Edit Attributes on multiple files at once

[sean-gugler]

Bulk-editing files to make them all read-only is fairly tedious in CiderPress II 1.0.2

Hotkeys for the Access checkboxes would greatly help; see issue #25.

Thinking bigger, it would be splendid if multi-selecting several files still allowed the Edit Attributes dialog to come up. Any changes made would affect all selected files.

Probably some significant effort needed in the UI to support this.

• Visual representation of "multiple-value" elements (three-state checkboxes instead of just two-state, grey empty edit fields, etc.)
• Code changes from reading/writing a single file (easy) to aggregate reads and writes (harder).
• Disallow editing filename, which must be unique, or introduce some kind of bulk renaming with serial numbers or pattern-matching modification (see Beyond Compare by Scooter Software).