mutter/src/wayland/meta-wayland-data-device.h

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/*
* Copyright © 2008 Kristian Høgsberg
*
* Permission to use, copy, modify, distribute, and sell this software and its
* documentation for any purpose is hereby granted without fee, provided that
* the above copyright notice appear in all copies and that both that copyright
* notice and this permission notice appear in supporting documentation, and
* that the name of the copyright holders not be used in advertising or
* publicity pertaining to distribution of the software without specific,
* written prior permission. The copyright holders make no representations
* about the suitability of this software for any purpose. It is provided "as
* is" without express or implied warranty.
*
* THE COPYRIGHT HOLDERS DISCLAIM ALL WARRANTIES WITH REGARD TO THIS SOFTWARE,
* INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO
* EVENT SHALL THE COPYRIGHT HOLDERS BE LIABLE FOR ANY SPECIAL, INDIRECT OR
* CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE,
* DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER
* TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE
* OF THIS SOFTWARE.
*/
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#ifndef META_WAYLAND_DATA_DEVICE_H
#define META_WAYLAND_DATA_DEVICE_H
wayland: Make MetaWaylandDataSource ownership protocol specific Firstly, this patch makes MetawaylandDataSource a GObject. This is in order to easier track its lifetime without adding destroy signals etc. It also makes the vfunc table GObject class functions instead while at it, as well as moves protocol specific part of the source into their own implementations. An important part of this patch is the change of ownership. Prior to this patch, MetaWaylandDataDevice would kind of own the source, but for Wayland sources it would remove it if the corresponding wl_resource was destroyed. For XWayland clients it would own it completely, and only remove it if the source was replaced. This patch changes so that the protocol implementation owns the source. For Wayland sources, the wl_resource owns the source, and the MetaWaylandDataDevice sets a weak reference (so in other words, no semantical changes really). For XWayland sources, the source is owned by the selection bridge, and not removed until replaced or if the client goes away. Given the changes in ownership, data offers may now properly track the lifetime of a source it represents. Prior to this patch, if an offer with an XWayland source would loose its source, it wouldn't get notified and have an invalid pointer it would potentally crash on. For Wayland sources, an offer would have a weak reference and clean itself up if the source went away. This patch changes so the behavior is consistent, meaning a weak reference is added to the source GObject so that the offer can behave correctly both for Wayland sources and XWayland sources. https://bugzilla.gnome.org/show_bug.cgi?id=750680
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#include <glib-object.h>
#include <wayland-server.h>
#include "clutter/clutter.h"
#include "meta/meta-selection-source.h"
#include "wayland/meta-wayland-data-offer.h"
#include "wayland/meta-wayland-data-source.h"
#include "wayland/meta-wayland-types.h"
typedef struct _MetaWaylandDragGrab MetaWaylandDragGrab;
typedef struct _MetaWaylandDataSourceFuncs MetaWaylandDataSourceFuncs;
struct _MetaWaylandDataDevice
{
uint32_t selection_serial;
MetaWaylandDataSource *selection_data_source;
MetaWaylandDataSource *dnd_data_source;
struct wl_list resource_list;
struct wl_list focus_resource_list;
MetaWaylandDragGrab *current_grab;
struct wl_client *focus_client;
guint selection_owner_signal_id;
MetaSelectionSource *owners[META_N_SELECTION_TYPES];
};
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void meta_wayland_data_device_manager_init (MetaWaylandCompositor *compositor);
void meta_wayland_data_device_init (MetaWaylandDataDevice *data_device);
void meta_wayland_data_device_set_keyboard_focus (MetaWaylandDataDevice *data_device);
gboolean meta_wayland_data_device_is_dnd_surface (MetaWaylandDataDevice *data_device,
MetaWaylandSurface *surface);
MetaWaylandDragGrab *
meta_wayland_data_device_get_current_grab (MetaWaylandDataDevice *data_device);
void meta_wayland_data_device_set_dnd_source (MetaWaylandDataDevice *data_device,
MetaWaylandDataSource *source);
void meta_wayland_data_device_set_selection (MetaWaylandDataDevice *data_device,
MetaWaylandDataSource *source,
guint32 serial);
void meta_wayland_data_device_unset_dnd_selection (MetaWaylandDataDevice *data_device);
const MetaWaylandDragDestFuncs *
meta_wayland_data_device_get_drag_dest_funcs (void);
void meta_wayland_data_device_start_drag (MetaWaylandDataDevice *data_device,
struct wl_client *client,
const MetaWaylandPointerGrabInterface *funcs,
MetaWaylandSurface *surface,
MetaWaylandDataSource *source,
MetaWaylandSurface *icon_surface);
void meta_wayland_data_device_end_drag (MetaWaylandDataDevice *data_device);
void meta_wayland_drag_grab_set_focus (MetaWaylandDragGrab *drag_grab,
MetaWaylandSurface *surface);
MetaWaylandSurface *
meta_wayland_drag_grab_get_focus (MetaWaylandDragGrab *drag_grab);
void meta_wayland_drag_grab_update_feedback_actor (MetaWaylandDragGrab *drag_grab,
ClutterEvent *event);
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#endif /* META_WAYLAND_DATA_DEVICE_H */