1/* x-input.m -- event handling
2   Copyright (c) 2002, 2008 Apple Computer, Inc. All rights reserved.
3
4   Permission is hereby granted, free of charge, to any person
5   obtaining a copy of this software and associated documentation files
6   (the "Software"), to deal in the Software without restriction,
7   including without limitation the rights to use, copy, modify, merge,
8   publish, distribute, sublicense, and/or sell copies of the Software,
9   and to permit persons to whom the Software is furnished to do so,
10   subject to the following conditions:
11
12   The above copyright notice and this permission notice shall be
13   included in all copies or substantial portions of the Software.
14
15   THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
16   EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
17   MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
18   NONINFRINGEMENT.  IN NO EVENT SHALL THE ABOVE LISTED COPYRIGHT
19   HOLDER(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
20   WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
21   OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
22   DEALINGS IN THE SOFTWARE.
23
24   Except as contained in this notice, the name(s) of the above
25   copyright holders shall not be used in advertising or otherwise to
26   promote the sale, use or other dealings in this Software without
27   prior written authorization.
28 */
29
30#include "pbproxy.h"
31#import "x-selection.h"
32
33#include <CoreFoundation/CFSocket.h>
34#include <CoreFoundation/CFRunLoop.h>
35
36#include <X11/Xatom.h>
37#include <X11/keysym.h>
38#include <X11/extensions/applewm.h>
39
40#include <unistd.h>
41
42static CFRunLoopSourceRef xpbproxy_dpy_source;
43
44#ifdef STANDALONE_XPBPROXY
45BOOL xpbproxy_prefs_reload = NO;
46#endif
47
48/* Timestamp when the X server last told us it's active */
49static Time last_activation_time;
50
51static void x_event_apple_wm_notify(XAppleWMNotifyEvent *e) {
52    int type = e->type - xpbproxy_apple_wm_event_base;
53    int kind = e->kind;
54
55    /* We want to reload prefs even if we're not active */
56    if(type == AppleWMActivationNotify &&
57       kind == AppleWMReloadPreferences)
58        [xpbproxy_selection_object() reload_preferences];
59
60    if(![xpbproxy_selection_object() is_active])
61        return;
62
63    switch (type) {              
64        case AppleWMActivationNotify:
65            switch (kind) {
66                case AppleWMIsActive:
67                    last_activation_time = e->time;
68                    [xpbproxy_selection_object() x_active:e->time];
69                    break;
70                    
71                case AppleWMIsInactive:
72                    [xpbproxy_selection_object() x_inactive:e->time];
73                    break;
74            }
75            break;
76            
77        case AppleWMPasteboardNotify:
78            switch (kind) {
79                case AppleWMCopyToPasteboard:
80                    [xpbproxy_selection_object() x_copy:e->time];
81            }
82            break;
83    }
84}
85
86static void xpbproxy_process_xevents(void) {
87    NSAutoreleasePool *pool = [[NSAutoreleasePool alloc] init];
88    
89    if(pool == nil) {
90        fprintf(stderr, "unable to allocate/init auto release pool!\n");
91        return;
92    }
93    
94    while (XPending(xpbproxy_dpy) != 0) {
95        XEvent e;
96        
97        XNextEvent (xpbproxy_dpy, &e);
98        
99        switch (e.type) {                
100            case SelectionClear:
101                if([xpbproxy_selection_object() is_active])
102                    [xpbproxy_selection_object () clear_event:&e.xselectionclear];
103                break;
104                
105            case SelectionRequest:
106                [xpbproxy_selection_object () request_event:&e.xselectionrequest];
107                break;
108                
109            case SelectionNotify:
110                [xpbproxy_selection_object () notify_event:&e.xselection];
111                break;
112                
113            case PropertyNotify:
114                [xpbproxy_selection_object () property_event:&e.xproperty];
115                break;
116                
117            default:
118                if(e.type >= xpbproxy_apple_wm_event_base &&
119                   e.type < xpbproxy_apple_wm_event_base + AppleWMNumberEvents) {
120                    x_event_apple_wm_notify((XAppleWMNotifyEvent *) &e);
121                } else if(e.type == xpbproxy_xfixes_event_base + XFixesSelectionNotify) {
122                    [xpbproxy_selection_object() xfixes_selection_notify:(XFixesSelectionNotifyEvent *)&e];
123                }
124                break;
125        }
126        
127        XFlush(xpbproxy_dpy);
128    }
129    
130    [pool release];
131}
132
133static BOOL add_input_socket (int sock, CFOptionFlags callback_types,
134                             CFSocketCallBack callback, const CFSocketContext *ctx,
135                             CFRunLoopSourceRef *cf_source) {
136    CFSocketRef cf_sock;
137    
138    cf_sock = CFSocketCreateWithNative (kCFAllocatorDefault, sock,
139                                        callback_types, callback, ctx);
140    if (cf_sock == NULL) {
141        close (sock);
142        return FALSE;
143    }
144    
145    *cf_source = CFSocketCreateRunLoopSource (kCFAllocatorDefault,
146                                              cf_sock, 0);
147    CFRelease (cf_sock);
148    
149    if (*cf_source == NULL)
150        return FALSE;
151    
152    CFRunLoopAddSource (CFRunLoopGetCurrent (),
153                        *cf_source, kCFRunLoopDefaultMode);
154    return TRUE;
155}
156
157static void x_input_callback (CFSocketRef sock, CFSocketCallBackType type,
158                              CFDataRef address, const void *data, void *info) {
159
160#ifdef STANDALONE_XPBPROXY
161    if(xpbproxy_prefs_reload) {
162        [xpbproxy_selection_object() reload_preferences];
163        xpbproxy_prefs_reload = NO;
164    }
165#endif
166    
167    xpbproxy_process_xevents();
168}
169
170BOOL xpbproxy_input_register(void) {
171    return add_input_socket(ConnectionNumber(xpbproxy_dpy), kCFSocketReadCallBack,
172                            x_input_callback, NULL, &xpbproxy_dpy_source);
173}
174