Class: Puppeteer::ExecutionContext

Inherits:
Object
  • Object
show all
Includes:
IfPresent
Defined in:
lib/puppeteer/execution_context.rb

Defined Under Namespace

Classes: EvaluationError, JavaScriptExpression, JavaScriptFunction

Constant Summary collapse

EVALUATION_SCRIPT_URL = 
'__puppeteer_evaluation_script__'
SOURCE_URL_REGEX = 
/^[\040\t]*\/\/[@#] sourceURL=\s*(\S*?)\s*$/m

Instance Attribute Summary collapse

Instance Method Summary collapse

Methods included from IfPresent

#if_present

Constructor Details

#initialize(client, context_payload, world) ⇒ ExecutionContext

Returns a new instance of ExecutionContext.

Parameters:



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# File 'lib/puppeteer/execution_context.rb', line 11

def initialize(client, context_payload, world)
  @client = client
  @world = world
  @context_id = context_payload['id']
end

Instance Attribute Details

#client ⇒ Object (readonly)

Returns the value of attribute client.



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# File 'lib/puppeteer/execution_context.rb', line 17

def client
  @client
end

#world ⇒ Object (readonly)

Returns the value of attribute world.



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# File 'lib/puppeteer/execution_context.rb', line 17

def world
  @world
end

Instance Method Details

#_context_id ⇒ Object

only used in DomWorld#delete_context



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# File 'lib/puppeteer/execution_context.rb', line 20

def _context_id
  @context_id
end

#adopt_backend_node_id(backend_node_id) ⇒ Puppeteer::ElementHandle

Parameters:

  • backend_node_id (Integer)

Returns:



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# File 'lib/puppeteer/execution_context.rb', line 221

def adopt_backend_node_id(backend_node_id)
  response = @client.send_message('DOM.resolveNode',
    backendNodeId: backend_node_id,
    executionContextId: @context_id,
  )
  Puppeteer::JSHandle.create(
    context: self,
    remote_object: Puppeteer::RemoteObject.new(response["object"]),
  )
end

#adopt_element_handle(element_handle) ⇒ Puppeteer::ElementHandle

Parameters:

Returns:



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# File 'lib/puppeteer/execution_context.rb', line 234

def adopt_element_handle(element_handle)
  if element_handle.execution_context == self
    raise ArgumentError.new('Cannot adopt handle that already belongs to this execution context')
  end

  unless @world
    raise 'Cannot adopt handle without DOMWorld'
  end

  node_info = element_handle.remote_object.node_info(@client)
  response = @client.send_message('DOM.resolveNode',
    backendNodeId: node_info["node"]["backendNodeId"],
    executionContextId: @context_id,
  )

  Puppeteer::JSHandle.create(
    context: self,
    remote_object: Puppeteer::RemoteObject.new(response["object"]),
  )
end

#evaluate(page_function, *args) ⇒ Object

Parameters:

  • page_function (String)

Returns:

  • (Object) 


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# File 'lib/puppeteer/execution_context.rb', line 33

def evaluate(page_function, *args)
  evaluate_internal(true, page_function, *args)
end

#evaluate_handle(page_function, *args) ⇒ Puppeteer::JSHandle

Parameters:

  • page_function (String)

Returns:



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# File 'lib/puppeteer/execution_context.rb', line 39

def evaluate_handle(page_function, *args)
  evaluate_internal(false, page_function, *args)
end

#frame ⇒ Puppeteer::Frame

Returns:



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# File 'lib/puppeteer/execution_context.rb', line 25

def frame
  if_present(@world) do |world|
    world.frame
  end
end