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

1 files changed, 756 insertions, 0 deletions

diff --git a/java/com/android/incallui/InCallActivity.java b/java/com/android/incallui/InCallActivity.java
new file mode 100644
index 000000000..307415916
--- /dev/null
+++ b/java/com/android/incallui/InCallActivity.java
@@ -0,0 +1,756 @@
+/*
+ * 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.incallui;
+
+import android.content.Context;
+import android.content.Intent;
+import android.graphics.drawable.GradientDrawable;
+import android.graphics.drawable.GradientDrawable.Orientation;
+import android.os.Bundle;
+import android.support.annotation.ColorInt;
+import android.support.annotation.FloatRange;
+import android.support.annotation.Nullable;
+import android.support.v4.app.FragmentManager;
+import android.support.v4.app.FragmentTransaction;
+import android.support.v4.graphics.ColorUtils;
+import android.telecom.DisconnectCause;
+import android.view.KeyEvent;
+import android.view.MenuItem;
+import android.view.MotionEvent;
+import android.view.View;
+import com.android.dialer.common.LogUtil;
+import com.android.dialer.compat.ActivityCompat;
+import com.android.dialer.logging.Logger;
+import com.android.dialer.logging.nano.ScreenEvent;
+import com.android.incallui.answer.bindings.AnswerBindings;
+import com.android.incallui.answer.protocol.AnswerScreen;
+import com.android.incallui.answer.protocol.AnswerScreenDelegate;
+import com.android.incallui.answer.protocol.AnswerScreenDelegateFactory;
+import com.android.incallui.answerproximitysensor.PseudoScreenState;
+import com.android.incallui.call.CallList;
+import com.android.incallui.call.DialerCall;
+import com.android.incallui.call.DialerCall.State;
+import com.android.incallui.call.VideoUtils;
+import com.android.incallui.incall.bindings.InCallBindings;
+import com.android.incallui.incall.protocol.InCallButtonUiDelegate;
+import com.android.incallui.incall.protocol.InCallButtonUiDelegateFactory;
+import com.android.incallui.incall.protocol.InCallScreen;
+import com.android.incallui.incall.protocol.InCallScreenDelegate;
+import com.android.incallui.incall.protocol.InCallScreenDelegateFactory;
+import com.android.incallui.video.bindings.VideoBindings;
+import com.android.incallui.video.protocol.VideoCallScreen;
+import com.android.incallui.video.protocol.VideoCallScreenDelegate;
+import com.android.incallui.video.protocol.VideoCallScreenDelegateFactory;
+
+/** Version of {@link InCallActivity} that shows the new UI */
+public class InCallActivity extends TransactionSafeFragmentActivity
+    implements AnswerScreenDelegateFactory,
+        InCallScreenDelegateFactory,
+        InCallButtonUiDelegateFactory,
+        VideoCallScreenDelegateFactory,
+        PseudoScreenState.StateChangedListener {
+
+  private static final String TAG_IN_CALL_SCREEN = "tag_in_call_screen";
+  private static final String TAG_ANSWER_SCREEN = "tag_answer_screen";
+  private static final String TAG_VIDEO_CALL_SCREEN = "tag_video_call_screen";
+
+  private static final String DID_SHOW_ANSWER_SCREEN_KEY = "did_show_answer_screen";
+  private static final String DID_SHOW_IN_CALL_SCREEN_KEY = "did_show_in_call_screen";
+  private static final String DID_SHOW_VIDEO_CALL_SCREEN_KEY = "did_show_video_call_screen";
+
+  private final InCallActivityCommon common;
+  private boolean didShowAnswerScreen;
+  private boolean didShowInCallScreen;
+  private boolean didShowVideoCallScreen;
+  private int[] backgroundDrawableColors;
+  private GradientDrawable backgroundDrawable;
+  private boolean isVisible;
+  private View pseudoBlackScreenOverlay;
+  private boolean touchDownWhenPseudoScreenOff;
+  private boolean isInShowMainInCallFragment;
+  private boolean needDismissPendingDialogs;
+
+  public InCallActivity() {
+    common = new InCallActivityCommon(this);
+  }
+
+  public static Intent getIntent(
+      Context context,
+      boolean showDialpad,
+      boolean newOutgoingCall,
+      boolean isVideoCall,
+      boolean isForFullScreen) {
+    Intent intent = new Intent(Intent.ACTION_MAIN, null);
+    intent.setFlags(Intent.FLAG_ACTIVITY_NO_USER_ACTION | Intent.FLAG_ACTIVITY_NEW_TASK);
