//******************************************************************************
// Layer and group visibility functions
//******************************************************************************

//******************************************************************************
// allLayersOff function
//******************************************************************************
function allLayersOff()
{
  allLayers = map.getMapLayersEx();
  for (var i = 0; i < allLayers.size(); i++)  
   {
     var layer = allLayers.item(i);
     layer.setShowInLegend(false);
     layer.setVisibility(false);
   }
}

//******************************************************************************
// allGroupsOff function
//******************************************************************************
function allGroupsOff()
{
  allLayerGroups = map.getMapLayerGroups();
  for (var i = 0; i < allLayerGroups.size(); i++)  
  {
    var layerGroup = allLayerGroups.item(i);
    layerGroup.setShowInLegend(false);
  }
}

//******************************************************************************
// layerSet function
// Parameters:
//     legend        Show layer in legend.          true/false or 1/0
//     visible       Make layer visible (checked).  true/false or 1/0
//     layername     Layer name
// Sample invocation:
//     layerSet(1,0,"Streets");     // Show the Streets layer in the legend, but turn it off.
//******************************************************************************
function layerSet(legend,visible,layername)
{
  // alert(layername); 
  layer = map.getMapLayer(layername);  
  if (layer == null)
    alert("Error - "+layername+" layer not found."); 
  else
  {
    layer.setShowInLegend(legend);	
    layer.setVisibility(visible);
  }
}

//******************************************************************************
// groupSet function
// Parameters:
//     legend        Show group in legend.          true/false or 1/0
//     visible       Make group visible (checked).  true/false or 1/0
//     groupname     Group name
// Sample invocation:
//     groupSet(1,1,"Census");     // Show the Census Group in the legend and turn it on.
//******************************************************************************
function groupSet(legend,visible,groupname)
{
  // alert(groupname); 
  group = map.getMapLayerGroup(groupname);  
  if (group == null)
    alert("Error - "+groupname+" group not found."); 
  else
  {
    group.setShowInLegend(legend);	
    group.setVisibility(visible);
  }  
}

//******************************************************************************
// createGroup function
// Creates a group, showing it in the legend and making it visible (checked) by default.  
// Parameters:
//     groupname     Group name
// Sample invocation:
//     createGroup("Rillito Water Course");  // Create the Rillito Water Course group in the legend and turn it on.
//******************************************************************************
function createGroup(groupname)
{
  group = map.createMapLayerGroup(groupname);
  group.setLegendLabel(groupname);
}  

//******************************************************************************
// putLayerInGroup function
// Parameters:
//     layername     Layer name (The layer must already be in the map or added from an MLF.)
//     groupname     Group name
// Sample invocation:
//     putLayerInGroup("Parcel Addresses","Parcels");  // Put the Parcel Addresses layer in the Parcels group
//******************************************************************************
function putLayerInGroup(layername,groupname)
{
  layer = map.getMapLayer(layername);
  if (layer == null)
    alert("Error - "+layername+" layer not found."); 
  group = map.getMapLayerGroup(groupname); 
  if (group == null)
    alert("Error - "+groupname+" group not found."); 
  if ((group != null) && (layer != null))
    group.addMapLayer(layer);  
}