(*
    Copyright 2021 Anton Krotov

    This file is part of CEdit.

    CEdit 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.

    CEdit 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 CEdit. If not, see <http://www.gnu.org/licenses/>.
*)

MODULE CEdit;

IMPORT
    SYSTEM, OpenDlg, K := KolibriOS,
    U := Utils, Lines, Menu, List,
    G := Graph, T := Text, E := Encodings,
    CB := Clipboard, Languages,
    ChangeLog, Scroll,
    RW, Ini, box_lib, LibImg;

CONST
    header = "CEdit (20-may-2021)";

    ShellFilter = "";(* "SH|"; *)
    EditFilter = "SH|ASM|TXT|INC|OB07|C|CPP|H|PAS|PP|LUA|INI";

    fontWidth = K.fontWidth;
    fontHeight = K.fontHeight;
    scrollWidth = 22;

    btnClose = 1;
    btnNew = 20;
    btnOpen = 21;
    btnSave = 22;
    btnSearch = 23;
    btnUndo = 24;
    btnRedo = 25;
    btnUpper = 26;
    btnLower = 27;
    btnBuild = 28;
    btnRun = 29;
    btnUp = 30;
    btnDown = 31;
    btnLeft = 32;
    btnRight = 33;
    btnYes = 40;
    btnNo = 41;
    btnFindEdit = 50;
    btnReplaceEdit = 51;
    btnGotoEdit = 52;
    btnFindNext = 60;
    btnReplace = 61;
    btnReplaceAll = 62;
    btnGoto = 63;
    btnCloseFind = 64;

    btnFile = 70;
    btnEdit = 71;
    btnEncoding = 72;
    btnView = 73;
    btnSyntax = 74;
    btnProgram = 75;
    btnTools = 76;

    MainMenuHeight = fontHeight + 7;

    btnColor = 0CCCCCCH;
    btnHeight = 25;
    btnWidth = 75;
    btnTop = MainMenuHeight + 3;
    toolBtnSize = 24;
    toolbarDelim = 7;

    TOP = btnTop + toolBtnSize + 7;
    RIGHT = scrollWidth - 2;
    BOTTOM = scrollWidth + 25;

    winColor = K.winColor; minWinWidth = 635; minWinHeight = 542;

    toolbarColor = 0DFDFDFH;

    SEARCH_PADDING = 10;
    searchLeft = 10;
    EditBox_Width = 180;
    EDITBOX_MAXCHARS = 500;

    menuFileX = searchLeft;
    menuEditX = menuFileX + 4*fontWidth + 2 + 7;
    menuEncodingX = menuEditX + 4*fontWidth + 2 + 7;
    menuViewX = menuEncodingX + 8*fontWidth + 2 + 7;
    menuSyntaxX = menuViewX + 4*fontWidth + 2 + 7;
    menuProgramX = menuSyntaxX + 6*fontWidth + 2 + 7;
    menuToolsX = menuProgramX + 7*fontWidth + 2 + 7;

    menuCut = 1;
    menuCopy = 2;
    menuPaste = 3;
    menuDelete = 4;
    menuSelectAll = 5;

    menuUndo = 6;
    menuRedo = 7;

    menuSearch = 8;
    menuGoto = 9;

    menuNew = 10;
    menuOpen = 11;
    menuSave = 12;
    menuSaveAs = 13;
    menuFolder = 14;
    menuExit = 15;

    menuNumbers = 20;
    (*menuSettings = 21;*)
    menuColors = 1000;
    menuMaxColors = menuColors + Ini.MAX_SECTIONS - 1;

    menuNone = 30;
    menuC = 31;
    menuFasm = 32;
    menuIni = 33;
    menuLua = 34;
    menuOberon = 35;
    menuPascal = 36;

    menuBuild = 50;
    menuBuildScript = 51;
    menuRun = 52;
    menuRunScript = 53;
    menuDebug = 54;
    menuDebugScript = 55;

    menuUTF8BOM = 60;
    menuUTF8 = 61;
    menuCP866 = 62;
    menuWin1251 = 63;

    menuPipet = 70;
    menuSysFunc = 71;

VAR
    canvas: G.tCanvas;
    font: G.tFont;
    text: T.tText;
    winWidth, winHeight: INTEGER;
    shift: SET;
    AppPath, runScript, buildScript, debugScript: RW.tFileName;
    OD: OpenDlg.Dialog;
    confirm, notFound, search, modified: BOOLEAN;

    leftButton, VScroll, HScroll: BOOLEAN;
    vScroll, hScroll: Scroll.tScroll;
    LEFT: INTEGER;

    FindEdit, ReplaceEdit, GotoEdit: box_lib.edit_box;
    CS, WH, BKW: box_lib.checkbox;

    new_searchText, searchText, replaceText, gotoText: T.tString;
    cs, whole: BOOLEAN;

    replaced: INTEGER;

    mainTID: INTEGER;

    context, menuFile, menuEdit, menuEncoding, menuView, menuSyntax, menuProgram, menuTools: Menu.tMenu;

    icons: INTEGER;
    grayIcons: INTEGER;

    IPC: ARRAY 64 OF INTEGER;


PROCEDURE WritePos (y: INTEGER);
VAR
    s1, s2: ARRAY 32 OF WCHAR;
    line, col: INTEGER;
BEGIN
    T.getPos(text, col, line);
    U.int2str(line, s1);
    U.int2str(col, s2);
    U.append(s1, ": ");
    U.append(s1, s2);
    K.DrawText(LEFT, y, 0, s1)
END WritePos;


PROCEDURE EditBox_Focus (edit: box_lib.edit_box): BOOLEAN;
    RETURN 1 IN BITS(edit.flags)
END EditBox_Focus;


PROCEDURE EditBox_SetFocus (edit: box_lib.edit_box; value: BOOLEAN);
BEGIN
    IF value THEN
        edit.flags := ORD(BITS(edit.flags) + {1})
    ELSE
        edit.flags := ORD(BITS(edit.flags) - {1})
    END;
(*    IF value THEN
        edit.color := 0FFFFFFH
    ELSE
        edit.color := 0D0D0D0H
    END;*)
    IF search THEN
        box_lib.edit_box_draw(edit)
    END
END EditBox_SetFocus;


PROCEDURE Rect (left, top, right, bottom, color: INTEGER);
BEGIN
    K.DrawLine(left, top, right, top, color);
    K.DrawLine(left, bottom, right, bottom, color);
    K.DrawLine(left, top, left, bottom, color);
    K.DrawLine(right, top, right, bottom, color);
END Rect;


PROCEDURE Message (s: ARRAY OF WCHAR);
CONST
    minWidth = 30;
    height = 40;
    borderColor = 808080H;
VAR
    top, left, right, bottom, x, y, width: INTEGER;
BEGIN
    width := minWidth + LENGTH(s)*fontWidth;
    left := (canvas.width - width) DIV 2 + LEFT;
    top := (canvas.height - height) DIV 2 + TOP;
    bottom := top + height - 1;
    right := left + width - 1;
    x := minWidth DIV 2 + left;
    y := (height - fontHeight) DIV 2 + top;
    K.DrawRect(left, top, width, height, winColor);
    Rect(left, top, right, bottom, borderColor);
    K.DrawText(x, y, 0, s);
END Message;


PROCEDURE NotFound;
BEGIN
    IF notFound THEN
        Message("not found");
        notFound := FALSE;
        EditBox_SetFocus(FindEdit, TRUE);
        EditBox_SetFocus(ReplaceEdit, FALSE);
        EditBox_SetFocus(GotoEdit, FALSE)
    END
END NotFound;