+    intent.setClass(context, InCallActivity.class);
+    InCallActivityCommon.setIntentExtras(intent, showDialpad, newOutgoingCall, isForFullScreen);
+    return intent;
+  }
+
+  @Override
+  protected void onResumeFragments() {
+    super.onResumeFragments();
+    if (needDismissPendingDialogs) {
+      dismissPendingDialogs();
+    }
+  }
+
+  @Override
+  protected void onCreate(Bundle icicle) {
+    LogUtil.i("InCallActivity.onCreate", "");
+    super.onCreate(icicle);
+
+    if (icicle != null) {
+      didShowAnswerScreen = icicle.getBoolean(DID_SHOW_ANSWER_SCREEN_KEY);
+      didShowInCallScreen = icicle.getBoolean(DID_SHOW_IN_CALL_SCREEN_KEY);
+      didShowVideoCallScreen = icicle.getBoolean(DID_SHOW_VIDEO_CALL_SCREEN_KEY);
+    }
+
+    common.onCreate(icicle);
+
+    getWindow()
+        .getDecorView()
+        .setSystemUiVisibility(
+            View.SYSTEM_UI_FLAG_LAYOUT_FULLSCREEN | View.SYSTEM_UI_FLAG_LAYOUT_HIDE_NAVIGATION);
+
+    pseudoBlackScreenOverlay = findViewById(R.id.psuedo_black_screen_overlay);
+  }
+
+  @Override
+  protected void onSaveInstanceState(Bundle out) {
+    LogUtil.i("InCallActivity.onSaveInstanceState", "");
+    common.onSaveInstanceState(out);
+    out.putBoolean(DID_SHOW_ANSWER_SCREEN_KEY, didShowAnswerScreen);
+    out.putBoolean(DID_SHOW_IN_CALL_SCREEN_KEY, didShowInCallScreen);
+    out.putBoolean(DID_SHOW_VIDEO_CALL_SCREEN_KEY, didShowVideoCallScreen);
+    super.onSaveInstanceState(out);
+    isVisible = false;
+  }
+
+  @Override
+  protected void onStart() {
+    LogUtil.i("InCallActivity.onStart", "");
+    super.onStart();
+    isVisible = true;
+    showMainInCallFragment();
+    common.onStart();
+    if (ActivityCompat.isInMultiWindowMode(this)
+        && !getResources().getBoolean(R.bool.incall_dialpad_allowed)) {
+      // Hide the dialpad because there may not be enough room
+      showDialpadFragment(false, false);
+    }
+  }
+
+  @Override
+  protected void onResume() {
+    LogUtil.i("InCallActivity.onResume", "");
+    super.onResume();
+    common.onResume();
+    PseudoScreenState pseudoScreenState = InCallPresenter.getInstance().getPseudoScreenState();
+    pseudoScreenState.addListener(this);
+    onPseudoScreenStateChanged(pseudoScreenState.isOn());
+  }
+
+  /** onPause is guaranteed to be called when the InCallActivity goes in the background. */
+  @Override
+  protected void onPause() {
+    LogUtil.i("InCallActivity.onPause", "");
+    super.onPause();
+    common.onPause();
+    InCallPresenter.getInstance().getPseudoScreenState().removeListener(this);
+  }
+
+  @Override
+  protected void onStop() {
+    LogUtil.i("InCallActivity.onStop", "");
+    super.onStop();
+    common.onStop();
+    isVisible = false;
+  }
+
+  @Override
+  protected void onDestroy() {
+    LogUtil.i("InCallActivity.onDestroy", "");
+    super.onDestroy();
+    common.onDestroy();
+  }
+
+  @Override
+  public void finish() {
+    if (shouldCloseActivityOnFinish()) {
+      super.finish();
+    }
+  }
+
+  private boolean shouldCloseActivityOnFinish() {
+    if (!isVisible()) {
+      LogUtil.i(
+          "InCallActivity.shouldCloseActivityOnFinish",
+          "allowing activity to be closed because it's not visible");
+      return true;
+    }
+
+    if (common.hasPendingDialogs()) {
+      LogUtil.i(
+          "InCallActivity.shouldCloseActivityOnFinish", "dialog is visible, not closing activity");
+      return false;
+    }
+
+    AnswerScreen answerScreen = getAnswerScreen();
+    if (answerScreen != null && answerScreen.hasPendingDialogs()) {
+      LogUtil.i(
+          "InCallActivity.shouldCloseActivityOnFinish",
+          "answer screen dialog is visible, not closing activity");
+      return false;
+    }
+
+    LogUtil.i(
+        "InCallActivity.shouldCloseActivityOnFinish",
+        "activity is visible and has no dialogs, allowing activity to close");
+    return true;
+  }
+
+  @Override
+  protected void onNewIntent(Intent intent) {
+    LogUtil.i("InCallActivity.onNewIntent", "");
+    common.onNewIntent(intent);
+
+    // If the screen is off, we need to make sure it gets turned on for incoming calls.
