[librsvg: 3/13] Cascade the document tree from a method in Document

[Federico Mena Quintero <federico src gnome org>]

commit d42b09d18e77740c84ac89e11125f4145c8f0c6a
Author: Federico Mena Quintero <federico gnome org>
Date:   Thu Jan 23 16:20:04 2020 -0600

    Cascade the document tree from a method in Document

 rsvg_internals/src/document.rs | 18 ++++++++++++------
 1 file changed, 12 insertions(+), 6 deletions(-)
---
diff --git a/rsvg_internals/src/document.rs b/rsvg_internals/src/document.rs
index 9841a619..6bbd7cc4 100644
--- a/rsvg_internals/src/document.rs
+++ b/rsvg_internals/src/document.rs
@@ -9,7 +9,7 @@ use std::rc::Rc;
 
 use crate::allowed_url::{AllowedUrl, AllowedUrlError, Fragment};
 use crate::create_node::create_node;
-use crate::css::{cascade, Origin, Stylesheet};
+use crate::css::{self, Origin, Stylesheet};
 use crate::error::LoadingError;
 use crate::handle::LoadOptions;
 use crate::io::{self, BinaryData};
@@ -100,6 +100,10 @@ impl Document {
         assert!(node_data.get_type() == NodeType::Svg);
         node_data.get_impl::<Svg>().get_intrinsic_dimensions()
     }
+
+    pub fn cascade(&mut self) {
+        css::cascade(&mut self.tree, &self.stylesheets);
+    }
 }
 
 struct Resources {
@@ -348,18 +352,20 @@ impl DocumentBuilder {
 
         match tree {
             None => Err(LoadingError::SvgHasNoElements),
-            Some(mut root) => {
+            Some(root) => {
                 if root.borrow().get_type() == NodeType::Svg {
-                    cascade(&mut root, &stylesheets);
-
-                    Ok(Document {
+                    let mut document = Document {
                         tree: root.clone(),
                         ids,
                         externs: RefCell::new(Resources::new()),
                         images: RefCell::new(Images::new()),
                         load_options: load_options.clone(),
                         stylesheets,
-                    })
+                    };
+
+                    document.cascade();
+
+                    Ok(document)
                 } else {
                     Err(LoadingError::RootElementIsNotSvg)
                 }