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gnome-shell/src/shell-app-system.c
William Jon McCann dd99ed73a9 Fallback to using a generic when requested image isn't found 
Use a type specific generic image when the requested icon
can't be loaded instead of using an empty texture.

https://bugzilla.gnome.org/show_bug.cgi?id=644668
2011-03-17 14:02:04 -04:00

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/* -*- mode: C; c-file-style: "gnu"; indent-tabs-mode: nil; -*- */
#include "config.h"
#include "shell-app-system.h"
#include <string.h>
#include <gio/gio.h>
#include <gio/gdesktopappinfo.h>
#include <gtk/gtk.h>
#include <clutter/clutter.h>
#include <glib/gi18n.h>
#include <meta/display.h>
#include "shell-app-private.h"
#include "shell-window-tracker-private.h"
#include "shell-global.h"
#include "st.h"
#define GMENU_I_KNOW_THIS_IS_UNSTABLE
#include <gmenu-tree.h>
/* Vendor prefixes are something that can be preprended to a .desktop
* file name. Undo this.
*/
static const char*const known_vendor_prefixes[] = { "gnome",
"fedora",
"mozilla",
NULL };
enum {
PROP_0,
};
enum {
INSTALLED_CHANGED,
LAST_SIGNAL
};
static guint signals[LAST_SIGNAL] = { 0 };
struct _ShellAppSystemPrivate {
GMenuTree *apps_tree;
GMenuTree *settings_tree;
GHashTable *app_id_to_info;
GHashTable *app_id_to_app;
GSList *cached_flattened_apps; /* ShellAppInfo */
GSList *cached_settings; /* ShellAppInfo */
gint app_monitor_id;
guint app_change_timeout_id;
};
static void shell_app_system_finalize (GObject *object);
static gboolean on_tree_changed (gpointer user_data);
static void on_tree_changed_cb (GMenuTree *tree, gpointer user_data);
static void reread_menus (ShellAppSystem *self);
G_DEFINE_TYPE(ShellAppSystem, shell_app_system, G_TYPE_OBJECT);
typedef enum {
SHELL_APP_INFO_TYPE_ENTRY,
SHELL_APP_INFO_TYPE_DESKTOP_FILE,
SHELL_APP_INFO_TYPE_WINDOW
} ShellAppInfoType;
struct _ShellAppInfo {
ShellAppInfoType type;
/* We need this for two reasons. First, GKeyFile doesn't have a refcount.
* http://bugzilla.gnome.org/show_bug.cgi?id=590808
*
* But more generally we'll always need it so we know when to free this
* structure (short of weak references on each item).
*/
guint refcount;
char *casefolded_name;
char *name_collation_key;
char *casefolded_description;
char *casefolded_exec;
GMenuTreeItem *entry;
GKeyFile *keyfile;
char *keyfile_path;
MetaWindow *window;
char *window_id;
};
ShellAppInfo*
shell_app_info_ref (ShellAppInfo *info)
{
info->refcount++;
return info;
}
void
shell_app_info_unref (ShellAppInfo *info)
{
if (--info->refcount > 0)
return;
g_free (info->casefolded_name);
g_free (info->name_collation_key);
g_free (info->casefolded_description);
switch (info->type)
{
case SHELL_APP_INFO_TYPE_ENTRY:
gmenu_tree_item_unref (info->entry);
break;
case SHELL_APP_INFO_TYPE_DESKTOP_FILE:
g_key_file_free (info->keyfile);
g_free (info->keyfile_path);
break;
case SHELL_APP_INFO_TYPE_WINDOW:
g_object_unref (info->window);
g_free (info->window_id);
break;
}
g_slice_free (ShellAppInfo, info);
}
static ShellAppInfo *
shell_app_info_new_from_tree_item (GMenuTreeItem *item)
{
ShellAppInfo *info;
if (!item)
return NULL;
info = g_slice_alloc0 (sizeof (ShellAppInfo));
info->type = SHELL_APP_INFO_TYPE_ENTRY;
info->refcount = 1;
info->entry = gmenu_tree_item_ref (item);
return info;
}
static ShellAppInfo *
shell_app_info_new_from_window (MetaWindow *window)
{
ShellAppInfo *info;
info = g_slice_alloc0 (sizeof (ShellAppInfo));
info->type = SHELL_APP_INFO_TYPE_WINDOW;
info->refcount = 1;
info->window = g_object_ref (window);
/* For windows, its id is simply its pointer address as a string.
* There are various other alternatives, but the address is unique
* and unchanging, which is pretty much the best we can do.
