1 files changed, 79 insertions, 0 deletions
diff --git a/src/servo/css/apply.rs b/src/servo/css/apply.rs
new file mode 100644
index 00000000000..dbd6f8b70d7
--- /dev/null
+++ b/src/servo/css/apply.rs
@@ -0,0 +1,79 @@
+/**
+ * Applies the appropriate CSS style to nodes.
+*/
+
+use au = gfx::geometry;
+use css::styles::SpecifiedStyle;
+use dom::node::{Node, NodeTree};
+use dom::element::*;
+use layout::context::LayoutContext;
+use image::ImageHolder;
+use resource::image_cache_task::ImageCacheTask;
+use std::net::url::Url;
+
+use newcss::values::*;
+
+trait ResolveMethods<T> {
+    pure fn initial() -> T;
+}
+
+impl CSSValue<CSSBackgroundColor> : ResolveMethods<CSSBackgroundColor> {
+    pure fn initial() -> CSSBackgroundColor { return BgColorTransparent; }
+}
+
+impl CSSValue<CSSDisplay> : ResolveMethods<CSSDisplay> {
+    pure fn initial() -> CSSDisplay { return DisplayInline; }
+}
+
+impl CSSValue<BoxSizing> : ResolveMethods<BoxSizing> {
+    pure fn initial() -> BoxSizing { return BoxAuto; }
+}
+
+impl CSSValue<CSSFontSize> : ResolveMethods<CSSFontSize> {
+    pure fn initial() -> CSSFontSize { return AbsoluteSize(Medium); }
+}
+
+
+struct StyleApplicator {
+    node: Node,
+}
+
+// TODO: normalize this into a normal preorder tree traversal function
+pub fn apply_style(layout_ctx: &LayoutContext, node: Node) {
+    let applicator = StyleApplicator {
+        node: node,
+    };
+
+    applicator.apply_css_style(layout_ctx);
+}
+
+// TODO: this is misleadingly-named. It is actually trying to resolve CSS 'inherit' values.
+
+/** A wrapper around a set of functions that can be applied as a
+ * top-down traversal of layout boxes.
+ */
+fn inheritance_wrapper(layout_ctx: &LayoutContext, node : Node) {
+    let applicator = StyleApplicator {
+        node: node,
+    };
+    applicator.resolve_style(layout_ctx);
+}
+
+impl StyleApplicator {
+    fn apply_css_style(layout_ctx: &LayoutContext) {
+
+        for NodeTree.each_child(&self.node) |child| {
+            inheritance_wrapper(layout_ctx, *child)
+        }
+    }
+
+    /** 
+     * Convert the cascaded, specified style for this node into a resolved style:
+     * one which additionally resolves the values of Initial, Inherit based on 
+     * defaults and node parent style. It also converts Node attributes into 
+     * equivalent inline style declarations (TODO: where is this defined??)
+     */
+    fn resolve_style(_layout_ctx: &LayoutContext) {
+        // TODO: implement
+    }
+}