diff --git a/src/ol/geom/abstractcollection.js b/src/ol/geom/abstractcollection.js
index 590b3cd15a..e26dddb1d0 100644
--- a/src/ol/geom/abstractcollection.js
+++ b/src/ol/geom/abstractcollection.js
@@ -1,7 +1,9 @@
 goog.provide('ol.geom.AbstractCollection');
 
+goog.require('goog.events.EventType');
 goog.require('ol.extent');
 goog.require('ol.geom.Geometry');
+goog.require('ol.geom.GeometryEvent');
 
 
 
@@ -16,6 +18,7 @@ ol.geom.AbstractCollection = function() {
 
   /**
    * @type {Array.<ol.geom.Geometry>}
+   * @protected
    */
   this.components = null;
 
@@ -45,6 +48,14 @@ ol.geom.AbstractCollection.prototype.getBounds = function() {
 };
 
 
+/**
+ * @return {Array.<ol.geom.Geometry>} Components.
+ */
+ol.geom.AbstractCollection.prototype.getComponents = function() {
+  return this.components;
+};
+
+
 /**
  * @inheritDoc
  */
@@ -64,6 +75,26 @@ ol.geom.AbstractCollection.prototype.getCoordinates = function() {
 ol.geom.AbstractCollection.prototype.getType = goog.abstractMethod;
 
 
+/**
+ * Listener for ring change events.
+ * @param {ol.geom.GeometryEvent} evt Geometry 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));
+};
+
+
 /**
  * @inheritDoc
  */
diff --git a/src/ol/geom/geometrycollection.js b/src/ol/geom/geometrycollection.js
index 4cdee57aed..9a1d994a29 100644
--- a/src/ol/geom/geometrycollection.js
+++ b/src/ol/geom/geometrycollection.js
@@ -1,6 +1,8 @@
 goog.provide('ol.geom.GeometryCollection');
 
 goog.require('goog.asserts');
+goog.require('goog.events');
+goog.require('goog.events.EventType');
 goog.require('ol.geom.AbstractCollection');
 goog.require('ol.geom.Geometry');
 goog.require('ol.geom.GeometryType');
@@ -18,8 +20,14 @@ goog.require('ol.geom.GeometryType');
 ol.geom.GeometryCollection = function(geometries) {
   goog.base(this);
 
+  for (var i = geometries.length - 1; i >= 0; --i) {
+    goog.events.listen(geometries[i], goog.events.EventType.CHANGE,
+        this.handleComponentChange, false, this);
+  }
+
   /**
    * @type {Array.<ol.geom.Geometry>}
+   * @protected
    */
   this.components = geometries;
 
@@ -27,6 +35,19 @@ ol.geom.GeometryCollection = function(geometries) {
 goog.inherits(ol.geom.GeometryCollection, ol.geom.AbstractCollection);
 
 
+/**
+ * @inheritDoc
+ */
+ol.geom.GeometryCollection.prototype.clone = function() {
+  var numComponents = this.components.length;
+  var components = new Array(numComponents);
+  for (var i = 0; i < numComponents; ++i) {
+    components[i] = this.components[i];
+  }
+  return new ol.geom.GeometryCollection(components);
+};
+
+
 /**
  * @inheritDoc
  */
diff --git a/src/ol/geom/multilinestring.js b/src/ol/geom/multilinestring.js
index 756f1fb0cf..f86669e5d9 100644
--- a/src/ol/geom/multilinestring.js
+++ b/src/ol/geom/multilinestring.js
@@ -1,6 +1,8 @@
 goog.provide('ol.geom.MultiLineString');
 
 goog.require('goog.asserts');
+goog.require('goog.events');
+goog.require('goog.events.EventType');
 goog.require('ol.CoordinateArray');
 goog.require('ol.geom.AbstractCollection');
 goog.require('ol.geom.GeometryType');
@@ -21,10 +23,14 @@ ol.geom.MultiLineString = function(coordinates) {
 
   /**
    * @type {Array.<ol.geom.LineString>}
+   * @protected
    */
   this.components = new Array(numParts);
   for (var i = 0; i < numParts; ++i) {
-    this.components[i] = new ol.geom.LineString(coordinates[i]);
+    var component = new ol.geom.LineString(coordinates[i]);
+    this.components[i] = component;
+    goog.events.listen(component, goog.events.EventType.CHANGE,
+        this.handleComponentChange, false, this);
   }
 
 };
diff --git a/src/ol/geom/multipoint.js b/src/ol/geom/multipoint.js
index fe8f75d971..4f588b69c3 100644
--- a/src/ol/geom/multipoint.js
+++ b/src/ol/geom/multipoint.js
@@ -1,6 +1,8 @@
 goog.provide('ol.geom.MultiPoint');
 
 goog.require('goog.asserts');
+goog.require('goog.events');
+goog.require('goog.events.EventType');
 goog.require('ol.CoordinateArray');
 goog.require('ol.geom.AbstractCollection');
 goog.require('ol.geom.GeometryType');
@@ -21,10 +23,14 @@ ol.geom.MultiPoint = function(coordinates) {
 
