ui/clipboard.c

   1 #include "qemu/osdep.h"
   2 #include "ui/clipboard.h"
   3
   4 static NotifierList clipboard_notifiers =
   5     NOTIFIER_LIST_INITIALIZER(clipboard_notifiers);
   6
   7 void qemu_clipboard_peer_register(QemuClipboardPeer *peer)
   8 {
   9     notifier_list_add(&clipboard_notifiers, &peer->update);
  10 }
  11
  12 void qemu_clipboard_peer_unregister(QemuClipboardPeer *peer)
  13 {
  14     notifier_remove(&peer->update);
  15 }
  16
  17 void qemu_clipboard_update(QemuClipboardInfo *info)
  18 {
  19     notifier_list_notify(&clipboard_notifiers, info);
  20 }
  21
  22 QemuClipboardInfo *qemu_clipboard_info_new(QemuClipboardPeer *owner,
  23                                            QemuClipboardSelection selection)
  24 {
  25     QemuClipboardInfo *info = g_new0(QemuClipboardInfo, 1);
  26
  27     info->owner = owner;
  28     info->selection = selection;
  29     info->refcount = 1;
  30
  31     return info;
  32 }
  33
  34 QemuClipboardInfo *qemu_clipboard_info_ref(QemuClipboardInfo *info)
  35 {
  36     info->refcount++;
  37     return info;
  38 }
  39
  40 void qemu_clipboard_info_unref(QemuClipboardInfo *info)
  41 {
  42     uint32_t type;
  43
  44     if (!info) {
  45         return;
  46     }
  47
  48     info->refcount--;
  49     if (info->refcount > 0) {
  50         return;
  51     }
  52
  53     for (type = 0; type < QEMU_CLIPBOARD_TYPE__COUNT; type++) {
  54         g_free(info->types[type].data);
  55     }
  56     g_free(info);
  57 }
  58
  59 void qemu_clipboard_request(QemuClipboardInfo *info,
  60                             QemuClipboardType type)
  61 {
  62     if (info->types[type].data ||
  63         info->types[type].requested ||
  64         !info->types[type].available ||
  65         !info->owner)
  66         return;
  67
  68     info->types[type].requested = true;
  69     info->owner->request(info, type);
  70 }
  71
  72 void qemu_clipboard_set_data(QemuClipboardPeer *peer,
  73                              QemuClipboardInfo *info,
  74                              QemuClipboardType type,
  75                              uint32_t size,
  76                              const void *data,
  77                              bool update)
  78 {
  79     if (!info ||
  80         info->owner != peer) {
  81         return;
  82     }
  83
  84     g_free(info->types[type].data);
  85     info->types[type].data = g_memdup(data, size);
  86     info->types[type].size = size;
  87     info->types[type].available = true;
  88
  89     if (update) {
  90         qemu_clipboard_update(info);
  91     }
  92 }