Inlay

A small templating text editor built on AvaloniaEdit/AvaloniaUI. Inline templates hold a list of choices and show one selected value. Click a template object to edit its choices.

Built as a demo of my prior work with C# and AvaloniaUI.

Test it

dotnet run --project Inlay.csproj

Or launch through VSCode.

Architecture

The application follows MVVM, and implements with AvaloniaUI, ReactiveUI, and a customized templating extension built on top of AvaloniaEdit.

Document format

Files use JSON. Text and templates are stored as ordered parts, so template locations do not depend on character offsets.

{
  "formatVersion": 1,
  "lineLength": {
    "show": false,
    "enforce": false,
    "softLimit": 80,
    "hardLimit": 120
  },
  "content": [
    { "type": "text", "text": "Hello " },
    {
      "type": "template",
      "options": ["Ada", "Grace"],
      "selectedIndex": 0
    },
    { "type": "text", "text": "!" }
  ]
}

selectedIndex is -1 when the template has no active choice. The editor displays _____ in that case. Choices cannot be empty strings.

lineLength is per document and optional, defaulting to the values above. show draws the limit columns and enforce wraps the text at hardLimit. Both limits run from 1 to 500, and hardLimit cannot be below softLimit.

License

Inlay is licensed under the GNU General Public License v3.0 or later. See LICENSE for details.