added isEditMode (#15594)

(cherry picked from commit ad85e7be52)

superset-frontend/src/dashboard/components/Header/HeaderActionsDropdown/index.jsx

@@ -159,6 +159,8 @@ class HeaderActionsDropdown extends React.PureComponent {
         downloadAsImage(
           SCREENSHOT_NODE_SELECTOR,
           this.props.dashboardTitle,
+          {},
+          true,
         )(domEvent).then(() => {
           menu.style.visibility = 'visible';
         });

superset-frontend/src/views/CRUD/data/database/DatabaseModal/index.tsx

@@ -881,7 +881,7 @@ const DatabaseModal: FunctionComponent<DatabaseModalProps> = ({
                 testConnection={testConnection}
                 isEditMode={isEditMode}
               />
-              {isDynamic(db?.backend || db?.engine) && (
+              {isDynamic(db?.backend || db?.engine) && !isEditMode && (
                 <div css={(theme: SupersetTheme) => infoTooltip(theme)}>
                   <Button
                     buttonStyle="link"
@@ -904,7 +904,7 @@ const DatabaseModal: FunctionComponent<DatabaseModalProps> = ({
                     tooltip={t(
                       'Click this link to switch to an alternate form that exposes only the required fields needed to connect this database.',
                     )}
-                    viewBox="0 -3 24 24"
+                    viewBox="0 0 24 24"
                   />
                 </div>
               )}

superset-frontend/src/views/CRUD/data/database/DatabaseModal/styles.ts

@@ -124,7 +124,6 @@ export const antDModalNoPaddingStyles = css`
 export const infoTooltip = (theme: SupersetTheme) => css`
   margin-bottom: ${theme.gridUnit * 5}px;
   svg {
-    vertical-align: bottom;
     margin-bottom: ${theme.gridUnit * 0.25}px;
   }
 `;

superset/databases/api.py

@@ -919,6 +919,9 @@ class DatabaseRestApi(BaseSupersetModelRestApi):
         preferred_databases: List[str] = app.config.get("PREFERRED_DATABASES", [])
         available_databases = []
         for engine_spec, drivers in get_available_engine_specs().items():
+            if not drivers:
+                continue
+
             payload: Dict[str, Any] = {
                 "name": engine_spec.engine_name,
                 "engine": engine_spec.engine,