   /**
    * @type {Array.<ol.geom.Point>}
+   * @protected
    */
   this.components = new Array(numParts);
   for (var i = 0; i < numParts; ++i) {
-    this.components[i] = new ol.geom.Point(coordinates[i]);
+    var component = new ol.geom.Point(coordinates[i]);
+    this.components[i] = component;
+    goog.events.listen(component, goog.events.EventType.CHANGE,
+        this.handleComponentChange, false, this);
   }
 
 };
diff --git a/src/ol/geom/multipolygon.js b/src/ol/geom/multipolygon.js
index 45c5e20cf4..3982081074 100644
--- a/src/ol/geom/multipolygon.js
+++ b/src/ol/geom/multipolygon.js
@@ -1,6 +1,8 @@
 goog.provide('ol.geom.MultiPolygon');
 
 goog.require('goog.asserts');
+goog.require('goog.events');
+goog.require('goog.events.EventType');
 goog.require('ol.CoordinateArray');
 goog.require('ol.geom.AbstractCollection');
 goog.require('ol.geom.GeometryType');
@@ -22,10 +24,14 @@ ol.geom.MultiPolygon = function(coordinates) {
 
   /**
    * @type {Array.<ol.geom.Polygon>}
+   * @protected
    */
   this.components = new Array(numParts);
   for (var i = 0; i < numParts; ++i) {
-    this.components[i] = new ol.geom.Polygon(coordinates[i]);
+    var component = new ol.geom.Polygon(coordinates[i]);
+    this.components[i] = component;
+    goog.events.listen(component, goog.events.EventType.CHANGE,
+        this.handleComponentChange, false, this);
   }
 
