diff --git a/src/ol/feature.js b/src/ol/feature.js
index e4200c70d4..63127bb16b 100644
--- a/src/ol/feature.js
+++ b/src/ol/feature.js
@@ -5,16 +5,24 @@ goog.require('goog.events');
goog.require('goog.events.EventType');
goog.require('ol.Object');
goog.require('ol.geom.Geometry');
+goog.require('ol.style.Style');
/**
* @enum {string}
*/
ol.FeatureProperty = {
- GEOMETRY: 'geometry'
+ GEOMETRY: 'geometry',
+ STYLE_FUNCTION: 'styleFunction'
};
+/**
+ * @typedef {function(this: ol.Feature, number): Array.
}
+ */
+ol.FeatureStyleFunction;
+
+
/**
* @constructor
@@ -47,6 +55,9 @@ ol.Feature = function(opt_geometryOrValues) {
goog.events.listen(
this, ol.Object.getChangeEventType(ol.FeatureProperty.GEOMETRY),
this.handleGeometryChanged_, false, this);
+ goog.events.listen(
+ this, ol.Object.getChangeEventType(ol.FeatureProperty.STYLE_FUNCTION),
+ this.handleStyleFunctionChange_, false, this);
if (goog.isDefAndNotNull(opt_geometryOrValues)) {
if (opt_geometryOrValues instanceof ol.geom.Geometry) {
@@ -102,6 +113,19 @@ ol.Feature.prototype.getRevision = function() {
};
+/**
+ * @return {ol.FeatureStyleFunction|undefined} Style function.
+ */
+ol.Feature.prototype.getStyleFunction = function() {
+ return /** @type {ol.FeatureStyleFunction|undefined} */ (
+ this.get(ol.FeatureProperty.STYLE_FUNCTION));
+};
+goog.exportProperty(
+ ol.Feature.prototype,
+ 'getStyleFunction',
+ ol.Feature.prototype.getStyleFunction);
+
+
/**
* @private
*/
@@ -127,6 +151,14 @@ ol.Feature.prototype.handleGeometryChanged_ = function() {
};
+/**
+ * @private
+ */
+ol.Feature.prototype.handleStyleFunctionChange_ = function() {
+ this.dispatchChangeEvent();
+};
+
+
/**
* @param {ol.geom.Geometry|undefined} geometry Geometry.
*/
@@ -139,6 +171,18 @@ goog.exportProperty(
ol.Feature.prototype.setGeometry);
+/**
+ * @param {ol.FeatureStyleFunction|undefined} styleFunction Style function.
+ */
+ol.Feature.prototype.setStyleFunction = function(styleFunction) {
+ this.set(ol.FeatureProperty.STYLE_FUNCTION, styleFunction);
+};
+goog.exportProperty(
+ ol.Feature.prototype,
+ 'setStyleFunction',
+ ol.Feature.prototype.setStyleFunction);
+
+
/**
* @param {number|string|undefined} id Id.
*/
diff --git a/src/ol/layer/vectorlayer.js b/src/ol/layer/vectorlayer.js
index e9a9290119..35e5cd535c 100644
--- a/src/ol/layer/vectorlayer.js
+++ b/src/ol/layer/vectorlayer.js
@@ -35,6 +35,21 @@ ol.layer.Vector = function(opt_options) {
goog.inherits(ol.layer.Vector, ol.layer.Layer);
+/**
+ * @param {ol.Feature} feature Feature.
+ * @param {number} resolution Resolution.
+ * @return {Array.} Styles.
+ */
+ol.layer.Vector.defaultStyleFunction = function(feature, resolution) {
+ var featureStyleFunction = feature.getStyleFunction();
+ if (goog.isDef(featureStyleFunction)) {
+ return featureStyleFunction.call(feature, resolution);
+ } else {
+ return null;
+ }
+};
+
+
/**
* @return {function(ol.geom.Geometry): boolean|undefined} Render geometry
* function.