PROCEDURE Replaced;
VAR
    s, s1: ARRAY 32 OF WCHAR;
BEGIN
    IF replaced # 0 THEN
        s := "replaced: ";
        U.int2str(replaced, s1);
        U.append(s, s1);
        Message(s);
        replaced := 0;
        EditBox_SetFocus(FindEdit, TRUE);
        EditBox_SetFocus(ReplaceEdit, FALSE);
        EditBox_SetFocus(GotoEdit, FALSE)
    END
END Replaced;


PROCEDURE icons16 (icons, n, x, y: INTEGER);
VAR
    sizeX, sizeY, data: INTEGER;
BEGIN
    LibImg.GetInf(icons, sizeX, sizeY, data);
    K.DrawImage(data + 16*16*3*n, 16, 16, x, y)
END icons16;


PROCEDURE toolbarIcons;
CONST
    iconPad = (toolBtnSize - 16) DIV 2;
VAR
    x, color: INTEGER;
BEGIN
    x := searchLeft + (toolBtnSize + 5)*2;
    IF text.modified THEN
        icons16(icons, 5, x + iconPad, btnTop + iconPad)
    ELSE
        icons16(grayIcons, 5, x + iconPad, btnTop + iconPad)
    END;

    IF text.edition # NIL THEN
        x := searchLeft + (toolBtnSize + 5)*4 + toolbarDelim*2;
        IF ChangeLog.isFirstGuard(text.edition) THEN
            icons16(grayIcons, 37, x + iconPad, btnTop + iconPad)
        ELSE
            icons16(icons, 37, x + iconPad, btnTop + iconPad)
        END;

        x := searchLeft + (toolBtnSize + 5)*5 + toolbarDelim*2;
        IF ChangeLog.isLastGuard(text.edition) THEN
            icons16(grayIcons, 36, x + iconPad, btnTop + iconPad)
        ELSE
            icons16(icons, 36, x + iconPad, btnTop + iconPad)
        END
(*    ELSE
        x := searchLeft + (toolBtnSize + 5)*4;
        icons16(grayIcons, 37, x + iconPad, btnTop + iconPad);
        x := searchLeft + (toolBtnSize + 5)*5;
        icons16(grayIcons, 36, x + iconPad, btnTop + iconPad)*)
    END;

    IF T.selected(text) THEN
        color := 00000FFH
    ELSE
        color := 0808080H
    END;

    x := searchLeft + (toolBtnSize + 5)*6 + toolbarDelim*3;
    K.DrawRect(x, btnTop, toolBtnSize, toolBtnSize, toolbarColor);
    K.DrawText69(x + (toolBtnSize - 12) DIV 2, btnTop + (toolBtnSize - 9) DIV 2 + 2, color, "AB");
    INC(x, toolBtnSize + 5);
    K.DrawRect(x, btnTop, toolBtnSize, toolBtnSize, toolbarColor);
    K.DrawText69(x + (toolBtnSize - 12) DIV 2, btnTop + (toolBtnSize - 9) DIV 2 + 2, color, "ab");

    x := searchLeft + (toolBtnSize + 5)*8 + toolbarDelim*4;
    IF buildScript # "" THEN
        icons16(icons, 54, x + iconPad, btnTop + iconPad)
    ELSE
        icons16(grayIcons, 54, x + iconPad, btnTop + iconPad)
    END;
    INC(x, toolBtnSize + 5);
    IF runScript # "" THEN
        icons16(icons, 53, x + iconPad, btnTop + iconPad)
    ELSE
        icons16(grayIcons, 53, x + iconPad, btnTop + iconPad)
    END
END toolbarIcons;


PROCEDURE WriteModified (x, y: INTEGER);
BEGIN
    modified := text.modified;
    K.DrawRect(x, TOP + canvas.height + scrollWidth - 1, 9*fontWidth, BOTTOM - scrollWidth + 1, winColor);
    IF modified THEN
        K.DrawText866(x, y, 0, "modified")
    END
END WriteModified;


PROCEDURE repaint;
VAR
    width, height, scrollX, scrollY, y: INTEGER;
BEGIN
    IF text # NIL THEN
        IF confirm THEN
            K.DeleteButton(btnYes);
            K.DeleteButton(btnNo);
            confirm := FALSE
        END;
        T.draw(text);
        K.ClientSize(width, height);
        y := height - (BOTTOM - scrollWidth) + (BOTTOM - scrollWidth - 16) DIV 2;
        K.DrawRect(LEFT, TOP + canvas.height + scrollWidth - 1, 16*fontWidth, BOTTOM - scrollWidth + 1, winColor);
        WritePos(y);

        IF modified # text.modified THEN
            WriteModified(width - 9*fontWidth, y)
        END;

        T.getScroll(text, scrollX, scrollY);
        vScroll.value := scrollY; vScroll.maxVal := text.count - 1;
        hScroll.value := scrollX; hScroll.maxVal := Lines.maxLength;
        Scroll.draw(vScroll, LEFT + canvas.width - 1, TOP + scrollWidth - 1);
        Scroll.draw(hScroll, LEFT + scrollWidth, TOP + canvas.height - 1);

        G.DrawCanvas(canvas, LEFT, TOP);
        NotFound;
        Replaced;
        toolbarIcons
    END
END repaint;


PROCEDURE resize;
VAR
    cliWidth, cliHeight: INTEGER;
BEGIN
    K.WinSize(winWidth, winHeight);
    IF winWidth < minWinWidth THEN
        winWidth := minWinWidth
    END;
    IF winHeight < minWinHeight THEN
        winHeight := minWinHeight
    END;
    K.SetWinSize(winWidth, winHeight);
    K.WinSize(winWidth, winHeight);
    K.ClientSize(cliWidth, cliHeight);
    G.destroy(canvas);
    canvas := G.CreateCanvas(cliWidth - (LEFT + RIGHT + 1), cliHeight - (TOP + BOTTOM));
    G.SetFont(canvas, font);
    T.setCanvas(canvas);
    T.resize(canvas.width, canvas.height);
    Scroll.resize(vScroll, vScroll.xSize, canvas.height - scrollWidth*2 + 1);
    Scroll.resize(hScroll, canvas.width - scrollWidth*2, hScroll.ySize);
END resize;


PROCEDURE SearchPanel (left, top: INTEGER);
VAR
    y, right, bottom, color: INTEGER;
BEGIN
    right := left + EditBox_Width + SEARCH_PADDING*2;
    bottom := top + 395 + btnHeight + SEARCH_PADDING;
    color := T.colors.border;
    Rect(left, top, right, bottom, color);
    K.CreateButton(btnCloseFind, right - 20, top, 20, 20, 0EF999FH, "");
    K.DrawLine(right - 14, top + 5, right - 5, top + 14, 0FFFFFFH);
    K.DrawLine(right - 15, top + 5, right - 5, top + 15, 0FFFFFFH);
    K.DrawLine(right - 15, top + 6, right - 6, top + 15, 0FFFFFFH);
    K.DrawLine(right - 15, top + 14, right - 6, top + 5, 0FFFFFFH);
    K.DrawLine(right - 15, top + 15, right - 5, top + 5, 0FFFFFFH);
    K.DrawLine(right - 14, top + 15, right - 5, top + 6, 0FFFFFFH);

