plots: pass user layout to transforms

- so that transform writing can set layout option
  during transform step

Author: etpinard

src/plots/plots.js

@@ -369,7 +369,7 @@ plots.supplyDefaults = function(gd) {
 
     // then do the data
     newFullLayout._globalTransforms = (gd._context || {}).globalTransforms;
-    plots.supplyDataDefaults(newData, newFullData, newFullLayout);
+    plots.supplyDataDefaults(newData, newFullData, newLayout, newFullLayout);
 
     // attach helper method to check whether a plot type is present on graph
     newFullLayout._has = plots._hasPlotType.bind(newFullLayout);
@@ -593,9 +593,9 @@ plots.linkSubplots = function(newFullData, newFullLayout, oldFullData, oldFullLa
     }
 };
 
-plots.supplyDataDefaults = function(dataIn, dataOut, layout) {
-    var modules = layout._modules = [],
-        basePlotModules = layout._basePlotModules = [],
+plots.supplyDataDefaults = function(dataIn, dataOut, layout, fullLayout) {
+    var modules = fullLayout._modules = [],
+        basePlotModules = fullLayout._basePlotModules = [],
         cnt = 0;
 
     function pushModule(fullTrace) {
@@ -612,18 +612,18 @@ plots.supplyDataDefaults = function(dataIn, dataOut, layout) {
 
     for(var i = 0; i < dataIn.length; i++) {
         var trace = dataIn[i],
-            fullTrace = plots.supplyTraceDefaults(trace, cnt, layout);
+            fullTrace = plots.supplyTraceDefaults(trace, cnt, fullLayout);
 
         fullTrace.index = i;
         fullTrace._input = trace;
         fullTrace._expandedIndex = cnt;
 
         if(fullTrace.transforms && fullTrace.transforms.length) {
-            var expandedTraces = applyTransforms(fullTrace, dataOut, layout);
+            var expandedTraces = applyTransforms(fullTrace, dataOut, layout, fullLayout);
 
             for(var j = 0; j < expandedTraces.length; j++) {
                 var expandedTrace = expandedTraces[j],
-                    fullExpandedTrace = plots.supplyTraceDefaults(expandedTrace, cnt, layout);
+                    fullExpandedTrace = plots.supplyTraceDefaults(expandedTrace, cnt, fullLayout);
 
                 // mutate uid here using parent uid and expanded index
                 // to promote consistency between update calls
@@ -816,7 +816,7 @@ function supplyTransformDefaults(traceIn, traceOut, layout) {
     }
 }
 
-function applyTransforms(fullTrace, fullData, layout) {
+function applyTransforms(fullTrace, fullData, layout, fullLayout) {
     var container = fullTrace.transforms,
         dataOut = [fullTrace];
 
@@ -830,6 +830,7 @@ function applyTransforms(fullTrace, fullData, layout) {
                 fullTrace: fullTrace,
                 fullData: fullData,
                 layout: layout,
+                fullLayout: fullLayout,
                 transformIndex: i
             });
         }