browser: permanently show results' metadata, closes #471

artiq/browser/datasets.py

@@ -43,8 +43,20 @@ class DatasetsDock(QtWidgets.QDockWidget):
             QtWidgets.QAbstractItemView.SingleSelection)
         grid.addWidget(self.table, 1, 0)
 
+        metadata_grid = LayoutWidget()
+        self.metadata = {}
+        for i, label in enumerate("artiq_version repo_rev file class_name "
+                                  "rid start_time".split()):
+            metadata_grid.addWidget(QtWidgets.QLabel(label), i, 0)
+            v = QtWidgets.QLabel()
+            v.setTextInteractionFlags(QtCore.Qt.TextSelectableByMouse)
+            metadata_grid.addWidget(v, i, 1)
+            self.metadata[label] = v
+        grid.addWidget(metadata_grid, 2, 0)
+
         self.table.setContextMenuPolicy(QtCore.Qt.ActionsContextMenu)
-        upload_action = QtWidgets.QAction("Upload dataset to master", self.table)
+        upload_action = QtWidgets.QAction("Upload dataset to master",
+                                          self.table)
         upload_action.triggered.connect(self.upload_clicked)
         self.table.addAction(upload_action)
 
@@ -59,6 +71,10 @@ class DatasetsDock(QtWidgets.QDockWidget):
             self.table_model_filter.setFilterFixedString(
                 self.search.displayText())
 
+    def metadata_changed(self, new):
+        for k, v in new.items():
+            self.metadata[k].setText("{}".format(v))
+
     def set_model(self, model):
         self.table_model = model
         self.table_model_filter = QtCore.QSortFilterProxyModel()

artiq/browser/files.py

@@ -118,8 +118,9 @@ class Hdf5FileSystemModel(QtWidgets.QFileSystemModel):
 class FilesDock(QtWidgets.QDockWidget):
     dataset_activated = QtCore.pyqtSignal(str)
     dataset_changed = QtCore.pyqtSignal(str)
+    metadata_changed = QtCore.pyqtSignal(dict)
 
-    def __init__(self, datasets, browse_root="", select=None):
+    def __init__(self, datasets, browse_root="", restore_selection=True):
         QtWidgets.QDockWidget.__init__(self, "Files")
         self.setObjectName("Files")
         self.setFeatures(self.DockWidgetMovable | self.DockWidgetFloatable)
@@ -168,13 +169,7 @@ class FilesDock(QtWidgets.QDockWidget):
         rev_copy.setShortcutContext(QtCore.Qt.WidgetShortcut)
         self.rl.addAction(rev_copy)
 
-        self.restore_selected = select is None
+        self.restore_selection = restore_selection
-        if select is not None:
-            f = os.path.abspath(select)
-            if os.path.isdir(f):
-                self.select_dir(f)
-            else:
-                self.select_file(f)
 
     def _copy_repo_rev(self):
         pass
@@ -190,10 +185,24 @@ class FilesDock(QtWidgets.QDockWidget):
             return
         logger.debug("loading datasets from %s", info.filePath())
         with f:
-            if "datasets" not in f:
+            try:
-                return
+                expid = pyon.decode(f["expid"].value)
-            rd = {k: (True, v.value) for k, v in f["datasets"].items()}
+                start_time = datetime.fromtimestamp(f["start_time"].value)
-            self.datasets.init(rd)
+                v = {
+                    "artiq_version": f["artiq_version"].value,
+                    "repo_rev": expid["repo_rev"],
+                    "file": expid["file"],
+                    "class_name": expid["class_name"],
+                    "rid": f["rid"].value,
+                    "start_time": start_time,
+                }
+                self.metadata_changed.emit(v)
+            except:
+                logger.warning("unable to read metadata from %s",
+                               info.filePath(), exc_info=True)
+            if "datasets" in f:
+                rd = {k: (True, v.value) for k, v in f["datasets"].items()}
+                self.datasets.init(rd)
         self.dataset_changed.emit(info.filePath())
 
     def list_activated(self, idx):
@@ -206,6 +215,13 @@ class FilesDock(QtWidgets.QDockWidget):
         self.rt.expand(idx)
         self.rt.setCurrentIndex(idx)
 
+    def select(self, path):
+        f = os.path.abspath(path)
+        if os.path.isdir(f):
+            self.select_dir(f)
+        else:
+            self.select_file(f)
+
     def select_dir(self, path):
         if not os.path.exists(path):
             return
@@ -247,7 +263,7 @@ class FilesDock(QtWidgets.QDockWidget):
         }
 
     def restore_state(self, state):
-        if self.restore_selected:
+        if self.restore_selection:
             self.select_dir(state["dir"])
             self.select_file(state["file"])
         self.splitter.restoreState(QtCore.QByteArray(state["splitter"]))

artiq/frontend/artiq_browser.py

@@ -45,7 +45,7 @@ def get_argparser():
 
 
 class Browser(QtWidgets.QMainWindow):
-    def __init__(self, smgr, datasets_sub, browse_root, select,
+    def __init__(self, smgr, datasets_sub, browse_root, restore_selection,
                  master_host, master_port):
         QtWidgets.QMainWindow.__init__(self)
         smgr.register(self)
@@ -70,7 +70,8 @@ class Browser(QtWidgets.QMainWindow):
             QtCore.Qt.ScrollBarAsNeeded)
         self.setCentralWidget(self.experiments)
 
-        self.files = files.FilesDock(datasets_sub, browse_root, select=select)
+        self.files = files.FilesDock(datasets_sub, browse_root,
+                                     restore_selection)
         smgr.register(self.files)
 
         self.files.dataset_activated.connect(
@@ -85,6 +86,7 @@ class Browser(QtWidgets.QMainWindow):
         self.datasets = datasets.DatasetsDock(
             datasets_sub, master_host, master_port)
         smgr.register(self.datasets)
+        self.files.metadata_changed.connect(self.datasets.metadata_changed)
 
         self.log = log.LogDock(None, "log")
         smgr.register(self.log)
@@ -145,20 +147,24 @@ def main():
 
     smgr = state.StateManager(args.db_file)
 
-    main_window = Browser(smgr, datasets_sub, args.browse_root,
+    browser = Browser(smgr, datasets_sub, args.browse_root,
-                          args.select, args.server, args.port)
+                      args.select is not None, args.server,
-    widget_log_handler.callback = main_window.log.append_message
+                      args.port)
+    widget_log_handler.callback = browser.log.append_message
+
+    if args.select is not None:
+        browser.files.select(args.select)
 
     if os.name == "nt":
         # HACK: show the main window before creating applets.
         # Otherwise, the windows of those applets that are in detached
         # QDockWidgets fail to be embedded.
-        main_window.show()
+        browser.show()
     smgr.load()
     smgr.start()
     atexit_register_coroutine(smgr.stop)
-    main_window.show()
+    browser.show()
-    loop.run_until_complete(main_window.exit_request.wait())
+    loop.run_until_complete(browser.exit_request.wait())
 
 
 if __name__ == "__main__":