Minor updates to Doctests.

dist/iwmlib.js

@@ -2974,6 +2974,20 @@
 
     /* eslint-disable no-unused-vars */
 
+    /** This interface allows scatters to delegate tap events to other objects. */
+    class ITapDelegate extends Interface {
+
+        /** This method must be defined by the delegate. It handles the tap event. */
+        tap(event) {
+
+        }
+
+        /** Tells the delegate that it should handle standard click events. */
+        handleClicks() {
+
+        }
+    }
+
     /**
      * A base class for scatter specific events.
      *
@@ -7737,6 +7751,7 @@
     window.IApp = IApp;
     window.IInteractionMapperTarget = IInteractionMapperTarget;
     window.IInteractionTarget = IInteractionTarget;
+    window.ITapDelegate = ITapDelegate;
     window.Index = Index;
     window.Inspect = Inspect;
     window.Interaction = Interaction;

lib/bundle.js

@@ -15,7 +15,7 @@ import {EventRecorder} from './events.js'
 import {FrameContainer, FrameTarget} from './frames.js'
 import {Inspect} from './inspect.js'
 import {PointMap, InteractionPoints, Interaction, IInteractionTarget, InteractionDelta, InteractionMapper, InteractionDelegate, IInteractionMapperTarget} from './interaction.js'
-import {ResizeEvent, DOMScatterContainer, AbstractScatter, DOMScatter, ScatterEvent, BaseEvent} from './scatter.js'
+import {ITapDelegate, ResizeEvent, DOMScatterContainer, AbstractScatter, DOMScatter, ScatterEvent, BaseEvent} from './scatter.js'
 import {Cycle, Colors, Elements, Angle, Dates, Points, Polygon, Rect, Sets, Strings, isEmpty, getId, lerp, debounce, randomInt, randomFloat, LowPassFilter} from './utils.js'
 import UITest from './uitest.js'
 
@@ -54,6 +54,7 @@ window.FrameTarget = FrameTarget
 window.IApp = IApp
 window.IInteractionMapperTarget = IInteractionMapperTarget
 window.IInteractionTarget = IInteractionTarget
+window.ITapDelegate = ITapDelegate
 window.Index = Index
 window.Inspect = Inspect
 window.Interaction = Interaction

lib/card/index.html

@@ -76,6 +76,8 @@
 
     <script class="doctest">
 
+        Doctest.expect(ITapDelegate.implementedBy(CardWrapper), true)
+
         const wrapper1 = new CardWrapper(demoCardWithOnClick)
         wrapper1.handleClicksAsTaps()
 
@@ -92,8 +94,8 @@
     <h2>
         Using Cards within Scatters
     </h2>
-    <p>Cards can be used within scatters. Since the CardWrapper implements the TapDelegate protocol they can simply
-        be attached to a DOMScatter object.
+    <p>Cards can be used within scatters. Since the <code>CardWrapper</code> implements the <code>ITapDelegate</code> protocol they can simply
+        be attached to a DOMScatter object. See the <a href="../scatter.html">Scatter Doctest</a>.
     </p>
     <div class="interactive grayBorder" style="position: relative;">
     </div>

lib/scatter.html

@@ -90,7 +90,8 @@ elements under or nearby the event position and calls the click handler. Thus ge
 can be disambiguated as moves, zooms. or taps.
 
 Note that on touch devices you can tap beside the object if you use an object that implements the ITapDelegate interface. 
-An ITapDelegate allowes a distance that can be configured by allowClickDistance. The default value is 44px.
+An ITapDelegate allowes a distance that can be configured by allowClickDistance. The default value is 44px but here we
+use 88px.
 </p>
 
 <div id="contentExample" class="grayBorder interactive" style="position: relative; width: 100%; height: 280px;">
@@ -111,7 +112,7 @@ An ITapDelegate allowes a distance that can be configured by allowClickDistance.
   
     let contentContainer = new DOMScatterContainer(contentExample)
 
-    let tapDelegate = new CardWrapper(interactiveContent)
+    let tapDelegate = new CardWrapper(interactiveContent, { allowClickDistance: 88})
     new DOMScatter(interactiveContent, contentContainer, {
                         x: 44,
                         y: 44,