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/* This file is part of Owl.
*
* Copyright © 2019-2021 Sergey Bugaev <bugaevc@gmail.com>
*
* Owl is free software: you can redistribute it and/or modify it
* under the terms of the GNU General Public License as published
* by the Free Software Foundation, either version 3 of the License,
* or (at your option) any later version.
*
* Owl is distributed in the hope that it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
* for more details.
*
* You should have received a copy of the GNU General Public License
* along with Owl. If not, see <http://www.gnu.org/licenses/>.
*/
#import "OwlWlDataDevice.h"
#import <wayland-server.h>
#import "OwlWlDataSource.h"
#import "OwlWlDataOffer.h"
#import "OwlSelection.h"
@implementation OwlWlDataDevice
static NSMutableArray *dataDevices;
+ (void) initialize {
if (dataDevices == nil) {
dataDevices = [[NSMutableArray alloc] initWithCapacity: 1];
}
}
+ (OwlWlDataDevice *) dataDeviceForClient: (struct wl_client *) client {
for (OwlWlDataDevice *dataDevice in dataDevices) {
struct wl_resource *resource = dataDevice->_resource;
if (client == wl_resource_get_client(resource)) {
return dataDevice;
}
}
return nil;
}
static void data_device_destroy(struct wl_resource *resource) {
OwlWlDataDevice *self = wl_resource_get_user_data(resource);
[dataDevices removeObjectIdenticalTo: self];
[self release];
}
static void data_device_set_selection_handler(
struct wl_client *client,
struct wl_resource *resource,
struct wl_resource *source_resource,
uint32_t serial
) {
// TODO: Check the serial corresponds to an event of the focused surface
// and the event is not it gaining focus.
OwlWlDataDevice *self = wl_resource_get_user_data(resource);
OwlWlDataSource *dataSource = nil;
if (source_resource != NULL) {
dataSource = wl_resource_get_user_data(source_resource);
}
[[OwlSelection clipboard] setDataSource: dataSource];
}
static void data_device_release_handler(
struct wl_client *client,
struct wl_resource *resource
) {
wl_resource_destroy(resource);
}
static const struct wl_data_device_interface data_device_impl = {
.set_selection = data_device_set_selection_handler,
.release = data_device_release_handler
};
- (id) initWithResource: (struct wl_resource *) resource {
self = [super initWithResource: resource];
wl_resource_set_implementation(
resource,
&data_device_impl,
[self retain],
data_device_destroy
);
[dataDevices addObject: self];
[[OwlSelection clipboard] addDataDevice: self];
// FIXME: Call [self focused] here if we already have focus.
[self selectionChanged: [OwlSelection clipboard]];
return self;
}
- (void) dealloc {
[[OwlSelection clipboard] removeDataDevice: self];
[super dealloc];
}
- (void) sendSelection {
_selectionHasChangedSinceLastFocused = NO;
OwlDataSource *dataSource = [[OwlSelection clipboard] dataSource];
if (dataSource == nil) {
wl_data_device_send_selection(_resource, NULL);
return;
}
struct wl_resource *offer_resource = wl_resource_create(
wl_resource_get_client(_resource),
&wl_data_offer_interface,
2,
0
);
wl_data_device_send_data_offer(_resource, offer_resource);
// Creating an OwlDataOffer sends out the MIME types automatically.
OwlWlDataOffer *offer =
[[OwlWlDataOffer alloc] initWithResource: offer_resource
dataSource: dataSource];
wl_data_device_send_selection(_resource, offer_resource);
[offer release];
}
- (void) selectionChanged: (OwlSelection *) selection {
if (_focusCount > 0) {
[self sendSelection];
} else {
_selectionHasChangedSinceLastFocused = YES;
}
}
- (void) focused {
_focusCount++;
if (_focusCount == 1 && _selectionHasChangedSinceLastFocused) {
[self sendSelection];
}
}
- (void) unfocused {
_focusCount--;
}
@end
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