Update dialer sources.

Test: Built package and system image.

This change clobbers the old source, and is an export
from an internal Google repository.

The internal repository was forked form Android in March,
and this change includes modifications since then, to
near the v8 release.

Since the fork, we've moved code from monolithic to independent modules. In addition,
we've switched to Blaze/Bazel as the build sysetm. This export, however, still uses make.

New dependencies have been added:
- Dagger
- Auto-Value
- Glide
- Libshortcutbadger

Going forward, development will still be in Google3, and the Gerrit release
will become an automated export, with the next drop happening in ~ two weeks.

Android.mk includes local modifications from ToT.

Abridged changelog:

Bug fixes
● Not able to mute, add a call when using Phone app in multiwindow mode
● Double tap on keypad triggering multiple key and tones
● Reported spam numbers not showing as spam in the call log
● Crash when user tries to block number while Phone app is not set as default
● Crash when user picks a number from search auto-complete list

Visual Voicemail (VVM) improvements
● Share Voicemail audio via standard exporting mechanisms that support file attachment
(email, MMS, etc.)
● Make phone number, email and web sites in VVM transcript clickable
● Set PIN before declining VVM Terms of Service {Carrier}
● Set client type for outbound visual voicemail SMS {Carrier}

New incoming call and incall UI on older devices
(Android M)
● Updated Phone app icon
● New incall UI (large buttons, button labels)
● New and animated Answer/Reject gestures

Accessibility
● Add custom answer/decline call buttons on answer screen for touch exploration
accessibility services
● Increase size of touch target
● Add verbal feedback when a Voicemail fails to load
● Fix pressing of Phone buttons while in a phone call using Switch Access
● Fix selecting and opening contacts in talkback mode
● Split focus for ‘Learn More’ link in caller id & spam to help distinguish similar text

Other
● Backup & Restore for App Preferences
● Prompt user to enable Wi-Fi calling if the call ends due to out of service and Wi-Fi is
connected
● Rename “Dialpad” to “Keypad”
● Show "Private number" for restricted calls
● Delete unused items (vcard, add contact, call history) from Phone menu

