`class Playback`

Renders an isolated, narrated presentation for review and video capture.

Unlike the live display, playback owns its current slide entirely in the browser and does not update the shared presentation controller.

Definitions

`def self.options_from_parameters(parameters)`

Extract playback options from decoded query parameters.

Signature

parameter　parameters　Hash: The decoded query parameters.
returns　Hash: Options suitable for passing to .new.

Implementation

def self.options_from_parameters(parameters)
	{
		autoplay: parameters["autoplay"] == "true",
		controls: parameters["controls"] != "false",
	}
end

`def initialize(presentation:, recording_urls:, autoplay: false, controls: true)`

Signature

parameter　presentation　Presentation: The presentation to play.
parameter　recording_urls　Array(String | Nil): Narration URL for each slide.
parameter　autoplay　Boolean: Whether playback should begin when ready.
parameter　controls　Boolean: Whether playback controls should be visible.

Implementation

def initialize(presentation:, recording_urls:, autoplay: false, controls: true)
	@presentation = presentation
	@recording_urls = recording_urls
	@autoplay = autoplay
	@controls = controls
	@renderer = SlideRenderer.new(templates: presentation.templates)
end

`def stylesheets`

Signature

returns　Array(Stylesheet): The ordered presentation stylesheets.

Implementation

def stylesheets
	@presentation.stylesheets
end

`def slides`

Signature

returns　Array(Slide): The slides in playback order.

Implementation

def slides
	@presentation.slides
end

`def recording_url(index)`

Signature

returns　String | Nil: The narration URL for a slide index.

Implementation

def recording_url(index)
	@recording_urls[index]
end

`def render_slide(slide)`

Render one slide as HTML.

Signature

parameter　slide　Slide: The slide to render.
returns　XRB::MarkupString

Implementation

def render_slide(slide)
	@renderer.render_to_html(slide)
end

`def call`

Render the complete playback page.

Signature

returns　String

Implementation

def call
	TEMPLATE.to_string(self)
end