tdesktop/Telegram/SourceFiles/history/history_media.h

/*
This file is part of Telegram Desktop,
the official desktop version of Telegram messaging app, see https://telegram.org

Telegram Desktop is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.

It is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.

In addition, as a special exception, the copyright holders give permission
to link the code of portions of this program with the OpenSSL library.

Full license: https://github.com/telegramdesktop/tdesktop/blob/master/LICENSE
Copyright (c) 2014-2016 John Preston, https://desktop.telegram.org
*/
#pragma once

void historyInitMedia();

class RadialAnimation {
public:
	RadialAnimation(AnimationCallbacks &&callbacks);

	float64 opacity() const {
		return _opacity;
	}
	bool animating() const {
		return _animation.animating();
	}

	void start(float64 prg);
	void update(float64 prg, bool finished, uint64 ms);
	void stop();

	void step(uint64 ms);
	void step() {
		step(getms());
	}

	void draw(Painter &p, const QRect &inner, int32 thickness, const style::color &color);

private:
	uint64 _firstStart = 0;
	uint64 _lastStart = 0;
	uint64 _lastTime = 0;
	float64 _opacity = 0.;
	anim::ivalue a_arcEnd, a_arcStart;
	Animation _animation;

};

class HistoryMedia : public HistoryElement {
public:
	HistoryMedia(HistoryItem *parent) : _parent(parent) {
	}

	virtual HistoryMediaType type() const = 0;

	virtual QString notificationText() const {
		return QString();
	}

	// Returns text with link-start and link-end commands for service-color highlighting.
	// Example: "[link1-start]You:[link1-end] [link1-start]Photo,[link1-end] caption text"
	virtual QString inDialogsText() const;
	virtual TextWithEntities selectedText(TextSelection selection) const = 0;

	bool hasPoint(int x, int y) const {
		return (x >= 0 && y >= 0 && x < _width && y < _height);
	}

	virtual bool isDisplayed() const {
		return true;
	}
	virtual bool isAboveMessage() const {
		return false;
	}
	virtual bool hasTextForCopy() const {
		return false;
	}
	virtual void initDimensions() = 0;
	virtual int resizeGetHeight(int width) {
		_width = qMin(width, _maxw);
		return _height;
	}
	virtual void draw(Painter &p, const QRect &r, TextSelection selection, uint64 ms) const = 0;
	virtual HistoryTextState getState(int x, int y, HistoryStateRequest request) const = 0;

	// if we are in selecting items mode perhaps we want to
	// toggle selection instead of activating the pressed link
	virtual bool toggleSelectionByHandlerClick(const ClickHandlerPtr &p) const = 0;

	// if we press and drag on this media should we drag the item
	virtual bool dragItem() const {
		return false;
	}

	virtual TextSelection adjustSelection(TextSelection selection, TextSelectType type) const {
		return selection;
	}

	// if we press and drag this link should we drag the item
	virtual bool dragItemByHandler(const ClickHandlerPtr &p) const = 0;

	virtual void clickHandlerActiveChanged(const ClickHandlerPtr &p, bool active) {
	}
	virtual void clickHandlerPressedChanged(const ClickHandlerPtr &p, bool pressed) {
	}

	virtual bool uploading() const {
		return false;
	}
	virtual HistoryMedia *clone(HistoryItem *newParent) const = 0;

	virtual DocumentData *getDocument() {
		return nullptr;
	}
	virtual Media::Clip::Reader *getClipReader() {
		return nullptr;
	}

	bool playInline(/*bool autoplay = false*/) {
		return playInline(false);
	}
	virtual bool playInline(bool autoplay) {
		return false;
	}
	virtual void stopInline() {
	}

	virtual void attachToParent() {
	}

	virtual void detachFromParent() {
	}

	virtual void updateSentMedia(const MTPMessageMedia &media) {
	}

	// After sending an inline result we may want to completely recreate
	// the media (all media that was generated on client side, for example)
	virtual bool needReSetInlineResultMedia(const MTPMessageMedia &media) {
		return true;
	}

