From 0f18c0ce790a8d252f737385cd3599e6ac0e1ecd Mon Sep 17 00:00:00 2001
From: Tobrun <tobrun.van.nuland@gmail.com>
Date: Tue, 25 Sep 2018 11:30:59 +0200
Subject: [android] - add selected state paradigm to SymbolLayerActivity

[android] - update Circle layer activity with cluster configuration
---
 .../activity/style/SymbolLayerActivity.java        | 33 ++++++++++++++--------
 1 file changed, 22 insertions(+), 11 deletions(-)

(limited to 'platform/android/MapboxGLAndroidSDKTestApp/src/main/java/com/mapbox/mapboxsdk/testapp/activity/style/SymbolLayerActivity.java')

diff --git a/platform/android/MapboxGLAndroidSDKTestApp/src/main/java/com/mapbox/mapboxsdk/testapp/activity/style/SymbolLayerActivity.java b/platform/android/MapboxGLAndroidSDKTestApp/src/main/java/com/mapbox/mapboxsdk/testapp/activity/style/SymbolLayerActivity.java
index c62eef20f4..acdb1d216d 100644
--- a/platform/android/MapboxGLAndroidSDKTestApp/src/main/java/com/mapbox/mapboxsdk/testapp/activity/style/SymbolLayerActivity.java
+++ b/platform/android/MapboxGLAndroidSDKTestApp/src/main/java/com/mapbox/mapboxsdk/testapp/activity/style/SymbolLayerActivity.java
@@ -30,6 +30,9 @@ import com.mapbox.mapboxsdk.utils.BitmapUtils;
 import java.util.List;
 
 import static com.mapbox.mapboxsdk.style.expressions.Expression.get;
+import static com.mapbox.mapboxsdk.style.expressions.Expression.literal;
+import static com.mapbox.mapboxsdk.style.expressions.Expression.switchCase;
+import static com.mapbox.mapboxsdk.style.expressions.Expression.toBool;
 import static com.mapbox.mapboxsdk.style.layers.PropertyFactory.iconAllowOverlap;
 import static com.mapbox.mapboxsdk.style.layers.PropertyFactory.iconAnchor;
 import static com.mapbox.mapboxsdk.style.layers.PropertyFactory.iconColor;
@@ -55,7 +58,11 @@ public class SymbolLayerActivity extends AppCompatActivity implements MapboxMap.
   private static final String MARKER_SOURCE = "marker-source";
   private static final String MARKER_LAYER = "marker-layer";
   private static final String MARKER_ICON = "my-layers-image";
+  public static final String SELECTED_FEATURE_PROPERTY = "selected";
+  public static final String TITLE_FEATURE_PROPERTY = "title";
 
+  private GeoJsonSource geoJsonSource;
+  private FeatureCollection markerCollection;
   private MapboxMap mapboxMap;
   private MapView mapView;
   private boolean initialFont;
@@ -95,11 +102,11 @@ public class SymbolLayerActivity extends AppCompatActivity implements MapboxMap.
     );
 
     // Add a source
-    FeatureCollection markers = FeatureCollection.fromFeatures(new Feature[] {
+    markerCollection = FeatureCollection.fromFeatures(new Feature[] {
       Feature.fromGeometry(Point.fromLngLat(4.91638, 52.35673), featureProperties("Marker 1")),
       Feature.fromGeometry(Point.fromLngLat(4.91638, 52.34673), featureProperties("Marker 2"))
     });
-    mapboxMap.addSource(new GeoJsonSource(MARKER_SOURCE, markers));
+    mapboxMap.addSource(geoJsonSource = new GeoJsonSource(MARKER_SOURCE, markerCollection));
 
     // Add the symbol-layer
     mapboxMap.addLayer(
@@ -108,9 +115,10 @@ public class SymbolLayerActivity extends AppCompatActivity implements MapboxMap.
           iconImage(MARKER_ICON),
           iconIgnorePlacement(true),
           iconAllowOverlap(true),
+          iconSize(switchCase(toBool(get(SELECTED_FEATURE_PROPERTY)), literal(3.0f), literal(1.0f))),
           iconAnchor(Property.ICON_ANCHOR_BOTTOM),
           iconColor(Color.RED),
-          textField(get("title")),
+          textField(get(TITLE_FEATURE_PROPERTY)),
           textFont(new String[] {"DIN Offc Pro Regular", "Arial Unicode MS Regular"}),
           textColor(Color.RED),
           textAllowOverlap(true),
@@ -129,13 +137,15 @@ public class SymbolLayerActivity extends AppCompatActivity implements MapboxMap.
     // Query which features are clicked
     PointF screenLoc = mapboxMap.getProjection().toScreenLocation(point);
     List<Feature> features = mapboxMap.queryRenderedFeatures(screenLoc, MARKER_LAYER);
-
-    SymbolLayer layer = mapboxMap.getLayerAs(MARKER_LAYER);
-    if (features.size() == 0) {
-      // Reset
-      layer.setProperties(iconSize(1f));
-    } else {
-      layer.setProperties(iconSize(3f));
+    if (!features.isEmpty()) {
+      for (Feature feature : markerCollection.features()) {
+        if (feature.getStringProperty(TITLE_FEATURE_PROPERTY)
+          .equals(features.get(0).getStringProperty(TITLE_FEATURE_PROPERTY))) {
+          boolean selected = feature.getBooleanProperty(SELECTED_FEATURE_PROPERTY);
+          feature.addBooleanProperty(SELECTED_FEATURE_PROPERTY, !selected);
+        }
+      }
+      geoJsonSource.setGeoJson(markerCollection);
     }
   }
 
@@ -161,7 +171,8 @@ public class SymbolLayerActivity extends AppCompatActivity implements MapboxMap.
 
   private JsonObject featureProperties(String title) {
     JsonObject object = new JsonObject();
-    object.add("title", new JsonPrimitive(title));
+    object.add(TITLE_FEATURE_PROPERTY, new JsonPrimitive(title));
+    object.add(SELECTED_FEATURE_PROPERTY, new JsonPrimitive(false));
     return object;
   }
 
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