Submit on enter

src/panels/developer-tools/assist/developer-tools-assist.ts

@@ -51,6 +51,14 @@ class HaPanelDevAssist extends SubscribeMixin(LitElement) {
     this._language = ev.detail.value;
   }
 
+  private _handleKeyDown(e: KeyboardEvent) {
+    if (e.code !== "Enter" || e.shiftKey) {
+      return;
+    }
+    e.preventDefault();
+    this._parse();
+  }
+
   private _textAreaInput(ev) {
     const value = ev.target.value;
     const valid = Boolean(value);
@@ -90,6 +98,15 @@ class HaPanelDevAssist extends SubscribeMixin(LitElement) {
       assistAgent?.supported_languages === "*"
         ? undefined
         : assistAgent?.supported_languages;
+
+    if (
+      !this._language &&
+      this.supportedLanguages?.includes(this.hass.locale.language)
+    ) {
+      this._language = this.hass.locale.language;
+    } else if (!this._language) {
+      this._language = "en";
+    }
   }
 
   protected firstUpdated(): void {
@@ -111,7 +128,7 @@ class HaPanelDevAssist extends SubscribeMixin(LitElement) {
                   <ha-language-picker
                     .languages=${this.supportedLanguages}
                     .hass=${this.hass}
-                    .value=${this._language ?? "en"}
+                    .value=${this._language}
                     @value-changed=${this._languageChanged}
                   ></ha-language-picker>
                 `
@@ -121,6 +138,7 @@ class HaPanelDevAssist extends SubscribeMixin(LitElement) {
               label="Sentences"
               id="sentences-input"
               @input=${this._textAreaInput}
+              @keydown=${this._handleKeyDown}
             ></ha-textarea>
           </div>
           <div class="card-actions">