 };
diff --git a/src/ol/parser/geojsonparser.js b/src/ol/parser/geojsonparser.js
index 7e448188e3..3429b3456d 100644
--- a/src/ol/parser/geojsonparser.js
+++ b/src/ol/parser/geojsonparser.js
@@ -315,8 +315,9 @@ ol.parser.GeoJSON.prototype.encodeGeometry_ = function(geometry) {
  */
 ol.parser.GeoJSON.prototype.encodeGeometryCollection_ = function(collection) {
   var geometries = [];
-  for (var i = 0, ii = collection.components.length; i < ii; ++i) {
-    geometries.push(this.encodeGeometry_(collection.components[i]));
+  var components = collection.getComponents();
+  for (var i = 0, ii = components.length; i < ii; ++i) {
+    geometries.push(this.encodeGeometry_(components[i]));
   }
   return /** @type {GeoJSONGeometryCollection} */({
     type: 'GeometryCollection',
diff --git a/src/ol/parser/gpxparser.js b/src/ol/parser/gpxparser.js
index 18cc711e05..55c17fbaa8 100644
--- a/src/ol/parser/gpxparser.js
+++ b/src/ol/parser/gpxparser.js
@@ -159,8 +159,9 @@ ol.parser.GPX = function(opt_options) {
         if (geom instanceof ol.geom.LineString) {
           this.writeNode('trkseg', feature.getGeometry(), undefined, node);
         } else if (geom instanceof ol.geom.MultiLineString) {
-          for (i = 0, ii = geom.components.length; i < ii; ++i) {
-            this.writeNode('trkseg', geom.components[i], undefined, node);
+          var components = geom.getComponents();
+          for (i = 0, ii = components.length; i < ii; ++i) {
+            this.writeNode('trkseg', components[i], undefined, node);
           }
         } else if (geom instanceof ol.geom.Polygon) {
           rings = geom.getRings();
diff --git a/src/ol/parser/kmlparser.js b/src/ol/parser/kmlparser.js
index cc9fdbbf1a..6fdb95bac9 100644
--- a/src/ol/parser/kmlparser.js
+++ b/src/ol/parser/kmlparser.js
@@ -823,8 +823,9 @@ ol.parser.KML = function(opt_options) {
       },
       'MultiGeometry': function(geometry) {
         var node = this.createElementNS('MultiGeometry');
-        for (var i = 0, ii = geometry.components.length; i < ii; ++i) {
-          this.writeNode('_geometry', geometry.components[i], null, node);
+        var components = geometry.getComponents();
+        for (var i = 0, ii = components.length; i < ii; ++i) {
+          this.writeNode('_geometry', components[i], null, node);
         }
         return node;
       },
diff --git a/src/ol/parser/ogc/gmlparser.js b/src/ol/parser/ogc/gmlparser.js
index 250e845714..2ebf3d4020 100644
--- a/src/ol/parser/ogc/gmlparser.js
+++ b/src/ol/parser/ogc/gmlparser.js
@@ -340,8 +340,9 @@ ol.parser.ogc.GML = function(opt_options) {
       },
       'MultiPoint': function(geometry) {
         var node = this.createElementNS('gml:MultiPoint');
-        for (var i = 0, ii = geometry.components.length; i < ii; ++i) {
-          this.writeNode('pointMember', geometry.components[i], null, node);
+        var components = geometry.getComponents();
+        for (var i = 0, ii = components.length; i < ii; ++i) {
+          this.writeNode('pointMember', components[i], null, node);
         }
         return node;
       },
@@ -352,9 +353,9 @@ ol.parser.ogc.GML = function(opt_options) {
       },
       'MultiLineString': function(geometry) {
         var node = this.createElementNS('gml:MultiLineString');
-        for (var i = 0, ii = geometry.components.length; i < ii; ++i) {
-          this.writeNode('lineStringMember', geometry.components[i], null,
-              node);
+        var components = geometry.getComponents();
+        for (var i = 0, ii = components.length; i < ii; ++i) {
+          this.writeNode('lineStringMember', components[i], null, node);
         }
         return node;
       },
@@ -365,8 +366,9 @@ ol.parser.ogc.GML = function(opt_options) {
       },
       'MultiPolygon': function(geometry) {
         var node = this.createElementNS('gml:MultiPolygon');
-        for (var i = 0, ii = geometry.components.length; i < ii; ++i) {
-          this.writeNode('polygonMember', geometry.components[i], null, node);
+        var components = geometry.getComponents();
+        for (var i = 0, ii = components.length; i < ii; ++i) {
+          this.writeNode('polygonMember', components[i], null, node);
         }
         return node;
       },
@@ -377,8 +379,9 @@ ol.parser.ogc.GML = function(opt_options) {
       },
       'GeometryCollection': function(geometry) {
         var node = this.createElementNS('gml:GeometryCollection');
-        for (var i = 0, ii = geometry.components.length; i < ii; ++i) {
-          this.writeNode('geometryMember', geometry.components[i], null, node);
+        var components = geometry.getComponents();
+        for (var i = 0, ii = components.length; i < ii; ++i) {
+          this.writeNode('geometryMember', components[i], null, node);
         }
         return node;
       },
diff --git a/src/ol/parser/ogc/gmlparser_v3.js b/src/ol/parser/ogc/gmlparser_v3.js
index 6b8478775d..0812d1c9ac 100644
--- a/src/ol/parser/ogc/gmlparser_v3.js
+++ b/src/ol/parser/ogc/gmlparser_v3.js
@@ -349,8 +349,9 @@ ol.parser.ogc.GML_v3 = function(opt_options) {
     },
     'MultiCurve': function(geometry) {
       var node = this.createElementNS('gml:MultiCurve');
-      for (var i = 0, len = geometry.components.length; i < len; ++i) {
-        this.writeNode('curveMember', geometry.components[i], null, node);
+      var components = geometry.getComponents();
+      for (var i = 0, len = components.length; i < len; ++i) {
+        this.writeNode('curveMember', components[i], null, node);
       }
       return node;
     },
@@ -365,8 +366,9 @@ ol.parser.ogc.GML_v3 = function(opt_options) {
     },
     'MultiSurface': function(geometry) {
       var node = this.createElementNS('gml:MultiSurface');
-      for (var i = 0, len = geometry.components.length; i < len; ++i) {
-        this.writeNode('surfaceMember', geometry.components[i], null, node);
+      var components = geometry.getComponents();
+      for (var i = 0, len = components.length; i < len; ++i) {
+        this.writeNode('surfaceMember', components[i], null, node);
       }
       return node;
     },
diff --git a/src/ol/parser/wktparser.js b/src/ol/parser/wktparser.js
index c41e2d82c3..350ce4cda5 100644
--- a/src/ol/parser/wktparser.js
+++ b/src/ol/parser/wktparser.js
@@ -171,8 +171,9 @@ ol.parser.WKT.prototype.encodePoint_ = function(geom) {
  */
 ol.parser.WKT.prototype.encodeMultiPoint_ = function(geom) {
   var array = [];
-  for (var i = 0, ii = geom.components.length; i < ii; ++i) {
-    array.push('(' + this.encodePoint_.apply(this, [geom.components[i]]) + ')');
+  var components = geom.getComponents();
+  for (var i = 0, ii = components.length; i < ii; ++i) {
+    array.push('(' + this.encodePoint_.apply(this, [components[i]]) + ')');
   }
   return array.join(',');
 };
@@ -185,8 +186,9 @@ ol.parser.WKT.prototype.encodeMultiPoint_ = function(geom) {
  */
 ol.parser.WKT.prototype.encodeGeometryCollection_ = function(geom) {
   var array = [];
-  for (var i = 0, ii = geom.components.length; i < ii; ++i) {
-    array.push(this.encode_.apply(this, [geom.components[i]]));
+  var components = geom.getComponents();
+  for (var i = 0, ii = components.length; i < ii; ++i) {
+    array.push(this.encode_.apply(this, [components[i]]));
   }
   return array.join(',');
 };
@@ -214,9 +216,10 @@ ol.parser.WKT.prototype.encodeLineString_ = function(geom) {
  */
 ol.parser.WKT.prototype.encodeMultiLineString_ = function(geom) {
   var array = [];
-  for (var i = 0, ii = geom.components.length; i < ii; ++i) {
+  var components = geom.getComponents();
+  for (var i = 0, ii = components.length; i < ii; ++i) {
     array.push('(' + this.encodeLineString_.apply(this,
-        [geom.components[i]]) + ')');
+        [components[i]]) + ')');
   }
   return array.join(',');
 };
@@ -245,9 +248,9 @@ ol.parser.WKT.prototype.encodePolygon_ = function(geom) {
  */
 ol.parser.WKT.prototype.encodeMultiPolygon_ = function(geom) {
   var array = [];
-  for (var i = 0, ii = geom.components.length; i < ii; ++i) {
-    array.push('(' + this.encodePolygon_.apply(this,
-        [geom.components[i]]) + ')');
+  var components = geom.getComponents();
+  for (var i = 0, ii = components.length; i < ii; ++i) {
+    array.push('(' + this.encodePolygon_.apply(this, [components[i]]) + ')');
   }
   return array.join(',');
 };
diff --git a/src/ol/renderer/canvas/canvasvectorrenderer.js b/src/ol/renderer/canvas/canvasvectorrenderer.js
index 3be9e21e9a..409d95d534 100644
--- a/src/ol/renderer/canvas/canvasvectorrenderer.js
+++ b/src/ol/renderer/canvas/canvasvectorrenderer.js
@@ -172,7 +172,7 @@ ol.renderer.canvas.Vector.prototype.renderLineStringFeatures_ =
     } else {
       goog.asserts.assert(geometry instanceof ol.geom.MultiLineString,
           'Expected MultiLineString');
-      components = geometry.components;
+      components = geometry.getComponents();
     }
     for (j = 0, jj = components.length; j < jj; ++j) {
       line = components[j];
@@ -256,7 +256,7 @@ ol.renderer.canvas.Vector.prototype.renderPointFeatures_ =
     } else {
       goog.asserts.assert(geometry instanceof ol.geom.MultiPoint,
           'Expected MultiPoint');
-      components = geometry.components;
+      components = geometry.getComponents();
     }
     for (j = 0, jj = components.length; j < jj; ++j) {
       point = components[j];
@@ -358,7 +358,7 @@ ol.renderer.canvas.Vector.prototype.renderPolygonFeatures_ =
     } else {
       goog.asserts.assert(geometry instanceof ol.geom.MultiPolygon,
           'Expected MultiPolygon');
-      components = geometry.components;
+      components = geometry.getComponents();
     }
     for (j = 0, jj = components.length; j < jj; ++j) {
       poly = components[j];
@@ -472,7 +472,7 @@ ol.renderer.canvas.Vector.renderCircle_ = function(circle) {
  */
 ol.renderer.canvas.Vector.getLabelVectors = function(geometry) {
   if (geometry instanceof ol.geom.AbstractCollection) {
-    var components = geometry.components;
+    var components = geometry.getComponents();
     var numComponents = components.length;
     var result = [];
     for (var i = 0; i < numComponents; ++i) {
diff --git a/test/spec/ol/geom/geometrycollection.test.js b/test/spec/ol/geom/geometrycollection.test.js
index 010e5b2b5e..cf122ddb09 100644
--- a/test/spec/ol/geom/geometrycollection.test.js
+++ b/test/spec/ol/geom/geometrycollection.test.js
@@ -28,10 +28,11 @@ describe('ol.geom.GeometryCollection', function() {
       var poly = new ol.geom.Polygon([outer, inner1, inner2]);
       var multi = new ol.geom.GeometryCollection([point, line, poly]);
 
