Added fields tooltip and showLegend to defaults

lib/graph3d/Graph3d.js

@@ -107,6 +107,8 @@ var DEFAULTS = {
   // Following not in OPTIONKEYS because they require special handling,
 
   style            : Graph3d.STYLE.DOT,
+  tooltip          : false,
+  showLegend       : undefined,     // auto by default (based on graph style)
   backgroundColor  : undefined,
 
   dataColor        : {
@@ -203,10 +205,11 @@ function Graph3d(container, data, options) {
   forceCopy(DEFAULTS, this, OPTIONKEYS);
 
   // Following are internal fields, not part of the user settings
-  this.margin = 10; // px
-  this.showGrayBottom = false; // TODO: this does not work correctly
+  this.margin = 10;                   // px
+  this.showGrayBottom = false;       // TODO: this does not work correctly
   this.showTooltip = false;
-  this.dotSizeRatio = 0.02; // size of the dots as a fraction of the graph width
+  this.dotSizeRatio = 0.02;          // size of the dots as a fraction of the graph width
+  this.eye = new Point3d(0, 0, -1);  // TODO: set eye.z about 3/4 of the width of the window?
 
   // Handle the more complex ('special') fields
   this._setSpecialSettings(DEFAULTS, this);
@@ -215,9 +218,6 @@ function Graph3d(container, data, options) {
   // These require special attention in some way
   // TODO: handle these
 
-  this.showLegend  = undefined; // auto by default (based on graph style)
-
-  this.eye = new Point3d(0, 0, -1);  // TODO: set eye.z about 3/4 of the width of the window?
 
   // the column indexes
   this.colX = undefined;
@@ -418,16 +418,41 @@ Graph3d.prototype._setSpecialSettings = function(src, dst) {
 
   this._setDataColor(src.dataColor, dst);
   this._setStyle(src.style, dst);
+  this._setShowLegend(src.showLegend, dst);
   this._setCameraPosition(src.cameraPosition, dst);
 
-/* TODO
-
+  // As special fields go, this is an easy one; just a translation of the name.
+  // Can't use this.tooltip directly, because that field exists internally
   if (src.tooltip !== undefined) {
     dst.showTooltip = src.tooltip;
   }
+};
 
-End TODO */
-}
+
+/**
+ * Set the value of setting 'showLegend'
+ *
+ * This depends on the value of the style fields, so it must be called
+ * after the style field has been initialized.
+ */
+Graph3d.prototype._setShowLegend = function(showLegend, dst) {
+  if (showLegend === undefined) {
+    // If the default was auto, make a choice for this field
+    var isAutoByDefault = (DEFAULTS.showLegend === undefined);
+
+    if (isAutoByDefault) {
+      // these styles default to having legends
+      var isLegendGraphStyle = this.style === Graph3d.STYLE.DOTCOLOR
+                            || this.style === Graph3d.STYLE.DOTSIZE;
+
+      this.showLegend = isLegendGraphStyle;
+    } else {
+       // Leave current value as is
+    }
+  } else {
+    dst.showLegend = showLegend;
+  }
+};
 
 
 Graph3d.prototype._setStyle = function(style, dst) {
@@ -461,7 +486,7 @@ Graph3d.prototype._setStyle = function(style, dst) {
   }
 
   dst.style = styleNumber;
-}
+};
 
 
 
@@ -519,7 +544,7 @@ Graph3d.prototype._setDataColor = function(dataColor, dst) {
       dst.dataColor.strokeWidth = dataColor.strokeWidth;
     }
   }
-}
+};
 
 
 Graph3d.prototype._setCameraPosition = function(cameraPosition, dst) {
@@ -792,10 +817,6 @@ Graph3d.prototype._dataInitialize = function (rawData, style) {
     if (this.valueMax <= this.valueMin) this.valueMax = this.valueMin + 1;
   }
   
-  // these styles default to having legends
-  var isLegendGraphStyle =  this.style === Graph3d.STYLE.DOTCOLOR || this.style === Graph3d.STYLE.DOTSIZE;
-  this.showLegend        =  (this.defaultShowLegend !== undefined) ? this.defaultShowLegend : isLegendGraphStyle;
-                                                             
   // set the scale dependent on the ranges.
   this._setScale();
 };
@@ -1134,8 +1155,6 @@ Graph3d.prototype.setOptions = function (options) {
     this._setSpecialSettings(options, this);
 
     // Handle the rest of the parameters
-    if (options.showLegend  !== undefined)      this.defaultShowLegend = options.showLegend; 
-
     if (options.tooltip !== undefined) this.showTooltip = options.tooltip;
 
     if (options.xBarWidth !== undefined) this.defaultXBarWidth = options.xBarWidth;