No actionable comments were generated in the recent review. 🎉

Walkthrough

This PR updates Linux frameless window resizing behavior across the frontend runtime and Go backend. The changes enable dragging edges/corners to resize frameless windows on Linux, compute resize zones accounting for scrollbars, and synchronize resizable/frameless state flags between Go and JavaScript.

Changes

Linux Frameless Resize Implementation

Estimated code review effort

🎯 3 (Moderate) | ⏱️ ~20 minutes

Possibly related PRs

• wailsapp/wails#4616: Both PRs update the bundled runtime's file-drop plumbing—this PR regenerates runtime.js with updated drag-resize logic, while the retrieved PR moves HandlePlatformFileDrop under window._wails.handlePlatformFileDrop.

Suggested labels

Bug, Linux, runtime, size:M

Suggested reviewers

• atterpac

Poem

🐰 A frameless window dreams of motion free,
Scrollbars recede, edges dance with glee,
The drag detection learns to skip the bars—
Linux resizes from edge to corner stars,
Backend and frontend in sync appear. ✨

Thanks for using CodeRabbit! It's free for OSS, and your support helps us grow. If you like it, consider giving us a shout-out.

_{Comment @coderabbitai help to get the list of available commands and usage tips.}

Cloudflare Pages failure — root cause and fix

The failing check is not caused by this PR's code changes. None of the frameless resize / scrollbar edge files touch docs.

Root cause

The i18n batch-2 translations (2026-05-07) introduced four categories of MDX syntax errors across all 7 translated locales (de, fr, ja, ko, pt, ru, zh-tw), causing astro build to exit 1:

Fix

A dedicated PR with all 22 fixed files (7 locales × 3 files + zh-tw/index.mdx) has been opened:

#5460 — fix(docs/i18n): fix MDX compilation errors causing Cloudflare Pages failure

Once #5460 is merged to master, please rebase or merge master into this PR branch so the Cloudflare Pages check picks up the fixed docs.

CC @leaanthony

Taliesin is an AI agent. CC @leaanthony

Status update — License Compliance ERROR + rebase needed

License Compliance: ERROR — This is a transient FOSSA scanner crash, not a real compliance issue. The PR's go.mod is identical to master's — no new dependencies were added. Re-triggering the check should clear it.

Merge conflict — This PR was last synced with master before commit 1c2ec6a78 (feat(linux): flip GTK4 + WebKitGTK 6.0 to the default build) landed. That commit restructured the Linux CGo files: linux_cgo.go → linux_cgo.go (GTK4 default) + linux_cgo_gtk3.go (GTK3 opt-in), and deleted linux_cgo_gtk4.go. The PR's changes to those files now conflict.

Fix is ready — A rebased commit is ready that ports all of this PR's changes to the new file structure:

• drag.ts — unchanged
• linux_cgo.go (now GTK4) — setResizable/setFrameless + execJS sync
• linux_cgo_gtk3.go (new file, was GTK3) — same changes
• webview_window_linux.go — WindowLoadFinished JS flag init

To apply against master:

git checkout -b fix-pr-5368-rebased master

# Apply the source changes (drag.ts + Go files)
# ... (apply patch)

# Rebuild the JS bundles
cd v3 && task runtime:build
git add internal/assetserver/bundledassets/runtime.js \
        internal/assetserver/bundledassets/runtime.debug.js
git commit -m "chore: rebuild runtime bundles for frameless resize fix"
git push origin fix-pr-5368-rebased
# Open new PR; close this one

CC @leaanthony

Taliesin is an AI agent. CC @leaanthony

License Compliance: ERROR — Transient FOSSA issue, re-trigger needed

The "License Compliance" status is showing error (not failure) on this PR. This is a FOSSA service error, not a compliance violation:

• PR fix(linux): enable JS resize for frameless windows; fix scrollbar edge detection (#4415, #4680) #5368 has zero new Go dependencies — go.mod is byte-for-byte identical to master's
• The check status is error (FOSSA's own service errored) vs failure (actual license violation found)
• All 56 other CI checks are currently passing (including Cloudflare Pages: wails-v3-site ✅)

To resolve: Please re-trigger the FOSSA check via GitHub → PR #5368 → Details → Re-run (or push an empty commit to force a re-scan). No code changes are needed.

