Finance traces hoverinfo arrayOk

src/traces/ohlc/hover.js

@@ -101,7 +101,9 @@ function hoverSplit(pointData, xval, yval, hovermode) {
     // skip the rest (for this trace) if we didn't find a close point
     if(!closestPoint) return [];
 
-    var hoverinfo = trace.hoverinfo;
+    var cdIndex = closestPoint.index;
+    var di = cd[cdIndex];
+    var hoverinfo = di.hi || trace.hoverinfo;
     var hoverParts = hoverinfo.split('+');
     var isAll = hoverinfo === 'all';
     var hasY = isAll || hoverParts.indexOf('y') !== -1;
@@ -166,7 +168,7 @@ function hoverOnPoints(pointData, xval, yval, hovermode) {
         return t.labels[attr] + Axes.hoverLabelText(ya, trace[attr][i]);
     }
 
-    var hoverinfo = trace.hoverinfo;
+    var hoverinfo = di.hi || trace.hoverinfo;
     var hoverParts = hoverinfo.split('+');
     var isAll = hoverinfo === 'all';
     var hasY = isAll || hoverParts.indexOf('y') !== -1;

src/traces/parcats/attributes.js

@@ -41,7 +41,8 @@ module.exports = {
     domain: domainAttrs({name: 'parcats', trace: true, editType: 'calc'}),
     hoverinfo: extendFlat({}, plotAttrs.hoverinfo, {
         flags: ['count', 'probability'],
-        editType: 'plot'
+        editType: 'plot',
+        arrayOk: false
         // plotAttrs.hoverinfo description is appropriate
     }),
     hoveron: {

test/jasmine/tests/finance_test.js

@@ -1046,5 +1046,112 @@ describe('finance charts *special* handlers:', function() {
         .catch(failTest)
         .then(done);
     });
+});
+
+describe('finance trace hover:', function() {
+    var gd;
+
+    afterEach(destroyGraphDiv);
+
+    function run(specs) {
+        gd = createGraphDiv();
+
+        var data = specs.traces.map(function(t) {
+            return Lib.extendFlat({
+                type: specs.type,
+                open: [1, 2],
+                close: [2, 3],
+                high: [3, 4],
+                low: [0, 5]
+            }, t);
+        });
+
+        var layout = Lib.extendFlat({
+            showlegend: false,
+            width: 400,
+            height: 400,
+            margin: {t: 0, b: 0, l: 0, r: 0, pad: 0}
+        }, specs.layout || {});
+
+        var xval = 'xval' in specs ? specs.xvals : 0;
+        var yval = 'yval' in specs ? specs.yvals : 1;
+        var hovermode = layout.hovermode || 'x';
+
+        return Plotly.plot(gd, data, layout).then(function() {
+            var results = gd.calcdata.map(function(cd) {
+                var trace = cd[0].trace;
+                var pointData = {
+                    index: false,
+                    distance: 20,
+                    cd: cd,
+                    trace: trace,
+                    xa: gd._fullLayout.xaxis,
+                    ya: gd._fullLayout.yaxis,
+                    maxHoverDistance: 20
+                };
+                var pts = trace._module.hoverPoints(pointData, xval, yval, hovermode);
+                return pts ? pts[0] : {distance: Infinity};
+            });
+
+            var actual = results[0];
+            var exp = specs.exp;
+
+
+            for(var k in exp) {
+                var msg = '- key ' + k;
+                expect(actual[k]).toBe(exp[k], msg);
+            }
+        });
+    }
 
+    ['ohlc', 'candlestick'].forEach(function(type) {
+        [{
+            type: type,
+            desc: 'basic',
+            traces: [{}],
+            exp: {
+                extraText: 'open: 1<br>high: 3<br>low: 0<br>close: 2  ▲'
+            }
+        }, {
+            type: type,
+            desc: 'with scalar text',
+            traces: [{text: 'SCALAR'}],
+            exp: {
+                extraText: 'open: 1<br>high: 3<br>low: 0<br>close: 2  ▲<br>SCALAR'
+            }
+        }, {
+            type: type,
+            desc: 'with array text',
+            traces: [{text: ['A', 'B']}],
+            exp: {
+                extraText: 'open: 1<br>high: 3<br>low: 0<br>close: 2  ▲<br>A'
+            }
+        }, {
+            type: type,
+            desc: 'just scalar text',
+            traces: [{hoverinfo: 'text', text: 'SCALAR'}],
+            exp: {
+                extraText: 'SCALAR'
+            }
+        }, {
+            type: type,
+            desc: 'just array text',
+            traces: [{hoverinfo: 'text', text: ['A', 'B']}],
+            exp: {
+                extraText: 'A'
+            }
+        }, {
+            type: type,
+            desc: 'just array text with array hoverinfo',
+            traces: [{hoverinfo: ['text', 'text'], text: ['A', 'B']}],
+            exp: {
+                extraText: 'A'
+            }
+        }]
+        .forEach(function(specs) {
+            it('should generate correct hover labels ' + type + ' - ' + specs.desc, function(done) {
+                run(specs).catch(failTest).then(done);
+            });
+        });
+    });
 });