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#include "qemu/osdep.h"
#include "ui/clipboard.h"
#include "trace.h"
static NotifierList clipboard_notifiers =
NOTIFIER_LIST_INITIALIZER(clipboard_notifiers);
static QemuClipboardInfo *cbinfo[QEMU_CLIPBOARD_SELECTION__COUNT];
void qemu_clipboard_peer_register(QemuClipboardPeer *peer)
{
notifier_list_add(&clipboard_notifiers, &peer->notifier);
}
void qemu_clipboard_peer_unregister(QemuClipboardPeer *peer)
{
int i;
for (i = 0; i < QEMU_CLIPBOARD_SELECTION__COUNT; i++) {
qemu_clipboard_peer_release(peer, i);
}
notifier_remove(&peer->notifier);
}
bool qemu_clipboard_peer_owns(QemuClipboardPeer *peer,
QemuClipboardSelection selection)
{
QemuClipboardInfo *info = qemu_clipboard_info(selection);
return info && info->owner == peer;
}
void qemu_clipboard_peer_release(QemuClipboardPeer *peer,
QemuClipboardSelection selection)
{
g_autoptr(QemuClipboardInfo) info = NULL;
if (qemu_clipboard_peer_owns(peer, selection)) {
/* set empty clipboard info */
info = qemu_clipboard_info_new(NULL, selection);
qemu_clipboard_update(info);
}
}
bool qemu_clipboard_check_serial(QemuClipboardInfo *info, bool client)
{
bool ok;
if (!info->has_serial ||
!cbinfo[info->selection] ||
!cbinfo[info->selection]->has_serial) {
trace_clipboard_check_serial(-1, -1, true);
return true;
}
if (client) {
ok = info->serial >= cbinfo[info->selection]->serial;
} else {
ok = info->serial > cbinfo[info->selection]->serial;
}
trace_clipboard_check_serial(cbinfo[info->selection]->serial, info->serial, ok);
return ok;
}
void qemu_clipboard_update(QemuClipboardInfo *info)
{
uint32_t type;
QemuClipboardNotify notify = {
.type = QEMU_CLIPBOARD_UPDATE_INFO,
.info = info,
};
assert(info->selection < QEMU_CLIPBOARD_SELECTION__COUNT);
for (type = 0; type < QEMU_CLIPBOARD_TYPE__COUNT; type++) {
/*
* If data is missing, the clipboard owner's 'request' callback needs to
* be set. Otherwise, there is no way to get the clipboard data and
* qemu_clipboard_request() cannot be called.
*/
if (info->types[type].available && !info->types[type].data) {
assert(info->owner && info->owner->request);
}
}
notifier_list_notify(&clipboard_notifiers, ¬ify);
if (cbinfo[info->selection] != info) {
qemu_clipboard_info_unref(cbinfo[info->selection]);
cbinfo[info->selection] = qemu_clipboard_info_ref(info);
}
}
QemuClipboardInfo *qemu_clipboard_info(QemuClipboardSelection selection)
{
assert(selection < QEMU_CLIPBOARD_SELECTION__COUNT);
return cbinfo[selection];
}
QemuClipboardInfo *qemu_clipboard_info_new(QemuClipboardPeer *owner,
QemuClipboardSelection selection)
{
QemuClipboardInfo *info = g_new0(QemuClipboardInfo, 1);
info->owner = owner;
info->selection = selection;
info->refcount = 1;
return info;
}
QemuClipboardInfo *qemu_clipboard_info_ref(QemuClipboardInfo *info)
{
info->refcount++;
return info;
}
void qemu_clipboard_info_unref(QemuClipboardInfo *info)
{
uint32_t type;
if (!info) {
return;
}
info->refcount--;
if (info->refcount > 0) {
return;
}
for (type = 0; type < QEMU_CLIPBOARD_TYPE__COUNT; type++) {
g_free(info->types[type].data);
}
g_free(info);
}
void qemu_clipboard_request(QemuClipboardInfo *info,
QemuClipboardType type)
{
if (info->types[type].data ||
info->types[type].requested ||
!info->types[type].available ||
!info->owner)
return;
assert(info->owner->request);
info->types[type].requested = true;
info->owner->request(info, type);
}
void qemu_clipboard_reset_serial(void)
{
QemuClipboardNotify notify = { .type = QEMU_CLIPBOARD_RESET_SERIAL };
int i;
trace_clipboard_reset_serial();
for (i = 0; i < QEMU_CLIPBOARD_SELECTION__COUNT; i++) {
QemuClipboardInfo *info = qemu_clipboard_info(i);
if (info) {
info->serial = 0;
}
}
notifier_list_notify(&clipboard_notifiers, ¬ify);
}
void qemu_clipboard_set_data(QemuClipboardPeer *peer,
QemuClipboardInfo *info,
QemuClipboardType type,
uint32_t size,
const void *data,
bool update)
{
if (!info ||
info->owner != peer) {
return;
}
g_free(info->types[type].data);
if (size) {
info->types[type].data = g_memdup2(data, size);
info->types[type].size = size;
info->types[type].available = true;
} else {
info->types[type].data = NULL;
info->types[type].size = 0;
info->types[type].available = false;
}
if (update) {
qemu_clipboard_update(info);
}
}
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