Class: Glimmer::DataBinding::TreeItemsBinding

Inherits:
Object
  • Object
show all
Includes:
Observable, Observer
Defined in:
lib/glimmer/data_binding/tree_items_binding.rb

Instance Method Summary collapse

Methods included from Observer

#add_dependent, #dependents, #dependents_for, proc, #register, #registration_for, #registrations, #remove_dependent, #unregister, #unregister_all_observables, #unregister_dependents_with_observable

Methods included from Observable

#add_observer, #remove_observer

Constructor Details

#initialize(parent, model_binding, tree_properties) ⇒ TreeItemsBinding

Returns a new instance of TreeItemsBinding.



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# File 'lib/glimmer/data_binding/tree_items_binding.rb', line 16

def initialize(parent, model_binding, tree_properties)
  @tree = parent
  @model_binding = model_binding
  @tree_properties = [tree_properties].flatten.first.to_h
  call(@model_binding.evaluate_property)
  model = model_binding.base_model
  observe(model, model_binding.property_name_expression)
  @tree.on_widget_disposed do |dispose_event|
    unregister_all_observables
  end
end

Instance Method Details

#call(model_tree_root_node = nil) ⇒ Object 



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# File 'lib/glimmer/data_binding/tree_items_binding.rb', line 28

def call(model_tree_root_node=nil)
  if model_tree_root_node and model_tree_root_node.respond_to?(@tree_properties[:children])
    observe(model_tree_root_node, @tree_properties[:text])
    observe(model_tree_root_node, @tree_properties[:children])
    @model_tree_root_node = model_tree_root_node
  end
  populate_tree(@model_tree_root_node, @tree, @tree_properties)
end

#populate_tree(model_tree_root_node, parent, tree_properties) ⇒ Object 



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# File 'lib/glimmer/data_binding/tree_items_binding.rb', line 37

def populate_tree(model_tree_root_node, parent, tree_properties)
  parent.swt_widget.removeAll
  populate_tree_node(model_tree_root_node, parent.swt_widget, tree_properties)
end

#populate_tree_node(model_tree_node, parent, tree_properties) ⇒ Object 



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# File 'lib/glimmer/data_binding/tree_items_binding.rb', line 42

def populate_tree_node(model_tree_node, parent, tree_properties)
  table_item = TreeItem.new(parent, SWT::SWTProxy[:none])
  table_item.setText((model_tree_node && model_tree_node.send(tree_properties[:text])).to_s)
  [model_tree_node && model_tree_node.send(tree_properties[:children])].flatten.to_a.compact.each do |child|
    observe(child, @tree_properties[:text])
    populate_tree_node(child, table_item, tree_properties)
  end
end