Re: paste the clipboard over gtktreeview

[muppet <scott asofyet org>]

On May 25, 2008, at 2:40 PM, anguila wrote:

> How can I paste the clipboard (with Control + V) over a gtktreeview  
> widget (list) ?
> Any idea?

So far as i know, you create a key binding (e.g. with a menu item),  
and then in the handler for that command, pull data from the clipboard  
and do the appropriate list insertions.

Instead of spamming the message with lots of boilerplate code to set  
up the accelerators and all that, here's a bunch of GtkBuilder XML.   
The interesting part is the on_paste() callback, near the end, which  
just grabs the clipboard contents as plain text, splits by whitespace,  
and inserts each item as its own line.  In a real app, you'd do more  
appropriate parsing and marshaling and whatnot.


#!/usr/bin/env perl

use strict;
use warnings;
use Glib ':constants';
use Gtk2 -init;
use Gtk2::SimpleList;

#
# Gtk2::Builder is cool.  Now we can express the shortcuts and menu  
items
# and all that as data instead of as tedious code.
#
my $interface = '<interface>
  <object class="GtkUIManager" id="uimanager">
    <child>
      <object class="GtkActionGroup" id="actions">
        <child>
          <object class="GtkAction" id="file-menu">
            <property name="label">_File</property>
          </object>
        </child>
        <child>
          <object class="GtkAction" id="quit">
            <property name="stock-id">gtk-quit</property>
            <signal name="activate" handler="on_quit" />
          </object>
        </child>
        <child>
          <object class="GtkAction" id="paste">
            <property name="stock-id">gtk-paste</property>
            <signal name="activate" handler="on_paste" />
          </object>
        </child>
        <child>
          <object class="GtkAction" id="clear">
            <property name="stock-id">gtk-delete</property>
            <signal name="activate" handler="on_clear" />
          </object>
        </child>
      </object>
    </child>
    <ui>
      <menubar name="menubar">
        <menu action="file-menu">
          <menuitem action="paste"/>
          <menuitem action="clear"/>
          <menuitem action="quit"/>
        </menu>
      </menubar>
    </ui>
  </object>
  <object class="GtkWindow" id="window">
    <property name="default-width">250</property>
    <property name="default-height">500</property>
    <signal name="destroy" handler="on_window_destroy" />
    <child>
      <object class="GtkVBox" id="vbox">
        <child>
          <object class="GtkMenu" constructor="uimanager"  
id="menubar" />
          <packing>
            <property name="expand">false</property>
          </packing>
        </child>
        <child>
          <object class="GtkScrolledWindow" id="scroller">
            <property name="hscrollbar-policy">automatic</property>
            <property name="vscrollbar-policy">automatic</property>
            <child>
              <object class="GtkTreeView" id="treeview">
                <property name="headers-visible">false</property>
              </object>
            </child>
          </object>
        </child>
      </object>
    </child>
  </object>
</interface>';


my $builder = Gtk2::Builder->new ();
$builder->add_from_string ($interface);
$builder->connect_signals ();

my $slist = Gtk2::SimpleList->new_from_treeview (
        $builder->get_object ('treeview'),
        Words => 'text',
);


$builder->get_object ('window')->show_all;

Gtk2->main;


sub on_window_destroy { Gtk2->main_quit }
sub on_quit { $builder->get_object ('window')->destroy; }

#
# Here's the interesting part.
#
sub on_paste {
    my $clipboard = Gtk2::Clipboard->get_for_display
                ($builder->get_object ('window')->get_display (),
                 Gtk2::Gdk->SELECTION_PRIMARY);

    my $text = $clipboard->wait_for_text ();

    foreach (split /\s+/, $text) {
        push @{ $slist->{data} }, $_ if length;
    }
}

sub on_clear {
    @{ $slist->{data} } = ();
}

__END__


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