init

Telegram/SourceFiles/chat_helpers/field_characters_count_manager.cpp

@@ -0,0 +1,36 @@
+/*
+This file is part of Telegram Desktop,
+the official desktop application for the Telegram messaging service.
+
+For license and copyright information please follow this link:
+https://github.com/telegramdesktop/tdesktop/blob/master/LEGAL
+*/
+#include "chat_helpers/field_characters_count_manager.h"
+
+FieldCharsCountManager::FieldCharsCountManager() = default;
+
+void FieldCharsCountManager::setCount(int count) {
+	_previous = _current;
+	_current = count;
+	if (_previous != _current) {
+		constexpr auto kMax = 15;
+		const auto was = (_previous > kMax);
+		const auto now = (_current > kMax);
+		if (was != now) {
+			_isLimitExceeded = now;
+			_limitExceeds.fire({});
+		}
+	}
+}
+
+int FieldCharsCountManager::count() const {
+	return _current;
+}
+
+bool FieldCharsCountManager::isLimitExceeded() const {
+	return _isLimitExceeded;
+}
+
+rpl::producer<> FieldCharsCountManager::limitExceeds() const {
+	return _limitExceeds.events();
+}