Move textarea cols/rows to the new infrastructure.

components/layout/wrapper.rs

@@ -71,7 +71,7 @@ use style::computed_values::content::ContentItem;
 use style::computed_values::{content, display, white_space};
 use selectors::matching::DeclarationBlock;
 use selectors::parser::{NamespaceConstraint, AttrSelector};
-use style::legacy::{IntegerAttribute, UnsignedIntegerAttribute};
+use style::legacy::UnsignedIntegerAttribute;
 use style::node::{TElement, TElementAttributes, TNode};
 use style::properties::{PropertyDeclaration, PropertyDeclarationBlock};
 use util::smallvec::VecLike;
@@ -656,12 +656,6 @@ impl<'le> TElementAttributes<'le> for LayoutElement<'le> {
         }
     }
 
-    fn get_integer_attribute(self, integer_attribute: IntegerAttribute) -> Option<i32> {
-        unsafe {
-            self.element.get_integer_attribute_for_layout(integer_attribute)
-        }
-    }
-
     fn get_unsigned_integer_attribute(self, attribute: UnsignedIntegerAttribute) -> Option<u32> {
         unsafe {
             self.element.get_unsigned_integer_attribute_for_layout(attribute)

components/script/dom/element.rs

@@ -59,10 +59,11 @@ use dom::virtualmethods::{VirtualMethods, vtable_for};
 
 use devtools_traits::AttrInfo;
 use style;
-use style::legacy::{UnsignedIntegerAttribute, IntegerAttribute, from_declaration};
+use style::legacy::{UnsignedIntegerAttribute, from_declaration};
 use style::properties::{PropertyDeclarationBlock, PropertyDeclaration, parse_style_attribute};
 use style::properties::DeclaredValue::SpecifiedValue;
-use style::properties::longhands::border_spacing;
+use style::properties::longhands::{self, border_spacing};
+use style::values::CSSFloat;
 use style::values::specified::{self, CSSColor};
 use util::geometry::Au;
 use util::namespace;
@@ -164,8 +165,6 @@ pub trait RawLayoutElementHelpers {
 
     unsafe fn synthesize_presentational_hints_for_legacy_attributes<V>(&self, &mut V)
         where V: VecLike<DeclarationBlock<Vec<PropertyDeclaration>>>;
-    unsafe fn get_integer_attribute_for_layout(&self, integer_attribute: IntegerAttribute)
-                                               -> Option<i32>;
     unsafe fn get_checked_state_for_layout(&self) -> bool;
     unsafe fn get_indeterminate_state_for_layout(&self) -> bool;
     unsafe fn get_unsigned_integer_attribute_for_layout(&self, attribute: UnsignedIntegerAttribute)
@@ -330,26 +329,50 @@ impl RawLayoutElementHelpers for Element {
                     PropertyDeclaration::Width(SpecifiedValue(width_value))));
             }
         }
-    }
 
-    #[inline]
-    unsafe fn get_integer_attribute_for_layout(&self, integer_attribute: IntegerAttribute)
-                                               -> Option<i32> {
-        match integer_attribute {
-            IntegerAttribute::Cols => {
-                if !self.is_htmltextareaelement() {
-                    panic!("I'm not a textarea element!")
-                }
-                let this: &HTMLTextAreaElement = mem::transmute(self);
-                Some(this.get_cols_for_layout() as i32)
+
+        let cols = if self.is_htmltextareaelement() {
+            let this: &HTMLTextAreaElement = mem::transmute(self);
+            match this.get_cols_for_layout() {
+                0 => None,
+                c => Some(c as i32),
             }
-            IntegerAttribute::Rows => {
-                if !self.is_htmltextareaelement() {
-                    panic!("I'm not a textarea element!")
-                }
-                let this: &HTMLTextAreaElement = mem::transmute(self);
-                Some(this.get_rows_for_layout() as i32)
+        } else {
+            None
+        };
+
+        if let Some(cols) = cols {
+            // TODO(mttr) ServoCharacterWidth uses the size math for <input type="text">, but
+            // the math for <textarea> is a little different since we need to take
+            // scrollbar size into consideration (but we don't have a scrollbar yet!)
+            //
+            // https://html.spec.whatwg.org/multipage/#textarea-effective-width
+            let value = specified::Length::ServoCharacterWidth(specified::CharacterWidth(cols));
+            hints.push(from_declaration(
+                PropertyDeclaration::Width(SpecifiedValue(
+                    specified::LengthOrPercentageOrAuto::Length(value)))));
+        }
+
+
+        let rows = if self.is_htmltextareaelement() {
+            let this: &HTMLTextAreaElement = mem::transmute(self);
+            match this.get_rows_for_layout() {
+                0 => None,
+                r => Some(r as i32),
             }
+        } else {
+            None
+        };
+
+        if let Some(rows) = rows {
+            // TODO(mttr) This should take scrollbar size into consideration.
+            //
+            // https://html.spec.whatwg.org/multipage/#textarea-effective-height
+            let value = specified::Length::FontRelative(specified::FontRelativeLength::Em(rows as CSSFloat));
+            hints.push(from_declaration(
+                PropertyDeclaration::Height(SpecifiedValue(
+                    longhands::height::SpecifiedValue(
+                        specified::LengthOrPercentageOrAuto::Length(value))))));
         }
     }
 

