Miscellaneous improvements

- Fix and improve variable value parsing for numbers.
- do not show variable info overlay on text node input field.
- Fix code formatting.

Author: BirjuVachhani

lib/src/api/models/variables_model.dart

@@ -61,6 +61,9 @@ class VariableData
   /// explicitly provided by the user.
   final String value;
 
+  /// Whether the variable has a value or not.
+  bool get hasValue => value.isNotEmpty;
+
   @JsonKey(unknownEnumValue: VariableType.text)
 
   /// Type of the variable. This is used to determine how to parse the value.
@@ -113,10 +116,17 @@ class VariableData
         type: type,
       );
 
-  /// Converts [value] to given type [T]. This will fail if type conversion
-  /// fails.
-  R? typedValue<R extends Object>({R? defaultValue}) =>
-      value.typedValue<R>(defaultValue: defaultValue);
+  /// Returns the value converted to the appropriate type according to [type].
+  Object? getValue() {
+    return switch (type) {
+      VariableType.text => value,
+      VariableType.integer => num.tryParse(value).toInt(),
+      VariableType.decimal => num.tryParse(value).toDouble(),
+      VariableType.boolean => bool.tryParse(value, caseSensitive: false),
+      VariableType.map => tryJsonDecode(value),
+      VariableType.list => value.toList(),
+    };
+  }
 }
 
 /// Contains all the variables associated with a canvas inside a page.

lib/src/api/typed_value.dart

@@ -8,7 +8,7 @@ extension ObjectExt on Object? {
   /// Returns [defaultValue] or null otherwise.
   R? typedValue<R extends Object>({R? defaultValue}) {
     final value = this;
-    if(this == null) return defaultValue;
+    if (this == null) return defaultValue;
     if (value is R) return value;
 
     return switch (R) {
@@ -155,7 +155,7 @@ extension ConversionExt on Object? {
     if (value is double) return value != 0;
     if (value is num) return value != 0;
     if (value is String) {
-      final parsedBool = bool.tryParse(value.toLowerCase());
+      final parsedBool = bool.tryParse(value, caseSensitive: false);
       if (parsedBool != null) return parsedBool;
       final parsedNum = num.tryParse(value);
       if (parsedNum != null) return parsedNum != 0;