    INC(top, 15);
    INC(left, SEARCH_PADDING);
    K.DrawText866(left, top, 0, "find");
    K.DrawText866(left, top + 55, 0, "replace with");
    K.CreateButton(btnFindEdit + ORD({30}), left, top + 20, EditBox_Width, fontHeight + 5, 0, "");
    K.CreateButton(btnReplaceEdit + ORD({30}), left, top + 75, EditBox_Width, fontHeight + 5, 0, "");
    K.DrawText866(left, top + 330, 0, "go to line");
    K.CreateButton(btnGotoEdit + ORD({30}), left, top + 350, EditBox_Width, fontHeight + 5, 0, "");
    BKW.top_s := BKW.top_s MOD 65536 + (top + 110) * 65536;
    CS.top_s := CS.top_s MOD 65536 + (top + 140) * 65536;
    WH.top_s := WH.top_s MOD 65536 + (top + 170) * 65536;
    BKW.left_s := BKW.left_s MOD 65536 + left * 65536;
    CS.left_s := CS.left_s MOD 65536 + left * 65536;
    WH.left_s := WH.left_s MOD 65536 + left * 65536;
    FindEdit.top := top + 20;
    ReplaceEdit.top := top + 75;
    GotoEdit.top := top + 350;
    FindEdit.left := left;
    ReplaceEdit.left := left;
    GotoEdit.left := left;
    box_lib.edit_box_draw(FindEdit);
    box_lib.edit_box_draw(ReplaceEdit);
    box_lib.edit_box_draw(GotoEdit);
    box_lib.check_box_draw2(BKW); K.DrawText866(left + 20, top + 110, 0, "backward");
    box_lib.check_box_draw2(CS); K.DrawText866(left + 20, top + 140, 0, "match case");
    box_lib.check_box_draw2(WH); K.DrawText866(left + 20, top + 170, 0, "whole word");
    y := top + 200;
    K.CreateButton(btnFindNext, left, y, btnWidth, btnHeight, btnColor, "next"); INC(y, btnHeight + 10);
    K.CreateButton(btnReplace, left, y, btnWidth, btnHeight, btnColor, "replace"); INC(y, btnHeight + 10);
    K.CreateButton(btnReplaceAll, left, y, btnWidth + 5*fontWidth - 2, btnHeight, btnColor, "replace all");
    K.CreateButton(btnGoto, left, top + 380, btnWidth, btnHeight, btnColor, "go");
END SearchPanel;


PROCEDURE gray (icons: INTEGER);
VAR
    sizeX, sizeY, data, x, y: INTEGER;
    b, g, r, gr: BYTE;
BEGIN
    LibImg.GetInf(icons, sizeX, sizeY, data);
    FOR y := 0 TO sizeY - 1 DO
        FOR x := 0 TO sizeX - 1 DO
            SYSTEM.GET8(data, b);
            SYSTEM.GET8(data + 1, g);
            SYSTEM.GET8(data + 2, r);
            gr := (r + g + b) DIV 3;
            SYSTEM.PUT8(data, gr);
            SYSTEM.PUT8(data + 1, gr);
            SYSTEM.PUT8(data + 2, gr);
            INC(data, 3);
        END
    END
END gray;


PROCEDURE iconsBackColor (icons: INTEGER);
VAR
    sizeX, sizeY, data, x, y: INTEGER;
    b, g, r: BYTE;
BEGIN
    LibImg.GetInf(icons, sizeX, sizeY, data);
    FOR y := 0 TO sizeY - 1 DO
        FOR x := 0 TO sizeX - 1 DO
            SYSTEM.GET8(data, b);
            SYSTEM.GET8(data + 1, g);
            SYSTEM.GET8(data + 2, r);
            IF b + g + r = 765 THEN
                b := toolbarColor MOD 256;
                g := toolbarColor DIV 256 MOD 256;
                r := toolbarColor DIV 65536 MOD 256
            END;
            SYSTEM.PUT8(data, b);
            SYSTEM.PUT8(data + 1, g);
            SYSTEM.PUT8(data + 2, r);
            INC(data, 3);
        END
    END
END iconsBackColor;


PROCEDURE draw_window;
CONST
    selMenuColor = 0CCE8FFH;
    iconPad = (toolBtnSize - 16) DIV 2;
VAR
    width, height, x, y: INTEGER;


    PROCEDURE drawToolbarBtn (id, x: INTEGER);
    BEGIN
        K.DrawRect(x, btnTop, toolBtnSize, toolBtnSize, toolbarColor);
        K.DrawLine(x, btnTop + toolBtnSize, x + toolBtnSize, btnTop + toolBtnSize, 0808080H);
        K.DrawLine(x + toolBtnSize, btnTop, x + toolBtnSize, btnTop + toolBtnSize, 0808080H);
        K.CreateButton(id + ORD({30}), x, btnTop, toolBtnSize, toolBtnSize, btnColor, "");
    END drawToolbarBtn;


    PROCEDURE drawMainMenu (menu: Menu.tMenu; x: INTEGER; btn: INTEGER; caption: ARRAY OF WCHAR);
    VAR
        menuColor, n: INTEGER;
    BEGIN
        IF menu.tid # 0 THEN
            menuColor := selMenuColor
        ELSE
            menuColor := winColor
        END;
        n := LENGTH(caption);
        K.DrawRect(x, 0, n*fontWidth + 2, MainMenuHeight, menuColor);
        K.CreateButton(btn + ORD({30}), x, 0, n*fontWidth + 2, MainMenuHeight, btnColor, caption);
    END drawMainMenu;


BEGIN
    K.BeginDraw;
    K.CreateWindow(50 + K.GetTickCount() MOD 128, 50 + K.GetTickCount() MOD 128, winWidth, winHeight, winColor, 73H, 0, 0, header);
    IF (text # NIL) & ~K.RolledUp() THEN
        confirm := FALSE;
        K.ClientSize(width, height);

        K.DrawRect(0, 0, width, TOP, winColor);
        K.DrawRect(0, 0, LEFT, height, winColor);
        K.DrawRect(LEFT + canvas.width - 1, TOP + canvas.height - 1, scrollWidth, scrollWidth, winColor);

        drawMainMenu(menuFile, menuFileX, btnFile, "file");
        drawMainMenu(menuEdit, menuEditX, btnEdit, "edit");
        drawMainMenu(menuEncoding, menuEncodingX, btnEncoding, "encoding");
        drawMainMenu(menuView, menuViewX, btnView, "view");
        drawMainMenu(menuSyntax, menuSyntaxX, btnSyntax, "syntax");
        drawMainMenu(menuProgram, menuProgramX, btnProgram, "program");
        drawMainMenu(menuTools, menuToolsX, btnTools, "tools");

        x := searchLeft;

        drawToolbarBtn(btnNew, x);
        icons16(icons, 2, x + iconPad, btnTop + iconPad);
        INC(x, toolBtnSize + 5);

        drawToolbarBtn(btnOpen, x);
        icons16(icons, 0, x + iconPad, btnTop + iconPad);
        INC(x, toolBtnSize + 5);

        drawToolbarBtn(btnSave, x);
        INC(x, toolBtnSize + 5 + toolbarDelim);

        drawToolbarBtn(btnSearch, x);
        icons16(icons, 49, x + iconPad, btnTop + iconPad);
        INC(x, toolBtnSize + 5 + toolbarDelim);

        drawToolbarBtn(btnUndo, x);
        INC(x, toolBtnSize + 5);

        drawToolbarBtn(btnRedo, x);
        INC(x, toolBtnSize + 5 + toolbarDelim);

        drawToolbarBtn(btnUpper, x);
        K.DrawText69(x + (toolBtnSize - 12) DIV 2, btnTop + (toolBtnSize - 9) DIV 2 + 2, 0, "AB");
        INC(x, toolBtnSize + 5);

        drawToolbarBtn(btnLower, x);
        K.DrawText69(x + (toolBtnSize - 12) DIV 2, btnTop + (toolBtnSize - 9) DIV 2 + 2, 0, "ab");
        INC(x, toolBtnSize + 5 + toolbarDelim);

        drawToolbarBtn(btnBuild, x);
        icons16(icons, 54, x + iconPad, btnTop + iconPad);
        INC(x, toolBtnSize + 5);

        drawToolbarBtn(btnRun, x);
        icons16(icons, 53, x + iconPad, btnTop + iconPad);
        INC(x, toolBtnSize + 5);