-      expect(multi.components.length).to.be(3);
-      expect(multi.components[0]).to.be.a(ol.geom.Point);
-      expect(multi.components[1]).to.be.a(ol.geom.LineString);
-      expect(multi.components[2]).to.be.a(ol.geom.Polygon);
+      var components = multi.getComponents();
+      expect(components.length).to.be(3);
+      expect(components[0]).to.be.a(ol.geom.Point);
+      expect(components[1]).to.be.a(ol.geom.LineString);
+      expect(components[2]).to.be.a(ol.geom.Polygon);
     });
 
   });
@@ -45,10 +46,10 @@ describe('ol.geom.GeometryCollection', function() {
       var multi = new ol.geom.GeometryCollection([point, line, poly]);
       var clone = multi.clone();
       expect(clone).to.not.be(multi);
-      var components = clone.components;
-      expect(components[0]).to.eql([10, 20]);
-      expect(components[1]).to.eql([[10, 20], [30, 40]]);
-      expect(components[2]).to.eql([outer, inner1, inner2]);
+      var components = clone.getComponents();
+      expect(components[0].getCoordinates()).to.eql([10, 20]);
+      expect(components[1].getCoordinates()).to.eql([[10, 20], [30, 40]]);
+      expect(components[2].getCoordinates()).to.eql([outer, inner1, inner2]);
     });
 
