chore: Localization of superset pt. 2 (#22772)

superset-frontend/src/components/Datasource/ChangeDatasourceModal.tsx

@@ -190,7 +190,7 @@ const ChangeDatasourceModal: FunctionComponent<ChangeDatasourceModalProps> = ({
         );
       });
     onHide();
-    addSuccessToast('Successfully changed dataset!');
+    addSuccessToast(t('Successfully changed dataset!'));
   };
 
   const handlerCancelConfirm = () => {

superset-frontend/src/components/Datasource/DatasourceEditor.jsx

@@ -491,7 +491,7 @@ ColumnCollectionTable.defaultProps = {
   allowAddItem: false,
   allowEditDataType: false,
   itemGenerator: () => ({
-    column_name: '<new column>',
+    column_name: t('<new column>'),
     filterable: true,
     groupby: true,
   }),
@@ -976,8 +976,8 @@ class DatasourceEditor extends React.PureComponent {
           tableColumns={['name', 'config']}
           onChange={this.onDatasourcePropChange.bind(this, 'spatials')}
           itemGenerator={() => ({
-            name: '<new spatial>',
-            type: '<no type>',
+            name: t('<new spatial>'),
+            type: t('<no type>'),
             config: null,
           })}
           collection={spatials}
@@ -1256,7 +1256,7 @@ class DatasourceEditor extends React.PureComponent {
         allowAddItem
         onChange={this.onDatasourcePropChange.bind(this, 'metrics')}
         itemGenerator={() => ({
-          metric_name: '<new metric>',
+          metric_name: t('<new metric>'),
           verbose_name: '',
           expression: '',
         })}
@@ -1418,10 +1418,10 @@ class DatasourceEditor extends React.PureComponent {
                 allowAddItem
                 allowEditDataType
                 itemGenerator={() => ({
-                  column_name: '<new column>',
+                  column_name: t('<new column>'),
                   filterable: true,
                   groupby: true,
-                  expression: '<enter SQL expression here>',
+                  expression: t('<enter SQL expression here>'),
                   __expanded: true,
                 })}
               />

superset-frontend/src/components/Datasource/DatasourceModal.tsx

@@ -177,6 +177,8 @@ const DatasourceModal: FunctionComponent<DatasourceModalProps> = ({
       content: renderSaveDialog(),
       onOk: onConfirmSave,
       icon: null,
+      okText: t('OK'),
+      cancelText: t('Cancel'),
     });
   };