Class: Volt::EventBinding

Inherits:
BaseBinding show all
Defined in:
lib/volt/page/bindings/event_binding.rb

Instance Attribute Summary collapse

Attributes inherited from BaseBinding

#target, #volt_app

Instance Method Summary collapse

Methods inherited from BaseBinding

#dom_section, #getter_fail, #page, #remove_anchors

Constructor Details

#initialize(volt_app, target, context, binding_name, event_name, call_proc) ⇒ EventBinding

Returns a new instance of EventBinding.



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# File 'lib/volt/page/bindings/event_binding.rb', line 32

def initialize(volt_app, target, context, binding_name, event_name, call_proc)
  super(volt_app, target, context, binding_name)
  @event_name = event_name

  handler = proc do |js_event|
    event = JSEvent.new(js_event)
    event.prevent_default! if event_name == 'submit'

    # Call the proc the user setup for the event in context,
    # pass in the wrapper for the JS event
    result = @context.instance_exec(event, &call_proc)

    # The following doesn't work due to the promise already chained issue.
    # # Ignore native objects.
    # result = nil unless BasicObject === result

    # # if the result is a promise, log an exception if it failed and wasn't
    # # handled
    # if result.is_a?(Promise) && !result.next
    #   result.fail do |err|
    #     Volt.logger.error("EventBinding Error: promise returned from event binding #{@event_name} was rejected")
    #     Volt.logger.error(err)
    #   end
    # end

  end

  @listener = page.events.add(event_name, self, handler)
end

Instance Attribute Details

#binding_name ⇒ Object

Returns the value of attribute binding_name.



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# File 'lib/volt/page/bindings/event_binding.rb', line 30

def binding_name
  @binding_name
end

#context ⇒ Object

Returns the value of attribute context.



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# File 'lib/volt/page/bindings/event_binding.rb', line 30

def context
  @context
end

Instance Method Details

#remove ⇒ Object

Remove the event binding



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# File 'lib/volt/page/bindings/event_binding.rb', line 63

def remove
  page.events.remove(@event_name, self)
end