Allow custom click handlers in toasts.

ui/toast/toast.h

@@ -8,6 +8,7 @@
 
 #include "ui/effects/animations.h"
 #include "ui/text/text_entity.h"
+#include "ui/click_handler.h"
 
 namespace Ui {
 namespace Toast {
@@ -17,6 +18,8 @@ class Manager;
 class Widget;
 } // namespace internal
 
+using ClickHandlerFilter = Fn<bool(const ClickHandlerPtr&, Qt::MouseButton)>;
+
 inline constexpr auto kDefaultDuration = crl::time(1500);
 struct Config {
 	TextWithEntities text;
@@ -26,6 +29,7 @@ struct Config {
 	int maxWidth = 0;
 	int maxLines = 16;
 	bool multiline = false;
+	ClickHandlerFilter filter;
 };
 void SetDefaultParent(not_null<QWidget*> parent);
 void Show(not_null<QWidget*> parent, const Config &config);

ui/toast/toast_widget.cpp

@@ -24,7 +24,8 @@ Widget::Widget(QWidget *parent, const Config &config)
 , _maxTextWidth(widthWithoutPadding(_maxWidth))
 , _maxTextHeight(
 	st::toastTextStyle.font->height * (_multiline ? config.maxLines : 1))
-, _text(_multiline ? widthWithoutPadding(config.minWidth) : QFIXED_MAX) {
+, _text(_multiline ? widthWithoutPadding(config.minWidth) : QFIXED_MAX)
+, _clickHandlerFilter(config.filter) {
 	const auto toastOptions = TextParseOptions{
 		TextParseMultiline,
 		_maxTextWidth,
@@ -116,11 +117,14 @@ void Widget::mouseReleaseEvent(QMouseEvent *e) {
 		return;
 	}
 	if (const auto handler = ClickHandler::unpressed()) {
-		handler->onClick({ e->button() });
+		const auto button = e->button();
+		if (!_clickHandlerFilter
+			|| _clickHandlerFilter(handler, button)) {
+			ActivateClickHandler(this, handler, button);
+		}
 	}
 }
 
-
 } // namespace internal
 } // namespace Toast
 } // namespace Ui

ui/toast/toast_widget.h

@@ -49,6 +49,8 @@ private:
 	int _textWidth = 0;
 	Text::String _text;
 
+	ClickHandlerFilter _clickHandlerFilter;
+
 };
 
 } // namespace internal