gitg/test-scrolled.vala

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Vala
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/* -*- Mode: vala; indent-tabs-mode: t; c-basic-offset: 2; tab-width: 8 -*- */
/*
* Copyright (C) 2011 Alexander Larsson <alexl@redhat.com>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
using Gtk;
using Egg;
class Row : Grid {
public int32 value;
public Row () {
value = Random.int_range (0, 10000);
var l = new Label ("Value %u".printf (value));
this.add (l);
l.show ();
}
}
public static int
compare (Widget a, Widget b) {
return (int32)(b as Row).value - (int32)(a as Row).value;
}
public static bool
filter (Widget widget) {
return (widget as Row).value % 2 == 0;
}
public static int
main (string[] args) {
int num_rows = 0;
Gtk.init (ref args);
if (args.length > 1)
num_rows = int.parse (args[1]);
if (num_rows == 0)
num_rows = 1000;
var w = new Window ();
var hbox = new Box(Orientation.HORIZONTAL, 0);
w.add (hbox);
var scrolled = new ScrolledWindow (null, null);
scrolled.set_policy (PolicyType.NEVER, PolicyType.AUTOMATIC);
hbox.add (scrolled);
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var scrolled_box = new Box(Orientation.VERTICAL, 0);
scrolled.add_with_viewport (scrolled_box);
var label = new Label ("This is \na LABEL\nwith rows");
scrolled_box.add (label);
var list = new ListBox();
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scrolled_box.add (list);
list.set_adjustment (scrolled.get_vadjustment ());
for (int i = 0; i < num_rows; i++) {
var row = new Row ();
list.add (row);
}
var vbox = new Box(Orientation.VERTICAL, 0);
hbox.add (vbox);
var b = new Button.with_label ("sort");
vbox.add (b);
b.clicked.connect ( () => {
list.set_sort_func (compare);
});
b = new Button.with_label ("filter");
vbox.add (b);
b.clicked.connect ( () => {
list.set_filter_func (filter);
});
b = new Button.with_label ("unfilter");
vbox.add (b);
b.clicked.connect ( () => {
list.set_filter_func (null);
});
w.show_all ();
Gtk.main ();
return 0;
}