make TUI widgets cross framework

packages/native-core/src/node_watcher.rs

@@ -1,17 +1,19 @@
 //! Helpers for watching for changes in the DOM tree.
 
-use crate::{node::FromAnyValue, prelude::*};
+use crate::{node::FromAnyValue, node_ref::AttributeMask, prelude::*};
 
 /// A trait for watching for changes in the DOM tree.
 pub trait NodeWatcher<V: FromAnyValue + Send + Sync> {
     /// Called after a node is added to the tree.
-    fn on_node_added(&self, _node: NodeMut<V>) {}
+    fn on_node_added(&mut self, _node: NodeMut<V>) {}
     /// Called before a node is removed from the tree.
-    fn on_node_removed(&self, _node: NodeMut<V>) {}
+    fn on_node_removed(&mut self, _node: NodeMut<V>) {}
     /// Called after a node is moved to a new parent.
-    fn on_node_moved(&self, _node: NodeMut<V>) {}
-    // /// Called after the text content of a node is changed.
-    // fn on_text_changed(&self, _node: NodeMut<V>) {}
-    // /// Called after an attribute of an element is changed.
-    // fn on_attribute_changed(&self, _node: NodeMut<V>, attribute: &str) {}
+    fn on_node_moved(&mut self, _node: NodeMut<V>) {}
+}
+
+/// A trait for watching for changes to attributes of an element.
+pub trait AttributeWatcher<V: FromAnyValue + Send + Sync> {
+    /// Called before update_state is called on the RealDom
+    fn on_attributes_changed(&self, _node: NodeMut<V>, _attributes: &AttributeMask) {}
 }