1 files changed, 142 insertions, 0 deletions
diff --git a/java/com/android/dialer/dialpadview/PseudoEmergencyAnimator.java b/java/com/android/dialer/dialpadview/PseudoEmergencyAnimator.java
new file mode 100644
index 000000000..16bdd24c1
--- /dev/null
+++ b/java/com/android/dialer/dialpadview/PseudoEmergencyAnimator.java
@@ -0,0 +1,142 @@
+/*
+ * Copyright (C) 2015 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.dialer.dialpadview;
+
+import android.animation.Animator;
+import android.animation.Animator.AnimatorListener;
+import android.animation.ArgbEvaluator;
+import android.animation.ValueAnimator;
+import android.content.Context;
+import android.graphics.Color;
+import android.graphics.ColorFilter;
+import android.graphics.LightingColorFilter;
+import android.os.Handler;
+import android.os.Vibrator;
+import android.view.View;
+
+/** Animates the dial button on "emergency" phone numbers. */
+public class PseudoEmergencyAnimator {
+
+  static final String PSEUDO_EMERGENCY_NUMBER = "01189998819991197253";
+  private static final int VIBRATE_LENGTH_MILLIS = 200;
+  private static final int ITERATION_LENGTH_MILLIS = 1000;
+  private static final int ANIMATION_ITERATION_COUNT = 6;
+  private ViewProvider mViewProvider;
+  private ValueAnimator mPseudoEmergencyColorAnimator;
+
+  PseudoEmergencyAnimator(ViewProvider viewProvider) {
+    mViewProvider = viewProvider;
+  }
+
+  public void destroy() {
+    end();
+    mViewProvider = null;
+  }
+
+  public void start() {
+    if (mPseudoEmergencyColorAnimator == null) {
+      Integer colorFrom = Color.BLUE;
+      Integer colorTo = Color.RED;
+      mPseudoEmergencyColorAnimator =
+          ValueAnimator.ofObject(new ArgbEvaluator(), colorFrom, colorTo);
+
+      mPseudoEmergencyColorAnimator.addUpdateListener(
+          animator -> {
+            try {
+              int color = (int) animator.getAnimatedValue();
+              ColorFilter colorFilter = new LightingColorFilter(Color.BLACK, color);
+
+              if (mViewProvider.getFab() != null) {
+                mViewProvider.getFab().getBackground().setColorFilter(colorFilter);
+              }
+            } catch (Exception e) {
+              animator.cancel();
+            }
+          });
+
+      mPseudoEmergencyColorAnimator.addListener(
+          new AnimatorListener() {
+            @Override
+            public void onAnimationCancel(Animator animation) {}
+
+            @Override
+            public void onAnimationRepeat(Animator animation) {
+              try {
+                vibrate(VIBRATE_LENGTH_MILLIS);
+              } catch (Exception e) {
+                animation.cancel();
+              }
+            }
+
+            @Override
+            public void onAnimationStart(Animator animation) {}
+
+            @Override
+            public void onAnimationEnd(Animator animation) {
+              try {
+                if (mViewProvider.getFab() != null) {
+                  mViewProvider.getFab().getBackground().clearColorFilter();
+                }
+
+                new Handler()
+                    .postDelayed(
+                        () -> {
+                          try {
+                            vibrate(VIBRATE_LENGTH_MILLIS);
+                          } catch (Exception e) {
+                            // ignored
+                          }
+                        },
+                        ITERATION_LENGTH_MILLIS);
+              } catch (Exception e) {
+                animation.cancel();
+              }
+            }
+          });
+
+      mPseudoEmergencyColorAnimator.setDuration(VIBRATE_LENGTH_MILLIS);
+      mPseudoEmergencyColorAnimator.setRepeatMode(ValueAnimator.REVERSE);
+      mPseudoEmergencyColorAnimator.setRepeatCount(ANIMATION_ITERATION_COUNT);
+    }
+    if (!mPseudoEmergencyColorAnimator.isStarted()) {
+      mPseudoEmergencyColorAnimator.start();
+    }
+  }
+
+  public void end() {
+    if (mPseudoEmergencyColorAnimator != null && mPseudoEmergencyColorAnimator.isStarted()) {
+      mPseudoEmergencyColorAnimator.end();
+    }
+  }
+
+  private void vibrate(long milliseconds) {
+    Context context = mViewProvider.getContext();
+    if (context != null) {
+      Vibrator vibrator = (Vibrator) context.getSystemService(Context.VIBRATOR_SERVICE);
+      if (vibrator != null) {
+        vibrator.vibrate(milliseconds);
+      }
+    }
+  }
+
+  interface ViewProvider {
+
+    View getFab();
+
+    Context getContext();
+  }
+}