/*
 * 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.incallui;

import android.animation.Animator;
import android.animation.AnimatorListenerAdapter;
import android.animation.AnimatorSet;
import android.animation.LayoutTransition;
import android.animation.ObjectAnimator;
import android.app.Activity;
import android.content.Context;
import android.content.res.Configuration;
import android.graphics.Point;
import android.graphics.drawable.AnimationDrawable;
import android.graphics.drawable.Drawable;
import android.os.Bundle;
import android.telecom.DisconnectCause;
import android.telecom.VideoProfile;
import android.telephony.PhoneNumberUtils;
import android.text.TextUtils;
import android.view.Display;
import android.view.LayoutInflater;
import android.view.View;
import android.view.View.OnLayoutChangeListener;
import android.view.ViewAnimationUtils;
import android.view.ViewGroup;
import android.view.ViewPropertyAnimator;
import android.view.ViewTreeObserver;
import android.view.ViewTreeObserver.OnGlobalLayoutListener;
import android.view.accessibility.AccessibilityEvent;
import android.view.animation.Animation;
import android.view.animation.AnimationUtils;
import android.widget.ImageButton;
import android.widget.ImageView;
import android.widget.TextView;
import com.android.contacts.common.util.MaterialColorMapUtils.MaterialPalette;
import com.android.contacts.common.widget.FloatingActionButtonController;
import com.android.phone.common.animation.AnimUtils;

import java.util.List;

/**
 * Fragment for call card.
 */
public class CallCardFragment extends BaseFragment<CallCardPresenter, CallCardPresenter.CallCardUi>
        implements CallCardPresenter.CallCardUi {

    private AnimatorSet mAnimatorSet;
    private int mRevealAnimationDuration;
    private int mShrinkAnimationDuration;
    private int mFabNormalDiameter;
    private int mFabSmallDiameter;
    private boolean mIsLandscape;
    private boolean mIsDialpadShowing;

    // Primary caller info
    private TextView mPhoneNumber;
    private TextView mNumberLabel;
    private TextView mPrimaryName;
    private View mCallStateButton;
    private ImageView mCallStateIcon;
    private ImageView mCallStateVideoCallIcon;
    private TextView mCallStateLabel;
    private TextView mCallTypeLabel;
    private View mCallNumberAndLabel;
    private ImageView mPhoto;
    private TextView mElapsedTime;
    private Drawable mPrimaryPhotoDrawable;

    // Container view that houses the entire primary call card, including the call buttons
    private View mPrimaryCallCardContainer;
    // Container view that houses the primary call information
    private ViewGroup mPrimaryCallInfo;
    private View mCallButtonsContainer;

    // Secondary caller info
    private View mSecondaryCallInfo;
    private TextView mSecondaryCallName;
    private View mSecondaryCallProviderInfo;
    private TextView mSecondaryCallProviderLabel;
    private View mSecondaryCallConferenceCallIcon;
    private View mProgressSpinner;

    private View mManageConferenceCallButton;

    // Dark number info bar
    private TextView mInCallMessageLabel;

    private FloatingActionButtonController mFloatingActionButtonController;
    private View mFloatingActionButtonContainer;
    private ImageButton mFloatingActionButton;
    private int mFloatingActionButtonVerticalOffset;

    // Cached DisplayMetrics density.
    private float mDensity;

    private float mTranslationOffset;
    private Animation mPulseAnimation;

    private int mVideoAnimationDuration;

    private MaterialPalette mCurrentThemeColors;

    @Override
    CallCardPresenter.CallCardUi getUi() {
        return this;
    }

    @Override
    CallCardPresenter createPresenter() {
        return new CallCardPresenter();
    }

    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);

        mRevealAnimationDuration = getResources().getInteger(R.integer.reveal_animation_duration);
        mShrinkAnimationDuration = getResources().getInteger(R.integer.shrink_animation_duration);
        mVideoAnimationDuration = getResources().getInteger(R.integer.video_animation_duration);
        mFloatingActionButtonVerticalOffset = getResources().getDimensionPixelOffset(
                R.dimen.floating_action_bar_vertical_offset);
        mFabNormalDiameter = getResources().getDimensionPixelOffset(
                R.dimen.end_call_floating_action_button_diameter);
        mFabSmallDiameter = getResources().getDimensionPixelOffset(
                R.dimen.end_call_floating_action_button_small_diameter);
    }


    @Override
    public void onActivityCreated(Bundle savedInstanceState) {
        super.onActivityCreated(savedInstanceState);

        final CallList calls = CallList.getInstance();
        final Call call = calls.getFirstCall();
        getPresenter().init(getActivity(), call);
    }

