1 files changed, 0 insertions, 119 deletions
diff --git a/src/com/android/launcher3/util/MultiStateAlphaController.java b/src/com/android/launcher3/util/MultiStateAlphaController.java
deleted file mode 100644
index 956fc9eba..000000000
--- a/src/com/android/launcher3/util/MultiStateAlphaController.java
+++ /dev/null
@@ -1,119 +0,0 @@
-/*
- * Copyright (C) 2016 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.launcher3.util;
-
-import android.animation.Animator;
-import android.animation.AnimatorListenerAdapter;
-import android.animation.ValueAnimator;
-import android.animation.ValueAnimator.AnimatorUpdateListener;
-import android.content.Context;
-import android.view.View;
-import android.view.accessibility.AccessibilityManager;
-
-import java.util.Arrays;
-
-/**
- * A utility class which divides the alpha for a view across multiple states.
- */
-public class MultiStateAlphaController {
-
-    private final View mTargetView;
-    private final float[] mAlphas;
-    private final AccessibilityManager mAm;
-    private int mZeroAlphaListenerCount = 0;
-
-    public MultiStateAlphaController(View view, int stateCount) {
-        mTargetView = view;
-        mAlphas = new float[stateCount];
-        Arrays.fill(mAlphas, 1);
-
-        mAm = (AccessibilityManager) view.getContext().getSystemService(Context.ACCESSIBILITY_SERVICE);
-    }
-
-    public void setAlphaAtIndex(float alpha, int index) {
-        mAlphas[index] = alpha;
-        updateAlpha();
-    }
-
-    private void updateAlpha() {
-        // Only update the alpha if no zero-alpha animation is running.
-        if (mZeroAlphaListenerCount > 0) {
-            return;
-        }
-        float finalAlpha = 1;
-        for (float a : mAlphas) {
-            finalAlpha = finalAlpha * a;
-        }
-        mTargetView.setAlpha(finalAlpha);
-        mTargetView.setVisibility(finalAlpha > 0 ? View.VISIBLE
-                : (mAm.isEnabled() ? View.GONE : View.INVISIBLE));
-    }
-
-    /**
-     * Returns an animator which changes the alpha at the index {@param index}
-     * to {@param finalAlpha}. Alphas at other index are not affected.
-     */
-    public Animator animateAlphaAtIndex(float finalAlpha, final int index) {
-        final ValueAnimator anim;
-
-        if (Float.compare(finalAlpha, mAlphas[index]) == 0) {
-            // Return a dummy animator to avoid null checks.
-            anim = ValueAnimator.ofFloat(0, 0);
-        } else {
-            ValueAnimator animator = ValueAnimator.ofFloat(mAlphas[index], finalAlpha);
-            animator.addUpdateListener(new AnimatorUpdateListener() {
-                @Override
-                public void onAnimationUpdate(ValueAnimator valueAnimator) {
-                    float value = (Float) valueAnimator.getAnimatedValue();
-                    setAlphaAtIndex(value, index);
-                }
-            });
-            anim = animator;
-        }
-
-        if (Float.compare(finalAlpha, 0f) == 0) {
-            // In case when any channel is animating to 0, and the current alpha is also 0, do not
-            // update alpha of the target view while the animation is running.
-            // We special case '0' because if any channel is set to 0, values of other
-            // channels do not matter.
-            anim.addListener(new ZeroAlphaAnimatorListener());
-        }
-        return anim;
-    }
-
-    private class ZeroAlphaAnimatorListener extends AnimatorListenerAdapter {
-
-        private boolean mStartedAtZero = false;
-
-        @Override
-        public void onAnimationStart(Animator animation) {
-            mStartedAtZero = Float.compare(mTargetView.getAlpha(), 0f) == 0;
-            if (mStartedAtZero) {
-                mZeroAlphaListenerCount++;
-                mTargetView.setAlpha(0);
-            }
-        }
-
-        @Override
-        public void onAnimationEnd(Animator animation) {
-            if (mStartedAtZero) {
-                mZeroAlphaListenerCount--;
-                updateAlpha();
-            }
-        }
-    }
-}