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Simplify zoom slider code

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This commit is contained in:
Éric Lemoine
2013-11-16 23:29:22 +01:00
parent 16b0e73666
commit 559cad4cf3
1 changed files with 11 additions and 31 deletions
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42
src/ol/control/zoomslidercontrol.js
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@@ -68,12 +68,6 @@ ol.control.ZoomSlider = function(opt_options) {
*/
this.sliderInitialized_ = false;
/**
* @private
* @type {Array.<?number>}
*/
this.draggerListenerKeys_ = null;
var className = goog.isDef(options.className) ?
options.className : 'ol-zoomslider';
var thumbElement = goog.dom.createDom(goog.dom.TagName.DIV,
@@ -81,7 +75,17 @@ ol.control.ZoomSlider = function(opt_options) {
var sliderElement = goog.dom.createDom(goog.dom.TagName.DIV,
[className, ol.css.CLASS_UNSELECTABLE], thumbElement);
this.dragger_ = this.createDraggable_(sliderElement);
/**
* @type {goog.fx.Dragger}
* @private
*/
this.dragger_ = new goog.fx.Dragger(thumbElement);
this.registerDisposable(this.dragger_);
goog.events.listen(this.dragger_, [
goog.fx.Dragger.EventType.DRAG,
goog.fx.Dragger.EventType.END
], this.handleSliderChange_, undefined, this);
// FIXME currently only a do nothing function is bound.
goog.events.listen(sliderElement, [
@@ -285,27 +289,3 @@ ol.control.ZoomSlider.prototype.handleSliderChange_ = function(e) {
view.setResolution(resolution);
}
};
/**
* Actually enable draggable behaviour for the thumb of the zoomslider and bind
* relvant event listeners.
*
* @param {Element} elem The element for the slider.
* @return {goog.fx.Dragger} The actual goog.fx.Dragger instance.
* @private
*/
ol.control.ZoomSlider.prototype.createDraggable_ = function(elem) {
if (!goog.isNull(this.draggerListenerKeys_)) {
goog.array.forEach(this.draggerListenerKeys_, goog.events.unlistenByKey);
this.draggerListenerKeys_ = null;
}
var dragger = new goog.fx.Dragger(elem.childNodes[0]);
this.draggerListenerKeys_ = [
goog.events.listen(dragger, [
goog.fx.Dragger.EventType.DRAG,
goog.fx.Dragger.EventType.END
], this.handleSliderChange_, undefined, this)
];
return dragger;
};