var __decorate = (this && this.__decorate) || function (decorators, target, key, desc) { var c = arguments.length, r = c < 3 ? target : desc === null ? desc = Object.getOwnPropertyDescriptor(target, key) : desc, d; if (typeof Reflect === "object" && typeof Reflect.decorate === "function") r = Reflect.decorate(decorators, target, key, desc); else for (var i = decorators.length - 1; i >= 0; i--) if (d = decorators[i]) r = (c < 3 ? d(r) : c > 3 ? d(target, key, r) : d(target, key)) || r; return c > 3 && r && Object.defineProperty(target, key, r), r; }; import { html, LitElement } from "lit"; import { property, state } from "lit/decorators.js"; export class StreamingMessageContainer extends LitElement { constructor() { super(...arguments); this.tools = []; this.isStreaming = false; this._message = null; this._pendingMessage = null; this._updateScheduled = false; this._immediateUpdate = false; } createRenderRoot() { return this; } connectedCallback() { super.connectedCallback(); this.style.display = "block"; } // Public method to update the message with batching for performance setMessage(message, immediate = false) { // Store the latest message this._pendingMessage = message; // If this is an immediate update (like clearing), apply it right away if (immediate || message === null) { this._immediateUpdate = true; this._message = message; this.requestUpdate(); // Cancel any pending updates since we're clearing this._pendingMessage = null; this._updateScheduled = false; return; } // Otherwise batch updates for performance during streaming if (!this._updateScheduled) { this._updateScheduled = true; requestAnimationFrame(async () => { // Only apply the update if we haven't been cleared if (!this._immediateUpdate && this._pendingMessage !== null) { // Deep clone the message to ensure Lit detects changes in nested properties // (like toolCall.arguments being mutated during streaming) this._message = JSON.parse(JSON.stringify(this._pendingMessage)); this.requestUpdate(); } // Reset for next batch this._pendingMessage = null; this._updateScheduled = false; this._immediateUpdate = false; }); } } render() { // Show loading indicator if loading but no message yet if (!this._message) { if (this.isStreaming) return html `
`; return html ``; // Empty until a message is set } const msg = this._message; if (msg.role === "toolResult") { // Skip standalone tool result in streaming; the stable list will render paired tool-message return html ``; } else if (msg.role === "user") { // Skip standalone tool result in streaming; the stable list will render it immediiately return html ``; } else if (msg.role === "assistant") { // Assistant message - render inline tool messages during streaming return html `
${this.isStreaming ? html `` : ""}
`; } } } __decorate([ property({ type: Array }) ], StreamingMessageContainer.prototype, "tools", void 0); __decorate([ property({ type: Boolean }) ], StreamingMessageContainer.prototype, "isStreaming", void 0); __decorate([ property({ type: Object }) ], StreamingMessageContainer.prototype, "pendingToolCalls", void 0); __decorate([ property({ type: Object }) ], StreamingMessageContainer.prototype, "toolResultsById", void 0); __decorate([ property({ attribute: false }) ], StreamingMessageContainer.prototype, "onCostClick", void 0); __decorate([ state() ], StreamingMessageContainer.prototype, "_message", void 0); // Register custom element if (!customElements.get("streaming-message-container")) { customElements.define("streaming-message-container", StreamingMessageContainer); } //# sourceMappingURL=StreamingMessageContainer.js.map