Enum MainPanelMsg 

pub enum MainPanelMsg {
    PointerEvent(PointerEvent),
    StagedChanged,
    LayoutUpdated,
    TabSelected(String),
    BeforeResize(Event),
    ContextMenu(Option<String>, f64, f64),
    CloseContextMenu,
    Command(PanelCommand),
}

Variants

PointerEvent(PointerEvent)

StagedChanged

The Workspace staged-panel set changed (staged_changed PubSub — see Workspace::stage_panel): re-render so cells/tabs/wrappers reflect it and reconcile inserts a promoted panel. Subscribed on MainPanel’s OWN scope — the root’s LayoutChanged delivery proved unreliable from element-API task contexts (promoted panels stranded in their hidden wrappers), while this component’s own messages deliver in every observed context.

LayoutUpdated

The <regular-layout> tree changed (fired by its regular-layout-update event). Used to detect panels removed from the layout (e.g. a frame’s close button) so they can be disposed.

TabSelected(String)

A tab was selected (fired by regular-layout-select, detail.name); the selected panel becomes the active panel. This is regular-layout’s own selection signal, so it resolves the correct panel within a stack.

BeforeResize(Event)

The layout is about to resize its cells (fired by the cancelable regular-layout-before-resize). Carries the event so its PresizeDetail can pre-size each panel’s plugin to its target box before the layout commits — avoiding the post-commit resize shear/clip. The handler (onbeforeresize closure) has already preventDefault()-ed it.

ContextMenu(Option<String>, f64, f64)

A right-click opened the panel context menu (target panel id, client x, y). Fired by the imperative contextmenu listener on the panel container — see _contextmenu_listener — and by each PanelTab. Some(id) activates that panel and opens its PanelMenu at the cursor; None is the EMPTY stage (zero panels) — a target-less menu offering only “New”, whose items create the first panel.

CloseContextMenu

Dismiss the panel context menu (the menu session ended).

Command(PanelCommand)

The open context menu selected a command. Maximize/Restore act on the layout here; the rest forward to on_panel_command.

Trait Implementations

impl Debug for MainPanelMsg

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.