	virtual bool animating() const {
		return false;
	}

	virtual bool hasReplyPreview() const {
		return false;
	}
	virtual ImagePtr replyPreview() {
		return ImagePtr();
	}
	virtual TextWithEntities getCaption() const {
		return TextWithEntities();
	}
	virtual bool needsBubble() const = 0;
	virtual bool customInfoLayout() const = 0;
	virtual QMargins bubbleMargins() const {
		return QMargins();
	}
	virtual bool hideFromName() const {
		return false;
	}
	virtual bool hideForwardedFrom() const {
		return false;
	}

	int currentWidth() const {
		return _width;
	}

protected:
	HistoryItem *_parent;
	int _width = 0;

};

class HistoryFileMedia : public HistoryMedia {
public:
	using HistoryMedia::HistoryMedia;

	bool toggleSelectionByHandlerClick(const ClickHandlerPtr &p) const override {
		return p == _openl || p == _savel || p == _cancell;
	}
	bool dragItemByHandler(const ClickHandlerPtr &p) const override {
		return p == _openl || p == _savel || p == _cancell;
	}

	void clickHandlerActiveChanged(const ClickHandlerPtr &p, bool active) override;
	void clickHandlerPressedChanged(const ClickHandlerPtr &p, bool pressed) override;

	~HistoryFileMedia();

protected:
	ClickHandlerPtr _openl, _savel, _cancell;
	void setLinks(ClickHandlerPtr &&openl, ClickHandlerPtr &&savel, ClickHandlerPtr &&cancell);
	void setDocumentLinks(DocumentData *document, bool inlinegif = false) {
		ClickHandlerPtr open, save;
		if (inlinegif) {
			open.reset(new GifOpenClickHandler(document));
		} else {
			open.reset(new DocumentOpenClickHandler(document));
		}
		if (inlinegif) {
			save.reset(new GifOpenClickHandler(document));
		} else if (document->voice()) {
			save.reset(new DocumentOpenClickHandler(document));
		} else {
			save.reset(new DocumentSaveClickHandler(document));
		}
		setLinks(std_::move(open), std_::move(save), MakeShared<DocumentCancelClickHandler>(document));
	}

	// >= 0 will contain download / upload string, _statusSize = loaded bytes
	// < 0 will contain played string, _statusSize = -(seconds + 1) played
	// 0x7FFFFFF0 will contain status for not yet downloaded file
	// 0x7FFFFFF1 will contain status for already downloaded file
	// 0x7FFFFFF2 will contain status for failed to download / upload file
	mutable int32 _statusSize;
	mutable QString _statusText;

	// duration = -1 - no duration, duration = -2 - "GIF" duration
	void setStatusSize(int32 newSize, int32 fullSize, int32 duration, qint64 realDuration) const;

	void step_thumbOver(float64 ms, bool timer);
	void step_radial(uint64 ms, bool timer);

	void ensureAnimation() const;
	void checkAnimationFinished();

	bool isRadialAnimation(uint64 ms) const {
		if (!_animation || !_animation->radial.animating()) return false;

		_animation->radial.step(ms);
		return _animation && _animation->radial.animating();
	}
	bool isThumbAnimation(uint64 ms) const {
		if (!_animation || !_animation->_a_thumbOver.animating()) return false;

		_animation->_a_thumbOver.step(ms);
		return _animation && _animation->_a_thumbOver.animating();
	}

	virtual float64 dataProgress() const = 0;
	virtual bool dataFinished() const = 0;
	virtual bool dataLoaded() const = 0;

	struct AnimationData {
		AnimationData(AnimationCallbacks &&thumbOverCallbacks, AnimationCallbacks &&radialCallbacks) : a_thumbOver(0, 0)
			, _a_thumbOver(std_::move(thumbOverCallbacks))
			, radial(std_::move(radialCallbacks)) {
		}
		anim::fvalue a_thumbOver;
		Animation _a_thumbOver;