Change-Id: I2a7e53532a24c21bf308bf0a6d178d7ddbca4958

4 files changed, 735 insertions, 0 deletions

diff --git a/java/com/android/dialer/app/widget/ActionBarController.java b/java/com/android/dialer/app/widget/ActionBarController.java
new file mode 100644
index 000000000..7fe056c51
--- /dev/null
+++ b/java/com/android/dialer/app/widget/ActionBarController.java
@@ -0,0 +1,247 @@
+/*
+ * Copyright (C) 2013 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.app.widget;
+
+import android.animation.ValueAnimator;
+import android.animation.ValueAnimator.AnimatorUpdateListener;
+import android.os.Bundle;
+import android.support.annotation.VisibleForTesting;
+import android.util.Log;
+import com.android.dialer.animation.AnimUtils.AnimationCallback;
+import com.android.dialer.app.DialtactsActivity;
+
+/**
+ * Controls the various animated properties of the actionBar: showing/hiding, fading/revealing, and
+ * collapsing/expanding, and assigns suitable properties to the actionBar based on the current state
+ * of the UI.
+ */
+public class ActionBarController {
+
+  public static final boolean DEBUG = DialtactsActivity.DEBUG;
+  public static final String TAG = "ActionBarController";
+  private static final String KEY_IS_SLID_UP = "key_actionbar_is_slid_up";
+  private static final String KEY_IS_FADED_OUT = "key_actionbar_is_faded_out";
+  private static final String KEY_IS_EXPANDED = "key_actionbar_is_expanded";
+
+  private ActivityUi mActivityUi;
+  private SearchEditTextLayout mSearchBox;
+
+  private boolean mIsActionBarSlidUp;
+
+  private final AnimationCallback mFadeOutCallback =
+      new AnimationCallback() {
+        @Override
+        public void onAnimationEnd() {
+          slideActionBar(true /* slideUp */, false /* animate */);
+        }
+
+        @Override
+        public void onAnimationCancel() {
+          slideActionBar(true /* slideUp */, false /* animate */);
+        }
+      };
+
+  public ActionBarController(ActivityUi activityUi, SearchEditTextLayout searchBox) {
+    mActivityUi = activityUi;
+    mSearchBox = searchBox;
+  }
+
+  /** @return Whether or not the action bar is currently showing (both slid down and visible) */
+  public boolean isActionBarShowing() {
+    return !mIsActionBarSlidUp && !mSearchBox.isFadedOut();
+  }
+
+  /** Called when the user has tapped on the collapsed search box, to start a new search query. */
+  public void onSearchBoxTapped() {
+    if (DEBUG) {
+      Log.d(TAG, "OnSearchBoxTapped: isInSearchUi " + mActivityUi.isInSearchUi());
+    }
+    if (!mActivityUi.isInSearchUi()) {
+      mSearchBox.expand(true /* animate */, true /* requestFocus */);
+    }
+  }
+
+  /** Called when search UI has been exited for some reason. */
+  public void onSearchUiExited() {
+    if (DEBUG) {
+      Log.d(
+          TAG,
+          "OnSearchUIExited: isExpanded "
+              + mSearchBox.isExpanded()
+              + " isFadedOut: "
+              + mSearchBox.isFadedOut()
+              + " shouldShowActionBar: "
+              + mActivityUi.shouldShowActionBar());
+    }
+    if (mSearchBox.isExpanded()) {
+      mSearchBox.collapse(true /* animate */);
+    }
+    if (mSearchBox.isFadedOut()) {
+      mSearchBox.fadeIn();
+    }
+
+    if (mActivityUi.shouldShowActionBar()) {
+      slideActionBar(false /* slideUp */, false /* animate */);
+    } else {
+      slideActionBar(true /* slideUp */, false /* animate */);
+    }
+  }
+
+  /**
+   * Called to indicate that the user is trying to hide the dialpad. Should be called before any
+   * state changes have actually occurred.
+   */
+  public void onDialpadDown() {
+    if (DEBUG) {
+      Log.d(
+          TAG,
+          "OnDialpadDown: isInSearchUi "
+              + mActivityUi.isInSearchUi()
+              + " hasSearchQuery: "
+              + mActivityUi.hasSearchQuery()
+              + " isFadedOut: "