+    // This normally works just fine thanks to FLAG_TURN_SCREEN_ON but that only works
+    // when the activity is first created. Therefore, to ensure the screen is turned on
+    // for the call waiting case, we recreate() the current activity. There should be no jank from
+    // this since the screen is already off and will remain so until our new activity is up.
+    if (!isVisible()) {
+      LogUtil.i("InCallActivity.onNewIntent", "Restarting InCallActivity to force screen on.");
+      recreate();
+    }
+  }
+
+  @Override
+  public void onBackPressed() {
+    LogUtil.i("InCallActivity.onBackPressed", "");
+    if (!common.onBackPressed(didShowInCallScreen || didShowVideoCallScreen)) {
+      super.onBackPressed();
+    }
+  }
+
+  @Override
+  public boolean onOptionsItemSelected(MenuItem item) {
+    LogUtil.i("InCallActivity.onOptionsItemSelected", "item: " + item);
+    if (item.getItemId() == android.R.id.home) {
+      onBackPressed();
+      return true;
+    }
+    return super.onOptionsItemSelected(item);
+  }
+
+  @Override
+  public boolean onKeyUp(int keyCode, KeyEvent event) {
+    if (common.onKeyUp(keyCode, event)) {
+      return true;
+    }
+    return super.onKeyUp(keyCode, event);
+  }
+
+  @Override
+  public boolean onKeyDown(int keyCode, KeyEvent event) {
+    if (common.onKeyDown(keyCode, event)) {
+      return true;
+    }
+    return super.onKeyDown(keyCode, event);
+  }
+
+  public boolean isInCallScreenAnimating() {
+    return false;
+  }
+
+  public void showConferenceFragment(boolean show) {
+    if (show) {
+      startActivity(new Intent(this, ManageConferenceActivity.class));
+    }
+  }
+
+  public boolean showDialpadFragment(boolean show, boolean animate) {
+    boolean didChange = common.showDialpadFragment(show, animate);
+    if (didChange) {
+      // Note:  onInCallScreenDialpadVisibilityChange is called here to ensure that the dialpad FAB
+      // repositions itself.
+      getInCallScreen().onInCallScreenDialpadVisibilityChange(show);
+    }
+    return didChange;
+  }
+
+  public boolean isDialpadVisible() {
+    return common.isDialpadVisible();
+  }
+
+  public void onForegroundCallChanged(DialerCall newForegroundCall) {
+    common.updateTaskDescription();
+    if (didShowAnswerScreen && newForegroundCall != null) {
+      if (newForegroundCall.getState() == State.DISCONNECTED
+          || newForegroundCall.getState() == State.IDLE) {
+        LogUtil.i(
+            "InCallActivity.onForegroundCallChanged",
+            "rejecting incoming call, not updating " + "window background color");
+      }
+    } else {
+      LogUtil.v("InCallActivity.onForegroundCallChanged", "resetting background color");
+      updateWindowBackgroundColor(0);
+    }
+  }
+
+  public void updateWindowBackgroundColor(@FloatRange(from = -1f, to = 1.0f) float progress) {
+    ThemeColorManager themeColorManager = InCallPresenter.getInstance().getThemeColorManager();
+    @ColorInt int top;
+    @ColorInt int middle;
+    @ColorInt int bottom;
+    @ColorInt int gray = 0x66000000;
+
+    if (ActivityCompat.isInMultiWindowMode(this)) {
+      top = themeColorManager.getBackgroundColorSolid();
+      middle = themeColorManager.getBackgroundColorSolid();
+      bottom = themeColorManager.getBackgroundColorSolid();
+    } else {
+      top = themeColorManager.getBackgroundColorTop();
+      middle = themeColorManager.getBackgroundColorMiddle();
+      bottom = themeColorManager.getBackgroundColorBottom();
+    }
+
+    if (progress < 0) {
+      float correctedProgress = Math.abs(progress);
+      top = ColorUtils.blendARGB(top, gray, correctedProgress);
+      middle = ColorUtils.blendARGB(middle, gray, correctedProgress);
+      bottom = ColorUtils.blendARGB(bottom, gray, correctedProgress);
+    }