*/
info->window_id = g_strdup_printf ("window:%p", window);
return info;
}
static void shell_app_system_class_init(ShellAppSystemClass *klass)
{
GObjectClass *gobject_class = (GObjectClass *)klass;
gobject_class->finalize = shell_app_system_finalize;
signals[INSTALLED_CHANGED] =
g_signal_new ("installed-changed",
SHELL_TYPE_APP_SYSTEM,
G_SIGNAL_RUN_LAST,
G_STRUCT_OFFSET (ShellAppSystemClass, installed_changed),
NULL, NULL,
g_cclosure_marshal_VOID__VOID,
G_TYPE_NONE, 0);
g_type_class_add_private (gobject_class, sizeof (ShellAppSystemPrivate));
}
static void
shell_app_system_init (ShellAppSystem *self)
{
ShellAppSystemPrivate *priv;
self->priv = priv = G_TYPE_INSTANCE_GET_PRIVATE (self,
SHELL_TYPE_APP_SYSTEM,
ShellAppSystemPrivate);
/* The key is owned by the value */
priv->app_id_to_info = g_hash_table_new_full (g_str_hash, g_str_equal,
NULL, (GDestroyNotify) shell_app_info_unref);
/* Key is owned by info */
priv->app_id_to_app = g_hash_table_new (g_str_hash, g_str_equal);
/* For now, we want to pick up Evince, Nautilus, etc. We'll
* handle NODISPLAY semantics at a higher level or investigate them
* case by case.
*/
priv->apps_tree = gmenu_tree_lookup ("applications.menu", GMENU_TREE_FLAGS_INCLUDE_NODISPLAY);
priv->settings_tree = gmenu_tree_lookup ("settings.menu", GMENU_TREE_FLAGS_NONE);
priv->app_change_timeout_id = 0;
gmenu_tree_add_monitor (priv->apps_tree, on_tree_changed_cb, self);
gmenu_tree_add_monitor (priv->settings_tree, on_tree_changed_cb, self);
reread_menus (self);
}
static void
shell_app_system_finalize (GObject *object)
{
ShellAppSystem *self = SHELL_APP_SYSTEM (object);
ShellAppSystemPrivate *priv = self->priv;
gmenu_tree_remove_monitor (priv->apps_tree, on_tree_changed_cb, self);
gmenu_tree_remove_monitor (priv->settings_tree, on_tree_changed_cb, self);
gmenu_tree_unref (priv->apps_tree);
gmenu_tree_unref (priv->settings_tree);
g_hash_table_destroy (priv->app_id_to_info);
g_hash_table_destroy (priv->app_id_to_app);
g_slist_foreach (priv->cached_flattened_apps, (GFunc)shell_app_info_unref, NULL);
g_slist_free (priv->cached_flattened_apps);
priv->cached_flattened_apps = NULL;
g_slist_foreach (priv->cached_settings, (GFunc)shell_app_info_unref, NULL);
g_slist_free (priv->cached_settings);
priv->cached_settings = NULL;
G_OBJECT_CLASS (shell_app_system_parent_class)->finalize(object);
}
static GSList *
gather_entries_recurse (ShellAppSystem *monitor,
GSList *apps,
GHashTable *unique,
GMenuTreeDirectory *root)
{
GSList *contents;
GSList *iter;
contents = gmenu_tree_directory_get_contents (root);
for (iter = contents; iter; iter = iter->next)
{
GMenuTreeItem *item = iter->data;
switch (gmenu_tree_item_get_type (item))
{
case GMENU_TREE_ITEM_ENTRY:
{
ShellAppInfo *app = shell_app_info_new_from_tree_item (item);
if (!g_hash_table_lookup (unique, shell_app_info_get_id (app)))
{
apps = g_slist_prepend (apps, app);
g_hash_table_insert (unique, (char*)shell_app_info_get_id (app), app);
}
}
break;
case GMENU_TREE_ITEM_DIRECTORY:
{
GMenuTreeDirectory *dir = (GMenuTreeDirectory*)item;
apps = gather_entries_recurse (monitor, apps, unique, dir);
}
break;
default:
break;
}
gmenu_tree_item_unref (item);
}
g_slist_free (contents);
return apps;
}
static void
reread_entries (ShellAppSystem *self,
GSList **cache,
GHashTable *unique,
GMenuTree *tree)
{
GMenuTreeDirectory *trunk;
trunk = gmenu_tree_get_root_directory (tree);
g_slist_foreach (*cache, (GFunc)shell_app_info_unref, NULL);
g_slist_free (*cache);
*cache = NULL;
if (!trunk)
{
*cache = NULL;
}
else
{
*cache = gather_entries_recurse (self, *cache, unique, trunk);
gmenu_tree_item_unref (trunk);
}
}
static void
cache_by_id (ShellAppSystem *self, GSList *apps)
{
GSList *iter;
for (iter = apps; iter; iter = iter->next)
{
ShellAppInfo *info = iter->data;
shell_app_info_ref (info);
/* the name is owned by the info itself */
g_hash_table_replace (self->priv->app_id_to_info, (char*)shell_app_info_get_id (info),
info);
}
}
static void
reread_menus (ShellAppSystem *self)
{
GHashTable *unique = g_hash_table_new (g_str_hash, g_str_equal);
reread_entries (self, &(self->priv->cached_flattened_apps), unique, self->priv->apps_tree);
g_hash_table_remove_all (unique);
reread_entries (self, &(self->priv->cached_settings), unique, self->priv->settings_tree);
g_hash_table_destroy (unique);
g_hash_table_remove_all (self->priv->app_id_to_info);
cache_by_id (self, self->priv->cached_flattened_apps);
cache_by_id (self, self->priv->cached_settings);
}
static gboolean
on_tree_changed (gpointer user_data)
{
ShellAppSystem *self = SHELL_APP_SYSTEM (user_data);
reread_menus (self);
g_signal_emit (self, signals[INSTALLED_CHANGED], 0);
self->priv->app_change_timeout_id = 0;
return FALSE;
}
static void
on_tree_changed_cb (GMenuTree *monitor, gpointer user_data)
{
ShellAppSystem *self = SHELL_APP_SYSTEM (user_data);
/* GMenu currently gives us a separate notification on the entire
* menu tree for each node in the tree that might potentially have
* changed. (See http://bugzilla.gnome.org/show_bug.cgi?id=172046.)