		RadialAnimation radial;
	};
	mutable AnimationData *_animation = nullptr;

};

class HistoryPhoto : public HistoryFileMedia {
public:
	HistoryPhoto(HistoryItem *parent, PhotoData *photo, const QString &caption);
	HistoryPhoto(HistoryItem *parent, PeerData *chat, const MTPDphoto &photo, int width);
	HistoryPhoto(HistoryItem *parent, const HistoryPhoto &other);

	void init();
	HistoryMediaType type() const override {
		return MediaTypePhoto;
	}
	HistoryPhoto *clone(HistoryItem *newParent) const override {
		return new HistoryPhoto(newParent, *this);
	}

	void initDimensions() override;
	int resizeGetHeight(int width) override;

	void draw(Painter &p, const QRect &r, TextSelection selection, uint64 ms) const override;
	HistoryTextState getState(int x, int y, HistoryStateRequest request) const override;

	TextSelection adjustSelection(TextSelection selection, TextSelectType type) const override {
		return _caption.adjustSelection(selection, type);
	}
	bool hasTextForCopy() const override {
		return !_caption.isEmpty();
	}

	QString notificationText() const override;
	QString inDialogsText() const override;
	TextWithEntities selectedText(TextSelection selection) const override;

	PhotoData *photo() const {
		return _data;
	}

	void updateSentMedia(const MTPMessageMedia &media) override;
	bool needReSetInlineResultMedia(const MTPMessageMedia &media) override;

	void attachToParent() override;
	void detachFromParent() override;

	bool hasReplyPreview() const override {
		return !_data->thumb->isNull();
	}
	ImagePtr replyPreview() override;

	TextWithEntities getCaption() const override {
		return _caption.originalTextWithEntities();
	}
	bool needsBubble() const override {
		if (!_caption.isEmpty()) {
			return true;
		}
		if (_parent->viaBot()) {
			return true;
		}
		return (_parent->Has<HistoryMessageForwarded>() || _parent->Has<HistoryMessageReply>());
	}
	bool customInfoLayout() const override {
		return _caption.isEmpty();
	}
	bool hideFromName() const override {
		return true;
	}

protected:
	float64 dataProgress() const override {
		return _data->progress();
	}
	bool dataFinished() const override {
		return !_data->loading() && !_data->uploading();
	}
	bool dataLoaded() const override {
		return _data->loaded();
	}

private:
	PhotoData *_data;
	int16 _pixw = 1;
	int16 _pixh = 1;
	Text _caption;

};

class HistoryVideo : public HistoryFileMedia {
public:
	HistoryVideo(HistoryItem *parent, DocumentData *document, const QString &caption);
	HistoryVideo(HistoryItem *parent, const HistoryVideo &other);
	HistoryMediaType type() const override {
		return MediaTypeVideo;
	}
	HistoryVideo *clone(HistoryItem *newParent) const override {
		return new HistoryVideo(newParent, *this);
	}

	void initDimensions() override;
	int resizeGetHeight(int width) override;

	void draw(Painter &p, const QRect &r, TextSelection selection, uint64 ms) const override;
	HistoryTextState getState(int x, int y, HistoryStateRequest request) const override;

	TextSelection adjustSelection(TextSelection selection, TextSelectType type) const override {
		return _caption.adjustSelection(selection, type);
	}
	bool hasTextForCopy() const override {
		return !_caption.isEmpty();
	}

	QString notificationText() const override;
	QString inDialogsText() const override;
	TextWithEntities selectedText(TextSelection selection) const override;

	DocumentData *getDocument() override {
		return _data;
	}

	bool uploading() const override {
		return _data->uploading();
	}

	void attachToParent() override;
	void detachFromParent() override;

	bool needReSetInlineResultMedia(const MTPMessageMedia &media) override;

	bool hasReplyPreview() const override {
		return !_data->thumb->isNull();
	}
	ImagePtr replyPreview() override;

