src/app.vala

   1 /*
   2  * app - zavai main window
   3  *
   4  * Copyright (C) 2009  Enrico Zini <enrico@enricozini.org>
   5  *
   6  * This program is free software; you can redistribute it and/or modify
   7  * it under the terms of the GNU General Public License as published by
   8  * the Free Software Foundation; either version 2 of the License, or
   9  * (at your option) any later version.
  10  *
  11  * This program is distributed in the hope that it will be useful,
  12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14  * GNU General Public License for more details.
  15  *
  16  * You should have received a copy of the GNU General Public License
  17  * along with this program; if not, write to the Free Software
  18  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  19  */
  20
  21 using GLib;
  22
  23 namespace zavai {
  24
  25 public class Zavai : Gtk.Window, zavai.Resource
  26 {
  27         public bool visibility = true;
  28         public signal void visibility_changed(bool visible);
  29
  30         zavai.Applet current;
  31         string current_name;
  32
  33         public Zavai()
  34         {
  35                 title = "Zavai";
  36                 current = null;
  37                 current_name = null;
  38                 destroy += Gtk.main_quit;
  39                 set_events(get_events() | Gdk.EventMask.VISIBILITY_NOTIFY_MASK);
  40                 visibility_notify_event += on_visibility;
  41                 set_skip_pager_hint(true);
  42                 set_skip_taskbar_hint(true);
  43
  44         }
  45
  46         private bool on_visibility(Gdk.Event event)
  47         {
  48                 visibility = (event.visibility.state == Gdk.VisibilityState.UNOBSCURED);
  49                 visibility_changed(visibility);
  50                 return true;
  51         }
  52
  53         public void toggle_visibility()
  54         {
  55                 if (visibility)
  56                 {
  57                         visible = false;
  58                         visibility = false;
  59                         visibility_changed(visibility);
  60                         //zavai.app.iconify();
  61                 } else {
  62                         visible = true;
  63                         present();
  64                         set_skip_pager_hint(true);
  65                         set_skip_taskbar_hint(true);
  66                 }
  67         }
  68
  69         public void show_applet(string name)
  70         {
  71                 zavai.Applet applet = zavai.registry.geta(name);
  72
  73                 // Remove the current applet
  74                 if (current != null)
  75                 {
  76                         current.stop();
  77                         remove(current);
  78                         current = null;
  79                         current_name = null;
  80                 }
  81
  82                 // Add the new applet
  83                 current = applet;
  84                 current_name = name;
  85                 add(current);
  86                 current.start();
  87                 current.show_all();
  88         }
  89
  90         public void push_applet(string name)
  91         {
  92 stderr.printf("push applet %s -> %s\n", current_name, name);
  93                 zavai.Applet applet = zavai.registry.geta(name);
  94
  95                 // Remove the current applet
  96                 if (current != null)
  97                 {
  98 stderr.printf("push applet remove %s\n", current_name);
  99                         applet.back_link = current_name;
 100                         current.stop();
 101                         remove(current);
 102                         current = null;
 103                         current_name = null;
 104                 }
 105
 106 stderr.printf("push applet add %s\n", name);
 107                 // Add the new applet
 108                 current = applet;
 109                 current_name = name;
 110                 add(current);
 111                 current.start();
 112                 current.show_all();
 113         }
 114
 115         public void shutdown()
 116         {
 117         }
 118
 119         public void run()
 120         {
 121                 set_size_request(300, 500);
 122                 //fullscreen();
 123                 show_all();
 124         }
 125 }
 126 /*
 127 class Zavai(gtk.Window, zavai.Resource):
 128     def __init__(self, registry, name):
 129         super(Zavai, self).__init__()
 130         self.registry = registry
 131         self.current = None
 132         self.activate_resource("menu.main")
 133
 134     def activate_resource(self, name):
 135         widget = self.registry.resource(name)
 136         if widget is None:
 137             widget = self.registry.resource("menu.main")
 138         if isinstance(widget, gtk.Action):
 139             widget.activate()
 140         else:
 141             self.show_widget(name, widget)
 142 */
 143
 144 public abstract class Applet : Gtk.VBox, Resource
 145 {
 146         // 'label' property: label to show in window title or button names
 147         protected string _label;
 148         public string label {
 149                 get { return this._label; }
 150                 set {
 151                         if (_label != value)
 152                         {
 153                                 _label = value;
 154                                 label_changed();
 155                         }
 156                 }
 157         }
 158         public signal void label_changed();
 159
 160         // 'back_link' property: link to use to "go back". If null, do not show
 161         // a way to go back.