        K.CreateButton(btnUp, LEFT + canvas.width - 1, TOP, scrollWidth - 1, scrollWidth, btnColor, 0X);
        K.DrawText69(LEFT + canvas.width - 1 + (scrollWidth - 6) DIV 2, TOP + (scrollWidth - 9) DIV 2, 0, 18X);
        K.CreateButton(btnDown, LEFT + canvas.width - 1, TOP + canvas.height - scrollWidth - 1, scrollWidth - 1, scrollWidth, btnColor, 0X);
        K.DrawText69(LEFT + canvas.width - 1 + (scrollWidth - 6) DIV 2, TOP + canvas.height - scrollWidth + (scrollWidth - 9) DIV 2, 0, 19X);

        K.CreateButton(btnLeft, LEFT, TOP + canvas.height - 1, scrollWidth, scrollWidth - 1, btnColor, 0X);
        K.DrawText69(LEFT + (scrollWidth - 6) DIV 2, TOP + canvas.height - 1 + (scrollWidth - 9) DIV 2 + 1, 0, 1BX);
        K.CreateButton(btnRight, LEFT + canvas.width - scrollWidth - 1, TOP + canvas.height - 1, scrollWidth, scrollWidth - 1, btnColor, 0X);
        K.DrawText69(LEFT + canvas.width - scrollWidth - 1 + (scrollWidth - 6) DIV 2, TOP + canvas.height - 1 + (scrollWidth - 9) DIV 2 + 1, 0, 1AX);

        y := (btnHeight - fontHeight) DIV 2 + btnTop;
        CASE text.enc OF
        |E.UTF8:    K.DrawText866(width -  6*fontWidth, y, 0, "UTF-8")
        |E.UTF8BOM: K.DrawText866(width - 10*fontWidth, y, 0, "UTF-8-BOM")
        |E.CP866:   K.DrawText866(width -  6*fontWidth, y, 0, "CP866")
        |E.W1251:   K.DrawText866(width - 13*fontWidth, y, 0, "Windows-1251")
        END;
        IF search THEN
            SearchPanel(searchLeft, TOP)
        END;

        y := height - (BOTTOM - scrollWidth) + (BOTTOM - scrollWidth - 16) DIV 2;
        K.DrawRect(LEFT + 16*fontWidth, TOP + canvas.height + scrollWidth - 1, width - LEFT - 25*fontWidth, BOTTOM - scrollWidth + 1, winColor);
        K.DrawText866(LEFT + 16*fontWidth, y, 0, text.fileName);
        WriteModified(width - 9*fontWidth, y);
        repaint
    END;
    K.EndDraw
END draw_window;


PROCEDURE mouse (VAR x, y: INTEGER);
VAR
    mouseX, mouseY,
    cliX, cliY,
    winX, winY: INTEGER;
BEGIN
    K.MousePos(mouseX, mouseY);
    K.WinPos(winX, winY);
    K.ClientPos(cliX, cliY);
    x := mouseX - winX - cliX - LEFT;
    y := mouseY - winY - cliY - TOP;
END mouse;


PROCEDURE getKBState;
VAR
    kbState: SET;
BEGIN
    kbState := K.GetControlKeys();
    IF {0, 1} * kbState # {} THEN
        INCL(shift, T.SHIFT)
    ELSE
        EXCL(shift, T.SHIFT)
    END;

    IF {2, 3} * kbState # {} THEN
        INCL(shift, T.CTRL)
    ELSE
        EXCL(shift, T.CTRL)
    END
END getKBState;


PROCEDURE OpenFile (VAR FileName: RW.tFileName; filter: ARRAY OF CHAR);
BEGIN
    OpenDlg.SetFilter(OD, filter);
    OpenDlg.Show(OD, 500, 400);
    WHILE OD.status = 2 DO
        K.Pause(30)
    END;
    IF OD.status = 1 THEN
        COPY(OD.FilePath, FileName)
    ELSE
        FileName := ""
    END
END OpenFile;


PROCEDURE error (s: RW.tFileName);
BEGIN
    K.Run("/rd/1/@notify", s)
END error;


PROCEDURE saveAs;
VAR
    fileName: RW.tFileName;
    ext: ARRAY 8 OF CHAR;
BEGIN
    OD._type := OpenDlg.tsave;
    U.getFileName(text.fileName, OD.FileName, U.SLASH);
    IF OD.FileName = "" THEN
        OD.FileName := "NewFile.";
        CASE text.lang OF
        |Languages.langNone:   ext := "txt"
        |Languages.langC:      ext := "c"
        |Languages.langFasm:   ext := "asm"
        |Languages.langIni:    ext := "ini"
        |Languages.langLua:    ext := "lua"
        |Languages.langOberon: ext := "ob07"
        |Languages.langPascal: ext := "pas"
        END;
        U.append8(OD.FileName, ext)
    END;
    OpenFile(fileName, EditFilter);
    IF fileName # "" THEN
        IF T.save(text, fileName, text.enc, RW.EOL_CRLF) THEN
            T.setName(text, fileName)
        ELSE
            error("'cedit: error saving file' -E")
        END
    END
END saveAs;


PROCEDURE save;
BEGIN
    IF text.modified THEN
        IF text.fileName # "" THEN
            IF ~T.save(text, text.fileName, text.enc, RW.EOL_CRLF) THEN
                error("'cedit: error saving file' -E")
            END
        ELSE
            saveAs
        END
    END
END save;


PROCEDURE SelfRun (file: ARRAY OF CHAR);
BEGIN
    K.Run(AppPath, file)
END SelfRun;


PROCEDURE open;
VAR
    fileName: RW.tFileName;
BEGIN
    OD._type := OpenDlg.topen;
    OpenFile(fileName, EditFilter);
    IF fileName # "" THEN
        SelfRun(fileName)
    END
END open;


PROCEDURE Confirm;
CONST
    width  = btnWidth*2 + 30;
    height = btnHeight*2 + 20;
    lineColor = 808080H;
VAR
    left, top, right, bottom: INTEGER;
BEGIN
    draw_window;
    confirm := TRUE;
    left := (canvas.width - width) DIV 2 + LEFT;
    top := (canvas.height - height) DIV 2 + TOP;
    right := left + width - 1;
    bottom := top + height - 1;
    K.DrawRect(left, top, width, height, winColor);
    Rect(left, top, right, bottom, lineColor);
    K.DrawText866(left + (width - 10*fontWidth) DIV 2, top + 10, 0, "save file?");
    K.CreateButton(btnYes, left + 10, top + 35, btnWidth, btnHeight, btnColor, "yes");
    K.CreateButton(btnNo, left + 20 + btnWidth, top + 35, btnWidth, btnHeight, btnColor, "no");
END Confirm;


PROCEDURE createEdit (left, top: INTEGER): box_lib.edit_box;
VAR
    edit, EditBox0: box_lib.edit_box;
BEGIN
    NEW(EditBox0);
    EditBox0.text := K.malloc(EDITBOX_MAXCHARS + 2);
    ASSERT(EditBox0.text # 0);
    edit := box_lib.kolibri_new_edit_box(left, top, EditBox_Width, EDITBOX_MAXCHARS, EditBox0);
    edit.flags := 4002H;
    edit.text_color := 30000000H;
    EditBox_SetFocus(edit, FALSE)
    RETURN edit
END createEdit;


