better handling of multiple niteractive actions
[mikachu/openbox.git] / openbox / keyboard.c
1 #include "focus.h"
2 #include "screen.h"
3 #include "frame.h"
4 #include "openbox.h"
5 #include "event.h"
6 #include "grab.h"
7 #include "client.h"
8 #include "action.h"
9 #include "prop.h"
10 #include "timer.h"
11 #include "config.h"
12 #include "keytree.h"
13 #include "keyboard.h"
14 #include "translate.h"
15
16 #include <glib.h>
17
18 KeyBindingTree *keyboard_firstnode;
19
20 typedef struct {
21     guint state;
22     ObClient *client;
23     ObAction *action;
24     ObFrameContext context;
25 } ObInteractiveState;
26
27 static GSList *interactive_states;
28
29 static KeyBindingTree *curpos;
30 static ObTimer *chain_timer;
31
32 static void grab_for_window(Window win, gboolean grab)
33 {
34     KeyBindingTree *p;
35
36     ungrab_all_keys(win);
37
38     if (grab) {
39         p = curpos ? curpos->first_child : keyboard_firstnode;
40         while (p) {
41             grab_key(p->key, p->state, win, GrabModeAsync);
42             p = p->next_sibling;
43         }
44         if (curpos)
45             grab_key(config_keyboard_reset_keycode,
46                      config_keyboard_reset_state,
47                      win, GrabModeAsync);
48     }
49 }
50
51 void keyboard_grab_for_client(ObClient *c, gboolean grab)
52 {
53     grab_for_window(c->window, grab);
54 }
55
56 static void grab_keys(gboolean grab)
57 {
58     GList *it;
59
60     grab_for_window(screen_support_win, grab);
61     for (it = client_list; it; it = g_list_next(it))
62         grab_for_window(((ObClient*)it->data)->frame->window, grab);
63 }
64
65 void keyboard_reset_chains()
66 {
67     if (chain_timer) {
68         timer_stop(chain_timer);
69         chain_timer = NULL;
70     }
71     if (curpos) {
72         curpos = NULL;
73         grab_keys(TRUE);
74     }
75 }
76
77 static void chain_timeout(ObTimer *t, void *data)
78 {
79     keyboard_reset_chains();
80 }
81
82 gboolean keyboard_bind(GList *keylist, ObAction *action)
83 {
84     KeyBindingTree *tree, *t;
85     gboolean conflict;
86
87     g_assert(keylist != NULL);
88     g_assert(action != NULL);
89
90     if (!(tree = tree_build(keylist)))
91         return FALSE;
92
93     if ((t = tree_find(tree, &conflict)) != NULL) {
94         /* already bound to something, use the existing tree */
95         tree_destroy(tree);
96         tree = NULL;
97     } else
98         t = tree;
99     while (t->first_child) t = t->first_child;
100
101     if (conflict) {
102         g_warning("conflict with binding");
103         tree_destroy(tree);
104         return FALSE;
105     }
106
107     /* set the action */
108     t->actions = g_slist_append(t->actions, action);
109     /* assimilate this built tree into the main tree. assimilation
110        destroys/uses the tree */
111     if (tree) tree_assimilate(tree);
112
113     return TRUE;
114 }
115
116 void keyboard_interactive_grab(guint state, ObClient *client,
117                                ObFrameContext context, ObAction *action)
118 {
119     ObInteractiveState *s;
120
121     if (!interactive_states) {
122         if (!grab_keyboard(TRUE))
123             return;
124         if (!grab_pointer(TRUE, None)) {
125             grab_keyboard(FALSE);
126             return;
127         }
128     }
129
130     s = g_new(ObInteractiveState, 1);
131
132     s->state = state;
133     s->client = client;
134     s->action = action;
135     s->context = context;
136
137     interactive_states = g_slist_append(interactive_states, s);
138 }
139
140 gboolean keyboard_process_interactive_grab(const XEvent *e,
141                                            ObClient **client,
142                                            ObFrameContext *context)
143 {
144     GSList *it, *next;
145     gboolean handled = FALSE;
146     gboolean done = FALSE;
147     gboolean cancel = FALSE;
148
149     for (it = interactive_states; it; it = next) {
150         ObInteractiveState *s = it->data;
151
152         next = g_slist_next(it);
153         
154         *client = s->client;
155         *context = s->context;
156
157         if ((e->type == KeyRelease && 
158              !(s->state & e->xkey.state)))
159             done = TRUE;
160         else if (e->type == KeyPress) {
161             if (e->xkey.keycode == ob_keycode(OB_KEY_RETURN))
162                 done = TRUE;
163             else if (e->xkey.keycode == ob_keycode(OB_KEY_ESCAPE))
164                 cancel = done = TRUE;
165         }
