Merge pull request #143 from jorix/stop-freehand

Handler.Path: Stop freehand using "maxVertices"

lib/OpenLayers/Handler/Path.js

@@ -30,8 +30,7 @@ OpenLayers.Handler.Path = OpenLayers.Class(OpenLayers.Handler.Point, {
      * APIProperty: maxVertices
      * {Number} The maximum number of vertices which can be drawn by this
      * handler. When the number of vertices reaches maxVertices, the
-     * geometry is automatically finalized. This property doesn't
+     * geometry is automatically finalized. Default is null.
-     * apply if freehand is set. Default is null.
      */
     maxVertices: null,
 
@@ -446,7 +445,13 @@ OpenLayers.Handler.Path = OpenLayers.Class(OpenLayers.Handler.Point, {
             if(this.persist) {
                 this.destroyPersistedFeature();
             }
-            this.addPoint(evt.xy);
+            if(this.maxVertices && this.line &&
+                    this.line.geometry.components.length === this.maxVertices) {
+                this.removePoint()
+                this.finalize();
+            } else {
+                this.addPoint(evt.xy);
+            }
             return false;
         }
         if (!this.touch && (!this.mouseDown || this.stoppedDown)) {

tests/Handler/Path.html

@@ -534,6 +534,43 @@
         map.destroy();
     }
 
+    function test_freehand_maxVertices(t) {
+        t.plan(1);
+        var map = new OpenLayers.Map("map", {
+            resolutions: [1]
+        });
+        var layer = new OpenLayers.Layer.Vector("foo", {
+            maxExtent: new OpenLayers.Bounds(-10, -10, 10, 10),
+            isBaseLayer: true
+        });
+        map.addLayer(layer);
+        var control = new OpenLayers.Control({});
+        var log = {};
+        var MAX_VERTICES = 2;
+        var doneCallback = function(geo) {
+            t.eq(geo.components.length, MAX_VERTICES,
+                'When maxVertices is reached, the geometry is finalized automatically');
+        };
+        var handler = new OpenLayers.Handler.Path(control, 
+            {'done': doneCallback}, 
+            {freehand: true, 
+             maxVertices: MAX_VERTICES});
+        control.handler = handler;
+        map.addControl(control);
+        map.setCenter(new OpenLayers.LonLat(0, 0), 0);
+
+        // mock up feature freehand drawing
+        handler.activate();
+        var evt = {xy: new OpenLayers.Pixel(0, 0)};
+        handler.mousemove(evt);
+        handler.mousedown(evt);
+        evt = {xy: new OpenLayers.Pixel(20, 20)};
+        handler.mousemove(evt);
+        evt = {xy: new OpenLayers.Pixel(40, 40)};
+        handler.mousemove(evt);
+        map.destroy();
+    }
+    
     /**
      * Helper functions for editing method tests
      */