85abc9bfe7
2003-06-04 Rob Adams <robadams@ucla.edu> * src/window.c (meta_window_new): don't be stupid and set window->group = NULL after calling meta_window_compute_group. * src/group.c (meta_window_get_group): assert that window->group != NULL in here instead of computing the group to ensure robustness.
263 lines
6.6 KiB
C
263 lines
6.6 KiB
C
/* Metacity window groups */
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/*
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* Copyright (C) 2002 Red Hat Inc.
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License as
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* published by the Free Software Foundation; either version 2 of the
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* License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful, but
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* WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
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* 02111-1307, USA.
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*/
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#include <config.h>
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#include "util.h"
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#include "group-private.h"
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#include "group-props.h"
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#include "window.h"
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static MetaGroup*
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meta_group_new (MetaDisplay *display,
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Window group_leader)
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{
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MetaGroup *group;
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#define N_INITIAL_PROPS 3
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Atom initial_props[N_INITIAL_PROPS];
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int i;
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g_assert (N_INITIAL_PROPS == (int) G_N_ELEMENTS (initial_props));
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group = g_new0 (MetaGroup, 1);
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group->display = display;
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group->windows = NULL;
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group->group_leader = group_leader;
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group->refcount = 1; /* owned by caller, hash table has only weak ref */
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if (display->groups_by_leader == NULL)
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display->groups_by_leader = g_hash_table_new (meta_unsigned_long_hash,
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meta_unsigned_long_equal);
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g_assert (g_hash_table_lookup (display->groups_by_leader, &group_leader) == NULL);
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g_hash_table_insert (display->groups_by_leader,
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&group->group_leader,
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group);
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/* Fill these in the order we want them to be gotten */
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i = 0;
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initial_props[i++] = display->atom_wm_client_machine;
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initial_props[i++] = display->atom_net_wm_pid;
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initial_props[i++] = display->atom_net_startup_id;
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g_assert (N_INITIAL_PROPS == i);
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meta_group_reload_properties (group, initial_props, N_INITIAL_PROPS);
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meta_topic (META_DEBUG_GROUPS,
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"Created new group with leader 0x%lx\n",
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group->group_leader);
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return group;
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}
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static void
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meta_group_unref (MetaGroup *group)
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{
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g_return_if_fail (group->refcount > 0);
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group->refcount -= 1;
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if (group->refcount == 0)
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{
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meta_topic (META_DEBUG_GROUPS,
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"Destroying group with leader 0x%lx\n",
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group->group_leader);
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g_assert (group->display->groups_by_leader != NULL);
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g_hash_table_remove (group->display->groups_by_leader,
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&group->group_leader);
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/* mop up hash table, this is how it gets freed on display close */
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if (g_hash_table_size (group->display->groups_by_leader) == 0)
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{
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g_hash_table_destroy (group->display->groups_by_leader);
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group->display->groups_by_leader = NULL;
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}
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g_free (group->wm_client_machine);
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g_free (group->startup_id);
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g_free (group);
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}
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}
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MetaGroup*
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meta_window_get_group (MetaWindow *window)
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{
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if (window->unmanaging)
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return NULL;
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g_assert (window->group != NULL);
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return window->group;
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}
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void
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meta_window_compute_group (MetaWindow* window)
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{
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MetaGroup *group;
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/* use window->xwindow if no window->xgroup_leader */
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group = NULL;
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if (window->display->groups_by_leader)
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{
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if (window->xgroup_leader != None)
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group = g_hash_table_lookup (window->display->groups_by_leader,
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&window->xgroup_leader);
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else
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group = g_hash_table_lookup (window->display->groups_by_leader,
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&window->xwindow);
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}
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if (group != NULL)
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{
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window->group = group;
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group->refcount += 1;
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}
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else
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{
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if (window->xgroup_leader != None)
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group = meta_group_new (window->display,
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window->xgroup_leader);
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else
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group = meta_group_new (window->display,
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window->xwindow);
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window->group = group;
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}
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window->group->windows = g_slist_prepend (window->group->windows,
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window);
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meta_topic (META_DEBUG_GROUPS,
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"Adding %s to group with leader 0x%lx\n",
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window->desc, group->group_leader);
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}
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static void
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remove_window_from_group (MetaWindow *window)
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{
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if (window->group != NULL)
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{
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meta_topic (META_DEBUG_GROUPS,
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"Removing %s from group with leader 0x%lx\n",
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window->desc, window->group->group_leader);
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window->group->windows =
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g_slist_remove (window->group->windows,
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window);
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meta_group_unref (window->group);
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window->group = NULL;
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}
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}
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void
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meta_window_group_leader_changed (MetaWindow *window)
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{
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remove_window_from_group (window);
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meta_window_compute_group (window);
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}
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void
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meta_window_shutdown_group (MetaWindow *window)
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{
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remove_window_from_group (window);
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}
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MetaGroup*
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meta_display_lookup_group (MetaDisplay *display,
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Window group_leader)
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{
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MetaGroup *group;
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group = NULL;
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if (display->groups_by_leader)
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group = g_hash_table_lookup (display->groups_by_leader,
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&group_leader);
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return group;
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}
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GSList*
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meta_group_list_windows (MetaGroup *group)
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{
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return g_slist_copy (group->windows);
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}
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void
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meta_group_update_layers (MetaGroup *group)
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{
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GSList *tmp;
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GSList *frozen_stacks;
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if (group->windows == NULL)
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return;
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frozen_stacks = NULL;
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tmp = group->windows;
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while (tmp != NULL)
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{
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MetaWindow *window = tmp->data;
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/* we end up freezing the same stack a lot of times,
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* but doesn't hurt anything. have to handle
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* groups that span 2 screens.
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*/
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meta_stack_freeze (window->screen->stack);
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frozen_stacks = g_slist_prepend (frozen_stacks, window->screen->stack);
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meta_stack_update_layer (window->screen->stack,
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window);
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tmp = tmp->next;
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}
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tmp = frozen_stacks;
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while (tmp != NULL)
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{
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meta_stack_thaw (tmp->data);
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tmp = tmp->next;
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}
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g_slist_free (frozen_stacks);
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}
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const char*
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meta_group_get_startup_id (MetaGroup *group)
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{
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return group->startup_id;
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}
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gboolean
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meta_group_property_notify (MetaGroup *group,
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XEvent *event)
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{
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meta_group_reload_property (group,
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event->xproperty.atom);
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return TRUE;
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}
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