More layout meta support

src/components/fx/hover.js

@@ -738,6 +738,7 @@ function _hover(gd, evt, subplot, noHoverEvent) {
 var EXTRA_STRING_REGEX = /<extra>([\s\S]*)<\/extra>/;
 
 function createHoverText(hoverData, opts, gd) {
+    var fullLayout = gd._fullLayout;
     var hovermode = opts.hovermode;
     var rotateLabels = opts.rotateLabels;
     var bgColor = opts.bgColor;
@@ -925,6 +926,10 @@ function createHoverText(hoverData, opts, gd) {
         if(d.nameOverride !== undefined) d.name = d.nameOverride;
 
         if(d.name) {
+            if(fullLayout.meta) {
+                d.name = Lib.templateString(d.name, {meta: fullLayout.meta});
+            }
+
             name = svgTextUtils.plainText(d.name || '', {
                 len: d.nameLength,
                 allowedTags: ['br', 'sub', 'sup', 'b', 'i', 'em']
@@ -970,7 +975,12 @@ function createHoverText(hoverData, opts, gd) {
         var hovertemplateLabels = d.hovertemplateLabels || d;
         var eventData = d.eventData[0] || {};
         if(hovertemplate) {
-            text = Lib.hovertemplateString(hovertemplate, hovertemplateLabels, eventData);
+            text = Lib.hovertemplateString(
+                hovertemplate,
+                hovertemplateLabels,
+                eventData,
+                {meta: fullLayout.meta}
+            );
 
             text = text.replace(EXTRA_STRING_REGEX, function(match, extra) {
                 name = extra; // Assign name for secondary text label

src/components/legend/draw.js

@@ -404,9 +404,13 @@ function drawTexts(g, gd, maxLength) {
     var trace = legendItem.trace;
     var isPie = Registry.traceIs(trace, 'pie');
     var traceIndex = trace.index;
-    var name = isPie ? legendItem.label : trace.name;
     var isEditable = gd._context.edits.legendText && !isPie;
 
+    var name = isPie ? legendItem.label : trace.name;
+    if(fullLayout.meta) {
+        name = Lib.templateString(name, {meta: fullLayout.meta});
+    }
+
     var textEl = Lib.ensureSingle(g, 'text', 'legendtext');
 
     textEl.attr('text-anchor', 'start')

src/components/rangeselector/draw.js

@@ -26,7 +26,6 @@ var FROM_BR = alignmentConstants.FROM_BR;
 var constants = require('./constants');
 var getUpdateObject = require('./get_update_object');
 
-
 module.exports = function draw(gd) {
     var fullLayout = gd._fullLayout;
 
@@ -152,12 +151,16 @@ function drawButtonText(button, selectorLayout, d, gd) {
     });
 
     text.call(Drawing.font, selectorLayout.font)
-        .text(getLabel(d))
+        .text(getLabel(d, gd._fullLayout.meta))
         .call(textLayout);
 }
 
-function getLabel(opts) {
-    if(opts.label) return opts.label;
+function getLabel(opts, meta) {
+    if(opts.label) {
+        return meta ?
+            Lib.templateString(opts.label, {meta: meta}) :
+            opts.label;
+    }
 
     if(opts.step === 'all') return 'all';
 

src/components/sliders/draw.js

@@ -317,6 +317,10 @@ function drawCurrentValue(sliderGroup, sliderOpts, valueOverride) {
         str += valueOverride;
     } else {
         var curVal = sliderOpts.steps[sliderOpts.active].label;
+        var meta = sliderOpts._gd._fullLayout.meta;
+        if(meta) {
+            curVal = Lib.templateString(curVal, {meta: meta});
+        }
         str += curVal;
     }
 
@@ -364,8 +368,14 @@ function drawLabel(item, data, sliderOpts) {
             });
     });
 
+    var tx = data.step.label;
+    var meta = sliderOpts._gd._fullLayout.meta;
+    if(meta) {
+        tx = Lib.templateString(tx, {meta: meta});
+    }
+
     text.call(Drawing.font, sliderOpts.font)
-        .text(data.step.label)
+        .text(tx)
         .call(svgTextUtils.convertToTspans, sliderOpts._gd);
 
     return text;

src/components/updatemenus/draw.js

@@ -442,8 +442,14 @@ function drawItemText(item, menuOpts, itemOpts, gd) {
             });
     });
 
+    var tx = itemOpts.label;
+    var meta = gd._fullLayout.meta;
+    if(meta) {
+        tx = Lib.templateString(tx, {meta: meta});
+    }
+
     text.call(Drawing.font, menuOpts.font)
-        .text(itemOpts.label)
+        .text(tx)
         .call(svgTextUtils.convertToTspans, gd);
 }
 

src/lib/index.js

@@ -994,7 +994,7 @@ lib.numSeparate = function(value, separators, separatethousands) {
     return x1 + x2;
 };
 
-var TEMPLATE_STRING_REGEX = /%{([^\s%{}:]*)(:[^}]*)?}/g;
+lib.TEMPLATE_STRING_REGEX = /%{([^\s%{}:]*)(:[^}]*)?}/g;
 var SIMPLE_PROPERTY_REGEX = /^\w*$/;
 
