Add a 'condition' option to ol.interaction.Modify

2016-05-09 17:13:22 +02:00
parent 8c8c4c3df4
commit b49546d2af
4 changed files with 59 additions and 2 deletions
@@ -220,3 +220,18 @@ ol.events.condition.mouseOnly = function(mapBrowserEvent) {
  // see http://www.w3.org/TR/pointerevents/#widl-PointerEvent-pointerType
  return mapBrowserEvent.pointerEvent.pointerType == 'mouse';
 };
+
+
+/**
+ * Return `true` if the event originates from a primary pointer in
+ * contact with the surface or if the left mouse button is pressed.
+ * @see http://www.w3.org/TR/pointerevents/#button-states
+ *
+ * @param {ol.MapBrowserEvent} mapBrowserEvent Map browser event.
+ * @return {boolean} True if the event originates from a primary pointer.
+ * @api
+ */
+ol.events.condition.primaryAction = function(mapBrowserEvent) {
+  var pointerEvent = mapBrowserEvent.pointerEvent;
+  return pointerEvent.isPrimary && pointerEvent.button === 0;
+};