[FIX] mail: chatter: hide basic composer when opening full composer

opw 670388

addons/mail/static/src/js/chatter.js

@@ -673,7 +673,7 @@ var ChatterComposer = composer.BasicComposer.extend({
                     var parent = self.getParent();
                     chat_manager.get_messages({model: parent.model, res_id: parent.res_id});
                 },
-            });
+            }).then(self.trigger.bind(self, 'close_composer'));
         });
     }
 });
@@ -914,12 +914,14 @@ var Chatter = form_common.AbstractField.extend({
             }
             self.composer.on('post_message', self, self.on_post_message);
             self.composer.on('need_refresh', self, self.refresh_followers);
+            self.composer.on('close_composer', null, self.close_composer.bind(self, true));
         });
         this.mute_new_message_button(true);
     },
-    close_composer: function () {
-        if (this.composer.is_empty()) {
+    close_composer: function (force) {
+        if (this.composer.is_empty() || force) {
             this.composer.do_hide();
+            this.composer.$input.val('');
             this.mute_new_message_button(false);
         }
     },