Class: Nobbie::Wx::Command::ComponentAwareCommand

Inherits:
Object
  • Object
show all
Defined in:
lib/nobbie/wx/command.rb

Overview

:nodoc:

Instance Method Summary collapse

Constructor Details

#initialize(path) ⇒ ComponentAwareCommand

Returns a new instance of ComponentAwareCommand.


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# File 'lib/nobbie/wx/command.rb', line 6

def initialize(path)
  @path = path
end

Instance Method Details

#component ⇒ Object 


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# File 'lib/nobbie/wx/command.rb', line 10

def component
  @component ||= @path.find_component
end

#ensure_enabled(id = nil) ⇒ Object 


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# File 'lib/nobbie/wx/command.rb', line 24

def ensure_enabled(id = nil)
  #is_enabled takes an id for menu's
  enabled = id.nil? ? component.is_enabled : component.is_enabled(id)

  Kernel.raise(ComponentDisabledException,
    "cannot: #{describe} because component is disabled") unless enabled
end

#handle_unsupported_operation_for_component ⇒ Object 


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# File 'lib/nobbie/wx/command.rb', line 14

def handle_unsupported_operation_for_component
  Kernel.raise(UnsupportedOperationForComponentException,
    "cannot: #{describe} because component #{component.class} does not support it")
end

#handle_value_not_found ⇒ Object 


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# File 'lib/nobbie/wx/command.rb', line 19

def handle_value_not_found
  Kernel.raise(ValueNotFoundException,
    "cannot: #{describe} because value #{@value} not found")
end

#highlight(component = component) ⇒ Object 


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# File 'lib/nobbie/wx/command.rb', line 32

def highlight(component = component)
  Kernel.raise "highlight requires a block" unless block_given?

  begin
    unless [Menu, Panel].include?(component.class)
      original_colour = component.background_colour
      component.background_colour = Colour.from_hex('#FFFF00')
      component.update
    end
    result = yield component
    unless component.is_a?(Menu)
      component.update
    end
    return result
  ensure
    unless [Menu, Panel].include?(component.class)
      component.background_colour = original_colour
      component.refresh
    end
  end
end