Enhance ConfigEditor to handle error condition

This patch enhanced ConfigEditor to handle the case that the app
will crash when "Value" is not provided in YAML. It also fixed
an hide/show issue for Table type widget.

Signed-off-by: Maurice Ma <maurice.ma@intel.com>

BootloaderCorePkg/Tools/ConfigEditor.py

@@ -509,7 +509,8 @@ class application(tkinter.Frame):
             result = self.evaluate_condition(item)
             if result == 2:
                 # Gray
-                widget.configure(state='disabled')
+                if not isinstance(widget, custom_table):
+                    widget.configure(state='disabled')
             elif result == 0:
                 # Hide
                 visible = False
@@ -517,7 +518,9 @@ class application(tkinter.Frame):
             else:
                 # Show
                 widget.grid()
-                widget.configure(state='normal')
+                if not isinstance(widget, custom_table):
+                    widget.configure(state='normal')
+
 
         return visible
 

BootloaderCorePkg/Tools/GenCfgData.py

@@ -769,6 +769,8 @@ class CGenCfgData:
 
     def get_value (self, value_str, bit_length, array = True):
         value_str = value_str.strip()
+        if len(value_str) == 0:
+            return 0
         if value_str[0] == "'" and value_str[-1] == "'" or \
            value_str[0] == '"' and value_str[-1] == '"':
             value_str = value_str[1:-1]