IMPLEMENTATION MODULE Scrn2Ndx;
(*
 *  REPERTOIRE
 *  Release 1.6
 *  By Charles Bradford and Cole Brecheen
 *  (c) Copyright 1985-1992 PMI
 *  Green Bay, Wisconsin
 *  All rights reserved
 *  (414) 468-6040
 *
 *  $Header:   D:/logfiles/mods/scrn2ndx.mov   1.5   10 Mar 1991 15:32:02   coleb  $
 *
 *)


IMPORT ControlUtils;
IMPORT GenLists;
IMPORT LowLevel;
IMPORT M2Strings;
IMPORT NdxBones;
IMPORT NdxFiles;
IMPORT NdxTypes;
IMPORT ScrnTypes;
IMPORT ScrnUtl1;
IMPORT StrEdit;
IMPORT SYSTEM;

VAR
  Initialized : BOOLEAN;

  PROCEDURE Init();
    BEGIN
      IF Initialized THEN
        RETURN;
      ELSE
        Initialized := TRUE;
      END;
      ControlUtils.Init();
      GenLists.Init();
      LowLevel.Init();
      M2Strings.Init();
      NdxBones.Init();
      NdxFiles.Init();
      NdxTypes.Init();
      ScrnTypes.Init();
      ScrnUtl1.Init();
      StrEdit.Init();
    END Init;

PROCEDURE PutScrRec( VAR NdxFile: NdxTypes.NdxFileType; VAR
    TheFrame: ScrnTypes.DisplayFrame; VAR RecName: ARRAY OF CHAR;
    KeyField: ARRAY OF CHAR): BOOLEAN;
  (* Puts current screen data in out as a record. If RecName is
     not null, it contains the record name to use. If RecName is
     null, KeyField contains the name of the field on the screen
     to use as the Record Name. RecName will always return the
     record name used. *)
  VAR
    FoundAny: BOOLEAN;
    FileStr: ARRAY [0..255] OF CHAR;
    TmpList, TmpList2: GenLists.GenList;
    FieldCount: CARDINAL;
    FieldRec: ScrnTypes.InputFieldRecord;
    ImageRec: ScrnTypes.ImageElement;

  BEGIN
    FoundAny := FALSE;
    IF M2Strings.Length( RecName) = 0 THEN
      (* read record name from field named in KeyField *)
      ControlUtils.ReadInput( TheFrame, RecName, KeyField);
    END;
    StrEdit.CrunchBlanks( RecName );
    FieldCount := 1;
    REPEAT
      (* flip through the named fields on screen and put
         their values in the record if they are in the
         structure *)
      ScrnUtl1.GetFieldRec( TheFrame, FieldCount, FieldRec );
      ScrnUtl1.GetImageRec( TheFrame, FieldRec.ImageNum, ImageRec );
      IF M2Strings.Length( FieldRec.fnam) # 0 THEN
        (* for each named field *)
        IF FieldRec.typ # ScrnTypes.GroupMember THEN
          (* for any field except a group *)
          IF FieldRec.typ = ScrnTypes.EditorCode THEN
            (*We store editor fields as sublists.*)
            IF ScrnUtl1.ListFromEdField( TheFrame, FieldCount, TmpList ) THEN
              GenLists.CopyList( TmpList, TmpList2 );
              FoundAny := NdxFiles.PutField( NdxFile, RecName, FieldRec.fnam,
                  GenLists.ListCode, TmpList2) OR FoundAny;
            END;
          ELSE
            StrEdit.CutTrailingChars( ' ', ImageRec.text );
            FoundAny := NdxFiles.PutField( NdxFile, RecName, FieldRec.fnam,
                GenLists.StrCode, ImageRec.text ) OR FoundAny;
          END;
        ELSIF FieldRec.selected THEN
          (* for selected members of a group put a ONE *)
          FoundAny := NdxFiles.PutField( NdxFile, RecName, FieldRec.fnam,
              GenLists.StrCode, '1') OR FoundAny;
        ELSE
          (* for non-selected members of a group put a NULL *)
          FoundAny := NdxFiles.PutField( NdxFile, RecName, FieldRec.fnam,
              GenLists.StrCode, '') OR FoundAny;
        END;
      END;
      INC( FieldCount );
    UNTIL FieldCount > ScrnUtl1.FieldListTotal( TheFrame );
    RETURN FoundAny;
  END PutScrRec;

