zellij-org/zellij · error

Invalid MouseEventType: {}

Error message

Invalid MouseEventType: {}

What it means

Error "Invalid MouseEventType: {}" thrown in zellij-org/zellij.

Source

Thrown at zellij-utils/src/ipc/protobuf_conversion.rs:4605

{
    type Error = anyhow::Error;

    fn try_from(
        event: crate::client_server_contract::client_server_contract::MouseEvent,
    ) -> Result<Self> {
        use crate::client_server_contract::client_server_contract::MouseEventType as ProtoMouseEventType;

        let event_type = match event.event_type {
            x if x == ProtoMouseEventType::Press as i32 => {
                crate::input::mouse::MouseEventType::Press
            },
            x if x == ProtoMouseEventType::Release as i32 => {
                crate::input::mouse::MouseEventType::Release
            },
            x if x == ProtoMouseEventType::Motion as i32 => {
                crate::input::mouse::MouseEventType::Motion
            },
            _ => return Err(anyhow!("Invalid MouseEventType: {}", event.event_type)),
        };

        let position = event
            .position
            .ok_or_else(|| anyhow!("MouseEvent missing position"))?
            .try_into()?;

        Ok(crate::input::mouse::MouseEvent {
            event_type,
            left: event.left,
            right: event.right,
            middle: event.middle,
            wheel_up: event.wheel_up,
            wheel_down: event.wheel_down,
            wheel_left: event.wheel_left,
            wheel_right: event.wheel_right,
            shift: event.shift,
            alt: event.alt,

View on GitHub (pinned to e839bfffa5)

Solutions

1. Validate the value against the allowed enum range before constructing the message.
2. Ensure client and server use matching protobuf definitions; regenerate bindings if versions differ.

When it happens

Trigger: Occurs when a protobuf enum value received over IPC has no matching variant; conversion rejects the unknown value.

Common situations: Typical of version skew between client and server, or a malformed/corrupted IPC message.

AI-assisted analysis of zellij-org/zellij@e839bfffa5 (2026-08-19). Data as JSON: /api/errors/93f5fed378c6c3fa. Report an issue: GitHub.