Support changing the modification key used to draw the zoomBox, from Jachym

with minor modifications. (Closes #1769)


git-svn-id: http://svn.openlayers.org/trunk/openlayers@8285 dc9f47b5-9b13-0410-9fdd-eb0c1a62fdaf

lib/OpenLayers/Control/Navigation.js

@@ -53,6 +53,17 @@ OpenLayers.Control.Navigation = OpenLayers.Class(OpenLayers.Control, {
      * {Boolean} Whether or not to handle right clicks. Default is false.
      */
     handleRightClicks: false,
+
+    /**
+     * APIProperty: zoomBoxKeyMask
+     * {Integer} <OpenLayers.Handler> key code of the key, which has to be
+     *    pressed, while drawing the zoom box with the mouse on the screen. 
+     *    You should probably set handleRightClicks to true if you use this
+     *    with MOD_CTRL, to disable the context menu for machines which use
+     *    CTRL-Click as a right click.
+     * Default: <OpenLayers.Handler.MOD_SHIFT
+     */
+    zoomBoxKeyMask: OpenLayers.Handler.MOD_SHIFT,
     
     /**
      * Constructor: OpenLayers.Control.Navigation
@@ -136,7 +147,7 @@ OpenLayers.Control.Navigation = OpenLayers.Class(OpenLayers.Control, {
             OpenLayers.Util.extend({map: this.map}, this.dragPanOptions)
         );
         this.zoomBox = new OpenLayers.Control.ZoomBox(
-                    {map: this.map, keyMask: OpenLayers.Handler.MOD_SHIFT});
+                    {map: this.map, keyMask: this.zoomBoxKeyMask});
         this.dragPan.draw();
         this.zoomBox.draw();
         this.handlers.wheel = new OpenLayers.Handler.MouseWheel(