Merge branch 'master' of github.com:danvk/dygraphs

[dygraphs.git] / dygraph.js

diff --git a/dygraph.js b/dygraph.js
index 2045e9e..da2a11a 100644 (file)
--- a/dygraph.js
+++ b/dygraph.js
@@ -61,17 +61,15 @@
  * whether the input data contains error ranges. For a complete list of
  * options, see http://dygraphs.com/options.html.
  */
-var Dygraph = function(div, data, opts) {
-  if (arguments.length > 0) {
-    if (arguments.length == 4) {
-      // Old versions of dygraphs took in the series labels as a constructor
-      // parameter. This doesn't make sense anymore, but it's easy to continue
-      // to support this usage.
-      this.warn("Using deprecated four-argument dygraph constructor");
-      this.__old_init__(div, data, arguments[2], arguments[3]);
-    } else {
-      this.__init__(div, data, opts);
-    }
+var Dygraph = function(div, data, opts, opt_fourth_param) {
+  if (opt_fourth_param !== undefined) {
+    // Old versions of dygraphs took in the series labels as a constructor
+    // parameter. This doesn't make sense anymore, but it's easy to continue
+    // to support this usage.
+    this.warn("Using deprecated four-argument dygraph constructor");
+    this.__old_init__(div, data, opts, opt_fourth_param);
+  } else {
+    this.__init__(div, data, opts);
   }
 };
 
@@ -851,12 +849,12 @@ Dygraph.prototype.createInterface_ = function() {
   var dygraph = this;
   
   this.mouseMoveHandler = function(e) {
-         dygraph.mouseMove_(e);
+    dygraph.mouseMove_(e);
   };
   Dygraph.addEvent(this.mouseEventElement_, 'mousemove', this.mouseMoveHandler);
   
   this.mouseOutHandler = function(e) {
-         dygraph.mouseOut_(e);
+    dygraph.mouseOut_(e);
   };
   Dygraph.addEvent(this.mouseEventElement_, 'mouseout', this.mouseOutHandler);
 
@@ -888,6 +886,7 @@ Dygraph.prototype.destroy = function() {
   // remove mouse event handlers
   Dygraph.removeEvent(this.mouseEventElement_, 'mouseout', this.mouseOutHandler);
   Dygraph.removeEvent(this.mouseEventElement_, 'mousemove', this.mouseMoveHandler);
+  Dygraph.removeEvent(this.mouseEventElement_, 'mousemove', this.mouseUpHandler_);
   removeRecursive(this.maindiv_);
 
   var nullOut = function(obj) {
@@ -1014,6 +1013,7 @@ Dygraph.prototype.createStatusMessage_ = function() {
       "top": "0px",
       "left": (this.width_ - divWidth - 2) + "px",
       "background": "white",
+      "lineHeight": "normal",
       "textAlign": "left",
       "overflow": "hidden"};
     Dygraph.update(messagestyle, this.attr_('labelsDivStyles'));
@@ -1120,6 +1120,7 @@ Dygraph.prototype.createDragInterface_ = function() {
     prevEndX: null, // pixel coordinates
     prevEndY: null, // pixel coordinates
     prevDragDirection: null,
+    cancelNextDblclick: false,  // see comment in dygraph-interaction-model.js
 
     // The value on the left side of the graph when a pan operation starts.
     initialLeftmostDate: null,
@@ -1156,6 +1157,7 @@ Dygraph.prototype.createDragInterface_ = function() {
       context.py = Dygraph.findPosY(g.canvas_);
       context.dragStartX = g.dragGetX_(event, context);
       context.dragStartY = g.dragGetY_(event, context);
+      context.cancelNextDblclick = false;
     }
   };
 
@@ -1179,7 +1181,7 @@ Dygraph.prototype.createDragInterface_ = function() {
 
   // If the user releases the mouse button during a drag, but not over the
   // canvas, then it doesn't count as a zooming action.
-  Dygraph.addEvent(document, 'mouseup', function(event) {
+  this.mouseUpHandler_ = function(event) {
     if (context.isZooming || context.isPanning) {
       context.isZooming = false;
       context.dragStartX = null;
@@ -1195,7 +1197,9 @@ Dygraph.prototype.createDragInterface_ = function() {
         delete self.axes_[i].dragValueRange;
       }
     }
-  });
+  };
+
+  Dygraph.addEvent(document, 'mouseup', this.mouseUpHandler_);
 };
 
 /**
@@ -1842,6 +1846,8 @@ Dygraph.prototype.generateLegendHTML_ = function(x, sel_points, oneEmWidth) {
  */
 Dygraph.prototype.setLegendHTML_ = function(x, sel_points) {
   var labelsDiv = this.attr_("labelsDiv");
+  if (!labelsDiv) return;
+
   var sizeSpan = document.createElement('span');
   // Calculates the width of 1em in pixels for the legend.
   sizeSpan.setAttribute('style', 'margin: 0; padding: 0 0 0 1em; border: 0;');
@@ -2318,6 +2324,26 @@ Dygraph.prototype.gatherDatasets_ = function(rolledSeries, dateWindow) {
     datasets[i] = series;
   }
 
+  // For stacked graphs, a NaN value for any point in the sum should create a
+  // clean gap in the graph. Back-propagate NaNs to all points at this X value.
+  if (this.attr_("stackedGraph")) {
+    for (k = datasets.length - 1; k >= 0; --k) {
+      // Use the first nonempty dataset to get X values.
+      if (!datasets[k]) continue;
+      for (j = 0; j < datasets[k].length; j++) {
+        var x = datasets[k][j][0];
+        if (isNaN(cumulative_y[x])) {
+          // Set all Y values to NaN at that X value.
+          for (i = datasets.length - 1; i >= 0; i--) {
+            if (!datasets[i]) continue;
+            datasets[i][j][1] = NaN;
+          }
+        }
+      }
+      break;
+    }
+  }
+
   return [ datasets, extremes, boundaryIds ];
 };