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/////////////////////////////////////////////////////////////////////////
// Copyright (c) 2011-2015 by Simon Schneegans
//
// 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 3 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/>.
/////////////////////////////////////////////////////////////////////////
namespace GnomePie {
/////////////////////////////////////////////////////////////////////
/// An ActionGroup which contains all currently plugged-in devices,
/// such as CD-ROM's or USB-sticks.
/////////////////////////////////////////////////////////////////////
public class DevicesGroup : ActionGroup {
/////////////////////////////////////////////////////////////////////
/// Used to register this type of ActionGroup. It sets the display
/// name for this ActionGroup, it's icon name and the string used in
/// the pies.conf file for this kind of ActionGroups.
/////////////////////////////////////////////////////////////////////
public static GroupRegistry.TypeDescription register() {
var description = new GroupRegistry.TypeDescription();
description.name = _("Group: Devices");
description.icon = "drive-harddisk";
description.description = _("Shows a Slice for each plugged in devices, like USB-Sticks.");
description.id = "devices";
return description;
}
/////////////////////////////////////////////////////////////////////
/// Two members needed to avoid useless, frequent changes of the
/// stored Actions.
/////////////////////////////////////////////////////////////////////
private bool changing = false;
private bool changed_again = false;
/////////////////////////////////////////////////////////////////////
/// The VolumeMonitor used to check for added or removed devices.
/////////////////////////////////////////////////////////////////////
private GLib.VolumeMonitor monitor;
/////////////////////////////////////////////////////////////////////
/// C'tor, initializes all members.
/////////////////////////////////////////////////////////////////////
public DevicesGroup(string parent_id) {
GLib.Object(parent_id : parent_id);
}
/////////////////////////////////////////////////////////////////////
/// Construct block loads all currently plugged-in devices and
/// connects signal handlers to the VolumeMonitor.
/////////////////////////////////////////////////////////////////////
construct {
this.monitor = GLib.VolumeMonitor.get();
this.load();
// add monitor
this.monitor.mount_added.connect(this.reload);
this.monitor.mount_removed.connect(this.reload);
}
/////////////////////////////////////////////////////////////////////
/// Loads all currently plugged-in devices.
/////////////////////////////////////////////////////////////////////
private void load() {
// add root device
this.add_action(new UriAction(_("Root"), "drive-harddisk", "file:///"));
// add all other devices
foreach(var mount in this.monitor.get_mounts()) {
// get icon
var icon = mount.get_icon();
this.add_action(new UriAction(mount.get_name(), Icon.get_icon_name(icon), mount.get_root().get_uri()));
}
}
/////////////////////////////////////////////////////////////////////
/// Reloads all devices. Is called when the VolumeMonitor changes.
/////////////////////////////////////////////////////////////////////
private void reload() {
// avoid too frequent changes...
if (!this.changing) {
this.changing = true;
Timeout.add(200, () => {
if (this.changed_again) {
this.changed_again = false;
return true;
}
// reload
message("Devices changed...");
this.delete_all();
this.load();
this.changing = false;
return false;
});
} else {
this.changed_again = true;
}
}
}
}
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