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Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

2026-03-04 21:07:04 +01:00

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FlowFuse `ui-button` Manual (EVOLV Reference)

Source: https://dashboard.flowfuse.com/nodes/widgets/ui-button.html

Purpose

Clickable button that sends a message on user interaction.

Properties

Property	Type	Dynamic	Notes
`group`	ref	No	Parent ui-group
`width`	int	No	Columns
`height`	int	No	Row units
`label`	string	Yes	Button text
`icon`	string	Yes	Material Design icon name (no `mdi-` prefix)
`iconPosition`	string	Yes	`"left"` or `"right"`
`buttonColor`	string	Yes	Background color
`textColor`	string	Yes	Label color (auto-calculated if omitted)
`iconColor`	string	Yes	Icon color (matches text if omitted)
`tooltip`	string	No	Hover tooltip
`order`	int	No	Position in group
`emulateClick`	bool	No	Trigger click on any received msg

Events

Event	Enabled By	Output
Click	`onclick: true`	`msg.payload` = configured value
Pointer Down	`onpointerdown: true`	`msg.payload` + `msg._event` with timestamp
Pointer Up	`onpointerup: true`	`msg.payload` + `msg._event` with timestamp

Hold duration = pointerup._event.timestamp - pointerdown._event.timestamp.

Input

msg.payload — sets button payload value. With emulateClick: true, any input msg triggers a click.

msg.enabled — true / false to enable/disable the button.

Dynamic Properties (`msg.ui_update`)

msg.ui_update = {
  label: "Stop",
  icon: "stop",
  iconPosition: "left",
  buttonColor: "#f44336",
  textColor: "#ffffff",
  iconColor: "#ffffff",
  class: "my-btn-class"
};

EVOLV Key Rules

Use buttons for operator actions (start/stop pump, acknowledge alarm).
Set emulateClick: false (default) — don't auto-trigger on incoming messages.
For toggle buttons, update label/color dynamically via msg.ui_update from downstream logic.
Pair with confirmation dialog (ui-notification or ui-template) for destructive actions.
Standard sizing: width: 2, height: 1 for inline; width: 4, height: 1 for full-width in 4-col group.

2.2 KiB Raw Blame History

FlowFuse ui-button Manual (EVOLV Reference)