/* The active window has changed */
static void _xfdashboard_application_tracker_on_active_window_changed(XfdashboardApplicationTracker *self,
XfdashboardWindowTrackerWindow *inOldActiveWindow,
XfdashboardWindowTrackerWindow *inNewActiveWindow,
gpointer inUserData)
{
XfdashboardApplicationTrackerItem *item;
g_return_if_fail(XFDASHBOARD_IS_APPLICATION_TRACKER(self));
g_return_if_fail(XFDASHBOARD_IS_WINDOW_TRACKER_WINDOW(inNewActiveWindow));
/* Find application tracker item in list of known running applications
* matching the new active window.
*/
item= _xfdashboard_application_tracker_find_item_by_window(self, inNewActiveWindow);
if(!item)
{
g_debug("Could not find running application for new active window '%s'",
xfdashboard_window_tracker_window_get_title(inNewActiveWindow));
return;
}
g_debug("New active window is '%s' and belongs to desktop ID '%s'",
xfdashboard_window_tracker_window_get_title(inNewActiveWindow),
item->desktopID);
/* Move new active window of found application tracker item to begin of
* list of windows by removing window from list and prepending it to list
* again. This will sort the list of window in order of last activation.
* That means the first window in list was the last active one for this
* application.
*/
item->windows=g_list_remove(item->windows, inNewActiveWindow);
item->windows=g_list_prepend(item->windows, inNewActiveWindow);
}
/* A window was created */
static void _xfdashboard_application_tracker_on_window_opened(XfdashboardApplicationTracker *self,
XfdashboardWindowTrackerWindow *inWindow,
gpointer inUserData)
{
XfdashboardApplicationTrackerPrivate *priv;
GAppInfo *appInfo;
XfdashboardApplicationTrackerItem *item;
g_return_if_fail(XFDASHBOARD_IS_APPLICATION_TRACKER(self));
g_return_if_fail(XFDASHBOARD_IS_WINDOW_TRACKER_WINDOW(inWindow));
priv=self->priv;
appInfo=NULL;
/* Try to find application for window */
appInfo=_xfdashboard_application_tracker_get_desktop_id_from_environment(self, inWindow);
if(!appInfo) appInfo=_xfdashboard_application_tracker_get_desktop_id_from_window_names(self, inWindow);
/* If we could not resolve window to a desktop application info, then stop here */
if(!appInfo)
{
g_debug("Could not resolve window '%s' to any desktop ID",
xfdashboard_window_tracker_window_get_title(inWindow));
return;
}
g_debug("Window '%s' belongs to desktop ID '%s'",
xfdashboard_window_tracker_window_get_title(inWindow),
g_app_info_get_id(appInfo));
/* Create application tracker if no one exists for application and window ... */
item= _xfdashboard_application_tracker_find_item_by_app_info(self, appInfo);
if(!item)
{
/* Create application tracker item */
item=_xfdashboard_application_tracker_item_new(appInfo, inWindow);
/* Add new item to list of running applications */
priv->runningApps=g_list_prepend(priv->runningApps, item);
/* Emit signal as this application is known to be running now */
g_debug("Emitting signal 'state-changed' to running for desktop ID '%s'", item->desktopID);
g_signal_emit(self, XfdashboardApplicationTrackerSignals[SIGNAL_STATE_CHANGED], g_quark_from_string(item->desktopID), item->desktopID, TRUE);
}
/* ... otherwise add window to existing one */
else
{
/* Add window to list of window for known running application */
_xfdashboard_application_tracker_item_add_window(item, inWindow);
}
/* Release allocated resources */
if(appInfo) g_object_unref(appInfo);
}
/* A window was closed */
static void _xfdashboard_application_tracker_on_window_closed(XfdashboardApplicationTracker *self,
XfdashboardWindowTrackerWindow *inWindow,
gpointer inUserData)
{
XfdashboardApplicationTrackerPrivate *priv;
XfdashboardApplicationTrackerItem *item;
g_return_if_fail(XFDASHBOARD_IS_APPLICATION_TRACKER(self));
g_return_if_fail(XFDASHBOARD_IS_WINDOW_TRACKER_WINDOW(inWindow));
priv=self->priv;
/* Find application tracker item in list of known running applications
* matching the window just closed.