	TextWithEntities getCaption() const override {
		return _caption.originalTextWithEntities();
	}
	bool needsBubble() const override {
		if (!_caption.isEmpty()) {
			return true;
		}
		if (_parent->viaBot()) {
			return true;
		}
		return (_parent->Has<HistoryMessageForwarded>() || _parent->Has<HistoryMessageReply>());
	}
	bool customInfoLayout() const override {
		return _caption.isEmpty();
	}
	bool hideFromName() const override {
		return true;
	}

protected:
	float64 dataProgress() const override {
		return _data->progress();
	}
	bool dataFinished() const override {
		return !_data->loading() && !_data->uploading();
	}
	bool dataLoaded() const override {
		return _data->loaded();
	}

private:
	DocumentData *_data;
	int32 _thumbw;
	Text _caption;

	void setStatusSize(int32 newSize) const;
	void updateStatusText() const;

};

struct HistoryDocumentThumbed : public BaseComponent<HistoryDocumentThumbed> {
	ClickHandlerPtr _linksavel, _linkcancell;
	int _thumbw = 0;

	mutable int _linkw = 0;
	mutable QString _link;
};
struct HistoryDocumentCaptioned : public BaseComponent<HistoryDocumentCaptioned> {
	Text _caption = { int(st::msgFileMinWidth) - st::msgPadding.left() - st::msgPadding.right() };
};
struct HistoryDocumentNamed : public BaseComponent<HistoryDocumentNamed> {
	QString _name;
	int _namew = 0;
};
class HistoryDocument;
struct HistoryDocumentVoicePlayback {
	HistoryDocumentVoicePlayback(const HistoryDocument *that);

	int32 _position;
	anim::fvalue a_progress;
	Animation _a_progress;
};
struct HistoryDocumentVoice : public BaseComponent<HistoryDocumentVoice> {
	HistoryDocumentVoice &operator=(HistoryDocumentVoice &&other) {
		std::swap(_playback, other._playback);
		return *this;
	}
	~HistoryDocumentVoice() {
		deleteAndMark(_playback);
	}
	void ensurePlayback(const HistoryDocument *interfaces) const;
	void checkPlaybackFinished() const;
	mutable HistoryDocumentVoicePlayback *_playback = nullptr;
};

class HistoryDocument : public HistoryFileMedia, public Composer {
public:
	HistoryDocument(HistoryItem *parent, DocumentData *document, const QString &caption);
	HistoryDocument(HistoryItem *parent, const HistoryDocument &other);
	HistoryMediaType type() const override {
		return _data->voice() ? MediaTypeVoiceFile : (_data->song() ? MediaTypeMusicFile : MediaTypeFile);
	}
	HistoryDocument *clone(HistoryItem *newParent) const override {
		return new HistoryDocument(newParent, *this);
	}

	void initDimensions() override;
	int resizeGetHeight(int width) override;

	void draw(Painter &p, const QRect &r, TextSelection selection, uint64 ms) const override;
	HistoryTextState getState(int x, int y, HistoryStateRequest request) const override;

	TextSelection adjustSelection(TextSelection selection, TextSelectType type) const override {
		if (auto captioned = Get<HistoryDocumentCaptioned>()) {
			return captioned->_caption.adjustSelection(selection, type);
		}
		return selection;
	}
	bool hasTextForCopy() const override {
		return Has<HistoryDocumentCaptioned>();
	}

	QString notificationText() const override;
	QString inDialogsText() const override;
	TextWithEntities selectedText(TextSelection selection) const override;

	bool uploading() const override {
		return _data->uploading();
	}

	DocumentData *getDocument() override {
		return _data;
	}

	void attachToParent() override;
	void detachFromParent() override;

	void updateSentMedia(const MTPMessageMedia &media) override;
	bool needReSetInlineResultMedia(const MTPMessageMedia &media) override;

	bool hasReplyPreview() const override {
		return !_data->thumb->isNull();
	}
	ImagePtr replyPreview() override;