* We need to compress these to avoid doing large extra amounts of
* work.
*
* Even when that bug is fixed, compression is still useful; for one
* thing we want to need to compress across notifications of changes
* to the settings tree. Second we want to compress if multiple
* changes are made to the desktop files at different times but in
* short succession.
*/
if (self->priv->app_change_timeout_id != 0)
return;
self->priv->app_change_timeout_id = g_timeout_add_full (G_PRIORITY_DEFAULT_IDLE, 3000,
(GSourceFunc) on_tree_changed,
self, NULL);
}
GType
shell_app_info_get_type (void)
{
static GType gtype = G_TYPE_INVALID;
if (gtype == G_TYPE_INVALID)
{
gtype = g_boxed_type_register_static ("ShellAppInfo",
(GBoxedCopyFunc)shell_app_info_ref,
(GBoxedFreeFunc)shell_app_info_unref);
}
return gtype;
}
/**
* shell_app_system_get_flattened_apps:
*
* Traverses a toplevel menu, and returns all items under it. Nested items
* are flattened. This value is computed on initial call and cached thereafter
* until the set of installed applications changes.
*
* Return value: (transfer none) (element-type ShellAppInfo): List of applications
*/
GSList *
shell_app_system_get_flattened_apps (ShellAppSystem *self)
{
return self->priv->cached_flattened_apps;
}
/**
* shell_app_system_get_all_settings:
*
* Returns a list of application items under "settings.menu".
*
* Return value: (transfer none) (element-type ShellAppInfo): List of applications
*/
GSList *
shell_app_system_get_all_settings (ShellAppSystem *monitor)
{
return monitor->priv->cached_settings;
}
/**
* shell_app_system_get_default:
*
* Return Value: (transfer none): The global #ShellAppSystem singleton
*/
ShellAppSystem *
shell_app_system_get_default ()
{
static ShellAppSystem *instance = NULL;
if (instance == NULL)
instance = g_object_new (SHELL_TYPE_APP_SYSTEM, NULL);
return instance;
}
typedef struct {
ShellAppSystem *appsys;
ShellAppInfo *info;
} ShellAppRef;
static void
shell_app_system_on_app_weakref (gpointer data,
GObject *location)
{
ShellAppRef *ref = data;
g_hash_table_remove (ref->appsys->priv->app_id_to_app, shell_app_info_get_id (ref->info));
shell_app_info_unref (ref->info);
g_free (ref);
}
/**
* shell_app_system_get_app:
*
* Find or create a #ShellApp corresponding to an id; if already cached
* elsewhere in memory, return that instance. Otherwise, create a new
* one.
*
* Return value: (transfer full): The #ShellApp for id, or %NULL if none
*/
ShellApp *
shell_app_system_get_app (ShellAppSystem *self,
const char *id)
{
ShellAppInfo *info;
ShellApp *app;
app = g_hash_table_lookup (self->priv->app_id_to_app, id);
if (app)
return g_object_ref (app);
info = g_hash_table_lookup (self->priv->app_id_to_info, id);
if (!info)
return NULL;
app = _shell_app_new (info);
return app;
}
/**
* shell_app_system_get_app_for_path:
* @system: a #ShellAppSystem
* @desktop_path: (type utf8): UTF-8 encoded absolute file name
*
* Find or create a #ShellApp corresponding to a given absolute
* file name which must be in the standard paths (XDG_DATA_DIRS).
* For files outside the datadirs, this function returns %NULL.
*
* If already cached elsewhere in memory, return that instance.
* Otherwise, create a new one.
*
* Return value: (transfer full): The #ShellApp for id, or %NULL if none
*/
ShellApp *
shell_app_system_get_app_for_path (ShellAppSystem *system,
const char *desktop_path)
{
const char *basename;
ShellAppInfo *info;
basename = g_strrstr (desktop_path, "/");
if (basename)
basename += 1;
else
basename = desktop_path;
info = g_hash_table_lookup (system->priv->app_id_to_info, basename);
if (!info)
return NULL;
if (info->type == SHELL_APP_INFO_TYPE_ENTRY)
{
const char *full_path = gmenu_tree_entry_get_desktop_file_path ((GMenuTreeEntry*) info->entry);
if (strcmp (desktop_path, full_path) != 0)
return NULL;
}
else
return NULL;
return shell_app_system_get_app (system, basename);
}
/**
* shell_app_system_get_app_for_window:
* @self: A #ShellAppSystem
* @window: A #MetaWindow
*
* Find or create a #ShellApp for window
*
* Return value: (transfer full): The #ShellApp for window, or %NULL if none
*/
ShellApp *
shell_app_system_get_app_for_window (ShellAppSystem *self,
MetaWindow *window)
{
char *id = g_strdup_printf ("window:%p", window);
ShellApp *app = g_hash_table_lookup (self->priv->app_id_to_app, id);
if (app)
g_object_ref (G_OBJECT (app));
else
app = _shell_app_new_for_window (window);
g_free (id);
return app;
}
/* ShellAppSystem ensures we have a unique instance of
* apps per id.