PROCEDURE createSearchForm;
BEGIN
    FindEdit := createEdit(searchLeft, TOP + 20);
    ReplaceEdit := createEdit(searchLeft, TOP + 20 + 55);
    GotoEdit := createEdit(searchLeft, TOP + 20 + 330);
    GotoEdit.flags := ORD(BITS(GotoEdit.flags) + BITS(8000H));
    BKW := box_lib.kolibri_new_check_box(searchLeft, TOP + 90 + 20, 16, 16, "", 8*fontWidth + 4);
    CS := box_lib.kolibri_new_check_box(searchLeft, TOP + 120 + 20, 16, 16, "", 10*fontWidth + 4);
    WH := box_lib.kolibri_new_check_box(searchLeft, TOP + 150 + 20, 16, 16, "", 10*fontWidth + 4);
END createSearchForm;


PROCEDURE EditBox_GetValue (edit: box_lib.edit_box; VAR s: ARRAY OF WCHAR);
VAR
    str: ARRAY EDITBOX_MAXCHARS + 1 OF CHAR;
    i: INTEGER;
BEGIN
    box_lib.edit_box_get_value(edit, str);
    i := 0;
    WHILE str[i] # 0X DO
        s[i] := WCHR(E.cp866[ORD(str[i])]);
        INC(i)
    END;
    s[i] := 0X
END EditBox_GetValue;


PROCEDURE Search;
BEGIN
    search := ~search;
    IF search THEN
        LEFT := searchLeft + EditBox_Width + SEARCH_PADDING*3;
        IF T.search(text, searchText, cs, whole) THEN END
    ELSE
        LEFT := searchLeft;
        IF T.search(text, "", FALSE, FALSE) THEN END
    END;
    EditBox_SetFocus(FindEdit, search);
    EditBox_SetFocus(ReplaceEdit, FALSE);
    EditBox_SetFocus(GotoEdit, FALSE);
    resize;
    draw_window
END Search;


PROCEDURE click (x, y: INTEGER): INTEGER;
VAR
    scrollX, scrollY: INTEGER;
BEGIN
    IF (0 <= x) & (x < canvas.width) & (0 <= y) & (y < canvas.height) THEN
        leftButton := TRUE;
        EditBox_SetFocus(FindEdit, FALSE);
        EditBox_SetFocus(ReplaceEdit, FALSE);
        EditBox_SetFocus(GotoEdit, FALSE);
        IF ~(T.SHIFT IN shift) THEN
            T.resetSelect(text)
        END;
        T.mouse(text, x, y);
        repaint
    ELSIF (canvas.width < x) & (x < canvas.width + scrollWidth) & (scrollWidth < y) & (y < canvas.height - scrollWidth) THEN
        VScroll := TRUE;
        DEC(x, canvas.width);
        DEC(y, scrollWidth);
        Scroll.mouse(vScroll, x, y);
        T.getScroll(text, scrollX, scrollY);
        T.scroll(text, 0, vScroll.value - scrollY);
        repaint
    ELSIF (scrollWidth < x) & (x < canvas.width - scrollWidth) & (canvas.height < y) & (y < canvas.height + scrollWidth) THEN
        HScroll := TRUE;
        DEC(x, scrollWidth);
        DEC(y, canvas.height);
        Scroll.mouse(hScroll, x, y);
        T.getScroll(text, scrollX, scrollY);
        T.scroll(text, hScroll.value - scrollX, 0);
        repaint
    END
    RETURN K.GetTickCount()
END click;


PROCEDURE LeftButtonUp;
BEGIN
    leftButton := FALSE;
    VScroll := FALSE;
    HScroll := FALSE;
    Scroll.MouseUp(vScroll);
    Scroll.MouseUp(hScroll);
END LeftButtonUp;


PROCEDURE close;
BEGIN
    IF text.modified THEN
        Confirm
    ELSE
        K.Exit
    END
END close;


PROCEDURE MenuItemClick (menu: Menu.tMenu; id: INTEGER);
BEGIN
    K.SendIPC(mainTID, id)
END MenuItemClick;


PROCEDURE goto;
VAR
    gotoVal: INTEGER;
BEGIN
    EditBox_GetValue(GotoEdit, gotoText);
    IF U.str2int(gotoText, gotoVal) & T.goto(text, gotoVal) THEN END
END goto;


PROCEDURE Script (script: ARRAY OF CHAR);
BEGIN
    IF script # "" THEN
        K.Run("/rd/1/@open", script)
    END
END Script;


PROCEDURE receiveIPC;
BEGIN
    IF IPC[0] # Menu.lastTID THEN
        IPC[2] := 0
    END;
    CASE IPC[2] OF
    |0:
    |menuCut:       T.key(text, ORD("X"), {T.CTRL})
    |menuCopy:      T.key(text, ORD("C"), {T.CTRL})
    |menuPaste:     T.key(text, ORD("V"), {T.CTRL})
    |menuDelete:    T.key(text, 46, {})
    |menuSelectAll: T.key(text, ORD("A"), {T.CTRL})

    |menuNew:
        SelfRun("")
    |menuOpen:
        open
    |menuSave:
        save;
        repaint
    |menuSaveAs:
        saveAs;
        repaint
    |menuFolder:
        K.Run("/rd/1/File Managers/Eolite", text.fileName)
    |menuExit:
        close
    |menuUndo:
        T.undo(text);
        repaint
    |menuRedo:
        T.redo(text);
        repaint
    |menuSearch:
        IF ~search THEN
            Search
        END;
        EditBox_SetFocus(FindEdit, TRUE);
        EditBox_SetFocus(ReplaceEdit, FALSE);
        EditBox_SetFocus(GotoEdit, FALSE)
    |menuGoto:
        IF ~search THEN
            Search
        END;
        EditBox_SetFocus(GotoEdit, TRUE);
        EditBox_SetFocus(FindEdit, FALSE);
        EditBox_SetFocus(ReplaceEdit, FALSE)
    |menuNumbers:
        T.toggleNumbers(text)
    |menuNone:
        T.setLang(text, Languages.langNone)
    |menuC:
        T.setLang(text, Languages.langC)
    |menuFasm:
        T.setLang(text, Languages.langFasm)
    |menuIni:
        T.setLang(text, Languages.langIni)
    |menuLua:
        T.setLang(text, Languages.langLua)
    |menuOberon:
        T.setLang(text, Languages.langOberon)
    |menuPascal:
        T.setLang(text, Languages.langPascal)
    |menuBuild:
        Script(buildScript)
    |menuBuildScript:
        OpenFile(buildScript, ShellFilter)
    |menuRun:
        Script(runScript)
    |menuRunScript:
        OpenFile(runScript, ShellFilter)
    |menuDebug:
        Script(debugScript)
    |menuDebugScript:
        OpenFile(debugScript, ShellFilter)
    |menuUTF8BOM:
        text.enc := E.UTF8BOM
    |menuUTF8:
        text.enc := E.UTF8
    |menuCP866:
        text.enc := E.CP866
    |menuWin1251:
        text.enc := E.W1251
    |menuPipet:
        K.Run("/rd/1/develop/pipet", "")
    |menuSysFunc:
        K.Run("/rd/1/docpack", "f")
    |menuColors..menuMaxColors:
        Ini.selectSection(IPC[2] - menuColors)
    END;
    IPC[0] := 0;
    IPC[1] := 0
END receiveIPC;


PROCEDURE MenuKeyDown (menu: Menu.tMenu; key: INTEGER): BOOLEAN;
VAR
    menuItem: INTEGER;
BEGIN
    menuItem := -1;
    getKBState;
    IF (T.CTRL IN shift) THEN
        CASE key DIV 65536 OF
        |21: menuItem := menuRedo
        |30: menuItem := menuSelectAll
        |33: menuItem := menuSearch
        |34: menuItem := menuGoto
        |44: menuItem := menuUndo
        |45: menuItem := menuCut
        |46: menuItem := menuCopy
        |47: menuItem := menuPaste
        |24: menuItem := menuOpen
        |31: menuItem := menuSave
        |49: menuItem := menuNew
        |67: menuItem := menuBuild
        ELSE
        END
    ELSE
        IF key DIV 65536 = 83 THEN
            menuItem := menuDelete
        ELSIF key DIV 65536 = 67 THEN
            menuItem := menuRun
        END
    END;
    IF menuItem # -1 THEN
        IF Menu.isEnabled(menu, menuItem) THEN
            MenuItemClick(menu, menuItem)
        ELSE
            menuItem := -1
        END
    END
    RETURN menuItem # -1
END MenuKeyDown;


