Convert PhysicsFlowLayout to Kotlin

app/src/main/java/com/commit451/gitlab/view/PhysicsFlowLayout.java

-package com.commit451.gitlab.view;
-
-import android.content.Context;
-import android.graphics.Canvas;
-import android.support.annotation.NonNull;
-import android.util.AttributeSet;
-import android.view.MotionEvent;
-
-import com.jawnnypoo.physicslayout.Physics;
-import com.jawnnypoo.physicslayout.PhysicsConfig;
-import com.jawnnypoo.physicslayout.PhysicsLayoutParams;
-import com.jawnnypoo.physicslayout.PhysicsLayoutParamsProcessor;
-import com.wefika.flowlayout.FlowLayout;
-
-/**
- * Typical FrameLayout with some physics added on. Call {@link #getPhysics()} to get the
- * physics component.
- */
-public class PhysicsFlowLayout extends FlowLayout {
-
-    private Physics physics;
-
-    public PhysicsFlowLayout(Context context) {
-        super(context);
-        init(null);
-    }
-
-    public PhysicsFlowLayout(Context context, AttributeSet attrs) {
-        super(context, attrs);
-        init(attrs);
-    }
-
-    public PhysicsFlowLayout(Context context, AttributeSet attrs, int defStyleAttr) {
-        super(context, attrs, defStyleAttr);
-        init(attrs);
-    }
-
-    private void init(AttributeSet attrs) {
-        setWillNotDraw(false);
-        physics = new Physics(this, attrs);
-    }
-
-    @Override
-    protected void onSizeChanged(int w, int h, int oldw, int oldh) {
-        super.onSizeChanged(w, h, oldw, oldh);
-        physics.onSizeChanged(w, h);
-    }
-
-    @Override
-    protected void onLayout(boolean changed, int l, int t, int r, int b) {
-        super.onLayout(changed, l, t, r, b);
-        physics.onLayout(changed);
-    }
-
-    @Override
-    protected void onDraw(Canvas canvas) {
-        super.onDraw(canvas);
-        physics.onDraw(canvas);
-    }
-
-    @Override
-    public boolean onInterceptTouchEvent(MotionEvent ev) {
-        return physics.onInterceptTouchEvent(ev);
-    }
-
-    @Override
-    public boolean onTouchEvent(@NonNull MotionEvent event) {
-        return physics.onTouchEvent(event);
-    }
-
-    @Override
-    public LayoutParams generateLayoutParams(AttributeSet attrs) {
-        return new LayoutParams(getContext(), attrs);
-    }
-
-    public Physics getPhysics() {
-        return physics;
-    }
-
-    private static class LayoutParams extends FlowLayout.LayoutParams implements PhysicsLayoutParams {
-
-        PhysicsConfig config;
-
-        public LayoutParams(Context c, AttributeSet attrs) {
-            super(c, attrs);
-            config = PhysicsLayoutParamsProcessor.process(c, attrs);
-        }
-
-        @Override
-        public PhysicsConfig getConfig() {
-            return config;
-        }
-    }
-}

app/src/main/java/com/commit451/gitlab/view/PhysicsFlowLayout.kt

+package com.commit451.gitlab.view
+
+import android.content.Context
+import android.graphics.Canvas
+import android.util.AttributeSet
+import android.view.MotionEvent
+
+import com.jawnnypoo.physicslayout.Physics
+import com.jawnnypoo.physicslayout.PhysicsConfig
+import com.jawnnypoo.physicslayout.PhysicsLayoutParams
+import com.jawnnypoo.physicslayout.PhysicsLayoutParamsProcessor
+import com.wefika.flowlayout.FlowLayout
+
+/**
+ * Typical FrameLayout with some physics added on. Call [.getPhysics] to get the
+ * physics component.
+ */
+class PhysicsFlowLayout : FlowLayout {
+
+    var physics: Physics? = null
+        private set
+
+    constructor(context: Context) : super(context) {
+        init(null)
+    }
+
+    constructor(context: Context, attrs: AttributeSet) : super(context, attrs) {
+        init(attrs)
+    }
+
+    constructor(context: Context, attrs: AttributeSet, defStyleAttr: Int) : super(context, attrs, defStyleAttr) {
+        init(attrs)
+    }
+
+    private fun init(attrs: AttributeSet?) {
+        setWillNotDraw(false)
+        physics = Physics(this, attrs)
+    }
+
+    override fun onSizeChanged(w: Int, h: Int, oldw: Int, oldh: Int) {
+        super.onSizeChanged(w, h, oldw, oldh)
+        physics!!.onSizeChanged(w, h)
+    }
+
+    override fun onLayout(changed: Boolean, l: Int, t: Int, r: Int, b: Int) {
+        super.onLayout(changed, l, t, r, b)
+        physics!!.onLayout(changed)
+    }
+
+    override fun onDraw(canvas: Canvas) {
+        super.onDraw(canvas)
+        physics!!.onDraw(canvas)
+    }
+
+    override fun onInterceptTouchEvent(ev: MotionEvent): Boolean {
+        return physics!!.onInterceptTouchEvent(ev)
+    }
+
+    override fun onTouchEvent(event: MotionEvent): Boolean {
+        return physics!!.onTouchEvent(event)
+    }
+
+    override fun generateLayoutParams(attrs: AttributeSet?): LayoutParams {
+        return PhysicsFlowLayout.LayoutParams(context, attrs)
+    }
+
+    class LayoutParams(c: Context, attrs: AttributeSet?) : FlowLayout.LayoutParams(c, attrs), PhysicsLayoutParams {
+
+        internal var config: PhysicsConfig = PhysicsLayoutParamsProcessor.process(c, attrs)
+
+        override fun getConfig(): PhysicsConfig {
+            return config
+        }
+    }
+}

build.gradle

@@ -2,7 +2,7 @@
 apply plugin: 'com.github.ben-manes.versions'
 apply plugin: 'com.commit451.updatewrapper'
 buildscript {
-    ext.kotlinVersion = '1.0.6'
+    ext.kotlinVersion = '1.1.0'
     repositories {
         jcenter()
         maven { url "https://jitpack.io" }
@@ -12,7 +12,7 @@ buildscript {
         classpath "org.jetbrains.kotlin:kotlin-gradle-plugin:$kotlinVersion"
         //check with ./gradlew dependencyUpdates
         classpath 'com.github.ben-manes:gradle-versions-plugin:0.14.0'
-        classpath 'com.github.Commit451:updatewrapper:1.0.0'
+        classpath 'com.github.Commit451:updatewrapper:1.1.1'
     }
 }