	TextWithEntities getCaption() const override {
		if (const HistoryDocumentCaptioned *captioned = Get<HistoryDocumentCaptioned>()) {
			return captioned->_caption.originalTextWithEntities();
		}
		return TextWithEntities();
	}
	bool needsBubble() const override {
		return true;
	}
	bool customInfoLayout() const override {
		return false;
	}
	QMargins bubbleMargins() const override {
		return Get<HistoryDocumentThumbed>() ? QMargins(st::msgFileThumbPadding.left(), st::msgFileThumbPadding.top(), st::msgFileThumbPadding.left(), st::msgFileThumbPadding.bottom()) : st::msgPadding;
	}
	bool hideForwardedFrom() const override {
		return _data->song();
	}

	void step_voiceProgress(float64 ms, bool timer);

protected:
	float64 dataProgress() const override {
		return _data->progress();
	}
	bool dataFinished() const override {
		return !_data->loading() && !_data->uploading();
	}
	bool dataLoaded() const override {
		return _data->loaded();
	}

private:
	void createComponents(bool caption);

	void setStatusSize(int32 newSize, qint64 realDuration = 0) const;
	bool updateStatusText() const; // returns showPause

								   // Callback is a void(const QString &, const QString &, const Text &) functor.
								   // It will be called as callback(attachType, attachFileName, attachCaption).
	template <typename Callback>
	void buildStringRepresentation(Callback callback) const;

	DocumentData *_data;

};

class HistoryGif : public HistoryFileMedia {
public:
	HistoryGif(HistoryItem *parent, DocumentData *document, const QString &caption);
	HistoryGif(HistoryItem *parent, const HistoryGif &other);
	HistoryMediaType type() const override {
		return MediaTypeGif;
	}
	HistoryGif *clone(HistoryItem *newParent) const override {
		return new HistoryGif(newParent, *this);
	}

	void initDimensions() override;
	int resizeGetHeight(int width) override;

	void draw(Painter &p, const QRect &r, TextSelection selection, uint64 ms) const override;
	HistoryTextState getState(int x, int y, HistoryStateRequest request) const override;

	TextSelection adjustSelection(TextSelection selection, TextSelectType type) const override {
		return _caption.adjustSelection(selection, type);
	}
	bool hasTextForCopy() const override {
		return !_caption.isEmpty();
	}

	QString notificationText() const override;
	QString inDialogsText() const override;
	TextWithEntities selectedText(TextSelection selection) const override;

	bool uploading() const override {
		return _data->uploading();
	}

	DocumentData *getDocument() override {
		return _data;
	}
	Media::Clip::Reader *getClipReader() override {
		return gif();
	}

	bool playInline(bool autoplay) override;
	void stopInline() override;

	void attachToParent() override;
	void detachFromParent() override;

	void updateSentMedia(const MTPMessageMedia &media) override;
	bool needReSetInlineResultMedia(const MTPMessageMedia &media) override;

	bool hasReplyPreview() const override {
		return !_data->thumb->isNull();
	}
	ImagePtr replyPreview() override;

	TextWithEntities getCaption() const override {
		return _caption.originalTextWithEntities();
	}
	bool needsBubble() const override {
		if (!_caption.isEmpty()) {
			return true;
		}
		if (_parent->viaBot()) {
			return true;
		}
		return (_parent->Has<HistoryMessageForwarded>() || _parent->Has<HistoryMessageReply>());
	}
	bool customInfoLayout() const override {
		return _caption.isEmpty();
	}
	bool hideFromName() const override {
		return true;
	}

	~HistoryGif();

protected:
	float64 dataProgress() const override;
	bool dataFinished() const override;
	bool dataLoaded() const override;

private:
	DocumentData *_data;
	int32 _thumbw, _thumbh;
	Text _caption;

