Class: DbGui::Presenter::DbPresenter

Inherits:
Object
  • Object
show all
Includes:
Glimmer::DataBinding::ObservableModel
Defined in:
app/db_gui/presenter/db_presenter.rb

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize ⇒ DbPresenter

Returns a new instance of DbPresenter.



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# File 'app/db_gui/presenter/db_presenter.rb', line 11

def initialize
  @new_db = Model::Db.new
  @dbs = [@new_db]
  @selected_db = @new_db
  load_db_config
  selected_db.connect
end

Instance Attribute Details

#dbs ⇒ Object

Returns the value of attribute dbs.



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# File 'app/db_gui/presenter/db_presenter.rb', line 9

def dbs
  @dbs
end

#new_db ⇒ Object

Returns the value of attribute new_db.



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# File 'app/db_gui/presenter/db_presenter.rb', line 9

def new_db
  @new_db
end

#selected_db ⇒ Object

Returns the value of attribute selected_db.



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# File 'app/db_gui/presenter/db_presenter.rb', line 9

def selected_db
  @selected_db
end

Instance Method Details

#delete ⇒ Object 



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# File 'app/db_gui/presenter/db_presenter.rb', line 50

def delete
  dbs.delete(selected_db)
  self.selected_db_name = new_db.name
end

#load_db_config ⇒ Object 



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# File 'app/db_gui/presenter/db_presenter.rb', line 66

def load_db_config
  db_config_yaml = File.read(FILE_DB_CONFIGS)
  db_config = YAML.load(db_config_yaml)
  db_config[:dbs].each do |db_config|
    db = Model::Db.new
    db_config.each do |attribute, value|
      db.send("#{attribute}=", value)
    end
    self.dbs << db
  end
  self.selected_db_name = db_config[:selected_db_name]
rescue => e
  puts "No database configurations stored yet. #{e.message}"
end

#new ⇒ Object 



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# File 'app/db_gui/presenter/db_presenter.rb', line 46

def new
  self.selected_db_name = new_db.name
end

#newable ⇒ Object 



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# File 'app/db_gui/presenter/db_presenter.rb', line 19

def newable
  selected_db != new_db
end

#save ⇒ Object 



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# File 'app/db_gui/presenter/db_presenter.rb', line 33

def save
  if selected_db == new_db && selected_db.name != Model::Db::NAME_NEW
    saved_db = new_db.clone
    new_db.reset
    dbs << saved_db # this will trigger an update to the combobox items
    self.selected_db_name = saved_db.name
  else
    notify_observers(:dbs)
    self.selected_db_name = selected_db.name
  end
  save_config
end

#save_config ⇒ Object 



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# File 'app/db_gui/presenter/db_presenter.rb', line 55

def save_config
  dbs_attributes = dbs.reject {|db| db.name == Model::Db::NAME_NEW }.map(&:to_h)
  selected_db_name
  db_config = {
    selected_db_name:,
    dbs: dbs_attributes,
  }
  db_config_yaml = YAML.dump(db_config)
  File.write(FILE_DB_CONFIGS, db_config_yaml)
end

#selected_db_name ⇒ Object 



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# File 'app/db_gui/presenter/db_presenter.rb', line 23

def selected_db_name
  selected_db.name
end

#selected_db_name=(db_name) ⇒ Object 



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# File 'app/db_gui/presenter/db_presenter.rb', line 27

def selected_db_name=(db_name)
  self.selected_db = dbs.find { |db| db.name == db_name }
  notify_observers(:newable)
  save_config
end