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Telegram/SourceFiles/chat_helpers/field_autocomplete.h

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+/*
+This file is part of Telegram Desktop,
+the official desktop application for the Telegram messaging service.
+
+For license and copyright information please follow this link:
+https://github.com/telegramdesktop/tdesktop/blob/master/LEGAL
+*/
+#pragma once
+
+#include "api/api_common.h"
+#include "ui/effects/animations.h"
+#include "ui/effects/message_sending_animation_common.h"
+#include "ui/rp_widget.h"
+#include "base/timer.h"
+#include "base/object_ptr.h"
+
+namespace style {
+struct EmojiPan;
+} // namespace style
+
+namespace Ui {
+class PopupMenu;
+class ScrollArea;
+class InputField;
+} // namespace Ui
+
+namespace Lottie {
+class SinglePlayer;
+class FrameRenderer;
+} // namespace Lottie;
+
+namespace Main {
+class Session;
+} // namespace Main
+
+namespace Window {
+class SessionController;
+} // namespace Window
+
+namespace Data {
+class DocumentMedia;
+} // namespace Data
+
+namespace SendMenu {
+struct Details;
+} // namespace SendMenu
+
+namespace ChatHelpers {
+
+struct ComposeFeatures;
+struct FileChosen;
+class Show;
+
+enum class FieldAutocompleteChooseMethod {
+	ByEnter,
+	ByTab,
+	ByClick,
+};
+
+class FieldAutocomplete final : public Ui::RpWidget {
+public:
+	FieldAutocomplete(
+		QWidget *parent,
+		std::shared_ptr<Show> show,
+		const style::EmojiPan *stOverride = nullptr);
+	~FieldAutocomplete();
+
+	[[nodiscard]] std::shared_ptr<Show> uiShow() const;
+
+	bool clearFilteredBotCommands();
+	void showFiltered(
+		not_null<PeerData*> peer,
+		QString query,
+		bool addInlineBots);
+
+	void showStickers(EmojiPtr emoji);
+	[[nodiscard]] EmojiPtr stickersEmoji() const;
+
+	void setBoundings(QRect boundings);
+
+	[[nodiscard]] const QString &filter() const;
+	[[nodiscard]] ChatData *chat() const;
+	[[nodiscard]] ChannelData *channel() const;
+	[[nodiscard]] UserData *user() const;
+
+	[[nodiscard]] int32 innerTop();
+	[[nodiscard]] int32 innerBottom();
+
+	bool eventFilter(QObject *obj, QEvent *e) override;
+
+	using ChooseMethod = FieldAutocompleteChooseMethod;
+	struct MentionChosen {
+		not_null<UserData*> user;
+		QString mention;
+		ChooseMethod method = ChooseMethod::ByEnter;
+	};
+	struct HashtagChosen {
+		QString hashtag;
+		ChooseMethod method = ChooseMethod::ByEnter;
+	};
+	struct BotCommandChosen {
+		not_null<UserData*> user;
+		QString command;
+		ChooseMethod method = ChooseMethod::ByEnter;
+	};
+	using StickerChosen = FileChosen;
+	enum class Type {
+		Mentions,
+		Hashtags,
+		BotCommands,
+		Stickers,
+	};
+
+	bool chooseSelected(ChooseMethod method) const;
+
+	[[nodiscard]] bool stickersShown() const {
+		return !_srows.empty();
+	}
+
+	[[nodiscard]] bool overlaps(const QRect &globalRect) {
+		if (isHidden() || !testAttribute(Qt::WA_OpaquePaintEvent)) {
+			return false;
+		}
+		return rect().contains(QRect(mapFromGlobal(globalRect.topLeft()), globalRect.size()));
+	}
+
+	void setModerateKeyActivateCallback(Fn<bool(int)> callback) {
+		_moderateKeyActivateCallback = std::move(callback);
+	}
+	void setSendMenuDetails(Fn<SendMenu::Details()> &&callback);
+
+	void hideFast();
+	void showAnimated();
+	void hideAnimated();
+
+	void requestRefresh();
+	[[nodiscard]] rpl::producer<> refreshRequests() const;
+	void requestStickersUpdate();
+	[[nodiscard]] rpl::producer<> stickersUpdateRequests() const;
+
+	[[nodiscard]] rpl::producer<MentionChosen> mentionChosen() const;
+	[[nodiscard]] rpl::producer<HashtagChosen> hashtagChosen() const;
+	[[nodiscard]] rpl::producer<BotCommandChosen> botCommandChosen() const;
+	[[nodiscard]] rpl::producer<StickerChosen> stickerChosen() const;
+	[[nodiscard]] rpl::producer<Type> choosingProcesses() const;
+
+protected:
+	void paintEvent(QPaintEvent *e) override;
+
+private:
+	class Inner;
+	friend class Inner;
+	struct StickerSuggestion;
+	struct MentionRow;
+	struct BotCommandRow;
+
+	using HashtagRows = std::vector<QString>;
+	using BotCommandRows = std::vector<BotCommandRow>;
+	using StickerRows = std::vector<StickerSuggestion>;
+	using MentionRows = std::vector<MentionRow>;
+
+	void animationCallback();
+	void hideFinish();
+
+	void updateFiltered(bool resetScroll = false);
+	void recount(bool resetScroll = false);
+	StickerRows getStickerSuggestions();
+
+	const std::shared_ptr<Show> _show;
+	const not_null<Main::Session*> _session;
+	const style::EmojiPan &_st;
+	QPixmap _cache;
+	MentionRows _mrows;
+	HashtagRows _hrows;
+	BotCommandRows _brows;
+	StickerRows _srows;
+
+	void rowsUpdated(
+		MentionRows &&mrows,
+		HashtagRows &&hrows,
+		BotCommandRows &&brows,
+		StickerRows &&srows,
+		bool resetScroll);
+
+	object_ptr<Ui::ScrollArea> _scroll;
+	QPointer<Inner> _inner;
+
+	ChatData *_chat = nullptr;
+	UserData *_user = nullptr;
+	ChannelData *_channel = nullptr;
+	EmojiPtr _emoji;
+	uint64 _stickersSeed = 0;
+	Type _type = Type::Mentions;
+	QString _filter;
+	QRect _boundings;
+	bool _addInlineBots;
+
+	bool _hiding = false;
+
+	Ui::Animations::Simple _a_opacity;
+	rpl::event_stream<> _refreshRequests;
+	rpl::event_stream<> _stickersUpdateRequests;
+
+	Fn<bool(int)> _moderateKeyActivateCallback;
+
+};
+
+struct FieldAutocompleteDescriptor {
+	not_null<QWidget*> parent;
+	std::shared_ptr<Show> show;
+	not_null<Ui::InputField*> field;
+	const style::EmojiPan *stOverride = nullptr;
+	not_null<PeerData*> peer;
+	Fn<ComposeFeatures()> features;
+	Fn<SendMenu::Details()> sendMenuDetails;
+	Fn<void()> stickerChoosing;
+	Fn<void(FileChosen&&)> stickerChosen;
+	Fn<void(TextWithTags)> setText;
+	Fn<void(QString)> sendBotCommand;
+	Fn<void(QString)> processShortcut;
+	Fn<bool(int)> moderateKeyActivateCallback;
+};
+void InitFieldAutocomplete(
+	std::unique_ptr<FieldAutocomplete> &autocomplete,
+	FieldAutocompleteDescriptor &&descriptor);
+
+} // namespace ChatHelpers