Added Open Impact Category to Calculation Setup screen (#1338)

Author: mrvisscher

activity_browser/actions/__init__.py

@@ -30,6 +30,7 @@
 
 from .method.method_duplicate import MethodDuplicate
 from .method.method_delete import MethodDelete
+from .method.method_open import MethodOpen
 
 from .method.cf_uncertainty_modify import CFUncertaintyModify
 from .method.cf_amount_modify import CFAmountModify

activity_browser/actions/method/method_open.py

@@ -0,0 +1,26 @@
+from typing import List
+
+from PySide2 import QtWidgets, QtCore
+
+from activity_browser import signals
+from activity_browser.actions.base import ABAction, exception_dialogs
+from activity_browser.ui.icons import qicons
+
+
+class MethodOpen(ABAction):
+    """
+    ABAction to open one or more supplied methods in a method tab by employing signals.
+
+    TODO: move away from using signals like this. Probably add a method to the MainWindow to add a panel instead.
+    """
+
+    icon = qicons.right
+    text = "Open Impact Category"
+
+    @staticmethod
+    @exception_dialogs
+    def run(method_names: List[tuple]):
+        QtWidgets.QApplication.setOverrideCursor(QtCore.Qt.WaitCursor)
+        for method_name in method_names:
+            signals.method_selected.emit(method_name)
+        QtWidgets.QApplication.restoreOverrideCursor()

activity_browser/ui/tables/LCA_setup.py

@@ -1,7 +1,7 @@
 from PySide2 import QtWidgets
 from PySide2.QtCore import Qt, Slot
 
-from activity_browser import log, signals
+from activity_browser import log, signals, actions
 from activity_browser.mod.bw2data import calculation_setups
 
 from ..icons import qicons
@@ -174,6 +174,8 @@ def __init__(self, parent=None):
             "Hold CTRL and click to select multiple rows to open or delete them."
         )
 
+        self.open_method_action = actions.MethodOpen.get_QAction(self.selected_methods)
+
     def to_python(self):
         return self.model.methods
 
@@ -195,11 +197,14 @@ def contextMenuEvent(self, event) -> None:
         if self.indexAt(event.pos()).row() == -1:
             return
         menu = QtWidgets.QMenu()
+
+        menu.addAction(self.open_method_action)
         menu.addAction(
             qicons.delete,
-            "Remove row",
+            "Remove rows",
             lambda: self.model.delete_rows(self.selectedIndexes()),
         )
+
         menu.exec_(event.globalPos())
 
     def dragEnterEvent(self, event):
@@ -225,6 +230,9 @@ def dropEvent(self, event):
             ):
                 self.model.relocateRow(from_index, to_index)
 
+    def selected_methods(self):
+        return [self.model.get_method(p) for p in self.selectedIndexes() if p.column() == 0]
+
 
 class ScenarioImportTable(ABDataFrameView):
     """Self-contained widget that shows the scenario headers for a given

activity_browser/ui/tables/models/lca_setup.py

@@ -1,4 +1,4 @@
-from typing import Iterable
+from typing import Iterable, List, Union
 
 import numpy as np
 import pandas as pd
@@ -192,6 +192,13 @@ def methods(self) -> list:
             else self._dataframe.loc[:, "method"].to_list()
         )
 
+    def get_method(self, proxy: Union[QModelIndex, int]) -> tuple:
+        """
+        Return the method coupled to a model index
+        """
+        idx = self.proxy_to_source(proxy)
+        return self._dataframe["method"][idx.row()]
+
     def load(self, cs_name: str = None) -> None:
         """
         Load a calculation setup defined by cs_name into the methods table.