1 files changed, 65 insertions, 0 deletions
diff --git a/RotaryPlayground/src/com/android/car/rotaryplayground/CustomButton.java b/RotaryPlayground/src/com/android/car/rotaryplayground/CustomButton.java
new file mode 100644
index 0000000..924908f
--- /dev/null
+++ b/RotaryPlayground/src/com/android/car/rotaryplayground/CustomButton.java
@@ -0,0 +1,65 @@
+/*
+ * Copyright (C) 2021 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package com.android.car.rotaryplayground;
+
+import android.content.Context;
+import android.util.AttributeSet;
+import android.widget.Button;
+
+import androidx.annotation.Nullable;
+
+public class CustomButton extends Button {
+
+    private static final int[] STATE_ROTARY_ENABLED = {R.attr.state_rotary_enabled};
+
+    private boolean mRotaryEnabled = true;
+
+    public CustomButton(Context context) {
+        super(context);
+    }
+
+    public CustomButton(Context context, @Nullable AttributeSet attrs) {
+        super(context, attrs);
+    }
+
+    public CustomButton(Context context, @Nullable AttributeSet attrs, int defStyleAttr) {
+        super(context, attrs, defStyleAttr);
+    }
+
+    public CustomButton(Context context, @Nullable AttributeSet attrs, int defStyleAttr,
+            int defStyleRes) {
+        super(context, attrs, defStyleAttr, defStyleRes);
+    }
+
+    public void setRotaryEnabled(boolean enabled) {
+        mRotaryEnabled = enabled;
+        refreshDrawableState();
+    }
+
+    public boolean isRotaryEnabled() {
+        return mRotaryEnabled;
+    }
+
+    @Override
+    protected int[] onCreateDrawableState(int extraSpace) {
+        final int[] drawableState = super.onCreateDrawableState(extraSpace + 1);
+        if (mRotaryEnabled) {
+            mergeDrawableStates(drawableState, STATE_ROTARY_ENABLED);
+        }
+        return drawableState;
+    }
+}