added blink indicator to GoTo and FindUsages commands

.gitignore

@@ -40,3 +40,4 @@ nosetests.xml
 
 # Don't track Main.sublime-menu anymore
 Main.sublime-menu
+*.pickle

anaconda.py

@@ -412,6 +412,8 @@ def _jump(self, filename, lineno=None, columno=None):
             sublime.ENCODED_POSITION
         )
 
+        self._toggle_indicator(lineno, columno)
+
     def _show_options(self, defs, usages):
         """Show a dropdown quickpanel with options to jump
         """
@@ -426,6 +428,28 @@ def _show_options(self, defs, usages):
         self.options = defs
         self.text.view.window().show_quick_panel(options, self._jump)
 
+    def _toggle_indicator(self, lineno=0, columno=0):
+        """Toggle mark indicator for focus the cursor
+        """
+
+        pt = self.text.view.text_point(lineno - 1, columno)
+        region_name = 'anaconda.indicator.{}.{}'.format(
+            self.text.view.id(), lineno
+        )
+        show = lambda: self.text.view.add_regions(
+            region_name,
+            [sublime.Region(pt, pt)],
+            'comment',
+            'bookmark',
+            sublime.DRAW_EMPTY_AS_OVERWRITE
+        )
+        hide = lambda: self.text.view.erase_regions(region_name)
+
+        for i in range(3):
+            delta = 300 * i * 2
+            sublime.set_timeout(show, delta)
+            sublime.set_timeout(hide, delta + 300)
+
 
 def plugin_loaded():
     """Called directly from sublime on plugin load