PROCEDURE CreateContextMenu (): Menu.tMenu;
VAR
    menu: List.tList;
BEGIN
    menu := List.create(NIL);
    Menu.AddMenuItem(menu, menuUndo,      "undo         ctrl-Z");
    Menu.AddMenuItem(menu, menuRedo,      "redo         ctrl-Y");
    Menu.delimiter(menu);
    Menu.AddMenuItem(menu, menuCut,       "cut          ctrl-X");
    Menu.AddMenuItem(menu, menuCopy,      "copy         ctrl-C");
    Menu.AddMenuItem(menu, menuPaste,     "paste        ctrl-V");
    Menu.AddMenuItem(menu, menuDelete,    "delete");
    Menu.delimiter(menu);
    Menu.AddMenuItem(menu, menuSelectAll, "select all   ctrl-A");
    RETURN Menu.create(menu, MenuItemClick, MenuKeyDown)
END CreateContextMenu;


PROCEDURE CreateMenuFile (): Menu.tMenu;
VAR
    menu: List.tList;
BEGIN
    menu := List.create(NIL);
    Menu.AddMenuItem(menu, menuNew,    "new       ctrl-N");
    Menu.AddMenuItem(menu, menuOpen,   "open      ctrl-O");
    Menu.AddMenuItem(menu, menuSave,   "save      ctrl-S");
    Menu.AddMenuItem(menu, menuSaveAs, "save as");
    Menu.AddMenuItem(menu, menuFolder, "folder");
    Menu.delimiter(menu);
    Menu.AddMenuItem(menu, menuExit,   "exit");
    RETURN Menu.create(menu, MenuItemClick, MenuKeyDown)
END CreateMenuFile;


PROCEDURE CreateMenuEdit (): Menu.tMenu;
VAR
    menu: List.tList;
BEGIN
    menu := List.create(NIL);
    Menu.AddMenuItem(menu, menuUndo,      "undo          ctrl-Z");
    Menu.AddMenuItem(menu, menuRedo,      "redo          ctrl-Y");
    Menu.delimiter(menu);
    Menu.AddMenuItem(menu, menuSearch,    "search        ctrl-F");
    Menu.AddMenuItem(menu, menuGoto,      "go to line    ctrl-G");
    Menu.delimiter(menu);
    Menu.AddMenuItem(menu, menuCut,       "cut           ctrl-X");
    Menu.AddMenuItem(menu, menuCopy,      "copy          ctrl-C");
    Menu.AddMenuItem(menu, menuPaste,     "paste         ctrl-V");
    Menu.AddMenuItem(menu, menuDelete,    "delete");
    Menu.delimiter(menu);
    Menu.AddMenuItem(menu, menuSelectAll, "select all    ctrl-A");
    RETURN Menu.create(menu, MenuItemClick, MenuKeyDown)
END CreateMenuEdit;


PROCEDURE CreateMenuEncoding (): Menu.tMenu;
VAR
    menu: List.tList;
BEGIN
    menu := List.create(NIL);
    Menu.AddMenuItem(menu, menuUTF8BOM, "UTF-8-BOM");
    Menu.AddMenuItem(menu, menuUTF8,    "UTF-8");
    Menu.AddMenuItem(menu, menuCP866,   "CP866");
    Menu.AddMenuItem(menu, menuWin1251, "Windows-1251");
    RETURN Menu.create(menu, MenuItemClick, MenuKeyDown)
END CreateMenuEncoding;


PROCEDURE CreateMenuView (): Menu.tMenu;
VAR
    menu: List.tList;
    colors: Ini.tSection;
    idx: INTEGER;
BEGIN
    menu := List.create(NIL);
    Menu.AddMenuItem(menu, menuNumbers,  "line numbers");
    Menu.delimiter(menu);
    (*Menu.AddMenuItem(menu, menuSettings, "settings");*)

    colors := Ini.sections.first(Ini.tSection);
    idx := menuColors;
    WHILE colors # NIL DO
        Menu.AddMenuItem(menu, idx, colors.name);
        INC(idx);
        colors := colors.next(Ini.tSection)
    END;

    RETURN Menu.create(menu, MenuItemClick, MenuKeyDown)
END CreateMenuView;


PROCEDURE CreateMenuSyntax (): Menu.tMenu;
VAR
    menu: List.tList;
BEGIN
    menu := List.create(NIL);
    Menu.AddMenuItem(menu, menuC,      "C");
    Menu.AddMenuItem(menu, menuFasm,   "Fasm");
    Menu.AddMenuItem(menu, menuIni,    "Ini");
    Menu.AddMenuItem(menu, menuLua,    "Lua");
    Menu.AddMenuItem(menu, menuOberon, "Oberon");
    Menu.AddMenuItem(menu, menuPascal, "Pascal");
    Menu.delimiter(menu);
    Menu.AddMenuItem(menu, menuNone,   "none");
    RETURN Menu.create(menu, MenuItemClick, MenuKeyDown)
END CreateMenuSyntax;


PROCEDURE CreateMenuProgram (): Menu.tMenu;
VAR
    menu: List.tList;
BEGIN
    menu := List.create(NIL);
    Menu.AddMenuItem(menu, menuBuild,       "build    ctrl+F9");
    Menu.AddMenuItem(menu, menuBuildScript, "script");
    Menu.delimiter(menu);
    Menu.AddMenuItem(menu, menuRun,         "run           F9");
    Menu.AddMenuItem(menu, menuRunScript,   "script");
    Menu.delimiter(menu);
    Menu.AddMenuItem(menu, menuDebug,       "debug");
    Menu.AddMenuItem(menu, menuDebugScript, "script");
    RETURN Menu.create(menu, MenuItemClick, MenuKeyDown)
END CreateMenuProgram;


PROCEDURE CreateMenuTools (): Menu.tMenu;
VAR
    menu: List.tList;
BEGIN
    menu := List.create(NIL);
    Menu.AddMenuItem(menu, menuPipet,   "pipet");
    Menu.AddMenuItem(menu, menuSysFunc, "system functions");
    RETURN Menu.create(menu, MenuItemClick, MenuKeyDown)
END CreateMenuTools;


PROCEDURE CanvasToScreen (VAR x, y: INTEGER);
VAR
    cliX, cliY,
    winX, winY: INTEGER;
BEGIN
    K.WinPos(winX, winY);
    K.ClientPos(cliX, cliY);
    x := x + winX + cliX + LEFT;
    y := y + winY + cliY + TOP;
END CanvasToScreen;


PROCEDURE ShowMenu (menu: Menu.tMenu);
VAR
    winX, winY, cliX, cliY, x, y, i: INTEGER;
    selected: BOOLEAN;
BEGIN
    IF menu # context THEN
        K.WinPos(winX, winY);
        K.ClientPos(cliX, cliY);
        x := winX + cliX;
        y := MainMenuHeight + winY + cliY
    ELSE
        mouse(x, y);
        IF ~((0 <= x) & (x < canvas.width) & (0 <= y) & (y < canvas.height)) THEN
            menu := NIL
        END
    END;

