# `GSEditCustomFilterWindowDelegate`

*Protocol*

## Declaration

```swift
protocol GSEditCustomFilterWindowDelegate
```

```objc
@protocol GSEditCustomFilterWindowDelegate
```

```python
GSEditCustomFilterWindowDelegate
```

## Topics

### Instance Methods

- [`GSEditCustomFilterWindowDelegate didAddNewSidebarItem:`](/Core/GlyphsApp/GSEditCustomFilterWindowDelegate/didAddNewSidebarItem:)
- [`GSEditCustomFilterWindowDelegate didChangeSidebarItem:`](/Core/GlyphsApp/GSEditCustomFilterWindowDelegate/didChangeSidebarItem:)
- [`GSEditCustomFilterWindowDelegate fontScripts`](/Core/GlyphsApp/GSEditCustomFilterWindowDelegate/fontScripts)