Add a hook into click handler activation.

ui/click_handler.cpp

@@ -8,6 +8,7 @@
 
 #include "base/algorithm.h"
 #include "ui/text/text_entity.h"
+#include "ui/integration.h"
 
 #include <QtCore/QPointer>
 
@@ -170,7 +171,9 @@ void ActivateClickHandler(
 		ClickContext context) {
 	crl::on_main(guard, [=, weak = std::weak_ptr<ClickHandler>(handler)] {
 		if (const auto strong = weak.lock()) {
-			strong->onClick(context);
+			if (Ui::Integration::Instance().allowClickHandlerActivation(strong, context)) {
+				strong->onClick(context);
+			}
 		}
 	});
 }

ui/integration.cpp

@@ -76,6 +76,12 @@ Fn<void()> Integration::createSpoilerRepaint(const std::any &context) {
 	return nullptr;
 }
 
+bool Integration::allowClickHandlerActivation(
+		const std::shared_ptr<ClickHandler> &handler,
+		const ClickContext &context) {
+	return true;
+}
+
 bool Integration::handleUrlClick(
 		const QString &url,
 		const QVariant &context) {

ui/integration.h

@@ -20,6 +20,7 @@ class QVariant;
 
 struct TextParseOptions;
 class ClickHandler;
+struct ClickContext;
 struct EntityLinkData;
 
 namespace Ui {
@@ -64,6 +65,9 @@ public:
 		const std::any &context) -> std::unique_ptr<Text::CustomEmoji>;
 	[[nodiscard]] virtual Fn<void()> createSpoilerRepaint(
 		const std::any &context);
+	[[nodiscard]] virtual bool allowClickHandlerActivation(
+		const std::shared_ptr<ClickHandler> &handler,
+		const ClickContext &context);
 
 	[[nodiscard]] virtual rpl::producer<> forcePopupMenuHideRequests();