   });
diff --git a/test/spec/ol/geom/multilinestring.test.js b/test/spec/ol/geom/multilinestring.test.js
index b619813149..946ce304a8 100644
--- a/test/spec/ol/geom/multilinestring.test.js
+++ b/test/spec/ol/geom/multilinestring.test.js
@@ -21,9 +21,10 @@ describe('ol.geom.MultiLineString', function() {
         [[10, 20], [30, 40]],
         [[20, 30], [40, 50]]]);
 
-      expect(multi.components.length).to.be(2);
-      expect(multi.components[0]).to.be.a(ol.geom.LineString);
-      expect(multi.components[1]).to.be.a(ol.geom.LineString);
+      var components = multi.getComponents();
+      expect(components.length).to.be(2);
+      expect(components[0]).to.be.a(ol.geom.LineString);
+      expect(components[1]).to.be.a(ol.geom.LineString);
 
     });
 
diff --git a/test/spec/ol/geom/multipoint.test.js b/test/spec/ol/geom/multipoint.test.js
index 772186250b..b8dd053958 100644
--- a/test/spec/ol/geom/multipoint.test.js
+++ b/test/spec/ol/geom/multipoint.test.js
@@ -17,9 +17,10 @@ describe('ol.geom.MultiPoint', function() {
     it('is an array of points', function() {
       var multi = new ol.geom.MultiPoint([[10, 20], [30, 40]]);
 
-      expect(multi.components.length).to.be(2);
-      expect(multi.components[0]).to.be.a(ol.geom.Point);
-      expect(multi.components[1]).to.be.a(ol.geom.Point);
+      var components = multi.getComponents();
+      expect(components.length).to.be(2);
+      expect(components[0]).to.be.a(ol.geom.Point);
+      expect(components[1]).to.be.a(ol.geom.Point);
 
     });
 
@@ -56,10 +57,11 @@ describe('ol.geom.MultiPoint', function() {
       var multi = new ol.geom.MultiPoint([[10, 20], [30, 40]]);
       multi.transform(forward);
 
-      expect(multi.components[0].get(0)).to.roughlyEqual(1113195, 1);
-      expect(multi.components[0].get(1)).to.roughlyEqual(2273031, 1);
-      expect(multi.components[1].get(0)).to.roughlyEqual(3339584, 1);
-      expect(multi.components[1].get(1)).to.roughlyEqual(4865942, 1);
+      var components = multi.getComponents();
+      expect(components[0].get(0)).to.roughlyEqual(1113195, 1);
+      expect(components[0].get(1)).to.roughlyEqual(2273031, 1);
+      expect(components[1].get(0)).to.roughlyEqual(3339584, 1);
+      expect(components[1].get(1)).to.roughlyEqual(4865942, 1);
     });
 
     it('inverse transforms a multi-point', function() {
@@ -67,10 +69,11 @@ describe('ol.geom.MultiPoint', function() {
           [[1113195, 2273031], [3339584, 4865942]]);
       multi.transform(inverse);
 
-      expect(multi.components[0].get(0)).to.roughlyEqual(10, 0.001);
-      expect(multi.components[0].get(1)).to.roughlyEqual(20, 0.001);
-      expect(multi.components[1].get(0)).to.roughlyEqual(30, 0.001);
-      expect(multi.components[1].get(1)).to.roughlyEqual(40, 0.001);
+      var components = multi.getComponents();
+      expect(components[0].get(0)).to.roughlyEqual(10, 0.001);
+      expect(components[0].get(1)).to.roughlyEqual(20, 0.001);
+      expect(components[1].get(0)).to.roughlyEqual(30, 0.001);
+      expect(components[1].get(1)).to.roughlyEqual(40, 0.001);
     });
 
   });
diff --git a/test/spec/ol/geom/multipolygon.test.js b/test/spec/ol/geom/multipolygon.test.js
index e667427d0b..1f7976c1c7 100644
--- a/test/spec/ol/geom/multipolygon.test.js
+++ b/test/spec/ol/geom/multipolygon.test.js
@@ -33,9 +33,10 @@ describe('ol.geom.MultiPolygon', function() {
         [outer1, inner1a, inner1b],
         [outer2]]);
 
-      expect(multi.components.length).to.be(2);
-      expect(multi.components[0]).to.be.a(ol.geom.Polygon);
-      expect(multi.components[1]).to.be.a(ol.geom.Polygon);
+      var components = multi.getComponents();
+      expect(components.length).to.be(2);
+      expect(components[0]).to.be.a(ol.geom.Polygon);
+      expect(components[1]).to.be.a(ol.geom.Polygon);
 
