Class: Page

Inherits:
Object show all
Defined in:
lib/volt/page/page.rb

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize ⇒ Page

Returns a new instance of Page.



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# File 'lib/volt/page/page.rb', line 38

def initialize
  @model_classes = {}

  # Run the code to setup the page
  @page = ReactiveValue.new(Model.new)

  @url = ReactiveValue.new(URL.new)
  @params = @url.params
  @url_tracker = UrlTracker.new(self)

  @events = DocumentEvents.new
  @draw_cycle = DrawCycle.new

  if RUBY_PLATFORM == 'opal'
    # Setup escape binding for console
    %x{
      $(document).keyup(function(e) {
        if (e.keyCode == 27) {
          Opal.gvars.page.$launch_console();
        }
      });

      $(document).on('click', 'a', function(event) {
        return Opal.gvars.page.$link_clicked($(this).attr('href'), event);
      });
    }
  end

  # Initialize tasks so we can get the reload message
  self.tasks if Volt.env.development?
end

Instance Attribute Details

#draw_cycle ⇒ Object (readonly)

Returns the value of attribute draw_cycle.



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# File 'lib/volt/page/page.rb', line 36

def draw_cycle
  @draw_cycle
end

#events ⇒ Object (readonly)

Returns the value of attribute events.



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# File 'lib/volt/page/page.rb', line 36

def events
  @events
end

#page ⇒ Object (readonly)

Returns the value of attribute page.



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# File 'lib/volt/page/page.rb', line 36

def page
  @page
end

#params ⇒ Object (readonly)

Returns the value of attribute params.



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# File 'lib/volt/page/page.rb', line 36

def params
  @params
end

#routes ⇒ Object (readonly)

Returns the value of attribute routes.



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# File 'lib/volt/page/page.rb', line 36

def routes
  @routes
end

#templates ⇒ Object (readonly)

Returns the value of attribute templates.



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# File 'lib/volt/page/page.rb', line 36

def templates
  @templates
end

#url ⇒ Object (readonly)

Returns the value of attribute url.



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# File 'lib/volt/page/page.rb', line 36

def url
  @url
end

Instance Method Details

#add_model(model_name) ⇒ Object 



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# File 'lib/volt/page/page.rb', line 133

def add_model(model_name)
  @model_classes[["*", "_#{model_name}"]] = Object.const_get(model_name.camelize)
end

#add_routes(&block) ⇒ Object 



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# File 'lib/volt/page/page.rb', line 143

def add_routes(&block)
  @routes = Routes.new.define(&block)
  @url.cur.router = @routes
end

#add_template(name, template, bindings) ⇒ Object 



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# File 'lib/volt/page/page.rb', line 137

def add_template(name, template, bindings)
  @templates ||= {}
  @templates[name] = {'html' => template, 'bindings' => bindings}
  # puts "Add Template: #{name}"
end

#binding_name ⇒ Object

We provide a binding_name, so we can bind events on the document



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# File 'lib/volt/page/page.rb', line 111

def binding_name
  'page'
end

#channel ⇒ Object 



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# File 'lib/volt/page/page.rb', line 119

def channel
  @channel ||= begin
    if Volt.client?
      ReactiveValue.new(Channel.new)
    else
      ReactiveValue.new(ChannelStub.new)
    end
  end
end

#flash ⇒ Object 



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# File 'lib/volt/page/page.rb', line 70

def flash
  @flash ||= ReactiveValue.new(Model.new({}, persistor: Persistors::Flash))
end

#launch_console ⇒ Object 



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# File 'lib/volt/page/page.rb', line 115

def launch_console
  puts "Launch Console"
end

#link_clicked(url = '', event = nil) ⇒ Object 



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# File 'lib/volt/page/page.rb', line 86

def link_clicked(url='', event=nil)
  # Skip when href == ''
  return false if url.blank?

  # Normalize url
  # Benchmark.bm(1) do
  if @url.parse(url)
    if event
      # Handled new url
      `event.stopPropagation();`
    end

    # Clear the flash
    flash.clear

    # return false to stop the event propigation
    return false
  end
  # end

  # Not stopping, process link normally
  return true
end

#load_stored_page ⇒ Object

When the page is reloaded from the backend, we store the $page.page, so we can reload the page in the exact same state. Speeds up development.



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# File 'lib/volt/page/page.rb', line 176

def load_stored_page
  if Volt.client?
    if `sessionStorage`
      page_obj_str = nil

      `page_obj_str = sessionStorage.getItem('___page');`
      `if (page_obj_str) {`
        `sessionStorage.removeItem('___page');`

        JSON.parse(page_obj_str).each_pair do |key, value|
          self.page.send(:"#{key}=", value)
        end
      `}`
    end
  end
rescue => e
  puts "Unable to restore: #{e.inspect}"
end

#local_store ⇒ Object 



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# File 'lib/volt/page/page.rb', line 78

def local_store
  @local_store ||= ReactiveValue.new(Model.new({}, persistor: Persistors::LocalStore))
end

#start ⇒ Object 



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# File 'lib/volt/page/page.rb', line 148

def start
  # Setup to render template
  Element.find('body').html = "<!-- $CONTENT --><!-- $/CONTENT -->"

  load_stored_page

  # Do the initial url params parse
  @url_tracker.url_updated(true)

  main_controller = MainController.new

  # Setup main page template
  TemplateRenderer.new(self, DomTarget.new, main_controller, 'CONTENT', 'main/main/main/body')

  # Setup title listener template
  title_target = AttributeTarget.new
  title_target.on('changed') do
    title = title_target.to_html
    `document.title = title;`
  end
  TemplateRenderer.new(self, title_target, main_controller, "main", "main/main/main/title")

  # TODO: this dom ready should really happen in the template renderer
  main_controller.dom_ready if main_controller.respond_to?(:dom_ready)
end

#store ⇒ Object 



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# File 'lib/volt/page/page.rb', line 74

def store
  @store ||= ReactiveValue.new(Model.new({}, persistor: Persistors::StoreFactory.new(tasks)))
end

#tasks ⇒ Object 



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# File 'lib/volt/page/page.rb', line 82

def tasks
  @tasks ||= Tasks.new(self)
end