+              + mSearchBox.isFadedOut()
+              + " isExpanded: "
+              + mSearchBox.isExpanded());
+    }
+    if (mActivityUi.isInSearchUi()) {
+      if (mActivityUi.hasSearchQuery()) {
+        if (mSearchBox.isFadedOut()) {
+          mSearchBox.setVisible(true);
+        }
+        if (!mSearchBox.isExpanded()) {
+          mSearchBox.expand(false /* animate */, false /* requestFocus */);
+        }
+        slideActionBar(false /* slideUp */, true /* animate */);
+      } else {
+        mSearchBox.fadeIn();
+      }
+    }
+  }
+
+  /**
+   * Called to indicate that the user is trying to show the dialpad. Should be called before any
+   * state changes have actually occurred.
+   */
+  public void onDialpadUp() {
+    if (DEBUG) {
+      Log.d(TAG, "OnDialpadUp: isInSearchUi " + mActivityUi.isInSearchUi());
+    }
+    if (mActivityUi.isInSearchUi()) {
+      slideActionBar(true /* slideUp */, true /* animate */);
+    } else {
+      // From the lists fragment
+      mSearchBox.fadeOut(mFadeOutCallback);
+    }
+  }
+
+  public void slideActionBar(boolean slideUp, boolean animate) {
+    if (DEBUG) {
+      Log.d(TAG, "Sliding actionBar - up: " + slideUp + " animate: " + animate);
+    }
+    if (animate) {
+      ValueAnimator animator = slideUp ? ValueAnimator.ofFloat(0, 1) : ValueAnimator.ofFloat(1, 0);
+      animator.addUpdateListener(
+          new AnimatorUpdateListener() {
+            @Override
+            public void onAnimationUpdate(ValueAnimator animation) {
+              final float value = (float) animation.getAnimatedValue();
+              setHideOffset((int) (mActivityUi.getActionBarHeight() * value));
+            }
+          });
+      animator.start();
+    } else {
+      setHideOffset(slideUp ? mActivityUi.getActionBarHeight() : 0);
+    }
+    mIsActionBarSlidUp = slideUp;
+  }
+
+  public void setAlpha(float alphaValue) {
+    mSearchBox.animate().alpha(alphaValue).start();
+  }
+
+  /** @return The offset the action bar is being translated upwards by */
+  public int getHideOffset() {
+    return mActivityUi.getActionBarHideOffset();
+  }
+
+  public void setHideOffset(int offset) {
+    mIsActionBarSlidUp = offset >= mActivityUi.getActionBarHeight();
+    mActivityUi.setActionBarHideOffset(offset);
+  }
+
+  public int getActionBarHeight() {
+    return mActivityUi.getActionBarHeight();
+  }
+
+  /** Saves the current state of the action bar into a provided {@link Bundle} */
+  public void saveInstanceState(Bundle outState) {
+    outState.putBoolean(KEY_IS_SLID_UP, mIsActionBarSlidUp);
+    outState.putBoolean(KEY_IS_FADED_OUT, mSearchBox.isFadedOut());
+    outState.putBoolean(KEY_IS_EXPANDED, mSearchBox.isExpanded());
+  }
+
+  /** Restores the action bar state from a provided {@link Bundle}. */
+  public void restoreInstanceState(Bundle inState) {
+    mIsActionBarSlidUp = inState.getBoolean(KEY_IS_SLID_UP);
+
+    final boolean isSearchBoxFadedOut = inState.getBoolean(KEY_IS_FADED_OUT);
+    if (isSearchBoxFadedOut) {
+      if (!mSearchBox.isFadedOut()) {
+        mSearchBox.setVisible(false);
+      }
+    } else if (mSearchBox.isFadedOut()) {
+      mSearchBox.setVisible(true);
+    }
+
+    final boolean isSearchBoxExpanded = inState.getBoolean(KEY_IS_EXPANDED);
+    if (isSearchBoxExpanded) {
+      if (!mSearchBox.isExpanded()) {
+        mSearchBox.expand(false, false);
+      }
+    } else if (mSearchBox.isExpanded()) {
+      mSearchBox.collapse(false);
+    }
+  }
+
+  /**
+   * This should be called after onCreateOptionsMenu has been called, when the actionbar has been
+   * laid out and actually has a height.
+   */
+  public void restoreActionBarOffset() {
+    slideActionBar(mIsActionBarSlidUp /* slideUp */, false /* animate */);
+  }
+
+  @VisibleForTesting
+  public boolean getIsActionBarSlidUp() {
+    return mIsActionBarSlidUp;
+  }
+