+
+    boolean backgroundDirty = false;
+    if (backgroundDrawable == null) {
+      backgroundDrawableColors = new int[] {top, middle, bottom};
+      backgroundDrawable = new GradientDrawable(Orientation.TOP_BOTTOM, backgroundDrawableColors);
+      backgroundDirty = true;
+    } else {
+      if (backgroundDrawableColors[0] != top) {
+        backgroundDrawableColors[0] = top;
+        backgroundDirty = true;
+      }
+      if (backgroundDrawableColors[1] != middle) {
+        backgroundDrawableColors[1] = middle;
+        backgroundDirty = true;
+      }
+      if (backgroundDrawableColors[2] != bottom) {
+        backgroundDrawableColors[2] = bottom;
+        backgroundDirty = true;
+      }
+      if (backgroundDirty) {
+        backgroundDrawable.setColors(backgroundDrawableColors);
+      }
+    }
+
+    if (backgroundDirty) {
+      getWindow().setBackgroundDrawable(backgroundDrawable);
+    }
+  }
+
+  public boolean isVisible() {
+    return isVisible;
+  }
+
+  public boolean getCallCardFragmentVisible() {
+    return didShowInCallScreen || didShowVideoCallScreen;
+  }
+
+  public void dismissKeyguard(boolean dismiss) {
+    common.dismissKeyguard(dismiss);
+  }
+
+  public void showPostCharWaitDialog(String callId, String chars) {
+    common.showPostCharWaitDialog(callId, chars);
+  }
+
+  public void maybeShowErrorDialogOnDisconnect(DisconnectCause disconnectCause) {
+    common.maybeShowErrorDialogOnDisconnect(disconnectCause);
+  }
+
+  public void dismissPendingDialogs() {
+    if (isVisible) {
+      LogUtil.i("InCallActivity.dismissPendingDialogs", "");
+      common.dismissPendingDialogs();
+      AnswerScreen answerScreen = getAnswerScreen();
+      if (answerScreen != null) {
+        answerScreen.dismissPendingDialogs();
+      }
+      needDismissPendingDialogs = false;
+    } else {
+      // The activity is not visible and onSaveInstanceState may have been called so defer the
+      // dismissing action.
+      LogUtil.i(
+          "InCallActivity.dismissPendingDialogs", "defer actions since activity is not visible");
+      needDismissPendingDialogs = true;
+    }
+  }
+
+  private void enableInCallOrientationEventListener(boolean enable) {
+    common.enableInCallOrientationEventListener(enable);
+  }
+
+  public void setExcludeFromRecents(boolean exclude) {
+    common.setExcludeFromRecents(exclude);
+  }
+
+  public void onResolveIntent(
+      DialerCall outgoingCall, boolean isNewOutgoingCall, boolean didShowAccountSelectionDialog) {
+    if (didShowAccountSelectionDialog) {
+      hideMainInCallFragment();
+    }
+  }
+
+  @Nullable
+  public FragmentManager getDialpadFragmentManager() {
+    InCallScreen inCallScreen = getInCallScreen();
+    if (inCallScreen != null) {
+      return inCallScreen.getInCallScreenFragment().getChildFragmentManager();
+    }
+    return null;
+  }
+
+  public int getDialpadContainerId() {
+    return getInCallScreen().getAnswerAndDialpadContainerResourceId();
+  }
+
+  @Override
+  public AnswerScreenDelegate newAnswerScreenDelegate(AnswerScreen answerScreen) {
+    DialerCall call = CallList.getInstance().getCallById(answerScreen.getCallId());
+    if (call == null) {
+      // This is a work around for a bug where we attempt to create a new delegate after the call
+      // has already been removed. An example of when this can happen is:
+      // 1. incoming video call in landscape mode
+      // 2. remote party hangs up
+      // 3. activity switches from landscape to portrait
+      // At step #3 the answer fragment will try to create a new answer delegate but the call won't
+      // exist. In this case we'll simply return a stub delegate that does nothing. This is ok
+      // because this new state is transient and the activity will be destroyed soon.
