Create only one instance of IntrospectionManager for the application

spyderlib/plugins/editor.py

@@ -37,6 +37,7 @@
 from spyderlib.py3compat import getcwd, PY2, qbytearray_to_str, to_text_string
 from spyderlib.utils import codeanalysis, encoding, programs, sourcecode
 from spyderlib.utils import icon_manager as ima
+from spyderlib.utils.introspection.manager import IntrospectionManager
 from spyderlib.utils.qthelpers import (add_actions, add_shortcut_to_tooltip,
                                        create_action, get_filetype_icon)
 from spyderlib.widgets.findreplace import FindReplace
@@ -387,7 +388,7 @@ def __init__(self, parent, ignore_last_opened_files=False):
         self.editorstacks = None
         self.editorwindows = None
         self.editorwindows_to_be_created = None
-        
+
         self.file_dependent_actions = []
         self.pythonfile_dependent_actions = []
         self.dock_toolbar_actions = None
@@ -424,7 +425,9 @@ def __init__(self, parent, ignore_last_opened_files=False):
         self.editorwindows_to_be_created = []
         self.toolbar_list = None
         self.menu_list = None
-
+
+        self.introspector = IntrospectionManager()
+
         # Setup new windows:
         self.main.all_actions_defined.connect(self.setup_other_windows)
 
@@ -1093,8 +1096,7 @@ def save_focus_editorstack(self):
             for win in [self]+self.editorwindows:
                 if win.isAncestorOf(editorstack):
                     self.set_last_focus_editorstack(win, editorstack)
-
-
+
     #------ Handling editorstacks
     def register_editorstack(self, editorstack):
         self.editorstacks.append(editorstack)
@@ -1122,6 +1124,8 @@ def register_editorstack(self, editorstack):
         editorstack.set_io_actions(self.new_action, self.open_action,
                                    self.save_action, self.revert_action)
         editorstack.set_tempfile_path(self.TEMPFILE_PATH)
+        editorstack.set_introspector(self.introspector)
+
         settings = (
             ('set_pyflakes_enabled',                'code_analysis/pyflakes'),
             ('set_pep8_enabled',                    'code_analysis/pep8'),
@@ -1174,6 +1178,7 @@ def register_editorstack(self, editorstack):
         editorstack.update_plugin_title.connect(
                                        lambda: self.update_plugin_title.emit())
         editorstack.editor_focus_changed.connect(self.save_focus_editorstack)
+        editorstack.editor_focus_changed.connect(self.set_editorstack_for_introspection)
         editorstack.editor_focus_changed.connect(self.main.plugin_focus_changed)
         editorstack.zoom_in.connect(lambda: self.zoom(1))
         editorstack.zoom_out.connect(lambda: self.zoom(-1))
@@ -1243,8 +1248,29 @@ def file_renamed_in_data_in_editorstack(self, editorstack_id_str,
             if str(id(editorstack)) != editorstack_id_str:
                 editorstack.rename_in_data(index, filename)
 
+    def set_editorstack_for_introspection(self):
+        """
+        Set the current editorstack to be used by the IntrospectionManager
+        instance
+        """
+        editorstack = self.__get_focus_editorstack()
+        if editorstack is not None:
+            self.introspector.set_editor_widget(editorstack)
+
+            # Disconnect active signals
+            try:
+                self.introspector.send_to_help.disconnect()
+                self.introspector.edit_goto.disconnect()
+            except TypeError:
+                pass
+
+            # Reconnect signals again
+            self.introspector.send_to_help.connect(editorstack.send_to_help)
+            self.introspector.edit_goto.connect(
+                lambda fname, lineno, name:
+                editorstack.edit_goto.emit(fname, lineno, name))
 
-    #------ Handling editor windows    
+    #------ Handling editor windows
     def setup_other_windows(self):
         """Setup toolbars and menus for 'New window' instances"""
         self.toolbar_list = (

spyderlib/utils/introspection/manager.py

@@ -160,9 +160,9 @@ class IntrospectionManager(QObject):
     send_to_help = Signal(str, str, str, str, bool)
     edit_goto = Signal(str, int, str)
 
