Metric-class: Metric widget

In termr: Modern Reactive Terminal Applications with Data Workflows

Metric widget

Description

See metric().

Super class

Widget -> Metric

Public fields

formatter

⁠function(value)⁠ returning a string.

Active bindings

value

The value (reactive).

delta

The change shown next to the value (reactive).

Methods

Public methods

• Metric$new()

• Metric$default_style()

• Metric$update()

• Metric$render()

• Metric$clone()

Inherited methods

• Widget$add_class()
• Widget$ancestors()
• Widget$animate()
• Widget$arrange_children()
• Widget$bind()
• Widget$bind_reactive()
• Widget$bindings()
• Widget$blur()
• Widget$capture_mouse()
• Widget$child_clip()
• Widget$clear()
• Widget$computed_style()
• Widget$content_height()
• Widget$content_width()
• Widget$default_bindings()
• Widget$focus()
• Widget$format()
• Widget$get_state()
• Widget$has_class()
• Widget$invalidate()
• Widget$invalidate_paint()
• Widget$is_displayed()
• Widget$is_enabled()
• Widget$layout_descend()
• Widget$layout_differs()
• Widget$matches()
• Widget$mount()
• Widget$on()
• Widget$paint()
• Widget$post_message()
• Widget$print()
• Widget$pseudo_states()
• Widget$query()
• Widget$query_one()
• Widget$refresh()
• Widget$release_mouse()
• Widget$remove()
• Widget$remove_children()
• Widget$remove_class()
• Widget$render_lines()
• Widget$replace()
• Widget$run_action()
• Widget$run_process()
• Widget$run_worker()
• Widget$set()
• Widget$set_interval()
• Widget$set_state()
• Widget$set_timeout()
• Widget$toggle_class()
• Widget$walk()

---

Metric$new()

Create a metric. See metric().

Usage

Metric$new(
  label,
  value = NA,
  delta = NULL,
  format = NULL,
  id = NULL,
  classes = NULL,
  style = NULL
)

Arguments

label

Label.

value

Value.

delta

Change.

format

Formatter.

id, classes, style

See Widget.

---

Metric$default_style()

The built-in style.

Usage

Metric$default_style()

---

Metric$update()

Set the value (and optionally the delta).

Usage

Metric$update(value, delta = NULL)

Arguments

value

New value.

delta

New delta (NULL keeps none).

---

Metric$render()

Label, value and delta lines.

Usage

Metric$render()

---

Metric$clone()

The objects of this class are cloneable with this method.

Usage

Metric$clone(deep = FALSE)

Arguments

deep

Whether to make a deep clone.

termr documentation built on Oct. 21, 2026, 5:13 p.m.