windows-alttab@samuel-ifrs: add new extension

[samuel-ifrs]

This PR adds a new extension: Windows Alt+Tab (windows-alttab@samuel-ifrs).

What it does

An Alt+Tab window switcher that shows live window thumbnails (previews), in the classic Windows style:

• Live thumbnails of every window while holding Alt and pressing Tab, each with the app icon and window title.
• Items wrap into multiple rows when there are many windows, centered on the active monitor.
• Minimized windows are dimmed.
• Middle-click a thumbnail closes that window without leaving the switcher.
• Right-click opens the standard window menu.

While enabled it sets alttab-switcher-style to windows; the previous style is restored on disable.

Checklist

• ./validate-spice windows-alttab@samuel-ifrs passes
• metadata.json has uuid, name, description; no forbidden fields; ASCII only
• info.json with author
• square icon.png, screenshot.png
• files/ contains only the UUID directory

Tested on Cinnamon 6.6 (Linux Mint).

[github-actions]

Best-practices scanner

This is a regex-based check for API usage that can pose security, performance or
maintainability issues, or that may already be provided by Cinnamon. Most findings
are advisory and do not automatically disqualify a pull request.

This check is not perfect and will not replace a normal review.

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Found 3 potential issue(s):

⚠️ WARNING

⚠️ lang_bind

windows-alttab@samuel-ifrs/files/windows-alttab@samuel-ifrs/classic_switcher_windows_style.js:185

Lang.bind(this, function (actor, event) {

Lang.bind() is deprecated. Use arrow functions (() => {}) or Function.prototype.bind() instead.

windows-alttab@samuel-ifrs/files/windows-alttab@samuel-ifrs/classic_switcher_windows_style.js:395

Lang.bind(this, this._appActivated),

Lang.bind() is deprecated. Use arrow functions (() => {}) or Function.prototype.bind() instead.

windows-alttab@samuel-ifrs/files/windows-alttab@samuel-ifrs/classic_switcher_windows_style.js:399

Lang.bind(this, this._appEntered),

Lang.bind() is deprecated. Use arrow functions (() => {}) or Function.prototype.bind() instead.

---

Automated pattern check.

[Copilot]

Pull request overview

Note

Copilot was unable to run its full agentic suite in this review.

Adds a new Cinnamon extension that replaces the default Alt+Tab switcher with a Windows-style multi-row thumbnail switcher.

Changes:

• Introduces a custom ClassicSwitcher implementation with live window previews, multi-row wrapping, and middle/right click actions.
• Adds styling, extension metadata, and root project info.
• Documents features and usage in a new README.

Reviewed changes

Copilot reviewed 6 out of 8 changed files in this pull request and generated 9 comments.

Show a summary per file

File	Description
windows-alttab@samuel-ifrs/info.json	Adds top-level project metadata for the spice/repo.
windows-alttab@samuel-ifrs/files/windows-alttab@samuel-ifrs/stylesheet.css	Adds CSS for the Windows-style switcher layout and selection styling.
windows-alttab@samuel-ifrs/files/windows-alttab@samuel-ifrs/metadata.json	Adds Cinnamon extension metadata (uuid/name/description/version).
windows-alttab@samuel-ifrs/files/windows-alttab@samuel-ifrs/extension.js	Hooks Cinnamon’s app switcher creation to use the custom switcher and toggles the global style setting.
windows-alttab@samuel-ifrs/files/windows-alttab@samuel-ifrs/classic_switcher_windows_style.js	Implements the custom switcher, window preview sizing, click handling, and row-based layout.
windows-alttab@samuel-ifrs/README.md	Documents features, usage, and behavior of the global style setting.