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Listen for geometry events and fire feature events

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This commit is contained in:
Tim Schaub
2013-10-03 14:21:15 -06:00
parent b821619368
commit adf99d592a
2 changed files with 106 additions and 2 deletions
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63
src/ol/feature.js
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@@ -1,7 +1,13 @@
goog.provide('ol.Feature');
goog.provide('ol.FeatureEvent');
goog.provide('ol.FeatureEventType');
goog.require('goog.events');
goog.require('goog.events.Event');
goog.require('goog.events.EventType');
goog.require('ol.Object');
goog.require('ol.geom.Geometry');
goog.require('ol.geom.GeometryEvent');
goog.require('ol.layer.VectorLayerRenderIntent');
@@ -99,16 +105,44 @@ ol.Feature.prototype.getSymbolizers = function() {
};
/**
* Listener for geometry change events.
* @param {ol.geom.GeometryEvent} evt Geometry event.
* @private
*/
ol.Feature.prototype.handleGeometryChange_ = function(evt) {
this.dispatchEvent(new ol.FeatureEvent(
ol.FeatureEventType.CHANGE, this, evt.oldExtent));
};
/**
* @inheritDoc
* @param {string} key Key.
* @param {*} value Value.
*/
ol.Feature.prototype.set = function(key, value) {
if (!goog.isDef(this.geometryName_) && (value instanceof ol.geom.Geometry)) {
this.geometryName_ = key;
var geometry = this.getGeometry();
var oldExtent = null;
if (goog.isDefAndNotNull(geometry)) {
oldExtent = geometry.getBounds();
if (key === this.geometryName_) {
goog.events.unlisten(geometry, goog.events.EventType.CHANGE,
this.handleGeometryChange_, false, this);
}
}
if (value instanceof ol.geom.Geometry) {
if (!goog.isDef(this.geometryName_)) {
this.geometryName_ = key;
}
if (key === this.geometryName_) {
goog.events.listen(value, goog.events.EventType.CHANGE,
this.handleGeometryChange_, false, this);
}
}
goog.base(this, 'set', key, value);
this.dispatchEvent(new ol.FeatureEvent(
ol.FeatureEventType.CHANGE, this, oldExtent));
};
@@ -150,3 +184,28 @@ ol.Feature.prototype.setSymbolizers = function(symbolizers) {
* @type {string}
*/
ol.Feature.DEFAULT_GEOMETRY = 'geometry';
/**
* @enum {string}
*/
ol.FeatureEventType = {
CHANGE: 'featurechange'
};
/**
* Constructor for feature events.
* @constructor
* @extends {goog.events.Event}
* @param {string} type Event type.
* @param {ol.Feature} target The target feature.
* @param {ol.Extent} oldExtent The previous geometry extent.
*/
ol.FeatureEvent = function(type, target, oldExtent) {
goog.base(this, type, target);
this.oldExtent = oldExtent;
};
goog.inherits(ol.FeatureEvent, goog.events.Event);