Allow share and remove cloud themes.

Telegram/Resources/langs/lang.strings

@@ -414,6 +414,10 @@ https://github.com/telegramdesktop/tdesktop/blob/master/LEGAL
 "lng_theme_keep_changes" = "Keep changes";
 "lng_theme_revert" = "Revert";
 "lng_theme_no_desktop" = "Sorry, this theme doesn't include a version for Telegram Desktop.";
+"lng_theme_share" = "Share";
+"lng_theme_edit" = "Edit";
+"lng_theme_delete" = "Delete";
+"lng_theme_delete_sure" = "Are you sure you want to delete this theme?";
 "lng_background_header" = "Background preview";
 "lng_background_text1" = "Ah, you kids today with techno music! You should enjoy the classics, like Hasselhoff!";
 "lng_background_text2" = "I can't even take you seriously right now.";

Telegram/SourceFiles/data/data_cloud_themes.cpp

@@ -290,4 +290,19 @@ void CloudThemes::apply(const CloudTheme &theme) {
 	}
 }
 
+void CloudThemes::remove(uint64 cloudThemeId) {
+	const auto i = ranges::find(_list, cloudThemeId, &CloudTheme::id);
+	if (i == end(_list)) {
+		return;
+	}
+	_session->api().request(MTPaccount_SaveTheme(
+		MTP_inputTheme(
+			MTP_long(i->id),
+			MTP_long(i->accessHash)),
+		MTP_bool(true)
+	)).send();
+	_list.erase(i);
+	_updates.fire({});
+}
+
 } // namespace Data

Telegram/SourceFiles/data/data_cloud_themes.h

@@ -40,6 +40,7 @@ public:
 	[[nodiscard]] rpl::producer<> updated() const;
 	[[nodiscard]] const std::vector<CloudTheme> &list() const;
 	void apply(const CloudTheme &data);
+	void remove(uint64 cloudThemeId);
 
 	void applyUpdate(const MTPTheme &theme);
 

Telegram/SourceFiles/window/themes/window_theme.cpp

@@ -1245,6 +1245,12 @@ void ToggleNightMode(const QString &path) {
 	Background()->toggleNightMode(path);
 }
 
+void ResetToSomeDefault() {
+	Background()->reapplyWithNightMode(
+		IsNightMode() ? NightThemePath() : QString(),
+		IsNightMode());
+}
+
 bool LoadFromContent(
 		const QByteArray &content,
 		not_null<Instance*> out,

Telegram/SourceFiles/window/themes/window_theme.h

@@ -75,6 +75,7 @@ QString NightThemePath();
 void SetNightModeValue(bool nightMode);
 void ToggleNightMode();
 void ToggleNightMode(const QString &themePath);
+void ResetToSomeDefault();
 [[nodiscard]] bool IsNonDefaultBackground();
 void Revert();
 
@@ -198,6 +199,7 @@ private:
 	friend void SetNightModeValue(bool nightMode);
 	friend void ToggleNightMode();
 	friend void ToggleNightMode(const QString &themePath);
+	friend void ResetToSomeDefault();
 	friend void KeepApplied();
 	friend void KeepFromEditor(
 		const QByteArray &originalContent,

Telegram/SourceFiles/window/themes/window_themes_cloud_list.cpp

@@ -17,12 +17,19 @@ https://github.com/telegramdesktop/tdesktop/blob/master/LEGAL
 #include "data/data_document.h"
 #include "data/data_session.h"
 #include "ui/image/image_prepare.h"
+#include "ui/widgets/popup_menu.h"
+#include "ui/toast/toast.h"
+#include "boxes/confirm_box.h"
 #include "lang/lang_keys.h"
 #include "main/main_session.h"
+#include "core/application.h"
 #include "styles/style_settings.h"
 #include "styles/style_boxes.h"
 #include "styles/style_history.h"
 
