Show shared link long URL tooltips.

Telegram/SourceFiles/history/view/history_view_list_widget.cpp

@@ -2838,7 +2838,7 @@ void ListWidget::mouseActionUpdate() {
 			}
 		}
 	}
-	auto lnkChanged = ClickHandler::setActive(dragState.link, lnkhost);
+	const auto lnkChanged = ClickHandler::setActive(dragState.link, lnkhost);
 	if (lnkChanged || dragState.cursor != _mouseCursorState) {
 		Ui::Tooltip::Hide();
 	}

Telegram/SourceFiles/info/media/info_media_list_widget.cpp

@@ -449,6 +449,21 @@ bool ListWidget::itemVisible(not_null<const BaseLayout*> item) {
 	return true;
 }
 
+QString ListWidget::tooltipText() const {
+	if (const auto link = ClickHandler::getActive()) {
+		return link->tooltip();
+	}
+	return QString();
+}
+
+QPoint ListWidget::tooltipPos() const {
+	return _mousePosition;
+}
+
+bool ListWidget::tooltipWindowActive() const {
+	return Ui::AppInFocus() && Ui::InFocusChain(window());
+}
+
 void ListWidget::openPhoto(not_null<PhotoData*> photo, FullMsgId id) {
 	_controller->parentController()->openPhoto(photo, id);
 }
@@ -1293,6 +1308,7 @@ void ListWidget::leaveEventHook(QEvent *e) {
 		}
 	}
 	ClickHandler::clearActive();
+	Ui::Tooltip::Hide();
 	if (!ClickHandler::getPressed() && _cursor != style::cur_default) {
 		_cursor = style::cur_default;
 		setCursor(_cursor);
@@ -1361,7 +1377,13 @@ void ListWidget::mouseActionUpdate(const QPoint &globalPosition) {
 		dragState = _overLayout->getState(_overState.cursor, request);
 		lnkhost = _overLayout;
 	}
-	ClickHandler::setActive(dragState.link, lnkhost);
+	const auto lnkChanged = ClickHandler::setActive(dragState.link, lnkhost);
+	if (lnkChanged || dragState.cursor != _mouseCursorState) {
+		Ui::Tooltip::Hide();
+	}
+	if (dragState.link) {
+		Ui::Tooltip::Show(1000, this);
+	}
 
 	if (_mouseAction == MouseAction::None) {
 		_mouseCursorState = dragState.cursor;

Telegram/SourceFiles/info/media/info_media_list_widget.h

@@ -8,6 +8,7 @@ https://github.com/telegramdesktop/tdesktop/blob/master/LEGAL
 #pragma once
 
 #include "ui/rp_widget.h"
+#include "ui/widgets/tooltip.h"
 #include "info/media/info_media_widget.h"
 #include "info/media/info_media_common.h"
 #include "overview/overview_layout_delegate.h"
@@ -53,7 +54,8 @@ class ListProvider;
 
 class ListWidget final
 	: public Ui::RpWidget
-	, public Overview::Layout::Delegate {
+	, public Overview::Layout::Delegate
+	, public Ui::AbstractTooltipShower {
 public:
 	ListWidget(
 		QWidget *parent,
@@ -83,6 +85,11 @@ public:
 	void repaintItem(not_null<const BaseLayout*> item) override;
 	bool itemVisible(not_null<const BaseLayout*> item) override;
 
+	// AbstractTooltipShower interface
+	QString tooltipText() const override;
+	QPoint tooltipPos() const override;
+	bool tooltipWindowActive() const override;
+
 	void openPhoto(not_null<PhotoData*> photo, FullMsgId id) override;
 	void openDocument(
 		not_null<DocumentData*> document,

Telegram/SourceFiles/overview/overview_layout.cpp

@@ -1516,7 +1516,7 @@ Link::Link(
 	const auto createHandler = [](const QString &url) {
 		return UrlClickHandler::IsSuspicious(url)
 			? std::make_shared<HiddenUrlClickHandler>(url)
-			: std::make_shared<UrlClickHandler>(url);
+			: std::make_shared<UrlClickHandler>(url, false);
 	};
 	_page = media ? media->webpage() : nullptr;
 	if (_page) {

Telegram/SourceFiles/overview/overview_layout.h

@@ -438,11 +438,11 @@ private:
 	bool _thumbnailBlurred = true;
 
 	struct LinkEntry {
-		LinkEntry() : width(0) {
-		}
+		LinkEntry() = default;
 		LinkEntry(const QString &url, const QString &text);
+
 		QString text;
-		int32 width;
+		int width = 0;
 		std::shared_ptr<TextClickHandler> lnk;
 	};
 	QVector<LinkEntry> _links;