 /**
@@ -1014,7 +1014,7 @@ lib.templateString = function(string, obj) {
     // just in case it speeds things up *slightly*:
     var getterCache = {};
 
-    return string.replace(TEMPLATE_STRING_REGEX, function(dummy, key) {
+    return string.replace(lib.TEMPLATE_STRING_REGEX, function(dummy, key) {
         if(SIMPLE_PROPERTY_REGEX.test(key)) {
             return obj[key] || '';
         }
@@ -1047,7 +1047,7 @@ lib.hovertemplateString = function(string, labels) {
     // just in case it speeds things up *slightly*:
     var getterCache = {};
 
-    return string.replace(TEMPLATE_STRING_REGEX, function(match, key, format) {
+    return string.replace(lib.TEMPLATE_STRING_REGEX, function(match, key, format) {
         var obj, value, i;
         for(i = 2; i < args.length; i++) {
             obj = args[i];

src/plots/layout_attributes.js

@@ -416,8 +416,9 @@ module.exports = {
         editType: 'plot',
         description: [
             'Assigns extra meta information that can be used in various `text` attributes.',
-            'Attributes such as the graph, axis and colorbar `title.text` and annotation `text`',
-            'support `meta`. One can access `meta` fields using template strings:',
+            'Attributes such as the graph, axis and colorbar `title.text`, annotation `text`',
+            '`trace.name` in legend items, `rangeselector`, `updatemenues` and `sliders` `label` text',
+            'all support `meta`. One can access `meta` fields using template strings:',
             '`%{meta[i]}` where `i` is the index of the `meta`',
             'item in question.'
         ].join(' ')

test/image/mocks/layout_metatext.json

@@ -1,6 +1,8 @@
 {
   "data": [{
-    "y": [1, 2, 1]
+    "x": ["2019-01-01", "2019-02-10", "2019-03-24"],
+    "y": [1, 2, 1],
+    "name": "TRACE %{meta[3]}"
   }, {
     "type": "scatterpolar",
     "r": [1, 2, 1]
@@ -29,12 +31,20 @@
     "width": 700,
     "height": 800,
     "margin": {"b": 40},
-    "showlegend": false,
 
     "title": {"text": "This graph is %{meta[2]}"},
     "xaxis": {
       "domain": {"row": 0, "column": 0},
-      "title": {"text": "Worth more than %{meta[4]} %{meta[1]}"}
+      "title": {"text": "Worth more than %{meta[4]} %{meta[1]}"},
+      "rangeselector": {
+        "buttons": [{
+          "step": "all"
+        }, {
+          "step": "month",
+          "count": 2,
+          "label": "backup %{meta[2]}"
+        }]
+      }
     },
     "yaxis": {
       "domain": {"row": 0, "column": 0},
@@ -78,8 +88,30 @@
       "text": "<i>N.B.</i> %{meta[2]}",
       "xref": "x",
       "yref": "y",
-      "x": 1,
+      "x": "2019-02-10",
       "y": 2
+    }],
+
+    "updatemenus": [{
+      "buttons": [{
+        "label": "Btn-%{meta[0]}",
+        "method": "restyle",
+        "args": ["visible", false]
+      }],
+      "y": 1,
+      "yanchor": "bottom"
+    }],
+
+    "sliders": [{
+      "steps": [{
+        "label": "step-%{meta[0]}",
+        "method": "restyle",
+        "args": ["marker.color", "red"]
+      }, {
+        "label": "step-%{meta[1]}",
+        "method": "restyle",
+        "args": ["marker.color", "blue"]
+      }]
     }]
   }
 }

test/jasmine/tests/hover_label_test.js

@@ -1733,6 +1733,51 @@ describe('hover info', function() {
             .catch(failTest)
             .then(done);
         });
+
+        it('should work with layout.meta references', function(done) {
+            var gd = document.getElementById('graph');
+
+            Plotly.update(gd,
+                {hovertemplate: 'TRACE -- %{meta[0]}<extra>%{meta[1]}</extra>'},
+                {meta: ['A', '$$$']}
+            ).then(function() {
+                Fx.hover('graph', evt, 'xy');
+
+                assertHoverLabelContent({
+                    nums: 'TRACE -- A',
+                    name: '$$$',
+                    axis: '0.388'
+                });
+            })
+            .catch(failTest)
+            .then(done);
+        });
+    });
+
+    it('should work with trace.name linked to layout.meta', function(done) {
+        var gd = createGraphDiv();
+
+        Plotly.plot(gd, [{
+            y: [1, 1, 1],
+            name: '%{meta[0]}',
+            marker: {size: 40}
+        }, {
+            y: [1]
+        }], {
+            meta: ['yo!'],
+            width: 400,
+            height: 400
+        })
+        .then(function() { _hoverNatural(gd, 200, 200); })
+        .then(function() {
+            assertHoverLabelContent({
+                nums: '1',
+                name: 'yo!',
+                axis: '2'
+            });
+        })
+        .catch(failTest)
+        .then(done);
     });
 });