CODEWITHSUNDEEP
listboxgtkvala
Levi
Levi

Reputation: 317

How can I update Gtk.ListBox dynamically?

So I have a listbox:

var listbox = new Gtk.ListBox();

var l = new Watcher.ListItem.NewItem("title","subtitle", "etc");
listbox.insert(l, 0);

"l" is basically a Gtk.ListBoxRow with formated labels and stuff.

I added a button with label "New" which purpose is to add new items into the ListBox.

int i = 1;
back_new.clicked.connect( ()=>{
    l = new Watcher.ListItem.NewItem("title2", "subtitle2", "etc2");
    listbox.insert(l, i);
    i++;
});

The problem is if I check with "listbox.get_row_at_index(2)" it shows that there is something in the listbox so something happens but the listbox in the gui is not updated.

Full code is here if needed: http://pastebin.com/u/Levike

Upvotes: 2

Views: 6497

Answers (5)

bzimage
bzimage

Reputation: 71

listbox.show_all() fixes my issue too.

my code was:

fist remove all items from listbox:

for row in self.gruppi_rows:
     self.listboxGrp.remove(row)

then put some other objects in listbox, as following, but no content was showed in the list box:

     row = Gtk.ListBoxRow()
     self.count+=1
     cbutton=Gtk.CheckButton(name)
     flag1=self.radiobuttonSelectAll.get_active() 
     flag2=self.radiobuttonSelectNone.get_active() 
     box = Gtk.Box(orientation=Gtk.Orientation.HORIZONTAL, spacing=10)
     cbutton.set_active(flag1)
     box.pack_start(cbutton, True, True, 0)
     row.add(box)
     self.listboxGrp.add(row)

adding following line at the end fixes the problem:

     self.listboxGrp.show_all()

Upvotes: 0

Levi
Levi

Reputation: 317

listbox.show_all() fixes my issue.

Upvotes: 10

luciomrx
luciomrx

Reputation: 1195

it works for me. Anyway, yeah use Gtk.TreeView with 5 columns. 4 of them using Gtk.CellRendererText and 1 of them use Gtk.CellRendererPixbuf. Create a ListStore model, and get it from there so you can change the contain of the list anytime and just refresh it by calling "set_model". And by the way, set Gtk.TreeView property "headers-visible" to False, and voila, you get a markup Gtk.ListBox

Upvotes: 0

luciomrx
luciomrx

Reputation: 1195

Personally i would assume a Gtk.ListBoxRow is like iter in Gtk.TreeModel even though it's a Gtk.Container. You can skip adding a widget into ListBoxRow (straight to ListBox), and it will automatically a ListBoxRow for you whether you like it or not. Maybe it's a bug (maybe...), maybe the devs should implement a model with Gtk.ListBox, but for now, just use Gtk.Container.add () everytime you want to append something inside Gtk.ListBox. In your code:

int i = 1;
back_new.clicked.connect( ()=>{
l = new Watcher.ListItem.NewItem("title2", "subtitle2", "etc2");
listbox.insert(l, i);
i++;
});
# change to listbox.add (the widget...not the listboxrow widget) and it will show

the thing about Gtk.ListBox, it is a container where you can filter and sort the children inside, also to "stuffed" complicated list's children easier (Gtk.TreeView only uses Gtk.CellRenderer ).

If you do not want that, i don't think you should use it, or not until next release.

Upvotes: 0

manuBriot
manuBriot

Reputation: 2715

In other languages using gtk, I would do a l.show() to make sure the item becomes visible. Perhaps the same here ?

Upvotes: 0

Related Questions