+  public interface ActivityUi {
+
+    boolean isInSearchUi();
+
+    boolean hasSearchQuery();
+
+    boolean shouldShowActionBar();
+
+    int getActionBarHeight();
+
+    int getActionBarHideOffset();
+
+    void setActionBarHideOffset(int offset);
+  }
+}
diff --git a/java/com/android/dialer/app/widget/DialpadSearchEmptyContentView.java b/java/com/android/dialer/app/widget/DialpadSearchEmptyContentView.java
new file mode 100644
index 000000000..85fd5ec6a
--- /dev/null
+++ b/java/com/android/dialer/app/widget/DialpadSearchEmptyContentView.java
@@ -0,0 +1,43 @@
+/*
+ * 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.dialer.app.widget;
+
+import android.content.Context;
+import android.view.LayoutInflater;
+import android.widget.LinearLayout;
+import com.android.dialer.app.R;
+import com.android.dialer.util.OrientationUtil;
+
+/** Empty content view to be shown when dialpad is visible. */
+public class DialpadSearchEmptyContentView extends EmptyContentView {
+
+  public DialpadSearchEmptyContentView(Context context) {
+    super(context);
+  }
+
+  @Override
+  protected void inflateLayout() {
+    int orientation =
+        OrientationUtil.isLandscape(getContext()) ? LinearLayout.HORIZONTAL : LinearLayout.VERTICAL;
+
+    setOrientation(orientation);
+
+    final LayoutInflater inflater =
+        (LayoutInflater) getContext().getSystemService(Context.LAYOUT_INFLATER_SERVICE);
+    inflater.inflate(R.layout.empty_content_view_dialpad_search, this);
+  }
+}
diff --git a/java/com/android/dialer/app/widget/EmptyContentView.java b/java/com/android/dialer/app/widget/EmptyContentView.java
new file mode 100644
index 000000000..cfc8665a2
--- /dev/null
+++ b/java/com/android/dialer/app/widget/EmptyContentView.java
@@ -0,0 +1,121 @@
+/*
+ * 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.app.widget;
+
+import android.content.Context;
+import android.util.AttributeSet;
+import android.view.LayoutInflater;
+import android.view.View;
+import android.widget.ImageView;
+import android.widget.LinearLayout;
+import android.widget.TextView;
+import com.android.dialer.app.R;
+
+public class EmptyContentView extends LinearLayout implements View.OnClickListener {
+
+  /** Listener to call when action button is clicked. */
+  public interface OnEmptyViewActionButtonClickedListener {
+    void onEmptyViewActionButtonClicked();
+  }
+
+  public static final int NO_LABEL = 0;
+  public static final int NO_IMAGE = 0;
+
+  private ImageView mImageView;
+  private TextView mDescriptionView;
+  private TextView mActionView;
+  private OnEmptyViewActionButtonClickedListener mOnActionButtonClickedListener;
+
+  public EmptyContentView(Context context) {
+    this(context, null);
+  }
+
+  public EmptyContentView(Context context, AttributeSet attrs) {
+    this(context, attrs, 0);
+  }
+
+  public EmptyContentView(Context context, AttributeSet attrs, int defStyleAttr) {
+    this(context, attrs, defStyleAttr, 0);
+  }
+
+  public EmptyContentView(Context context, AttributeSet attrs, int defStyleAttr, int defStyleRes) {
+    super(context, attrs, defStyleAttr, defStyleRes);
+    inflateLayout();
+
+    // Don't let touches fall through the empty view.
+    setClickable(true);
+    mImageView = (ImageView) findViewById(R.id.emptyListViewImage);
+    mDescriptionView = (TextView) findViewById(R.id.emptyListViewMessage);
+    mActionView = (TextView) findViewById(R.id.emptyListViewAction);
+    mActionView.setOnClickListener(this);
+  }
+
+  public void setDescription(int resourceId) {
+    if (resourceId == NO_LABEL) {
+      mDescriptionView.setText(null);
+      mDescriptionView.setVisibility(View.GONE);
+    } else {
+      mDescriptionView.setText(resourceId);
+      mDescriptionView.setVisibility(View.VISIBLE);
+    }
+  }
+
+  public void setImage(int resourceId) {
+    if (resourceId == NO_LABEL) {
+      mImageView.setImageDrawable(null);
