DragFeature control should trigger afterfeaturemodified, r=crschmidt (closes #3277)

lib/OpenLayers/Control/DragFeature.js

@@ -26,10 +26,14 @@ OpenLayers.Control.DragFeature = OpenLayers.Class(OpenLayers.Control, {
      *     send a list of strings corresponding to the geometry class names.
      */
     geometryTypes: null,
-    
+
     /**
      * APIProperty: onStart
-     * {Function} Define this function if you want to know when a drag starts.
+     * {Function} *Deprecated*.  Register for "beforefeaturemodified" instead.
+     *     The "beforefeaturemodified" event is triggered on the layer before
+     *     any modification begins.
+     *
+     * Define this function if you want to know when a drag starts.
      *     The function should expect to receive two arguments: the feature
      *     that is about to be dragged and the pixel location of the mouse.
      *
@@ -42,7 +46,11 @@ OpenLayers.Control.DragFeature = OpenLayers.Class(OpenLayers.Control, {
 
     /**
      * APIProperty: onDrag
-     * {Function} Define this function if you want to know about each move of a
+     * {Function} *Deprecated*.  Register for "featuremodified" instead.
+     *     The "featuremodified" event is triggered on the layer with each
+     *     feature modification.
+     *
+     * Define this function if you want to know about each move of a
      *     feature. The function should expect to receive two arguments: the
      *     feature that is being dragged and the pixel location of the mouse.
      *
@@ -54,7 +62,11 @@ OpenLayers.Control.DragFeature = OpenLayers.Class(OpenLayers.Control, {
 
     /**
      * APIProperty: onComplete
-     * {Function} Define this function if you want to know when a feature is
+     * {Function} *Deprecated*.  Register for "afterfeaturemodified" instead.
+     *     The "afterfeaturemodified" event is triggered on the layer after
+     *     a feature has been modified.
+     *
+     * Define this function if you want to know when a feature is
      *     done dragging. The function should expect to receive two arguments:
      *     the feature that is being dragged and the pixel location of the
      *     mouse.
@@ -273,6 +285,9 @@ OpenLayers.Control.DragFeature = OpenLayers.Class(OpenLayers.Control, {
     downFeature: function(pixel) {
         this.lastPixel = pixel;
         this.onStart(this.feature, pixel);
+        return this.layer.events.triggerEvent(
+            "beforefeaturemodified", {feature: this.feature}
+        );
     },
 
     /**
@@ -290,6 +305,8 @@ OpenLayers.Control.DragFeature = OpenLayers.Class(OpenLayers.Control, {
         this.layer.drawFeature(this.feature);
         this.lastPixel = pixel;
         this.onDrag(this.feature, pixel);
+        this.layer.events.triggerEvent("featuremodified",
+                                       {feature: this.feature});
     },
 
     /**
@@ -315,6 +332,9 @@ OpenLayers.Control.DragFeature = OpenLayers.Class(OpenLayers.Control, {
      */
     doneDragging: function(pixel) {
         this.onComplete(this.feature, pixel);
+        this.layer.events.triggerEvent("afterfeaturemodified", {
+            feature: this.feature
+        });
     },
 
     /**

tests/Control/DragFeature.html

@@ -168,9 +168,13 @@
     }
 
     function test_Control_DragFeature_move(t) {
-        t.plan(3);
+        t.plan(5);
         var map = new OpenLayers.Map("map");
         var layer = new OpenLayers.Layer.Vector();
+        layer.events.on({
+            'beforefeaturemodified': function(evt) { t.ok(true, "beforefeaturemodified is triggered on the layer"); },
+            'featuremodified': function(evt) { t.ok(true, "featuremodified is triggered on the layer"); }
+        });
         map.addLayer(layer);
         var control = new OpenLayers.Control.DragFeature(layer);
         map.addControl(control);
@@ -257,10 +261,13 @@
     }
     
     function test_Control_DragFeature_done(t) {
-        t.plan(2);
+        t.plan(3);
         var map = new OpenLayers.Map("map");
         var layer = new OpenLayers.Layer.Vector();
         map.addLayer(layer);
+        layer.events.on({
+            'afterfeaturemodified': function(evt) { t.ok(true, "afterfeaturemodified is triggered on the layer"); }
+        });
         var control = new OpenLayers.Control.DragFeature(layer);
         map.addControl(control);