void Element::refreshMedia() {
_flags &= ~Flag::HiddenByGroup;
const auto item = data();
const auto media = item->media();
if (media && media->canBeGrouped()) {
if (const auto group = history()->owner().groups().find(item)) {
if (group->items.back() != item) {
_media = nullptr;
_flags |= Flag::HiddenByGroup;
} else {
_media = std::make_unique<HistoryGroupedMedia>(
this,
group->items);
if (!pendingResize()) {
history()->owner().requestViewResize(this);
}
}
return;
}
}
if (_data->media()) {
_media = _data->media()->createView(this);
} else {
_media = nullptr;
}
}
bool Groups::isGrouped(not_null<HistoryItem*> item) const {
if (!item->groupId()) {
return false;
}
const auto media = item->media();
return media && media->canBeGrouped();
}
bool HistoryGroupedMedia::applyGroup(
const std::vector<not_null<HistoryItem*>> &items) {
Expects(items.size() <= kMaxDisplayedGroupSize);
if (items.empty()) {
return false;
}
if (validateGroupParts(items)) {
return true;
}
for (const auto item : items) {
const auto media = item->media();
Assert(media != nullptr && media->canBeGrouped());
_parts.push_back(Part(item));
_parts.back().content = media->createView(_parent, item);
};
return true;
}