+      LogUtil.i("InCallActivity.onPrimaryCallStateChanged", "call doesn't exist, using stub");
+      return new AnswerScreenPresenterStub();
+    } else {
+      return new AnswerScreenPresenter(
+          this, answerScreen, CallList.getInstance().getCallById(answerScreen.getCallId()));
+    }
+  }
+
+  @Override
+  public InCallScreenDelegate newInCallScreenDelegate() {
+    return new CallCardPresenter(this);
+  }
+
+  @Override
+  public InCallButtonUiDelegate newInCallButtonUiDelegate() {
+    return new CallButtonPresenter(this);
+  }
+
+  @Override
+  public VideoCallScreenDelegate newVideoCallScreenDelegate() {
+    return new VideoCallPresenter();
+  }
+
+  public void onPrimaryCallStateChanged() {
+    LogUtil.i("InCallActivity.onPrimaryCallStateChanged", "");
+    showMainInCallFragment();
+  }
+
+  public void onWiFiToLteHandover(DialerCall call) {
+    common.showWifiToLteHandoverToast(call);
+  }
+
+  public void onHandoverToWifiFailed(DialerCall call) {
+    common.showWifiFailedDialog(call);
+  }
+
+  public void setAllowOrientationChange(boolean allowOrientationChange) {
+    if (!allowOrientationChange) {
+      setRequestedOrientation(InCallOrientationEventListener.ACTIVITY_PREFERENCE_DISALLOW_ROTATION);
+    } else {
+      setRequestedOrientation(InCallOrientationEventListener.ACTIVITY_PREFERENCE_ALLOW_ROTATION);
+    }
+    enableInCallOrientationEventListener(allowOrientationChange);
+  }
+
+  private void hideMainInCallFragment() {
+    LogUtil.i("InCallActivity.hideMainInCallFragment", "");
+    if (didShowInCallScreen || didShowVideoCallScreen) {
+      FragmentTransaction transaction = getSupportFragmentManager().beginTransaction();
+      hideInCallScreenFragment(transaction);
+      hideVideoCallScreenFragment(transaction);
+      transaction.commitAllowingStateLoss();
+      getSupportFragmentManager().executePendingTransactions();
+    }
+  }
+
+  private void showMainInCallFragment() {
+    // If the activity's onStart method hasn't been called yet then defer doing any work.
+    if (!isVisible) {
+      LogUtil.i("InCallActivity.showMainInCallFragment", "not visible yet/anymore");
+      return;
+    }
+
+    // Don't let this be reentrant.
+    if (isInShowMainInCallFragment) {
+      LogUtil.i("InCallActivity.showMainInCallFragment", "already in method, bailing");
+      return;
+    }
+
+    isInShowMainInCallFragment = true;
+    ShouldShowAnswerUiResult shouldShowAnswerUi = getShouldShowAnswerUi();
+    boolean shouldShowVideoUi = getShouldShowVideoUi();
+    LogUtil.i(
+        "InCallActivity.showMainInCallFragment",
+        "shouldShowAnswerUi: %b, shouldShowVideoUi: %b, "
+            + "didShowAnswerScreen: %b, didShowInCallScreen: %b, didShowVideoCallScreen: %b",
+        shouldShowAnswerUi.shouldShow,
+        shouldShowVideoUi,
+        didShowAnswerScreen,
+        didShowInCallScreen,
+        didShowVideoCallScreen);
+    // Only video call ui allows orientation change.
