Multiple Live Viewers can be opened simultaneously

docs/release_notes/next/feature-2361-multiple-live-viewers

@@ -0,0 +1 @@
+#2361: Multiple Live Viewers can now be opened and pointed to different directories simultaneously

mantidimaging/gui/windows/live_viewer/presenter.py

@@ -46,7 +46,8 @@ def __init__(self, view: LiveViewerWindowView, main_window: MainWindowView):
 
     def close(self) -> None:
         """Close the window."""
-        self.model.close()
+        if self.model is not None:
+            self.model.close()
         self.model = None  # type: ignore # Presenter instance to be destroyed -type can be inconsistent
         self.view = None  # type: ignore # Presenter instance to be destroyed -type can be inconsistent
 

mantidimaging/gui/windows/live_viewer/view.py

@@ -28,9 +28,9 @@ class LiveViewerWindowView(BaseMainWindowView):
 
     def __init__(self, main_window: MainWindowView, live_dir_path: Path) -> None:
         super().__init__(None, 'gui/ui/live_viewer_window.ui')
-        self.setWindowTitle("Mantid Imaging - Live Viewer")
         self.main_window = main_window
         self.path = live_dir_path
+        self.setWindowTitle(f"Mantid Imaging - Live Viewer - {str(self.path)}")
         self.presenter = LiveViewerWindowPresenter(self, main_window)
         self.live_viewer = LiveViewWidget()
         self.imageLayout.addWidget(self.live_viewer)
@@ -88,8 +88,11 @@ def set_image_index(self, index: int) -> None:
 
     def closeEvent(self, e) -> None:
         """Close the window and remove it from the main window list"""
-        self.main_window.live_viewer = None
-        self.presenter.close()
+        for live_viewer in self.main_window.live_viewer_list:
+            if live_viewer.path == self.path:
+                if live_viewer.presenter:
+                    live_viewer.presenter.close()
+                live_viewer.close()
         self.live_viewer.handle_deleted()
         super().closeEvent(e)
         self.presenter = None  # type: ignore # View instance to be destroyed -type can be inconsistent

mantidimaging/gui/windows/main/view.py

@@ -101,7 +101,7 @@ class MainWindowView(BaseMainWindowView):
     filters: FiltersWindowView | None = None
     recon: ReconstructWindowView | None = None
     spectrum_viewer: SpectrumViewerWindowView | None = None
-    live_viewer: LiveViewerWindowView | None = None
+    live_viewer_list: list[LiveViewerWindowView] = []
     settings_window: SettingsWindowView | None = None
 
     image_load_dialog: ImageLoadDialog | None = None
@@ -474,13 +474,11 @@ def live_view_choose_directory(self) -> None:
             self.show_live_viewer(Path(live_data_directory))
 
     def show_live_viewer(self, live_data_path: Path) -> None:
-        if not self.live_viewer:
-            self.live_viewer = LiveViewerWindowView(self, live_data_path)
-            self.live_viewer.show()
-        else:
-            self.live_viewer.activateWindow()
-            self.live_viewer.raise_()
-            self.live_viewer.show()
+        live_viewer = LiveViewerWindowView(self, live_data_path)
+        self.live_viewer_list.append(live_viewer)
+        self.live_viewer_list[-1].activateWindow()
+        self.live_viewer_list[-1].raise_()
+        self.live_viewer_list[-1].show()
 
     @property
     def stack_list(self) -> list[StackId]:
@@ -563,8 +561,8 @@ def closeEvent(self, event) -> None:
             # Close additional windows which do not have the MainWindow as parent
             if self.recon:
                 self.recon.close()
-            if self.live_viewer:
-                self.live_viewer.close()
+            if self.live_viewer_list:
+                [live_viewer.close() for live_viewer in self.live_viewer_list]
             if self.spectrum_viewer:
                 self.spectrum_viewer.close()
             if self.filters: