Class: StimulusController

Inherits:
Object
  • Object
show all
Defined in:
lib/opal_stimulus/stimulus_controller.rb

Constant Summary collapse

DEFAULT_METHODS = 
%i[initialize connect disconnect dispatch]
DEFAULT_GETTERS = 
%i[element]

Class Method Summary collapse

Instance Method Summary collapse

Class Method Details

.classes=(class_names = []) ⇒ Object 



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# File 'lib/opal_stimulus/stimulus_controller.rb', line 194

def self.classes=(class_names = [])
  `#{self.stimulus_controller}.classes = class_names`

  class_names.each do |class_name|
    js_name = class_name.to_s
    ruby_name = self.to_ruby_name(class_name)

    define_method("#{ruby_name}_class") do
      `return this[#{js_name + "Class"}]`
    end

    define_method("#{ruby_name}_classes") do
      `return this[#{js_name + "Classes"}]`
    end

    define_method("has_#{ruby_name}_class") do
      `return this[#{"has" + js_name.capitalize + "Class"}]`
    end
  end
end

.inherited(subclass) ⇒ Object 



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# File 'lib/opal_stimulus/stimulus_controller.rb', line 11

def self.inherited(subclass)
  ::Opal.bridge(subclass.stimulus_controller, subclass)
end

.method_added(name) ⇒ Object 



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# File 'lib/opal_stimulus/stimulus_controller.rb', line 25

def self.method_added(name)
  return if DEFAULT_GETTERS.include?(name)

  %x{
    #{self.stimulus_controller}.prototype[name] = function (...args) {
      try {
        var wrappedArgs = args.map(function(arg) {
          if (arg && typeof arg === "object" && !arg.$$class) {
            return Opal.JS.Proxy.$new(arg);
          }
          return arg;
        });
        return this['$' + name].apply(this, wrappedArgs);
      } catch (e) {
        console.error("Uncaught", e);
      }
    }
  }
end

.outlets=(outlets = []) ⇒ Object 



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# File 'lib/opal_stimulus/stimulus_controller.rb', line 104

def self.outlets=(outlets = [])
  `#{self.stimulus_controller}.outlets = outlets`

  outlets.each do |outlet|
    js_name = outlet.to_s
    ruby_name = self.to_ruby_name(outlet)

    define_method(ruby_name + "_outlet") do
      `return this[#{js_name + "Outlet"}]`
    end

    define_method(ruby_name + "_outlets") do
      `this[#{js_name + "Outlets"}]`
    end

    define_method("has_" + ruby_name + "_outlet") do
      `return this[#{"has" + js_name.capitalize + "Outlet"}]`
    end

    snake_case_connected = ruby_name + "_outlet_connected"
    camel_case_connected = js_name + "OutletConnected"
    %x{
      #{self.stimulus_controller}.prototype[#{camel_case_connected}] = function() {
        if (this['$respond_to?'] && this['$respond_to?'](#{snake_case_connected})) {
          return this['$' + #{snake_case_connected}]();
        }
      }
    }

    snake_case_disconnected = ruby_name + "_outlet_disconnected"
    camel_case_disconnected = js_name + "OutletDisconnected"
    %x{
      #{self.stimulus_controller}.prototype[#{camel_case_disconnected}] = function() {
        if (this['$respond_to?'] && this['$respond_to?'](#{snake_case_disconnected})) {
          return this['$' + #{snake_case_disconnected}]();
        }
      }
    }
  end
end

.register_all! ⇒ Object 



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# File 'lib/opal_stimulus/stimulus_controller.rb', line 52

def self.register_all!
  subclasses.each do |controller|
    controller.define_method(:dummy) {}

    return if `application.controllers`.include?(`#{controller.stimulus_name}`)
    `application.register(#{controller.stimulus_name}, #{controller.stimulus_controller})`
  end
end

.stimulus_controller ⇒ Object 



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# File 'lib/opal_stimulus/stimulus_controller.rb', line 15

def self.stimulus_controller
  return @stimulus_controller if @stimulus_controller
  @stimulus_controller = `class extends Controller {}`
  @stimulus_controller
end

