Don't wipe the nickname value when rerendering the form

Ideally Snabbdom wouldn't completely replace the input when we add the
`error` class, because that's what's causing the input value to be
cleared.

dist/converse.js

@@ -53976,7 +53976,6 @@ _converse_headless_converse_core__WEBPACK_IMPORTED_MODULE_5__["default"].plugins
 
       initialize() {
         this.initDebounced();
-        this.validation_messages = new Backbone.Model();
         this.model.messages.on('add', this.onMessageAdded, this);
         this.model.messages.on('rendered', this.scrollDown, this);
         this.model.on('change:affiliation', this.renderHeading, this);
@@ -54801,16 +54800,18 @@ _converse_headless_converse_core__WEBPACK_IMPORTED_MODULE_5__["default"].plugins
 
         /* Render a form which allows the user to choose theirnickname.
          */
-        this.validation_messages.set('nickname', message);
         this.hideChatRoomContents();
 
         if (!this.nickname_form) {
           this.nickname_form = new _converse.MUCNicknameForm({
-            'model': this.model,
-            'chatroomview': this
+            'model': new Backbone.Model(),
+            'chatroomview': this,
+            'validation_message': message
           });
           const container_el = this.el.querySelector('.chatroom-body');
           container_el.insertAdjacentElement('beforeend', this.nickname_form.el);
+        } else {
+          this.nickname_form.model.set('validation_message', message);
         }
 
         u.showElement(this.nickname_form.el);
@@ -54823,13 +54824,14 @@ _converse_headless_converse_core__WEBPACK_IMPORTED_MODULE_5__["default"].plugins
 
         if (!this.password_form) {
           this.password_form = new _converse.MUCPasswordForm({
-            'model': this.model,
-            'chatroomview': this
+            'model': new Backbone.Model(),
+            'chatroomview': this,
+            'validation_message': message
           });
           const container_el = this.el.querySelector('.chatroom-body');
           container_el.insertAdjacentElement('beforeend', this.password_form.el);
         } else {
-          this.validation_messages.set('password', message);
+          this.model.set('validation_message', message);
         }
 
         u.showElement(this.password_form.el);
@@ -55428,12 +55430,12 @@ _converse_headless_converse_core__WEBPACK_IMPORTED_MODULE_5__["default"].plugins
 
       initialize(attrs) {
         this.chatroomview = attrs.chatroomview;
-        this.chatroomview.validation_messages.on('change:password', this.render, this);
+        this.model.on('change:validation_message', this.render, this);
         this.render();
       },
 
       toHTML() {
-        const err_msg = this.chatroomview.validation_messages.get('password');
+        const err_msg = this.model.get('validation_message');
         return templates_chatroom_password_form_html__WEBPACK_IMPORTED_MODULE_19___default()({
           'jid': this.model.get('jid'),
           'heading': __('This groupchat requires a password'),
@@ -55447,8 +55449,8 @@ _converse_headless_converse_core__WEBPACK_IMPORTED_MODULE_5__["default"].plugins
       submitPassword(ev) {
         ev.preventDefault();
         const password = this.el.querySelector('input[type=password]').value;
-        this.chatroomview.join(this.model.get('nick'), password);
-        this.chatroomview.validation_messages.set('password', null);
+        this.chatroomview.join(this.chatroomview.model.get('nick'), password);
+        this.model.set('validation_message', null);
       }
 
     });
@@ -55460,18 +55462,19 @@ _converse_headless_converse_core__WEBPACK_IMPORTED_MODULE_5__["default"].plugins
 
       initialize(attrs) {
         this.chatroomview = attrs.chatroomview;
-        this.chatroomview.validation_messages.on('change:nickname', this.render, this);
+        this.model.on('change:validation_message', this.render, this);
         this.render();
       },
 
       toHTML() {
-        const err_msg = this.chatroomview.validation_messages.get('nickname');
+        const err_msg = this.model.get('validation_message');
         return templates_chatroom_nickname_form_html__WEBPACK_IMPORTED_MODULE_18___default()({
           'heading': __('Please choose your nickname'),
           'label_nickname': __('Nickname'),
           'label_join': __('Enter groupchat'),
           'error_class': err_msg ? 'error' : '',
-          'validation_message': err_msg
+          'validation_message': err_msg,
+          'nickname': this.model.get('nickname')
         });
       },
 
@@ -55485,12 +55488,13 @@ _converse_headless_converse_core__WEBPACK_IMPORTED_MODULE_5__["default"].plugins
 
         if (nick) {
           this.chatroomview.join(nick);
-          this.chatroomview.validation_messages.set({
-            'nickname': null
+          this.model.set({
+            'validation_message': null,
+            'nickname': nick
           });
         } else {
-          return this.chatroomview.validation_messages.set({
-            'nickname': __('You need to provide a nickname')
+          return this.model.set({
+            'validation_message': __('You need to provide a nickname')
           });
         }
       }
@@ -93981,7 +93985,9 @@ __p += '<!-- src/templates/chatroom_nickname_form.html -->\n<div class="chatroom
 __e(o.heading) +
 '</label>\n            <p class="validation-message">' +
 __e(o.validation_message) +
-'</p>\n            <input type="text" required="required" name="nick"\n                   class="form-control ' +
+'</p>\n            <input type="text" required="required" name="nick" value="' +
+__e(o.nickname) +
+'"\n                   class="form-control ' +
 ((__t = (o.error_class)) == null ? '' : __t) +
 '" placeholder="' +
 __e(o.label_nickname) +

src/converse-muc-views.js

@@ -534,8 +534,6 @@ converse.plugins.add('converse-muc-views', {
             initialize () {
                 this.initDebounced();
 