PROCEDURE FillScr( VAR NdxFile: NdxTypes.NdxFileType; VAR
    TheFrame: ScrnTypes.DisplayFrame; VAR RecName: ARRAY OF CHAR;
    KeyField: ARRAY OF CHAR): BOOLEAN;
(* Fills the current screen with the data from the record named
   in RecName if RecName is not null. If RecName is null, KeyField
   contains the name of the field on the screen to use as the
   Record Name. RecName will always return the record name used.*)
  VAR
    FoundAny: BOOLEAN;
    FileStr, BlankStr: ARRAY [0..255] OF CHAR;
    FileLeng, ScrLeng, TheType: CARDINAL;
    TmpList, TmpList2: GenLists.GenList;
    FieldCount: CARDINAL;
    FieldRec: ScrnTypes.InputFieldRecord;
    ImageRec: ScrnTypes.ImageElement;

  BEGIN
    LowLevel.Fill( SYSTEM.ADR( BlankStr), HIGH(BlankStr) + 1, ' ');
    FoundAny := FALSE;
    IF M2Strings.Length( RecName) = 0 THEN
      (* read record name from field named in KeyField *)
      ControlUtils.ReadInput( TheFrame, RecName, KeyField);
    END;
    StrEdit.CrunchBlanks( RecName );
    FieldCount := 1;
    REPEAT
      (* flip through the named fields on screen and extract
         their value from the file if they exist there *)
      ScrnUtl1.GetFieldRec( TheFrame, FieldCount, FieldRec );
      ScrnUtl1.GetImageRec( TheFrame, FieldRec.ImageNum, ImageRec );
      IF (M2Strings.Length( FieldRec.fnam) # 0) AND
         NdxFiles.GetField( NdxFile, RecName, FieldRec.fnam,
              TheType, FileStr) THEN
        (* for each named field we can get from the file *)
        IF FieldRec.typ # ScrnTypes.GroupMember THEN
          (* for any field except a group *)
          FoundAny := TRUE;
          IF TheType = GenLists.StrCode THEN
            FileLeng := M2Strings.Length( FileStr);
            ScrLeng := M2Strings.Length( ImageRec.text);
            IF FileLeng < ScrLeng THEN
              (*We need to pad out stored string with blanks to
                match length of screen field.*)
              StrEdit.SetLength( BlankStr, ScrLeng - FileLeng);
              StrEdit.Append( FileStr, BlankStr);
            END;
            IF FieldRec.typ # ScrnTypes.EditorCode THEN
              StrEdit.AssignStr( FileStr, ImageRec.text);
            ELSE
              GenLists.NewList( TmpList );
              GenLists.ListInsert( FileStr, GenLists.StrCode, TmpList, 1 );
              IF NOT ScrnUtl1.ListToEdField( TmpList, TheFrame,
                  FieldCount ) THEN
                HALT();
              END;
            END;
          ELSIF TheType = GenLists.ListCode THEN
            IF FieldRec.typ = ScrnTypes.EditorCode THEN
              (*Make sure it's an editor field before we fill
                it with a list.*)
              IF NdxFiles.GetField( NdxFile, RecName,
                  FieldRec.fnam, TheType, TmpList ) THEN
                GenLists.CopyList( TmpList, TmpList2 );
                IF NOT ScrnUtl1.ListToEdField( TmpList2, TheFrame,
                    FieldCount ) THEN
                  HALT();
                END;
              END;
            END;
          (*You could add additional data conversion operations
            here.*)
          END;
        ELSE
          (* for members of a group *)
          FoundAny := TRUE;
          FieldRec.selected := M2Strings.Length( FileStr) # 0;
          (* this simple logic assumes that the groups are the
             same on input and display screens *)
        END;
        ScrnUtl1.PutFieldImageRec( ImageRec, TheFrame, FieldCount );
        ScrnUtl1.PutFieldRec( FieldRec, TheFrame, FieldCount );
      END;
      INC( FieldCount );
    UNTIL FieldCount > ScrnUtl1.FieldListTotal( TheFrame );
    RETURN FoundAny;
  END FillScr;


