Allow customization of tooltip delay.

.gitignore

@@ -1,4 +1,5 @@
 .idea
+*.iml
 node_modules
 .project
 .settings/.jsdtscope

dist/vis.js

@@ -16170,7 +16170,10 @@ function Graph (container, data, options) {
     smoothCurves: true,
     maxVelocity:  10,
     minVelocity:  0.1,   // px/s
-    stabilizationIterations: 1000  // maximum number of iteration to stabilize
+    stabilizationIterations: 1000,  // maximum number of iteration to stabilize
+    tooltip: {
+      delay: 300
+    }
   };
   this.editMode = this.constants.dataManipulation.initiallyVisible;
 
@@ -16667,6 +16670,14 @@ Graph.prototype.setOptions = function (options) {
         }
       }
     }
+
+    if (options.tooltip) {
+      for (prop in options.tooltip) {
+        if (options.tooltip.hasOwnProperty(prop)) {
+          this.constants.tooltip[prop] = options.tooltip[prop];
+        }
+      }
+    }
   }
 
 
@@ -17110,7 +17121,7 @@ Graph.prototype._onMouseMoveTitle = function (event) {
     clearInterval(this.popupTimer); // stop any running calculationTimer
   }
   if (!this.drag.dragging) {
-    this.popupTimer = setTimeout(checkShow, 300);
+    this.popupTimer = setTimeout(checkShow, this.constants.tooltip.delay);
   }
 };
 

src/graph/Graph.js

@@ -151,7 +151,10 @@ function Graph (container, data, options) {
     smoothCurves: true,
     maxVelocity:  10,
     minVelocity:  0.1,   // px/s
-    stabilizationIterations: 1000  // maximum number of iteration to stabilize
+    stabilizationIterations: 1000,  // maximum number of iteration to stabilize
+    tooltip: {
+      delay: 300
+    }
   };
   this.editMode = this.constants.dataManipulation.initiallyVisible;
 
@@ -648,6 +651,14 @@ Graph.prototype.setOptions = function (options) {
         }
       }
     }
+
+    if (options.tooltip) {
+      for (prop in options.tooltip) {
+        if (options.tooltip.hasOwnProperty(prop)) {
+          this.constants.tooltip[prop] = options.tooltip[prop];
+        }
+      }
+    }
   }
 
 
@@ -1091,7 +1102,7 @@ Graph.prototype._onMouseMoveTitle = function (event) {
     clearInterval(this.popupTimer); // stop any running calculationTimer
   }
   if (!this.drag.dragging) {
-    this.popupTimer = setTimeout(checkShow, 300);
+    this.popupTimer = setTimeout(checkShow, this.constants.tooltip.delay);
   }
 };