurrentFile(pkg, data.ptrw(), data.size());
unzCloseCurrentFile(pkg);
if (!dirs_tested.has(base_dir)) {
da->make_dir_recursive(String("android/build").plus_file(base_dir));
dirs_tested.insert(base_dir);
}
String to_write = String("res://android/build").plus_file(path);
FileAccess *f = FileAccess::open(to_write, FileAccess::WRITE);
if (f) {
f->store_buffer(data.ptr(), data.size());
memdelete(f);
#ifndef WINDOWS_ENABLED
FileAccess::set_unix_permissions(to_write, (info.external_fa >> 16) & 0x01FF);
#endif
} else {
ERR_PRINT("Can't uncompress file: " + to_write);
}
}
ProgressDialog::get_singleton()->task_step("uncompress_src", path, idx);
idx++;
ret = unzGoToNextFile(pkg);
}
ProgressDialog::get_singleton()->end_task("uncompress_src");
unzClose(pkg);
return OK;
}
void ExportTemplateManager::_bind_methods() {
}
ExportTemplateManager::ExportTemplateManager() {
VBoxContainer *main_vb = memnew(VBoxContainer);
add_child(main_vb);
current_hb = memnew(HBoxContainer);
main_vb->add_margin_child(TTR("Current Version:"), current_hb, false);
installed_scroll = memnew(ScrollContainer);
main_vb->add_margin_child(TTR("Installed Versions:"), installed_scroll, true);
installed_vb = memnew(VBoxContainer);
installed_scroll->add_child(installed_vb);
installed_scroll->set_enable_v_scroll(true);
installed_scroll->set_enable_h_scroll(false);
installed_vb->set_h_size_flags(Control::SIZE_EXPAND_FILL);
get_cancel()->set_text(TTR("Close"));
get_ok()->set_text(TTR("Install From File"));
remove_confirm = memnew(ConfirmationDialog);
remove_confirm->set_title(TTR("Remove Template"));
add_child(remove_confirm);
remove_confirm->connect("confirmed", callable_mp(this, &ExportTemplateManager::_uninstall_template_confirm));
template_open = memnew(FileDialog);
template_open->set_title(TTR("Select Template File"));
template_open->add_filter("*.tpz ; " + TTR("Godot Export Templates"));
template_open->set_access(FileDialog::ACCESS_FILESYSTEM);
template_open->set_file_mode(FileDialog::FILE_MODE_OPEN_FILE);
template_open->connect("file_selected", callable_mp(this, &ExportTemplateManager::_install_from_file), varray(true));
add_child(template_open);
set_title(TTR("Export Template Manager"));
set_hide_on_ok(false);
request_mirror = memnew(HTTPRequest);
add_child(request_mirror);
request_mirror->connect("request_completed", callable_mp(this, &ExportTemplateManager::_http_download_mirror_completed));
download_templates = memnew(HTTPRequest);
add_child(download_templates);
download_templates->connect("request_completed", callable_mp(this, &ExportTemplateManager::_http_download_templates_completed));
template_downloader = memnew(AcceptDialog);
template_downloader->set_title(TTR("Download Templates"));
template_downloader->get_ok()->set_text(TTR("Close"));
template_downloader->set_exclusive(true);
add_child(template_downloader);
template_downloader->connect("cancelled", callable_mp(this, &ExportTemplateManager::_window_template_downloader_closed));
VBoxContainer *vbc = memnew(VBoxContainer);
template_downloader->add_child(vbc);
ScrollContainer *sc = memnew(ScrollContainer);
sc->set_custom_minimum_size(Size2(400, 200) * EDSCALE);
vbc->add_margin_child(TTR("Select mirror from list: (Shift+Click: Open in Browser)"), sc);
template_list = memnew(VBoxContainer);
sc->add_child(template_list);
sc->set_enable_v_scroll(true);
sc->set_enable_h_scroll(false);
template_list_state = memnew(Label);
vbc->add_child(template_list_state);
template_download_progress = memnew(ProgressBar);
vbc->add_child(template_download_progress);
update_countdown = 0;
}