Adding Dashboard toggle fullscreen button

superset-frontend/spec/javascripts/dashboard/components/HeaderActionsDropdown_spec.jsx

@@ -66,9 +66,9 @@ describe('HeaderActionsDropdown', () => {
       expect(wrapper.find(SaveModal)).not.toExist();
     });
 
-    it('should render two MenuItems', () => {
+    it('should render four MenuItems', () => {
       const wrapper = setup(overrideProps);
-      expect(wrapper.find(MenuItem)).toHaveLength(3);
+      expect(wrapper.find(MenuItem)).toHaveLength(4);
     });
 
     it('should render the RefreshIntervalModal', () => {
@@ -100,9 +100,9 @@ describe('HeaderActionsDropdown', () => {
       expect(wrapper.find(SaveModal)).toExist();
     });
 
-    it('should render three MenuItems', () => {
+    it('should render four MenuItems', () => {
       const wrapper = setup(overrideProps);
-      expect(wrapper.find(MenuItem)).toHaveLength(3);
+      expect(wrapper.find(MenuItem)).toHaveLength(4);
     });
 
     it('should render the RefreshIntervalModal', () => {

superset-frontend/spec/javascripts/dashboard/util/getDashboardUrl_spec.js

@@ -31,5 +31,15 @@ describe('getChartIdsFromLayout', () => {
     expect(url).toBe(
       'path?preselect_filters=%7B%2235%22%3A%7B%22key%22%3A%5B%22value%22%5D%7D%7D',
     );
+
+    const urlWithHash = getDashboardUrl('path', filters, 'iamhashtag');
+    expect(urlWithHash).toBe(
+      'path?preselect_filters=%7B%2235%22%3A%7B%22key%22%3A%5B%22value%22%5D%7D%7D#iamhashtag',
+    );
+
+    const urlWithStandalone = getDashboardUrl('path', filters, '', true);
+    expect(urlWithStandalone).toBe(
+      'path?preselect_filters=%7B%2235%22%3A%7B%22key%22%3A%5B%22value%22%5D%7D%7D&standalone=true',
+    );
   });
 });

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

@@ -226,6 +226,25 @@ class HeaderActionsDropdown extends React.PureComponent {
             {t('Download as image')}
           </MenuItem>
         )}
+
+        {!editMode && (
+          <MenuItem
+            onClick={() => {
+              const hasStandalone = window.location.search.includes(
+                'standalone=true',
+              );
+              const url = getDashboardUrl(
+                window.location.pathname,
+                getActiveFilters(),
+                window.location.hash,
+                !hasStandalone,
+              );
+              window.location.replace(url);
+            }}
+          >
+            {t('Toggle FullScreen')}
+          </MenuItem>
+        )}
       </DropdownButton>
     );
   }

superset-frontend/src/dashboard/util/getDashboardUrl.js

@@ -18,11 +18,17 @@
  */
 import serializeActiveFilterValues from './serializeActiveFilterValues';
 
-export default function getDashboardUrl(pathname, filters = {}, hash = '') {
+export default function getDashboardUrl(
+  pathname,
+  filters = {},
+  hash = '',
+  standalone = false,
+) {
   // convert flattened { [id_column]: values } object
   // to nested filter object
   const obj = serializeActiveFilterValues(filters);
   const preselectFilters = encodeURIComponent(JSON.stringify(obj));
   const hashSection = hash ? `#${hash}` : '';
-  return `${pathname}?preselect_filters=${preselectFilters}${hashSection}`;
+  const standaloneParam = standalone ? '&standalone=true' : '';
+  return `${pathname}?preselect_filters=${preselectFilters}${standaloneParam}${hashSection}`;
 }