	Media::Clip::Reader *_gif;
	Media::Clip::Reader *gif() {
		return (_gif == Media::Clip::BadReader) ? nullptr : _gif;
	}
	const Media::Clip::Reader *gif() const {
		return (_gif == Media::Clip::BadReader) ? nullptr : _gif;
	}

	void setStatusSize(int32 newSize) const;
	void updateStatusText() const;

};

class HistorySticker : public HistoryMedia {
public:
	HistorySticker(HistoryItem *parent, DocumentData *document);
	HistoryMediaType type() const override {
		return MediaTypeSticker;
	}
	HistorySticker *clone(HistoryItem *newParent) const override {
		return new HistorySticker(newParent, _data);
	}

	void initDimensions() override;
	int resizeGetHeight(int width) override;

	void draw(Painter &p, const QRect &r, TextSelection selection, uint64 ms) const override;
	HistoryTextState getState(int x, int y, HistoryStateRequest request) const override;

	bool toggleSelectionByHandlerClick(const ClickHandlerPtr &p) const override {
		return true;
	}
	bool dragItem() const override {
		return true;
	}
	bool dragItemByHandler(const ClickHandlerPtr &p) const override {
		return true;
	}

	QString notificationText() const override;
	TextWithEntities selectedText(TextSelection selection) const override;

	DocumentData *getDocument() override {
		return _data;
	}

	void attachToParent() override;
	void detachFromParent() override;

	void updateSentMedia(const MTPMessageMedia &media) override;
	bool needReSetInlineResultMedia(const MTPMessageMedia &media) override;

	bool needsBubble() const override {
		return false;
	}
	bool customInfoLayout() const override {
		return true;
	}

private:
	int additionalWidth(const HistoryMessageVia *via, const HistoryMessageReply *reply) const;
	int additionalWidth() const {
		return additionalWidth(_parent->Get<HistoryMessageVia>(), _parent->Get<HistoryMessageReply>());
	}
	QString toString() const;

	int16 _pixw, _pixh;
	ClickHandlerPtr _packLink;
	DocumentData *_data;
	QString _emoji;

};

class SendMessageClickHandler : public PeerClickHandler {
public:
	using PeerClickHandler::PeerClickHandler;
protected:
	void onClickImpl() const override;
};

class AddContactClickHandler : public MessageClickHandler {
public:
	using MessageClickHandler::MessageClickHandler;
protected:
	void onClickImpl() const override;
};

class HistoryContact : public HistoryMedia {
public:
	HistoryContact(HistoryItem *parent, int32 userId, const QString &first, const QString &last, const QString &phone);
	HistoryMediaType type() const override {
		return MediaTypeContact;
	}
	HistoryContact *clone(HistoryItem *newParent) const override {
		return new HistoryContact(newParent, _userId, _fname, _lname, _phone);
	}

	void initDimensions() override;

	void draw(Painter &p, const QRect &r, TextSelection selection, uint64 ms) const override;
	HistoryTextState getState(int x, int y, HistoryStateRequest request) const override;

	bool toggleSelectionByHandlerClick(const ClickHandlerPtr &p) const override {
		return true;
	}
	bool dragItemByHandler(const ClickHandlerPtr &p) const override {
		return true;
	}

	QString notificationText() const override;
	TextWithEntities selectedText(TextSelection selection) const override;

	void attachToParent() override;
	void detachFromParent() override;

	void updateSentMedia(const MTPMessageMedia &media) override;

	bool needsBubble() const override {
		return true;
	}
	bool customInfoLayout() const override {
		return false;
	}

	const QString &fname() const {
		return _fname;
	}
	const QString &lname() const {
		return _lname;
	}
	const QString &phone() const {
		return _phone;
	}

private:

	int32 _userId;
	UserData *_contact;

	int32 _phonew;
	QString _fname, _lname, _phone;
	Text _name;

