Filter fixes

src/lib/coerce.js

@@ -458,6 +458,17 @@ exports.findArrayAttributes = function(trace) {
 
     exports.crawl(trace._module.attributes, callback);
 
+    if(trace.transforms) {
+        var transforms = trace.transforms;
+
+        for(var i = 0; i < transforms.length; i++) {
+            var transform = transforms[i];
+
+            stack = ['transforms[' + i + ']'];
+            exports.crawl(transform._module.attributes, callback, 1);
+        }
+    }
+
     // Look into the fullInput module attributes for array attributes
     // to make sure that 'custom' array attributes are detected.
     //

src/plot_api/helpers.js

@@ -340,6 +340,24 @@ exports.cleanData = function(data, existingData) {
             }
         }
 
+        // transforms backward compatibility fixes
+        if(Array.isArray(trace.transforms)) {
+            var transforms = trace.transforms;
+
+            for(i = 0; i < transforms.length; i++) {
+                var transform = transforms[i];
+
+                if(!Lib.isPlainObject(transform)) continue;
+
+                if(transform.type === 'filter') {
+                    if(transform.filtersrc) {
+                        transform.target = transform.filtersrc;
+                        delete transform.filtersrc;
+                    }
+                }
+            }
+        }
+
         // prune empty containers made before the new nestedProperty
         if(emptyContainer(trace, 'line')) delete trace.line;
         if('marker' in trace) {

src/plots/plots.js

@@ -807,6 +807,7 @@ function supplyTransformDefaults(traceIn, traceOut, layout) {
         if(_module && _module.supplyDefaults) {
             transformOut = _module.supplyDefaults(transformIn, traceOut, layout, traceIn);
             transformOut.type = type;
+            transformOut._module = _module;
         }
         else {
             transformOut = Lib.extendFlat({}, transformIn);

src/transforms/filter.js

@@ -9,6 +9,7 @@
 'use strict';
 
 var Lib = require('../lib');
+var Plots = require('../plots/plots');
 var axisIds = require('../plots/cartesian/axis_ids');
 
 var INEQUALITY_OPS = ['=', '<', '>=', '>', '<='];
@@ -27,18 +28,22 @@ exports.attributes = {
             'Determines whether this filter transform is enabled or disabled.'
         ].join(' ')
     },
-    filtersrc: {
+    target: {
         valType: 'string',
         strict: true,
         noBlank: true,
+        arrayOk: true,
         dflt: 'x',
         description: [
-            'Sets the variable in the parent trace object',
-            'by which the filter will be applied.',
+            'Sets the filter target by which the filter is applied.',
 
+            'If a string, *target* is assumed to be a reference to a data array',
+            'in the parent trace object.',
             'To filter about nested variables, use *.* to access them.',
-            'For example, set `filtersrc` to *marker.color* to filter',
-            'about the marker color array.'
+            'For example, set `target` to *marker.color* to filter',
+            'about the marker color array.',
+
+            'If an array, *target* is then the data array by which the filter is applied.'
         ].join(' ')
     },
     operation: {
@@ -77,7 +82,7 @@ exports.attributes = {
             'Sets the value or values by which to filter by.',
 
             'Values are expected to be in the same type as the data linked',
-            'to *filtersrc*.',
+            'to *target*.',
 
             'When `operation` is set to one of the inequality values',
             '(' + INEQUALITY_OPS + ')',
@@ -108,25 +113,24 @@ exports.supplyDefaults = function(transformIn) {
     if(enabled) {
         coerce('operation');
         coerce('value');
-        coerce('filtersrc');
+        coerce('target');
     }
 
     return transformOut;
 };
 
 exports.calcTransform = function(gd, trace, opts) {
-    var filtersrc = opts.filtersrc,
-        filtersrcOk = filtersrc && Array.isArray(Lib.nestedProperty(trace, filtersrc).get());
-
-    if(!opts.enabled || !filtersrcOk) return;
+    if(!opts.enabled) return;
 
-    var dataToCoord = getDataToCoordFunc(gd, trace, filtersrc),
-        filterFunc = getFilterFunc(opts, dataToCoord);
+    var target = opts.target,
+        filterArray = getFilterArray(trace, target),
+        len = filterArray.length;
 
-    var filterArr = Lib.nestedProperty(trace, filtersrc).get(),
-        len = filterArr.length;
+    if(!len) return;
 
