first pass of merging in warp (doesn't build)

crates/galaxyui/src/browser.rs

@@ -0,0 +1,28 @@
+pub fn escape_html_attribute(value: &str) -> String {
+    let mut escaped = String::with_capacity(value.len());
+    for ch in value.chars() {
+        match ch {
+            '&' => escaped.push_str("&"),
+            '"' => escaped.push_str("""),
+            '\'' => escaped.push_str("'"),
+            '<' => escaped.push_str("&lt;"),
+            '>' => escaped.push_str("&gt;"),
+            _ => escaped.push(ch),
+        }
+    }
+    escaped
+}
+
+#[cfg(any(target_family = "wasm", test))]
+pub(crate) fn safe_browser_open_url(url: &str) -> Option<String> {
+    let parsed_url = url::Url::parse(url).ok()?;
+    match parsed_url.scheme() {
+        "http" | "https" | "mailto" | "warp" | "warppreview" | "warpdev" | "warplocal"
+        | "warposs" | "warpintegration" => Some(parsed_url.to_string()),
+        _ => None,
+    }
+}
+
+#[cfg(test)]
+#[path = "browser_tests.rs"]
+mod tests;