webadmin-devel

[webmin-devel] adding a "please wait" popup while executing time consuming commands

[marty l. <mal...@gm...>]

When having a custom module in webmin execute time consuming commands, how
would I add a
"please wait" message until the command is finished (without user
interaction).

I.e.:

start_please_wait();
system("long_command");
stop_please_wait();

marty

Re: [webmin-devel] adding a "please wait" popup while executing time consuming commands

[Jamie C. <jca...@we...>]

On 20/May/2014 09:27 marty leisner <mal...@gm...> wrote ..
> When having a custom module in webmin execute time consuming commands, how
> would I add a
> "please wait" message until the command is finished (without user
> interaction).
> 
> I.e.:
> 
> start_please_wait();
> system("long_command");
> stop_please_wait();

In some modules, I've had Webmin print out a series of dots (one per second)
while performing some long operation. The code is like :

print "Doing something slow ..";
launch_slow_op_in_background();
while(!done_slow_op()) {
  sleep(1);
  print ".";
  }
print "<br>\n";
print ".. done<p>\n";

 - Jamie

Re: [webmin-devel] adding a "please wait" popup while executing time consuming commands

[marty l. <mal...@gm...>]

I'm having a problem where my page is delivered on the network at the same
time -- after the delay (I used wireshark to
monitor this)

What I want tried is:

ui_print_header('please wait');
footer();
sleep(5);
print "final\n<BR>";

I would have expected to see the header render, a delay, and "final".

Its all happening after the delay.

What I really want to do is:

display "please wait"
run a long command
redirect to another page (after the command runs)

marty


On Tue, May 20, 2014 at 4:19 PM, Jamie Cameron <jca...@we...> wrote:

> On 20/May/2014 09:27 marty leisner <mal...@gm...> wrote ..
> > When having a custom module in webmin execute time consuming commands,
> how
> > would I add a
> > "please wait" message until the command is finished (without user
> > interaction).
> >
> > I.e.:
> >
> > start_please_wait();
> > system("long_command");
> > stop_please_wait();
>
> In some modules, I've had Webmin print out a series of dots (one per
> second)
> while performing some long operation. The code is like :
>
> print "Doing something slow ..";
> launch_slow_op_in_background();
> while(!done_slow_op()) {
>   sleep(1);
>   print ".";
>   }
> print "<br>\n";
> print ".. done<p>\n";
>
>  - Jamie
>
>
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Re: [webmin-devel] adding a "please wait" popup while executing time consuming commands

[Charlie G. <gar...@ze...>]

Good afternoon,

On 21/05/14 at 12:20 AM -0400, marty leisner 
<mal...@gm...> wrote:

>I would have expected to see the header render, a delay, and "final".
>
>Its all happening after the delay.

Sounds like print buffering. Either print enough content to 
flush buffer, or disable the buffer. I don't recall the syntax 
but google will find it for you quickly enough. Something like:

$| = 1;


Charlie

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