Add stop button

internal/service/static/icons.svg

@@ -91,6 +91,10 @@
     <path d="m9 9 6 6"/>
   </symbol>
 
+  <symbol id="stop" viewBox="0 0 24 24" fill="currentColor">
+    <rect width="18" height="18" x="3" y="3" rx="2" ry="2"/>
+  </symbol>
+
   <symbol id="settings" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2" stroke-linecap="round" stroke-linejoin="round">
     <path d="M12.22 2h-.44a2 2 0 0 0-2 2v.18a2 2 0 0 1-1 1.73l-.43.25a2 2 0 0 1-2 0l-.15-.08a2 2 0 0 0-2.73.73l-.22.38a2 2 0 0 0 .73 2.73l.15.1a2 2 0 0 1 1 1.72v.51a2 2 0 0 1-1 1.74l-.15.09a2 2 0 0 0-.73 2.73l.22.38a2 2 0 0 0 2.73.73l.15-.08a2 2 0 0 1 2 0l.43.25a2 2 0 0 1 1 1.73V20a2 2 0 0 0 2 2h.44a2 2 0 0 0 2-2v-.18a2 2 0 0 1 1-1.73l.43-.25a2 2 0 0 1 2 0l.15.08a2 2 0 0 0 2.73-.73l.22-.39a2 2 0 0 0-.73-2.73l-.15-.08a2 2 0 0 1-1-1.74v-.5a2 2 0 0 1 1-1.74l.15-.09a2 2 0 0 0 .73-2.73l-.22-.38a2 2 0 0 0-2.73-.73l-.15.08a2 2 0 0 1-2 0l-.43-.25a2 2 0 0 1-1-1.73V4a2 2 0 0 0-2-2z"/>
     <circle cx="12" cy="12" r="3"/>

internal/service/static/main.css

@@ -108,6 +108,26 @@ body {
   margin-top: var(--s0);
 }
 
+.chat-loading {
+  display: flex;
+  align-items: center;
+  justify-content: center;
+  padding: var(--s1) 0;
+}
+
+.chat-loading[hidden] {
+  display: none;
+}
+
+.chat-loading__spinner {
+  width: 1rem;
+  height: 1rem;
+  border: 2px solid var(--color-gray2);
+  border-top-color: var(--color-primary);
+  border-radius: 50%;
+  animation: spin 0.8s linear infinite;
+}
+
 /* ==================== */
 /* Collapsible          */
 /* ==================== */
@@ -259,21 +279,34 @@ body {
   animation: pulse 1s ease-in-out infinite;
 }
 
-.compose__action-btn--send.loading {
+.compose__action-btn--send .compose__icon--stop {
-  position: relative;
+  display: none;
-  color: transparent;
-  pointer-events: none;
 }
 
-.compose__action-btn--send.loading::after {
+.compose__action-btn--send.loading {
-  content: "";
+  pointer-events: auto;
-  position: absolute;
+  cursor: pointer;
-  width: 0.75rem;
+}
-  height: 0.75rem;
+
-  border: 2px solid var(--color-gray2);
+/* Hide the send icon, show the stop icon during loading */
-  border-top-color: var(--color-primary);
+.compose__action-btn--send.loading .compose__icon--send {
-  border-radius: 50%;
+  display: none;
-  animation: spin 0.8s linear infinite;
+}
+
+.compose__action-btn--send.loading .compose__icon--stop {
+  display: block;
+}
+
+/* Pending stop: yellow background, click again to confirm */
+.compose__action-btn--send.loading.pending {
+  background: var(--color-yellow);
+  color: var(--color-black);
+}
+
+@media (hover: hover) {
+  .compose__action-btn--send.loading.pending:hover {
+    background: var(--color-yellow);
+  }
 }
 
 .compose__actions {

internal/service/static/main.js

@@ -29,12 +29,14 @@ class Odidere {
     this.isRecording = false;
     this.isMuted = false;
     this.isResetPending = false;
+    this.isStopPending = false;
     this.mediaRecorder = null;
 
