Bug 1582719 - Hide the Waterfall column when left side bar opens. r=Honza

Differential Revision: https://phabricator.services.mozilla.com/D48529

--HG--
extra : moz-landing-system : lando

devtools/client/netmonitor/src/components/RequestListItem.js

@@ -10,7 +10,6 @@ const {
 } = require("devtools/client/shared/vendor/react");
 const dom = require("devtools/client/shared/vendor/react-dom-factories");
 const PropTypes = require("devtools/client/shared/vendor/react-prop-types");
-const { getVisibleColumns } = require("../selectors/index");
 const {
   fetchNetworkUpdatePacket,
   propertiesEqual,
@@ -280,7 +279,6 @@ class RequestListItem extends Component {
       isSelected,
       firstRequestStartedMs,
       fromCache,
-      networkDetailsOpen,
       onDoubleClick,
       onContextMenu,
       onMouseDown,
@@ -327,12 +325,8 @@ class RequestListItem extends Component {
           header,
         })
       ),
-      // Display the column if waterfall is enabled and the side panel is closed, or if waterfall is
-      // enabled, the side panel is opened and only 1 cloumn is displayed.
-      ((columns.waterfall && !networkDetailsOpen) ||
-        (networkDetailsOpen &&
-          columns.waterfall &&
-          getVisibleColumns(columns).length === 1)) &&
+      // The last column is Waterfall (aka Timeline)
+      columns.waterfall &&
         RequestListColumnWaterfall({
           connector,
           firstRequestStartedMs,

devtools/client/netmonitor/src/selectors/ui.js

@@ -43,12 +43,13 @@ function getVisibleColumns(columns) {
 
 const getColumns = createSelector(
   state => state.ui,
-  ui => {
+  state => state.search,
+  (ui, search) => {
     if (
-      (ui.networkDetailsOpen &&
+      ((ui.networkDetailsOpen || search.panelOpen) &&
         getVisibleColumns(ui.columns).length === 1 &&
         ui.columns.waterfall) ||
-      !ui.networkDetailsOpen
+      (!ui.networkDetailsOpen && !search.panelOpen)
     ) {
       return ui.columns;
     }