Declares a capability that this component supports.

Capabilities inform the runtime about special behaviors:

• :gestures - handles pan/zoom/rotate gestures
• :accessibility - provides accessibility tree
• :animation - supports custom animations
• :textures - renders to texture (e.g., camera, AR)
• :overlay - can render above other content
• :clipping - supports clipping masks
• :touch - handles raw touch events
• :keyboard - handles keyboard input
• :focus - participates in focus navigation

Example

capability :gestures
capability :accessibility
capability :animation

Evaluates a component definition block.

Defines an event that the component can emit.

Example

event "progress"
event "ended", payload: %{position: :f32, duration: :f32}

Maps a component to a native platform class.

Example

native "ios", "DalaVideoView"
native "android", "com.dala.video.VideoView"

Defines a property for the component.

Types

• :string - UTF-8 string
• :bool - boolean (true/false)
• :integer - signed 64-bit integer
• :float - 64-bit float
• :f32 - 32-bit float (binary protocol)
• :f64 - 64-bit float (binary protocol)
• :color - color token or ARGB integer
• :binary - binary data
• :list - list of values
• :map - map/dictionary

Options

• :required - if true, prop must be provided (default: false)
• :default - default value if not provided
• :doc - documentation string

Example

prop "volume", :f32, required: true
prop "autoplay", :bool, default: false
prop "source", :string