From 7738b0f7b99eeeeaab3d9467928e63d7b59383dd Mon Sep 17 00:00:00 2001
From: Silvio <silvio@socioambiental.org>
Date: Wed, 14 Nov 2012 14:33:47 -0200
Subject: Adding gmapArcgisShowPolygons() and gmapArcgisHidePolygons()

---
 gmap_arcgis.js | 47 ++++++++++++++++++++++++++++++++---------------
 1 file changed, 32 insertions(+), 15 deletions(-)

diff --git a/gmap_arcgis.js b/gmap_arcgis.js
index a5774ce..eb90428 100644
--- a/gmap_arcgis.js
+++ b/gmap_arcgis.js
@@ -4,7 +4,7 @@
 google.load("maps", "2.x");
 
 // Global variables
-var map, mapExtension, gOverlays,markers,pol;
+var map, mapExtension, gOverlays;
 
 // Setup custom GMap Overlays (layers and labels)
 function gmap_arcgis() {
@@ -22,10 +22,6 @@ function gmap_arcgis() {
    
     // Get data from Drupal
     if (Drupal.settings.gmap_arcgis !== undefined) {
-      // Get array of polygons
-      if (Drupal.settings.gmap_arcgis.polygons !== undefined) {
-        polygons = Drupal.settings.gmap_arcgis.polygons;
-      }
       // Get array of labels
       if (Drupal.settings.gmap_arcgis.labels !== undefined) {
         labels = Drupal.settings.gmap_arcgis.labels;
@@ -73,9 +69,7 @@ function gmap_arcgis() {
       showLabels(label[0], fields, content, icon);
     }
   
-    for (j = 0; j < polygons.length; j++) {
-      showPolygons(polygons[j]['base'] + polygons[j]['service'], polygons[j]['layers']);
-    }
+    gmapArcgisShowPolygons(Drupal.settings.gmap_arcgis.polygons);
     
   }, 5);
   //setTimeout($.unblockUI, 10000);
@@ -121,20 +115,43 @@ function showLabelsCallback(fields, content, icon) {
   }
 }
 
+// Show all defined polygons
+function gmapArcgisShowPolygons(polygons) {
+  for (j = 0; j < polygons.length; j++) {
+    //showPolygons(polygons[j]['base'] + polygons[j]['service'], polygons[j]['layers']);
+    showPolygon(polygons[j]);
+  }
+}
+
+// Hide all defined polygons
+function gmapArcgisHidePolygons(polygons) {
+  for (j = 0; j < polygons.length; j++) {
+    polygons[j].overlay.hide();
+  }
+}
+
 // Add polygons from a given ArcGIS MapServer Layer
-function showPolygons(uri, layers = undefined) {
-  pol = new esri.arcgis.gmaps.DynamicMapServiceLayer(uri, null, 0.55);
+function showPolygon(polygon) {
+  if (polygon.overlay != undefined) {
+    polygon.overlay.show();
+    return;
+  }
+
+  uri    = polygon['base'] + polygon['service'];
+  layers = polygon['layers'];
+
+  polygon.overlay = new esri.arcgis.gmaps.DynamicMapServiceLayer(uri, null, 0.55);
 
   if (layers != undefined || layers == []) {
-    pol.setVisibleLayers(layers);
+    polygon.overlay.setVisibleLayers(layers);
   }
 
-  //GEvent.addListener(pol,"load",function(g) { map.addOverlay(g);setTimeout($.unblockUI, 6000);});
-  GEvent.addListener(pol, "load", showPolygonsCallback);
+  //GEvent.addListener(polygon.overlay,"load",function(g) { map.addOverlay(g);setTimeout($.unblockUI, 6000);});
+  GEvent.addListener(polygon.overlay, "load", showPolygonCallback);
 }
 
-// Callback for showPolygons
-function showPolygonsCallback(mapservicelayer, error) {
+// Callback for showPolygon
+function showPolygonCallback(mapservicelayer, error) {
   map.addOverlay(mapservicelayer);
   setTimeout($.unblockUI, 6000);
 }
-- 
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