Class: Sirens::ObjectBrowserModel

Inherits:
Object
  • Object
show all
Defined in:
lib/sirens/models/object_browser_model.rb

Defined Under Namespace

Classes: InstanceVariable

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize ⇒ ObjectBrowserModel

Initializing



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# File 'lib/sirens/models/object_browser_model.rb', line 6

def initialize()
    super()

    @object = ValueModel.on(nil)

    @object_instance_variables = TreeChoiceModel.new(
            selection: object,
            roots: [InstanceVariable.new(key: nil, value: object)],
            get_children_block: proc { |instance_variable|
                get_child_instance_variables_of(instance_variable.value)
            }
        )

    @text = ValueModel.on('')

    connect_models
end

Instance Attribute Details

#object ⇒ Object (readonly)

Accessors



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# File 'lib/sirens/models/object_browser_model.rb', line 31

def object
  @object
end

#object_instance_variables ⇒ Object (readonly)

Accessors



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# File 'lib/sirens/models/object_browser_model.rb', line 31

def object_instance_variables
  @object_instance_variables
end

#text ⇒ Object (readonly)

Accessors



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# File 'lib/sirens/models/object_browser_model.rb', line 31

def text
  @text
end

Instance Method Details

#connect_models ⇒ Object 



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# File 'lib/sirens/models/object_browser_model.rb', line 24

def connect_models()
    @object.add_observer(self, :on_object_changed)
    @object_instance_variables.selection.add_observer(self, :on_instance_variable_changed)
end

#get_child_instance_variables_of(object) ⇒ Object

Get the child instance variables of an object.



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# File 'lib/sirens/models/object_browser_model.rb', line 62

def get_child_instance_variables_of(object)
    if object.kind_of?(Array)
        i = -1
        object.collect{ |value|
            i += 1
            InstanceVariable.new(
                key: i,
                value: value
            )
        }
    elsif object.kind_of?(Hash)
      object.collect{ |key, value|
          InstanceVariable.new(
              key: "[#{key.inspect}]",
              value: value
          )
      }
    else
        object.instance_variables.collect{ |inst_var_name|
            InstanceVariable.new(
                key: inst_var_name,
                value: object.instance_variable_get(inst_var_name)
            )
        }
    end
end

#on_instance_variable_changed(announcement) ⇒ Object 



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# File 'lib/sirens/models/object_browser_model.rb', line 51

def on_instance_variable_changed(announcement)
    instance_variable = announcement.new_value.last

    value = instance_variable.nil? ? '' : instance_variable.value.inspect

    @text.set_value(value)
end

#on_object_changed(announcement) ⇒ Object

Events



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# File 'lib/sirens/models/object_browser_model.rb', line 43

def on_object_changed(announcement)
    new_object = announcement.new_value

    @object_instance_variables.set_tree_roots(
        [InstanceVariable.new(key: nil, value: new_object)]
    )
end

#selected_inst_var_value ⇒ Object 



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# File 'lib/sirens/models/object_browser_model.rb', line 35

def selected_inst_var_value()
    tree_selection = object_instance_variables.selection.value.last

    tree_selection.nil? ? nil : tree_selection.value
end