Error when trying to limit the length of a TextField

[ales]

Hi,

In my application I have some TextFields for which I want to limit the number of characters the user can type in each of them.

To do this, I tried to create my own Component which extend the GXT TextField. In my component, I override the setMaxLength method like that :

@Override
    public void setMaxLength(int maxLength) {
        super.setMaxLength(maxLength);
        super.getInputEl().setElementAttribute("maxlength", maxlength);
    } 

In my application, I call the setMaxlength() method when I create the user interface. The problem is that, when I launch my application, I have the following error message :
"java.lang.AssertionError: Method must be called after the component is rendered".

Why ?

How can I limit the size of number of characters the user can enter in my TextField ?

Thanks,

[sven]

As the exception tells you, you can only call getInputEl() after rendering the field.

[sven]

@Override
    public void setMaxLength(int maxLength) {
        super.setMaxLength(maxLength);
if(isRendered()){
        getInputEl().setElementAttribute("maxlength", maxlength);
}
    }  

 @Override
  protected void onRender(Element target, int index) {
super.onRender(target, index);
setMaxLength(getMaxLength());
}

This code is untested

[ales]

Thanks, this code works fine.

[sven]

Great, good to know.

[r4nd7263]

Works on Firefox 3.6, but not IE8

Using IE Developer Tools I see maxlegnth is set on input tag, but it lets me keep on typing.

...any idea?

[ales]

Have you tried using this line :

if(isRendered()){
      getInputEl().setElementAttribute("maxLength", maxLength);
}

instead of

if(isRendered()){
        getInputEl().setElementAttribute("maxlength", maxlength);
}

[syamlal]

Facing same issue. Not working in IE. Any working suggestions??