+    setAllowOrientationChange(shouldShowVideoUi);
+
+    FragmentTransaction transaction = getSupportFragmentManager().beginTransaction();
+    boolean didChangeInCall;
+    boolean didChangeVideo;
+    boolean didChangeAnswer;
+    if (shouldShowAnswerUi.shouldShow) {
+      didChangeInCall = hideInCallScreenFragment(transaction);
+      didChangeVideo = hideVideoCallScreenFragment(transaction);
+      didChangeAnswer = showAnswerScreenFragment(transaction, shouldShowAnswerUi.call);
+    } else if (shouldShowVideoUi) {
+      didChangeInCall = hideInCallScreenFragment(transaction);
+      didChangeVideo = showVideoCallScreenFragment(transaction);
+      didChangeAnswer = hideAnswerScreenFragment(transaction);
+    } else {
+      didChangeInCall = showInCallScreenFragment(transaction);
+      didChangeVideo = hideVideoCallScreenFragment(transaction);
+      didChangeAnswer = hideAnswerScreenFragment(transaction);
+    }
+
+    if (didChangeInCall || didChangeVideo || didChangeAnswer) {
+      transaction.commitNow();
+      Logger.get(this).logScreenView(ScreenEvent.Type.INCALL, this);
+    }
+    isInShowMainInCallFragment = false;
+  }
+
+  private ShouldShowAnswerUiResult getShouldShowAnswerUi() {
+    DialerCall call = CallList.getInstance().getIncomingCall();
+    if (call != null) {
+      LogUtil.i("InCallActivity.getShouldShowAnswerUi", "found incoming call");
+      return new ShouldShowAnswerUiResult(true, call);
+    }
+
+    call = CallList.getInstance().getVideoUpgradeRequestCall();
+    if (call != null) {
+      LogUtil.i("InCallActivity.getShouldShowAnswerUi", "found video upgrade request");
+      return new ShouldShowAnswerUiResult(true, call);
+    }
+
+    // Check if we're showing the answer screen and the call is disconnected. If this condition is
+    // true then we won't switch from the answer UI to the in call UI. This prevents flicker when
+    // the user rejects an incoming call.
+    call = CallList.getInstance().getFirstCall();
+    if (call == null) {
+      call = CallList.getInstance().getBackgroundCall();
+    }
+    if (didShowAnswerScreen && (call == null || call.getState() == State.DISCONNECTED)) {
+      LogUtil.i("InCallActivity.getShouldShowAnswerUi", "found disconnecting incoming call");
+      return new ShouldShowAnswerUiResult(true, call);
+    }
+
+    return new ShouldShowAnswerUiResult(false, null);
+  }
+
+  private boolean getShouldShowVideoUi() {
+    DialerCall call = CallList.getInstance().getFirstCall();
+    if (call == null) {
+      LogUtil.i("InCallActivity.getShouldShowVideoUi", "null call");
+      return false;
+    }
+
+    if (VideoUtils.isVideoCall(call)) {
+      LogUtil.i("InCallActivity.getShouldShowVideoUi", "found video call");
+      return true;
+    }
+
+    if (VideoUtils.hasSentVideoUpgradeRequest(call)) {
+      LogUtil.i("InCallActivity.getShouldShowVideoUi", "upgrading to video");
+      return true;
+    }
+
+    return false;
+  }
+
+  private boolean showAnswerScreenFragment(FragmentTransaction transaction, DialerCall call) {
+    // When rejecting a call the active call can become null in which case we should continue
+    // showing the answer screen.
+    if (didShowAnswerScreen && call == null) {
+      return false;
+    }
+
+    boolean isVideoUpgradeRequest = VideoUtils.hasReceivedVideoUpgradeRequest(call);
+    int videoState = isVideoUpgradeRequest ? call.getRequestedVideoState() : call.getVideoState();
+
+    // Check if we're already showing an answer screen for this call.
+    if (didShowAnswerScreen) {
+      AnswerScreen answerScreen = getAnswerScreen();
+      if (answerScreen.getCallId().equals(call.getId())
+          && answerScreen.getVideoState() == videoState
+          && answerScreen.isVideoUpgradeRequest() == isVideoUpgradeRequest) {
+        return false;
+      }
+      LogUtil.i(
+          "InCallActivity.showAnswerScreenFragment",
+          "answer fragment exists but arguments do not match");
+      hideAnswerScreenFragment(transaction);
+    }
+
+    // Show a new answer screen.
