TaskChatbox.hpp

/*
    TaskChatbox.hpp
    Copyright (C) 2022  shezik

    This program is licensed under GNU General Public License version 3, and
    is part of project Lorim.
    Please refer to Lorim.ino and LICENSE for details.
*/

#pragma once

#include "Lorim_definitions.hpp"
#include "TaskBase.hpp"
#include "Mailbox.hpp"
#include "TaskManager.hpp"
#include "MultitapIM.hpp"
#include "SpicedU8g2.hpp"

enum scrollDirection {
    None, PrevLine, NextLine, PrevPage, NextPage, Beginning, End
};

class TaskChatbox : public TaskBase {
    private:
        TaskManager &parentManager;
        SpicedU8g2 &u8g2;
        Mailbox &mailbox;
        FS &lilFS;
        File file;
        MultitapIM *multitapIM;

        void allocateMem();
        void freeMem();
        void setDrawingStyle();
        void drawDisplay(scrollDirection direction, bool doDrawElements, bool doSendBuffer, bool showMsgCount = false);
        void quitEditMode(bool sendMsg);

        // left and right border of printPage file position range
        uint16_t filePointer = 0;
        // the following two variables only get updated on calling drawDisplay()
        uint16_t pageEndPointer = 0;
        size_t fileSizeBuf = 0;

        char inputBuffer[MAX_INPUT_LENGTH + 1] = {'\0'};
        char oldInputBuffer[MAX_INPUT_LENGTH + 1] = {'\0'};
        bool editMode = false;

        uint16_t printPage(File &file, uint16_t _startPos, bool doPrint);
        uint16_t printLine(File &file, uint16_t _startPos, uint8_t y, bool doPrint);
        uint16_t findPrevLine(File &file, uint16_t _startPos);
        uint16_t findNextLine(File &file, uint16_t _startPos);
        uint16_t findPrevPage(File &file, uint16_t _startPos);
        uint16_t findNextPage(File &file, uint16_t _startPos);

    public:
        TaskChatbox(TaskManager &_parentManager, SpicedU8g2 &_u8g2, Mailbox &_mailbox);
        ~TaskChatbox() override;
        void init() override;
        void tick(int16_t keycode) override;
        void refreshDisplay() override;
        uint8_t getTaskID() override {return ID_CHATBOX;}

};