Setting max length on TextField

[icfantv]

Is there really no way to set the max length on a text field? I know I can use a max length validator but that doesn't prevent the user from entering more characters than is "allowed."

There was a setMaxLength(...) in 2.x on the TextField object. Why was it pulled in favor of a validator?

[PhiLho]

An obvious solution would be to set the maxlength attribute on the underlying input element, but I wasn't sure how to do it.
I found a solution in a blog post:
http://www.selikoff.net/2011/04/26/g...tfield-in-gxt/

[icfantv]

Yes, that is an obvious solution indeed. :-) How to actually get to the DOM element is the tricky part.

Thanks for that post. The solution I thought of (but was dreading) was something we had to do back in my Java Swing days which was to add a key up listener to the field and when the limit was hit, stop allowing input. But it's annoying because you still have to allow for the backspace and delete keys.

I will use your posted solution. Thanks again.

[icfantv]

Just getting back to this.

In case anyone sees this in the future, here's what I've come up with - not sure if it's the "right" way, but it passes the smell test to me:

public class BoundedTextField extends TextField {


public BoundedTextField() {
this(100);
}


public BoundedTextField(int maxLength) {


super();
if (maxLength <= 0) {
throw new IllegalArgumentException("the max length must be positive: " + maxLength);
}


this.maxLength = maxLength;
this.addValidator();
}


@Override
public void onAfterFirstAttach() {


XElement element = this.getInputEl();
element.setAttribute("maxlength", Integer.toString(this.maxLength));
}


private void addValidator() {
this.addValidator(new MaxLengthValidator(this.maxLength));
}


private final int maxLength;
}

[dardison]

Hi,

I would like to know what Sencha Team have to say about the issue.
Anyone?

[SelzChi]

Hi,

any news regarding this issue?

Thanks,

Selcuk