+#include <QtGui/QGuiApplication>
+#include <QtGui/QClipboard>
+
 namespace Window {
 namespace Theme {
 namespace {
@@ -474,14 +481,19 @@ void CloudList::insert(int index, const Data::CloudTheme &theme) {
 	button->setAllowTextLines(2);
 	button->setTextBreakEverywhere();
 	button->show();
-	button->addClickHandler([=] {
+	button->setAcceptBoth(true);
+	button->addClickHandler([=](Qt::MouseButton button) {
 		const auto i = ranges::find(_elements, id, &Element::id);
 		if (i == end(_elements)
 			|| id == kFakeCloudThemeId
 			|| i->waiting) {
 			return;
 		}
-		_window->session().data().cloudThemes().showPreview(i->theme);
+		if (button == Qt::RightButton) {
+			showMenu(*i);
+		} else {
+			_window->session().data().cloudThemes().showPreview(i->theme);
+		}
 	});
 	auto &element = *_elements.insert(
 		begin(_elements) + index,
@@ -523,6 +535,56 @@ void CloudList::refreshColors(Element &element) {
 	}
 }
 
+void CloudList::showMenu(Element &element) {
+	if (_contextMenu) {
+		_contextMenu = nullptr;
+		return;
+	}
+	_contextMenu = base::make_unique_q<Ui::PopupMenu>(element.button.get());
+	const auto cloud = element.theme;
+	if (const auto slug = element.theme.slug; !slug.isEmpty()) {
+		_contextMenu->addAction(tr::lng_theme_share(tr::now), [=] {
+			QGuiApplication::clipboard()->setText(
+				Core::App().createInternalLinkFull("addtheme/" + slug));
+			Ui::Toast::Show(tr::lng_background_link_copied(tr::now));
+		});
+	}
+	if (cloud.documentId
+		&& cloud.createdBy == _window->session().userId()
+		&& Background()->themeObject().cloud.id == cloud.id) {
+		_contextMenu->addAction(tr::lng_theme_edit(tr::now), [=] {
+			StartEditor(&_window->window(), cloud);
+		});
+	}
+	const auto id = cloud.id;
+	_contextMenu->addAction(tr::lng_theme_delete(tr::now), [=] {
+		const auto box = std::make_shared<QPointer<BoxContent>>();
+		const auto remove = [=] {
+			if (Background()->themeObject().cloud.id == id
+				|| id == kFakeCloudThemeId) {
+				if (*box) {
+					(*box)->closeBox();
+				}
+				if (Background()->editingTheme().has_value()) {
+					Background()->clearEditingTheme(
+						ClearEditing::KeepChanges);
+					_window->window().showRightColumn(nullptr);
+				}
+				ResetToSomeDefault();
+				KeepApplied();
+			}
+			if (id != kFakeCloudThemeId) {
+				_window->session().data().cloudThemes().remove(id);
+			}
+		};
+		*box = _window->window().show(Box<ConfirmBox>(
+			tr::lng_theme_delete_sure(tr::now),
+			tr::lng_theme_delete(tr::now),
+			remove));
+	});
+	_contextMenu->popup(QCursor::pos());
+}
+
 void CloudList::setWaiting(Element &element, bool waiting) {
 	element.waiting = waiting;
 	element.button->setPointerCursor(

Telegram/SourceFiles/window/themes/window_themes_cloud_list.h

@@ -10,6 +10,11 @@ https://github.com/telegramdesktop/tdesktop/blob/master/LEGAL
 #include "boxes/generic_box.h"
 #include "data/data_cloud_themes.h"
 #include "ui/widgets/checkbox.h"
+#include "base/unique_qptr.h"
+
+namespace Ui {
+class PopupMenu;
+} // namespace Ui
 
 namespace Window {
 
@@ -98,6 +103,7 @@ private:
 	void refreshElementUsing(Element &element, const Data::CloudTheme &data);
 	void insert(int index, const Data::CloudTheme &theme);
 	void refreshColors(Element &element);
+	void showMenu(Element &element);
 	void refreshColorsFromDocument(
 		Element &element,
 		not_null<DocumentData*> document);
@@ -119,6 +125,7 @@ private:
 	std::vector<uint64> _idByGroupValue;
 	base::flat_map<uint64, int> _groupValueById;
 	rpl::lifetime _downloadFinishedLifetime;
+	base::unique_qptr<Ui::PopupMenu> _contextMenu;
 
 };