+      mImageView.setVisibility(View.GONE);
+    } else {
+      mImageView.setImageResource(resourceId);
+      mImageView.setVisibility(View.VISIBLE);
+    }
+  }
+
+  public void setActionLabel(int resourceId) {
+    if (resourceId == NO_LABEL) {
+      mActionView.setText(null);
+      mActionView.setVisibility(View.GONE);
+    } else {
+      mActionView.setText(resourceId);
+      mActionView.setVisibility(View.VISIBLE);
+    }
+  }
+
+  public boolean isShowingContent() {
+    return mImageView.getVisibility() == View.VISIBLE
+        || mDescriptionView.getVisibility() == View.VISIBLE
+        || mActionView.getVisibility() == View.VISIBLE;
+  }
+
+  public void setActionClickedListener(OnEmptyViewActionButtonClickedListener listener) {
+    mOnActionButtonClickedListener = listener;
+  }
+
+  @Override
+  public void onClick(View v) {
+    if (mOnActionButtonClickedListener != null) {
+      mOnActionButtonClickedListener.onEmptyViewActionButtonClicked();
+    }
+  }
+
+  protected void inflateLayout() {
+    setOrientation(LinearLayout.VERTICAL);
+    final LayoutInflater inflater =
+        (LayoutInflater) getContext().getSystemService(Context.LAYOUT_INFLATER_SERVICE);
+    inflater.inflate(R.layout.empty_content_view, this);
+  }
+
+}
diff --git a/java/com/android/dialer/app/widget/SearchEditTextLayout.java b/java/com/android/dialer/app/widget/SearchEditTextLayout.java
new file mode 100644
index 000000000..be850f9a0
--- /dev/null
+++ b/java/com/android/dialer/app/widget/SearchEditTextLayout.java
@@ -0,0 +1,324 @@
+/*
+ * Copyright (C) 2014 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.app.widget;
+
+import android.animation.ValueAnimator;
+import android.animation.ValueAnimator.AnimatorUpdateListener;
+import android.content.Context;
+import android.text.Editable;
+import android.text.TextUtils;
+import android.text.TextWatcher;
+import android.util.AttributeSet;
+import android.view.KeyEvent;
+import android.view.View;
+import android.widget.EditText;
+import android.widget.FrameLayout;
+import com.android.dialer.animation.AnimUtils;
+import com.android.dialer.app.R;
+import com.android.dialer.util.DialerUtils;
+
+public class SearchEditTextLayout extends FrameLayout {
+
+  private static final float EXPAND_MARGIN_FRACTION_START = 0.8f;
+  private static final int ANIMATION_DURATION = 200;
+  /* Subclass-visible for testing */
+  protected boolean mIsExpanded = false;
+  protected boolean mIsFadedOut = false;
+  private OnKeyListener mPreImeKeyListener;
+  private int mTopMargin;
+  private int mBottomMargin;
+  private int mLeftMargin;
+  private int mRightMargin;
+  private float mCollapsedElevation;
+  private View mCollapsed;
+  private View mExpanded;
+  private EditText mSearchView;
+  private View mSearchIcon;
+  private View mCollapsedSearchBox;
+  private View mVoiceSearchButtonView;
+  private View mOverflowButtonView;
+  private View mBackButtonView;
+  private View mExpandedSearchBox;
+  private View mClearButtonView;
+
+  private ValueAnimator mAnimator;
+
+  private Callback mCallback;
+
+  public SearchEditTextLayout(Context context, AttributeSet attrs) {
+    super(context, attrs);
+  }
+
+  public void setPreImeKeyListener(OnKeyListener listener) {
+    mPreImeKeyListener = listener;
+  }
+
+  public void setCallback(Callback listener) {
+    mCallback = listener;
+  }
+
+  @Override
+  protected void onFinishInflate() {
+    MarginLayoutParams params = (MarginLayoutParams) getLayoutParams();
+    mTopMargin = params.topMargin;
+    mBottomMargin = params.bottomMargin;
+    mLeftMargin = params.leftMargin;
+    mRightMargin = params.rightMargin;
+
+    mCollapsedElevation = getElevation();
+
+    mCollapsed = findViewById(R.id.search_box_collapsed);
+    mExpanded = findViewById(R.id.search_box_expanded);
+    mSearchView = (EditText) mExpanded.findViewById(R.id.search_view);
