Jewel Swing Interop

Use this skill when the task touches Jewel, Swing-hosted Compose, IntelliJ tool windows, or popup behavior.

Highest-Level API First

Prefer the simplest valid integration point:

1. ToolWindow.addComposeTab(...) for IntelliJ tool windows
2. JewelComposePanel(...) or equivalent bridge wrappers for generic Swing hosting
3. lower-level ComposePanel wiring only when higher-level bridge APIs do not fit

Theme And Hosting Rules

• In IntelliJ plugin contexts, prefer SwingBridgeTheme.
• Avoid unmanaged extra ComposePanel wrappers when a bridge utility already exists.
• Reach for LocalComponent when you need the host Swing component in Compose.

Popup Caveats That Matter For Spectre

• JewelFlags.useCustomPopupRenderer defaults to false.
• When custom popup rendering is disabled, Jewel falls back to normal Compose popup behavior.
• Compose Desktop defaults compose.layers.type to OnSameCanvas.
• Because of that, popup discovery cannot assume every popup creates its own AWT window.

Always consider all of these when investigating popup semantics, hit-testing, or window discovery:

1. same-window extra semantics roots
2. Swing-hosted ComposePanel layers
3. real owned windows such as JDialog / JBPopup

Synthetic Key Dispatch Guidance

• Compose Desktop key listeners usually live on the inner Skiko canvas (SkiaLayer / SkiaSwingLayer), not on the outer ComposePanel / ComposeWindowPanel wrapper.
• When debugging synthetic typing in Jewel or Swing-hosted Compose, do not assume Window.focusOwner is available. macOS apple.awt.UIElement=true helper JVMs can keep every AWT window unfocused while Compose's internal focus model still has a focused TextField.
• Spectre's synthetic driver should therefore target the key-listening descendant under the pointer target or Compose host and use KeyboardFocusManager.redispatchEvent, not plain Component.dispatchEvent, for key events generated outside the OS keyboard path.

Coordinate And Interop Guidance

• Be careful when moving between Compose coordinates and AWT screen coordinates.
• Prefer established prior art from IntelliJ remote-driver and Compose Desktop internals over ad-hoc math.
• When a conversion seems obvious, verify it against existing host code before locking it in.

Local References

Read these checked-out sources when implementing:

1. /Users/rock3r/src/intellij-community/platform/jewel/ide-laf-bridge/src/main/kotlin/org/jetbrains/jewel/bridge/ToolWindowExtensions.kt
2. /Users/rock3r/src/intellij-community/platform/jewel/ide-laf-bridge/src/main/kotlin/org/jetbrains/jewel/bridge/JewelComposePanelWrapper.kt
3. /Users/rock3r/src/intellij-community/platform/jewel/ide-laf-bridge/src/main/kotlin/org/jetbrains/jewel/bridge/theme/SwingBridgeTheme.kt
4. /Users/rock3r/src/intellij-community/platform/jewel/ui/src/main/kotlin/org/jetbrains/jewel/ui/component/Popup.kt
5. /Users/rock3r/src/intellij-community/platform/jewel/foundation/src/main/kotlin/org/jetbrains/jewel/foundation/JewelFlags.kt
6. /Users/rock3r/src/intellij-community/plugins/performanceTesting/remote-driver.compose/src/com/intellij/performanceTesting/remoteDriver/compose/ComposeXpathDataModelExtension.kt