Preset placeholder: clipping in clipping

[aecreations]

New built-in (preset) placeholder, $[CLIPPING(clipping)], for inserting a clipping into a clipping. The argument to the placeholder name is the name of the clipping to insert.

Referencing the clipping by its name, e.g. $[CLIPPING(Reply to customer inquiry)], may be the most user friendly approach, except that clipping names can be long, and there could be more than one clipping with the same name. As for IndexedDB database lookups, the name field in the clippings data store is already being indexed, so there's no concern about performance.

If there are more than one clipping by that name, then the first clipping that is found via the IndexedDB lookup is used. If a clipping by that name doesn't exist, then the placeholder should be inserted as is.

Recursion won't be supported - i.e., a clipping contains a placeholder for inserting a clipping, which itself contains a placeholder for inserting another clipping, and so on. The clipping referenced by this placeholder should only be processed once. But any placeholders that exist in the inserted clipping will be processed along with any other placeholders in the containing clipping.

When processing placeholders, clipping in clipping placeholders should be processed first before any other presets and custom placeholders.

Clippings Manager UI:

• New menu item in the Presets menu on the placeholder toolbar: Clipping In Clipping. This should open a dialog, where user can search for clipping by name and pick from an auto-complete listbox.
• Possibility of introducing a "selection" mode where user can pick the clipping from the tree list in Clippings Manager. This may be considered in a future release.

[aecreations]

If a clipping is renamed, it would invalidate all its references in clipping-in-clipping placeholders, and it would be an annoyance for the user to have to hunt for all the clippings and fix them.

Consider adding ability to scan for clippings that references the renamed clipping and ask the user if they want to update them. This should happen when a clipping is renamed and the clipping is referenced in other clippings via the $[CLIPPING(...)] placeholder.

Alternatively, the automatic scan-and-fix could happen automatically, and could be turned on or off via a pref.

[aecreations]

Clippings Manager UI:

• New menu item in the Presets menu on the placeholder toolbar: Clipping In Clipping. ~This should open a dialog, where user can search for clipping by name and pick from an auto-complete listbox.~ This should insert a placeholder at the cursor position in the clipping content editor: $[CLIPPING(Name of clipping to insert)].
• Bonus: The placeholder argument Name of clipping to insert should be highlighted.

[aecreations]

When pasting a clipping containing a clipping-in-clipping placeholder, keep track of those that couldn't be expanded because the clipping references are invalid. Then show a popup window to the user listing the placeholders that couldn't be expanded, and give the option to open Clippings Manager, proceed with pasting the clipping, or cancel.

Future enhancement: Check Clipping In Clipping Placeholders - a Clippings Manager utility which processes all clippings for clipping-in-clipping placeholders, checking that their references are still valid.

[aecreations]

UI string: Name of clipping to insert Description in messages.json: Default argument for the clipping-in-clipping placeholder - appears as $[CLIPPING(Name of clipping to insert)]