[android] #5610 - Initial Runtime Style Bindings

[android] #5610 - Adjusted public api after discussion

[android] #5610 - added jni binding for NativeMapView#getLayer

[android] #5610 - Added initial test Activity

[android] #5610 - Started on NativePeer implementation for Layer

[android] #5610 - replaced low-level jni code with high-level for native getLayer

[android] 5610 - completed basic layer peer class - constructible from java and c++

[android] #5610 - removed reference that was redundant and causing the finalizer exception

[android] #5610 - Added a property peer

[android] #5610 - added value type to do type conversions - wip

[android] #5610 - simplified property conversion approach - wrapped value with jenv

[android] #5610 - added some more value conversions

[android] #5610 - Finished conversion for basic types

[android] #5610 - allow color's to be set as either an android color int or a String to support all formats in the spec

[android] #5610 - encode color ints as rgba to retain alpha channel

[android] #5610 - recalculate classes after paint property

[android] #5610 - more examples

[android] #5610 - fixed the example

[android] #5610 - cleaned up example code before continueing

[android] #5610 - added layout property example

[android] #5610 - set visibility on layer

[android] #5610 - added removeLayer and example

[android] #5610 - added more type conversions

[android] #5610 - Started on peer classes for layer implementations - WIP

[android] #5610 - First complete layer subclass peer implementation

[android] #5610 - added a little bit of structure before adding the other layer types

[android] #5610 - generate the c++ headers from the style spec

[android] #5610 - make sure the visibility is set as a string

[android] #5610 - Generate c++ layer peer class implementations from the style spec

[android] #5610 - generate java layer peer classes

[android] #5610 - cleanup comments

[android] #5610 - register all c++ peer classes with jni

[android] #5610 - addLayer

[android] #5610 - comment out broken case

[android] #5610 - Sources api - very much WIP

[android] 5610 - GeoJson source implementation and geojson conversion

[android] #5610 - cleanup add source/layer example a bit

[android] #5610 - initial filter api

[android] #5610 - Added filter api on the relevant Layer classes

[android] #5610 - raster layer is not filterable

[android] #5610 - actually make it compile

[android] #5610 - completed filter implementation

[android] #5610 - Vector and Raster Source + examples

[android] #5610 - removed superfluous interface, moved filters to the correct package

[android] #5610 - fixed comments

[android] #5610 - moved tests to the right package

[android] #5610 - hide difference between paint and layout properties in public api, make more performant set method for proeprties

[android] #5610 - fix rebase issue

1 files changed, 115 insertions, 0 deletions

diff --git a/platform/android/MapboxGLAndroidSDK/src/main/java/com/mapbox/mapboxsdk/style/layers/Filter.java b/platform/android/MapboxGLAndroidSDK/src/main/java/com/mapbox/mapboxsdk/style/layers/Filter.java
new file mode 100644
index 0000000000..04da4da0cb
--- /dev/null
+++ b/platform/android/MapboxGLAndroidSDK/src/main/java/com/mapbox/mapboxsdk/style/layers/Filter.java
@@ -0,0 +1,115 @@
+package com.mapbox.mapboxsdk.style.layers;
+
+import java.util.ArrayList;
+import java.util.Arrays;
+
+/**
+ * Utility to build filter expressions more easily:
+ *
+ * @see <a href="https://www.mapbox.com/mapbox-gl-style-spec/#types-filter">Style spec</a>
+ */
+public class Filter {
+
+    public abstract static class Statement {
+        protected final String operator;
+
+        public Statement(String operator) {
+            this.operator = operator;
+        }
+
+        public abstract Object[] toArray();
+    }
+
+    public static class SimpleStatement extends Statement {
+        private final String key;
+        private final Object[] values;
+
+        public SimpleStatement(String operator, String key, Object... values) {
+            super(operator);
+            this.key = key;
+            this.values = values;
+        }
+
+
+        @Override
+        public Object[] toArray() {
+            ArrayList<Object> array = new ArrayList<>(2 + values.length);
+            array.add(operator);
+            array.add(key);
+            array.addAll(Arrays.asList(values));
+            return array.toArray();
+        }
+    }
+
+    public static class CompoundStatement extends Statement {
+        private final Statement[] statements;
+
+        public CompoundStatement(String operator, Statement... statements) {
+            super(operator);
+            this.statements = statements;
+        }
+
+        @Override
+        public Object[] toArray() {
+            ArrayList<Object> array = new ArrayList<>(1 + statements.length);
+            array.add(operator);
+            for (Statement statement : statements) {
+                array.add(statement.toArray());
+            }
+            return array.toArray();
+        }
+    }
+
+    public static Statement all(Statement... statements) {
+        return new CompoundStatement("all", statements);
+    }
+
+    public static Statement any(Statement... statements) {
+        return new CompoundStatement("any", statements);
+    }
+
+    public static Statement none(Statement... statements) {
+        return new CompoundStatement("none", statements);
+    }
+
+    public static Statement has(String key) {
+        return new SimpleStatement("has", key);
+    }
+
+    public static Statement notHas(String key) {
+        return new SimpleStatement("!has", key);
+    }
+
+    public static Statement eq(String key, Object value) {
+        return new SimpleStatement("==", key, value);
+    }
+
+    public static Statement neq(String key, Object value) {
+        return new SimpleStatement("!=", key, value);
+    }
+
+    public static Statement gt(String key, Object value) {
+        return new SimpleStatement(">", key, value);
+    }
+
+    public static Statement gte(String key, Object value) {
+        return new SimpleStatement(">=", key, value);
+    }
+
+    public static Statement lt(String key, Object value) {
+        return new SimpleStatement("<", key, value);
+    }
+
+    public static Statement lte(String key, Object value) {
+        return new SimpleStatement("<=", key, value);
+    }
+
+    public static Statement in(String key, Object... values) {
+        return new SimpleStatement("in", key, values);
+    }
+
+    public static Statement notIn(String key, Object... values) {
+        return new SimpleStatement("!in", key, values);
+    }
+
+}