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Don't drag on incompletely defined maps

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This commit is contained in:
Tom Payne
2012-07-19 00:09:32 +02:00
parent 0e3b97a0b6
commit 4e347dcf45
1 changed files with 6 additions and 1 deletions
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7
src/ol/control/drag.js
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@@ -84,6 +84,11 @@ ol.control.Drag.prototype.handleDragEnd = goog.nullFunction;
* @inheritDoc
*/
ol.control.Drag.prototype.handleMapBrowserEvent = function(mapBrowserEvent) {
var center = mapBrowserEvent.map.getCenter();
var resolution = mapBrowserEvent.map.getResolution();
if (!goog.isDef(center) || !goog.isDef(resolution)) {
return;
}
var browserEventObject;
if (this.dragging_) {
if (mapBrowserEvent.type == goog.events.EventType.MOUSEMOVE ||
@@ -107,7 +112,7 @@ ol.control.Drag.prototype.handleMapBrowserEvent = function(mapBrowserEvent) {
this.startY = browserEventObject.offsetY;
this.deltaX = 0;
this.deltaY = 0;
this.startCenter = mapBrowserEvent.map.getCenter();
this.startCenter = center;
this.startCoordinate = mapBrowserEvent.getCoordinate();
if (this.handleDragStart(mapBrowserEvent)) {
this.dragging_ = true;