all: can render basic things

src/dom.rs

@@ -3,10 +3,12 @@ use std;
 
 use css;
 
+#[derive(Clone)]
 pub struct Attr {
   attrs: HashMap<String, String>,
 }
 
+#[derive(Clone)]
 pub struct EData {
     pub name: String,
     pub attr: Attr,
@@ -25,11 +27,13 @@ impl EData {
     }
 }
 
+#[derive(Clone)]
 pub struct SData {
     attr: Attr,
     content: css::Stylesheet,
 }
 
+#[derive(Clone)]
 pub enum NType {
     Text(String),
     Comment(String),
@@ -37,6 +41,7 @@ pub enum NType {
     Stylesheet(SData)
 }
 
+#[derive(Clone)]
 pub struct Node {
     pub children: Vec<Node>,
     pub ntype: NType,
@@ -101,3 +106,39 @@ impl std::fmt::Display for Attr {
           return Result::Ok(())
     }
 }
+
+
+pub fn find_node(name: String, node: &Node) -> Option<Node> {
+    match node.ntype {
+        NType::Text(_) | NType::Comment(_) => None,
+        NType::Element(ref d) => {
+            if d.name == name {
+                return Some(node.clone());
+            }
+            for ref child in &node.children {
+                if let Some(n) = find_node(name.clone(), child) {
+                    return Some(n);
+                }
+            }
+            return None;
+        },
+        NType::Stylesheet(_) =>
+            if name == "style" {
+                return Some(node.clone());
+            } else {
+                return None;
+            }
+    }
+}
+
+pub fn find_style(node: &Node) -> Option<css::Stylesheet> {
+    match find_node("style".to_string(), node) {
+        Some(n) => {
+            match n.ntype {
+                NType::Stylesheet(d) => Some(d.content),
+                _ => None
+            }
+        }
+        _ => None
+    }
+}