Make default implementation for same_home_subtree and associate_with_form

Author: canova

examples/noop-tree-builder.rs

@@ -93,7 +93,6 @@ impl TreeSink for Sink {
     fn add_attrs_if_missing(&mut self, target: usize, _attrs: Vec<Attribute>) {
         assert!(self.names.contains_key(&target), "not an element");
     }
-    fn associate_with_form(&mut self, _target: usize, _form: usize) { }
     fn remove_from_parent(&mut self, _target: usize) { }
     fn reparent_children(&mut self, _node: usize, _new_parent: usize) { }
     fn mark_script_already_started(&mut self, _node: usize) { }

examples/print-tree-actions.rs

@@ -65,10 +65,6 @@ impl TreeSink for Sink {
         x == y
     }
 
-    fn same_home_subtree(&self, _x: usize, _y: usize) -> bool {
-        true
-    }
-
     fn elem_name(&self, target: usize) -> QualName {
         self.names.get(&target).expect("not an element").clone()
     }

src/rcdom.rs

@@ -223,12 +223,6 @@ impl TreeSink for RcDom {
         new_node(Comment(text))
     }
 
-    fn same_home_subtree(&self, _x: Handle, _y: Handle) -> bool {
-        true
-    }
-
-    fn associate_with_form(&mut self, _target: Handle, _form: Handle) {}
-
     fn has_parent_node(&self, node: Handle) -> bool {
         let node = node.borrow();
         node.parent.is_some()

src/tree_builder/interface.rs

@@ -74,7 +74,9 @@ pub trait TreeSink {
 
     /// Are two handles present in the same tree
     /// https://html.spec.whatwg.org/multipage/infrastructure.html#home-subtree
-    fn same_home_subtree(&self, x: Self::Handle, y: Self::Handle) -> bool;
+    fn same_home_subtree(&self, x: Self::Handle, y: Self::Handle) -> bool {
+        true
+    }
 
     /// What is the name of this element?
     ///
@@ -132,7 +134,7 @@ pub trait TreeSink {
     fn add_attrs_if_missing(&mut self, target: Self::Handle, attrs: Vec<Attribute>);
 
     /// Associate the given form-associatable element with the form element
-    fn associate_with_form(&mut self, target: Self::Handle, form: Self::Handle);
+    fn associate_with_form(&mut self, target: Self::Handle, form: Self::Handle) {}
 
     /// Detach the given node from its parent.
     fn remove_from_parent(&mut self, target: Self::Handle);