	ClickHandlerPtr _linkl;
	int32 _linkw;
	QString _link;
};

class HistoryWebPage : public HistoryMedia {
public:
	HistoryWebPage(HistoryItem *parent, WebPageData *data);
	HistoryWebPage(HistoryItem *parent, const HistoryWebPage &other);
	HistoryMediaType type() const override {
		return MediaTypeWebPage;
	}
	HistoryWebPage *clone(HistoryItem *newParent) const override {
		return new HistoryWebPage(newParent, *this);
	}

	void initDimensions() override;
	int resizeGetHeight(int width) override;

	void draw(Painter &p, const QRect &r, TextSelection selection, uint64 ms) const override;
	HistoryTextState getState(int x, int y, HistoryStateRequest request) const override;

	TextSelection adjustSelection(TextSelection selection, TextSelectType type) const override;
	bool hasTextForCopy() const override {
		return false; // we do not add _title and _description in FullSelection text copy.
	}

	bool toggleSelectionByHandlerClick(const ClickHandlerPtr &p) const override {
		return _attach && _attach->toggleSelectionByHandlerClick(p);
	}
	bool dragItemByHandler(const ClickHandlerPtr &p) const override {
		return _attach && _attach->dragItemByHandler(p);
	}

	TextWithEntities selectedText(TextSelection selection) const override;

	void clickHandlerActiveChanged(const ClickHandlerPtr &p, bool active) override;
	void clickHandlerPressedChanged(const ClickHandlerPtr &p, bool pressed) override;

	bool isDisplayed() const override {
		return !_data->pendingTill;
	}
	DocumentData *getDocument() override {
		return _attach ? _attach->getDocument() : 0;
	}
	Media::Clip::Reader *getClipReader() override {
		return _attach ? _attach->getClipReader() : 0;
	}
	bool playInline(bool autoplay) override {
		return _attach ? _attach->playInline(autoplay) : false;
	}
	void stopInline() override {
		if (_attach) _attach->stopInline();
	}

	void attachToParent() override;
	void detachFromParent() override;

	bool hasReplyPreview() const override {
		return (_data->photo && !_data->photo->thumb->isNull()) || (_data->document && !_data->document->thumb->isNull());
	}
	ImagePtr replyPreview() override;

	WebPageData *webpage() {
		return _data;
	}

	bool needsBubble() const override {
		return true;
	}
	bool customInfoLayout() const override {
		return false;
	}

	HistoryMedia *attach() const {
		return _attach.get();
	}

private:
	TextSelection toDescriptionSelection(TextSelection selection) const {
		return internal::unshiftSelection(selection, _title);
	}
	TextSelection fromDescriptionSelection(TextSelection selection) const {
		return internal::shiftSelection(selection, _title);
	}

	WebPageData *_data;
	ClickHandlerPtr _openl;
	std_::unique_ptr<HistoryMedia> _attach;

	bool _asArticle = false;
	int32 _titleLines, _descriptionLines;

	Text _title, _description;
	int32 _siteNameWidth = 0;

	QString _duration;
	int32 _durationWidth = 0;

	int16 _pixw = 0;
	int16 _pixh = 0;
};

class HistoryGame : public HistoryMedia {
public:
	HistoryGame(HistoryItem *parent, GameData *data);
	HistoryGame(HistoryItem *parent, const HistoryGame &other);
	HistoryMediaType type() const override {
		return MediaTypeGame;
	}
	HistoryGame *clone(HistoryItem *newParent) const override {
		return new HistoryGame(newParent, *this);
	}

	void initDimensions() override;
	int resizeGetHeight(int width) override;

	void draw(Painter &p, const QRect &r, TextSelection selection, uint64 ms) const override;
	HistoryTextState getState(int x, int y, HistoryStateRequest request) const override;

	TextSelection adjustSelection(TextSelection selection, TextSelectType type) const override;
	bool isAboveMessage() const override {
		return true;
	}
	bool hasTextForCopy() const override {
		return false; // we do not add _title and _description in FullSelection text copy.
	}

	bool toggleSelectionByHandlerClick(const ClickHandlerPtr &p) const override {
		return _attach && _attach->toggleSelectionByHandlerClick(p);
	}
	bool dragItemByHandler(const ClickHandlerPtr &p) const override {
		return _attach && _attach->dragItemByHandler(p);
	}

