Class: Markbridge::Renderers::Discourse::RenderContext

Inherits:
Object
  • Object
show all
Defined in:
lib/markbridge/renderers/discourse/render_context.rb

Overview

Immutable context for rendering that wraps the parent chain. Provides query methods to ask about parent elements without the renderer knowing about specific element types.

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(parents = [], html_mode: false) ⇒ RenderContext

Returns a new instance of RenderContext.



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# File 'lib/markbridge/renderers/discourse/render_context.rb', line 12

def initialize(parents = [], html_mode: false)
  @parents = parents.freeze
  @depth = parents.size
  @html_mode = html_mode
end

Instance Attribute Details

#depth ⇒ Object (readonly)

Returns the value of attribute depth.



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# File 'lib/markbridge/renderers/discourse/render_context.rb', line 10

def depth
  @depth
end

#parents ⇒ Object (readonly)

Returns the value of attribute parents.



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# File 'lib/markbridge/renderers/discourse/render_context.rb', line 10

def parents
  @parents
end

Instance Method Details

#count_parents(klass) ⇒ Integer

Count parents that are is_a? klass (handles subclasses).

Parameters:

  • klass (Class)

Returns:

  • (Integer) 


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# File 'lib/markbridge/renderers/discourse/render_context.rb', line 47

def count_parents(klass)
  @parents.count { |parent| parent.is_a?(klass) }
end

#find_parent(klass) ⇒ AST::Element?

Find closest parent that is_a? klass (handles subclasses).

Parameters:

  • klass (Class)

Returns:



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# File 'lib/markbridge/renderers/discourse/render_context.rb', line 40

def find_parent(klass)
  @parents.reverse_each.find { |parent| parent.is_a?(klass) }
end

#has_parent?(klass) ⇒ Boolean

Check if any parent is_a? klass (handles subclasses).

Parameters:

  • klass (Class)

Returns:

  • (Boolean) 


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# File 'lib/markbridge/renderers/discourse/render_context.rb', line 54

def has_parent?(klass)
  @parents.any? { |parent| parent.is_a?(klass) }
end

#html_mode? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/markbridge/renderers/discourse/render_context.rb', line 33

def html_mode?
  @html_mode
end

#root? ⇒ Boolean

Check if we’re at the root (no parents).

Returns:

  • (Boolean) 


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# File 'lib/markbridge/renderers/discourse/render_context.rb', line 60

def root?
  @depth.zero?
end

#with_html_mode(value) ⇒ RenderContext

Create new context with html_mode toggled.

Parameters:

  • value (Boolean)

Returns:



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# File 'lib/markbridge/renderers/discourse/render_context.rb', line 28

def with_html_mode(value)
  self.class.new(@parents, html_mode: value)
end

#with_parent(element) ⇒ RenderContext

Create new context with element added to parent chain.

Parameters:

Returns:



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# File 'lib/markbridge/renderers/discourse/render_context.rb', line 21

def with_parent(element)
  self.class.new(@parents + [element], html_mode: @html_mode)
end