    IF menu = menuFile THEN
        Menu.setEnabled(menu, menuSave, text.modified);
        Menu.setEnabled(menu, menuFolder, text.fileName # "");
        INC(x, menuFileX)
    ELSIF (menu = menuEdit) OR (menu = context) THEN
        Menu.setEnabled(menu, menuUndo, ~ChangeLog.isFirstGuard(text.edition));
        Menu.setEnabled(menu, menuRedo, ~ChangeLog.isLastGuard(text.edition));
        selected := T.selected(text);
        Menu.setEnabled(menu, menuCut, selected);
        Menu.setEnabled(menu, menuCopy, selected);
        Menu.setEnabled(menu, menuDelete, selected);
        Menu.setEnabled(menu, menuPaste, CB.available());
        IF menu = menuEdit THEN
            INC(x, menuEditX)
        ELSE
            IF y + menu.height >= canvas.height THEN
                DEC(y, menu.height)
            END;
            IF x + menu.width >= canvas.width THEN
                DEC(x, menu.width)
            END;
            CanvasToScreen(x, y)
        END
    ELSIF menu = menuEncoding THEN
        Menu.setCheck(menu, menuUTF8BOM, ORD(text.enc = E.UTF8BOM)*2);
        Menu.setCheck(menu, menuUTF8,    ORD(text.enc = E.UTF8)*2);
        Menu.setCheck(menu, menuCP866,   ORD(text.enc = E.CP866)*2);
        Menu.setCheck(menu, menuWin1251, ORD(text.enc = E.W1251)*2);
        INC(x, menuEncodingX)
    ELSIF menu = menuView THEN
        (*Menu.setEnabled(menu, menuSettings, FALSE);*)
        Menu.setCheck(menu, menuNumbers, ORD(text.numbers));
        FOR i := 0 TO Ini.sections.count - 1 DO
            Menu.setCheck(menu, menuColors + i, ORD(Ini.curSectionNum = i)*2)
        END;
        INC(x, menuViewX)
    ELSIF menu = menuSyntax THEN
        Menu.setCheck(menu, menuNone,   ORD(text.lang = Languages.langNone)*2);
        Menu.setCheck(menu, menuC,      ORD(text.lang = Languages.langC)*2);
        Menu.setCheck(menu, menuFasm,   ORD(text.lang = Languages.langFasm)*2);
        Menu.setCheck(menu, menuIni,    ORD(text.lang = Languages.langIni)*2);
        Menu.setCheck(menu, menuLua,    ORD(text.lang = Languages.langLua)*2);
        Menu.setCheck(menu, menuOberon, ORD(text.lang = Languages.langOberon)*2);
        Menu.setCheck(menu, menuPascal, ORD(text.lang = Languages.langPascal)*2);
        INC(x, menuSyntaxX)
    ELSIF menu = menuProgram THEN
        Menu.setEnabled(menu, menuBuild, buildScript # "");
        Menu.setEnabled(menu, menuDebug, debugScript # "");
        Menu.setEnabled(menu, menuRun, runScript # "");
        INC(x, menuProgramX)
    ELSIF menu = menuTools THEN
        INC(x, menuToolsX)
    END;

    IF menu # NIL THEN
        IF Menu.opened(menu) THEN
            Menu.close(menu)
        END;
        Menu.open(menu, x, y)
    END
END ShowMenu;


PROCEDURE main;
VAR
    width, height, x, y, scrollX, scrollY: INTEGER;
    key: INTEGER;
    msState: SET;
    scroll: INTEGER;
    err: INTEGER;
    fileName, filePath: RW.tFileName;
    resized: BOOLEAN;
    firstClickX, firstClickY, time: INTEGER;
BEGIN
    modified := FALSE;
    mainTID := K.ThreadID();
    K.SetIPC(IPC);
    U.ptr2str(K.GetName(), AppPath);
    U.getPath(AppPath, fileName);
    U.append8(fileName, "/Icons16.png");
    icons := LibImg.LoadFromFile(fileName, 16, y);
    grayIcons := LibImg.LoadFromFile(fileName, 16, y);
    gray(grayIcons);
    iconsBackColor(icons);
    iconsBackColor(grayIcons);
    Ini.load(AppPath);
    K.SetEventsMask({0, 1, 2, 5, 6, 31});
    LeftButtonUp;
    resized := FALSE;
    shift := {};
    winWidth := minWinWidth;
    winHeight := minWinHeight;
    LEFT := 10;
    canvas := G.CreateCanvas(winWidth - (LEFT + RIGHT + 10), winHeight - (TOP + BOTTOM + 4) - K.SkinHeight());
    font := G.CreateFont(1, "", {});
    G.SetFont(canvas, font);
    T.init(NIL);
    T.setCanvas(canvas);
    U.ptr2str(K.GetCommandLine(), fileName);
    context := CreateContextMenu();
    menuFile := CreateMenuFile();
    menuEdit := CreateMenuEdit();
    menuEncoding := CreateMenuEncoding();
    menuView := CreateMenuView();
    menuSyntax := CreateMenuSyntax();
    menuProgram := CreateMenuProgram();
    menuTools := CreateMenuTools();
    IF fileName = "" THEN
        text := T.New();
        filePath := "/rd/1"
    ELSE
        text := T.open(fileName, err);
        IF text = NIL THEN
            error("'cedit: error opening file' -E");
            K.Exit
        ELSE
            U.getPath(fileName, filePath)
        END
    END;
    OD := OpenDlg.Create(draw_window, OpenDlg.topen, filePath, "");

    vScroll := Scroll.create(scrollWidth, canvas.height - scrollWidth*2 + 1, 0A0A0A0H, winColor);
    hScroll := Scroll.create(canvas.width - scrollWidth*2, scrollWidth, 0A0A0A0H, winColor);
    T.resize(canvas.width, canvas.height);
    T.SetPos(text, 0, 0);
    confirm := FALSE;
    notFound := FALSE;
    search := FALSE;
    createSearchForm;
    new_searchText := "";
    searchText := "";
    cs := FALSE;
    whole := FALSE;
    replaced := 0;
    draw_window;
    repaint;
    buildScript := "";
    runScript := "";
    debugScript := "";
    WHILE TRUE DO
        CASE K.WaitForEvent() OF
        |1:
            IF ~K.RolledUp() THEN
                K.WinSize(width, height);
                IF (width # winWidth) OR (height # winHeight) THEN
                    resize;
                    resized := TRUE
                END;
                K.SetEventsMask({0, 1, 2, 5, 6, 31})
            ELSE
                K.SetEventsMask({0, 30, 31})
            END;
            draw_window
        |2:
            key := K.GetKey();
            getKBState;
            IF key DIV 65536 = 61 THEN (* F3 *)
                key := -1;
                IF search & (searchText # "") THEN
                    notFound := ~T.findNext(text, box_lib.check_box_get_value(BKW))
                END
            ELSIF key DIV 65536 = 67 THEN (* F9 *)
                key := -1;
                IF T.CTRL IN shift THEN
                    Script(buildScript)
                ELSE
                    Script(runScript)
                END
            ELSIF (key DIV 65536 = 55) & (key DIV 256 MOD 256 = 52) THEN
                key := -1 (* PrtScn *)
            ELSIF (T.CTRL IN shift) & (key DIV 65536 = 33) THEN
                key := -1;
                IF ~search THEN
                    Search
                END;
                EditBox_SetFocus(FindEdit, TRUE);
                EditBox_SetFocus(ReplaceEdit, FALSE);
                EditBox_SetFocus(GotoEdit, FALSE);
            ELSIF (T.CTRL IN shift) & (key DIV 65536 = 34) THEN
                key := -1;
                IF ~search THEN
                    Search
                END;
                EditBox_SetFocus(GotoEdit, TRUE);
                EditBox_SetFocus(FindEdit, FALSE);
                EditBox_SetFocus(ReplaceEdit, FALSE)
            END;
            IF (key # -1) & EditBox_Focus(FindEdit) THEN
                box_lib.edit_box_key(FindEdit, key);
                EditBox_GetValue(FindEdit, new_searchText);
                IF new_searchText # searchText THEN
                    searchText := new_searchText;
                    notFound := ~T.search(text, searchText, cs, whole)
                END
            ELSIF (key # -1) & EditBox_Focus(ReplaceEdit) THEN
                box_lib.edit_box_key(ReplaceEdit, key);
                EditBox_GetValue(ReplaceEdit, replaceText)
            ELSIF (key # -1) & EditBox_Focus(GotoEdit) THEN
                IF (key DIV 256) MOD 256 = 13 THEN
                    goto
                ELSE
                    box_lib.edit_box_key(GotoEdit, key)
                END
            ELSIF key # -1 THEN
                CASE key DIV 65536 OF
                |73: key := 33
                |81: key := 34
                |71: key := 36
                |79: key := 35
                |72: key := 38
                |80: key := 40
                |75: key := 37
                |77: key := 39
                |82: key := -1 (* insert *)
                |83: key := 46
                |59, 60, 62..66, 68, 87, 88: key := -1 (* F1, F2, F4..F8, F10, F11, F12 *)
                ELSE
                    IF (T.CTRL IN shift) THEN
                        CASE key DIV 65536 OF
                        |21: T.redo(text);
                             key := -1
                        |22: key := ORD("U")
                        |24: key := -1;
                             open
                        |30: key := ORD("A")
                        |31: key := -1;
                             save
                        |38: key := ORD("L")
                        |44: T.undo(text);
                             key := -1
                        |45: key := ORD("X")
                        |46: key := ORD("C")
                        |47: key := ORD("V")
                        |49: key := -1;
                             SelfRun("")
                        ELSE
                            key := -1
                        END
                    ELSE
                        T.input(text, E.cp866[key DIV 256 MOD 256]);
                        key := -1
                    END
                END;
                IF key # -1 THEN
                    T.key(text, key, shift)
                END
            END;
            repaint
        |3:
            CASE K.ButtonCode() OF
            |0:

