created an attachment (id=168326)
screenshot

description:
data binding is disabled in chart builder but enabled in edit data binding in expression builder when inherit columns and groups.

build number:
2.6.0.v20100513-1121

steps to reproduce:
1. new a table binding to the data set.
2. add a chart in the table footer, select inherit columns and groups.
3. check "data binding..." button, it is disabled.
4. open expression builder, select available column bindings->chart->edit
bindings in category, check the bindings.

expected result:
the operation on data binding should be consistent.

actual result:
"edit bindings" should be removed in expression builder (see the screenshot).

error log:
n/a
please check if expression builder provider is flexible enough to customize.
