Why width of rich:comboBox has to be given in pixels?

[piotr.sobczyk]

I just want for my rich:comboBox to fill it's container in width. But rich:comboBox has explicitly set default width of 150px. So I'm setting width attribute of rich:comboBox tag to width="100%" but then I get some parse error:

java.lang.StringIndexOutOfBoundsException: String index out of range: -1
     at java.lang.String.substring(String.java:1937)
     at org.richfaces.renderkit.html.ComboBoxRenderer.doEncodeEnd(ComboBoxRenderer.java:234)
     at org.richfaces.renderkit.html.ComboBoxRenderer.doEncodeEnd(ComboBoxRenderer.java:587)
     at org.ajax4jsf.renderkit.RendererBase.encodeEnd(RendererBase.java:134)

So, like documentation of rich:comboBox confirms a width has to be given in pixels: 

"width" attribute customizes the size of input element with values in pixels.

But from what I see in Firebug width attibute of rich:comboBox is just translated to atribute style="width:.." of a div element surrounding generated combo box markup. So why can't someone just give width in percents like CSS syntax allows?

Is there any other straightforward way to make rich:comboBox's width fill it's container without specifying it explicitly in pixels? I don't know exactly how wide will my container be.

[piotr.sobczyk]

Really no help on tyhis one? Seems to be really basic stuff .

[ilya_shaikovsky]

in current 3.3.x markup - input size calculated according to whole size and button size. If you will try to change that px value using firebug - you  will see the problem which will appear for width in relative units. And I believe that unfortunatelly that can't be avoided in 3.3.x.