fix: rename dragEventEnter to dragEnterEvent in CapaExplorerRulegenEditor

Qt dispatches drag-enter events to dragEnterEvent; the misspelled method
dragEventEnter was dead code and its super() call would raise AttributeError
if ever reached.

CHANGELOG.md

@@ -48,8 +48,7 @@
 - fix: remove unreachable backports.functools_lru_cache fallback and dead dependency @williballenthin
 - fix: Scopes.from_dict uses cls instead of self so subclasses return the correct type @williballenthin
 - fix: correct wrong dict key in VMRay _compute_monitor_threads assertion (used thread_id instead of process_id) @williballenthin
-fix: replace assert with isinstance guard in get_callee for invalid MethodSpec tokens @williballenthin
-- fix: replace assert with isinstance guard in get_callee for invalid MethodSpec tokens @williballenthin
+- fix: rename dragEventEnter to dragEnterEvent so Qt dispatches drag-enter events correctly in CapaExplorerRulegenEditor @williballenthin (SURF-64)
 - fix: guard against None in lessThan else-branch so sorting columns with empty cells does not raise AttributeError @williballenthin (SURF-63)
 - fix: add explicit import capa.loader in form.py to avoid fragile transitive import dependency @williballenthin (SURF-62)
 - fix: initialize f=None before try block in load_capa_function_results to prevent UnboundLocalError in except handler @williballenthin (SURF-61)

capa/ida/plugin/view.py

@@ -237,7 +237,7 @@ class CapaExplorerRulegenPreview(QtWidgets.QTextEdit):
                 # determine lineno for first selected line, and column
                 cur.setPosition(select_start_ppos)
                 start_lineno = self.count_previous_lines_from_block(cur.block())
-                start_lineco = cur.columnNumber()
+                start_colno = cur.columnNumber()
 
                 # determine lineno for last selected line
                 cur.setPosition(select_end_ppos)
@@ -282,7 +282,7 @@ class CapaExplorerRulegenPreview(QtWidgets.QTextEdit):
                     select_end_ppos += (lines_modified * len(self.INDENT)) + len(self.INDENT)
                 elif lines_modified:
                     # user SHIFT + Tab, decrease selection positions
-                    if start_lineco not in (0, 1) and first_modified:
+                    if start_colno not in (0, 1) and first_modified:
                         # only decrease start position if not in first column
                         select_start_ppos -= len(self.INDENT)
                     select_end_ppos -= lines_modified * len(self.INDENT)
@@ -378,14 +378,6 @@ class CapaExplorerRulegenEditor(QtWidgets.QTreeWidget):
         """ """
         return 2
 
-    def dragMoveEvent(self, e):
-        """ """
-        super().dragMoveEvent(e)
-
-    def dragEventEnter(self, e):
-        """ """
-        super().dragEventEnter(e)
-
     def dropEvent(self, e):
         """ """
         if not self.indexAt(e.pos()).isValid():