[android] #5610 - Runtime style api - part 2

1 files changed, 56 insertions, 0 deletions

diff --git a/platform/android/MapboxGLAndroidSDK/src/main/java/com/mapbox/mapboxsdk/style/layers/PropertyValue.java b/platform/android/MapboxGLAndroidSDK/src/main/java/com/mapbox/mapboxsdk/style/layers/PropertyValue.java
new file mode 100644
index 0000000000..204c154743
--- /dev/null
+++ b/platform/android/MapboxGLAndroidSDK/src/main/java/com/mapbox/mapboxsdk/style/layers/PropertyValue.java
@@ -0,0 +1,56 @@
+package com.mapbox.mapboxsdk.style.layers;
+
+import android.support.annotation.Nullable;
+import android.util.Log;
+
+/**
+ * Properties for Layer
+ */
+public class PropertyValue<T> {
+    private static final String TAG = PropertyValue.class.getSimpleName();
+
+    private final Object value;
+
+    /* package */ PropertyValue(Object value) {
+        this.value = value;
+    }
+
+    public boolean isNull() {
+        return value == null;
+    }
+
+    public boolean isFunction() {
+        return !isNull() && value instanceof Function;
+    }
+
+    public boolean isValue() {
+        return !isNull() && !isFunction();
+    }
+
+    @Nullable
+    public Function<T> getFunction() {
+        if (isFunction()) {
+            //noinspection unchecked
+            return (Function<T>) value;
+        } else {
+            Log.w(TAG, "not a function, try value");
+            return null;
+        }
+    }
+
+    @Nullable
+    public T getValue() {
+        if (isValue()) {
+            //noinspection unchecked
+            return (T) value;
+        } else {
+            Log.w(TAG, "not a value, try function");
+            return null;
+        }
+    }
+
+    @Override
+    public String toString() {
+        return String.format("%s (%s)", getClass().getSimpleName(), value != null ? value.getClass().getSimpleName() : null);
+    }
+}