Add pause button

[levonet]

resolve #137

[levonet]

@mthenw Please see this PR

[levonet]

@mthenw ping

[mthenw]

Hey, I'm sorry about super late answer. What I actually see in this PR is a "ignore new lines" functionality. Could you elaborate more about what's the use case and are there any reported issues that this PR solves?

[levonet]

We use 'frontail' in our development infrastructure and it generating a large stream of logs.
To separate the necessary we use filters.

But first, it is difficult to keep some of the logs in view when adding and deleting new lines in the browser.
Second, the new data quickly displaces the necessary data from the buffer. We can't endlessly increase the number of rows that are stored in the browser.
Third, there is often a situation when you need to quickly stop the log in order not to search for the necessary information for a long time.
The 'pause' button solves these three problems.

[RickeyWard]

As a frequent frontail user I'm in support of this functionality, but I'd like to see it tell you how many new log lines you've missed since it's been paused. and leave that in the list when it's unpaused so it's clear that there is a gap in the data you're seeing.

[levonet]

@RickeyWard I will try to add a line with a counter.
Line like ==> SKIPED: 999 <==.

[levonet]

@mthenw What prevents you from accepting my contribution?

[mthenw]

@levonet sorry for being so terrible at answering. I'm basically not sure if this is the type of functionality that I want to include in frontail. I don't have any strong arguments, tho :(

Let's do this. I'm testing this functionality right now and will give you some feedback shortly.

[mthenw]

It works great. Just a few comments.

In the current implementation favicon badge updates as if there're new lines. But when the streaming is paused we shouldn't probably update it. Can you fix that?

[mthenw]

@levonet let me know if you are still willing to contribute (you already did a lot and I totally get it if you're no longer interested).

If not I will fix those few issues by myself.

[levonet]

In the current implementation favicon badge updates as if there're new lines. But when the streaming is paused we shouldn't probably update it. Can you fix that?

This problem occurs when the filter input loses focus.
Apparently, this problem was before my changes. I'll try to fix it.

[levonet]

@mthenw done

[mthenw]

@levonet thank you for your contribution and sorry that it took so long.