Class: Wedge::Events

Inherits:
Object show all
Defined in:
lib/wedge/events.rb

Constant Summary collapse

VIP_ORDER_LIST = 
%w(history_change)

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize ⇒ Events

Returns a new instance of Events.



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# File 'lib/wedge/events.rb', line 7

def initialize
  @events = IndifferentHash.new
end

Instance Attribute Details

#events ⇒ Object

Returns the value of attribute events.



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# File 'lib/wedge/events.rb', line 3

def events
  @events
end

Instance Method Details

#add(wedge_name, *args, &block) ⇒ Object 



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# File 'lib/wedge/events.rb', line 11

def add(wedge_name, *args, &block)
  event_name = args.shift

  events = @events[wedge_name] ||= IndifferentHash.new({
    browser_events: [],
    object_events: IndifferentHash.new,
    on_count: 0
  })

  # fix: there is a bug in opal where even though it's only including a
  # module once it is loading the class twice. So this stops on events being
  # double added
  return if events[:on_count] >= Wedge.config.component_class[wedge_name].wedge_on_count
  events[:on_count] += 1

  event = {
    name: event_name,
    block: block,
    wedge_name: wedge_name,
    options: {}
  }

  args.each do |arg|
    if arg.is_a?(String)
      event[:selector] = arg
    elsif arg.is_a? Class
      event[:klass] = arg
    else
      event[:options] = event[:options].merge(arg).indifferent.to_h
    end
  end

  if %w(ready history_change).include?(event[:name].to_s) || event[:name] =~ /[:\s]/ || event[:selector]
    events[:browser_events] << event
  else
    if for_component = event[:options].delete(:for)
      events = @events[for_component] ||= IndifferentHash.new({
        browser_events: [],
        object_events: IndifferentHash.new,
        on_count: 0
      })
    end

    (events[:object_events][event_name] ||= []) << event
  end
end

#trigger(wedge_name, event_name, *args) ⇒ Object 



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# File 'lib/wedge/events.rb', line 58

def trigger(wedge_name, event_name, *args)
  event_name = event_name.to_s

  return unless events = @events[wedge_name]

  case event_name
  when 'browser_events'
    browser_events = events[:browser_events]

    # We make sure anything in the VIP_ORDER_LIST goes first
    (browser_events.sort_by do |x|
      [VIP_ORDER_LIST.index(x[:name]) || VIP_ORDER_LIST.length, browser_events.index(x)]
    end).each do |event|
      trigger_browser_event wedge_name, event
    end
  else
    (events[:object_events][event_name] || []).each do |event|
      Wedge[event[:wedge_name]].instance_exec(*args, &event[:block])
    end
  end
end

#trigger_browser_event(wedge_name, event) ⇒ Object 



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# File 'lib/wedge/events.rb', line 80

def trigger_browser_event wedge_name, event
  comp = Wedge[wedge_name]

  case
  when event[:name].to_s == 'ready'
    el = Element.find(event[:selector] != '' ? event[:selector] : 'body')

    comp.instance_variable_set :@this, DOM[el]
    comp.instance_exec el, &event[:block]
  when event[:name].to_s == 'history_change'
    $window.history.change do |he|
      comp.instance_exec he, &event[:block]
    end
  when event[:name].to_s == 'submit' && event[:options][:form]
    Document.on :submit, event[:selector] do |evt|
      el = evt.current_target
      evt.prevent_default

      params = {}

      # loop through all the forum values
      el.serialize_array.each do |field|
        # we need to make it native to access it like ruby
        field    = Native(field)
        name     = field['name']
        value    = field['value']

        if name =~ /\[\]$/
          name = name.gsub(/\[\]$/,'')
          params[name] = [] if params[name].nil?
          params[name].push value
        else
          params[name] = value
        end
      end

      params_obj = {}

      params.each do |param, value|
        keys = param.gsub(/[^a-z0-9_]/, '|').gsub(/\|\|/, '|').gsub(/\|$/, '').split('|')
        params_obj = params_obj.deep_merge keys.reverse.inject(value) { |a, n| { n => a } }
      end

      opts = event[:options].dup.reject { |k, v| k.to_s == 'form' }
      opts[:dom] = el

      if opts && key = opts[:key]
        form = Wedge[event[:options][:form], params_obj[key], opts]
      else
        form = Wedge[event[:options][:form], params_obj, opts]
      end

      el.find(opts[:error_selector] || '.field-error').remove

      comp.instance_variable_set :@this, DOM[el]
      comp.instance_exec form, evt.current_target, evt, &event[:block]
    end
  else
    args = [event[:name]]

    if selector = event[:selector]
      args << selector
    end

    Document.on(*args) do |evt|
      el = evt.current_target
      comp.instance_variable_set :@this, DOM[el]
      comp.instance_exec el, evt, &event[:block]
    end

    if event[:name] =~ /ready/
      el = Element.find(event[:selector] != '' ? event[:selector] : 'body')
      comp.instance_variable_set :@this, DOM[el]
      comp.instance_exec el, &event[:block]
    end
  end
end