-    var arrayAttrs = Lib.findArrayAttributes(trace),
+    var dataToCoord = getDataToCoordFunc(gd, trace, target),
+        filterFunc = getFilterFunc(opts, dataToCoord),
+        arrayAttrs = Lib.findArrayAttributes(trace),
         originalArrays = {};
 
     // copy all original array attribute values,
@@ -147,7 +151,7 @@ exports.calcTransform = function(gd, trace, opts) {
     }
 
     for(var i = 0; i < len; i++) {
-        var v = filterArr[i];
+        var v = filterArray[i];
 
         if(!filterFunc(v)) continue;
 
@@ -157,18 +161,45 @@ exports.calcTransform = function(gd, trace, opts) {
     }
 };
 
-function getDataToCoordFunc(gd, trace, filtersrc) {
-    var ax = axisIds.getFromTrace(gd, trace, filtersrc);
+function getFilterArray(trace, target) {
+    if(typeof target === 'string' && target) {
+        var array = Lib.nestedProperty(trace, target).get();
+
+        return Array.isArray(array) ? array : [];
+    }
+    else if(Array.isArray(target)) return target.slice();
+
+    return false;
+}
+
+function getDataToCoordFunc(gd, trace, target) {
+    var ax;
+
+    // In the case of an array target, make a mock data array
+    // and call supplyDefaults to the data type and
+    // setup the data-to-calc method.
+    if(Array.isArray(target)) {
+        var mockGd = {
+            data: [{ x: target }],
+            layout: {}
+        };
+
+        Plots.supplyDefaults(mockGd);
+        ax = mockGd._fullLayout.xaxis;
+    }
+    else {
+        ax = axisIds.getFromTrace(gd, trace, target);
+    }
 
-    // if 'filtersrc' has corresponding axis
+    // if 'target' has corresponding axis
     // -> use setConvert method
     if(ax) return ax.d2c;
 
     // special case for 'ids'
     // -> cast to String
-    if(filtersrc === 'ids') return function(v) { return String(v); };
+    if(target === 'ids') return function(v) { return String(v); };
 
-    // otherwise
+    // otherwise (e.g. numeric-array of 'marker.color' or 'marker.size')
     // -> cast to Number
     return function(v) { return +v; };
 }

test/jasmine/tests/finance_test.js

@@ -423,7 +423,7 @@ describe('finance charts calc transforms:', function() {
             transforms: [{
                 type: 'filter',
                 operation: '>',
-                filtersrc: 'open',
+                target: 'open',
                 value: 33
             }]
         });
@@ -433,7 +433,7 @@ describe('finance charts calc transforms:', function() {
             transforms: [{
                 type: 'filter',
                 operation: '{}',
-                filtersrc: 'x',
+                target: 'x',
                 value: ['2016-09-01', '2016-09-10']
             }]
         });

test/jasmine/tests/plot_api_test.js

@@ -995,6 +995,35 @@ describe('Test plot api', function() {
 
             expect(gd.data[1].contours).toBeUndefined();
         });
+
+        it('should rename *filtersrc* to *target* in filter transforms', function() {
+            var data = [{
+                transforms: [{
+                    type: 'filter',
+                    filtersrc: 'y'
+                }, {
+                    type: 'filter',
+                    operation: '<'
+                }]
+            }, {
+                transforms: [{
+                    type: 'filter',
+                    target: 'y'
+                }]
+            }];
+
+            Plotly.plot(gd, data);
+
+            var trace0 = gd.data[0],
+                trace1 = gd.data[1];
+
+            expect(trace0.transforms.length).toEqual(2);
+            expect(trace0.transforms[0].filtersrc).toBeUndefined();
+            expect(trace0.transforms[0].target).toEqual('y');
+
+            expect(trace1.transforms.length).toEqual(1);
+            expect(trace1.transforms[0].target).toEqual('y');
+        });
     });
 
     describe('Plotly.update should', function() {

test/jasmine/tests/plotschema_test.js

@@ -176,7 +176,7 @@ describe('plot schema', function() {
         var valObjects = plotSchema.transforms.filter.attributes,
             attrNames = Object.keys(valObjects);
 
-        ['operation', 'value', 'filtersrc'].forEach(function(k) {
+        ['operation', 'value', 'target'].forEach(function(k) {
             expect(attrNames).toContain(k);
         });
     });