From bb9623adec62c1ee07a896d064aa500605f5756d Mon Sep 17 00:00:00 2001
From: Antonio Ospite <ospite@studenti.unina.it>
Date: Tue, 26 Jul 2011 23:08:52 +0200
Subject: [PATCH] Issue #1230456 by ao2: Add documentDrag behaviour to
 Navigation control
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Add a behavior to set the documentDrag option[1] to
OpenLayers.Control.Navigation, without this setting dragging the map
stops whenever another element is intercepted with the mouse.

[1] http://dev.openlayers.org/docs/files/OpenLayers/Control/Navigation-js.html#OpenLayers.Control.Navigation.documentDrag

---
 .../behaviors/js/openlayers_behavior_navigation.js |    3 ++-
 .../behaviors/openlayers_behavior_navigation.inc   |   11 +++++++++--
 2 files changed, 11 insertions(+), 3 deletions(-)

diff --git a/includes/behaviors/js/openlayers_behavior_navigation.js b/includes/behaviors/js/openlayers_behavior_navigation.js
index 305a7d1..daf28c6 100644
--- a/includes/behaviors/js/openlayers_behavior_navigation.js
+++ b/includes/behaviors/js/openlayers_behavior_navigation.js
@@ -14,7 +14,8 @@ Drupal.behaviors.openlayers_behavior_navigation = {
     if (data && data.map.behaviors['openlayers_behavior_navigation']) {
       // Add control
       var options = {
-        'zoomWheelEnabled': data.map.behaviors['openlayers_behavior_navigation'].zoomWheelEnabled
+        'zoomWheelEnabled': data.map.behaviors['openlayers_behavior_navigation'].zoomWheelEnabled,
+        'documentDrag': Boolean(data.map.behaviors['openlayers_behavior_navigation'].documentDrag),
       };
       var control = new OpenLayers.Control.Navigation(options);
       data.openlayers.addControl(control);
diff --git a/includes/behaviors/openlayers_behavior_navigation.inc b/includes/behaviors/openlayers_behavior_navigation.inc
index a32d1c4..20341cb 100644
--- a/includes/behaviors/openlayers_behavior_navigation.inc
+++ b/includes/behaviors/openlayers_behavior_navigation.inc
@@ -15,7 +15,8 @@ class openlayers_behavior_navigation extends openlayers_behavior {
   function options_init() {
     return array(
       'navigation' => '',
-      'zoomWheelEnabled' => TRUE
+      'zoomWheelEnabled' => TRUE,
+      'documentDrag' => FALSE,
     );
   }
 
@@ -31,7 +32,13 @@ class openlayers_behavior_navigation extends openlayers_behavior {
         '#description' => t('Enable zooming via the mouse scroll wheel. This can 
           interfere with page scrolling.'),
         '#default_value' => isset($defaults['zoomWheelEnabled']) ? $defaults['zoomWheelEnabled'] : TRUE 
-      )
+      ),
+      'documentDrag' => array(
+        '#type' => 'checkbox',
+        '#title' => t('Document Drag'),
+        '#description' => t('Allow panning of the map by dragging outside map viewport.'),
+        '#default_value' => isset($defaults['documentDrag']) ? $defaults['documentDrag'] : FALSE
+      ),
     );
   }
 
-- 
1.7.5.4