Michael D Sims

Weird tabstop behavior with a hidden control

I have a button that I use to delete records from a tableview. When a record is selected in the view, then that delete button becomes visible, and when no record is selected, that button is hidden (visible property set to false).

What is weird, is that when I am tabbing controls on the form, that button will get a tabstop landing and become visible while it has focus.

I tried to find a way to exclude the button from having any tabindex, but I can't seem to find a way to do that ... and perhaps my approach to the problem is wrong in the first place.

SO, does anyone know how I can make sure that this non-visible button does not get focus during the activity of tabbing between controls on my form, or perhaps some way to make it invisible with enough certainty that it becomes overlooked when tabbing around the form?

Thank you,

Mike

4 years ago

Any decent apps out there for storing code snippets?

Hello,

Anyone know of any decent apps out there that one could use to store pieces of code we write that we can later reuse? I find myself scouring through old projects from time to time looking for some function I previously figured out, or some class that was - at the time - a stroke of genius lol ... but that search process can be a tedious one. If I had an app that I could use where I see that I've written a class or something and realizing I may want to use it in the future, it would be nice to have all that in one place where I could categorize it etc.

I did some Googling around on the topic but I didn't find anything. I'm sure I'm not searching with the right verbiage.

Thanks,

Mike

4 years ago

How to reference the parent class from a ChangeListener

Paul Clapham wrote:I would just suggest it isn't really a worthy goal. Unless you have many thousands of TextFields, the memory used by creating one listener per TextField isn't worth worrying about.

I sort of worked myself into that conclusion while I was waiting for a reply to my post. I always look for more efficient ways to code wherever possible, even if the time/value benefit doesn't exist. It's code for personal use so no real loss in the learning curve.

☺

Cheers!

5 years ago

How to reference the parent class from a ChangeListener

I have a slew of TextFields, where I need to place a ChangeListener on their respective focusedProperty. Instead of creating a ChangeListener for each individual TextField, I want to write a generic ChangeListener<Boolean> one time, then re-use that by assigning it to each TextFields focusedProperty. Then, within that ChangeListener, I would like to use the observable object passed into the ChangeListener to somehow gain reference back to the TextField class so that I can get to the actual text that the user typed into the TextField itself.

So the way it would work, is when someone types text into the a TextField, then tabs out of the field, the focusedProperty ChangeListener that I assigned will trigger where I can then take action on the text that the user typed.

Is it possible to do this?

Thank you,

Mike

5 years ago

Styling a TableView - problem with row selection

I have a table created and a stylesheet assigned to it and for the most part it's looking the way I want it to but when I select a row, the background color for the selection does not line up with the text in the row... I have attached a photo to show you what I mean.

And here is the relevant style coding that I'm using (relevant as far as I know ... my css knowledge is sketchy at best):

Any idea what I can do to get that selection background color to line up properly with the text?

Thank you,

Mike Sims

5 years ago

Campbell Ritchie wrote:

Paul Clapham wrote:. . . Probably the word "D'oh" wasn't invented specifically for computer programmers . . .

Are you telling me Homer Simpson didn't invent it himself?

I watched a documentary on this and some very credible Area 51 "researchers" presented a good case for this ... BUT ... as per usual ... no definitive, clear cut evidence ever emerges...

6 years ago

The summonCards() method in the Cards class should have been deleted . ... my bad.

6 years ago

52 Cards Ace of spades Two of spades Three of spades Four of spades Five of spades Six of spades Seven of spades Eight of spades Nine of spades Ten of spades Jack of spades Queen of spades King of spades Ace of hearts Two of hearts Three of hearts Four of hearts Five of hearts Six of hearts Seven of hearts Eight of hearts Nine of hearts Ten of hearts Jack of hearts Queen of hearts King of hearts Ace of clubs Two of clubs Three of clubs Four of clubs Five of clubs Six of clubs Seven of clubs Eight of clubs Nine of clubs Ten of clubs Jack of clubs Queen of clubs King of clubs Ace of diamonds Two of diamonds Three of diamonds Four of diamonds Five of diamonds Six of diamonds Seven of diamonds Eight of diamonds Nine of diamonds Ten of diamonds Jack of diamonds Queen of diamonds King of diamonds

6 years ago

Campbell Ritchie wrote:I am not sure that will work, because OP is required to produce a List<Card>. I don't know why she said anything about a List<Integer>.

OOPS...

6 years ago

Stephan van Hulst wrote:To my regret, I'm very VERY familiar with these kinds of d'oh moments.

When I realized my efforts were not giving me success when I knew it should be working, I realized my head was too fuzzy and that a fresh pair of eyes would be bound to see it. This s why these forums are awesome!

6 years ago

Stephan van Hulst wrote:Well yeah, you have an extra comma in the format string after the month specifier.

MAN!!! Im so glad I posted this I would have continued overlooking that for god knows how long.

THANK YOU, it works now.

6 years ago

Ana Yo wrote:Hi there, I just started learning about ArrayLists and I am trying to implement a deck of cards. The instructions are:
/*Pre-condition: none
*Post-condition: A new ArrayList of cards will be created with 52 cards.
*There will be 4 suits with 13 cards each.
*/
This is what I have so far:
public StandardDeck() { ArrayList<Integer> totalCards = new ArrayList<Integer>(52); String suits[] = {"spades", "hearts", "clovers", "diamonds"}; String cards[] = {"Ace", "2", "3", "4", "5", "6", "7", "8", "9", "10", "Joker", "Queen", "King"}; } }
I don't know if I should add more code or not.

Output:
Ace of spades Two of spades Three of spades Four of spades Five of spades Six of spades Seven of spades Eight of spades Nine of spades Ten of spades Jack of spades Queen of spades King of spades Ace of hearts Two of hearts Three of hearts Four of hearts Five of hearts Six of hearts Seven of hearts Eight of hearts Nine of hearts Ten of hearts Jack of hearts Queen of hearts King of hearts Ace of clubs Two of clubs Three of clubs Four of clubs Five of clubs Six of clubs Seven of clubs Eight of clubs Nine of clubs Ten of clubs Jack of clubs Queen of clubs King of clubs Ace of diamonds Two of diamonds Three of diamonds Four of diamonds Five of diamonds Six of diamonds Seven of diamonds Eight of diamonds Nine of diamonds Ten of diamonds Jack of diamonds Queen of diamonds King of diamonds 52 Cards

6 years ago

Hello,

Been racking my brain on this too long and I need some fresh perspective please.

I am trying to convert dates / times that are given to me like this: Thursday, January 25, 2018 at 3:50pm PST in to a MySQL Timestamp.

I've been trying to use JodaTime to do this conversion but i don't really care what I use as long as I can get it converted - which means if you have an alternate method to show me, please do.

Here is the code that I've been trying to accomplish this with:

When I execute this code, the compiler throws an Exception that looks like this:

Exception in thread "JavaFX Application Thread" java.lang.IllegalArgumentException: Invalid format: "Thursday, January 25, 2018 at 3:50pm PST" is malformed at " 25, 2018 at 3:50pm PST"

and its pointing to this line as the source of the exception:

DateTime dt = fmt.parseDateTime(date);

I've tried massaging the pattern with no luck for many hours... can someone see what I am doing wrong?

Thank you,

Mike Sims

6 years ago