Enum ProgressEvent 

pub enum ProgressEvent {
    Output(String),
    Status(String),
    Bytes {
        done: u64,
        total: Option<u64>,
    },
    Artifact {
        mime: String,
        data: Vec<u8>,
        caption: Option<String>,
    },
    SubagentToolCall {
        child_call_id: ToolCallId,
        tool_name: String,
        phase: SubagentPhase,
    },
    SubagentText(String),
}

Tool-side progress event. The reducer already knows ToolStarted and ToolFinished; this carries everything in between (streaming subprocess output, long-running download status, multimodal artifacts like inline screenshots, and nested activity from subagents).

Variants

Output(String)

Partial stdout/stderr chunk.

Status(String)

Arbitrary status string for display.

Bytes

Byte-count progress for long downloads/transfers. total is None when the producer doesn’t know the final size.

Fields

done: u64

total: Option<u64>

Artifact

Binary artifact produced mid-execution (screenshot preview, generated file, etc.). MIME string determines routing in the reducer — image/* attaches inline to the active assistant message; anything else lands on the status line as a label.

Fields

mime: String

data: Vec<u8>

caption: Option<String>

SubagentToolCall

A child subagent just started or finished a tool call. Carries the CHILD’s call identity + tool name + phase so the parent UI can surface it without needing to recurse into the child’s event vocabulary.

Fields

child_call_id: ToolCallId

tool_name: String

phase: SubagentPhase

SubagentText(String)

A chunk of assistant text produced by a child subagent. Mostly UI flavor — lets the parent status line show what the sub is “saying” in real time.

Trait Implementations

impl Clone for ProgressEvent

fn clone(&self) -> ProgressEvent

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for ProgressEvent

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

Formats the value using the given formatter.