G4P: textField on-click Event

bbcannon

G4P: textField on-click Event

in Contributed Library Questions • 1 year ago

Hello,

I have a GTextField that works just fine, using G4P, but I would like to place the text explaining what it is for inside the textField. Then, when the user clicks in the field to type some text, I would simply remove the default text. Unfortunately, I don't see an on-click type of event. Currently, only key presses trigger an event for me.

For example, I want the textField to display 'Search' initially. Then, when the user clicks to get focus, I was hoping to catch an event so I could remove the text if it matched 'Search'. I realize you could not search for Search, but that is not an expected use case for this textField.

I know I could use a combination of isOver() and the mousePressed callbacks built into Processing to implement this, but it would be nice if G4P had a CLICKED event that triggered a call to the eventHandler.

Hopefully my questions are not too bothersome. I like G4P and maybe some of these will help make it even better.

Thanks in advance,

bbc

Replies(2)

quarks

Re: G4P: textField on-click Event

1 year ago

The GTextField class is the most complex in the library so I would have to be very careful about adding a new event to it.

It already fires 3 different types of event see this topic.

The main problem is handling focus because this component also supports copying to and pasting from the clipboard (applications and signed applets) where all or part of the text can be selected using the mouse and keyboard.

The real difficulty about adding new events to components is backward compatibility.

I will have to think about how this feature might be implemented safely but I make no promises.

bbcannon

Re: G4P: textField on-click Event

1 year ago

Thanks for considering it, and supporting your library!

I know it's not a critical feature, just thought I would throw it out there...

cheers...bbc

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