     });
 
@@ -69,9 +70,53 @@ describe('ol.geom.MultiPolygon', function() {
 
   });
 
+  describe('change event', function() {
+
+    var outer, inner;
+    beforeEach(function() {
+      outer = [[0, 0], [10, 0], [10, 10], [0, 10], [0, 0]];
+      inner = [[2, 2], [2, 8], [8, 8], [8, 2], [2, 2]];
+    });
+
+    it('is fired when outer ring is modified', function(done) {
+      var multi = new ol.geom.MultiPolygon([[outer, inner], [outer, inner]]);
+      var components = multi.getComponents();
+      var bounds = multi.getBounds();
+      goog.events.listen(multi, 'change', function(evt) {
+        expect(evt.target).to.be(multi);
+        expect(evt.oldExtent).to.eql(bounds);
+        expect(evt.target.getBounds()).to.eql([0, 0, 11, 10]);
+        done();
+      });
+
+      var outerOne = components[0].getRings()[0];
+      var outerCoords = outerOne.getCoordinates();
+      outerCoords[1][0] = 11;
+      outerOne.setCoordinates(outerCoords);
+    });
+
+    it('is fired when inner ring is modified', function(done) {
+      var multi = new ol.geom.MultiPolygon([[outer, inner], [outer, inner]]);
+      var components = multi.getComponents();
+      var bounds = multi.getBounds();
+      goog.events.listen(multi, 'change', function(evt) {
+        expect(evt.target).to.be(multi);
+        expect(evt.oldExtent).to.eql(bounds);
+        expect(evt.target.getBounds()).to.eql([0, 0, 10, 10]);
+        done();
+      });
+
+      var innerTwo = components[1].getRings()[1];
+      var innerCoords = innerTwo.getCoordinates();
+      innerCoords[1][0] = 3;
+      innerTwo.setCoordinates(innerCoords);
+    });
+
+  });
 
 });
 
+goog.require('goog.events');
 goog.require('ol.geom.Geometry');
 goog.require('ol.geom.MultiPolygon');
 goog.require('ol.geom.Polygon');
diff --git a/test/spec/ol/parser/geojson.test.js b/test/spec/ol/parser/geojson.test.js
index ade32cbbbd..f986c02356 100644
--- a/test/spec/ol/parser/geojson.test.js
+++ b/test/spec/ol/parser/geojson.test.js
@@ -101,10 +101,10 @@ describe('ol.parser.GeoJSON', function() {
       ]);
       var geojson = parser.write(collection);
       var got = parser.read(geojson);
-      expect(collection.components.length).to.equal(got.length);
-      for (var i = 0, ii = collection.components.length; i < ii; ++i) {
-        expect(collection.components[i].getCoordinates()).to.eql(
-            got[i].getCoordinates());
+      var components = collection.getComponents();
+      expect(components.length).to.equal(got.length);
+      for (var i = 0, ii = components.length; i < ii; ++i) {
+        expect(components[i].getCoordinates()).to.eql(got[i].getCoordinates());
       }
     });
 
diff --git a/test/spec/ol/parser/kml.test.js b/test/spec/ol/parser/kml.test.js
index 6b8e1dedd6..4fb7774edc 100644
--- a/test/spec/ol/parser/kml.test.js
+++ b/test/spec/ol/parser/kml.test.js
@@ -118,10 +118,11 @@ describe('ol.parser.KML', function() {
       afterLoadXml(url, function(xml) {
         var obj = parser.read(xml);
         var geom = obj.features[0].getGeometry();
+        var components = geom.getComponents();
         expect(geom instanceof ol.geom.GeometryCollection).to.be.ok();
-        expect(geom.components.length).to.eql(2);
-        expect(geom.components[0] instanceof ol.geom.LineString).to.be.ok();
-        expect(geom.components[1] instanceof ol.geom.Point).to.be.ok();
+        expect(components.length).to.eql(2);
+        expect(components[0] instanceof ol.geom.LineString).to.be.ok();
+        expect(components[1] instanceof ol.geom.Point).to.be.ok();
         done();
       });
     });
@@ -346,9 +347,10 @@ describe('ol.parser.KML', function() {
       expect(alaska).to.be.a(ol.Feature);
       var geometry = alaska.getGeometry();
       expect(geometry).to.be.a(ol.geom.GeometryCollection);
-      expect(geometry.components).to.have.length(2);
-      expect(geometry.components[0]).to.be.a(ol.geom.Point);
-      expect(geometry.components[1]).to.be.a(ol.geom.MultiPolygon);
+      var components = geometry.getComponents();
+      expect(components).to.have.length(2);
+      expect(components[0]).to.be.a(ol.geom.Point);
+      expect(components[1]).to.be.a(ol.geom.MultiPolygon);
     });
 
