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Text File | 1995-06-26 | 11KB | 703 lines

/*** * * Rldialg.prg * * Copyright (c) 1987-1993, Computer Associates International, Inc. * All rights reserved. * * Note: Compile with /m /n * */ /*** * * multibox() * * sysparam values: * 1 = initialize and display * 2 = hilite (become the current item) * 3 = dehilite (become a non-current item) * 4 = become a selected item and return a new state * * note that the above values are interpreted * differently by each function * * states: * 0 = abort the process * 1 = initialization * 2 = pointing (cursor) * 3 = entry/selection * 4 = complete the process * */ FUNCTION multibox PARAMETERS wt, wl, wh, beg_curs, boxarray PRIVATE funcn, sysparam, state, cursor, x PRIVATE asel, arel, frame, lframe asel = 1 arel = 0 frame = "╒═╕│╛═╘│" lframe = "╤═╕│╛═╧│" DECLARE box_row[LEN(boxarray)] DECLARE box_col[LEN(boxarray)] SAVE SCREEN @ wt, wl, wt + wh + 1, wl + 45 BOX frame + " " * state 1 ... initialization sysparam = 1 FOR cursor = 1 TO LEN(boxarray) funcn = boxarray[cursor] x = &funcn * each function leaves the cursor at its top left corner box_row[cursor] = ROW() box_col[cursor] = COL() NEXT cursor = beg_curs state = 2 DO WHILE state <> 0 .AND. state <> 4 * till completed or aborted funcn = boxarray[cursor] DO CASE CASE state = 2 * pointing state sysparam = 2 x = &funcn k = INKEY(0) DO CASE CASE k = 13 .OR. jisdata(k) * change to selection state state = 3 CASE k = 27 * abort state = 0 OTHERWISE * current item becomes uncurrent sysparam = 3 x = &funcn * get a new cursor cursor = matrix(cursor, k) ENDCASE CASE state = 3 * be selected and return a new state sysparam = 4 state = &funcn ENDCASE ENDDO RESTORE SCREEN RETURN state /*** * * title() * */ FUNCTION enter_title PARAMETERS sysparam IF sysparam = 1 @ wt + 1, wl + 2 SAY "Enter a filename " * set cursor for initialization @ wt + 1, wl + 2 SAY "" ENDIF RETURN 2 /*** * * save_title() * */ FUNCTION save_title PARAMETERS sysparam IF sysparam = 1 * watch out for the length of file, it may exceed the box width (path) @ wt + 3, wl + 4 SAY "Save Changes To File " + TRIM(filename) + "?" * set cursor for initialization @ wt + 3, wl + 4 SAY "" ENDIF RETURN 2 /*** * * rl_getfil() * * get filename * */ FUNCTION rl_getfil PARAMETERS sysparam DO CASE CASE sysparam = 1 .OR. sysparam = 3 @ wt + 3, wl + 2 SAY "File " + SUBSTR(filename, 1, 20) IF sysparam = 1 * set cursor for initialization @ wt + 3, wl + 9 SAY "" ENDIF CASE sysparam = 2 * be current...hilite SET COLOR TO I @ wt + 3, wl + 7 SAY SUBSTR(filename, 1, 20) SET COLOR TO BG+/B CASE sysparam = 4 * be selected...perform a GET on entry field Note: any other 'isdata' key will also execute selection IF k <> 13 KEYBOARD CHR(k) ENDIF filename = jenter_rc(filename, wt + 3, wl + 7, 64, "@K!S20") SET CURSOR ON READ SET CURSOR OFF IF LASTKEY() = 13 .AND. .NOT. EMPTY(filename) * filename has been selected...go to the ok button filename = JPAD(filename,20) @ wt + 3, wl + 7 SAY filename to_ok() ENDIF ENDCASE RETURN 2 /*** * * filelist() * */ FUNCTION filelist PARAMETERS sysparam PRIVATE c DO CASE CASE sysparam = 1 * clear the window scroll(wt + 1, wl + 31, wt + wh, wl + 44, 0) @ wt, wl + 30, wt + wh + 1, wl + 45 BOX lframe IF .NOT. EMPTY(files[1]) * display the files list KEYBOARD CHR(27) achoice(wt+1,wl+32,wt+wh,wl+43,files,"ch_func",0,asel,arel) ENDIF * set cursor for initialization @ wt + 1, wl + 32 SAY "" CASE sysparam = 2 IF EMPTY(files[1]) * cannot cursor onto an empty list KEYBOARD CHR(219) ELSE * set initial relative row and array element asel = asel - arel + ROW() - wt - 1 arel = ROW() - wt - 1 * do the list selection c = achoice(wt+1,wl+32,wt+wh,wl+43,files,"ch_func",0,asel,arel) IF LASTKEY() = 13 * filename selected from list...set memvar filename = SUBSTR(files[c] + SPACE(64), 1, 64) * display filename in entry blank rl_getfil(3) * go directly to ok button to_ok() ELSE IF LASTKEY() = 19 * the system responds to CHR(19) as ^S KEYBOARD CHR(219) ELSE * send character to multibox KEYBOARD CHR(LASTKEY()) ENDIF ENDIF ENDIF ENDCASE RETURN 2 /*** * * ok_button() * */ FUNCTION ok_button PARAMETERS sysparam PRIVATE ok, reply ok = " Ok " reply = 2 DO CASE CASE sysparam = 1 .OR. sysparam = 3 @ wt + wh, wl + 9 SAY ok IF sysparam = 1 * set cursor for initialization @ wt + wh, wl + 9 SAY "" ENDIF CASE sysparam = 2 * be current...hilite SET COLOR TO I @ wt + wh, wl + 9 SAY ok SET COLOR TO BG+/B CASE sysparam = 4 IF &okee_dokee * a job well done...complete the process reply = 4 ENDIF ENDCASE RETURN reply /*** * * cancel_button() * */ FUNCTION cancel_button PARAMETERS sysparam PRIVATE can, reply can = " Cancel " reply = 2 DO CASE CASE sysparam = 1 .OR. sysparam = 3 @ wt + wh, wl + 17 SAY can IF sysparam = 1 * set cursor for initialization @ wt + wh, wl + 17 SAY "" ENDIF CASE sysparam = 2 * be current...hilite SET COLOR TO I @ wt + wh, wl + 17 SAY can SET COLOR TO BG+/B CASE sysparam = 4 * cancel selected...abort the process reply = 0 ENDCASE RETURN reply /*** * * can_button() * * cancel button for save file box * */ FUNCTION can_button PARAMETERS sysparam PRIVATE can, reply can = " Cancel " reply = 2 DO CASE CASE sysparam = 1 .OR. sysparam = 3 @ wt + wh, wl + 25 SAY can IF sysparam = 1 * set cursor for initialization @ wt + wh, wl + 25 SAY "" ENDIF CASE sysparam = 2 * be current...hilite SET COLOR TO I @ wt + wh, wl + 25 SAY can SET COLOR TO BG+/B CASE sysparam = 4 * cancel selected...abort the process reply = 0 ENDCASE RETURN reply /*** * * no_button() * */ FUNCTION no_button PARAMETERS sysparam PRIVATE no, reply no = " No " reply = 2 DO CASE CASE sysparam = 1 .OR. sysparam = 3 @ wt + wh, wl + 13 SAY no IF sysparam = 1 * set cursor for initialization @ wt + wh, wl + 13 SAY "" ENDIF CASE sysparam = 2 * be current...hilite SET COLOR TO I @ wt + wh, wl + 13 SAY no SET COLOR TO BG+/B CASE sysparam = 4 * 'No' selected...abort the process reply = 0 no_save_flag = .T. ENDCASE RETURN reply /*** * * ch_func() * * achoice user function * */ FUNCTION ch_func PARAMETERS amod, sel, rel PRIVATE k, r, srow, scol srow = ROW() scol = COL() asel = sel arel = rel