*/
void
_shell_app_system_register_app (ShellAppSystem *self,
ShellApp *app)
{
const char *id;
ShellAppRef *ref;
id = shell_app_get_id (app);
g_return_if_fail (g_hash_table_lookup (self->priv->app_id_to_app, id) == NULL);
ref = g_new0 (ShellAppRef, 1);
ref->appsys = self;
ref->info = shell_app_info_ref (_shell_app_get_info (app));
g_hash_table_insert (self->priv->app_id_to_app, (char*)shell_app_info_get_id (ref->info), app);
g_object_weak_ref (G_OBJECT (app), shell_app_system_on_app_weakref, ref);
}
/**
* shell_app_system_create_from_window:
*
* In the case where we can't otherwise determine an application
* associated with a window, this function can create a "fake"
* application just backed by information from the window itself.
*
* Return value: (transfer full): A new #ShellAppInfo
*/
ShellAppInfo *
shell_app_system_create_from_window (ShellAppSystem *system, MetaWindow *window)
{
return shell_app_info_new_from_window (window);
}
/**
* shell_app_system_lookup_heuristic_basename:
* @system: a #ShellAppSystem
* @id: Probable application identifier
*
* Find a valid application corresponding to a given
* heuristically determined application identifier
* string, or %NULL if none.
*
* Returns: (transfer full): A #ShellApp for @name
*/
ShellApp *
shell_app_system_lookup_heuristic_basename (ShellAppSystem *system,
const char *name)
{
ShellApp *result;
char **vendor_prefixes;
result = shell_app_system_get_app (system, name);
if (result != NULL)
return result;
for (vendor_prefixes = (char**)known_vendor_prefixes;
*vendor_prefixes; vendor_prefixes++)
{
char *tmpid = g_strjoin (NULL, *vendor_prefixes, "-", name, NULL);
result = shell_app_system_get_app (system, tmpid);
g_free (tmpid);
if (result != NULL)
return result;
}
return NULL;
}
typedef enum {
MATCH_NONE,
MATCH_SUBSTRING, /* Not prefix, substring */
MATCH_MULTIPLE_SUBSTRING, /* Matches multiple criteria with substrings */
MATCH_PREFIX, /* Strict prefix */
MATCH_MULTIPLE_PREFIX, /* Matches multiple criteria, at least one prefix */
} ShellAppInfoSearchMatch;
static char *
normalize_and_casefold (const char *str)
{
char *normalized, *result;
if (str == NULL)
return NULL;
normalized = g_utf8_normalize (str, -1, G_NORMALIZE_ALL);
result = g_utf8_casefold (normalized, -1);
g_free (normalized);
return result;
}
static char *
trim_exec_line (const char *str)
{
const char *start, *end, *pos;
end = strchr (str, ' ');
if (end == NULL)
end = str + strlen (str);
start = str;
while ((pos = strchr (start, '/')) && pos < end)
start = ++pos;
return g_strndup (start, end - start);
}
static void
shell_app_info_init_search_data (ShellAppInfo *info)
{
const char *name;
const char *exec;
const char *comment;
char *normalized_exec;
g_assert (info->type == SHELL_APP_INFO_TYPE_ENTRY);
name = gmenu_tree_entry_get_name ((GMenuTreeEntry*)info->entry);
info->casefolded_name = normalize_and_casefold (name);
comment = gmenu_tree_entry_get_comment ((GMenuTreeEntry*)info->entry);
info->casefolded_description = normalize_and_casefold (comment);
exec = gmenu_tree_entry_get_exec ((GMenuTreeEntry*)info->entry);
normalized_exec = normalize_and_casefold (exec);
info->casefolded_exec = trim_exec_line (normalized_exec);
g_free (normalized_exec);
}
static ShellAppInfoSearchMatch
shell_app_info_match_terms (ShellAppInfo *info,
GSList *terms)
{
GSList *iter;
ShellAppInfoSearchMatch match;
if (G_UNLIKELY(!info->casefolded_name))
shell_app_info_init_search_data (info);
match = MATCH_NONE;
for (iter = terms; iter; iter = iter->next)
{
ShellAppInfoSearchMatch current_match;
const char *term = iter->data;
const char *p;
current_match = MATCH_NONE;
p = strstr (info->casefolded_name, term);
if (p == info->casefolded_name)
current_match = MATCH_PREFIX;
else if (p != NULL)
current_match = MATCH_SUBSTRING;
p = strstr (info->casefolded_exec, term);
if (p != NULL)
{
if (p == info->casefolded_exec)
current_match = (current_match == MATCH_NONE) ? MATCH_PREFIX
: MATCH_MULTIPLE_PREFIX;
else if (current_match < MATCH_PREFIX)
current_match = (current_match == MATCH_NONE) ? MATCH_SUBSTRING
: MATCH_MULTIPLE_SUBSTRING;
}
if (info->casefolded_description && current_match < MATCH_PREFIX)
{
/* Only do substring matches, as prefix matches are not meaningful
