From c7f78caec9ea01daf1af7c4e1cee29a456a1657f Mon Sep 17 00:00:00 2001
From: Tom Payne <twpayne@gmail.com>
Date: Mon, 13 Aug 2012 18:41:10 +0200
Subject: [PATCH] Check left mouse button is pressed in interactions

---
 src/ol/interaction/altdragrotate.js | 3 ++-
 src/ol/interaction/dblclickzoom.js  | 4 +++-
 src/ol/interaction/shiftdragzoom.js | 2 +-
 3 files changed, 6 insertions(+), 3 deletions(-)

diff --git a/src/ol/interaction/altdragrotate.js b/src/ol/interaction/altdragrotate.js
index 03cbbf6d71..5c42c4d434 100644
--- a/src/ol/interaction/altdragrotate.js
+++ b/src/ol/interaction/altdragrotate.js
@@ -44,7 +44,8 @@ ol.interaction.AltDragRotate.prototype.handleDragStart =
     function(mapBrowserEvent) {
   var browserEvent = mapBrowserEvent.browserEvent;
   var map = mapBrowserEvent.map;
-  if (map.canRotate() && browserEvent.altKey) {
+  if (browserEvent.isMouseActionButton() && browserEvent.altKey &&
+      map.canRotate()) {
     var size = map.getSize();
     var theta = Math.atan2(
         size.height / 2 - browserEvent.offsetY,
diff --git a/src/ol/interaction/dblclickzoom.js b/src/ol/interaction/dblclickzoom.js
index 2a223c81ac..89bad5955d 100644
--- a/src/ol/interaction/dblclickzoom.js
+++ b/src/ol/interaction/dblclickzoom.js
@@ -23,7 +23,9 @@ goog.inherits(ol.interaction.DblClickZoom, ol.Interaction);
  */
 ol.interaction.DblClickZoom.prototype.handleMapBrowserEvent =
     function(mapBrowserEvent) {
-  if (mapBrowserEvent.type == goog.events.EventType.DBLCLICK) {
+  var browserEvent = mapBrowserEvent.browserEvent;
+  if (browserEvent.type == goog.events.EventType.DBLCLICK &&
+      browserEvent.isMouseActionButton()) {
     var map = mapBrowserEvent.map;
     var resolution = map.getResolution();
     var delta = mapBrowserEvent.browserEvent.shiftKey ? -1 : 1;
diff --git a/src/ol/interaction/shiftdragzoom.js b/src/ol/interaction/shiftdragzoom.js
index a10e887d17..ce70e4d0c7 100644
--- a/src/ol/interaction/shiftdragzoom.js
+++ b/src/ol/interaction/shiftdragzoom.js
@@ -55,7 +55,7 @@ ol.interaction.ShiftDragZoom.prototype.handleDragEnd =
 ol.interaction.ShiftDragZoom.prototype.handleDragStart =
     function(mapBrowserEvent) {
   var browserEvent = mapBrowserEvent.browserEvent;
-  if (browserEvent.shiftKey) {
+  if (browserEvent.isMouseActionButton() && browserEvent.shiftKey) {
     browserEvent.preventDefault();
     return true;
   } else {