From 35378e717a40fe0b1679dc33dbb35dee52cdde4d Mon Sep 17 00:00:00 2001
From: John Preston <johnprestonmail@gmail.com>
Date: Thu, 16 Dec 2021 16:35:07 +0400
Subject: [PATCH] Handle click on the reaction once again.

---
 .../SourceFiles/history/history_inner_widget.cpp   | 12 +++++++++---
 .../history/view/history_view_reactions.cpp        | 14 ++++++++++++--
 .../history/view/history_view_reactions.h          |  6 +++---
 3 files changed, 24 insertions(+), 8 deletions(-)

diff --git a/Telegram/SourceFiles/history/history_inner_widget.cpp b/Telegram/SourceFiles/history/history_inner_widget.cpp
index 2b0d89e56..28ffda103 100644
--- a/Telegram/SourceFiles/history/history_inner_widget.cpp
+++ b/Telegram/SourceFiles/history/history_inner_widget.cpp
@@ -2987,8 +2987,8 @@ void HistoryInner::mouseActionUpdate() {
 	QPoint m;
 
 	adjustCurrent(point.y());
-	const auto reactionItemId = _reactionsManager->lookupButtonId(point);
-	const auto reactionItem = session().data().message(reactionItemId);
+	const auto reactionState = _reactionsManager->buttonTextState(point);
+	const auto reactionItem = session().data().message(reactionState.itemId);
 	const auto reactionView = reactionItem
 		? reactionItem->mainView()
 		: nullptr;
@@ -3034,7 +3034,13 @@ void HistoryInner::mouseActionUpdate() {
 		&& (view == App::hoveredItem())
 		&& !_selected.empty()
 		&& (_selected.cbegin()->second != FullSelection);
-	if (point.y() < _historyPaddingTop) {
+	if (reactionView && reactionState.link) {
+		dragState = reactionState;
+		lnkhost = reactionView;
+		_reactionsManager->showSelector([=](QPoint local) {
+			return mapToGlobal(local);
+		});
+	} else if (point.y() < _historyPaddingTop) {
 		if (_botAbout && !_botAbout->info->text.isEmpty() && _botAbout->height > 0) {
 			dragState = TextState(nullptr, _botAbout->info->text.getState(
 				point - _botAbout->rect.topLeft() - QPoint(st::msgPadding.left(), st::msgPadding.top() + st::botDescSkip + st::msgNameFont->height),
diff --git a/Telegram/SourceFiles/history/view/history_view_reactions.cpp b/Telegram/SourceFiles/history/view/history_view_reactions.cpp
index 4727d9c7a..6f1116f2c 100644
--- a/Telegram/SourceFiles/history/view/history_view_reactions.cpp
+++ b/Telegram/SourceFiles/history/view/history_view_reactions.cpp
@@ -376,6 +376,14 @@ Manager::Manager(QWidget *selectorParent, Fn<void(QRect)> buttonUpdate)
 	st::reactionCornerSize.width(),
 	st::reactionCornerSize.height()))
 , _buttonUpdate(std::move(buttonUpdate))
+, _buttonLink(std::make_shared<LambdaClickHandler>(crl::guard(this, [=] {
+	if (_buttonContext && !_list.empty()) {
+		_chosen.fire({
+			.context = _buttonContext,
+			.emoji = _list.front().emoji,
+		});
+	}
+})))
 , _selectorParent(selectorParent) {
 	const auto ratio = style::DevicePixelRatio();
 	_cacheInOut = QImage(
@@ -468,14 +476,16 @@ void Manager::paintButtons(Painter &p, const PaintContext &context) {
 	}
 }
 
-FullMsgId Manager::lookupButtonId(QPoint position) const {
+TextState Manager::buttonTextState(QPoint position) const {
 	if (const auto current = _button.get()) {
 		const auto geometry = current->geometry();
 		if (geometry.contains(position)) {
 			const auto maxInner = QRect({}, CountMaxSizeWithMargins({}));
 			const auto shift = geometry.center() - maxInner.center();
 			if (maxInner.translated(shift).contains(position)) {
-				return _buttonContext;
+				auto result = TextState(nullptr, _buttonLink);
+				result.itemId = _buttonContext;
+				return result;
 			}
 		}
 	}
diff --git a/Telegram/SourceFiles/history/view/history_view_reactions.h b/Telegram/SourceFiles/history/view/history_view_reactions.h
index 1659cba99..acaa56a33 100644
--- a/Telegram/SourceFiles/history/view/history_view_reactions.h
+++ b/Telegram/SourceFiles/history/view/history_view_reactions.h
@@ -28,7 +28,6 @@ namespace HistoryView {
 using PaintContext = Ui::ChatPaintContext;
 enum class PointState : char;
 struct TextState;
-struct StateRequest;
 class Message;
 } // namespace HistoryView
 
@@ -149,7 +148,7 @@ private:
 
 };
 
-class Manager final {
+class Manager final : public base::has_weak_ptr {
 public:
 	Manager(QWidget *selectorParent, Fn<void(QRect)> buttonUpdate);
 	~Manager();
@@ -158,7 +157,7 @@ public:
 
 	void showButton(ButtonParameters parameters);
 	void paintButtons(Painter &p, const PaintContext &context);
-	[[nodiscard]] FullMsgId lookupButtonId(QPoint position) const;
+	[[nodiscard]] TextState buttonTextState(QPoint position) const;
 
 	void showSelector(Fn<QPoint(QPoint)> mapToGlobal);
 	void showSelector(FullMsgId context, QRect globalButtonArea);
@@ -227,6 +226,7 @@ private:
 	std::unique_ptr<Button> _button;
 	std::vector<std::unique_ptr<Button>> _buttonHiding;
 	FullMsgId _buttonContext;
+	ClickHandlerPtr _buttonLink;
 
 	QWidget *_selectorParent = nullptr;
 	std::unique_ptr<Selector> _selector;