*/
item= _xfdashboard_application_tracker_find_item_by_window(self, inWindow);
if(!item)
{
g_debug("Could not find running application for window '%s'",
xfdashboard_window_tracker_window_get_title(inWindow));
return;
}
g_debug("Closing window '%s' for desktop ID '%s'",
xfdashboard_window_tracker_window_get_title(inWindow),
item->desktopID);
/* Remove window from found application tracker item */
_xfdashboard_application_tracker_item_remove_window(item, inWindow);
/* If it was the last window then application is not running anymore
* because it has no window.
*/
if(!item->windows ||
g_list_length(item->windows)==0)
{
gchar *desktopID;
g_debug("Closing window '%s' for desktop ID '%s' closed last window so remove application from list of running ones",
xfdashboard_window_tracker_window_get_title(inWindow),
item->desktopID);
/* Create a copy of desktop ID for signal emission because the
* application tracker item will be removed and freed before.
*/
desktopID=g_strdup(item->desktopID);
/* Remove application tracker item from list of running applications
* and free it.
*/
priv->runningApps=g_list_remove(priv->runningApps, item);
_xfdashboard_application_tracker_item_free(item);
/* Emit signal as this application is not running anymore */
g_debug("Emitting signal 'state-changed' to stopped for desktop ID '%s'", desktopID);
g_signal_emit(self, XfdashboardApplicationTrackerSignals[SIGNAL_STATE_CHANGED], g_quark_from_string(desktopID), desktopID, FALSE);
/* Release allocated resources */
g_free(desktopID);
}
}
/* Get desktop ID from window names.
* Callee is responsible to free result with g_object_unref().
*/
static GAppInfo* _xfdashboard_application_tracker_get_desktop_id_from_window_names(XfdashboardApplicationTracker *self,
XfdashboardWindowTrackerWindow *inWindow)
{
XfdashboardApplicationTrackerPrivate *priv;
GAppInfo *foundAppInfo;
gchar **names;
gchar **iter;
g_return_val_if_fail(XFDASHBOARD_IS_APPLICATION_TRACKER(self), NULL);
g_return_val_if_fail(XFDASHBOARD_IS_WINDOW_TRACKER_WINDOW(inWindow), NULL);
priv=self->priv;
foundAppInfo=NULL;
/* Get window's names */
names=xfdashboard_window_tracker_window_get_instance_names(inWindow);
/* Iterate through window's names to try to find matching desktop file */
iter=names;
while(iter && *iter)
{
GAppInfo *appInfo;
/* Lookup application from unmodified name */
if(g_str_has_suffix(*iter, ".desktop"))
{
appInfo=xfdashboard_application_database_lookup_desktop_id(priv->appDatabase, *iter);
}
else
{
gchar *desktopID;
desktopID=g_strconcat(*iter, ".desktop", NULL);
appInfo=xfdashboard_application_database_lookup_desktop_id(priv->appDatabase, desktopID);
g_free(desktopID);
}
/* Lookup application from to-lower-case converted name if previous
* lookup with unmodified name failed.
*/
if(!appInfo)
{
gchar *lowerDesktopID;
/* Convert name to lower case */
lowerDesktopID=g_utf8_strdown(*iter, -1);
/* Lookup application from lower-case name. No need to add '.desktop'
* as suffix as it was done before.
*/
if(g_str_has_suffix(lowerDesktopID, ".desktop"))
{
appInfo=xfdashboard_application_database_lookup_desktop_id(priv->appDatabase, lowerDesktopID);
}
else
{
gchar *desktopID;
desktopID=g_strconcat(lowerDesktopID, ".desktop", NULL);
appInfo=xfdashboard_application_database_lookup_desktop_id(priv->appDatabase, desktopID);
g_free(desktopID);
}
/* Free lower case of name */
g_free(lowerDesktopID);
/* If we still did not find an application continue with next
* name in list.
*/
if(!appInfo)
{
/* Continue with next name in list */
iter++;
continue;
}
}
/* Check if found application info matches previous one. If it does not match
* the desktop IDs found previously are ambigous, so return NULL result.
