Subj : Replacing a text string to execute JS code directly
To   : Nightfox
From : Digital Man
Date : Fri Feb 07 2025 21:26:09

  Re: Replacing a text string to execute JS code directly
  By: Nightfox to Digital Man on Fri Feb 07 2025 04:52 pm

 >   Re: Replacing a text string to execute JS code directly
 >   By: Digital Man to Nightfox on Wed Jan 29 2025 02:43 pm
 >
 >  DM> Object.defineProperty(js.global, "prop", {
 >  DM>     get : function () {
 >  DM>         return "hello, world";
 >  DM>     }
 >  DM> });
 >
 >  DM> bbs.replace_text("Pause", "@JS:" + "prop@"); // @-code split for
 >  DM> posting
 >
 > I'm following this pattern to replace AreYouThere, and it seems like after
 > the get function executes and returns, it seems like something wonky is
 > going on with screen refreshing. With DDMsgReader, it seems there is a bit
 > of scrolling on the screen and/or something wonky is going on with cursor
 > movement via cursor.gotoxy().  Within the get function though, I've used
 > cursor.gotoxy() and output a message, that worked as expected.
 >
 > I tried updating my get function to just return ""; and did a test with
 > DDMsgReader.  Before the the timeout warning, I had the user account looking
 > at the message reading screen in DDMsgReader:
 >
 > http://www.digitaldistortionbbs.com:81/synchronet_stuff/reading1.png
 >
 > I waited for the configured amount of time, and after the get() was called
 > for AreYouThere (returning ""), I pressed the down arrow, which should
 > scroll the message down one line, and the screen was then as follows:
 >
 > http://www.digitaldistortionbbs.com:81/synchronet_stuff/reading_AfterAYT_AD.
 > png
 >
 > If the getter is returning an empty string, I'm not sure what's causing the
 > display to become messy.  This does not happen if I replace AreYouThere with
 > a simple empty string as follows:
 >
 > bbs.replace_text(AreYouThere, "");

Probably because of this logic in the getkey():

      if ((sys_status & SS_USERON) && *text[AreYouThere] != '\0') {
          attr(LIGHTGRAY);
          carriage_return();
          cleartoeol();
          restoreline();
      }

So you'll probably want to bbs.replaceText(AreYouThere, "") in the getter, so you don't have this carriage-return, CLR-TO-EOL and restore line stuff going on.
-- 
                                            digital man (rob)

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