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Use or_init for HTMLCanvasElement::GetContext.

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This commit is contained in:
Ms2ger 2014-12-31 14:49:25 +01:00
parent 0da57abec6
commit 2669dac312
1 changed files with 4 additions and 6 deletions
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10
components/script/dom/htmlcanvaselement.rs
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@ -9,7 +9,7 @@ use dom::bindings::codegen::Bindings::HTMLCanvasElementBinding::HTMLCanvasElemen
use dom::bindings::codegen::InheritTypes::HTMLCanvasElementDerived;
use dom::bindings::codegen::InheritTypes::{ElementCast, HTMLElementCast};
use dom::bindings::global::GlobalRef;
use dom::bindings::js::{MutNullableJS, JSRef, Temporary, OptionalSettable};
use dom::bindings::js::{MutNullableJS, JSRef, Temporary};
use dom::canvasrenderingcontext2d::CanvasRenderingContext2D;
use dom::document::Document;
use dom::element::{Element, ElementTypeId, AttributeHandlers};
@ -83,13 +83,11 @@ impl<'a> HTMLCanvasElementMethods for JSRef<'a, HTMLCanvasElement> {
return None;
}
if self.context.get().is_none() {
Some(self.context.or_init(|| {
let window = window_from_node(self).root();
let (w, h) = (self.width.get() as i32, self.height.get() as i32);
let context = CanvasRenderingContext2D::new(&GlobalRef::Window(*window), self, Size2D(w, h));
self.context.assign(Some(context));
}
self.context.get()
CanvasRenderingContext2D::new(&GlobalRef::Window(*window), self, Size2D(w, h))
}))
}
}