* enough for descriptions
*/
p = strstr (info->casefolded_description, term);
if (p != NULL)
current_match = (current_match == MATCH_NONE) ? MATCH_SUBSTRING
: MATCH_MULTIPLE_SUBSTRING;
}
if (current_match == MATCH_NONE)
return current_match;
if (current_match > match)
match = current_match;
}
return match;
}
static gint
shell_app_info_compare (gconstpointer a,
gconstpointer b,
gpointer data)
{
ShellAppSystem *system = data;
const char *id_a = a;
const char *id_b = b;
ShellAppInfo *info_a = g_hash_table_lookup (system->priv->app_id_to_info, id_a);
ShellAppInfo *info_b = g_hash_table_lookup (system->priv->app_id_to_info, id_b);
if (!info_a->name_collation_key)
info_a->name_collation_key = g_utf8_collate_key (gmenu_tree_entry_get_name ((GMenuTreeEntry*)info_a->entry), -1);
if (!info_b->name_collation_key)
info_b->name_collation_key = g_utf8_collate_key (gmenu_tree_entry_get_name ((GMenuTreeEntry*)info_b->entry), -1);
return strcmp (info_a->name_collation_key, info_b->name_collation_key);
}
static GSList *
sort_and_concat_results (ShellAppSystem *system,
GSList *multiple_prefix_matches,
GSList *prefix_matches,
GSList *multiple_substring_matches,
GSList *substring_matches)
{
multiple_prefix_matches = g_slist_sort_with_data (multiple_prefix_matches,
shell_app_info_compare,
system);
prefix_matches = g_slist_sort_with_data (prefix_matches,
shell_app_info_compare,
system);
multiple_substring_matches = g_slist_sort_with_data (multiple_substring_matches,
shell_app_info_compare,
system);
substring_matches = g_slist_sort_with_data (substring_matches,
shell_app_info_compare,
system);
return g_slist_concat (multiple_prefix_matches, g_slist_concat (prefix_matches, g_slist_concat (multiple_substring_matches, substring_matches)));
}
/**
* normalize_terms:
* @terms: (element-type utf8): Input search terms
*
* Returns: (element-type utf8) (transfer full): Unicode-normalized and lowercased terms
*/
static GSList *
normalize_terms (GSList *terms)
{
GSList *normalized_terms = NULL;
GSList *iter;
for (iter = terms; iter; iter = iter->next)
{
const char *term = iter->data;
normalized_terms = g_slist_prepend (normalized_terms, normalize_and_casefold (term));
}
return normalized_terms;
}
static inline void
shell_app_system_do_match (ShellAppSystem *system,
ShellAppInfo *info,
GSList *terms,
GSList **multiple_prefix_results,
GSList **prefix_results,
GSList **multiple_substring_results,
GSList **substring_results)
{
const char *id = shell_app_info_get_id (info);
ShellAppInfoSearchMatch match;
if (shell_app_info_get_is_nodisplay (info))
return;
match = shell_app_info_match_terms (info, terms);
switch (match)
{
case MATCH_NONE:
break;
case MATCH_MULTIPLE_PREFIX:
*multiple_prefix_results = g_slist_prepend (*multiple_prefix_results,
(char *) id);
break;
case MATCH_PREFIX:
*prefix_results = g_slist_prepend (*prefix_results, (char *) id);
break;
case MATCH_MULTIPLE_SUBSTRING:
*multiple_substring_results = g_slist_prepend (*multiple_substring_results,
(char *) id);
break;
case MATCH_SUBSTRING:
*substring_results = g_slist_prepend (*substring_results, (char *) id);
break;
}
}
static GSList *
shell_app_system_initial_search_internal (ShellAppSystem *self,
GSList *terms,
GSList *source)
{
GSList *multiple_prefix_results = NULL;
GSList *prefix_results = NULL;
GSList *multiple_subtring_results = NULL;
GSList *substring_results = NULL;
GSList *iter;
GSList *normalized_terms = normalize_terms (terms);
for (iter = source; iter; iter = iter->next)
{
ShellAppInfo *info = iter->data;
shell_app_system_do_match (self, info, normalized_terms,
&multiple_prefix_results, &prefix_results,
&multiple_subtring_results, &substring_results);
}
g_slist_foreach (normalized_terms, (GFunc)g_free, NULL);
g_slist_free (normalized_terms);
return sort_and_concat_results (self, multiple_prefix_results, prefix_results, multiple_subtring_results, substring_results);
}
/**
* shell_app_system_initial_search:
* @system: A #ShellAppSystem
* @prefs: %TRUE if we should search preferences instead of apps
* @terms: (element-type utf8): List of terms, logical AND
*
* Search through applications for the given search terms. Note that returned
* strings are only valid until a return to the main loop.
