From af78173243a621e1da74ae0553222614c2338b91 Mon Sep 17 00:00:00 2001
From: Eli Friedman <eli.friedman@gmail.com>
Date: Sun, 8 Nov 2015 00:30:34 -0800
Subject: [PATCH] Move more unsafe layout calls onto LayoutJS.

---
 components/script/dom/element.rs          | 10 +++---
 components/script/dom/htmltableelement.rs | 42 +++++++++++++++++------
 2 files changed, 37 insertions(+), 15 deletions(-)

diff --git a/components/script/dom/element.rs b/components/script/dom/element.rs
index 4377ca82026e..9c625dde32ed 100644
--- a/components/script/dom/element.rs
+++ b/components/script/dom/element.rs
@@ -47,7 +47,7 @@ use dom::htmllabelelement::HTMLLabelElement;
 use dom::htmllegendelement::HTMLLegendElement;
 use dom::htmloptgroupelement::HTMLOptGroupElement;
 use dom::htmltablecellelement::{HTMLTableCellElement, HTMLTableCellElementLayoutHelpers};
-use dom::htmltableelement::HTMLTableElement;
+use dom::htmltableelement::{HTMLTableElement, HTMLTableElementLayoutHelpers};
 use dom::htmltablerowelement::HTMLTableRowElement;
 use dom::htmltablesectionelement::HTMLTableSectionElement;
 use dom::htmltemplateelement::HTMLTemplateElement;
@@ -276,7 +276,7 @@ impl LayoutElementHelpers for LayoutJS<Element> {
         let bgcolor = if let Some(this) = self.downcast::<HTMLBodyElement>() {
             this.get_background_color()
         } else if let Some(this) = self.downcast::<HTMLTableElement>() {
-            (*this.unsafe_get()).get_background_color()
+            this.get_background_color()
         } else if let Some(this) = self.downcast::<HTMLTableCellElement>() {
             this.get_background_color()
         } else if let Some(this) = self.downcast::<HTMLTableRowElement>() {
@@ -355,7 +355,7 @@ impl LayoutElementHelpers for LayoutJS<Element> {
         }
 
         let cellspacing = if let Some(this) = self.downcast::<HTMLTableElement>() {
-            (*this.unsafe_get()).get_cellspacing()
+            this.get_cellspacing()
         } else {
             None
         };
@@ -400,7 +400,7 @@ impl LayoutElementHelpers for LayoutJS<Element> {
         let width = if let Some(this) = self.downcast::<HTMLIFrameElement>() {
             this.get_width()
         } else if let Some(this) = self.downcast::<HTMLTableElement>() {
-            (*this.unsafe_get()).get_width()
+            this.get_width()
         } else if let Some(this) = self.downcast::<HTMLTableCellElement>() {
             this.get_width()
         } else {
@@ -490,7 +490,7 @@ impl LayoutElementHelpers for LayoutJS<Element> {
 
 
         let border = if let Some(this) = self.downcast::<HTMLTableElement>() {
-            (*this.unsafe_get()).get_border()
+            this.get_border()
         } else {
             None
         };
diff --git a/components/script/dom/htmltableelement.rs b/components/script/dom/htmltableelement.rs
index 259104ae09c2..548cf240b9b3 100644
--- a/components/script/dom/htmltableelement.rs
+++ b/components/script/dom/htmltableelement.rs
@@ -8,7 +8,7 @@ use dom::bindings::codegen::Bindings::HTMLTableElementBinding;
 use dom::bindings::codegen::Bindings::HTMLTableElementBinding::HTMLTableElementMethods;
 use dom::bindings::codegen::Bindings::NodeBinding::NodeMethods;
 use dom::bindings::inheritance::Castable;
-use dom::bindings::js::{Root, RootedReference};
+use dom::bindings::js::{LayoutJS, Root, RootedReference};
 use dom::document::Document;
 use dom::element::{AttributeMutation, Element};
 use dom::htmlelement::HTMLElement;
@@ -47,6 +47,10 @@ impl HTMLTableElement {
         let element = HTMLTableElement::new_inherited(localName, prefix, document);
         Node::reflect_node(box element, document, HTMLTableElementBinding::Wrap)
     }
+
+    pub fn get_border(&self) -> Option<u32> {
+        self.border.get()
+    }
 }
 
 impl HTMLTableElementMethods for HTMLTableElement {
@@ -115,22 +119,40 @@ impl HTMLTableElementMethods for HTMLTableElement {
     make_setter!(SetBgColor, "bgcolor");
 }
 
+pub trait HTMLTableElementLayoutHelpers {
+    fn get_background_color(&self) -> Option<RGBA>;
+    fn get_border(&self) -> Option<u32>;
+    fn get_cellspacing(&self) -> Option<u32>;
+    fn get_width(&self) -> LengthOrPercentageOrAuto;
+}
 
-impl HTMLTableElement {
-    pub fn get_background_color(&self) -> Option<RGBA> {
-        self.background_color.get()
+impl HTMLTableElementLayoutHelpers for LayoutJS<HTMLTableElement> {
+    #[allow(unsafe_code)]
+    fn get_background_color(&self) -> Option<RGBA> {
+        unsafe {
+            (*self.unsafe_get()).background_color.get()
+        }
     }
 
-    pub fn get_border(&self) -> Option<u32> {
-        self.border.get()
+    #[allow(unsafe_code)]
+    fn get_border(&self) -> Option<u32> {
+        unsafe {
+            (*self.unsafe_get()).border.get()
+        }
     }
 
-    pub fn get_cellspacing(&self) -> Option<u32> {
-        self.cellspacing.get()
+    #[allow(unsafe_code)]
+    fn get_cellspacing(&self) -> Option<u32> {
+        unsafe {
+            (*self.unsafe_get()).cellspacing.get()
+        }
     }
 
-    pub fn get_width(&self) -> LengthOrPercentageOrAuto {
-        self.width.get()
+    #[allow(unsafe_code)]
+    fn get_width(&self) -> LengthOrPercentageOrAuto {
+        unsafe {
+            (*self.unsafe_get()).width.get()
+        }
     }
 }