PROCEDURE PutScrFast( VAR NdxFile: NdxTypes.NdxFileType; VAR
    TheFrame: ScrnTypes.DisplayFrame; VAR RecName: ARRAY OF CHAR;
    KeyField: ARRAY OF CHAR): BOOLEAN;
(* Works like PutScrRec except that it requires an exact match
   between all named fields in the screen and the file record *)
  VAR
    Selctd: BOOLEAN;
    FileStr: ARRAY [0..255] OF CHAR;
    TmpList, TmpList2: GenLists.GenList;
    FileCntr, FileStructLen: CARDINAL;
    FieldCount: CARDINAL;
    FieldRec: ScrnTypes.InputFieldRecord;
    ImageRec: ScrnTypes.ImageElement;

  BEGIN
    IF M2Strings.Length( RecName) = 0 THEN
      (* read record name from field named in KeyField *)
      ControlUtils.ReadInput( TheFrame, RecName, KeyField);
    END;
    StrEdit.CrunchBlanks( RecName );
    IF NOT NdxBones.InitBuffer( NdxFile, RecName) THEN
      (* Loads file buffer with desired record; false result
         probably indicates we're creating a new record, but
         could actually indicate an error.  We trust that we
         will catch an error below. *)
    END;
    FieldCount := 1;
    FileCntr := 0;
    (* used to count fields written to record *)
    FileStructLen := GenLists.ListLength( NdxFile^.ListBuf);
    REPEAT
      (* flip through the named fields on screen and store
         each in the record *)
      ScrnUtl1.GetFieldRec( TheFrame, FieldCount, FieldRec );
      ScrnUtl1.GetImageRec( TheFrame, FieldRec.ImageNum, ImageRec );
      IF M2Strings.Length( FieldRec.fnam) # 0 THEN
        (* for each named field *)
        INC( FileCntr);
        (* go to next field in file *)
        IF FileCntr > FileStructLen THEN
          RETURN FALSE;
        END;
        IF FieldRec.typ # ScrnTypes.GroupMember THEN
          (* for any field except a group *)
          IF FieldRec.typ = ScrnTypes.EditorCode THEN
            (*We store editor fields as sublists.*)
            IF ScrnUtl1.ListFromEdField( TheFrame, FieldCount, TmpList ) THEN
              GenLists.CopyList( TmpList, TmpList2 );
              GenLists.ListReplace( TmpList2, GenLists.ListCode,
                  NdxFile^.ListBuf, FileCntr);
            END;
          ELSE
            StrEdit.CutTrailingChars( ' ', ImageRec.text );
            GenLists.ListReplace( ImageRec.text, GenLists.StrCode,
                NdxFile^.ListBuf, FileCntr);
          END;
        ELSIF FieldRec.selected THEN
          (* for selected members of a group put a ONE *)
          GenLists.ListReplace( '1', GenLists.StrCode,
              NdxFile^.ListBuf, FileCntr);
        ELSE
          (* for non-selected members of a group put a NULL *)
          GenLists.ListReplace( '', GenLists.StrCode,
              NdxFile^.ListBuf, FileCntr);
        END;
      END;
      INC( FieldCount );
    UNTIL FieldCount > ScrnUtl1.FieldListTotal( TheFrame );
    RETURN TRUE;
   END PutScrFast;


