browser: add root dir option, load only one file on restore

artiq/browser/files.py

@@ -57,7 +57,8 @@ class DirsOnlyProxy(QtCore.QSortFilterProxyModel):
 
 
 class FilesDock(QtWidgets.QDockWidget):
-    def __init__(self, datasets, main_window, root=""):
+    def __init__(self, datasets, main_window, root="",
+                 select_file=None):
         QtWidgets.QDockWidget.__init__(self, "Files")
         self.setObjectName("Files")
         self.setFeatures(self.DockWidgetMovable | self.DockWidgetFloatable)
@@ -67,6 +68,7 @@ class FilesDock(QtWidgets.QDockWidget):
 
         self.datasets = datasets
         self.main_window = main_window
+        self.override_restore_file = select_file
 
         self.model = QtWidgets.QFileSystemModel()
         self.model.setFilter(QtCore.QDir.Drives | QtCore.QDir.NoDotAndDotDot |
@@ -180,9 +182,12 @@ class FilesDock(QtWidgets.QDockWidget):
         dir = state.get("dir")
         if dir:
             self.select_dir(dir)
-        file = state.get("file")
-        if file:
-            self.select_file(file)
+        if self.override_restore_file:
+            self.select_file(os.path.normpath(self.override_restore_file))
+        else:
+            file = state.get("file")
+            if file:
+                self.select_file(file)
         header = state.get("header")
         if header:
             self.rt.header().restoreState(QtCore.QByteArray(header))

artiq/frontend/artiq_browser.py

@@ -21,10 +21,12 @@ def get_argparser():
         default_db_file = os.path.expanduser("~/.artiq_browser.pyon")
 
     parser = argparse.ArgumentParser(description="ARTIQ Browser")
-    parser.add_argument(
-        "--db-file", default=default_db_file,
-        help="database file for local browser settings "
-             "(default: %(default)s)")
+    parser.add_argument("--db-file", default=default_db_file,
+                        help="database file for local browser settings "
+                        "(default: %(default)s)")
+    parser.add_argument("--root", default="",
+                        help="root path for directory tree "
+                        "(default %(default)s)")
     parser.add_argument("PATH", nargs="?", help="browse path or file")
     verbosity_args(parser)
     return parser
@@ -90,7 +92,8 @@ def main():
     status_bar = QtWidgets.QStatusBar()
     main_window.setStatusBar(status_bar)
 
-    d_files = files.FilesDock(datasets_sub, main_window)
+    d_files = files.FilesDock(datasets_sub, main_window, args.root,
+                              args.PATH)
     smgr.register(d_files)
 
     d_applets = applets.AppletsDock(main_window, datasets_sub)
@@ -124,9 +127,6 @@ def main():
     # run
     main_window.show()
 
-    if args.PATH:
-        d_files.select_file(os.path.normpath(args.PATH))
-
     loop.run_until_complete(main_window.exit_request.wait())
 
 if __name__ == "__main__":