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Element
Element objects are a type of Node in a Slate document that contain other Element nodes or Text nodes.interface Element {
children: Node[]
}
- "block" or "inline" as defined by
editor.isInline - either "void" or "not void" as defined by
editor.isVoid
A "block" element can only be siblings with other "block" elements. An "inline" node can be siblings with
Text nodes or other "inline" elements.In a not "void" element, Slate handles the rendering of its
children (e.g. in a paragraph where the Text and Inline children are rendered by Slate). In a "void" element, the children are rendered by the Element's render code.Some void elements are effectively stand-ins for text, such as with the Mentions example, where the mention element renders the character's name. Users might want to format Void elements like this with bold, or set their font and size, so
editor.markableVoid tells Slate whether or not to apply Marks to the text children of void elements.Void Elements must
- always have one empty child text node (for selection)
- render using
attributesandchildren(so, their outermost HTML element can't be an HTML void element) - set
contentEditable={false}(for Firefox)
Typical rendering code will resemble this
thematic-break (horizontal rule) element:return (
<div {...attributes} contentEditable={false}>
{children}
<hr />
</div>
)
For a "markable" void such as a
mention element, marks on the empty child element can be used to determine how the void element is rendered (Slate Marks are applied only to Text leaves):const Mention = ({ attributes, children, element }) => {
const selected = useSelected()
const focused = useFocused()
const style: React.CSSProperties = {
padding: '3px 3px 2px',
margin: '0 1px',
verticalAlign: 'baseline',
display: 'inline-block',
borderRadius: '4px',
backgroundColor: '#eee',
fontSize: '0.9em',
boxShadow: selected && focused ? '0 0 0 2px #B4D5FF' : 'none',
}
// See if our empty text child has any styling marks applied and apply those
if (element.children[0].bold) {
style.fontWeight = 'bold'
}
if (element.children[0].italic) {
style.fontStyle = 'italic'
}
return (
<span
{...attributes}
contentEditable={false}
data-cy={`mention-${element.character.replace(' ', '-')}`}
style={style}
>
{children}@{element.character}
</span>
)
}
Check if an element matches a set of
props. Note: This checks custom properties, but it does not ensure that any children are equivalent.Check if a value implements the 'Ancestor' interface.
Check if a
value implements the Element interface.Check if a
value is an array of Element objects.Check if a value implements the
Element interface and has elementKey with selected value. Default it check to type key valueLast modified 1yr ago