Merge pull request #7570 from aws-lumberyard-dev/Atom/guthadam/atom_tools_document_and_window_buses_support_multiple_instances

Atom Tools: updated document and windows systems and buses to support multiple instances

AutomatedTesting/Gem/PythonTests/Atom/atom_utils/material_editor_utils.py

@@ -162,11 +162,11 @@ def select_model_config(configname):
     azlmbr.materialeditor.MaterialViewportRequestBus(azlmbr.bus.Broadcast, "SelectModelPresetByName", configname)
 
 
-def destroy_main_window():
+def exit():
     """
-    Closes the Material Editor window
+    Closes the Material Editor
     """
-    azlmbr.atomtools.AtomToolsMainWindowFactoryRequestBus(azlmbr.bus.Broadcast, "DestroyMainWindow")
+    azlmbr.atomtools.general.exit()
 
 
 def wait_for_condition(function, timeout_in_seconds=1.0):

AutomatedTesting/Gem/PythonTests/Atom/tests/hydra_AtomMaterialEditor_BasicTests.py

@@ -214,7 +214,7 @@ def run():
                                        (not material_editor.is_open(document1_id)) and
                                        (not material_editor.is_open(document2_id)) and
                                        (not material_editor.is_open(document3_id)), 2.0)
-    material_editor.destroy_main_window()
+    material_editor.exit()
 
 
 if __name__ == "__main__":