robius-event-action

Robius Event and Action Patterns Skill

Best practices for event handling and action patterns in Makepad applications based on Robrix and Moly codebases.

Source codebases:

• Robrix: Matrix chat client - MessageAction, RoomsListAction, AppStateAction
• Moly: AI chat application - StoreAction, ChatAction, NavigationAction, Timer patterns

When to Use

Use this skill when:

• Implementing custom actions in Makepad
• Handling events in widgets
• Centralizing action handling in App
• Widget-to-widget communication
• Keywords: makepad action, makepad event, widget action, handle_actions, cx.widget_action

Custom Action Pattern

Defining Domain-Specific Actions

use makepad_widgets::*;

/// Actions emitted by the Message widget
#[derive(Clone, DefaultNone, Debug)]
pub enum MessageAction {
    /// User wants to react to a message
    React { details: MessageDetails, reaction: String },
    /// User wants to reply to a message
    Reply(MessageDetails),
    /// User wants to edit a message
    Edit(MessageDetails),
    /// User wants to delete a message
    Delete(MessageDetails),
    /// User requested to open context menu
    OpenContextMenu { details: MessageDetails, abs_pos: DVec2 },
    /// Required default variant
    None,
}

/// Data associated with a message action
#[derive(Clone, Debug)]
pub struct MessageDetails {
    pub room_id: OwnedRoomId,