pub enum NodeData {
Element(Box<Element>),
Text(Box<Chars>),
}
Expand description
Data for a single DOM node.
§Memory consumption
SVG files look like this, roughly:
<svg>
<rect x="10" y="20"/>
<path d="..."/>
<text x="10" y="20">Hello</text>
<!-- etc -->
</svg>
Each element has a bunch of data, including the styles, which is
the biggest consumer of memory within the Element
struct. But
between each element there is a text node; in the example above
there are a bunch of text nodes with just whitespace (newlines and
spaces), and a single text node with “Hello
” in it from the
<text>
element.
§Accessing the node’s contents
Code that traverses the DOM tree needs to find out at runtime what
each node stands for. First, use the is_chars
or is_element
methods from the NodeBorrow
trait to see if you can then call
borrow_chars
, borrow_element
, or borrow_element_mut
.
Variants§
Implementations§
Trait Implementations§
Auto Trait Implementations§
impl !RefUnwindSafe for NodeData
impl !Send for NodeData
impl !Sync for NodeData
impl Unpin for NodeData
impl UnwindSafe for NodeData
Blanket Implementations§
source§impl<T> BorrowMut<T> for Twhere
T: ?Sized,
impl<T> BorrowMut<T> for Twhere
T: ?Sized,
source§fn borrow_mut(&mut self) -> &mut T
fn borrow_mut(&mut self) -> &mut T
Mutably borrows from an owned value. Read more
§impl<T> Pointable for T
impl<T> Pointable for T
§impl<SS, SP> SupersetOf<SS> for SPwhere
SS: SubsetOf<SP>,
impl<SS, SP> SupersetOf<SS> for SPwhere
SS: SubsetOf<SP>,
§fn to_subset(&self) -> Option<SS>
fn to_subset(&self) -> Option<SS>
The inverse inclusion map: attempts to construct
self
from the equivalent element of its
superset. Read more§fn is_in_subset(&self) -> bool
fn is_in_subset(&self) -> bool
Checks if
self
is actually part of its subset T
(and can be converted to it).§fn to_subset_unchecked(&self) -> SS
fn to_subset_unchecked(&self) -> SS
Use with care! Same as
self.to_subset
but without any property checks. Always succeeds.§fn from_subset(element: &SS) -> SP
fn from_subset(element: &SS) -> SP
The inclusion map: converts
self
to the equivalent element of its superset.