xml - Changing the background color of textbox java UiBinder -

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i want change background color of textbox indicator being validated.

<ui:style>          .textboxcolor    {         background-color: #ff6eb4;   } </ui:style>

and then

if(firstname.equals(""))     {          txtfirstname.setstylename("textboxcolor");     }

this not giving expected result.

how can achieve change in color?

kind regards

if i'm not mistaken, css names declared in uibinder converted on compilation - setting style textboxcolor won't work, because there won't style name.

if add external css file (maybe more descriptive name, say... .validated), setstylename() work.


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