*
* Returns: (transfer container) (element-type utf8): List of application identifiers
*/
GSList *
shell_app_system_initial_search (ShellAppSystem *self,
gboolean prefs,
GSList *terms)
{
return shell_app_system_initial_search_internal (self, terms,
prefs ? self->priv->cached_settings : self->priv->cached_flattened_apps);
}
/**
* shell_app_system_subsearch:
* @system: A #ShellAppSystem
* @prefs: %TRUE if we should search preferences instead of apps
* @previous_results: (element-type utf8): List of previous results
* @terms: (element-type utf8): List of terms, logical AND
*
* Search through a previous result set; for more information, see
* js/ui/search.js. Note the value of @prefs must be
* the same as passed to shell_app_system_initial_search(). Note that returned
* strings are only valid until a return to the main loop.
*
* Returns: (transfer container) (element-type utf8): List of application identifiers
*/
GSList *
shell_app_system_subsearch (ShellAppSystem *system,
gboolean prefs,
GSList *previous_results,
GSList *terms)
{
GSList *iter;
GSList *multiple_prefix_results = NULL;
GSList *prefix_results = NULL;
GSList *multiple_substring_results = NULL;
GSList *substring_results = NULL;
GSList *normalized_terms = normalize_terms (terms);
/* Note prefs is deliberately ignored; both apps and prefs are in app_id_to_app,
* but we have the parameter for consistency and in case in the future
* they're not in the same data structure.
*/
for (iter = previous_results; iter; iter = iter->next)
{
const char *id = iter->data;
ShellAppInfo *info;
info = g_hash_table_lookup (system->priv->app_id_to_info, id);
if (!info)
continue;
shell_app_system_do_match (system, info, normalized_terms,
&multiple_prefix_results, &prefix_results,
&multiple_substring_results, &substring_results);
}
g_slist_foreach (normalized_terms, (GFunc)g_free, NULL);
g_slist_free (normalized_terms);
/* Note that a shorter term might have matched as a prefix, but
when extended only as a substring, so we have to redo the
sort rather than reusing the existing ordering */
return sort_and_concat_results (system, multiple_prefix_results, prefix_results, multiple_substring_results, substring_results);
}
const char *
shell_app_info_get_id (ShellAppInfo *info)
{
switch (info->type)
{
case SHELL_APP_INFO_TYPE_ENTRY:
return gmenu_tree_entry_get_desktop_file_id ((GMenuTreeEntry*)info->entry);
case SHELL_APP_INFO_TYPE_DESKTOP_FILE:
return info->keyfile_path;
case SHELL_APP_INFO_TYPE_WINDOW:
return info->window_id;
}
g_assert_not_reached ();
return NULL;
}
#define DESKTOP_ENTRY_GROUP "Desktop Entry"
char *
shell_app_info_get_name (ShellAppInfo *info)
{
switch (info->type)
{
case SHELL_APP_INFO_TYPE_ENTRY:
return g_strdup (gmenu_tree_entry_get_name ((GMenuTreeEntry*)info->entry));
case SHELL_APP_INFO_TYPE_DESKTOP_FILE:
return g_key_file_get_locale_string (info->keyfile, DESKTOP_ENTRY_GROUP, "Name", NULL, NULL);
case SHELL_APP_INFO_TYPE_WINDOW:
{
const char *name;
name = meta_window_get_wm_class (info->window);
if (!name)
name = _("Unknown");
return g_strdup (name);
}
}
g_assert_not_reached ();
return NULL;
}
char *
shell_app_info_get_description (ShellAppInfo *info)
{
switch (info->type)
{
case SHELL_APP_INFO_TYPE_ENTRY:
return g_strdup (gmenu_tree_entry_get_comment ((GMenuTreeEntry*)info->entry));
case SHELL_APP_INFO_TYPE_DESKTOP_FILE:
return g_key_file_get_locale_string (info->keyfile, DESKTOP_ENTRY_GROUP, "Comment", NULL, NULL);
case SHELL_APP_INFO_TYPE_WINDOW:
return NULL;
}
g_assert_not_reached ();
return NULL;
}
char *
shell_app_info_get_executable (ShellAppInfo *info)
{
switch (info->type)
{
case SHELL_APP_INFO_TYPE_ENTRY:
return g_strdup (gmenu_tree_entry_get_exec ((GMenuTreeEntry*)info->entry));
case SHELL_APP_INFO_TYPE_DESKTOP_FILE:
return g_key_file_get_string (info->keyfile, DESKTOP_ENTRY_GROUP, "Exec", NULL);
case SHELL_APP_INFO_TYPE_WINDOW:
return NULL;
}
g_assert_not_reached ();
return NULL;
}
char *
shell_app_info_get_desktop_file_path (ShellAppInfo *info)
{
switch (info->type)
{
case SHELL_APP_INFO_TYPE_ENTRY:
return g_strdup (gmenu_tree_entry_get_desktop_file_path ((GMenuTreeEntry*)info->entry));
case SHELL_APP_INFO_TYPE_DESKTOP_FILE:
return g_strdup (info->keyfile_path);
case SHELL_APP_INFO_TYPE_WINDOW:
return NULL;
}
g_assert_not_reached ();
return NULL;
}
static GIcon *
themed_icon_from_name (const char *iconname)
{
GIcon *icon;
if (!iconname)
return NULL;
if (g_path_is_absolute (iconname))
{
GFile *file;
file = g_file_new_for_path (iconname);
icon = G_ICON (g_file_icon_new (file));
g_object_unref (file);
}
else
{
char *tmp_name, *p;
tmp_name = strdup (iconname);
/* Work around a common mistake in desktop files */
if ((p = strrchr (tmp_name, '.')) != NULL &&
(strcmp (p, ".png") == 0 ||
strcmp (p, ".xpm") == 0 ||
strcmp (p, ".svg") == 0))
{
*p = 0;
}
icon = g_themed_icon_new (tmp_name);
g_free (tmp_name);
}
return icon;
}
/**
* shell_app_info_get_icon:
* @info: A #ShellAppInfo
*
* Get the #GIcon associated with this app; for apps "faked" from a #MetaWindow,
* return %NULL.
