add v1hovermode option

Author: archmoj

src/components/modebar/manage.js

@@ -206,6 +206,14 @@ function getButtonGroups(gd) {
                     enableHover('hoverClosest3d');
                     enableHover('hoverClosestGl2d');
                     enableHover('hoverClosestPie');
+                } else if(b === 'v1hovermode') {
+                    enableHover('toggleHover');
+                    enableHover('hoverClosestCartesian');
+                    enableHover('hoverCompareCartesian');
+                    enableHover('hoverClosestGeo');
+                    enableHover('hoverClosest3d');
+                    enableHover('hoverClosestGl2d');
+                    enableHover('hoverClosestPie');
                 }
             } else newList.push(b);
         }

test/jasmine/tests/modebar_test.js

@@ -1100,8 +1100,7 @@ describe('ModeBar', function() {
                 Plotly.newPlot(gd, mockData, mockLayout, {
                     modeBarButtonsToAdd: [
                         'togglespikelines',
-                        'hovercompare',
-                        'hoverclosest'
+                        'v1hovermode'
                     ]
                 }).then(function() {
                     modeBar = gd._fullLayout._modeBar;