def __init__(self):
QObject.__init__(self)
self.file_watcher = QFileSystemWatcher()
self.file_watcher.fileChanged.connect(self.on_file_changed)
self.changed = {}
self.launches = {}
self.binaries = {}
def __init__(self):
QObject.__init__(self)
self.file_watcher = QFileSystemWatcher()
self.file_watcher.fileChanged.connect(self.on_file_changed)
self.changed = {}
self.launches = {}
self.binaries = {}
class FileWatcher(QObject):
'''
A class to watch for file changes.
'''
config_changed = Signal(str, list)
'''@ivar: a signal to inform the receiver about the changes on
launch file or included file.
ParameterB{:} (changed file, list of tuples(masteruri, launch file))'''
binary_changed = Signal(str, list)
'''@ivar: a signal to inform the receiver about the changes on
binary file or included file.
ParameterB{:} (binary file, list of tuples(node name, masteruri, launchfile))
'''
def __init__(self):
QObject.__init__(self)
self.file_watcher = QFileSystemWatcher()
self.file_watcher.fileChanged.connect(self.on_file_changed)
self.changed = {}
self.launches = {}
self.binaries = {}
def __del__(self):
# Delete to avoid segfault if the LaunchConfig class is destroyed recently
# after creation and xmlrpclib.ServerProxy process a method call.
del self.file_watcher
def on_file_changed(self, filepath):
'''
callback method, which is called by U{QtCore.QFileSystemWatcher<https://srinikom.github.io/pyside-docs/PySide/QtCore/QFileSystemWatcher.html>}
if one of a launch file, included files or binary are changed.
Depend on type of the file a L{FileWatcher.config_changed} or
L{FileWatcher.binary_changed} signal will be emitted.
'''
# to avoid to handle from QFileSystemWatcher fired the signal two times
if (filepath not in self.changed
or (filepath in self.changed
and self.changed[filepath] + 0.05 < time.time())):
self.changed[filepath] = time.time()
launch_changes = []
for (uri, lfile, _), files in self.launches.items(): # _:=id
if filepath in files:
launch_changes.append((uri, lfile))
if launch_changes:
self.config_changed.emit(filepath, launch_changes)
binaries_changed = []
for node_name, (binary_file, masteruri,
launchfile) in self.binaries.items():
if filepath == binary_file:
binaries_changed.append((node_name, masteruri, launchfile))
if binaries_changed:
self.binary_changed.emit(filepath, binaries_changed)
def add_launch(self, masteruri, launch_file, launch_id, files):
if (masteruri, launch_file, launch_id) in self.launches:
self.launches[(masteruri, launch_file, launch_id)].extend(
[os.path.normpath(f) for f in files])
else:
self.launches[(masteruri, launch_file,
launch_id)] = [os.path.normpath(f) for f in files]
self.update_files()
def rem_launch(self, masteruri, launch_file='', launch_id=''):
try:
if launch_file:
if launch_id:
del self.launches[(masteruri, launch_file, launch_id)]
else:
for (uri, cfgfile, cfgid), _ in self.launches.items():
if uri == masteruri and cfgfile == launch_file:
del self.launches[(uri, cfgfile, cfgid)]
else:
for (uri, cfgfile, cfgid), _ in self.launches.items():
if uri == masteruri:
del self.launches[(uri, cfgfile, cfgid)]
except:
pass
self.update_files()
def add_binary(self, binary_file, node_name, masteruri, launchfile):
self.binaries[node_name] = (binary_file, masteruri, launchfile)
self.update_files()
def rem_binary(self, node_name):
try:
del self.binaries[node_name]
self.update_files()
except:
pass
def update_files(self):
result = set()
for files in self.launches.itervalues():
result.update(set(files))
binaries = set()
for _, (binary_file, _, _) in self.binaries.items():
binaries.add(binary_file)
result.update(binaries)
files = self.file_watcher.files()
if files:
self.file_watcher.removePaths(files)
if list(result):
self.file_watcher.addPaths(list(result))
class FileWatcher(QObject):
'''
A class to watch for file changes.
'''
config_changed = Signal(str, list)
'''@ivar: a signal to inform the receiver about the changes on
launch file or included file.
ParameterB{:} (changed file, list of tuples(masteruri, launch file))'''
binary_changed = Signal(str, list)
'''@ivar: a signal to inform the receiver about the changes on
binary file or included file.
ParameterB{:} (binary file, list of tuples(node name, masteruri, launchfile))
'''
def __init__(self):
QObject.__init__(self)
self.file_watcher = QFileSystemWatcher()
self.file_watcher.fileChanged.connect(self.on_file_changed)
self.changed = {}
self.launches = {}
self.binaries = {}
def __del__(self):
# Delete to avoid segfault if the LaunchConfig class is destroyed recently
# after creation and xmlrpclib.ServerProxy process a method call.
del self.file_watcher
def on_file_changed(self, filepath):
'''
callback method, which is called by L{QtCore.QFileSystemWatcher} if the
launch file or included files are changed. In this case
L{FileWatcher.file_changed} signal will be emitted.
'''
# to avoid to handle from QFileSystemWatcher fired the signal two times
if (filepath not in self.changed or (filepath in self.changed and self.changed[filepath] + 0.05 < time.time())):
self.changed[filepath] = time.time()
launch_changes = []
for (uri, lfile, _), files in self.launches.items(): # _:=id
if filepath in files:
launch_changes.append((uri, lfile))
if launch_changes:
self.config_changed.emit(filepath, launch_changes)
binaries_changed = []
for node_name, (binary_file, masteruri, launchfile) in self.binaries.items():
if filepath == binary_file:
binaries_changed.append((node_name, masteruri, launchfile))
if binaries_changed:
self.binary_changed.emit(filepath, binaries_changed)
def add_launch(self, masteruri, launch_file, launch_id, files):
if (masteruri, launch_file, launch_id) in self.launches:
self.launches[(masteruri, launch_file, launch_id)].extend([os.path.normpath(f) for f in files])
else:
self.launches[(masteruri, launch_file, launch_id)] = [os.path.normpath(f) for f in files]
self.update_files()
def rem_launch(self, masteruri, launch_file='', launch_id=''):
try:
if launch_file:
if launch_id:
del self.launches[(masteruri, launch_file, launch_id)]
else:
for (uri, cfgfile, cfgid), _ in self.launches.items():
if uri == masteruri and cfgfile == launch_file:
del self.launches[(uri, cfgfile, cfgid)]
else:
for (uri, cfgfile, cfgid), _ in self.launches.items():
if uri == masteruri:
del self.launches[(uri, cfgfile, cfgid)]
except:
pass
self.update_files()
def add_binary(self, binary_file, node_name, masteruri, launchfile):
self.binaries[node_name] = (binary_file, masteruri, launchfile)
self.update_files()
def rem_binary(self, node_name):
try:
del self.binaries[node_name]
self.update_files()
except:
pass
def update_files(self):
result = set()
for files in self.launches.itervalues():
result.update(set(files))
binaries = set()
for _, (binary_file, _, _) in self.binaries.items():
binaries.add(binary_file)
result.update(binaries)
files = self.file_watcher.files()
if files:
self.file_watcher.removePaths(files)
if list(result):
self.file_watcher.addPaths(list(result))
