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                 //set_type_hint(Gdk.WindowTypeHint.DESKTOP);
  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 ensure_visible()
  70         {
  71                 if (!visibility)
  72                 {
  73                         visible = true;
  74                         present();
  75                         set_skip_pager_hint(true);
  76                         set_skip_taskbar_hint(true);
  77                 }
  78         }
  79
  80         public void show_applet(string name)
  81         {
  82                 zavai.Applet applet = zavai.registry.geta(name);
  83
  84                 // Remove the current applet
  85                 if (current != null)
  86                 {
  87                         current.stop();
  88                         remove(current);
  89                         current = null;
  90                         current_name = null;
  91                 }
  92
  93                 // Add the new applet
  94                 current = applet;
  95                 current_name = name;
  96                 add(current);
  97                 current.start();
  98                 current.show_all();
  99         }
 100
 101         public void push_applet(string name)
 102         {
 103                 // Make the function idempotent
 104                 if (current_name == name)
 105                         return;
 106
 107 //stderr.printf("push applet %s -> %s\n", current_name, name);
 108                 zavai.Applet applet = zavai.registry.geta(name);
 109
 110                 // Remove the current applet
 111                 if (current != null)
 112                 {
 113 //stderr.printf("push applet remove %s\n", current_name);
 114                         applet.back_link = current_name;
 115                         current.stop();
 116                         remove(current);
 117                         current = null;
 118                         current_name = null;
 119                 }
 120
 121 //stderr.printf("push applet add %s\n", name);
 122                 // Add the new applet
 123                 current = applet;
 124                 current_name = name;
 125                 add(current);
 126                 current.start();
 127                 current.show_all();
 128         }
 129
 130         public void shutdown()
 131         {
 132         }
 133
 134         public void run()
 135         {
 136                 set_size_request(300, 500);
 137                 //fullscreen();
 138                 show_all();
 139         }
 140 }
 141 /*
 142 class Zavai(gtk.Window, zavai.Resource):
 143     def __init__(self, registry, name):
 144         super(Zavai, self).__init__()
 145         self.registry = registry
 146         self.current = None
 147         self.activate_resource("menu.main")
 148
 149     def activate_resource(self, name):
 150         widget = self.registry.resource(name)
 151         if widget is None:
 152             widget = self.registry.resource("menu.main")
 153         if isinstance(widget, gtk.Action):
 154             widget.activate()
 155         else:
 156             self.show_widget(name, widget)
 157 */
 158
 159 public abstract class Applet : Gtk.VBox, Resource
 160 {
 161         // 'label' property: label to show in window title or button names
 162         protected string _label;
 163         public string label {
 164                 get { return this._label; }
 165                 set {
 166                         if (_label != value)
 167                         {
 168                                 _label = value;
 169                                 label_changed();
 170                         }
 171                 }
 172         }
 173         public signal void label_changed();
 174
 175         // 'back_link' property: link to use to "go back". If null, do not show
 176         // a way to go back.
 177         protected AppletLink _back_link = null;
 178         public string back_link {
 179                 get { return _back_link.target; }
 180                 set {
 181 //stderr.printf("Set back link of %s to %s\n", _label, value);
 182                         if (value == null && _back_link != null)
 183                         {
 184                                 _back_link.target = value;
 185                                 remove(_back_link);
 186                         } else if (value != null) {
 187                                 if (_back_link.target == null)
 188                                 {
 189                                         _back_link.target = value;
 190                                         pack_end(_back_link, false, false, 0);
 191                                         _back_link.show();
 192                                 } else
 193                                         _back_link.target = value;
 194                         }
 195                 }
 196         }
 197
 198         public Applet()
 199         {
 200                 this.homogeneous = false;
 201                 this.spacing = 0;
 202                 _back_link = new AppletStraightLink();
 203         }
 204 /*
 205     name = gobject.property(type=str)
 206     label = gobject.property(type=str)
 207
 208     def __init__(self, registry, name, label = None):
 209         super(Applet, self).__init__()
 210
 211         self.zavai_registry = registry
 212
 213         self.props.name = name
 214         if label is None:
 215             self.props.label = zavai.default_label(name)
 216         else:
 217             self.props.label = label
 218
 219         self.back_link = zavai.LinkButton(registry, zavai.get_parent(name), _("Back"))
