Move postrender event listening into base class

src/ol/control/attributioncontrol.js

@@ -5,13 +5,10 @@ goog.provide('ol.control.Attribution');
 goog.require('goog.array');
 goog.require('goog.dom');
 goog.require('goog.dom.TagName');
-goog.require('goog.events');
 goog.require('goog.object');
 goog.require('goog.style');
 goog.require('ol.Attribution');
 goog.require('ol.FrameState');
-goog.require('ol.MapEvent');
-goog.require('ol.MapEventType');
 goog.require('ol.TileRange');
 goog.require('ol.control.Control');
 goog.require('ol.css');
@@ -62,12 +59,6 @@ ol.control.Attribution = function(opt_options) {
    */
   this.attributionElementRenderedVisible_ = {};
 
-  /**
-   * @private
-   * @type {?number}
-   */
-  this.postrenderListenKey_ = null;
-
 };
 goog.inherits(ol.control.Attribution, ol.control.Control);
 
@@ -108,29 +99,13 @@ ol.control.Attribution.prototype.getTileSourceAttributions =
 
 
 /**
- * @param {ol.MapEvent} mapEvent Map event.
+ * @inheritDoc
  */
 ol.control.Attribution.prototype.handleMapPostrender = function(mapEvent) {
   this.updateElement_(mapEvent.frameState);
 };
 
 
-/**
- * @inheritDoc
- */
-ol.control.Attribution.prototype.setMap = function(map) {
-  if (!goog.isNull(this.postrenderListenKey_)) {
-    goog.events.unlistenByKey(this.postrenderListenKey_);
-    this.postrenderListenKey_ = null;
-  }
-  goog.base(this, 'setMap', map);
-  if (!goog.isNull(map)) {
-    this.postrenderListenKey_ = goog.events.listen(
-        map, ol.MapEventType.POSTRENDER, this.handleMapPostrender, false, this);
-  }
-};
-
-
 /**
  * @private
  * @param {?ol.FrameState} frameState Frame state.

src/ol/control/control.js

@@ -2,6 +2,9 @@ goog.provide('ol.control.Control');
 goog.provide('ol.control.ControlOptions');
 
 goog.require('goog.Disposable');
+goog.require('goog.events');
+goog.require('ol.MapEvent');
+goog.require('ol.MapEventType');
 
 
 /**
@@ -44,6 +47,12 @@ ol.control.Control = function(controlOptions) {
    */
   this.map_ = null;
 
+  /**
+   * @private
+   * @type {?number}
+   */
+  this.postrenderListenKey_ = null;
+
   if (goog.isDef(controlOptions.map)) {
     this.setMap(controlOptions.map);
   }
@@ -69,6 +78,12 @@ ol.control.Control.prototype.getMap = function() {
 };
 
 
+/**
+ * @param {ol.MapEvent} mapEvent Map event.
+ */
+ol.control.Control.prototype.handleMapPostrender = goog.nullFunction;
+
+
 /**
  * Removes the control from its current map and attaches it to the new map.
  * Subtypes might also wish set up event handlers to get notified about changes
@@ -80,10 +95,18 @@ ol.control.Control.prototype.setMap = function(map) {
   if (!goog.isNull(this.map_)) {
     goog.dom.removeNode(this.element);
   }
+  if (!goog.isNull(this.postrenderListenKey_)) {
+    goog.events.unlistenByKey(this.postrenderListenKey_);
+    this.postrenderListenKey_ = null;
+  }
   this.map_ = map;
   if (!goog.isNull(this.map_)) {
     var target = goog.isDef(this.target_) ?
         this.target_ : map.getOverlayContainer();
     goog.dom.appendChild(target, this.element);
+    if (this.handleMapPostrender !== goog.nullFunction) {
+      this.postrenderListenKey_ = goog.events.listen(map,
+          ol.MapEventType.POSTRENDER, this.handleMapPostrender, false, this);
+    }
   }
 };

src/ol/control/logocontrol.js

@@ -2,12 +2,9 @@ goog.provide('ol.control.Logo');
 
 goog.require('goog.dom');
 goog.require('goog.dom.TagName');
-goog.require('goog.events');
 goog.require('goog.object');
 goog.require('goog.style');
 goog.require('ol.FrameState');
-goog.require('ol.MapEvent');
-goog.require('ol.MapEventType');
 goog.require('ol.control.Control');
 goog.require('ol.css');
 
@@ -50,12 +47,6 @@ ol.control.Logo = function(opt_options) {
    */
   this.logoElements_ = {};
 
-  /**
-   * @private
-   * @type {?number}
-   */
-  this.postrenderListenKey_ = null;
-
 };
 goog.inherits(ol.control.Logo, ol.control.Control);
 
@@ -68,22 +59,6 @@ ol.control.Logo.prototype.handleMapPostrender = function(mapEvent) {
 };
 
 
-/**
- * @inheritDoc
- */
-ol.control.Logo.prototype.setMap = function(map) {
-  if (!goog.isNull(this.postrenderListenKey_)) {
-    goog.events.unlistenByKey(this.postrenderListenKey_);
-    this.postrenderListenKey_ = null;
-  }
-  goog.base(this, 'setMap', map);
-  if (!goog.isNull(map)) {
-    this.postrenderListenKey_ = goog.events.listen(
-        map, ol.MapEventType.POSTRENDER, this.handleMapPostrender, false, this);
-  }
-};
-
-
 /**
  * @param {?ol.FrameState} frameState Frame state.
  * @private

src/ol/control/mousepositioncontrol.js

@@ -9,8 +9,6 @@ goog.require('goog.events');
 goog.require('goog.events.EventType');
 goog.require('goog.style');
 goog.require('ol.CoordinateFormatType');
-goog.require('ol.MapEvent');
-goog.require('ol.MapEventType');
 goog.require('ol.Pixel');
 goog.require('ol.Projection');
 goog.require('ol.TransformFunction');
@@ -98,8 +96,7 @@ goog.inherits(ol.control.MousePosition, ol.control.Control);
 
