tdesktop/Telegram/SourceFiles/history/view/history_view_message.cpp

/*
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 "history/view/history_view_message.h"

namespace HistoryView {

Message::Message(not_null<HistoryItem*> data, Context context)
: _data(data)
, _context(context) {
}

not_null<HistoryItem*> Message::data() const {
	return _data;
}

void Message::attachToBlock(not_null<HistoryBlock*> block, int index) {
	Expects(!_data->isLogEntry());
	Expects(_block == nullptr);
	Expects(_indexInBlock < 0);
	Expects(index >= 0);

	_block = block;
	_indexInBlock = index;
	_data->setMainView(this);
	_data->setPendingResize();
}

void Message::removeFromBlock() {
	Expects(_block != nullptr);

	_block->remove(this);
}

Message *Message::previousInBlocks() const {
	if (_block && _indexInBlock >= 0) {
		if (_indexInBlock > 0) {
			return _block->messages[_indexInBlock - 1].get();
		}
		if (auto previous = _block->previousBlock()) {
			Assert(!previous->messages.empty());
			return previous->messages.back().get();
		}
	}
	return nullptr;
}

Message *Message::nextInBlocks() const {
	if (_block && _indexInBlock >= 0) {
		if (_indexInBlock + 1 < _block->messages.size()) {
			return _block->messages[_indexInBlock + 1].get();
		}
		if (auto next = _block->nextBlock()) {
			Assert(!next->messages.empty());
			return next->messages.front().get();
		}
	}
	return nullptr;
}

Message::~Message() {
	App::messageViewDestroyed(this);
}

} // namespace HistoryView