-                this.validation_messages = new Backbone.Model();
-
                 this.model.messages.on('add', this.onMessageAdded, this);
                 this.model.messages.on('rendered', this.scrollDown, this);
 
@@ -1293,15 +1291,17 @@ converse.plugins.add('converse-muc-views', {
             renderNicknameForm (message='') {
                 /* Render a form which allows the user to choose theirnickname.
                  */
-                this.validation_messages.set('nickname', message);
                 this.hideChatRoomContents();
                 if (!this.nickname_form) {
                     this.nickname_form = new _converse.MUCNicknameForm({
-                        'model': this.model,
-                        'chatroomview': this
+                        'model': new Backbone.Model(),
+                        'chatroomview': this,
+                        'validation_message': message
                     });
                     const container_el = this.el.querySelector('.chatroom-body');
                     container_el.insertAdjacentElement('beforeend', this.nickname_form.el);
+                } else {
+                    this.nickname_form.model.set('validation_message', message);
                 }
                 u.showElement(this.nickname_form.el);
                 this.model.save('connection_status', converse.ROOMSTATUS.NICKNAME_REQUIRED);
@@ -1311,13 +1311,14 @@ converse.plugins.add('converse-muc-views', {
                 this.hideChatRoomContents();
                 if (!this.password_form) {
                     this.password_form = new _converse.MUCPasswordForm({
-                        'model': this.model,
-                        'chatroomview': this
+                        'model': new Backbone.Model(),
+                        'chatroomview': this,
+                        'validation_message': message
                     });
                     const container_el = this.el.querySelector('.chatroom-body');
                     container_el.insertAdjacentElement('beforeend', this.password_form.el);
                 } else {
-                    this.validation_messages.set('password', message);
+                    this.model.set('validation_message', message);
                 }
                 u.showElement(this.password_form.el);
                 this.model.save('connection_status', converse.ROOMSTATUS.PASSWORD_REQUIRED);
@@ -1861,12 +1862,12 @@ converse.plugins.add('converse-muc-views', {
 
             initialize (attrs) {
                 this.chatroomview = attrs.chatroomview;
-                this.chatroomview.validation_messages.on('change:password', this.render, this);
+                this.model.on('change:validation_message', this.render, this);
                 this.render();
             },
 
             toHTML () {
-                const err_msg = this.chatroomview.validation_messages.get('password');
+                const err_msg = this.model.get('validation_message');
                 return tpl_chatroom_password_form({
                     'jid': this.model.get('jid'),
                     'heading': __('This groupchat requires a password'),
@@ -1880,8 +1881,8 @@ converse.plugins.add('converse-muc-views', {
             submitPassword (ev) {
                 ev.preventDefault();
                 const password = this.el.querySelector('input[type=password]').value;
-                this.chatroomview.join(this.model.get('nick'), password);
-                this.chatroomview.validation_messages.set('password', null);
+                this.chatroomview.join(this.chatroomview.model.get('nick'), password);
+                this.model.set('validation_message', null);
             }
         });
 
@@ -1894,18 +1895,19 @@ converse.plugins.add('converse-muc-views', {
 
             initialize (attrs) {
                 this.chatroomview = attrs.chatroomview;
-                this.chatroomview.validation_messages.on('change:nickname', this.render, this);
+                this.model.on('change:validation_message', this.render, this);
                 this.render();
             },
 
             toHTML () {
-                const err_msg = this.chatroomview.validation_messages.get('nickname');
+                const err_msg = this.model.get('validation_message');
                 return tpl_chatroom_nickname_form({
                     'heading': __('Please choose your nickname'),
                     'label_nickname': __('Nickname'),
                     'label_join': __('Enter groupchat'),
                     'error_class': err_msg ? 'error' : '',
-                    'validation_message': err_msg
+                    'validation_message': err_msg,
+                    'nickname': this.model.get('nickname')
                 });
             },
 
@@ -1918,10 +1920,13 @@ converse.plugins.add('converse-muc-views', {
                 const nick = nick_el.value;
                 if (nick) {
                     this.chatroomview.join(nick);
-                    this.chatroomview.validation_messages.set({'nickname': null});
+                    this.model.set({
+                        'validation_message': null,
+                        'nickname': nick
+                    });
                 } else {
-                    return this.chatroomview.validation_messages.set({
-                        'nickname': __('You need to provide a nickname')
+                    return this.model.set({
+                        'validation_message': __('You need to provide a nickname')
                     });
                 }
             }

src/templates/chatroom_nickname_form.html

@@ -3,7 +3,7 @@
         <fieldset class="form-group">
             <label>{{{o.heading}}}</label>
             <p class="validation-message">{{{o.validation_message}}}</p>
-            <input type="text" required="required" name="nick"
+            <input type="text" required="required" name="nick" value="{{{o.nickname}}}"
                    class="form-control {{o.error_class}}" placeholder="{{{o.label_nickname}}}"/>
         </fieldset>
         <fieldset class="form-group">