 162         protected AppletLink _back_link = null;
 163         public string back_link {
 164                 get { return _back_link.target; }
 165                 set {
 166 stderr.printf("Set back link of %s to %s\n", _label, value);
 167                         if (value == null && _back_link != null)
 168                         {
 169                                 _back_link.target = value;
 170                                 remove(_back_link);
 171                         } else if (value != null) {
 172                                 if (_back_link.target == null)
 173                                 {
 174                                         _back_link.target = value;
 175                                         pack_end(_back_link, false, false, 0);
 176                                         _back_link.show();
 177                                 } else
 178                                         _back_link.target = value;
 179                         }
 180                 }
 181         }
 182
 183         public Applet()
 184         {
 185                 this.homogeneous = false;
 186                 this.spacing = 0;
 187                 _back_link = new AppletStraightLink();
 188         }
 189 /*
 190     name = gobject.property(type=str)
 191     label = gobject.property(type=str)
 192
 193     def __init__(self, registry, name, label = None):
 194         super(Applet, self).__init__()
 195
 196         self.zavai_registry = registry
 197
 198         self.props.name = name
 199         if label is None:
 200             self.props.label = zavai.default_label(name)
 201         else:
 202             self.props.label = label
 203
 204         self.back_link = zavai.LinkButton(registry, zavai.get_parent(name), _("Back"))
 205         self.pack_end(self.back_link, False, False)
 206
 207     def add(self, widget):
 208         self.pack_start(widget, True, True)
 209 */
 210
 211         public void shutdown()
 212         {
 213                 stop();
 214         }
 215
 216         public virtual void start() {}
 217         public virtual void stop() {}
 218 }
 219
 220 public class Menu : Applet
 221 {
 222         public Menu(string label)
 223         {
 224                 _label = label;
 225         }
 226
 227         public void add_applet(string target)
 228         {
 229 stderr.printf("menu.add_applet.packpre me %s them %s\n", _label, target);
 230                 pack_start(new AppletPushLink(target), false, false, 0);
 231 stderr.printf("menu.add_applet.packpost me %s them %s\n", _label, target);
 232         }
 233
 234         public void add_service_toggle(string service_name, string label_start, string label_stop)
 235         {
 236                 pack_start(new ServiceRequestLink(service_name, label_start, label_stop), false, false, 0);
 237         }
 238
 239         public void add_widget(Gtk.Widget w)
 240         {
 241                 pack_start(w, false, false, 0);
 242         }
 243 }
 244
 245 public class BigButton : Gtk.Button
 246 {
 247         public BigButton()
 248         {
 249                 set_size_request(0, zavai.config.min_button_height);
 250         }
 251 }
 252
 253 public abstract class AppletLink : BigButton
 254 {
 255         protected string _target;
 256         public string target {
 257                 get { return _target; }
 258                 set
 259                 {
 260                         if (_target != null)
 261                         {
 262                                 Applet a = zavai.registry.geta(_target);
 263                                 a.label_changed -= on_label_changed;
 264                         }
 265                         bool was_shown = _target != null;
 266                         _target = value;
 267                         if (_target != null)
 268                         {
 269                                 Applet a = zavai.registry.geta(_target);
 270                                 set_label(a.label);
 271                                 a.label_changed += on_label_changed;
 272                                 if (!was_shown) show();
 273                         } else {
 274                                 if (was_shown) hide();
 275                         }
 276                 }
 277         }
 278
 279         private void on_label_changed(Applet a)
 280         {
 281                 set_label(a.label);
 282         }
 283
 284         private abstract void on_clicked(Gtk.Button src);
 285
 286         public AppletLink(string? name = null)
 287         {
 288                 _target = null;
 289                 target = name;
 290
 291                 clicked += on_clicked;
 292         }
 293 }
 294
 295 public class AppletStraightLink : AppletLink
 296 {
 297         private override void on_clicked(Gtk.Button src)
 298         {
 299 stderr.printf("straight link: %s\n", _target);
 300                 if (_target != null)
 301                         zavai.app.show_applet(_target);
 302         }
 303
 304         public AppletStraightLink(string? name = null)
 305         {
 306                 base(name);
 307         }
 308 }
 309
 310 public class AppletPushLink : AppletLink
 311 {
 312         private override void on_clicked(Gtk.Button src)
 313         {
 314 stderr.printf("push link: %s\n", _target);
 315                 if (_target != null)
 316                         zavai.app.push_applet(_target);
 317         }
 318
 319         public AppletPushLink(string? name = null)
 320         {
 321                 base(name);
 322         }
 323 }
 324
 325 public class ServiceRequestLink : Gtk.ToggleButton
 326 {
 327         protected string service_name;
 328         protected string label_start;
 329         protected string label_stop;
 330
 331         private void on_toggled(Gtk.Button src)
 332         {
 333                 Service s = zavai.registry.gets(service_name);
 334                 if (get_active())
 335                         s.request("servicerequestlink");
 336                 else
 337                         s.release("servicerequestlink");
 338                 set_label(get_active() ? label_stop : label_start);
 339         }
 340
 341         public ServiceRequestLink(string service_name, string label_start, string label_stop)
 342         {
 343                 this.service_name = service_name;
 344                 this.label_start = label_start;
 345                 this.label_stop = label_stop;
 346                 set_size_request(0, zavai.config.min_button_height);
 347                 toggled += on_toggled;
 348
 349                 set_label(get_active() ? label_stop : label_start);
 350         }
 351 }
 352
 353 zavai.Zavai app;
 354
 355 }