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Fix possible crashes in pinned bar button.

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This commit is contained in:
John Preston 2022-04-26 10:24:36 +04:00
parent c37b08ac8b
commit 7bfe096f3b
1 changed files with 23 additions and 12 deletions
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35
Telegram/SourceFiles/history/view/history_view_pinned_bar.cpp
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@ -15,6 +15,7 @@ https://github.com/telegramdesktop/tdesktop/blob/master/LEGAL
#include "history/view/history_view_pinned_tracker.h"
#include "history/history_item.h"
#include "history/history.h"
#include "base/weak_ptr.h"
#include "apiwrap.h"
#include "styles/style_chat.h"
@ -163,27 +164,32 @@ rpl::producer<HistoryItem*> PinnedBarItemWithReplyMarkup(
consumer.put_next(nullptr);
struct State {
HistoryMessageReplyMarkup *previousReplyMarkup = nullptr;
bool hasReplyMarkup = false;
base::has_weak_ptr guard;
rpl::lifetime lifetime;
FullMsgId resolvedId;
};
const auto state = lifetime.make_state<State>();
const auto pushUnique = [=](not_null<HistoryItem*> item) {
const auto replyMarkup = item->inlineReplyMarkup();
if (state->previousReplyMarkup == replyMarkup) {
if (!state->hasReplyMarkup && !replyMarkup) {
return;
}
state->hasReplyMarkup = (replyMarkup != nullptr);
consumer.put_next(item.get());
state->previousReplyMarkup = replyMarkup;
};
rpl::duplicate(
id
) | rpl::start_with_next([=](PinnedId current) {
) | rpl::filter([=](PinnedId current) {
return current.message && (current.message != state->resolvedId);
}) | rpl::start_with_next([=](PinnedId current) {
const auto fullId = current.message;
if (!fullId) {
return;
}
state->lifetime.destroy();
state->resolvedId = fullId;
invalidate_weak_ptrs(&state->guard);
const auto messageFlag = [=](not_null<HistoryItem*> item) {
using Update = Data::MessageUpdate;
session->changes().messageFlagsValue(
@ -195,12 +201,17 @@ rpl::producer<HistoryItem*> PinnedBarItemWithReplyMarkup(
};
if (const auto item = session->data().message(fullId)) {
messageFlag(item);
} else {
session->api().requestMessageData(
session->data().peer(fullId.peer),
fullId.msg,
[=] { messageFlag(session->data().message(fullId)); });
return;
}
const auto resolved = crl::guard(&state->guard, [=] {
if (const auto item = session->data().message(fullId)) {
messageFlag(item);
}
});
session->api().requestMessageData(
session->data().peer(fullId.peer),
fullId.msg,
resolved);
}, lifetime);
return lifetime;
});