-    def __init__(self, editor_widget, executable=None):
+    def __init__(self, executable=None):
         super(IntrospectionManager, self).__init__()
-        self.editor_widget = editor_widget
+        self.editor_widget = None
         self.pending = None
         self.plugin_manager = PluginManager(executable)
         self.plugin_manager.introspection_complete.connect(
@@ -174,6 +174,9 @@ def change_executable(self, executable):
         self.plugin_manager.introspection_complete.connect(
             self._introspection_complete)
 
+    def set_editor_widget(self, editor_widget):
+        self.editor_widget = editor_widget
+
     def _get_code_info(self, name, position=None, **kwargs):
 
         editor = self.editor_widget.get_current_editor()

spyderlib/widgets/editor.py

@@ -35,7 +35,6 @@
 from spyderlib.utils import icon_manager as ima
 from spyderlib.utils import (codeanalysis, encoding, sourcecode,
                              syntaxhighlighters)
-from spyderlib.utils.introspection.manager import IntrospectionManager
 from spyderlib.utils.qthelpers import (add_actions, create_action,
                                        create_toolbutton, get_filetype_icon,
                                        mimedata2url)
@@ -402,13 +401,7 @@ def __init__(self, parent, actions):
         if ccs not in syntaxhighlighters.COLOR_SCHEME_NAMES:
             ccs = syntaxhighlighters.COLOR_SCHEME_NAMES[0]
         self.color_scheme = ccs
-        self.introspector = IntrospectionManager(self)
-
-        self.introspector.send_to_help.connect(self.send_to_help)
-        self.introspector.edit_goto.connect(
-             lambda fname, lineno, name:
-             self.edit_goto.emit(fname, lineno, name))
-
+        self.introspector = None
         self.__file_status_flag = False
 
         # Real-time code analysis
@@ -862,6 +855,9 @@ def set_always_remove_trailing_spaces(self, state):
     def set_focus_to_editor(self, state):
         self.focus_to_editor = state
 
+    def set_introspector(self, introspector):
+        self.introspector = introspector
+
     #------ Stacked widget management
     def get_stack_index(self):
         return self.tabs.currentIndex()
@@ -2192,13 +2188,14 @@ def __init__(self):
         self.outlineexplorer = OutlineExplorerWidget(self, show_fullpath=False,
                                                      show_all_files=False)
         self.outlineexplorer.edit_goto.connect(self.go_to_file)
+        self.editor_splitter = EditorSplitter(self, self, menu_actions,
+                                              first=True)
 
         editor_widgets = QWidget(self)
         editor_layout = QVBoxLayout()
         editor_layout.setContentsMargins(0, 0, 0, 0)
         editor_widgets.setLayout(editor_layout)
-        editor_layout.addWidget(EditorSplitter(self, self, menu_actions,
-                                               first=True))
+        editor_layout.addWidget(self.editor_splitter)
         editor_layout.addWidget(self.find_widget)
 
         self.setContentsMargins(0, 0, 0, 0)
@@ -2331,13 +2328,20 @@ def register_widget_shortcuts(self, context, widget):
 def test():
     from spyderlib.utils.qthelpers import qapplication
     from spyderlib.config.base import get_module_path
+    from spyderlib.utils.introspection.manager import IntrospectionManager
 
     cur_dir = osp.join(get_module_path('spyderlib'), 'widgets')
     app = qapplication(test_time=8)
+    introspector = IntrospectionManager()
+
     test = EditorPluginExample()
     test.resize(900, 700)
     test.show()
 
+    editorstack = test.editor_splitter.editorstack
+    editorstack.set_introspector(introspector)
+    introspector.set_editor_widget(editorstack)
+
     import time
     t0 = time.time()
     test.load(osp.join(cur_dir, "editor.py"))