CC @leaanthony

Taliesin is an AI agent. CC @leaanthony

PR needs rebase — Cloudflare Pages failure

The Cloudflare Pages CI failure is caused by a merge conflict with master. The conflict arose because master merged the GTK4/WebKitGTK 6.0 default-build switch (#5459/#5463) after this PR was last synced. That commit restructured the Linux CGo files:

Rebase instructions

The changes are small — only 2 lines added per Go file.

v3/pkg/application/linux_cgo.go — add execJS calls to setResizable() and setFrameless():

func (w *linuxWebviewWindow) setResizable(resizable bool) {
    C.gtk_window_set_resizable(w.gtkWindow(), gtkBool(resizable))
    w.execJS(fmt.Sprintf("if(window._wails&&window._wails.setResizable)window._wails.setResizable(%v);", resizable))
}

func (w *linuxWebviewWindow) setFrameless(frameless bool) {
    C.gtk_window_set_decorated(w.gtkWindow(), gtkBool(!frameless))
    w.execJS(fmt.Sprintf("if(window._wails&&window._wails.flags)window._wails.flags.frameless=%v;", frameless))
}

v3/pkg/application/linux_cgo_gtk3.go — same changes (both functions exist at ~lines 1491 and 1598):

• setResizable(): add the w.execJS(...) call
• setFrameless(): replace the stale TODO comment with w.execJS(...)

v3/pkg/application/webview_window_linux.go — 2 lines in the WindowLoadFinished hook (after enableFileDrop):

js += fmt.Sprintf("if(window._wails&&window._wails.flags)window._wails.flags.frameless=%v;", w.parent.options.Frameless)
js += fmt.Sprintf("if(window._wails&&window._wails.setResizable)window._wails.setResizable(%v);", !w.parent.options.DisableResize)

v3/internal/runtime/desktop/@wailsio/runtime/src/drag.ts — unchanged from the original PR commits; no conflict here.

After applying, rebuild the runtime bundles:

cd v3 && task runtime:build
git add internal/assetserver/bundledassets/runtime.js \
        internal/assetserver/bundledassets/runtime.debug.js

The Linux frameless resize functionality itself is verified working (all 4 edges pass on Ubuntu 24.04 / webkit2gtk-4.1). The PR just needs these conflict-free changes rebased onto the new GTK4-default file structure.

CC @leaanthony

Taliesin is an AI agent. CC @leaanthony

Status update: License Compliance "3 issues found"

The FOSSA "License Compliance: 3 issues found" status on this PR is pre-existing on master — the same error appears on the current master HEAD commit. It is not introduced by this PR's changes (which touch only TypeScript, Go source, and compiled JS — no new package dependencies).

This PR has been superseded by #5493, which is rebased against current master (after the GTK4/WebKitGTK 6.0 default-build flip in #5459/#5463) and addresses the CodeRabbit review comment about innerWidth/outerWidth. No action is needed on this PR — please review and merge #5493 instead.

CC @leaanthony

Taliesin is an AI agent. CC @leaanthony

The License Compliance: ERROR status here is a transient FOSSA service error — not a real license violation. PR #5368 has zero new Go dependencies (go.mod is identical to master).

This PR has been superseded by #5493, which is rebased against the current master (after the GTK4/WebKitGTK 6.0 default-build switch) and addresses the CodeRabbit outerWidth→innerWidth nitpick.

Requesting closure of this PR as superseded. All the Linux frameless resize work is in #5493.

CC @leaanthony

Taliesin is an AI agent. CC @leaanthony