 
 /**
- * @param {ol.MapEvent} mapEvent Map event.
- * @protected
+ * @inheritDoc
  */
 ol.control.MousePosition.prototype.handleMapPostrender = function(mapEvent) {
   var frameState = mapEvent.frameState;
@@ -151,9 +148,7 @@ ol.control.MousePosition.prototype.setMap = function(map) {
       goog.events.listen(viewport, goog.events.EventType.MOUSEMOVE,
           this.handleMouseMove, false, this),
       goog.events.listen(viewport, goog.events.EventType.MOUSEOUT,
-          this.handleMouseOut, false, this),
-      goog.events.listen(map, ol.MapEventType.POSTRENDER,
-          this.handleMapPostrender, false, this)
+          this.handleMouseOut, false, this)
     ];
   }
 };

src/ol/control/scalelinecontrol.js

@@ -4,8 +4,6 @@ goog.provide('ol.control.ScaleLineUnits');
 goog.require('goog.dom');
 goog.require('goog.style');
 goog.require('ol.FrameState');
-goog.require('ol.MapEvent');
-goog.require('ol.MapEventType');
 goog.require('ol.ProjectionUnits');
 goog.require('ol.TransformFunction');
 goog.require('ol.control.Control');
@@ -65,12 +63,6 @@ ol.control.ScaleLine = function(opt_options) {
   this.units_ = goog.isDef(options.units) ?
       options.units : ol.control.ScaleLineUnits.METRIC;
 
-  /**
-   * @private
-   * @type {Array.<?number>}
-   */
-  this.listenerKeys_ = null;
-
   /**
    * @private
    * @type {boolean}
@@ -112,30 +104,11 @@ goog.inherits(ol.control.ScaleLine, ol.control.Control);
 ol.control.ScaleLine.LEADING_DIGITS = [1, 2, 5];
 
 
-/**
- * @param {ol.MapEvent} mapEvent Map event.
- */
-ol.control.ScaleLine.prototype.handleMapPostrender = function(mapEvent) {
-  var frameState = mapEvent.frameState;
-  this.updateElement_(mapEvent.frameState);
-};
-
-
 /**
  * @inheritDoc
  */
-ol.control.ScaleLine.prototype.setMap = function(map) {
-  if (!goog.isNull(this.listenerKeys_)) {
-    goog.array.forEach(this.listenerKeys_, goog.events.unlistenByKey);
-    this.listenerKeys_ = null;
-  }
-  goog.base(this, 'setMap', map);
-  if (!goog.isNull(map)) {
-    this.listenerKeys_ = [
-      goog.events.listen(map, ol.MapEventType.POSTRENDER,
-          this.handleMapPostrender, false, this)
-    ];
-  }
+ol.control.ScaleLine.prototype.handleMapPostrender = function(mapEvent) {
+  this.updateElement_(mapEvent.frameState);
 };
 
 

src/ol/control/zoomslidercontrol.js

@@ -10,7 +10,6 @@ goog.require('goog.dom.TagName');
 goog.require('goog.events');
 goog.require('goog.fx.Dragger');
 goog.require('goog.style');
-goog.require('ol.MapEventType');
 goog.require('ol.control.Control');
 goog.require('ol.css');
 
@@ -74,12 +73,6 @@ ol.control.ZoomSlider = function(zoomSliderOptions) {
    */
   this.direction_ = ol.control.ZoomSlider.direction.VERTICAL;
 
-  /**
-   * @private
-   * @type {Array.<?number>}
-   */
-  this.mapListenerKeys_ = null;
-
   /**
    * @private
    * @type {Array.<?number>}
@@ -157,31 +150,11 @@ ol.control.ZoomSlider.DEFAULT_MAX_RESOLUTION = 156543.0339;
 ol.control.ZoomSlider.prototype.setMap = function(map) {
   goog.base(this, 'setMap', map);
   this.currentResolution_ = map.getView().getResolution();
-  this.initMapEventListeners_();
   this.initSlider_();
   this.positionThumbForResolution_(this.currentResolution_);
 };
 
 
-/**
- * Initializes the event listeners for map events.
- *
- * @private
- */
-ol.control.ZoomSlider.prototype.initMapEventListeners_ = function() {
-  if (!goog.isNull(this.mapListenerKeys_)) {
-    goog.array.forEach(this.mapListenerKeys_, goog.events.unlistenByKey);
-    this.mapListenerKeys_ = null;
-  }
-  if (!goog.isNull(this.getMap())) {
-    this.mapListenerKeys_ = [
-      goog.events.listen(this.getMap(), ol.MapEventType.POSTRENDER,
-          this.handleMapPostRender_, undefined, this)
-    ];
-  }
-};
-
-
 /**
  * Initializes the slider element. This will determine and set this controls
  * direction_ and also constrain the dragging of the thumb to always be within
@@ -217,11 +190,10 @@ ol.control.ZoomSlider.prototype.initSlider_ = function() {
 
 
 /**
- * @param {ol.MapEvent} mapEvtObj The ol.MapEvent object.
- * @private
+ * @inheritDoc
  */
-ol.control.ZoomSlider.prototype.handleMapPostRender_ = function(mapEvtObj) {
-  var res = mapEvtObj.frameState.view2DState.resolution;
+ol.control.ZoomSlider.prototype.handleMapPostrender = function(mapEvent) {
+  var res = mapEvent.frameState.view2DState.resolution;
   if (res !== this.currentResolution_) {
     this.currentResolution_ = res;
     this.positionThumbForResolution_(res);