*
* Returns: (transfer full): The icon for @info, or %NULL
*/
GIcon *
shell_app_info_get_icon (ShellAppInfo *info)
{
char *iconname = NULL;
GIcon *icon;
/* This code adapted from gdesktopappinfo.c
* Copyright (C) 2006-2007 Red Hat, Inc.
* Copyright © 2007 Ryan Lortie
* LGPL
*/
switch (info->type)
{
case SHELL_APP_INFO_TYPE_ENTRY:
return themed_icon_from_name (gmenu_tree_entry_get_icon ((GMenuTreeEntry*)info->entry));
case SHELL_APP_INFO_TYPE_DESKTOP_FILE:
iconname = g_key_file_get_locale_string (info->keyfile, DESKTOP_ENTRY_GROUP, "Icon", NULL, NULL);
icon = themed_icon_from_name (iconname);
g_free (iconname);
return icon;
break;
case SHELL_APP_INFO_TYPE_WINDOW:
return NULL;
}
g_assert_not_reached ();
return NULL;
}
/**
* shell_app_system_get_sections:
*
* return names of sections in applications menu.
*
* Returns: (element-type utf8) (transfer full): List of Names
*/
GList *
shell_app_system_get_sections (ShellAppSystem *system)
{
GList *res = NULL;
GSList *i, *contents;
GMenuTreeDirectory *root;
root = gmenu_tree_get_root_directory (system->priv->apps_tree);
if (G_UNLIKELY (!root))
g_error ("applications.menu not found.");
contents = gmenu_tree_directory_get_contents (root);
for (i = contents; i; i = i->next)
{
GMenuTreeItem *item = i->data;
if (gmenu_tree_item_get_type (item) == GMENU_TREE_ITEM_DIRECTORY)
{
char *name = g_strdup (gmenu_tree_directory_get_name ((GMenuTreeDirectory*)item));
g_assert (name);
res = g_list_append (res, name);
}
gmenu_tree_item_unref (item);
}
g_slist_free (contents);
return res;
}
/**
* shell_app_info_get_section:
*
* return name of section, that contain this application.
* Returns: (transfer full): section name
*/
char *
shell_app_info_get_section (ShellAppInfo *info)
{
char *name;
GMenuTreeDirectory *dir, *parent;
if (info->type != SHELL_APP_INFO_TYPE_ENTRY)
return NULL;
dir = gmenu_tree_item_get_parent ((GMenuTreeItem*)info->entry);
if (!dir)
return NULL;
parent = gmenu_tree_item_get_parent ((GMenuTreeItem*)dir);
if (!parent)
return NULL;
while (TRUE)
{
GMenuTreeDirectory *pparent = gmenu_tree_item_get_parent ((GMenuTreeItem*)parent);
if (!pparent)
break;
gmenu_tree_item_unref ((GMenuTreeItem*)dir);
dir = parent;
parent = pparent;
}
name = g_strdup (gmenu_tree_directory_get_name (dir));
gmenu_tree_item_unref ((GMenuTreeItem*)dir);
gmenu_tree_item_unref ((GMenuTreeItem*)parent);
return name;
}
gboolean
shell_app_info_get_is_nodisplay (ShellAppInfo *info)
{
switch (info->type)
{
case SHELL_APP_INFO_TYPE_ENTRY:
return gmenu_tree_entry_get_is_nodisplay ((GMenuTreeEntry*)info->entry);
case SHELL_APP_INFO_TYPE_DESKTOP_FILE:
case SHELL_APP_INFO_TYPE_WINDOW:
return FALSE;
}
g_assert_not_reached ();
return TRUE;
}
/**
* shell_app_info_is_transient:
*
* A "transient" application is one which represents
* just an open window, i.e. we don't know how to launch it
* again.
