[Slider] Move static inner classes outside base slider class

Resolves #1342

Resolves #1471

PiperOrigin-RevId: 320607441
(cherry picked from commit 34f621d)

catalog/java/io/material/catalog/slider/SliderDiscreteDemoFragment.java

@@ -16,16 +16,17 @@
 
 package io.material.catalog.slider;
 
-import io.material.catalog.R;
-
 import android.os.Bundle;
-import androidx.annotation.IdRes;
-import androidx.annotation.Nullable;
-import androidx.appcompat.widget.SwitchCompat;
 import android.view.LayoutInflater;
 import android.view.View;
 import android.view.ViewGroup;
+import androidx.annotation.IdRes;
+import androidx.annotation.Nullable;
+import androidx.appcompat.widget.SwitchCompat;
+import com.google.android.material.slider.BasicLabelFormatter;
+import com.google.android.material.slider.LabelFormatter;
 import com.google.android.material.slider.Slider;
+import io.material.catalog.R;
 import io.material.catalog.feature.DemoFragment;
 
 /**
@@ -44,14 +45,14 @@ public View onCreateDemoView(
     setUpSlider(view, R.id.switch_button_1, R.id.slider_1, null);
     setUpSlider(view, R.id.switch_button_2, R.id.slider_2, null);
     setUpSlider(view, R.id.switch_button_3, R.id.slider_3, null);
-    setUpSlider(view, R.id.switch_button_4, R.id.slider_4, new Slider.BasicLabelFormatter());
+    setUpSlider(view, R.id.switch_button_4, R.id.slider_4, new BasicLabelFormatter());
     setUpSlider(view, R.id.switch_button_5, R.id.slider_5, null);
 
     return view;
   }
 
   private void setUpSlider(
-      View view, @IdRes int switchId, @IdRes int sliderId, Slider.LabelFormatter labelFormatter) {
+      View view, @IdRes int switchId, @IdRes int sliderId, LabelFormatter labelFormatter) {
     final Slider slider = view.findViewById(sliderId);
     slider.setLabelFormatter(labelFormatter);
     SwitchCompat switchButton = view.findViewById(switchId);

lib/java/com/google/android/material/slider/BaseSlider.java

@@ -20,6 +20,9 @@
 
 import static androidx.core.view.accessibility.AccessibilityNodeInfoCompat.RangeInfoCompat.RANGE_TYPE_FLOAT;
 import static androidx.core.math.MathUtils.clamp;
+import static com.google.android.material.slider.LabelFormatter.LABEL_FLOATING;
+import static com.google.android.material.slider.LabelFormatter.LABEL_GONE;
+import static com.google.android.material.slider.LabelFormatter.LABEL_WITHIN_BOUNDS;
 import static com.google.android.material.theme.overlay.MaterialThemeOverlay.wrap;
 import static java.lang.Float.compare;
 import static java.lang.Math.abs;
@@ -83,7 +86,6 @@
 import java.util.Collections;
 import java.util.Iterator;
 import java.util.List;
-import java.util.Locale;
 
 /**
  * The slider can function either as a continuous slider, or as a discrete slider. The mode of
@@ -252,9 +254,6 @@ private interface TooltipDrawableFactory {
 
   @NonNull private final MaterialShapeDrawable thumbDrawable = new MaterialShapeDrawable();
 
-  public static final int LABEL_FLOATING = 0;
-  public static final int LABEL_WITHIN_BOUNDS = 1;
-  public static final int LABEL_GONE = 2;
   private float touchPosition;
 
   /**
@@ -272,45 +271,7 @@ private interface TooltipDrawableFactory {
    */
   @IntDef({LABEL_FLOATING, LABEL_WITHIN_BOUNDS, LABEL_GONE})
   @Retention(RetentionPolicy.SOURCE)
-  public @interface LabelBehavior {}
-
-  /**
-   * Interface definition for applying custom formatting to the text displayed inside the bubble
-   * shown when a slider is used in discrete mode.
-   */
-  public interface LabelFormatter {
-    @NonNull
-    String getFormattedValue(float value);
-  }
-
-  /**
-   * A simple implementation of the {@link LabelFormatter} interface, that limits the number
-   * displayed inside a discrete slider's bubble to three digits, and a single-character suffix that
-   * denotes magnitude (e.g.: 1.5K, 2.2M, 1.3B, 2T).
-   */
-  public static final class BasicLabelFormatter implements LabelFormatter {
-
-    private static final long TRILLION = 1000000000000L;
-    private static final int BILLION = 1000000000;
-    private static final int MILLION = 1000000;
-    private static final int THOUSAND = 1000;
-
-    @NonNull
-    @Override
-    public String getFormattedValue(float value) {
-      if (value >= TRILLION) {
-        return String.format(Locale.US, "%.1fT", value / TRILLION);
-      } else if (value >= BILLION) {
-        return String.format(Locale.US, "%.1fB", value / BILLION);
-      } else if (value >= MILLION) {
-        return String.format(Locale.US, "%.1fM", value / MILLION);
-      } else if (value >= THOUSAND) {
-        return String.format(Locale.US, "%.1fK", value / THOUSAND);
-      }
-
-      return String.format(Locale.US, "%.0f", value);
-    }
-  }
+  @interface LabelBehavior {}
 
   public BaseSlider(@NonNull Context context) {
     this(context, null);

lib/java/com/google/android/material/slider/BasicLabelFormatter.java

@@ -0,0 +1,49 @@
+/*
+ * Copyright 2020 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
+ *
+ *     https://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.google.android.material.slider;
+
+import androidx.annotation.NonNull;
+import java.util.Locale;
+
+/**
+ * A simple implementation of the {@link LabelFormatter} interface, that limits the number
+ * displayed inside a discrete slider's bubble to three digits, and a single-character suffix that
+ * denotes magnitude (e.g.: 1.5K, 2.2M, 1.3B, 2T).
+ */
+public final class BasicLabelFormatter implements LabelFormatter {
+
+  private static final long TRILLION = 1000000000000L;
+  private static final int BILLION = 1000000000;
+  private static final int MILLION = 1000000;
+  private static final int THOUSAND = 1000;
+
+  @NonNull
+  @Override
+  public String getFormattedValue(float value) {
+    if (value >= TRILLION) {
+      return String.format(Locale.US, "%.1fT", value / TRILLION);
+    } else if (value >= BILLION) {
+      return String.format(Locale.US, "%.1fB", value / BILLION);
+    } else if (value >= MILLION) {
+      return String.format(Locale.US, "%.1fM", value / MILLION);
+    } else if (value >= THOUSAND) {
+      return String.format(Locale.US, "%.1fK", value / THOUSAND);
+    }
+
+    return String.format(Locale.US, "%.0f", value);
+  }
+}

lib/java/com/google/android/material/slider/LabelFormatter.java

@@ -0,0 +1,33 @@
+/*
+ * Copyright 2020 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
+ *
+ *     https://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.google.android.material.slider;
+
+import androidx.annotation.NonNull;
+
+/**
+ * Interface definition for applying custom formatting to the text displayed inside the bubble
+ * shown when a slider is used in discrete mode.
+ */
+public interface LabelFormatter {
+
+  int LABEL_FLOATING = 0;
+  int LABEL_WITHIN_BOUNDS = 1;
+  int LABEL_GONE = 2;
+
+  @NonNull
+  String getFormattedValue(float value);
+}