diff --git a/src/ol/renderer/canvas/canvasvectorlayerrenderer.js b/src/ol/renderer/canvas/canvasvectorlayerrenderer.js
index ba41325eca..1061501efb 100644
--- a/src/ol/renderer/canvas/canvasvectorlayerrenderer.js
+++ b/src/ol/renderer/canvas/canvasvectorlayerrenderer.js
@@ -6,6 +6,7 @@ goog.require('goog.events.EventType');
goog.require('goog.functions');
goog.require('ol.ViewHint');
goog.require('ol.extent');
+goog.require('ol.layer.Vector');
goog.require('ol.render.canvas.ReplayGroup');
goog.require('ol.renderer.canvas.Layer');
goog.require('ol.renderer.vector');
@@ -194,6 +195,9 @@ ol.renderer.canvas.VectorLayer.prototype.prepareFrame =
this.dirty_ = false;
var styleFunction = vectorLayer.getStyleFunction();
+ if (!goog.isDef(styleFunction)) {
+ styleFunction = ol.layer.Vector.defaultStyleFunction;
+ }
var replayGroup = new ol.render.canvas.ReplayGroup();
vectorSource.forEachFeatureInExtent(extent,
/**
@@ -227,6 +231,10 @@ ol.renderer.canvas.VectorLayer.prototype.renderFeature =
function(feature, resolution, styleFunction, replayGroup) {
var loading = false;
var styles = styleFunction(feature, resolution);
+ // FIXME if styles is null, should we use the default style?
+ if (!goog.isDefAndNotNull(styles)) {
+ return false;
+ }
// simplify to a tolerance of half a CSS pixel
var squaredTolerance = resolution * resolution / 4;
var i, ii, style, imageStyle, imageState;
diff --git a/src/ol/style/fillstyle.js b/src/ol/style/fillstyle.js
index 438af2e496..78a4ddf59e 100644
--- a/src/ol/style/fillstyle.js
+++ b/src/ol/style/fillstyle.js
@@ -6,9 +6,11 @@ goog.require('ol.color');
/**
* @constructor
- * @param {olx.style.FillOptions} options Options.
+ * @param {olx.style.FillOptions=} opt_options Options.
*/
-ol.style.Fill = function(options) {
+ol.style.Fill = function(opt_options) {
+
+ var options = goog.isDef(opt_options) ? opt_options : {};
/**
* @type {ol.Color|string}
diff --git a/src/ol/style/imagestyle.js b/src/ol/style/imagestyle.js
index 4322dcf9a9..98087746b9 100644
--- a/src/ol/style/imagestyle.js
+++ b/src/ol/style/imagestyle.js
@@ -24,10 +24,12 @@ ol.style.ImageState = {
/**
* @constructor
- * @param {olx.style.ImageOptions} options Options.
+ * @param {olx.style.ImageOptions=} opt_options Options.
* @extends {goog.events.EventTarget}
*/
-ol.style.Image = function(options) {
+ol.style.Image = function(opt_options) {
+
+ var options = goog.isDef(opt_options) ? opt_options : {};
goog.base(this);
diff --git a/src/ol/style/strokestyle.js b/src/ol/style/strokestyle.js
index fc5575eff1..7363fd3a2f 100644
--- a/src/ol/style/strokestyle.js
+++ b/src/ol/style/strokestyle.js
@@ -6,9 +6,11 @@ goog.require('ol.color');
/**
* @constructor
- * @param {olx.style.StrokeOptions} options Options.
+ * @param {olx.style.StrokeOptions=} opt_options Options.
*/
-ol.style.Stroke = function(options) {
+ol.style.Stroke = function(opt_options) {
+
+ var options = goog.isDef(opt_options) ? opt_options : {};
/**
* @type {ol.Color|string}
diff --git a/src/ol/style/style.js b/src/ol/style/style.js
index d6e26decac..ebe3360482 100644
--- a/src/ol/style/style.js
+++ b/src/ol/style/style.js
@@ -8,10 +8,12 @@ goog.require('ol.style.Image');
/**
* @constructor
- * @param {olx.style.StyleOptions} options Style options.
+ * @param {olx.style.StyleOptions=} opt_options Style options.
* @todo stability experimental
*/
-ol.style.Style = function(options) {
+ol.style.Style = function(opt_options) {
+
+ var options = goog.isDef(opt_options) ? opt_options : {};
/**
* @type {ol.style.Fill}
diff --git a/src/ol/style/textstyle.js b/src/ol/style/textstyle.js
index 6e6d6b9b6c..a2a7851897 100644
--- a/src/ol/style/textstyle.js
+++ b/src/ol/style/textstyle.js
@@ -4,9 +4,11 @@ goog.provide('ol.style.Text');
/**
* @constructor
- * @param {olx.style.TextOptions} options Options.
+ * @param {olx.style.TextOptions=} opt_options Options.
*/
-ol.style.Text = function(options) {
+ol.style.Text = function(opt_options) {
+
+ var options = goog.isDef(opt_options) ? opt_options : {};
/**
* @type {string|undefined}