*/
if(foundAppInfo &&
!g_app_info_equal(foundAppInfo, appInfo))
{
g_debug("Resolved window names of '%s' are ambiguous - discarding desktop IDs '%s' and '%s'",
xfdashboard_window_tracker_window_get_title(inWindow),
g_app_info_get_id(foundAppInfo),
g_app_info_get_id(appInfo));
/* Release allocated resources */
if(foundAppInfo) g_object_unref(foundAppInfo);
if(appInfo) g_object_unref(appInfo);
if(names) g_strfreev(names);
return(NULL);
}
/* If it is the first application info found, remember it */
if(!foundAppInfo) foundAppInfo=g_object_ref(appInfo);
/* Release allocated resources */
if(appInfo) g_object_unref(appInfo);
/* Continue with next name in list */
iter++;
}
/* Release allocated resources */
if(names) g_strfreev(names);
/* Return found application info */
g_debug("Resolved window names of '%s' to desktop ID '%s'",
xfdashboard_window_tracker_window_get_title(inWindow),
foundAppInfo ? g_app_info_get_id(foundAppInfo) : "<nil>");
return(foundAppInfo);
}
/* Get desktop ID from process' environment which owns window.
* Callee is responsible to free result with g_object_unref().
*/
static GAppInfo* _xfdashboard_application_tracker_get_desktop_id_from_environment(XfdashboardApplicationTracker *self,
XfdashboardWindowTrackerWindow *inWindow)
{
XfdashboardApplicationTrackerPrivate *priv;
GAppInfo *foundAppInfo;
gint windowPID;
gchar *procEnvFile;
gchar *envContent;
gsize envLength;
GError *error;
gchar *iter;
const gchar *gioLaunchedPID;
const gchar *gioLaunchedDesktopFile;
g_return_val_if_fail(XFDASHBOARD_IS_APPLICATION_TRACKER(self), NULL);
g_return_val_if_fail(XFDASHBOARD_IS_WINDOW_TRACKER_WINDOW(inWindow), NULL);
priv=self->priv;
foundAppInfo=NULL;
error=NULL;
/* Get process ID running this window */
windowPID=xfdashboard_window_tracker_window_get_pid(inWindow);
if(windowPID<=0)
{
g_debug("Could not get PID for window '%s' of a running application to parse environment variables",
xfdashboard_window_tracker_window_get_title(inWindow));
return(NULL);
}
/* Open enviroment variables of process.
* This is the initial set of environment variables set when process was spawned.
* But that is ok because the environment variables we lookup are set
* at launch time and do not change.
*/
envContent=NULL;
envLength=0;
procEnvFile=g_strdup_printf("/proc/%d/environ", windowPID);
if(!g_file_get_contents(procEnvFile, &envContent, &envLength, &error))
{
g_debug("Could read in enviroment varibles for PID %d of window '%s' at %s: %s",
windowPID,
xfdashboard_window_tracker_window_get_title(inWindow),
procEnvFile,
error ? error->message : _("Unknown error"));
/* Release allocated resources */
if(error) g_error_free(error);
if(procEnvFile) g_free(procEnvFile);
if(envContent) g_free(envContent);
/* Return NULL result */
return(NULL);
}
g_debug("Enviroment set at %s is %lu bytes long for window '%s'",
procEnvFile,
envLength,
xfdashboard_window_tracker_window_get_title(inWindow));
/* Iterate through enviroment variables and lookup GIO_LAUNCHED_DESKTOP_FILE
* and GIO_LAUNCHED_DESKTOP_FILE_PID.
*/
gioLaunchedPID=NULL;
gioLaunchedDesktopFile=NULL;
iter=envContent;
while(envLength>0)
{
gsize len;
/* Skip NULL-termination */
if(!*iter)
{
envLength--;
iter++;
continue;
}
/* Check current iterated enviroment variable matches a requested one */
if(g_str_has_prefix(iter, "GIO_LAUNCHED_DESKTOP_FILE="))
{
/* Each enviroment variable should be listed only once
* otherwise is an error.
*/
if(gioLaunchedDesktopFile)
{
g_debug("Could parse in enviroment varibles for PID %d of window '%s' at %s because GIO_LAUNCHED_DESKTOP_FILE exists more than once",
windowPID,
xfdashboard_window_tracker_window_get_title(inWindow),
procEnvFile);
/* Release allocated resources */
if(foundAppInfo) g_object_unref(foundAppInfo);
if(procEnvFile) g_free(procEnvFile);
if(envContent) g_free(envContent);
/* Return NULL result */
return(NULL);
}
/* Remember value of environment variable */
gioLaunchedDesktopFile=iter;
}
else if(g_str_has_prefix(iter, "GIO_LAUNCHED_DESKTOP_FILE_PID="))
{
/* Each enviroment variable should be listed only once
* otherwise is an error.