+
+    mSearchIcon = findViewById(R.id.search_magnifying_glass);
+    mCollapsedSearchBox = findViewById(R.id.search_box_start_search);
+    mVoiceSearchButtonView = findViewById(R.id.voice_search_button);
+    mOverflowButtonView = findViewById(R.id.dialtacts_options_menu_button);
+    mBackButtonView = findViewById(R.id.search_back_button);
+    mExpandedSearchBox = findViewById(R.id.search_box_expanded);
+    mClearButtonView = findViewById(R.id.search_close_button);
+
+    // Convert a long click into a click to expand the search box, and then long click on the
+    // search view. This accelerates the long-press scenario for copy/paste.
+    mCollapsedSearchBox.setOnLongClickListener(
+        new OnLongClickListener() {
+          @Override
+          public boolean onLongClick(View view) {
+            mCollapsedSearchBox.performClick();
+            mSearchView.performLongClick();
+            return false;
+          }
+        });
+
+    mSearchView.setOnFocusChangeListener(
+        new OnFocusChangeListener() {
+          @Override
+          public void onFocusChange(View v, boolean hasFocus) {
+            if (hasFocus) {
+              DialerUtils.showInputMethod(v);
+            } else {
+              DialerUtils.hideInputMethod(v);
+            }
+          }
+        });
+
+    mSearchView.setOnClickListener(
+        new View.OnClickListener() {
+          @Override
+          public void onClick(View v) {
+            if (mCallback != null) {
+              mCallback.onSearchViewClicked();
+            }
+          }
+        });
+
+    mSearchView.addTextChangedListener(
+        new TextWatcher() {
+          @Override
+          public void beforeTextChanged(CharSequence s, int start, int count, int after) {}
+
+          @Override
+          public void onTextChanged(CharSequence s, int start, int before, int count) {
+            mClearButtonView.setVisibility(TextUtils.isEmpty(s) ? View.GONE : View.VISIBLE);
+          }
+
+          @Override
+          public void afterTextChanged(Editable s) {}
+        });
+
+    findViewById(R.id.search_close_button)
+        .setOnClickListener(
+            new OnClickListener() {
+              @Override
+              public void onClick(View v) {
+                mSearchView.setText(null);
+              }
+            });
+
+    findViewById(R.id.search_back_button)
+        .setOnClickListener(
+            new OnClickListener() {
+              @Override
+              public void onClick(View v) {
+                if (mCallback != null) {
+                  mCallback.onBackButtonClicked();
+                }
+              }
+            });
+
+    super.onFinishInflate();
+  }
+
+  @Override
+  public boolean dispatchKeyEventPreIme(KeyEvent event) {
+    if (mPreImeKeyListener != null) {
+      if (mPreImeKeyListener.onKey(this, event.getKeyCode(), event)) {
+        return true;
+      }
+    }
+    return super.dispatchKeyEventPreIme(event);
+  }
+
+  public void fadeOut() {
+    fadeOut(null);
+  }
+
+  public void fadeOut(AnimUtils.AnimationCallback callback) {
+    AnimUtils.fadeOut(this, ANIMATION_DURATION, callback);
+    mIsFadedOut = true;
+  }
+
+  public void fadeIn() {
+    AnimUtils.fadeIn(this, ANIMATION_DURATION);
+    mIsFadedOut = false;
+  }
+
+  public void setVisible(boolean visible) {
+    if (visible) {
+      setAlpha(1);
+      setVisibility(View.VISIBLE);
+      mIsFadedOut = false;
+    } else {
+      setAlpha(0);
+      setVisibility(View.GONE);
+      mIsFadedOut = true;
+    }
+  }
+
+  public void expand(boolean animate, boolean requestFocus) {
+    updateVisibility(true /* isExpand */);
+
+    if (animate) {
+      AnimUtils.crossFadeViews(mExpanded, mCollapsed, ANIMATION_DURATION);
+      mAnimator = ValueAnimator.ofFloat(EXPAND_MARGIN_FRACTION_START, 0f);
+      setMargins(EXPAND_MARGIN_FRACTION_START);