 220         self.pack_end(self.back_link, False, False)
 221
 222     def add(self, widget):
 223         self.pack_start(widget, True, True)
 224 */
 225
 226         public void shutdown()
 227         {
 228                 stop();
 229         }
 230
 231         public virtual void start() {}
 232         public virtual void stop() {}
 233 }
 234
 235 public class Menu : Applet
 236 {
 237         public Menu(string label)
 238         {
 239                 _label = label;
 240         }
 241
 242         public void add_applet(string target)
 243         {
 244                 pack_start(new AppletPushLink(target), false, false, 0);
 245         }
 246
 247         public void add_service_toggle(string service_name, string label_start, string label_stop)
 248         {
 249                 pack_start(new ServiceRequestLink(service_name, label_start, label_stop), false, false, 0);
 250         }
 251
 252         public void add_widget(Gtk.Widget w)
 253         {
 254                 pack_start(w, false, false, 0);
 255         }
 256 }
 257
 258 public class BigButton : Gtk.Button
 259 {
 260         public BigButton()
 261         {
 262                 set_size_request(0, zavai.config.min_button_height);
 263         }
 264 }
 265
 266 public abstract class AppletLink : BigButton
 267 {
 268         protected string _target;
 269         public string target {
 270                 get { return _target; }
 271                 set
 272                 {
 273                         if (_target != null)
 274                         {
 275                                 Applet a = zavai.registry.geta(_target);
 276                                 a.label_changed -= on_label_changed;
 277                         }
 278                         bool was_shown = _target != null;
 279                         _target = value;
 280                         if (_target != null)
 281                         {
 282                                 Applet a = zavai.registry.geta(_target);
 283                                 set_label(a.label);
 284                                 a.label_changed += on_label_changed;
 285                                 if (!was_shown) show();
 286                         } else {
 287                                 if (was_shown) hide();
 288                         }
 289                 }
 290         }
 291
 292         private void on_label_changed(Applet a)
 293         {
 294                 set_label(a.label);
 295         }
 296
 297         private abstract void on_clicked(Gtk.Button src);
 298
 299         public AppletLink(string? name = null)
 300         {
 301                 _target = null;
 302                 target = name;
 303
 304                 clicked += on_clicked;
 305         }
 306 }
 307
 308 public class AppletStraightLink : AppletLink
 309 {
 310         private override void on_clicked(Gtk.Button src)
 311         {
 312 //stderr.printf("straight link: %s\n", _target);
 313                 if (_target != null)
 314                         zavai.app.show_applet(_target);
 315         }
 316
 317         public AppletStraightLink(string? name = null)
 318         {
 319                 base(name);
 320         }
 321 }
 322
 323 public class AppletPushLink : AppletLink
 324 {
 325         private override void on_clicked(Gtk.Button src)
 326         {
 327 //stderr.printf("push link: %s\n", _target);
 328                 if (_target != null)
 329                         zavai.app.push_applet(_target);
 330         }
 331
 332         public AppletPushLink(string? name = null)
 333         {
 334                 base(name);
 335         }
 336 }
 337
 338 public class ServiceRequestLink : Gtk.ToggleButton
 339 {
 340         protected string service_name;
 341         protected string label_start;
 342         protected string label_stop;
 343
 344         private void on_toggled(Gtk.Button src)
 345         {
 346                 Service s = zavai.registry.gets(service_name);
 347                 if (get_active())
 348                         s.request("servicerequestlink");
 349                 else
 350                         s.release("servicerequestlink");
 351                 set_label(get_active() ? label_stop : label_start);
 352         }
 353
 354         public ServiceRequestLink(string service_name, string label_start, string label_stop)
 355         {
 356                 this.service_name = service_name;
 357                 this.label_start = label_start;
 358                 this.label_stop = label_stop;
 359                 set_size_request(0, zavai.config.min_button_height);
 360                 toggled += on_toggled;
 361
 362                 set_label(get_active() ? label_stop : label_start);
 363         }
 364 }
 365
 366 public class CommandButton : Gtk.Button
 367 {
 368         private string command;
 369
 370         public CommandButton(string name, string command)
 371         {
 372                 label = name;
 373                 this.command = command;
 374                 clicked += on_clicked;
 375                 set_size_request(0, zavai.config.min_button_height);
 376         }
 377
 378         public void on_clicked()
 379         {
 380                 zavai.log.info("Run program: " + command);
 381                 string[] args = command.split(" ");
 382                 Pid pid;
 383                 Process.spawn_async(
 384                         Environment.get_home_dir(),
 385                         args,
 386                         null,
 387                         SpawnFlags.SEARCH_PATH,
 388                         null,
 389                         out pid);
 390         }
 391 }
 392
 393
 394 zavai.Zavai app;
 395
 396 }