r = 2 IF asel > arel + 1 * more files off screen up @ wt + 1, wl + 44 SAY CHR(24) ELSE @ wt + 1, wl + 44 SAY " " ENDIF IF LEN(files) - asel > wh - 1 - arel * more files off screen down @ wt + wh, wl + 44 SAY CHR(25) ELSE @ wt + wh, wl + 44 SAY " " ENDIF IF amod = 3 k = LASTKEY() DO CASE CASE k = 27 * escape key r = 0 CASE k = 13 .OR. k = 19 .OR. k = 219 * return or left arrow r = 1 CASE k = 1 * home key..top of list KEYBOARD CHR(31) CASE k = 6 * end key..end of list KEYBOARD CHR(30) ENDCASE ENDIF @ M->srow, M->scol SAY "" RETURN r /*** * * do_it() * * called from the "Ok" button as "&okee_dokee" * this function normally completes the process * */ FUNCTION do_it PRIVATE done, error_str DO CASE * error if empty filename CASE EMPTY(filename) && error, empty filename KEYBOARD CHR(5) done = .F. OTHERWISE done = .T. ENDCASE RETURN done /*** * * matrix() * * relocate cursor * */ FUNCTION matrix PARAMETERS old_curs, k PRIVATE old_row, old_col, test_curs, new_curs old_row = ROW() old_col = box_col[old_curs] new_curs = old_curs test_curs = old_curs DO CASE CASE k = 19 .OR. k = 219 * left arrow DO WHILE test_curs > 2 test_curs = test_curs - 1 IF box_col[test_curs] < old_col .AND. box_row[test_curs] >= old_row IF box_row[test_curs] < box_row[new_curs] .OR. new_curs = old_curs * best so far new_curs = test_curs ENDIF ENDIF ENDDO CASE k = 4 * right arrow DO WHILE test_curs < LEN(box_col) test_curs = test_curs + 1 IF box_col[test_curs] > old_col .AND. box_row[test_curs] <= old_row IF box_row[test_curs] > box_row[new_curs] .OR. new_curs = old_curs * best so far new_curs = test_curs ENDIF ENDIF ENDDO CASE k = 5 * up arrow DO WHILE test_curs > 2 test_curs = test_curs - 1 IF box_row[test_curs] < old_row .AND. box_col[test_curs] <= old_col IF box_col[test_curs] > box_col[new_curs] .OR. new_curs = old_curs * best so far new_curs = test_curs ENDIF ENDIF ENDDO CASE k = 24 * down arrow DO WHILE test_curs < LEN(box_row) test_curs = test_curs + 1 IF box_row[test_curs] > old_row .AND. box_col[test_curs] >= old_col IF box_col[test_curs] < box_col[new_curs] .OR. new_curs = old_curs * best so far new_curs = test_curs ENDIF ENDIF ENDDO ENDCASE RETURN new_curs /*** * * to_ok() * * go directly to ok button * */ FUNCTION to_ok cursor = ascan(boxarray, "ok_button(sysparam)") KEYBOARD CHR(219) RETURN 0 /*** * * jisdata() * * determine if a key is data suitable for entry in place * */ FUNCTION jisdata PARAMETERS k RETURN (M->k >= 32 .AND. M->k < 249 .AND. M->k <> 219 .AND. CHR(M->k) <> ";") /*** * * jenter_rc(r,c,max_len,pfunc) * * entry in place * */ FUNCTION jenter_rc PARAMETERS org_str,r,c,max_len,pfunc PRIVATE wk_str, keystroke wk_str = JPAD(org_str, max_len) SET CURSOR ON IF .NOT. EMPTY(pfunc) @ r,c GET wk_str PICTURE pfunc ELSE @ r,c GET wk_str ENDIF READ SET CURSOR OFF keystroke = LASTKEY() IF keystroke = 27 wk_str = "" ENDIF RETURN (TRIM(wk_str)) /*** * * jpad() * * syntax: jpad( <expC>, <expN> ) * * return: <expC> padded with spaces so that len( <expC> ) = <expN> * */ FUNCTION jpad PARAMETERS s, n RETURN(SUBSTR(s + SPACE(n), 1, n))