Remove ol.geom.GeometryEvent

This removes geometry specific change events.  Since geometries are mere observables, we only get generic change events.  To minimize changes in other places, as a workaround, we cache geometry bounds on features.  This is not the way things should be long term, but the objective is to remove the geometry specific event.

src/ol/feature.js

@@ -8,7 +8,6 @@ goog.require('goog.events.Event');
 goog.require('goog.events.EventType');
 goog.require('ol.Object');
 goog.require('ol.geom.Geometry');
-goog.require('ol.geom.GeometryEvent');
 
 
 
@@ -28,6 +27,12 @@ goog.require('ol.geom.GeometryEvent');
  */
 ol.Feature = function(opt_values) {
 
+  /**
+   * @type {ol.Extent}
+   * @private
+   */
+  this.geometryExtent_ = null;
+
   goog.base(this, opt_values);
 
   /**
@@ -118,12 +123,14 @@ ol.Feature.prototype.getSymbolizers = function() {
 
 /**
  * Listener for geometry change events.
- * @param {ol.geom.GeometryEvent} evt Geometry event.
+ * @param {goog.events.Event} evt Change event.
  * @private
  */
 ol.Feature.prototype.handleGeometryChange_ = function(evt) {
+  var oldExtent = this.geometryExtent_;
+  this.geometryExtent_ = this.getGeometry().getBounds();
   this.dispatchEvent(new ol.FeatureEvent(
-      ol.FeatureEventType.CHANGE, this, evt.oldExtent));
+      ol.FeatureEventType.CHANGE, this, oldExtent));
 };
 
 
@@ -135,10 +142,10 @@ ol.Feature.prototype.handleGeometryChange_ = function(evt) {
  */
 ol.Feature.prototype.set = function(key, value) {
   var geometry = this.getGeometry();
-  var oldExtent = null;
+  var oldExtent = this.geometryExtent_;
   if (goog.isDefAndNotNull(geometry)) {
-    oldExtent = geometry.getBounds();
     if (key === this.geometryName_) {
+      this.geometryExtent_ = null;
       goog.events.unlisten(geometry, goog.events.EventType.CHANGE,
           this.handleGeometryChange_, false, this);
     }
@@ -148,6 +155,7 @@ ol.Feature.prototype.set = function(key, value) {
       this.geometryName_ = key;
     }
     if (key === this.geometryName_) {
+      this.geometryExtent_ = value.getBounds();
       goog.events.listen(value, goog.events.EventType.CHANGE,
           this.handleGeometryChange_, false, this);
     }

src/ol/geom/abstractcollection.js

@@ -1,9 +1,7 @@
 goog.provide('ol.geom.AbstractCollection');
 
-goog.require('goog.events.EventType');
 goog.require('ol.extent');
 goog.require('ol.geom.Geometry');
-goog.require('ol.geom.GeometryEvent');
 
 
 
@@ -77,21 +75,12 @@ ol.geom.AbstractCollection.prototype.getType = goog.abstractMethod;
 
 /**
  * Listener for component change events.
- * @param {ol.geom.GeometryEvent} evt Geometry event.
+ * @param {goog.events.Event} evt Change event.
  * @protected
  */
 ol.geom.AbstractCollection.prototype.handleComponentChange = function(evt) {
   this.bounds = null;
-  var oldExtent = ol.extent.createEmpty();
-  var components = this.components;
-  for (var i = components.length - 1; i >= 0; --i) {
-    var component = components[i];
-    ol.extent.extend(oldExtent,
-        component === evt.target && !goog.isNull(evt.oldExtent) ?
-            evt.oldExtent : component.getBounds());
-  }
-  this.dispatchEvent(new ol.geom.GeometryEvent(goog.events.EventType.CHANGE,
-      this, oldExtent));
+  this.dispatchChangeEvent();
 };
 
 

src/ol/geom/geometry.js

@@ -1,8 +1,7 @@
 goog.provide('ol.geom.Geometry');
-goog.provide('ol.geom.GeometryEvent');
 goog.provide('ol.geom.GeometryType');
 
-goog.require('goog.events.Event');
+goog.require('goog.events.EventType');
 goog.require('goog.object');
 goog.require('ol.Extent');
 goog.require('ol.Observable');
@@ -75,18 +74,9 @@ ol.geom.Geometry.prototype.getType = goog.abstractMethod;
 ol.geom.Geometry.prototype.transform = goog.abstractMethod;
 
