Class: Scarpe::WebviewListBox

Inherits:
WebviewWidget show all
Defined in:
lib/scarpe/wv/list_box.rb

Constant Summary

Constants included from Shoes::Log

Shoes::Log::DEFAULT_COMPONENT, Shoes::Log::DEFAULT_DEBUG_LOG_CONFIG, Shoes::Log::DEFAULT_LOG_CONFIG

Instance Attribute Summary collapse

Attributes inherited from WebviewWidget

#children, #parent, #shoes_linkable_id

Attributes inherited from Shoes::Linkable

#linkable_id

Instance Method Summary collapse

Methods inherited from WebviewWidget

#add_child, #bind, #destroy_self, display_class_for, #handler_js_code, #html_element, #html_id, #inspect, #needs_update!, #promise_update, #remove_child, #rgb_to_hex, #set_parent, #to_html

Methods included from Shoes::Log

configure_logger, #log_init, logger

Methods inherited from Shoes::Linkable

#bind_shoes_event, #send_self_event, #send_shoes_event, #unsub_shoes_event

Constructor Details

#initialize(properties) ⇒ WebviewListBox

Returns a new instance of WebviewListBox.



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# File 'lib/scarpe/wv/list_box.rb', line 7

def initialize(properties)
  super(properties)

  # The JS handler sends a "change" event, which we forward to the Shoes widget tree
  bind("change") do |new_item|
    send_self_event(new_item, event_name: "change")
  end
end

Instance Attribute Details

#height ⇒ Object (readonly)

Returns the value of attribute height.



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# File 'lib/scarpe/wv/list_box.rb', line 5

def height
  @height
end

#items ⇒ Object (readonly)

Returns the value of attribute items.



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# File 'lib/scarpe/wv/list_box.rb', line 5

def items
  @items
end

#selected_item ⇒ Object (readonly)

Returns the value of attribute selected_item.



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# File 'lib/scarpe/wv/list_box.rb', line 5

def selected_item
  @selected_item
end

#width ⇒ Object (readonly)

Returns the value of attribute width.



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# File 'lib/scarpe/wv/list_box.rb', line 5

def width
  @width
end

Instance Method Details

#element ⇒ Object 



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# File 'lib/scarpe/wv/list_box.rb', line 24

def element
  onchange = handler_js_code("change", "this.options[this.selectedIndex].value")

  select_attrs = { id: html_id, onchange: onchange, style: style }
  option_attrs = { value: nil, selected: false }

  HTML.render do |h|
    h.select(**select_attrs) do
      items.each do |item|
        h.option(**option_attrs, value: item, selected: (item == selected_item)) { item }
      end
    end
  end
end

#properties_changed(changes) ⇒ Object 



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# File 'lib/scarpe/wv/list_box.rb', line 16

def properties_changed(changes)
  selected = changes.delete("selected_item")
  if selected
    html_element.value = selected
  end
  super
end

#style ⇒ Object (protected) 



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# File 'lib/scarpe/wv/list_box.rb', line 41

def style
  styles = super

  styles[:height] = Dimensions.length(height) if height
  styles[:width] = Dimensions.length(width) if width

  styles
end