created an attachment (id=166923)
screenshot

description:
add/edit/delete bindings in expression builder should also be disabled.

build number:
2.6.0.v20100504-0630

steps to reproduce:
1. new a data set and drag to layout.
2. create chart view for the table, define category series and value series.
3. click "data binding..." button, check the bindings.
4. open expression builder, select available column bindings->chart->edit bindings in category, check the bindings.

expected result:
add/edit/delete bindings should be disabled.

actual result:
see the screenshot. 

error log:
n/a
created an attachment (id=166924)
screenshot
fixed by disabling 'edit bindings' item in expression builder under this case and refactored design ui's api for this change.
edit binding is removed for chart view of table or crosstab.

verified on build 2.6.0 v20100513-0630.
closed.