Class: Glimmer::DSL::Opal::CustomWidgetExpression

Inherits:
Expression
  • Object
show all
Includes:
ParentExpression, TopLevelExpression
Defined in:
lib/glimmer/dsl/opal/custom_widget_expression.rb

Instance Method Summary collapse

Instance Method Details

#add_content(parent, keyword, *args, &block) ⇒ Object

def add_content(parent, &content)

  content.call(parent) if parent.is_a?(Glimmer::SWT::ShellProxy) || parent.is_a?(Glimmer::UI::CustomShell)
end



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# File 'lib/glimmer/dsl/opal/custom_widget_expression.rb', line 88

def add_content(parent, keyword, *args, &block)
  return unless parent.is_a?(Glimmer::UI::CustomWidget)
  # TODO consider avoiding source_location since it does not work in Opal
  if block.source_location && (block.source_location == parent.content&.__getobj__&.source_location)
    parent.content.call(parent) unless parent.content.called?
  else
    super
  end
end

#can_interpret?(parent, keyword, *args, &block) ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/glimmer/dsl/opal/custom_widget_expression.rb', line 40

def can_interpret?(parent, keyword, *args, &block)
  !!UI::CustomWidget.for(keyword)
end

#interpret(parent, keyword, *args, &block) ⇒ Object 



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# File 'lib/glimmer/dsl/opal/custom_widget_expression.rb', line 44

def interpret(parent, keyword, *args, &block)
  begin
    require_path = LocalStorage[keyword]
    require(require_path) if require_path
  rescue => e
    Glimmer::Config.logger.debug e.message
  end
  custom_widget_class = UI::CustomWidget.for(keyword)
  # TODO clean code by extracting methods into CustomShell
  if !Glimmer::UI::CustomShell.requested? && custom_widget_class&.ancestors&.to_a.include?(Glimmer::UI::CustomShell)
    if Glimmer::SWT::DisplayProxy.instance.shells.empty? || Glimmer::SWT::DisplayProxy.open_custom_shells_in_current_window?
      custom_widget_class.new(parent, args, {}, &block)
    else
      options = args.last.is_a?(Hash) ? args.pop : {}
      options = options.merge('swt_style' => args.join(',')) unless args.join(',').empty?
      params = {
        'custom_shell' => keyword
      }.merge(options)
      param_string = params.to_a.map {|k, v| "#{k}=#{URI.encode_www_form_component(v)}"}.join('&')
      url = "#{`document.location.href`}?#{param_string}"
      `window.open(#{url})`
       # just a placeholder that has an open method # TODO return an actual CustomShell in the future that does the work happening above in the #open method
      Glimmer::SWT::MakeShiftShellProxy.new
    end
  else
    if Glimmer::UI::CustomShell.requested_and_not_handled?
      parameters = Glimmer::UI::CustomShell.request_parameter_string.split("&").map {|str| str.split("=")}.to_h
      `history.pushState(#{parameters.merge('custom_shell_handled' => 'true')}, document.title, #{"?#{Glimmer::UI::CustomShell.encoded_request_parameter_string}&custom_shell_handled=true"})`
      custom_shell_keyword = parameters.delete('custom_shell')
      CustomWidgetExpression.new.interpret(nil, custom_shell_keyword, *[parameters])
      `history.pushState(#{parameters.reject {|k,v| k == 'custom_shell_handled'}}, document.title, #{"?#{Glimmer::UI::CustomShell.encoded_request_parameter_string.sub('&custom_shell_handled=true', '')}"})`
      # just a placeholder that has an open method # TODO return an actual CustomShell in the future that does the work happening above in the #open method
      Glimmer::SWT::MakeShiftShellProxy.new
    else
      custom_widget_class&.new(parent, args, {}, &block)
    end
  end
end