- trying to improve the performance of View CNC Code command by using QPlainTextEdit; made the mods for it

- when using the Find function in the TextEditor and the result reach the bottom of the document, the next find will be the first in the document (before it defaulted to the beginning of the document)

flatcamEditors/FlatCAMTextEditor.py

@@ -19,7 +19,7 @@ if '_' not in builtins.__dict__:
 
 class TextEditor(QtWidgets.QWidget):
 
-    def __init__(self, app, text=None):
+    def __init__(self, app, text=None, plain_text=None):
         super().__init__()
 
         self.app = app
@@ -39,12 +39,20 @@ class TextEditor(QtWidgets.QWidget):
         self.work_editor_layout.setContentsMargins(2, 2, 2, 2)
         self.t_frame.setLayout(self.work_editor_layout)
 
-        self.code_editor = FCTextAreaExtended()
-        stylesheet = """
-                        QTextEdit { selection-background-color:yellow;
-                                    selection-color:black;
-                        }
-                     """
+        if plain_text:
+            self.code_editor = FCPlainTextAreaExtended()
+            stylesheet = """
+                            QPlainTextEdit { selection-background-color:yellow;
+                                             selection-color:black;
+                            }
+                         """
+        else:
+            self.code_editor = FCTextAreaExtended()
+            stylesheet = """
+                            QTextEdit { selection-background-color:yellow;
+                                        selection-color:black;
+                            }
+                         """
 
         self.code_editor.setStyleSheet(stylesheet)
 
@@ -233,6 +241,7 @@ class TextEditor(QtWidgets.QWidget):
         r = self.code_editor.find(str(text_to_be_found), flags)
         if r is False:
             self.code_editor.moveCursor(QtGui.QTextCursor.Start)
+            r = self.code_editor.find(str(text_to_be_found), flags)
 
     def handleReplaceGCode(self):
         self.app.report_usage("handleReplaceGCode()")