Struct StyleRule 

pub struct StyleRule { /* private fields */ }

One conditional style. See the module docs.

Implementations

impl StyleRule

pub fn new( column: impl Into<ColumnRef>, comparison: Comparison, value: impl Into<Value>, style: Style, ) -> Self

Style a cell of column when it compares to value by comparison.

pub fn when( column: impl Into<ColumnRef>, predicate: impl Fn(&Value) -> bool + Send + Sync + 'static, style: Style, ) -> Self

Style a cell of column when predicate holds for its value.

pub fn target(self, target: Target) -> Self

Style the row or the column instead of the cell.

pub fn column(&self) -> &ColumnRef

The column the rule reads.

pub fn style(&self) -> &Style

The style it applies.

pub fn target_kind(&self) -> Target

What it styles.

pub fn matches(&self, value: &Value) -> bool

Whether value meets the rule’s condition.

pub fn comparison(&self) -> Option<(Comparison, &Value)>

The comparison and the value it compares with; None for a rule with a Rust predicate.

pub fn parse(spec: &str) -> Result<Self, RuleError>

Read a rule spec, COLUMN OP VALUE:STYLE or COLUMN OP VALUE:TARGET:STYLE (latency>500:bold red, status=failed:row:on red). See Rule specs. The error names the spec.

pub fn to_spec(&self) -> Option<String>

The rule as a spec parse reads back to the same rule: None for a Rust predicate, an ordering against Value::Null or a float that is not finite, which a spec cannot write.

Trait Implementations

impl Clone for StyleRule

fn clone(&self) -> Self

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for StyleRule

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

Formats the value using the given formatter.

impl Display for StyleRule

The spec (StyleRule::to_spec), or COLUMN <predicate>:STYLE for a rule with a Rust predicate.

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

Formats the value using the given formatter.

impl FromStr for StyleRule

type Err = RuleError

The associated error which can be returned from parsing.

fn from_str(spec: &str) -> Result<Self, RuleError>

Parses a string s to return a value of this type.