components/style/legacy.rs

@@ -10,7 +10,7 @@ use std::sync::Arc;
 use selectors::tree::{TElement, TNode};
 use selectors::matching::DeclarationBlock;
 use node::TElementAttributes;
-use values::{CSSFloat, specified};
+use values::specified;
 use properties::DeclaredValue::SpecifiedValue;
 use properties::PropertyDeclaration;
 use properties::longhands;
@@ -19,13 +19,6 @@ use selector_matching::Stylist;
 use util::geometry::Au;
 use util::smallvec::VecLike;
 
-/// Legacy presentational attributes that take an integer as defined in HTML5 § 2.4.4.2.
-#[derive(Copy, Clone, PartialEq, Eq)]
-pub enum IntegerAttribute {
-    Cols,
-    Rows,
-}
-
 /// Legacy presentational attributes that take a nonnegative integer as defined in HTML5 § 2.4.4.2.
 #[derive(Copy, Clone, PartialEq, Eq)]
 pub enum UnsignedIntegerAttribute {
@@ -96,37 +89,6 @@ impl PresentationalHintSynthesis for Stylist {
                     matching_rules_list,
                     shareable);
             }
-            name if *name == atom!("textarea") => {
-                match element.get_integer_attribute(IntegerAttribute::Cols) {
-                    Some(value) if value != 0 => {
-                        // TODO(mttr) ServoCharacterWidth uses the size math for <input type="text">, but
-                        // the math for <textarea> is a little different since we need to take
-                        // scrollbar size into consideration (but we don't have a scrollbar yet!)
-                        //
-                        // https://html.spec.whatwg.org/multipage/#textarea-effective-width
-                        let value = specified::Length::ServoCharacterWidth(specified::CharacterWidth(value));
-                        matching_rules_list.push(from_declaration(
-                                PropertyDeclaration::Width(SpecifiedValue(
-                                    specified::LengthOrPercentageOrAuto::Length(value)))));
-                        *shareable = false
-                    }
-                    Some(_) | None => {}
-                }
-                match element.get_integer_attribute(IntegerAttribute::Rows) {
-                    Some(value) if value != 0 => {
-                        // TODO(mttr) This should take scrollbar size into consideration.
-                        //
-                        // https://html.spec.whatwg.org/multipage/#textarea-effective-height
-                        let value = specified::Length::FontRelative(specified::FontRelativeLength::Em(value as CSSFloat));
-                        matching_rules_list.push(from_declaration(
-                                PropertyDeclaration::Height(SpecifiedValue(
-                                    longhands::height::SpecifiedValue(
-                                        specified::LengthOrPercentageOrAuto::Length(value))))));
-                        *shareable = false
-                    }
-                    Some(_) | None => {}
-                }
-            }
             _ => {}
         }
     }

components/style/node.rs

@@ -5,7 +5,7 @@
 //! Traits that nodes must implement. Breaks the otherwise-cyclic dependency between layout and
 //! style.
 
-use legacy::{IntegerAttribute, UnsignedIntegerAttribute};
+use legacy::UnsignedIntegerAttribute;
 use properties::PropertyDeclaration;
 use util::smallvec::VecLike;
 
@@ -16,7 +16,6 @@ use string_cache::{Atom, Namespace};
 pub trait TElementAttributes<'a> : Copy {
     fn synthesize_presentational_hints_for_legacy_attributes<V>(self, &mut V)
         where V: VecLike<DeclarationBlock<Vec<PropertyDeclaration>>>;
-    fn get_integer_attribute(self, attribute: IntegerAttribute) -> Option<i32>;
     fn get_unsigned_integer_attribute(self, attribute: UnsignedIntegerAttribute) -> Option<u32>;
 
     fn get_attr(self, namespace: &Namespace, attr: &Atom) -> Option<&'a str>;