*/
if(gioLaunchedPID)
{
g_debug("Could parse in enviroment varibles for PID %d of window '%s' at %s because GIO_LAUNCHED_DESKTOP_FILE_PID exists more than once",
windowPID,
xfdashboard_window_tracker_window_get_title(inWindow),
procEnvFile);
/* Release allocated resources */
if(foundAppInfo) g_object_unref(foundAppInfo);
if(procEnvFile) g_free(procEnvFile);
if(envContent) g_free(envContent);
/* Return NULL result */
return(NULL);
}
/* Remember value of environment variable */
gioLaunchedPID=iter;
}
/* If all requested environment variable has been found stop iterating */
if(gioLaunchedPID && gioLaunchedDesktopFile) break;
/* Continue with next environment variable */
len=strlen(iter);
iter+=len;
envLength-=len;
}
/* If all requested environment variable has been found then check if
* GIO_LAUNCHED_DESKTOP_FILE_PID matches window owner's process ID.
*/
if(gioLaunchedPID && gioLaunchedDesktopFile)
{
/* Move pointer of environment variables to value */
while(*gioLaunchedPID && *gioLaunchedPID!='=') gioLaunchedPID++;
while(*gioLaunchedDesktopFile && *gioLaunchedDesktopFile!='=') gioLaunchedDesktopFile++;
/* Check if pointers points to value assignment character */
if(*gioLaunchedPID=='=' &&
*gioLaunchedDesktopFile=='=')
{
gint checkPID;
/* Move pointer one byte further where value begins really */
gioLaunchedPID++;
gioLaunchedDesktopFile++;
/* Check if PID of enviroment variable matches window owner's
* process ID.
*/
checkPID=atoi(gioLaunchedPID);
if(checkPID==windowPID)
{
/* Lookup application from full path */
foundAppInfo=xfdashboard_application_database_lookup_desktop_id(priv->appDatabase, gioLaunchedDesktopFile);
if(!foundAppInfo)
{
/* Lookup application from basename of path */
gioLaunchedDesktopFile=g_strrstr(gioLaunchedDesktopFile, G_DIR_SEPARATOR_S);
if(gioLaunchedDesktopFile)
{
gioLaunchedDesktopFile++;
foundAppInfo=xfdashboard_application_database_lookup_desktop_id(priv->appDatabase, gioLaunchedDesktopFile);
}
}
}
else
{
g_debug("PID %d of environment variable does not match window PID %d for '%s'",
checkPID,
windowPID,
xfdashboard_window_tracker_window_get_title(inWindow));
}
}
}
/* Release allocated resources */
if(procEnvFile) g_free(procEnvFile);
if(envContent) g_free(envContent);
/* Return found application info */
g_debug("Resolved enviroment variables of window '%s' to desktop ID '%s'",
xfdashboard_window_tracker_window_get_title(inWindow),
foundAppInfo ? g_app_info_get_id(foundAppInfo) : "<nil>");
return(foundAppInfo);
}
/* Get desktop ID from window names.
* Callee is responsible to free result with g_object_unref().
*/
static GAppInfo* _xfdashboard_application_tracker_get_desktop_id_from_window_names(XfdashboardApplicationTracker *self,
XfdashboardWindowTrackerWindow *inWindow)
{
XfdashboardApplicationTrackerPrivate *priv;
GAppInfo *foundAppInfo;
gchar **names;
gchar **iter;
GList *apps;
g_return_val_if_fail(XFDASHBOARD_IS_APPLICATION_TRACKER(self), NULL);
g_return_val_if_fail(XFDASHBOARD_IS_WINDOW_TRACKER_WINDOW(inWindow), NULL);
priv=self->priv;
foundAppInfo=NULL;
/* Get list of applications */
apps=xfdashboard_application_database_get_all_applications(priv->appDatabase);
/* Get window's names */
names=xfdashboard_window_tracker_window_get_instance_names(inWindow);
/* Iterate through window's names to try to find matching desktop file */
iter=names;
while(iter && *iter)
{
GAppInfo *appInfo;
gchar *iterName;
gchar *iterNameLowerCase;
/* Build desktop ID from iterated name */
if(!g_str_has_suffix(*iter, ".desktop")) iterName=g_strconcat(*iter, ".desktop", NULL);
else iterName=g_strdup(*iter);
iterNameLowerCase=g_utf8_strdown(iterName, -1);
/* Lookup application from unmodified name */
appInfo=xfdashboard_application_database_lookup_desktop_id(priv->appDatabase, iterName);
/* Lookup application from to-lower-case converted name if previous
* lookup with unmodified name failed.