+    AnswerScreen answerScreen =
+        AnswerBindings.createAnswerScreen(call.getId(), videoState, isVideoUpgradeRequest);
+    transaction.add(R.id.main, answerScreen.getAnswerScreenFragment(), TAG_ANSWER_SCREEN);
+
+    Logger.get(this).logScreenView(ScreenEvent.Type.INCOMING_CALL, this);
+    didShowAnswerScreen = true;
+    return true;
+  }
+
+  private boolean hideAnswerScreenFragment(FragmentTransaction transaction) {
+    if (!didShowAnswerScreen) {
+      return false;
+    }
+    AnswerScreen answerScreen = getAnswerScreen();
+    if (answerScreen != null) {
+      transaction.remove(answerScreen.getAnswerScreenFragment());
+    }
+
+    didShowAnswerScreen = false;
+    return true;
+  }
+
+  private boolean showInCallScreenFragment(FragmentTransaction transaction) {
+    if (didShowInCallScreen) {
+      return false;
+    }
+    InCallScreen inCallScreen = getInCallScreen();
+    if (inCallScreen == null) {
+      inCallScreen = InCallBindings.createInCallScreen();
+      transaction.add(R.id.main, inCallScreen.getInCallScreenFragment(), TAG_IN_CALL_SCREEN);
+    } else {
+      transaction.show(inCallScreen.getInCallScreenFragment());
+    }
+    Logger.get(this).logScreenView(ScreenEvent.Type.INCALL, this);
+    didShowInCallScreen = true;
+    return true;
+  }
+
+  private boolean hideInCallScreenFragment(FragmentTransaction transaction) {
+    if (!didShowInCallScreen) {
+      return false;
+    }
+    InCallScreen inCallScreen = getInCallScreen();
+    if (inCallScreen != null) {
+      transaction.hide(inCallScreen.getInCallScreenFragment());
+    }
+    didShowInCallScreen = false;
+    return true;
+  }
+
+  private boolean showVideoCallScreenFragment(FragmentTransaction transaction) {
+    if (didShowVideoCallScreen) {
+      return false;
+    }
+
+    VideoCallScreen videoCallScreen = VideoBindings.createVideoCallScreen();
+    transaction.add(R.id.main, videoCallScreen.getVideoCallScreenFragment(), TAG_VIDEO_CALL_SCREEN);
+
+    Logger.get(this).logScreenView(ScreenEvent.Type.INCALL, this);
+    didShowVideoCallScreen = true;
+    return true;
+  }
+
+  private boolean hideVideoCallScreenFragment(FragmentTransaction transaction) {
+    if (!didShowVideoCallScreen) {
+      return false;
+    }
+    VideoCallScreen videoCallScreen = getVideoCallScreen();
+    if (videoCallScreen != null) {
+      transaction.remove(videoCallScreen.getVideoCallScreenFragment());
+    }
+    didShowVideoCallScreen = false;
+    return true;
+  }
+
+  AnswerScreen getAnswerScreen() {
+    return (AnswerScreen) getSupportFragmentManager().findFragmentByTag(TAG_ANSWER_SCREEN);
+  }
+
+  InCallScreen getInCallScreen() {
+    return (InCallScreen) getSupportFragmentManager().findFragmentByTag(TAG_IN_CALL_SCREEN);
+  }
+
+  VideoCallScreen getVideoCallScreen() {
+    return (VideoCallScreen) getSupportFragmentManager().findFragmentByTag(TAG_VIDEO_CALL_SCREEN);
+  }
+
+  @Override
+  public void onPseudoScreenStateChanged(boolean isOn) {
+    LogUtil.i("InCallActivity.onPseudoScreenStateChanged", "isOn: " + isOn);
+    pseudoBlackScreenOverlay.setVisibility(isOn ? View.GONE : View.VISIBLE);
+  }
+
+  /**
+   * For some touch related issue, turning off the screen can be faked by drawing a black view over
+   * the activity. All touch events started when the screen is "off" is rejected.
+   *
+   * @see PseudoScreenState
+   */
+  @Override
+  public boolean dispatchTouchEvent(MotionEvent event) {
+    // Reject any gesture that started when the screen is in the fake off state.
+    if (touchDownWhenPseudoScreenOff) {
+      if (event.getAction() == MotionEvent.ACTION_UP) {
+        touchDownWhenPseudoScreenOff = false;
+      }
+      return true;
+    }
+    // Reject all touch event when the screen is in the fake off state.
+    if (!InCallPresenter.getInstance().getPseudoScreenState().isOn()) {
+      if (event.getAction() == MotionEvent.ACTION_DOWN) {
+        touchDownWhenPseudoScreenOff = true;
+        LogUtil.i("InCallActivity.dispatchTouchEvent", "touchDownWhenPseudoScreenOff");
+      }
+      return true;
+    }
+    return super.dispatchTouchEvent(event);
+  }
+
+  private static class ShouldShowAnswerUiResult {
+    public final boolean shouldShow;
+    public final DialerCall call;
+
+    ShouldShowAnswerUiResult(boolean shouldShow, DialerCall call) {
+      this.shouldShow = shouldShow;
+      this.call = call;
+    }
+  }
+}