TextField Document model (original) (raw)

Mark Claassen markclaassenx at gmail.com
Thu Oct 18 11:37:35 PDT 2012

I got the source and figured it out...or at least found a problem.

The TextInputControl.Content seems to be exactly what I need. However, it is not public. Further, the instance variable is a final member in TextInputControl.

First, Content, and the default implementations, need to be public so they can be easily extended. I have feeling these were intended to be public when the time was right.

Second, there needs to be some way to plug this behavior. If it is going to remain final, then there needs to be a way to specify the Content class in the FXML. The SceneBuilder is clearly the way most UIs are supposed to be designed, so, therefore, it needs to be pretty all-encompassing.

Mark

On Wed, Oct 17, 2012 at 5:05 PM, Scott Palmer <swpalmer at gmail.com> wrote:

Using the override mechanism that Will suggested is probably easier for converting to uppercase.

final TextField allCapsTextField = new TextField() { @Override public void replaceText(int start, int end, String text) { super.replaceText(start, end, text.toUppercase()); } @Override public void replaceSelection(String text) { super.replaceSelection(text.toUppercase()); } }; or you could still use the Event Filter and handle the insertion of the characters manually if they are lowercase and then consume the event. I think that will be more work and be more error-prone though. As you mention you would have to handle pasting and drag and drop and all ugly details. Overriding seems cleaner. Perhaps you should take a look at the source code to TextInputControl. Instead of the Document they have a Content interface. Maybe you can do some of what you want by overriding getContent(). Scott On 2012-10-17, at 4:41 PM, Mark Claassen <markclaassenx at gmail.com> wrote: > Thanks for the tips. The overriding method does not seem very pluggable, > so I started with the event filter. > > I like the idea of an event filter, and I really like the how JavaFX > defined the process and the order in which items will receive events. > > So, I quickly implemented my event filter like this: > input.addEventFilter(KeyEvent. > KEYTYPED, new EventHandler() { > @Override > public void handle(KeyEvent t) { > if (input.getText().length() >=10) > t.consume(); > } > }); > > This works for typing, but, of course, I can paste whatever I wanted. > (Perhaps I need to find a second filter for that? How about DnD?) > > All input events go through the Swing Document, so with that, there was > just one method to mess with. > > Further, I currently have a Document implementation that takes user input > and converts it to upper case. (It doesn't force the user to type in an > upper case character, it just converts it if it is not.) Since, in the > case of a Document, I can control exactly what the data is, this is pretty > straightforward. How is that accomplished here? Consume the event, and > then first a new modified copy of the original. Or do I need to start > overriding various methods? > > > On Wed, Oct 17, 2012 at 4:40 PM, Mark Claassen <markclaassenx at gmail.com_ _>wrote: > >> Thanks for the tips. The overriding method does not seem very pluggable, >> so I started with the event filter. >> >> I like the idea of an event filter, and I really like the how JavaFX >> defined the process and the order in which items will receive events. >> >> So, I quickly implemented my event filter like this: >> input.addEventFilter(KeyEvent.KEYTYPED, new >> EventHandler() { >> @Override >> public void handle(KeyEvent t) { >> if (input.getText().length() >=10) >> t.consume(); >> } >> }); >> >> This works for typing, but, of course, I can paste whatever I wanted. >> (Perhaps I need to find a second filter for that? How about DnD?) >> >> All input events go through the Swing Document, so with that, there was >> just one method to mess with. >> >> Further, I currently have a Document implementation that takes user input >> and converts it to upper case. (It doesn't force the user to type in an >> upper case character, it just converts it if it is not.) Since, in the >> case of a Document, I can control exactly what the data is, this is pretty >> straightforward. How is that accomplished here? Consume the event, and >> then first a new modified copy of the original. Or do I need to start >> overriding various methods? >> >> Mark >> >> >> >> >> >> >> On Wed, Oct 17, 2012 at 2:13 PM, Will Hoover <java.whoover at gmail.com_ _>wrote: >> >>> Have you tried: >>> >>> final TextField tf = new TextField() { >>> final String restictTo = "[A-Z\s]*"; >>> @Override >>> public void replaceText(int start, int end, String text) { >>> if (matchTest(text)) { >>> super.replaceText(start, end, text); >>> } >>> } >>> @Override >>> public void replaceSelection(String text) { >>> if (matchTest(text)) { >>> super.replaceSelection(text); >>> } >>> } >>> private boolean matchTest(String text) { >>> return text.isEmpty() || text.matches(restictTo); >>> } >>> }; >>> >>> -----Original Message----- >>> From: openjfx-dev-bounces at openjdk.java.net >>> [mailto:openjfx-dev-bounces at openjdk.java.net] On Behalf Of Mark Claassen >>> Sent: Wednesday, October 17, 2012 1:08 PM >>> To: openjfx-dev at openjdk.java.net >>> Subject: TextField Document model >>> >>> JTextComponents (like JTextField) has a javax.swing.text.Document model >>> that >>> made it pretty easy to create a text field that only allowed a certain >>> number of characters in it. Similarly, it was also easy to make a >>> Document >>> model that took all input, but forced characters to upper case. >>> >>> @Override >>> public void insertString(int offs, String str, AttributeSet a) throws >>> BadLocationException { >>> >>> } >>> >>> What is there going to be in JavaFX to accomplish the same goals? >>> >>> Mark >>> >>> >>

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