*/
if(!appInfo)
{
/* Lookup application from lower-case name */
appInfo=xfdashboard_application_database_lookup_desktop_id(priv->appDatabase, iterNameLowerCase);
}
/* If no application was found for the name it may be an application
* located in a subdirectory. Then the desktop ID is prefixed with
* the subdirectory's name followed by a dash. So iterate through all
* applications and lookup with glob pattern '*-' followed by name
* and suffix '.desktop'.
*/
if(!appInfo)
{
GList *iterApps;
GList *foundSubdirApps;
gchar *globName;
GPatternSpec *globPattern;
GAppInfo *globAppInfo;
/* Build glob pattern */
globAppInfo=NULL;
globName=g_strconcat("*-", iterNameLowerCase, NULL);
globPattern=g_pattern_spec_new(globName);
/* Iterate through application and collect applications matching
* glob pattern.
*/
foundSubdirApps=NULL;
for(iterApps=apps; iterApps; iterApps=g_list_next(iterApps))
{
if(!G_IS_APP_INFO(iterApps->data)) continue;
globAppInfo=G_APP_INFO(iterApps->data);
if(g_pattern_match_string(globPattern, g_app_info_get_id(globAppInfo)))
{
foundSubdirApps=g_list_prepend(foundSubdirApps, globAppInfo);
g_debug("Found possible application '%s' for window '%s' using pattern '%s'",
g_app_info_get_id(globAppInfo),
xfdashboard_window_tracker_window_get_title(inWindow),
globName);
}
}
/* If exactly one application was collected because it matched
* the glob pattern then we found the application.
*/
if(g_list_length(foundSubdirApps)==1)
{
appInfo=G_APP_INFO(g_object_ref(G_OBJECT(foundSubdirApps->data)));
g_debug("Found exactly one application named '%s' for window '%s' using pattern '%s'",
g_app_info_get_id(appInfo),
xfdashboard_window_tracker_window_get_title(inWindow),
globName);
}
/* Release allocated resources */
if(foundSubdirApps) g_list_free(foundSubdirApps);
if(globPattern) g_pattern_spec_free(globPattern);
if(globName) g_free(globName);
}
/* If we still did not find an application continue with next
* name in list.
*/
if(!appInfo)
{
/* Release allocated resources */
if(iterName) g_free(iterName);
if(iterNameLowerCase) g_free(iterNameLowerCase);
/* Continue with next name in list */
iter++;
continue;
}
/* Check if found application info matches previous one. If it does not match
* the desktop IDs found previously are ambigous, so return NULL result.
*/
if(foundAppInfo &&
!g_app_info_equal(foundAppInfo, appInfo))
{
g_debug("Resolved window names of '%s' are ambiguous - discarding desktop IDs '%s' and '%s'",
xfdashboard_window_tracker_window_get_title(inWindow),
g_app_info_get_id(foundAppInfo),
g_app_info_get_id(appInfo));
/* Release allocated resources */
if(iterName) g_free(iterName);
if(iterNameLowerCase) g_free(iterNameLowerCase);
if(foundAppInfo) g_object_unref(foundAppInfo);
if(appInfo) g_object_unref(appInfo);
if(names) g_strfreev(names);
if(apps) g_list_free_full(apps, g_object_unref);
return(NULL);
}
/* If it is the first application info found, remember it */
if(!foundAppInfo) foundAppInfo=g_object_ref(appInfo);
/* Release allocated resources */
if(iterName) g_free(iterName);
if(iterNameLowerCase) g_free(iterNameLowerCase);
if(appInfo) g_object_unref(appInfo);
/* Continue with next name in list */
iter++;
}
/* Release allocated resources */
if(names) g_strfreev(names);
if(apps) g_list_free_full(apps, g_object_unref);
/* Return found application info */
g_debug("Resolved window names of '%s' to desktop ID '%s'",
xfdashboard_window_tracker_window_get_title(inWindow),
foundAppInfo ? g_app_info_get_id(foundAppInfo) : "<nil>");
return(foundAppInfo);
}
/* Get desktop ID from process' environment which owns window.
