New event: `chatBoxBlurred`

CHANGES.md

@@ -13,6 +13,7 @@
 - Replace `moment` with [DayJS](https://github.com/iamkun/dayjs).
 - New API method [\_converse.api.disco.features.get](https://conversejs.org/docs/html/api/-_converse.api.disco.features.html#.get)
 - New config setting [muc_show_disconnection_status](https://conversejs.org/docs/html/configuration.html#muc-show-disconnection-status)
+- New event: `chatBoxBlurred`.
 - #1296: `embedded` view mode shows `chatbox-navback` arrow in header
 - #1465: When highlighting a roster contact, they're incorrectly shown as online
 - #1532: Converse reloads on enter pressed in the filter box

src/converse-chatview.js

@@ -415,6 +415,15 @@ converse.plugins.add('converse-chatview', {
                     }));
                 const textarea_el = this.el.querySelector('.chat-textarea');
                 textarea_el.addEventListener('focus', () => this.emitFocused());
+                textarea_el.addEventListener('blur', () => {
+                    /**
+                     * Triggered when the focus has been removed from a particular chat.
+                     * @event _converse#chatBoxBlurred
+                     * @type { _converse.ChatBoxView | _converse.ChatRoomView }
+                     * @example _converse.api.listen.on('chatBoxBlurred', view => { ... });
+                     */
+                    _converse.api.trigger('chatBoxBlurred', this);
+                });
                 this.renderToolbar();
             },