Revert "* Set single timeout for syncing symbols and folding"

This reverts commit ab9bd39.

spyder/plugins/editor/widgets/codeeditor.py

@@ -134,8 +134,14 @@ class CodeEditor(TextEditBaseWidget):
     UPDATE_DECORATIONS_TIMEOUT = 500  # milliseconds
 
     # Timeouts (in milliseconds) to sychronize symbols and folding after
-    # linting results arrive
-    SYNC_SYMBOLS_AND_FOLDING_TIMEOUT = 500  # milliseconds
+    # linting results arrive, according to the number of lines in the file.
+    SYNC_SYMBOLS_AND_FOLDING_TIMEOUTS = {
+        # Lines: Timeout
+        500: 350,
+        1500: 800,
+        2500: 1200,
+        6500: 1800
+    }
 
     # Custom signal to be emitted upon completion of the editor's paintEvent
     painted = Signal(QPaintEvent)
@@ -304,10 +310,10 @@ def __init__(self, parent=None):
         # See: process_diagnostics
         self._timer_sync_symbols_and_folding = QTimer(self)
         self._timer_sync_symbols_and_folding.setSingleShot(True)
-        self._timer_sync_symbols_and_folding.setInterval(
-            self.SYNC_SYMBOLS_AND_FOLDING_TIMEOUT)
         self._timer_sync_symbols_and_folding.timeout.connect(
             self.sync_symbols_and_folding)
+        self.blockCountChanged.connect(
+            self.set_sync_symbols_and_folding_timeout)
 
         # Goto uri
         self._last_hover_pattern_key = None
@@ -1176,6 +1182,25 @@ def process_diagnostics(self, params):
         # Process results (runs in a thread)
         self.process_code_analysis(params['params'])
 
+    def set_sync_symbols_and_folding_timeout(self):
+        """
+        Set timeout to sync symbols and folding according to the file
+        size.
+        """
+        current_lines = self.get_line_count()
+        timeout = None
+
+        for lines in self.SYNC_SYMBOLS_AND_FOLDING_TIMEOUTS.keys():
+            if (current_lines // lines) == 0:
+                timeout = self.SYNC_SYMBOLS_AND_FOLDING_TIMEOUTS[lines]
+                break
+
+        if not timeout:
+            timeouts = self.SYNC_SYMBOLS_AND_FOLDING_TIMEOUTS.values()
+            timeout = list(timeouts)[-1]
+
+        self._timer_sync_symbols_and_folding.setInterval(timeout)
+
     def sync_symbols_and_folding(self):
         """
         Synchronize symbols and folding after linting results arrive.
@@ -2855,7 +2880,7 @@ def paste(self):
             if indentations:
                 max_dedent = min(indentations)
                 lines_adjustment = max(lines_adjustment, -max_dedent)
-
+    
             # Get new text
             remaining_lines = [
                 self.adjust_indentation(line, lines_adjustment)

spyder/plugins/editor/widgets/editor.py

@@ -2632,6 +2632,7 @@ def load(self, filename, set_current=True, add_where='end',
             self.set_os_eol_chars(index)
         self.is_analysis_done = False
         self.analyze_script(index)
+        finfo.editor.set_sync_symbols_and_folding_timeout()
         return finfo
 
     def set_os_eol_chars(self, index=None, osname=None):