PROCEDURE FillScrFast( VAR NdxFile: NdxTypes.NdxFileType; VAR
    TheFrame: ScrnTypes.DisplayFrame; VAR RecName: ARRAY OF CHAR;
    KeyField: ARRAY OF CHAR): BOOLEAN;
(* Fills the current screen with the data from a record. Works
   like FillScr except that it requires an exact match between all
   named fields in the screen and the fields in the file record *)
  VAR
    Selctd : BOOLEAN;
    FileStr, BlankStr: ARRAY [0..255] OF CHAR;
    FileLeng, ScrLeng, TheType, FileCntr,
        FileStructLen: CARDINAL;
    TmpList, TmpList2: GenLists.GenList;
    FieldCount: CARDINAL;
    FieldRec: ScrnTypes.InputFieldRecord;
    ImageRec: ScrnTypes.ImageElement;

  BEGIN
    LowLevel.Fill( SYSTEM.ADR( BlankStr), HIGH(BlankStr) + 1, ' ');
    IF M2Strings.Length( RecName) = 0 THEN
      (* read record name from field named in KeyField *)
      ControlUtils.ReadInput( TheFrame, RecName, KeyField);
    END;
    StrEdit.CrunchBlanks( RecName );
    IF NOT NdxBones.InitBuffer( NdxFile, RecName) THEN
      (* loads file buffer with desired record *)
      RETURN FALSE;
    END;
    FieldCount := 1;
    FileCntr := 0;
    FileStructLen := GenLists.ListLength( NdxFile^.ListBuf);
    REPEAT
      (* flip through the named fields on screen and, for
         each, extract the next field in the file record *)
      ScrnUtl1.GetFieldRec( TheFrame, FieldCount, FieldRec );
      ScrnUtl1.GetImageRec( TheFrame, FieldRec.ImageNum, ImageRec );
      IF M2Strings.Length( FieldRec.fnam) # 0 THEN
        (* for each named field *)
        INC( FileCntr);
        (* go to next field in file *)
        IF FileCntr > FileStructLen THEN
          RETURN FALSE;
        END;
        GenLists.GetElmt( NdxFile^.ListBuf, FileCntr, FileStr, TheType);
        (*Read file value.*)
        IF FieldRec.typ # ScrnTypes.GroupMember THEN
          (* for any field except a group *)
          IF TheType = GenLists.StrCode THEN
            FileLeng := M2Strings.Length( FileStr);
            ScrLeng := M2Strings.Length( ImageRec.text);
            IF FileLeng < ScrLeng THEN
              (*We need to pad out stored string with blanks to
                match length of screen field.*)
              StrEdit.SetLength( BlankStr, ScrLeng - FileLeng);
              StrEdit.Append( FileStr, BlankStr);
            END;
            IF FieldRec.typ # ScrnTypes.EditorCode THEN
              StrEdit.AssignStr( FileStr, ImageRec.text);
            ELSE
              GenLists.NewList( TmpList );
              GenLists.ListInsert( FileStr, GenLists.StrCode, TmpList, 1 );
              IF NOT ScrnUtl1.ListToEdField( TmpList, TheFrame,
                  FieldCount ) THEN
                HALT();
              END;
            END;
          ELSIF TheType = GenLists.ListCode THEN
            IF FieldRec.typ = ScrnTypes.EditorCode THEN
              (*Make sure it's an editor field before we fill
                it with a list.*)
              GenLists.GetChildList( NdxFile^.ListBuf, FileCntr, TmpList);
              GenLists.CopyList( TmpList, TmpList2 );
              IF NOT ScrnUtl1.ListToEdField( TmpList2, TheFrame,
                  FieldCount ) THEN
                HALT();
              END;
            END;
          (*You could add additional data conversion operations
            here.*)
          END;
        ELSE
          (* for members of a group *)
          FieldRec.selected := M2Strings.Length( FileStr) # 0;
          (* this simple logic assumes that the groups are the
             same on input and display screens *)
        END;
        ScrnUtl1.PutFieldImageRec( ImageRec, TheFrame, FieldCount );
        ScrnUtl1.PutFieldRec( FieldRec, TheFrame, FieldCount );
      END;
      INC( FieldCount );
    UNTIL FieldCount > ScrnUtl1.FieldListTotal( TheFrame );
    RETURN TRUE;
  END FillScrFast;


BEGIN
  Initialized := FALSE;
  Init();
END Scrn2Ndx.