Block field with toast if texts are not allowed.

Telegram/SourceFiles/chat_helpers/message_field.cpp

@@ -18,7 +18,9 @@ https://github.com/telegramdesktop/tdesktop/blob/master/LEGAL
 #include "core/shortcuts.h"
 #include "core/application.h"
 #include "core/core_settings.h"
+#include "ui/toast/toast.h"
 #include "ui/wrap/vertical_layout.h"
+#include "ui/widgets/buttons.h"
 #include "ui/widgets/popup_menu.h"
 #include "ui/ui_utility.h"
 #include "data/data_session.h"
@@ -50,6 +52,7 @@ using EditLinkAction = Ui::InputField::EditLinkAction;
 using EditLinkSelection = Ui::InputField::EditLinkSelection;
 
 constexpr auto kParseLinksTimeout = crl::time(1000);
+constexpr auto kTypesDuration = 4 * crl::time(1000);
 
 // For mention / custom emoji tags save and validate selfId,
 // ignore tags for different users.
@@ -773,3 +776,86 @@ void MessageLinksParser::apply(
 	}
 	_list = std::move(parsed);
 }
+
+base::unique_qptr<Ui::RpWidget> CreateDisabledFieldView(
+		QWidget *parent,
+		not_null<PeerData*> peer) {
+	auto result = base::make_unique_q<Ui::AbstractButton>(parent);
+	const auto raw = result.get();
+	const auto label = CreateChild<Ui::FlatLabel>(
+		result.get(),
+		tr::lng_send_text_no(),
+		st::historySendDisabled);
+	label->setAttribute(Qt::WA_TransparentForMouseEvents);
+	raw->setPointerCursor(false);
+	raw->widthValue(
+	) | rpl::start_with_next([=](int width) {
+		const auto &st = st::historyComposeField;
+		const auto margins = (st.textMargins + st.placeholderMargins);
+		const auto available = width - margins.left() - margins.right();
+		const auto skip = st::historySendDisabledIconSkip;
+		label->resizeToWidth(available - skip);
+		label->moveToLeft(margins.left() + skip, margins.top(), width);
+	}, label->lifetime());
+	raw->paintRequest(
+	) | rpl::start_with_next([=] {
+		auto p = QPainter(raw);
+		const auto &st = st::historyComposeField;
+		const auto margins = (st.textMargins + st.placeholderMargins);
+		const auto &icon = st::historySendDisabledIcon;
+		icon.paint(
+			p,
+			margins.left() + st::historySendDisabledPosition.x(),
+			margins.top() + st::historySendDisabledPosition.y(),
+			raw->width());
+	}, raw->lifetime());
+	using WeakToast = base::weak_ptr<Ui::Toast::Instance>;
+	const auto toast = raw->lifetime().make_state<WeakToast>();
+	raw->setClickedCallback([=] {
+		if (toast->get()) {
+			return;
+		}
+		using Flag = ChatRestriction;
+		const auto map = base::flat_map<Flag, tr::phrase<>>{
+			{ Flag::SendPhotos, tr::lng_send_text_type_photos },
+			{ Flag::SendVideos, tr::lng_send_text_type_videos },
+			{
+				Flag::SendVideoMessages,
+				tr::lng_send_text_type_video_messages,
+			},
+			{ Flag::SendMusic, tr::lng_send_text_type_music },
+			{
+				Flag::SendVoiceMessages,
+				tr::lng_send_text_type_voice_messages,
+			},
+			{ Flag::SendFiles, tr::lng_send_text_type_files },
+			{ Flag::SendStickers, tr::lng_send_text_type_stickers },
+			{ Flag::SendPolls, tr::lng_send_text_type_polls },
+		};
+		auto list = QStringList();
+		for (const auto &[flag, phrase] : map) {
+			if (Data::CanSend(peer, flag, false)) {
+				list.append(phrase(tr::now));
+			}
+		}
+		if (list.empty()) {
+			return;
+		}
+		const auto types = (list.size() > 1)
+			? tr::lng_send_text_type_and_last(
+				tr::now,
+				lt_types,
+				list.mid(0, list.size() - 1).join(", "),
+				lt_last,
+				list.back())
+			: list.back();
+		*toast = Ui::Toast::Show(parent, {
+			.text = { tr::lng_send_text_no_about(tr::now, lt_types, types) },
+			.st = &st::defaultMultilineToast,
+			.durationMs = kTypesDuration,
+			.multiline = true,
+			.slideSide = RectPart::Bottom,
+		});
+	});
+	return result;
+}