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Telegram/lib_ui/ui/basic_click_handlers.h

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+// This file is part of Desktop App Toolkit,
+// a set of libraries for developing nice desktop applications.
+//
+// For license and copyright information please follow this link:
+// https://github.com/desktop-app/legal/blob/master/LEGAL
+//
+#pragma once
+
+#include "base/algorithm.h"
+#include "ui/click_handler.h"
+
+class TextClickHandler : public ClickHandler {
+public:
+	TextClickHandler(bool fullDisplayed = true)
+	: _fullDisplayed(fullDisplayed) {
+	}
+
+	QString copyToClipboardText() const override {
+		return url();
+	}
+
+	QString tooltip() const override {
+		return _fullDisplayed ? QString() : readable();
+	}
+
+	void setFullDisplayed(bool full) {
+		_fullDisplayed = full;
+	}
+
+protected:
+	virtual QString readable() const;
+
+	bool _fullDisplayed;
+
+};
+
+class UrlClickHandler : public TextClickHandler {
+public:
+	UrlClickHandler(const QString &url, bool fullDisplayed = true);
+
+	[[nodiscard]] QString originalUrl() const {
+		return _originalUrl;
+	}
+
+	QString copyToClipboardContextItemText() const override;
+
+	QString dragText() const override {
+		return url();
+	}
+
+	TextEntity getTextEntity() const override;
+
+	static void Open(QString url, QVariant context = {});
+	void onClick(ClickContext context) const override {
+		const auto button = context.button;
+		if (button == Qt::LeftButton || button == Qt::MiddleButton) {
+			Open(url(), context.other);
+		}
+	}
+
+	[[nodiscard]] static bool IsEmail(const QString &url) {
+		const auto at = url.indexOf('@'), slash = url.indexOf('/');
+		return ((at > 0) && (slash < 0 || slash > at));
+	}
+	[[nodiscard]] static QString EncodeForOpening(const QString &originalUrl);
+	[[nodiscard]] static bool IsSuspicious(const QString &url);
+	[[nodiscard]] static QString ShowEncoded(const QString &url);
+
+protected:
+	QString url() const override {
+		return EncodeForOpening(_originalUrl);
+	}
+	QString readable() const override {
+		return _readable;
+	}
+
+private:
+	[[nodiscard]] bool isEmail() const {
+		return IsEmail(_originalUrl);
+	}
+
+	QString _originalUrl, _readable;
+
+};