Fixed size of the content area (below the search bar).

Optional filter widget placed next to the search bar (e.g. a settings button).

Whether the user is currently searching.

For subclasses that have a text input inside the panel (e.g. a name field) - set to true to prevent Left arrow key from popping the panel.

Called to (re)build the item tree. Receives Editor.AdvancedDropdownWidget.RootItem after it has been cleared.

Called after selection to allow the host to close/cleanup.

Called when a leaf item is selected. Receives the item's Editor.AdvancedDropdownItem.Value.

The root of the item tree. Populated by Editor.AdvancedDropdownWidget.OnBuildItems or set directly.

Title shown in the root panel header.

Placeholder text shown in the search bar.

Optional custom search scorer. Receives an item and the search words, returns a score (0 = no match). If null, the default scorer matches against Title and Description.

Build a panel's content from the item tree. Override to customize.

Called after search results are populated. Override to add extra entries (e.g. "New Component" button).

Pop the current panel (navigate back).

Push a new panel onto the stack (navigate deeper into a category).

Rebuild the item tree and reset to the root panel.