Allow selecting export folder.

Telegram/Resources/langs/lang.strings

@@ -1696,6 +1696,7 @@ https://github.com/telegramdesktop/tdesktop/blob/master/LEGAL
 "lng_export_finished" = "Export is finished.";
 "lng_export_total_files" = "Total files: {count}.";
 "lng_export_total_size" = "Total size: {size}.";
+"lng_export_folder" = "Choose export folder";
 
 // Wnd specific
 

Telegram/SourceFiles/boxes/download_path_box.cpp

@@ -91,7 +91,7 @@ void DownloadPathBox::onEditPath() {
 	}();
 	const auto handleFolder = [=](const QString &result) {
 		if (!result.isEmpty()) {
-			_path = result + '/';
+			_path = result.endsWith('/') ? result : (result + '/');
 			_pathBookmark = psDownloadPathBookmark(_path);
 			setPathText(QDir::toNativeSeparators(_path));
 			_group->setValue(Directory::Custom);

Telegram/SourceFiles/core/file_utilities.cpp

@@ -76,8 +76,10 @@ QString filedialogDefaultName(
 	if (skipExistance) {
 		name = base + extension;
 	} else {
-		QDir dir(directoryPath);
-		QString nameBase = dir.absolutePath() + '/' + base;
+		QDir directory(directoryPath);
+		const auto dir = directory.absolutePath();
+		const auto nameBase = (dir.endsWith('/') ? dir : (dir + '/'))
+			+ base;
 		name = nameBase + extension;
 		for (int i = 0; QFileInfo(name).exists(); ++i) {
 			name = nameBase + qsl(" (%1)").arg(i + 2) + extension;
@@ -90,14 +92,16 @@ QString filedialogNextFilename(
 		const QString &name,
 		const QString &cur,
 		const QString &path) {
-	QDir dir(path.isEmpty() ? cDialogLastPath() : path);
+	QDir directory(path.isEmpty() ? cDialogLastPath() : path);
 	int32 extIndex = name.lastIndexOf('.');
 	QString prefix = name, extension;
 	if (extIndex >= 0) {
 		extension = name.mid(extIndex);
 		prefix = name.mid(0, extIndex);
 	}
-	QString nameBase = dir.absolutePath() + '/' + prefix, result = nameBase + extension;
+	const auto dir = directory.absolutePath();
+	const auto nameBase = (dir.endsWith('/') ? dir : (dir + '/')) + prefix;
+	auto result = nameBase + extension;
 	for (int i = 0; result.toLower() != cur.toLower() && QFileInfo(result).exists(); ++i) {
 		result = nameBase + qsl(" (%1)").arg(i + 2) + extension;
 	}

Telegram/SourceFiles/core/launcher.cpp

@@ -151,7 +151,8 @@ void Launcher::prepareSettings() {
 			info = info.symLinkTarget();
 		}
 		if (info.exists()) {
-			gExeDir = info.absoluteDir().absolutePath() + '/';
+			const auto dir = info.absoluteDir().absolutePath();
+			gExeDir = (dir.endsWith('/') ? dir : (dir + '/'));
 			gExeName = info.fileName();
 		}
 	}

Telegram/SourceFiles/export/export_controller.cpp

@@ -232,11 +232,12 @@ bool Controller::normalizePath() {
 	};
 	QDir folder(_settings.path);
 	const auto path = folder.absolutePath();
-	_settings.path = path + '/';
+	_settings.path = path.endsWith('/') ? path : (path + '/');
 	if (!folder.exists()) {
 		return check();
 	}
-	const auto list = folder.entryInfoList();
+	const auto mode = QDir::AllEntries | QDir::NoDotAndDotDot;
+	const auto list = folder.entryInfoList(mode);
 	if (list.isEmpty()) {
 		return true;
 	}

Telegram/SourceFiles/export/view/export_view_settings.cpp

@@ -18,6 +18,7 @@ https://github.com/telegramdesktop/tdesktop/blob/master/LEGAL
 #include "ui/wrap/slide_wrap.h"
 #include "ui/wrap/fade_wrap.h"
 #include "platform/platform_specific.h"
+#include "core/file_utilities.h"
 #include "styles/style_widgets.h"
 #include "styles/style_export.h"
 #include "styles/style_boxes.h"
@@ -311,7 +312,7 @@ void SettingsWidget::refreshButtons(not_null<Ui::RpWidget*> container) {
 		: nullptr;
 	if (start) {
 		start->show();
-		_startClicks = start->clicks();
+		start->addClickHandler([=] { chooseFolder(); });
 
 		container->sizeValue(
 		) | rpl::start_with_next([=](QSize size) {
@@ -339,14 +340,16 @@ void SettingsWidget::refreshButtons(not_null<Ui::RpWidget*> container) {
 	}, cancel->lifetime());
 }
 
+void SettingsWidget::chooseFolder() {
+	const auto ready = [=](QString &&result) {
+		_data.path = result;
+		_startClicks.fire(base::duplicate(_data));
+	};
+	FileDialog::GetFolder(this, lang(lng_export_folder), _data.path, ready);
+}
+
 rpl::producer<Settings> SettingsWidget::startClicks() const {
-	return _startClicks.value(
-	) | rpl::map([](Wrap &&wrap) {
-		return std::move(wrap.value);
-	}) | rpl::flatten_latest(
-	) | rpl::map([=] {
-		return _data;
-	});
+	return _startClicks.events();
 }
 
 rpl::producer<> SettingsWidget::cancelClicks() const {

Telegram/SourceFiles/export/view/export_view_settings.h

@@ -31,6 +31,7 @@ private:
 	using MediaTypes = MediaSettings::Types;
 
 	void setupContent();
+	void chooseFolder();
 	void refreshButtons(not_null<Ui::RpWidget*> container);
 	void createSizeSlider(not_null<Ui::VerticalLayout*> container);
 
@@ -43,7 +44,7 @@ private:
 		rpl::producer<> value;
 
 	};
-	rpl::variable<Wrap> _startClicks;
+	rpl::event_stream<Settings> _startClicks;
 	rpl::variable<Wrap> _cancelClicks;
 	rpl::event_stream<Settings::Types> _dataTypesChanges;