166         if (done) {
167             if (s->action->func == action_cycle_windows) {
168                 s->action->data.cycle.cancel = cancel;
169                 s->action->data.cycle.final = TRUE;
170             }
171             if (s->action->func == action_desktop_dir) {
172                 s->action->data.desktopdir.cancel = cancel;
173                 s->action->data.desktopdir.final = TRUE;
174             }
175             if (s->action->func == action_send_to_desktop_dir) {
176                 s->action->data.sendtodir.cancel = cancel;
177                 s->action->data.sendtodir.final = TRUE;
178             }
179
180             s->action->func(&s->action->data);
181
182             grab_keyboard(FALSE);
183             grab_pointer(FALSE, None);
184             keyboard_reset_chains();
185
186             g_free(s);
187             interactive_states = g_slist_delete_link(interactive_states, it);
188             handled = TRUE;
189         }
190     }
191
192     return handled;
193 }
194
195 void keyboard_event(ObClient *client, const XEvent *e)
196 {
197     KeyBindingTree *p;
198
199     g_assert(e->type == KeyPress);
200
201     if (e->xkey.keycode == config_keyboard_reset_keycode &&
202         e->xkey.state == config_keyboard_reset_state)
203     {
204         keyboard_reset_chains();
205         return;
206     }
207
208     if (curpos == NULL)
209         p = keyboard_firstnode;
210     else
211         p = curpos->first_child;
212     while (p) {
213         if (p->key == e->xkey.keycode &&
214             p->state == e->xkey.state) {
215             if (p->first_child != NULL) { /* part of a chain */
216                 if (chain_timer) timer_stop(chain_timer);
217                 /* 5 second timeout for chains */
218                 chain_timer = timer_start(5000*1000, chain_timeout,
219                                           NULL);
220                 curpos = p;
221                 grab_keys(TRUE);
222             } else {
223                 GSList *it;
224                 for (it = p->actions; it; it = it->next) {
225                     ObAction *act = it->data;
226                     if (act->func != NULL) {
227                         act->data.any.c = client;
228
229                         if (act->func == action_cycle_windows)
230                         {
231                             act->data.cycle.final = FALSE;
232                             act->data.cycle.cancel = FALSE;
233                         }
234                         if (act->func == action_desktop_dir)
235                         {
236                             act->data.desktopdir.final = FALSE;
237                             act->data.desktopdir.cancel = FALSE;
238                         }
239                         if (act->func == action_send_to_desktop_dir)
240                         {
241                             act->data.sendtodir.final = FALSE;
242                             act->data.sendtodir.cancel = FALSE;
243                         }
244
245                         if (act->func == action_moveresize)
246                         {
247                             screen_pointer_pos(&act->data.moveresize.x,
248                                                &act->data.moveresize.y);
249                         }
250
251                         if ((act->func == action_cycle_windows ||
252                              act->func == action_desktop_dir ||
253                              act->func == action_send_to_desktop_dir))
254                         {
255                             keyboard_interactive_grab(e->xkey.state, client,
256                                                       0, act);
257                         }
258
259                         if (act->func == action_showmenu)
260                         {
261                             act->data.showmenu.x = e->xkey.x_root;
262                             act->data.showmenu.y = e->xkey.y_root;
263                         }
264
265                         act->data.any.c = client;
266                         act->func(&act->data);
267                     }
268                 }
269
270                 keyboard_reset_chains();
271             }
272             break;
273         }
274         p = p->next_sibling;
275     }
276 }
277
278 void keyboard_startup()
279 {
280     grab_keys(TRUE);
281 }
282
283 void keyboard_shutdown()
284 {
285     tree_destroy(keyboard_firstnode);
286     keyboard_firstnode = NULL;
287     grab_keys(FALSE);
288 }
289