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script: Move the layout_wrapper outside of script.

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This allows us to have ensure_data() and clear_data() functions on the TElement
trait, instead of hacking around it adding methods in random traits.

This also allows us to do some further cleanup, which I'd rather do in a
followup.
This commit is contained in:
Emilio Cobos Álvarez 2017-07-15 15:44:45 +02:00
parent f9642b36bd
commit bf9369b29d
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17 changed files with 128 additions and 166 deletions
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34
components/layout/wrapper.rs
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@ -31,21 +31,13 @@
#![allow(unsafe_code)]
use atomic_refcell::{AtomicRef, AtomicRefMut};
use core::nonzero::NonZero;
use data::{LayoutData, LayoutDataFlags, StyleAndLayoutData};
use script_layout_interface::{OpaqueStyleAndLayoutData, StyleData};
use script_layout_interface::wrapper_traits::{LayoutNode, ThreadSafeLayoutElement, ThreadSafeLayoutNode};
use script_layout_interface::wrapper_traits::{ThreadSafeLayoutElement, ThreadSafeLayoutNode};
use script_layout_interface::wrapper_traits::GetLayoutData;
use style::computed_values::content::{self, ContentItem};
use style::dom::{NodeInfo, TNode};
use style::selector_parser::RestyleDamage;
pub unsafe fn drop_style_and_layout_data(data: OpaqueStyleAndLayoutData) {
let ptr: *mut StyleData = data.ptr.get();
let non_opaque: *mut StyleAndLayoutData = ptr as *mut _;
let _ = Box::from_raw(non_opaque);
}
pub trait LayoutNodeLayoutData {
/// Similar to borrow_data*, but returns the full PersistentLayoutData rather
/// than only the style::data::ElementData.
@ -81,30 +73,6 @@ impl<T: GetLayoutData> GetRawData for T {
}
}
pub trait LayoutNodeHelpers {
fn initialize_data(&self);
fn clear_data(&self);
}
impl<T: LayoutNode> LayoutNodeHelpers for T {
fn initialize_data(&self) {
if self.get_raw_data().is_none() {
let ptr: *mut StyleAndLayoutData =
Box::into_raw(Box::new(StyleAndLayoutData::new()));
let opaque = OpaqueStyleAndLayoutData {
ptr: unsafe { NonZero::new(ptr as *mut StyleData) }
};
unsafe { self.init_style_and_layout_data(opaque) };
};
}
fn clear_data(&self) {
if self.get_raw_data().is_some() {
unsafe { drop_style_and_layout_data(self.take_style_and_layout_data()) };
}
}
}
pub trait ThreadSafeLayoutNodeHelpers {
/// Returns the layout data flags for this node.
fn flags(self) -> LayoutDataFlags;