   });
diff --git a/test/spec/ol/parser/wkt.test.js b/test/spec/ol/parser/wkt.test.js
index 697e3ffa58..059154c285 100644
--- a/test/spec/ol/parser/wkt.test.js
+++ b/test/spec/ol/parser/wkt.test.js
@@ -19,20 +19,22 @@ describe('ol.parser.WKT', function() {
     // there are two forms to test
     var wkt = 'MULTIPOINT((10 40),(40 30),(20 20),(30 10))';
     var geom = parser.read(wkt);
-    expect(geom.components.length).to.eql(4);
-    expect(geom.components[0].getCoordinates()).to.eql([10, 40]);
-    expect(geom.components[1].getCoordinates()).to.eql([40, 30]);
-    expect(geom.components[2].getCoordinates()).to.eql([20, 20]);
-    expect(geom.components[3].getCoordinates()).to.eql([30, 10]);
+    var components = geom.getComponents();
+    expect(components.length).to.eql(4);
+    expect(components[0].getCoordinates()).to.eql([10, 40]);
+    expect(components[1].getCoordinates()).to.eql([40, 30]);
+    expect(components[2].getCoordinates()).to.eql([20, 20]);
+    expect(components[3].getCoordinates()).to.eql([30, 10]);
     expect(parser.write(geom)).to.eql(wkt);
     // this has whitespace
     wkt = 'MULTIPOINT (10 40, 40 30, 20 20, 30 10)';
     geom = parser.read(wkt);
-    expect(geom.components.length).to.eql(4);
-    expect(geom.components[0].getCoordinates()).to.eql([10, 40]);
-    expect(geom.components[1].getCoordinates()).to.eql([40, 30]);
-    expect(geom.components[2].getCoordinates()).to.eql([20, 20]);
-    expect(geom.components[3].getCoordinates()).to.eql([30, 10]);
+    components = geom.getComponents();
+    expect(components.length).to.eql(4);
+    expect(components[0].getCoordinates()).to.eql([10, 40]);
+    expect(components[1].getCoordinates()).to.eql([40, 30]);
+    expect(components[2].getCoordinates()).to.eql([20, 20]);
+    expect(components[3].getCoordinates()).to.eql([30, 10]);
   });
 
   it('LineString read / written correctly', function() {
@@ -53,10 +55,10 @@ describe('ol.parser.WKT', function() {
         '(40 40,30 30,40 20,30 10))';
     var geom = parser.read(wkt);
     expect(geom.getType()).to.eql(ol.geom.GeometryType.MULTILINESTRING);
-    expect(geom.components.length).to.eql(2);
-    expect(geom.components[0].getType()).to.eql(
-        ol.geom.GeometryType.LINESTRING);
-    expect(geom.components[0].getCoordinates()).to.eql(
+    var components = geom.getComponents();
+    expect(components.length).to.eql(2);
+    expect(components[0].getType()).to.eql(ol.geom.GeometryType.LINESTRING);
+    expect(components[0].getCoordinates()).to.eql(
         [[10, 10], [20, 20], [10, 40]]);
     expect(parser.write(geom)).to.eql(wkt);
     // test whitespace when reading
@@ -64,10 +66,11 @@ describe('ol.parser.WKT', function() {
         '(40 40, 30 30, 40 20, 30 10) )';
     geom = parser.read(wkt);
     expect(geom.getType()).to.eql(ol.geom.GeometryType.MULTILINESTRING);
-    expect(geom.components.length).to.eql(2);
-    expect(geom.components[0].getType()).to.eql(
+    components = geom.getComponents();
+    expect(components.length).to.eql(2);
+    expect(components[0].getType()).to.eql(
         ol.geom.GeometryType.LINESTRING);
-    expect(geom.components[0].getCoordinates()).to.eql(
+    expect(components[0].getCoordinates()).to.eql(
         [[10, 10], [20, 20], [10, 40]]);
   });
 
@@ -113,16 +116,17 @@ describe('ol.parser.WKT', function() {
         '((20 35,45 20,30 5,10 10,10 30,20 35),(30 20,20 25,20 15,30 20)))';
     var geom = parser.read(wkt);
     expect(geom.getType()).to.eql(ol.geom.GeometryType.MULTIPOLYGON);
-    expect(geom.components.length).to.eql(2);
-    expect(geom.components[0].getType()).to.eql(ol.geom.GeometryType.POLYGON);
-    expect(geom.components[1].getType()).to.eql(ol.geom.GeometryType.POLYGON);
-    expect(geom.components[0].getRings().length).to.eql(1);
-    expect(geom.components[1].getRings().length).to.eql(2);
-    expect(geom.components[0].getRings()[0].getCoordinates()).to.eql(
+    var components = geom.getComponents();
+    expect(components.length).to.eql(2);
+    expect(components[0].getType()).to.eql(ol.geom.GeometryType.POLYGON);
+    expect(components[1].getType()).to.eql(ol.geom.GeometryType.POLYGON);
+    expect(components[0].getRings().length).to.eql(1);
+    expect(components[1].getRings().length).to.eql(2);
+    expect(components[0].getRings()[0].getCoordinates()).to.eql(
         [[40, 40], [45, 30], [20, 45], [40, 40]]);
-    expect(geom.components[1].getRings()[0].getCoordinates()).to.eql(
+    expect(components[1].getRings()[0].getCoordinates()).to.eql(
         [[20, 35], [45, 20], [30, 5], [10, 10], [10, 30], [20, 35]]);
-    expect(geom.components[1].getRings()[1].getCoordinates()).to.eql(
+    expect(components[1].getRings()[1].getCoordinates()).to.eql(
         [[30, 20], [20, 25], [20, 15], [30, 20]]);
     expect(parser.write(geom)).to.eql(wkt);
 
