Struct Node 

pub struct Node {
    pub id: String,
    pub label: String,
    pub shape: NodeShape,
}

A single node in the diagram.

Fields

id: String

Unique identifier used in edge definitions (e.g. A).

label: String

Human-readable label displayed inside the node box.

shape: NodeShape

Visual shape of the node.

Implementations

impl Node

pub fn new( id: impl Into<String>, label: impl Into<String>, shape: NodeShape, ) -> Self

Construct a new node.

Arguments

• id — unique identifier used in edge definitions
• label — human-readable text displayed inside the node box
• shape — visual shape of the node

Examples

use mermaid_text::{Node, NodeShape};

let node = Node::new("A", "Start", NodeShape::Rounded);
assert_eq!(node.id, "A");
assert_eq!(node.label, "Start");
assert_eq!(node.shape, NodeShape::Rounded);

pub fn label_width(&self) -> usize

Return the widest line of the label, measured in terminal cells.

Labels may contain \n line breaks (inserted by the parser when converting <br/> tags or when soft-wrapping long lines). The renderer sizes node boxes by the widest single line rather than by the whole label string, so the parser-inserted breaks actually narrow the box.

Returns 0 for an empty label.

pub fn label_line_count(&self) -> usize

Return the number of rendered text rows this node’s label occupies.

Always at least 1, even for empty labels, so node boxes retain their minimum height.

Trait Implementations

impl Clone for Node

fn clone(&self) -> Node

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for Node

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl PartialEq for Node

fn eq(&self, other: &Node) -> bool

Tests for self and other values to be equal, and is used by ==.

fn ne(&self, other: &Rhs) -> bool

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl Eq for Node

impl StructuralPartialEq for Node