+      prepareAnimator(true);
+    } else {
+      mExpanded.setVisibility(View.VISIBLE);
+      mExpanded.setAlpha(1);
+      setMargins(0f);
+      mCollapsed.setVisibility(View.GONE);
+    }
+
+    // Set 9-patch background. This owns the padding, so we need to restore the original values.
+    int paddingTop = this.getPaddingTop();
+    int paddingStart = this.getPaddingStart();
+    int paddingBottom = this.getPaddingBottom();
+    int paddingEnd = this.getPaddingEnd();
+    setBackgroundResource(R.drawable.search_shadow);
+    setElevation(0);
+    setPaddingRelative(paddingStart, paddingTop, paddingEnd, paddingBottom);
+
+    if (requestFocus) {
+      mSearchView.requestFocus();
+    }
+    mIsExpanded = true;
+  }
+
+  public void collapse(boolean animate) {
+    updateVisibility(false /* isExpand */);
+
+    if (animate) {
+      AnimUtils.crossFadeViews(mCollapsed, mExpanded, ANIMATION_DURATION);
+      mAnimator = ValueAnimator.ofFloat(0f, 1f);
+      prepareAnimator(false);
+    } else {
+      mCollapsed.setVisibility(View.VISIBLE);
+      mCollapsed.setAlpha(1);
+      setMargins(1f);
+      mExpanded.setVisibility(View.GONE);
+    }
+
+    mIsExpanded = false;
+    setElevation(mCollapsedElevation);
+    setBackgroundResource(R.drawable.rounded_corner);
+  }
+
+  /**
+   * Updates the visibility of views depending on whether we will show the expanded or collapsed
+   * search view. This helps prevent some jank with the crossfading if we are animating.
+   *
+   * @param isExpand Whether we are about to show the expanded search box.
+   */
+  private void updateVisibility(boolean isExpand) {
+    int collapsedViewVisibility = isExpand ? View.GONE : View.VISIBLE;
+    int expandedViewVisibility = isExpand ? View.VISIBLE : View.GONE;
+
+    mSearchIcon.setVisibility(collapsedViewVisibility);
+    mCollapsedSearchBox.setVisibility(collapsedViewVisibility);
+    mVoiceSearchButtonView.setVisibility(collapsedViewVisibility);
+    mOverflowButtonView.setVisibility(collapsedViewVisibility);
+    mBackButtonView.setVisibility(expandedViewVisibility);
+    // TODO: Prevents keyboard from jumping up in landscape mode after exiting the
+    // SearchFragment when the query string is empty. More elegant fix?
+    //mExpandedSearchBox.setVisibility(expandedViewVisibility);
+    if (TextUtils.isEmpty(mSearchView.getText())) {
+      mClearButtonView.setVisibility(View.GONE);
+    } else {
+      mClearButtonView.setVisibility(expandedViewVisibility);
+    }
+  }
+
+  private void prepareAnimator(final boolean expand) {
+    if (mAnimator != null) {
+      mAnimator.cancel();
+    }
+
+    mAnimator.addUpdateListener(
+        new AnimatorUpdateListener() {
+          @Override
+          public void onAnimationUpdate(ValueAnimator animation) {
+            final Float fraction = (Float) animation.getAnimatedValue();
+            setMargins(fraction);
+          }
+        });
+
+    mAnimator.setDuration(ANIMATION_DURATION);
+    mAnimator.start();
+  }
+
+  public boolean isExpanded() {
+    return mIsExpanded;
+  }
+
+  public boolean isFadedOut() {
+    return mIsFadedOut;
+  }
+
+  /**
+   * Assigns margins to the search box as a fraction of its maximum margin size
+   *
+   * @param fraction How large the margins should be as a fraction of their full size
+   */
+  private void setMargins(float fraction) {
+    MarginLayoutParams params = (MarginLayoutParams) getLayoutParams();
+    params.topMargin = (int) (mTopMargin * fraction);
+    params.bottomMargin = (int) (mBottomMargin * fraction);
+    params.leftMargin = (int) (mLeftMargin * fraction);
+    params.rightMargin = (int) (mRightMargin * fraction);
+    requestLayout();
+  }
+
+  /** Listener for the back button next to the search view being pressed */
+  public interface Callback {
+
+    void onBackButtonClicked();
+
+    void onSearchViewClicked();
+  }
+}