Enum ItemTreeEvent 

pub enum ItemTreeEvent {
    Toggled(NodeId),
    Selected(NodeId, SelectionMode),
    Drag(ItemDragMsg),
}

An event emitted by crate::ItemTree::handle_key or by the view component’s mouse handlers.

The host dispatches each event back through crate::ItemTree::on_toggled or crate::ItemTree::on_selected:

fn handle(tree: &mut ItemTree<String>, ev: ItemTreeEvent) {
    match ev {
        ItemTreeEvent::Toggled(id) => tree.on_toggled(id),
        ItemTreeEvent::Selected(id, mode) => tree.on_selected(id, mode),
        ItemTreeEvent::Drag(msg) => { tree.on_drag_msg(msg); }
    }
}

Drag carries an opaque ItemDragMsg; the host routes it back through crate::ItemTree::on_drag_msg and acts on the returned crate::item_tree::ItemDragOutcome (RFC 013).

Variants

Toggled(NodeId)

Expand or collapse the node.

Selected(NodeId, SelectionMode)

Change the selection.

Drag(ItemDragMsg)

A drag-and-drop gesture (only emitted when drag-and-drop is enabled).

Trait Implementations

impl Clone for ItemTreeEvent

fn clone(&self) -> ItemTreeEvent

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for ItemTreeEvent

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

Formats the value using the given formatter.

impl PartialEq for ItemTreeEvent

fn eq(&self, other: &ItemTreeEvent) -> bool

Tests for self and other values to be equal, and is used by ==.

fn ne(&self, other: &Rhs) -> bool

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl StructuralPartialEq for ItemTreeEvent