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Logic Machine Forum › LogicMachine eco-system › Scripting v
javascript lp file

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javascript lp file
jmir Offline
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Posts: 180
Threads: 44
Joined: Sep 2015
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#1
20.10.2022, 11:02
Hi,

Is it possible to use javascript grp.taglisten(tag_name, callback_function, all_events); function inside a .lp file?

I'm trying to do it and i'm getting this error from the browser:
Uncaught ReferenceError: grp is not defined

Thanks
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admin Offline
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#2
20.10.2022, 11:24
grp.taglisten is only available in the visualization context. In apps/.lp files you can only listen to all group addresses. This only works for authorized users.
Code:
<!DOCTYPE html>
<html lang="en">
<head>
  <meta charset="UTF-8">
  <title>Localbus</title>
  <script src="/apps/js/jquery.js.gz"></script>
  <script src="/scada/vis/busdecode.js.gz"></script>
  <script src="/apps/js/localbus.js.gz"></script>
</head>
<body>
<script>
$(function() {
  localbus.init();
  localbus.listen('groupwrite', function(event) {
    console.log(event.dst, event.value);
  });
});
</script>
</body>
</html>
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jmir Offline
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Posts: 180
Threads: 44
Joined: Sep 2015
Reputation: 0
#3
20.10.2022, 12:08
Ok.

I've seen that event has no tag neither name info, is there any way to get it inside .lp file?
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admin Offline
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Posts: 7288
Threads: 40
Joined: Jun 2015
Reputation: 418
#4
20.10.2022, 12:37
This way you can filter events by a single tag:
Code:
<?
require('apps')

objs = grp.tag('TAGNAME')

tagobjs = {}
for _, obj in ipairs(objs) do
  tagobjs[ #tagobjs + 1 ] = obj.address
end
?>
<!DOCTYPE html>
<html lang="en">
<head>
  <meta charset="UTF-8">
  <title>Localbus</title>
  <script src="/apps/js/jquery.js.gz"></script>
  <script src="/scada/vis/busdecode.js.gz"></script>
  <script src="/apps/js/localbus.js.gz"></script>
</head>
<body>
<script>
$(function() {
  var tagobjs = <?=json.encode(tagobjs)?>;

  localbus.init();
  localbus.listen('groupwrite', function(event) {
    if (tagobjs.indexOf(event.dst) >= 0) {
      console.log(event.dst, event.value);
    }
  });
});
</script>
</body>
</html>
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jmir Offline
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Posts: 180
Threads: 44
Joined: Sep 2015
Reputation: 0
#5
21.10.2022, 06:37
Thanks it works!

But is there any way to get group address values when loading the page? I'd like to get them when opening the page and not wait until one of them is sent to the bus.
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admin Offline
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Posts: 7288
Threads: 40
Joined: Jun 2015
Reputation: 418
#6
21.10.2022, 06:45
Try this:
Code:
<?
require('apps')

objs = grp.tag('TAGNAME')

tagobjs = {}
for _, obj in ipairs(objs) do
  tagobjs[ #tagobjs + 1 ] = obj.address
end
?>
<!DOCTYPE html>
<html lang="en">
<head>
  <meta charset="UTF-8">
  <title>Localbus</title>
  <script src="/apps/js/jquery.js.gz"></script>
  <script src="/scada/vis/busdecode.js.gz"></script>
  <script src="/apps/js/localbus.js.gz"></script>
</head>
<body>
<script>
$(function() {
  var tagobjs = <?=json.encode(tagobjs)?>;

  function getvalue(addr) {
    var id = localbus.encodega(addr);
    return localbus.object[ id ];
  }

  $(localbus).on('connect', function() {
    console.log('connected');
    console.log(getvalue('0/0/1'));
  });

  localbus.init();
  localbus.listen('groupwrite', function(event) {
    if (tagobjs.indexOf(event.dst) >= 0) {
      console.log(event.dst, event.value);
    }
  });
});
</script>
</body>
</html>
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jmir Offline
Member
Posts: 180
Threads: 44
Joined: Sep 2015
Reputation: 0
#7
21.10.2022, 14:08
Perfect, thanks!
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