 
-
 /**
- * Constructor for geometry events.
- * @constructor
- * @extends {goog.events.Event}
- * @param {string} type Event type.
- * @param {ol.geom.Geometry} target The target geometry.
- * @param {ol.Extent} oldExtent The previous geometry extent.
+ * Dispatch a generic event with type "change."
  */
-ol.geom.GeometryEvent = function(type, target, oldExtent) {
-  goog.base(this, type, target);
-
-  this.oldExtent = oldExtent;
+ol.geom.Geometry.prototype.dispatchChangeEvent = function() {
+  this.dispatchEvent(goog.events.EventType.CHANGE);
 };
-goog.inherits(ol.geom.GeometryEvent, goog.events.Event);

src/ol/geom/linestring.js

@@ -1,12 +1,10 @@
 goog.provide('ol.geom.LineString');
 
 goog.require('goog.asserts');
-goog.require('goog.events.EventType');
 goog.require('ol.CoordinateArray');
 goog.require('ol.coordinate');
 goog.require('ol.extent');
 goog.require('ol.geom.Geometry');
-goog.require('ol.geom.GeometryEvent');
 goog.require('ol.geom.GeometryType');
 
 
@@ -116,11 +114,9 @@ ol.geom.LineString.prototype.distanceFromCoordinate = function(coordinate) {
  * @param {ol.CoordinateArray} coordinates Coordinates array.
  */
 ol.geom.LineString.prototype.setCoordinates = function(coordinates) {
-  var oldBounds = this.bounds_;
   this.bounds_ = null;
   this.coordinates_ = coordinates;
-  this.dispatchEvent(new ol.geom.GeometryEvent(goog.events.EventType.CHANGE,
-      this, oldBounds));
+  this.dispatchChangeEvent();
 };
 
 
@@ -134,5 +130,5 @@ ol.geom.LineString.prototype.transform = function(transform) {
     coord = coordinates[i];
     transform(coord, coord, coord.length);
   }
-  this.setCoordinates(coordinates); // for change event
+  this.setCoordinates(coordinates); // for invalidating bounds
 };

src/ol/geom/point.js

@@ -1,10 +1,8 @@
 goog.provide('ol.geom.Point');
 
 goog.require('goog.asserts');
-goog.require('goog.events.EventType');
 goog.require('ol.Coordinate');
 goog.require('ol.geom.Geometry');
-goog.require('ol.geom.GeometryEvent');
 goog.require('ol.geom.GeometryType');
 
 
@@ -79,11 +77,9 @@ ol.geom.Point.prototype.getType = function() {
  * @param {ol.Coordinate} coordinates Coordinates array.
  */
 ol.geom.Point.prototype.setCoordinates = function(coordinates) {
-  var oldBounds = this.bounds_;
   this.bounds_ = null;
   this.coordinates_ = coordinates;
-  this.dispatchEvent(new ol.geom.GeometryEvent(goog.events.EventType.CHANGE,
-      this, oldBounds));
+  this.dispatchChangeEvent();
 };
 
 
@@ -93,5 +89,5 @@ ol.geom.Point.prototype.setCoordinates = function(coordinates) {
 ol.geom.Point.prototype.transform = function(transform) {
   var coordinates = this.getCoordinates();
   transform(coordinates, coordinates, coordinates.length);
-  this.setCoordinates(coordinates); // for change event
+  this.setCoordinates(coordinates); // for invalidating bounds
 };

src/ol/geom/polygon.js

@@ -6,7 +6,6 @@ goog.require('goog.events.EventType');
 goog.require('ol.CoordinateArray');
 goog.require('ol.extent');
 goog.require('ol.geom.Geometry');
-goog.require('ol.geom.GeometryEvent');
 goog.require('ol.geom.GeometryType');
 goog.require('ol.geom.LinearRing');
 
@@ -108,19 +107,11 @@ ol.geom.Polygon.prototype.getRings = function() {
 
 /**
  * Listener for ring change events.
- * @param {ol.geom.GeometryEvent} evt Geometry event.
+ * @param {goog.events.Event} evt Change event.
  * @private
  */
 ol.geom.Polygon.prototype.handleRingChange_ = function(evt) {
-  var ring = evt.target;
-  var oldExtent = null;
-  if (ring === this.rings_[0]) {
-    oldExtent = evt.oldExtent;
-  } else {
-    oldExtent = this.getBounds();
-  }
-  this.dispatchEvent(new ol.geom.GeometryEvent(goog.events.EventType.CHANGE,
-      this, oldExtent));
+  this.dispatchChangeEvent();
 };