Supernote Select All

Select All is a small Supernote plugin that selects every element on the current NOTE page with one toolbar button.

It uses the current sn-plugin-lib PluginCommAPI.lassoElements(rect) API, so it does not require the user to draw a starter lasso first.

What It Does

• Adds a Select All button to the NOTE toolbar.
• Reads the current file path, page number, and page size.
• Builds a full-page rectangle in pixel coordinates.
• Calls PluginCommAPI.lassoElements(rect) to create a normal Supernote lasso selection around page content.
• Leaves the note file unchanged.

What It Does Not Do

• It does not delete, move, export, or rewrite elements.
• It does not select content across pages.
• It does not support DOC files yet.

Build

npm install
npm run typecheck
npm run build:plugin

The package is written to:

build/outputs/supernote_select_all.snplg

Copy the .snplg file to MyStyle/ on the Supernote, then install it from Settings -> Apps -> Plugins.

Implementation Notes

The core path is in index.js:

const rect = {
  left: 0,
  top: 0,
  right: pageSize.width,
  bottom: pageSize.height,
};

await PluginCommAPI.lassoElements(rect);

Supernote SDK details are tracked in playbook/ENGINEERING.md.