Re: How to set focus on a text view when tree selection changed?

[kenny wang <smartkenny gmail com>]

Hi, Milosz

Thank you for reply. Your solution made focus on textview, but it's not convenient for users: they have to select the row by left clicking and then right clicking. Is there a way to do both of them? I want the user click once on the row by left button, the row is selected and then focus turns to textview.

Hope for better solutions.

Kenny

On Mon, Mar 8, 2010 at 4:11 AM, Milosz Derezynski <internalerror gmail com> wrote:

Hmm I haven't written Gtk+ code for a while and I seem to be forgetting things. I had the impression that "changed" was a signal with a bool return value, but it turns out that's not the case.

OK anyway, here's what you've got to do: Connect to the _TreeView's_ "button-press-event" (http://library.gnome.org/devel/pygtk/stable/class-gtkwidget.html#signal-gtkwidget--button-press-event) and check for the button being the right mouse button in the event passed into (see here http://library.gnome.org/devel/pygtk/stable/class-gdkevent.html under "gtk.gdk.BUTTON_PRESS", I can not link directly). The numerical value for the right mouse button is 3.

And this time:

* Make sure this time you do NOT connect_after, but just connect

and:

* Return "True" from your handler, so that the TreeView itself doesn't process the button press and changes the selection

HTH :)

Milosz

On Mon, Mar 8, 2010 at 2:57 AM, smartkenny <smartkenny gmail com> wrote:

Hello, Milosz

Thank you for answer my question. But it doesn't work. Here's my program:


#!/usr/bin/env python

import pygtk
pygtk.require('2.0')
import gtk


def wrap(widget):
  sw = gtk.ScrolledWindow()
  sw.add(widget)
  sw.set_policy(gtk.POLICY_AUTOMATIC, gtk.POLICY_AUTOMATIC)
  sw.set_shadow_type(gtk.SHADOW_ETCHED_IN)
  sw.set_border_width(1)
  return sw



def on_selection_changed(selection):
  selection.get_tree_view().grab_focus()


if __name__ == "__main__":
  paned = gtk.HPaned()
    treestore = gtk.TreeStore(str)
  new_iter = treestore.append(None)
  treestore.set(new_iter, 0, '00000')
  new_iter = treestore.append(None)
  treestore.set(new_iter, 0, '11111')
  new_iter = treestore.append(None)
  treestore.set(new_iter, 0, '22222')
  new_iter = treestore.append(None)
  treestore.set(new_iter, 0, '33333')
  new_iter = treestore.append(None)
  treestore.set(new_iter, 0, '44444')
    treeview = gtk.TreeView(treestore)
  treeview.set_enable_search(False)
  treeview.get_selection().connect_after('changed', on_selection_changed)
  column = gtk.TreeViewColumn();
  renderer = gtk.CellRendererText()
  column.pack_start(renderer, False)
  column.add_attribute(renderer, 'text', 0)
  treeview.append_column(column)
  paned.add1(wrap(treeview))
    textview = gtk.TextView()
  paned.add2(wrap(textview))
  paned.set_position(250)
    window = gtk.Window(gtk.WINDOW_TOPLEVEL)
  window.set_default_size(800, 600)
  window.add(paned)
  window.show_all()
    gtk.main()


Thank you!

Kenny

Milosz Derezynski wrote:

You need to get the TreeSelection from the TreeView and connect to that's "changed" signal, and make sure you connect_after.

Sent from my iPod

On 07.03.2010, at 19:25, smartkenny <smartkenny gmail com> wrote:

Hi, all

Searched for a long time but didn't find any hints on this. Here's my layout:

-------------------------
|           |           |
| tree view | text view |
|           |           |
-------------------------

When clicked on a tree view row, I am going to change text in text view accordingly AND let text view grab focus, so that whenever I press keys it put characters into the text view.

I tried to connect "changed" on tree view and grab focus on text view, but it didn't work, the focus is still on tree view. So when I press keys it doesn't put into the text view.

Can any body please give me a clue how to do this? Thank you very much.

Kenny

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