	TextWithEntities selectedText(TextSelection selection) const override;

	void clickHandlerActiveChanged(const ClickHandlerPtr &p, bool active) override;
	void clickHandlerPressedChanged(const ClickHandlerPtr &p, bool pressed) override;

	DocumentData *getDocument() override {
		return _attach ? _attach->getDocument() : nullptr;
	}
	Media::Clip::Reader *getClipReader() override {
		return _attach ? _attach->getClipReader() : nullptr;
	}
	bool playInline(bool autoplay) override {
		return _attach ? _attach->playInline(autoplay) : false;
	}
	void stopInline() override {
		if (_attach) _attach->stopInline();
	}

	void attachToParent() override;
	void detachFromParent() override;

	bool hasReplyPreview() const override {
		return (_data->photo && !_data->photo->thumb->isNull()) || (_data->document && !_data->document->thumb->isNull());
	}
	ImagePtr replyPreview() override;

	GameData *game() {
		return _data;
	}

	bool needsBubble() const override {
		return true;
	}
	bool customInfoLayout() const override {
		return false;
	}

	HistoryMedia *attach() const {
		return _attach.get();
	}

private:
	TextSelection toDescriptionSelection(TextSelection selection) const {
		return internal::unshiftSelection(selection, _title);
	}
	TextSelection fromDescriptionSelection(TextSelection selection) const {
		return internal::shiftSelection(selection, _title);
	}

	GameData *_data;
	ClickHandlerPtr _openl;
	std_::unique_ptr<HistoryMedia> _attach;

	int32 _titleLines, _descriptionLines;

	Text _title, _description;

};

struct LocationCoords;
struct LocationData;

class HistoryLocation : public HistoryMedia {
public:
	HistoryLocation(HistoryItem *parent, const LocationCoords &coords, const QString &title = QString(), const QString &description = QString());
	HistoryLocation(HistoryItem *parent, const HistoryLocation &other);
	HistoryMediaType type() const override {
		return MediaTypeLocation;
	}
	HistoryLocation *clone(HistoryItem *newParent) const override {
		return new HistoryLocation(newParent, *this);
	}

	void initDimensions() override;
	int resizeGetHeight(int32 width) override;

	void draw(Painter &p, const QRect &r, TextSelection selection, uint64 ms) const override;
	HistoryTextState getState(int x, int y, HistoryStateRequest request) const override;

	TextSelection adjustSelection(TextSelection selection, TextSelectType type) const override;
	bool hasTextForCopy() const override {
		return !_title.isEmpty() || !_description.isEmpty();
	}

	bool toggleSelectionByHandlerClick(const ClickHandlerPtr &p) const override {
		return p == _link;
	}
	bool dragItemByHandler(const ClickHandlerPtr &p) const override {
		return p == _link;
	}

	QString notificationText() const override;
	QString inDialogsText() const override;
	TextWithEntities selectedText(TextSelection selection) const override;

	bool needsBubble() const override {
		if (!_title.isEmpty() || !_description.isEmpty()) {
			return true;
		}
		if (_parent->viaBot()) {
			return true;
		}
		return (_parent->Has<HistoryMessageForwarded>() || _parent->Has<HistoryMessageReply>());
	}
	bool customInfoLayout() const override {
		return true;
	}

private:
	TextSelection toDescriptionSelection(TextSelection selection) const {
		return internal::unshiftSelection(selection, _title);
	}
	TextSelection fromDescriptionSelection(TextSelection selection) const {
		return internal::shiftSelection(selection, _title);
	}

	LocationData *_data;
	Text _title, _description;
	ClickHandlerPtr _link;

	int32 fullWidth() const;
	int32 fullHeight() const;

};