I think I found a bug: After removing a child from a ListPanel, focusedChild fires twice.

Archived
1

If I remove two children, focusedChild fires three times. Here is my example:


sub init()
  m.top.overhang.showOptions = true
  m.top.overhang.optionsAvailable = true
  m.top.overhang.optionsText = "Delete"

  m.categoriespanel = m.top.panelSet.createChild("CategoriesListPanel")
  m.categoryinfopanel = m.top.panelSet.createChild("CategoryInfoPanel")
  m.readContentTask = createObject("roSGNode", "ContentReader")
  m.readContentTask.contenturi = "http://www.sdktestinglab.com/Tutorial/content/panelsetcontent.xml"
  m.readContentTask.observeField("content", "setcategories")
  m.readContentTask.control = "RUN"  
  m.categoriespanel.setFocus(true)
end sub
 
sub setcategories()
  m.categoriespanel.list.content = m.readContentTask.content
  m.categoriespanel.list.observeField("itemFocused", "show_example_preview") 
  m.categoryinfopanel.observeField("focusedChild", "view_example")
end sub
  
sub show_example_preview()
  m.top.overhang.optionsAvailable = true
  selected_example = m.categoriespanel.list.content.getChild(m.categoriespanel.list.itemFocused)  
  m.categoryinfopanel.description = selected_example.description  
end sub 

sub view_example()
  if not m.top.panelSet.isGoingBack then
    selected_example = m.categoriespanel.list.content.getChild(m.categoriespanel.list.itemFocused)
    m.top.overhang.visible = false
    m.top.panelset.visible = false    
    if (m.exampleviewerpanel <> invalid) then
        m.top.removeChild(m.exampleviewerpanel)
        m.exampleviewerpanel = invalid
    end if
    '!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
    print "Create Poster"
    '!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
    m.exampleviewerpanel = invalid
    m.exampleviewerpanel = createObject("roSGNode", "SomePoster")
    m.top.appendChild(m.exampleviewerpanel)
    m.exampleviewerpanel.setFocus(true)
  else    
    m.top.overhang.visible = true
    m.top.panelset.visible = true    
    m.categoriespanel.setFocus(true)
  end if 
end sub

function onKeyEvent(key as String, press as Boolean) as Boolean
  if press then
    if (key = "back") then
      print "pressed back"
      if (m.exampleviewerpanel <> invalid) then
        m.top.removeChild(m.exampleviewerpanel)
        m.exampleviewerpanel = invalid
        m.top.overhang.visible = true
        m.top.panelset.visible = true
        m.categoriespanel.setFocus(true)
        return true
      end if
    else if (key = "options") and (m.top.overhang.optionsAvailable) then
      ' ask if to delete or edit example
      adialog = invalid
      adialog = createObject("roSGNode", "Dialog")
      adialog.title = "Delete ?"
      adialog.buttons = ["Delete", "Cancel" ]
      adialog.observeField("buttonSelected", "editdeleteexample")
      m.top.dialog = adialog    
      return true
    end if
  end if
  return false
end function

sub editdeleteexample()
  selected_example = m.categoriespanel.list.content.getChild(m.categoriespanel.list.itemFocused)
  if m.top.dialog.buttonSelected = 0 then ' delete
    ' do not delete here, ask for a pin first
    m.categoriespanel.list.content.removeChild(selected_example)
  end if
  m.top.dialog.close = true
end sub

If you run it, press OK on the remote, you will get one message print “Create Poster”. If you press Options and delete an item and then press OK, print “Create Poster” will show twice.
Is this a bug or I need to do something else when I try to delete a child from a ListPanel?

Here is the whole code in a zip:
https://www.dropbox.com/s/jzzw6efuls2a3lh/ListPanel-test.zip?dl=0

EDIT: It seems that I don’t even have to delete a child. Just refreshing the ListPanel, reloading the content will double/triple fire focusedChild event.

2

“ioan” wrote:
EDIT: It seems that I don’t even have to delete a child. Just refreshing the ListPanel, reloading the content will double/triple fire focusedChild event.
is that bad?
i.e. how is that harmful to you

3

“EnTerr” wrote:

“ioan” wrote:
EDIT: It seems that I don’t even have to delete a child. Just refreshing the ListPanel, reloading the content will double/triple fire focusedChild event.
is that bad?
i.e. how is that harmful to you

m.exampleviewerpanel = createObject("roSGNode", "SomePoster")

The m.exampleviewerpanel that I create starts a Task on it that receives stream from a camera… so the Task gets created twice, or 3 times… and only the last one terminates when I signal it to terminate. Of course I “fixed it” by making sure that I only create the m.exampleviewerpanel once and ignore the other calls… but it should be called just once, don’t you think?

4

“ioan” wrote:
… I “fixed it” by making sure that I only create the m.exampleviewerpanel once and ignore the other calls… but it should be called just once, don’t you think?
When dealing with RSG, seems to me that the less one thinks or assumes - the better.

Off topic:
…
I also tried m.save.checkedlist.Append(a) and to push each element separately, but I always get error. What’s the right way to do this?
The right way is to open a new topic on this one :mrgreen: - after all we may keep tackling the double-event here.
Could be couple of issues, since i saw a peripheral one.

5

“EnTerr” wrote:

The right way is to open a new topic on this one :mrgreen: - after all we may keep tackling the double-event here.
Could be couple of issues, since i saw a peripheral one.

Edited my prev. comment and got rid of the off-topic question and posted it in a new thread.