Published and unpublished along with remove option

Hi all,

After creating and installing component one thing I am trying to do in admin listing given as follows:
1. A preview image will show in listing page ,on clicking it respective content will be displayed in next tab.
2. How to make published and unpublished in published list.
3. On clicking "Remove" the entire row will be deleted giving "are you sure" warning.

Please find the image attached herewith.

Thanks,
Subrata

Hi all,
Partially I solved the issue like "remove" . We don't have to do anything because joomla has the facility to remove/delete. "Publish/Unpublish" option if in the db field toggle is declared automatically will do the same. Only one problem is left ie "Preview" option.

Thanks,
Subrata