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When a timeline completes, you will probably want something to happen. We do, so let's add an Event Handler to take care of the onFinished property.
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So we know that when that clock hits zero,
we want some stuff to happen.
0:00
Let's go look at how to know
the attempt is completed, and
0:04
then figure out how to, and
what stuff we should do.
0:08
First, let's clean up that to do.
0:12
We definitely wanna stop the existing
timelines from running, so
0:13
that seems like we wanna do that.
0:17
Every time we create or
0:19
prepare a new attempt, we wanna wipe
out that existing timeline permanently.
0:21
So, let's take a look.
0:26
Let's think this through a little bit.
0:28
Let's come up here.
0:29
It seems like right about here, right?
0:31
So, there's gonna be a chance
that mTimeLine's not set.
0:34
So, we're gonna have to say,
like, it hasn't started yet.
0:38
So if it's not equal to null,
0:42
that's always a good thing
to do to check otherwise.
0:44
When you go to access a property, like,
we wanna see if it's running, right?
0:48
We wanna see if the thing's running.
0:52
So we're gonna say, get status.
0:53
And if I didn't check for that null,
what would happen when I called this,
0:55
we would get a null pointer exception.
0:58
And those are no fun.
1:00
So you'll always want to
check the state of things.
1:01
So then we're gonna say if the status, and
1:03
this status returns an enumeration
of animation.status.running.
1:07
That is a long looking line, isn't it.
1:17
So if it's not null and it is running,
we should just stop it.
1:22
So we'll say mTimeLine.stop[};, okay?
1:27
So that will stop it from
playing into the future.
1:30
Cool, we got that taken care of,
but you know what?
1:33
Those first couple of lines there, they
kind of look like they belong together in
1:35
some sort of method, don't they?
1:39
When stuff starts feeling like that,
1:41
like that doesn't really feel
like it's very succinct.
1:42
Like if I just look at this
like what is going on there?
1:44
Why don't we refactor this into a single
method and that way it will be cleaner as
1:47
to what's happening, as well as
the method could be called elsewhere.
1:50
So, when you get this feeling, a nice
thing to do is you come in here like this,
1:54
and you right click it and
choose Refactor, Refactor,
1:58
and we're gonna choose extract, and
let's extract that one more time.
2:02
Extract, and
we're gonna extract a method okay?
2:08
Private is fine, let's call that something
that makes sense for both of those.
2:16
We kinda want to reset things, right?
2:21
So let's call that reset doesn't
take any types, and click OK.
2:22
Okay, awesome.
2:28
So what it did is it took those and put
them into this new method down here, cool.
2:31
That's much cleaner now, I think.
2:34
We come in, we prepare the new attempt,
we reset the board.
2:36
So anything that we need to do that
resets the way that that screen looks,
2:38
we just put that function now.
2:41
And if we need to call that elsewhere,
we can also call it elsewhere.
2:43
Or if it makes sense at a higher level,
we could put that above that, make sense?
2:46
Great, now what we were doing?
2:51
Oh yeah.
2:53
Let's take a peek back
over here at the board.
2:54
So we still can't complete this one yet,
right?
2:56
Because as a user,
I should know what state I'm in.
2:58
If it's focus/break,
we have that going on.
3:01
We don't have paused yet, so
we're kinda blocked on that.
3:03
I guess we should start this one.
3:07
As a user in a Pomodoro attempt, I should
be notified when the attempt completes, so
3:08
that I'm aware of what my next step
should be, break or focus, okay.
3:12
That's cool, we can do that.
3:16
And while we're in here,
why don't we take a look at this one.
3:18
As a user, I should be able to
detail what my Pomodoro was about so
3:21
I can keep track of what's happened for
future planning.
3:24
So let's drag that over.
3:27
Okay, so we've got three of them.
3:29
We better get cranking on some of these.
3:30
We aren't actually going to save anything,
but let's mock it out.
3:33
So, let's flip back.
3:38
Okay, so, we want something to
happen when the timeline finishes.
3:41
You know,
when all the pages have gone through.
3:46
Well the good news is that an event
is fired when the timeline completes.
3:48
And it exposes a way for you to register
an event handler when it completes.
3:52
So let's do that.
3:55
And it's called setOnFinished.
4:01
And it expects an event handler which
means we can pass in a lambda like we have
4:04
been, which takes an event and
let's make it a multi-line.
4:09
I'm gonna do a couple things in here.
4:13
So, here is one of those weird cases where
a ternary might actually make sense.
4:15
Do you remember what ternaries are?
4:19
So, it's when you have the option
to go between two different things.
4:21
So, we want to prepare an attempt, and we
want to prepare the next attempt, right?
4:25
But how do we know what that is?
4:29
So, if we say that we
get the current attempt,
4:31
we get the kind of attempt that it is.
