FileInputView: Event on attachment change to hide/show microphone

js/views/conversation_view.js

@@ -151,6 +151,11 @@
       this.fileInput = new Whisper.FileInputView({
         el: this.$('.attachment-list'),
       });
+      this.listenTo(
+        this.fileInput,
+        'attachments-changed',
+        this.toggleMicrophone
+      );
 
       const getHeaderProps = () => {
         const expireTimer = this.model.get('expireTimer');

js/views/file_input_view.js

@@ -122,11 +122,13 @@
 
     onCloseAttachment(attachment) {
       this.attachments = _.without(this.attachments, attachment);
+      this.trigger('attachments-changed');
       this.render();
     },
 
     onClose() {
       this.attachments = [];
+      this.trigger('attachments-changed');
       this.render();
     },
 
@@ -267,6 +269,7 @@
 
       this.attachments.push(attachment);
       this.render();
+      this.trigger('attachments-changed');
     },
 
     async maybeAddAttachment(file) {