Struct ChatState 

pub struct ChatState {
    pub messages: Vec<ChatMessage>,
    pub input: String,
    pub streaming: bool,
    /* private fields */
}

Chat state for the agent conversation.

Fields

messages: Vec<ChatMessage>

All messages in the conversation history.

input: String

The current text input from the user (not yet sent).

streaming: bool

Whether the agent is currently streaming a response.

Implementations

impl ChatState

pub fn new() -> Self

Create a new empty chat state.

pub fn handle_update(&mut self, update: SessionUpdate)

Process an incoming SessionUpdate from the agent, updating chat state accordingly.

Non-chunk updates automatically flush any accumulated agent text buffer so that the complete message is recorded before tool calls or other events.

pub fn flush_agent_message(&mut self)

Flush the agent text buffer into a completed ChatMessage::Agent message and reset streaming state.

Also extracts any fenced bash/sh code blocks and appends them as ChatMessage::CommandSuggestion entries so the UI can offer “Run in terminal” buttons.

pub fn streaming_text(&self) -> &str

Returns the current in-progress streaming text (not yet flushed).

pub fn add_user_message(&mut self, text: String)

Add a user message to the conversation.

Flushes any pending agent text first so messages stay interleaved. The message starts as pending: true (queued, not yet sent).

pub fn set_input_history(&mut self, entries: Vec<String>)

pub fn input_history_entries(&self) -> &[String]

pub fn record_user_input_history(&mut self, text: &str)

pub fn navigate_input_history_older(&mut self) -> bool

pub fn navigate_input_history_newer(&mut self) -> bool

pub fn reset_input_history_navigation(&mut self)

pub fn mark_oldest_pending_sent(&mut self)

Mark the oldest pending user message as sent (no longer cancellable).

pub fn cancel_last_pending(&mut self) -> bool

Cancel and remove the most recent pending user message.

Returns true if a message was removed.

pub fn add_system_message(&mut self, text: String)

Add a system message to the conversation.

pub fn add_command_suggestion(&mut self, command: String)

Add a command suggestion to the conversation.

pub fn add_auto_approved(&mut self, description: String)

Add an auto-approved tool call notice to the conversation.

pub fn clear(&mut self)

Clear all chat messages and reset streaming state.

pub fn build_context_replay_prompt(&self) -> Option<String>

Build a bounded transcript prompt for restoring local chat context into a newly connected ACP session.

This is best-effort: it preserves visible UI conversation context (user/agent/system/tool summaries), not the agent’s internal session state or permission request identifiers.

Trait Implementations

impl Default for ChatState

fn default() -> Self

Returns the “default value” for a type.