4:35
That's equal to focus,
well then the next one we know is break.
4:39
[INAUDIBLE] is right over,
my typing's bad there.
4:49
It's hard to see.
4:53
AttemptKind.BREAK, otherwise it's a FOCUS.
4:54
Does that make sense?
5:04
So it's saying, if the current Kind
is FOCUS, then switch it to break.
5:10
Otherwise, switch it to focus.
5:18
Make sense?
5:20
So that should take care of that
first ticket that we looked at.
5:21
Now the second one.
5:24
So we want to save the current attempt.
5:25
So we should probably do that before
we prepare the attempt right.
5:29
So let's come in here and
let's make a method.
5:32
I feel like we might be calling
this a couple more times.
5:35
So we're going to say save CurrentAttempt,
5:37
it's a method we that
haven't declared yet.
5:41
So, let's just go ahead and
have it build one for us, awesome.
5:43
You don't really have anything set
up on our actual model to save.
5:48
So, let's just make a mock method.
5:53
So let's do that.
5:56
We'll just have it print out
what we're going to save or
5:57
what it is that it's saving.
5:59
So let's so that.
So let's say mCurrentAttempt.save.
6:00
And of course, that method doesn't exist.
6:04
Let's go create it, okay.
6:07
So here let's print out Saving,
cuz we don't have a database set up and
6:10
it's kinda out of the scope
of where we're at here.
6:16
But it would save if this method existed.
6:19
And this is typically what it is called on
a model as you save it up to the database.
6:22
So we wanna print out the current object.
6:26
And the way that you do that is
with the keyword this, right?
6:29
That's referring to this instance,
make sense?
6:32
Oh yeah, you know what?
6:37
That reminds me we should generate
one of those toStrings methods and
6:38
this IDE will do it for us so
we're gonna generate to string, and
6:41
yeah all that stuff,
let's generate it all.
6:46
Cool, okay,
now one thing that we need to remember
6:50
is that we need to get the value
out of that message field.
6:54
Do you remember that we had
the message field at the bottom?
6:57
We could bind to that right.
7:00
So we could bind to it and
7:01
say every time that that field changes,
update the message.
7:02
But that seems like a little overkill.
7:06
Think if we just have this save current
attempt method and write right before we
7:07
save it, we go and get that value if
we say mCurrentAttempt.setMessage.
7:11
You know what,
why don't you go ahead and pause me?
7:18
I want you to pull the value
out of the message field.
7:22
Now, the message field isn't over here yet
in the controller.
7:25
How do we get that over here,
can you figure that out?
7:28
Pause me and come back.
7:30
Okay, did you get it?
7:33
Cool, so over at home.xml if we look down
here, this text area has an ID of message.
7:35
So let's flip back over here.
7:42
We will say @fxml that
is a private text area.
7:46
Be very careful not to get the java
awt It's a common, common error, so
7:53
this TextArea here is the one that
we want, and it is called message;.
7:57
Cool, so then if we come back
to where we were, sorry,
8:02
I am scrolling all over the place,
save message,
8:05
we wanna get message.getText cool, right?
8:10
Let's see how we did.
8:16
Two tickets,
let's see if we did two at once.
8:18
So, oh you know what though?
8:20
We don't have the play and
the pause button that's wound up.
8:22
I know, what if we change the temp,
8:25
temporarily we change the time that
was required on the first focus.
8:27
Then it would just switch over to break
and we'd make sure that we did it right.
8:31
So, let's go into our AttemptKind here.
8:34
And we'll go into our
definition of AttemptKind.
8:37
And let's change the Focus
time just temporarily.
8:40
Change that to three so we'll just
count down from three, all right.
8:44
Let's run it and see what happens.
8:48
So, we bound this button.
8:51
This restart button.
8:53
So it will go to three.
8:54
Two, one, boom.
8:54
Oh cool, and look.
8:58
Not only did it switch to break,
but it also saved and,
8:59
it doesn't have the message but
let's see if we can make it,
9:02
Have the message,
because we didn't have one there awesome.
9:09
It pulled the message and
the remaining seconds is zero.
9:13
So we can actually probably use that
save in a different way, right?
9:17
Whenever that restart was called,
we could do it.
9:21
Let's think about that.
9:25
Awesome job.
9:26
I hope you enjoyed the concept
of event listeners.
9:27
They are very prominent in most UI code
9:30
as it lets you hook into
different life cycles of objects.
9:33
So we pretty much got the visual stuff
in place to let the user know that
9:36
things are changing.
9:40
But if focus time is working correctly,
we should make sure that they really know.
9:41
We wanna snap them out of it.
9:46
Now JavaFX is super media friendly so
9:48
why don't play an appropriate
sound to get their attention?
9:51
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