* Callee is responsible to free result with g_object_unref().
*/
static GAppInfo* _xfdashboard_application_tracker_get_desktop_id_from_environment(XfdashboardApplicationTracker *self,
XfdashboardWindowTrackerWindow *inWindow)
{
XfdashboardApplicationTrackerPrivate *priv;
GAppInfo *foundAppInfo;
gint windowPID;
GHashTable *environments;
gchar *value;
gint checkPID;
g_return_val_if_fail(XFDASHBOARD_IS_APPLICATION_TRACKER(self), NULL);
g_return_val_if_fail(XFDASHBOARD_IS_WINDOW_TRACKER_WINDOW(inWindow), NULL);
priv=self->priv;
foundAppInfo=NULL;
/* Get process ID running this window */
windowPID=xfdashboard_window_tracker_window_get_pid(inWindow);
if(windowPID<=0)
{
g_debug("Could not get PID for window '%s' of a running application to parse environment variables",
xfdashboard_window_tracker_window_get_title(inWindow));
/* Return NULL result */
return(NULL);
}
/* Get hash-table with environment variables found for window's PID */
environments=_xfdashboard_application_tracker_get_environment_from_pid(windowPID);
if(!environments)
{
g_debug("Could not get environments for PID %d of windows '%s'",
windowPID,
xfdashboard_window_tracker_window_get_title(inWindow));
/* Return NULL result */
return(NULL);
}
/* Check that environment variable GIO_LAUNCHED_DESKTOP_FILE_PID exists.
* Also check that the PID in value matches the requested window's PID
* as the process may inherit the environments of its parent process
* but then this one is not the initial process for this application.
*/
if(!g_hash_table_lookup_extended(environments, "GIO_LAUNCHED_DESKTOP_FILE_PID", NULL, (gpointer)&value))
{
g_debug("Missing 'GIO_LAUNCHED_DESKTOP_FILE_PID' in environment variables for PID %d of windows '%s'",
windowPID,
xfdashboard_window_tracker_window_get_title(inWindow));
/* Release allocated resources */
if(environments) g_hash_table_destroy(environments);
/* Return NULL result */
return(NULL);
}
checkPID=atoi(value);
if(checkPID!=windowPID)
{
g_debug("PID %d of environment variables does not match requested window PID %d for '%s'",
checkPID,
windowPID,
xfdashboard_window_tracker_window_get_title(inWindow));
/* Release allocated resources */
if(environments) g_hash_table_destroy(environments);
/* Return NULL result */
return(NULL);
}
/* Check that environment variable GIO_LAUNCHED_DESKTOP_FILE exists and
* lookup application from full path as set in environment's value.
*/
if(!g_hash_table_lookup_extended(environments, "GIO_LAUNCHED_DESKTOP_FILE", NULL, (gpointer)&value))
{
g_debug("Missing 'GIO_LAUNCHED_DESKTOP_FILE' in environment variables for PID %d of windows '%s'",
windowPID,
xfdashboard_window_tracker_window_get_title(inWindow));
/* Release allocated resources */
if(environments) g_hash_table_destroy(environments);
/* Return NULL result */
return(NULL);
}
foundAppInfo=xfdashboard_application_database_lookup_desktop_id(priv->appDatabase, value);
if(!foundAppInfo)
{
/* Lookup application from basename of path */
value=g_strrstr(value, G_DIR_SEPARATOR_S);
if(value)
{
value++;
foundAppInfo=xfdashboard_application_database_lookup_desktop_id(priv->appDatabase, value);
}
}
/* Release allocated resources */
if(environments) g_hash_table_destroy(environments);
/* Return found application info which may be NULL if not found in
* application database.
*/
g_debug("Resolved enviroment variables of window '%s' to desktop ID '%s'",
xfdashboard_window_tracker_window_get_title(inWindow),
foundAppInfo ? g_app_info_get_id(foundAppInfo) : "<nil>");
return(foundAppInfo);
}
