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Don't trigger extra drag events on touch devices.

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This commit is contained in:
ahocevar
2012-09-25 08:30:57 +02:00
parent 27d3a88413
commit 6b8e14c623
2 changed files with 28 additions and 1 deletions
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23
src/ol/map.js
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@@ -97,6 +97,12 @@ ol.Map = function(
*/
this.logger = goog.debug.Logger.getLogger('ol.map.' + goog.getUid(this));
}
/**
* @type {boolean} Are we a touch device?
* @private
*/
this.isTouch_ = false;
/**
* @type {ol.TransformFunction}
@@ -176,6 +182,8 @@ ol.Map = function(
goog.fx.Dragger.EventType.DRAG,
goog.fx.Dragger.EventType.END
], this.handleDraggerEvent, false, this);
goog.events.listen(this.viewport_, goog.events.EventType.TOUCHSTART,
this.handleTouchstart, false, this);
this.registerDisposable(dragger);
/**
@@ -503,12 +511,25 @@ ol.Map.prototype.handleBrowserEvent = function(browserEvent, opt_type) {
};
ol.Map.prototype.handleTouchstart = function(browserEvent) {
this.isTouch_ = true;
// now we know that we are a touch device
goog.events.unlisten(this.viewport_, goog.events.EventType.TOUCHSTART,
this.handleTouchstart, false, this);
};
/**
* @param {goog.fx.DragEvent} dragEvent Drag event.
*/
ol.Map.prototype.handleDraggerEvent = function(dragEvent) {
var browserEvent = dragEvent.browserEvent;
this.handleBrowserEvent(browserEvent, dragEvent.type);
// workaround for goog.fx.Dragger issue that causes both mousemove and
// touchmove to trigger a drag event on touch devices
if ((this.isTouch_ && browserEvent.type != goog.events.EventType.MOUSEMOVE) ||
!this.isTouch_) {
this.handleBrowserEvent(browserEvent, dragEvent.type);
}
};