@@ -132,40 +136,42 @@ describe('ol.parser.WKT', function() {
         '( 30 20,  20 25,20 15  ,30 20 ) ))';
     geom = parser.read(wkt);
     expect(geom.getType()).to.eql(ol.geom.GeometryType.MULTIPOLYGON);
-    expect(geom.components.length).to.eql(2);
-    expect(geom.components[0].getType()).to.eql(ol.geom.GeometryType.POLYGON);
-    expect(geom.components[1].getType()).to.eql(ol.geom.GeometryType.POLYGON);
-    expect(geom.components[0].getRings().length).to.eql(1);
-    expect(geom.components[1].getRings().length).to.eql(2);
-    expect(geom.components[0].getRings()[0].getCoordinates()).to.eql(
+    var components = geom.getComponents();
+    expect(components.length).to.eql(2);
+    expect(components[0].getType()).to.eql(ol.geom.GeometryType.POLYGON);
+    expect(components[1].getType()).to.eql(ol.geom.GeometryType.POLYGON);
+    expect(components[0].getRings().length).to.eql(1);
+    expect(components[1].getRings().length).to.eql(2);
+    expect(components[0].getRings()[0].getCoordinates()).to.eql(
         [[40, 40], [45, 30], [20, 45], [40, 40]]);
-    expect(geom.components[1].getRings()[0].getCoordinates()).to.eql(
+    expect(components[1].getRings()[0].getCoordinates()).to.eql(
         [[20, 35], [45, 20], [30, 5], [10, 10], [10, 30], [20, 35]]);
-    expect(geom.components[1].getRings()[1].getCoordinates()).to.eql(
+    expect(components[1].getRings()[1].getCoordinates()).to.eql(
         [[30, 20], [20, 25], [20, 15], [30, 20]]);
   });
 
   it('GeometryCollection read / written correctly', function() {
     var wkt = 'GEOMETRYCOLLECTION(POINT(4 6),LINESTRING(4 6,7 10))';
     var geom = parser.read(wkt);
-    expect(geom.components.length).to.eql(2);
+    var components = geom.getComponents();
+    expect(components.length).to.eql(2);
     expect(geom.getType()).to.eql(ol.geom.GeometryType.GEOMETRYCOLLECTION);
-    expect(geom.components[0].getType()).to.eql(ol.geom.GeometryType.POINT);
-    expect(geom.components[1].getType()).to.eql(
-        ol.geom.GeometryType.LINESTRING);
-    expect(geom.components[0].getCoordinates()).to.eql([4, 6]);
-    expect(geom.components[1].getCoordinates()).to.eql([[4, 6], [7, 10]]);
+    expect(components[0].getType()).to.eql(ol.geom.GeometryType.POINT);
+    expect(components[1].getType()).to.eql(ol.geom.GeometryType.LINESTRING);
+    expect(components[0].getCoordinates()).to.eql([4, 6]);
+    expect(components[1].getCoordinates()).to.eql([[4, 6], [7, 10]]);
     expect(parser.write(geom)).to.eql(wkt);
     // test whitespace when reading
     wkt = 'GEOMETRYCOLLECTION ( POINT (4 6), LINESTRING (4 6, 7 10) )';
     geom = parser.read(wkt);
-    expect(geom.components.length).to.eql(2);
+    components = geom.getComponents();
+    expect(components.length).to.eql(2);
     expect(geom.getType()).to.eql(ol.geom.GeometryType.GEOMETRYCOLLECTION);
-    expect(geom.components[0].getType()).to.eql(ol.geom.GeometryType.POINT);
-    expect(geom.components[1].getType()).to.eql(
+    expect(components[0].getType()).to.eql(ol.geom.GeometryType.POINT);
+    expect(components[1].getType()).to.eql(
         ol.geom.GeometryType.LINESTRING);
-    expect(geom.components[0].getCoordinates()).to.eql([4, 6]);
-    expect(geom.components[1].getCoordinates()).to.eql([[4, 6], [7, 10]]);
+    expect(components[0].getCoordinates()).to.eql([4, 6]);
+    expect(components[1].getCoordinates()).to.eql([[4, 6], [7, 10]]);
   });
 
 });