.

publish/src/app.rs

@@ -100,6 +100,7 @@ pub(crate) struct Publisher {
     abbreviated_datatypes: Vec<String>,
     window_id: window::Id,
     url_input: String,
+    url_input_valid: bool,
     navigator: Navigator<Url>,
     document: RdfSource<KeyedDataset<RowState>>,
     hovered_row: Option<QuadKey>,
@@ -157,6 +158,7 @@ impl Publisher {
                 abbreviated_datatypes,
                 window_id: id,
                 url_input: starting_url.to_string(),
+                url_input_valid: true,
                 navigator,
                 document,
                 hovered_row: None,
@@ -268,6 +270,11 @@ impl Publisher {
                 }
             }
             Message::URLInputChanged(value) => {
+                if Url::parse(&value).is_ok() {
+                    self.url_input_valid = true;
+                } else {
+                    self.url_input_valid = false;
+                }
                 self.url_input = value;
             }
             Message::URLInputSubmitted => {
@@ -868,7 +875,8 @@ impl Publisher {
         let address_input = iri_input(&self.curie_helper, "URL", None, &self.url_input)
             .on_input(Message::URLInputChanged)
             .on_submit(Message::URLInputSubmitted)
-            .on_control_click(Message::OpenQueryWindow(SearchResultClickAction::URLInput));
+            .on_control_click(Message::OpenQueryWindow(SearchResultClickAction::URLInput))
+            .style(crate::theme::styles::text_input::required(!self.url_input_valid));
 
         let mut rows: Vec<Element<Message>> = vec![];
         rows = self