From 69b2030c717da55fc0e8ef6ca0a1731bfc254cff Mon Sep 17 00:00:00 2001
From: 23rd <23rd@vivaldi.net>
Date: Thu, 4 Jun 2020 18:13:05 +0300
Subject: [PATCH] Added updating of WebPage preview image on download finish.

---
 .../history/view/history_view_compose_controls.cpp        | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/Telegram/SourceFiles/history/view/history_view_compose_controls.cpp b/Telegram/SourceFiles/history/view/history_view_compose_controls.cpp
index 4da7623609..3e2f45aa75 100644
--- a/Telegram/SourceFiles/history/view/history_view_compose_controls.cpp
+++ b/Telegram/SourceFiles/history/view/history_view_compose_controls.cpp
@@ -1005,6 +1005,14 @@ void ComposeControls::initWebpageProcess() {
 		return (update.peer.get() == peer);
 	}) | rpl::start_with_next(checkPreview, lifetime);
 
+	_window->session().downloaderTaskFinished(
+	) | rpl::filter([=] {
+		return (*previewData)
+			&& ((*previewData)->document || (*previewData)->photo);
+	}) | rpl::start_with_next((
+		requestRepaint
+	), lifetime);
+
 	const auto fieldLinksParser =
 		lifetime.make_state<MessageLinksParser>(_field);