.stimulus_name ⇒ Object 



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# File 'lib/opal_stimulus/stimulus_controller.rb', line 21

def self.stimulus_name
  self.name.gsub(/Controller$/, "").gsub(/([a-z])([A-Z])/, '\1-\2').gsub("::", "--").downcase
end

.targets=(targets = []) ⇒ Object 



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# File 'lib/opal_stimulus/stimulus_controller.rb', line 61

def self.targets=(targets = [])
  `#{self.stimulus_controller}.targets = targets`

  targets.each do |target|
    js_name = target.to_s
    ruby_name = self.to_ruby_name(target)

    define_method(ruby_name + "_target") do
      JS::Proxy.new(`this[#{js_name + "Target"}]`)
    end

    define_method(ruby_name + "_targets") do
      `this[#{js_name + "Targets"}]`.map do |el|
        JS::Proxy.new(el)
      end
    end

    define_method("has_" + ruby_name + "_target") do
      `this[#{"has" + js_name.capitalize + "Target"}]`
    end

    snake_case_connected = ruby_name + "_target_connected"
    camel_case_connected = js_name + "TargetConnected"
    %x{
      #{self.stimulus_controller}.prototype[#{camel_case_connected}] = function() {
        if (this['$respond_to?'] && this['$respond_to?'](#{snake_case_connected})) {
          return this['$' + #{snake_case_connected}]();
        }
      }
    }

    snake_case_disconnected = ruby_name + "_target_disconnected"
    camel_case_disconnected = js_name + "TargetDisconnected"
    %x{
      #{self.stimulus_controller}.prototype[#{camel_case_disconnected}] = function() {
        if (this['$respond_to?'] && this['$respond_to?'](#{snake_case_disconnected})) {
          return this['$' + #{snake_case_disconnected}]();
        }
      }
    }
  end
end

.to_ruby_name(name) ⇒ Object 



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# File 'lib/opal_stimulus/stimulus_controller.rb', line 45

def self.to_ruby_name(name)
  name
    .to_s
    .gsub(/([A-Z]+)/) { "_#{$1.downcase}" }
    .sub(/^_/, '')
end

.values=(values_hash = {}) ⇒ Object 



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# File 'lib/opal_stimulus/stimulus_controller.rb', line 145

def self.values=(values_hash = {})
  js_values = {}

  values_hash.each do |name, type|
    name = self.to_ruby_name(name)

    js_type = case type
    when :string then `String`
    when :number then `Number`
    when :boolean then `Boolean`
    when :array then `Array`
    when :object then `Object`
    else
      raise ArgumentError,
        "Unsupported value type: #{type}, please use :string, :number, :boolean, :array, or :object"
    end

    js_values[name] = js_type

    `#{self.stimulus_controller}.values = #{js_values.to_n}`

    define_method(name + "_value") do
      Native(`this[#{name + "Value"}]`)
    end

    define_method(name + "_value=") do |value|
      Native(`this[#{name + "Value"}]= #{value}`)
    end

    define_method("has_#{name}") do
      `return this[#{"has" + name.to_s.capitalize + "Value"}]`
    end

    snake_case_changed = "#{name}_value_changed"
    camel_case_changed = "#{name}ValueChanged"
    %x{
      #{self.stimulus_controller}.prototype[#{camel_case_changed}] = function(value, previousValue) {
        if (#{type == :object}) {
          value = JSON.stringify(value)
          previousValue = JSON.stringify(previousValue)
        }
        if (this['$respond_to?'] && this['$respond_to?'](#{snake_case_changed})) {
          return this['$' + #{snake_case_changed}](value, previousValue);
        }
      }
    }
  end
end

Instance Method Details

#document ⇒ Object 



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# File 'lib/opal_stimulus/stimulus_controller.rb', line 223

def document
  @document ||= JS::Proxy.new($$.document)
end

#element ⇒ Object 



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# File 'lib/opal_stimulus/stimulus_controller.rb', line 215

def element
  JS::Proxy.new(`this.element`)
end

#window ⇒ Object 



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# File 'lib/opal_stimulus/stimulus_controller.rb', line 219

def window
  @window ||= JS::Proxy.new($$.window)
end