fxruby-users

[Fxruby-users] Disconnecting Foxtails Elements

[Will M. <wi...@co...>]

Hi, This question is mostly for Joel VanderWerf, but if any one else has any
ideas please jump in.

The question is how to cancel the observation of a variable in a Foxtails
element? As you can see in the included code below, (Yes its the same code I
included in my other message today.) I am adding several FTTextFields to
watch some variables in another object.

The object I wish to observe changes from time to time so these fields need
to be added dynamically. So the specific question is: when I stop observing
one object and start observing a new object what do I need to do to clean up
the observations on the old object?

In the Observable library that you wrote there are cancel_when_* methods
that do this job, what are the equivilent methods for Foxtails?

Thanks,
	--Will


==================== begin include =================
#!/usr/bin/env ruby

require 'fox'
require 'fox/responder'
require 'observable'
require 'foxtails'

include Fox
include Observable
include FoxTails

class ObjectInspector
  include Responder

  extend Observable

  def initialize(app, proj)
    @targetObject = nil
    createWindow(app, proj)
  end

  def createWindow(app, proj)
    @app = app
    @project = proj

    @inspectordlg = FXDialogBox.new(app, "Inspector",
      DECOR_BORDER|DECOR_RESIZE|DECOR_TITLE, 0, 0, 150, 300)

    @matrix = FXMatrix.new(@inspectordlg, 2,
      MATRIX_BY_COLUMNS|LAYOUT_FILL_X)

  end

  def clear()
    @matrix.hide
  end

  def set(newobj)
    @targetObject = newobj

    @matrix = FXMatrix.new(@propertyFrame, 2,
      MATRIX_BY_COLUMNS|LAYOUT_FILL_X)

    # First row
    FXLabel.new(@matrix, "Property", nil, LAYOUT_FILL_COLUMN)
    FXLabel.new(@matrix, "Value", nil, LAYOUT_FILL_COLUMN)

    # First row
    FXLabel.new(@matrix, "Type", nil, LAYOUT_FILL_COLUMN)
    FXLabel.new(@matrix, @targetObject.name, nil, LAYOUT_FILL_COLUMN)

    FXLabel.new(@matrix, "Left", nil, LAYOUT_FILL_COLUMN)
    FTTextField.new(@matrix, 17, @targetObject, :left,
      FRAME_SUNKEN|LAYOUT_FILL_COLUMN)

    FXLabel.new(@matrix, "Right", nil, LAYOUT_FILL_COLUMN)
    FTTextField.new(@matrix, 17, @targetObject, :right,
      FRAME_SUNKEN|LAYOUT_FILL_COLUMN)

    FXLabel.new(@matrix, "Top", nil, LAYOUT_FILL_COLUMN)
    FTTextField.new(@matrix, 17, @targetObject, :top,
      FRAME_SUNKEN|LAYOUT_FILL_COLUMN)

    FXLabel.new(@matrix, "Bottom", nil, LAYOUT_FILL_COLUMN)
    FTTextField.new(@matrix, 17, @targetObject, :bottom,
      FRAME_SUNKEN|LAYOUT_FILL_COLUMN)

    @inspectordlg.create
    @inspectordlg.show

#    @inspectordlg.update
#    @inspectordlg.repaint

    @inspectordlg.resize(@inspectordlg.width + 1, @inspectordlg.height)
    @inspectordlg.resize(@inspectordlg.width - 1, @inspectordlg.height)

  end

  # Close the Inspector Windows
  def close
    @inspectordlg.hide
  end

  # Create and show the main window
  def create
    # Create the windows
    @inspectordlg.create
    @inspectordlg.show(PLACEMENT_DEFAULT)
  end
end
===================== end include ==================

Re: [Fxruby-users] Disconnecting Foxtails Elements

[Joel V. <vj...@PA...>]

Will Merrell wrote:
> In the Observable library that you wrote there are cancel_when_* methods
> that do this job, what are the equivilent methods for Foxtails?

That's a good question. I think it can be done with the latest versions 
of Observable and FoxTails, and I will come up with a simple example...

-- 
Joel VanderWerf                          California PATH, UC Berkeley
mailto:vj...@pa...                     Ph. (510) 231-9446
http://www.path.berkeley.edu                       FAX (510) 231-9565

Re: [Fxruby-users] Disconnecting Foxtails Elements

[Joel V. <vj...@PA...>]

Joel VanderWerf wrote:
> Will Merrell wrote:
> 
>> In the Observable library that you wrote there are cancel_when_* methods
>> that do this job, what are the equivilent methods for Foxtails?
> 
> 
> That's a good question. I think it can be done with the latest versions 
> of Observable and FoxTails, and I will come up with a simple example...
> 

Short answer: use #retarget. This is a method of all the FTTargeted 
widgets. Sorry about the docs...

Long answer below. This will be in the examples dir in the next FoxTails 
release.

==== disconnect.rb ====
#!/usr/bin/env ruby

require 'foxtails'

include Fox
include FoxTails

class MainWindow < FXMainWindow
   observable :data, :t2, :t3

   def initialize(*args)
     super

     self.t2 = true
     self.t3 = true

     frame = FXVerticalFrame.new(self)

     f1 = FXHorizontalFrame.new(self)
     FXLabel.new(f1, "One", nil, LAYOUT_FIX_WIDTH).width = 50
     @text1 = FTTextField.new(f1, 60, self, :data)
     @text1.dynamic = true

     f2 = FXHorizontalFrame.new(self)
     FXLabel.new(f2, "Two", nil, LAYOUT_FIX_WIDTH).width = 50
     @text2 = FTTextField.new(f2, 60, self, :data)
     @text2.dynamic = true
     @check2 = FTCheckButton.new(f2, "connected to One", self, :t2)
     when_t2 CHANGES do |val|
       @text2.retarget(val ? self : nil)
     end

     f3 = FXHorizontalFrame.new(self)
     FXLabel.new(f3, "Three", nil, LAYOUT_FIX_WIDTH).width = 50
     @text3 = FTTextField.new(f3, 60, self, :data)
     @text3.dynamic = true
     @check3 = FTCheckButton.new(f3, "connected to One", self, :t3)
     when_t3 CHANGES do |val|
       @text3.retarget(val ? self : nil)
     end

   end

   def create
     super
     show(PLACEMENT_OWNER)
   end
end

class TestApp < FTApp
   def initialize
     super("Test", "TEST")
     MainWindow.new(self, "Test")
   end
end

TestApp.new.run