     // DOM Elements
     this.$attach = document.getElementById('attach');
     this.$attachments = document.getElementById('attachments');
     this.$chat = document.getElementById('chat');
+    this.$chatLoading = document.getElementById('chat-loading');
     this.$fileInput = document.getElementById('file-input');
     this.$model = document.getElementById('model');
     this.$ptt = document.getElementById('ptt');
@@ -141,8 +143,9 @@ class Odidere {
     this.$textInput.addEventListener('keydown', this.#handleTextareaKeyDown);
     this.$textInput.addEventListener('input', this.#handleTextareaInput);
 
-    // Send button
+    // Send button: when loading, acts as stop button with two-press safety
-    this.$send.addEventListener('click', () => this.#submitText());
+    this.$send.addEventListener('click', () => this.#handleSendClick());
+    this.document.addEventListener('click', (e) => this.#handleStopCancel(e));
 
     // Reset button: two-press safety
     this.$reset.addEventListener('click', () => this.#handleResetClick());
@@ -356,6 +359,58 @@ class Odidere {
     this.$reset.classList.remove('footer__toolbar-btn--pending');
   }
 
+  /**
+   * #handleSendClick routes to either send or stop based on loading state.
+   */
+  #handleSendClick() {
+    if (this.$send.classList.contains('loading')) {
+      this.#handleStopClick();
+    } else {
+      this.#submitText();
+    }
+  }
+
+  /**
+   * #handleStopClick toggles the pending stop state on first press,
+   * aborts the current request on second press.
+   */
+  #handleStopClick() {
+    if (this.isStopPending) {
+      this.isStopPending = false;
+      this.$send.classList.remove('pending');
+      this.#stopConversation();
+    } else {
+      this.isStopPending = true;
+      this.$send.classList.add('pending');
+    }
+  }
+
+  /**
+   * #handleStopCancel clears the pending stop state when the user
+   * clicks anywhere outside the send button.
+   * @param {MouseEvent} event
+   */
+  #handleStopCancel(event) {
+    if (!this.isStopPending) return;
+    if (this.$send.contains(event.target)) return;
+    this.isStopPending = false;
+    this.$send.classList.remove('pending');
+  }
+
+  /**
+   * #stopConversation aborts the current streaming request and audio.
+   */
+  #stopConversation() {
+    this.#stopCurrentAudio();
+
+    if (this.currentController) {
+      this.currentController.abort();
+      this.currentController = null;
+    }
+
+    this.#setLoadingState(false);
+  }
+
   // ====================
   // AUDIO RECORDING
   // ====================
@@ -887,8 +942,17 @@ class Odidere {
   #setLoadingState(loading) {
     this.isProcessing = loading;
     this.$send.classList.toggle('loading', loading);
-    this.$send.disabled = loading;
+    this.$send.setAttribute('aria-label', loading ? 'Stop' : 'Send message');
+    // Show/hide the spinner in the chat area.
+    // Positioning is handled by #renderMessages to ensure it's always at the end.
+    this.$chatLoading.hidden = !loading;
+    // Keep the send button enabled during loading so it can act as a stop button.
     this.$ptt.disabled = loading;
+    // Clear any pending stop state when loading ends.
+    if (!loading && this.isStopPending) {
+      this.isStopPending = false;
+      this.$send.classList.remove('pending');
+    }
   }
 
   /**
@@ -1182,6 +1246,11 @@ class Odidere {
 
       this.#renderAssistantMessage(msg, msg.meta ?? meta, toolResults);
     }
+
+    // Ensure the loading spinner is always at the end of the chat.
+    if (!this.$chatLoading.hidden) {
+      this.$chat.appendChild(this.$chatLoading);
+    }
   }
 
   /**

internal/service/templates/static/footer/compose.gohtml

@@ -33,7 +33,8 @@
           id="send"
           aria-label="Send message"
         >
-          <svg class="icon"><use href="/static/icons.svg#send"></use></svg>
+          <svg class="icon compose__icon--send"><use href="/static/icons.svg#send"></use></svg>
+          <svg class="icon compose__icon--stop"><use href="/static/icons.svg#stop"></use></svg>
         </button>
       </div>
     </div>

internal/service/templates/static/main.gohtml

@@ -1,6 +1,9 @@
 {{ define "main" }}
   <main class="container">
     <section class="chat" id="chat" aria-live="polite">
+      <div class="chat-loading" id="chat-loading" hidden>
+        <div class="chat-loading__spinner"></div>
+      </div>
     </section>
     {{ template "footer" . }}
   </main>