squawk/shared/global.h

/*
 * Squawk messenger. 
 * Copyright (C) 2019  Yury Gubich <blue@macaw.me>
 * 
 * This program 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.
 * 
 * This program 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.
 * 
 * You should have received a copy of the GNU General Public License
 * along with this program.  If not, see <http://www.gnu.org/licenses/>.
 */

#pragma once

#include "enums.h"
#include "message.h"
#include "exception.h"

#include <map>
#include <set>
#include <deque>

#include <QApplication>
#include <QStyle>
#include <QDebug>
#include <QMimeType>
#include <QMimeDatabase>
#include <QFileInfo>
#include <QImage>
#include <QMovie>
#include <QSize>
#include <QUrl>
#include <QLibrary>
#include <QFileInfo>
#include <QProcess>
#include <QDesktopServices>
#include <QRegularExpression>
#include <QFont>
#include <QFontMetrics>

namespace Shared {
    
    class Global {
    public:
        struct FileInfo {
            enum class Preview {
                none,
                picture,
                animation
            };
            
            QString path;
            QString name;
            QSize size;
            QMimeType mime;
            Preview preview;
        };
        
        Global();

        static Global* getInstance();
        static QString getName(Availability av);
        static QString getName(ConnectionState cs);
        static QString getName(SubscriptionState ss);
        static QString getName(Affiliation af);
        static QString getName(Role rl);
        static QString getName(Message::State rl);
        static QString getName(AccountPassword ap);
        static QString getName(TrustLevel tl);
        static QString getName(EncryptionProtocol ep);
        
        static QString getDescription(AccountPassword ap);
        
        const std::deque<QString> availability;
        const std::deque<QString> connectionState;
        const std::deque<QString> subscriptionState;
        const std::deque<QString> affiliation;
        const std::deque<QString> role;
        const std::deque<QString> messageState;
        const std::deque<QString> accountPassword;
        const std::deque<QString> trustLevel;
        const std::deque<QString> encryptionProtocols;
        
        const std::deque<QString> accountPasswordDescription;

        const QString defaultSystemStyle;
        const QPalette defaultSystemPalette;
        
        static bool supported(const QString& pluginName);
        static void setSupported(const QString& pluginName, bool support);
        
        static const std::set<QString> supportedImagesExts;
        
        static FileInfo getFileInfo(const QString& path);
        static void highlightInFileManager(const QString& path);
        static QIcon createThemePreview(const QString& path);
        static QString getColorSchemeName(const QString& path);
        static void setTheme(const QString& path);
        static void setStyle(const QString& style);
        const bool omemoSupport;
        QFont defaultFont;
        QFont monospaceFont;
        QFont smallFont;
        QFont headerFont;
        QFont titleFont;
        QFontMetrics defaultFontMetrics;
        QFontMetrics monospaceMetrics;
        QFontMetrics smallFontMetrics;
        QFontMetrics headerFontMetrics;
        QFontMetrics titleFontMetrics;
        
        template<typename T>
        static T fromInt(int src);
        
        template<typename T>
        static T fromInt(unsigned int src);
        
        class EnumOutOfRange: public Utils::Exception {
        public:
            EnumOutOfRange(const std::string& p_name):Exception(), name(p_name) {}

            std::string getMessage() const{
                return "An attempt to get enum " + name + " from integer out of range of that enum";
            }
        private:
            std::string name;
        };
        
    private:
        static Global* instance;
        
        std::map<QString, bool> optionalFeatures;
        std::map<QString, FileInfo> fileCache;
        
#ifdef WITH_KIO
        static QLibrary openFileManagerWindowJob;
        
        typedef void (*HighlightInFileManager)(const QUrl &);
        
        static HighlightInFileManager hfm;
#endif

#ifdef WITH_KCONFIG
        static QLibrary colorSchemeTools;

        typedef QIcon* (*CreatePreview)(const QString&);
        typedef void (*DeletePreview)(QIcon*);
        typedef void (*ColorSchemeName)(const QString&, QString&);
        typedef void (*CreatePalette)(const QString&, QPalette&);

        static CreatePreview createPreview;
        static DeletePreview deletePreview;
        static ColorSchemeName colorSchemeName;
        static CreatePalette createPalette;
#endif
    };
}