*/
gboolean
shell_app_info_is_transient (ShellAppInfo *info)
{
return info->type == SHELL_APP_INFO_TYPE_WINDOW;
}
/**
* shell_app_info_create_icon_texture:
*
* Look up the icon for this application, and create a #ClutterTexture
* for it at the given size.
*
* Return value: (transfer none): A floating #ClutterActor
*/
ClutterActor *
shell_app_info_create_icon_texture (ShellAppInfo *info, float size)
{
GIcon *icon;
ClutterActor *ret;
ret = NULL;
if (info->type == SHELL_APP_INFO_TYPE_WINDOW)
{
ret = st_texture_cache_bind_pixbuf_property (st_texture_cache_get_default (),
G_OBJECT (info->window),
"icon");
}
else
{
icon = shell_app_info_get_icon (info);
if (icon != NULL)
{
ret = st_texture_cache_load_gicon (st_texture_cache_get_default (), NULL, icon, (int)size);
g_object_unref (icon);
}
}
if (ret == NULL)
{
icon = g_themed_icon_new ("application-x-executable");
ret = st_texture_cache_load_gicon (st_texture_cache_get_default (), NULL, icon, (int)size);
g_object_unref (icon);
}
return ret;
}
/**
* shell_app_info_get_source_window:
* @info: A #ShellAppInfo
*
* Returns: (transfer none): If @info is tracking a #MetaWindow,
* return that window. Otherwise, return %NULL.
*/
MetaWindow *
shell_app_info_get_source_window (ShellAppInfo *info)
{
if (info->type == SHELL_APP_INFO_TYPE_WINDOW)
return info->window;
return NULL;
}
static void
_gather_pid_callback (GDesktopAppInfo *gapp,
GPid pid,
gpointer data)
{
ShellApp *app;
ShellWindowTracker *tracker;
g_return_if_fail (data != NULL);
app = SHELL_APP (data);
tracker = shell_window_tracker_get_default ();
_shell_window_tracker_add_child_process_app (tracker,
pid,
app);
}
/**
* shell_app_info_launch_full:
* @timestamp: Event timestamp, or 0 for current event timestamp
* @uris: List of uris to pass to application
* @workspace: Start on this workspace, or -1 for default
* @startup_id: (out): Returned startup notification ID, or %NULL if none
* @error: A #GError
*/
gboolean
shell_app_info_launch_full (ShellAppInfo *info,
guint timestamp,
GList *uris,
int workspace,
char **startup_id,
GError **error)
{
ShellApp *shell_app;
GDesktopAppInfo *gapp;
GdkAppLaunchContext *context;
gboolean ret;
ShellGlobal *global;
MetaScreen *screen;
if (startup_id)
*startup_id = NULL;
if (info->type == SHELL_APP_INFO_TYPE_WINDOW)
{
/* We can't pass URIs into a window; shouldn't hit this
* code path. If we do, fix the caller to disallow it.
*/
g_return_val_if_fail (uris == NULL, TRUE);
meta_window_activate (info->window, timestamp);
return TRUE;
}
else if (info->type == SHELL_APP_INFO_TYPE_ENTRY)
{
/* Can't use g_desktop_app_info_new, see bug 614879 */
const char *filename = gmenu_tree_entry_get_desktop_file_path ((GMenuTreeEntry *)info->entry);
gapp = g_desktop_app_info_new_from_filename (filename);
}
else
{
char *filename = shell_app_info_get_desktop_file_path (info);
gapp = g_desktop_app_info_new_from_filename (filename);
g_free (filename);
}
if (!gapp)
{
g_set_error (error, G_IO_ERROR, G_IO_ERROR_NOT_FOUND, "Not found");
return FALSE;
}
global = shell_global_get ();
screen = shell_global_get_screen (global);
if (timestamp == 0)
timestamp = clutter_get_current_event_time ();
if (workspace < 0)
workspace = meta_screen_get_active_workspace_index (screen);
context = gdk_app_launch_context_new ();
gdk_app_launch_context_set_timestamp (context, timestamp);
gdk_app_launch_context_set_desktop (context, workspace);
shell_app = shell_app_system_get_app (shell_app_system_get_default (),
shell_app_info_get_id (info));
/* In the case where we know an app, we handle reaping the child internally,
* in the window tracker.
*/
if (shell_app != NULL)
ret = g_desktop_app_info_launch_uris_as_manager (gapp, uris,
G_APP_LAUNCH_CONTEXT (context),
G_SPAWN_SEARCH_PATH | G_SPAWN_DO_NOT_REAP_CHILD,
NULL, NULL,
_gather_pid_callback, shell_app,
error);
else
ret = g_desktop_app_info_launch_uris_as_manager (gapp, uris,
G_APP_LAUNCH_CONTEXT (context),
G_SPAWN_SEARCH_PATH,
NULL, NULL,
NULL, NULL,
error);
g_object_unref (G_OBJECT (gapp));
return ret;
}
gboolean
shell_app_info_launch (ShellAppInfo *info,
GError **error)
{
return shell_app_info_launch_full (info, 0, NULL, -1, NULL, error);
}
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