            |btnFile:
                ShowMenu(menuFile)
            |btnEdit:
                ShowMenu(menuEdit)
            |btnEncoding:
                ShowMenu(menuEncoding)
            |btnView:
                ShowMenu(menuView)
            |btnSyntax:
                ShowMenu(menuSyntax)
            |btnProgram:
                ShowMenu(menuProgram)
            |btnTools:
                ShowMenu(menuTools)
            |btnNo:
                K.Exit
            |btnYes:
                save;
                IF ~text.modified THEN
                    K.Exit
                END;
                repaint
            |btnClose:
                close
            |btnNew:
                SelfRun("")
            |btnOpen:
                open
            |btnSave:
                save;
                repaint
            |btnSearch:
                IF ~search THEN
                    Search
                END
            |btnCloseFind:
                Search
            |btnUndo:
                T.undo(text);
                repaint
            |btnRedo:
                T.redo(text);
                repaint
            |btnUpper:
                T.chCase(text, TRUE);
                repaint
            |btnLower:
                T.chCase(text, FALSE);
                repaint
            |btnBuild:
                Script(buildScript)
            |btnRun:
                Script(runScript)
            |btnUp:
                T.scroll(text, 0, -1);
                repaint
            |btnDown:
                T.scroll(text, 0, 1);
                repaint
            |btnLeft:
                T.scroll(text, -1, 0);
                repaint
            |btnRight:
                T.scroll(text, 1, 0);
                repaint
            |btnFindEdit:
                EditBox_SetFocus(FindEdit, TRUE);
                EditBox_SetFocus(ReplaceEdit, FALSE);
                EditBox_SetFocus(GotoEdit, FALSE)
            |btnReplaceEdit:
                EditBox_SetFocus(ReplaceEdit, TRUE);
                EditBox_SetFocus(FindEdit, FALSE);
                EditBox_SetFocus(GotoEdit, FALSE)
            |btnGotoEdit:
                EditBox_SetFocus(GotoEdit, TRUE);
                EditBox_SetFocus(FindEdit, FALSE);
                EditBox_SetFocus(ReplaceEdit, FALSE)
            |btnFindNext:
                IF searchText # "" THEN
                    notFound := ~T.findNext(text, box_lib.check_box_get_value(BKW));
                    repaint
                END
            |btnReplace:
                T.replace(text, replaceText, LENGTH(searchText));
                repaint
            |btnReplaceAll:
                notFound := ~T.search(text, searchText, cs, whole);
                IF ~notFound THEN
                    replaced := T.replaceAll(text, replaceText, LENGTH(searchText));
                END;
                repaint
            |btnGoto:
                goto;
                repaint
            END
        |6:
            Menu.close(menuFile);
            Menu.close(menuEdit);
            Menu.close(menuEncoding);
            Menu.close(menuView);
            Menu.close(menuSyntax);
            Menu.close(menuProgram);
            Menu.close(menuTools);
            Menu.close(context);
            IF ~resized THEN
                getKBState;
                msState := K.MouseState();
                IF ~(0 IN msState) OR (16 IN msState) THEN
                    LeftButtonUp
                END;
                scroll := K.Scroll();
                IF scroll # 0 THEN
                    T.scroll(text, 0, scroll*3);
                    repaint
                END;
                IF leftButton THEN
                    IF K.GetTickCount() - time > 9 THEN
                        mouse(x, y);
                        T.mouse(text, x, y);
                        repaint
                    END
                END;
                IF VScroll THEN
                    mouse(x, y);
                    Scroll.mouse(vScroll, x, y - scrollWidth);
                    T.getScroll(text, scrollX, scrollY);
                    T.scroll(text, 0, vScroll.value - scrollY);
                    repaint
                END;
                IF HScroll THEN
                    mouse(x, y);
                    Scroll.mouse(hScroll, x - scrollWidth, y);
                    T.getScroll(text, scrollX, scrollY);
                    T.scroll(text, hScroll.value - scrollX, 0);
                    repaint
                END;
                IF (8 IN msState) & ~(24 IN msState) THEN
                    mouse(firstClickX, firstClickY);
                    time := click(firstClickX, firstClickY)
                END;
                IF 9 IN msState THEN
                    ShowMenu(context)
                END;
                IF 24 IN msState THEN
                    mouse(x, y);
                    IF (ABS(x - firstClickX) < 5) & (ABS(y - firstClickY) < 5) THEN
                        VScroll := FALSE;
                        HScroll := FALSE;
                        IF (0 <= x) & (x < canvas.width) & (0 <= y) & (y < canvas.height) THEN
                            leftButton := FALSE;
                            T.selectWord(text);
                            repaint
                        END
                    ELSE
                        firstClickX := x;
                        firstClickY := y;
                        time := click(firstClickX, firstClickY)
                    END
                END
            END;
            IF search THEN
                IF EditBox_Focus(FindEdit) THEN
                    box_lib.edit_box_mouse(FindEdit)
                END;
                IF EditBox_Focus(ReplaceEdit) THEN
                    box_lib.edit_box_mouse(ReplaceEdit)
                END;
                IF EditBox_Focus(GotoEdit) THEN
                    box_lib.edit_box_mouse(GotoEdit)
                END;
                box_lib.check_box_mouse2(CS);
                box_lib.check_box_mouse2(WH);
                box_lib.check_box_mouse2(BKW);
                IF box_lib.check_box_get_value(CS) # cs THEN
                    cs := ~cs;
                    notFound := ~T.search(text, searchText, cs, whole);
                    repaint
                END;
                IF box_lib.check_box_get_value(WH) # whole THEN
                    whole := ~whole;
                    notFound := ~T.search(text, searchText, cs, whole);
                    repaint
                END
            END;
            resized := FALSE
        |7: receiveIPC
        ELSE
        END
    END
END main;


BEGIN
    main
END CEdit.