    @Override
    public View onCreateView(LayoutInflater inflater, ViewGroup container,
            Bundle savedInstanceState) {
        super.onCreateView(inflater, container, savedInstanceState);

        mDensity = getResources().getDisplayMetrics().density;
        mTranslationOffset =
                getResources().getDimensionPixelSize(R.dimen.call_card_anim_translate_y_offset);

        return inflater.inflate(R.layout.call_card_content, container, false);
    }

    @Override
    public void onViewCreated(View view, Bundle savedInstanceState) {
        super.onViewCreated(view, savedInstanceState);

        mPulseAnimation =
                AnimationUtils.loadAnimation(view.getContext(), R.anim.call_status_pulse);

        mPhoneNumber = (TextView) view.findViewById(R.id.phoneNumber);
        mPrimaryName = (TextView) view.findViewById(R.id.name);
        mNumberLabel = (TextView) view.findViewById(R.id.label);
        mSecondaryCallInfo = view.findViewById(R.id.secondary_call_info);
        mSecondaryCallProviderInfo = view.findViewById(R.id.secondary_call_provider_info);
        mPhoto = (ImageView) view.findViewById(R.id.photo);
        mCallStateIcon = (ImageView) view.findViewById(R.id.callStateIcon);
        mCallStateVideoCallIcon = (ImageView) view.findViewById(R.id.videoCallIcon);
        mCallStateLabel = (TextView) view.findViewById(R.id.callStateLabel);
        mCallNumberAndLabel = view.findViewById(R.id.labelAndNumber);
        mCallTypeLabel = (TextView) view.findViewById(R.id.callTypeLabel);
        mElapsedTime = (TextView) view.findViewById(R.id.elapsedTime);
        mPrimaryCallCardContainer = view.findViewById(R.id.primary_call_info_container);
        mPrimaryCallInfo = (ViewGroup) view.findViewById(R.id.primary_call_banner);
        mCallButtonsContainer = view.findViewById(R.id.callButtonFragment);
        mInCallMessageLabel = (TextView) view.findViewById(R.id.connectionServiceMessage);
        mProgressSpinner = view.findViewById(R.id.progressSpinner);

        mFloatingActionButtonContainer = view.findViewById(
                R.id.floating_end_call_action_button_container);
        mFloatingActionButton = (ImageButton) view.findViewById(
                R.id.floating_end_call_action_button);
        mFloatingActionButton.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                getPresenter().endCallClicked();
            }
        });
        mFloatingActionButtonController = new FloatingActionButtonController(getActivity(),
                mFloatingActionButtonContainer, mFloatingActionButton);

        mSecondaryCallInfo.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                getPresenter().secondaryInfoClicked();
                updateFabPositionForSecondaryCallInfo();
            }
        });

        mCallStateButton = view.findViewById(R.id.callStateButton);
        mCallStateButton.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                getPresenter().onCallStateButtonTouched();
            }
        });

        mManageConferenceCallButton = view.findViewById(R.id.manage_conference_call_button);
        mManageConferenceCallButton.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                InCallActivity activity = (InCallActivity) getActivity();
                activity.showConferenceCallManager(true);
            }
        });

        mPrimaryName.setElegantTextHeight(false);
        mCallStateLabel.setElegantTextHeight(false);
    }

    @Override
    public void setVisible(boolean on) {
        if (on) {
            getView().setVisibility(View.VISIBLE);
        } else {
            getView().setVisibility(View.INVISIBLE);
        }
    }

    /**
     * Hides or shows the progress spinner.
     *
     * @param visible {@code True} if the progress spinner should be visible.
     */
    @Override
    public void setProgressSpinnerVisible(boolean visible) {
        mProgressSpinner.setVisibility(visible ? View.VISIBLE : View.GONE);
    }

    /**
     * Sets the visibility of the primary call card.
     * Ensures that when the primary call card is hidden, the video surface slides over to fill the
     * entire screen.
     *
     * @param visible {@code True} if the primary call card should be visible.
     */
    @Override
    public void setCallCardVisible(final boolean visible) {
        // When animating the hide/show of the views in a landscape layout, we need to take into
        // account whether we are in a left-to-right locale or a right-to-left locale and adjust
        // the animations accordingly.
        final boolean isLayoutRtl = InCallPresenter.isRtl();

        // Retrieve here since at fragment creation time the incoming video view is not inflated.
        final View videoView = getView().findViewById(R.id.incomingVideo);

        // Determine how much space there is below or to the side of the call card.
        final float spaceBesideCallCard = getSpaceBesideCallCard();

        // We need to translate the video surface, but we need to know its position after the layout
        // has occurred so use a {@code ViewTreeObserver}.
        final ViewTreeObserver observer = getView().getViewTreeObserver();
        observer.addOnPreDrawListener(new ViewTreeObserver.OnPreDrawListener() {
            @Override
            public boolean onPreDraw() {
                // We don't want to continue getting called.
                if (observer.isAlive()) {
                    observer.removeOnPreDrawListener(this);
                }

                float videoViewTranslation = 0f;

                // Translate the call card to its pre-animation state.
                if (mIsLandscape) {
                    float translationX = mPrimaryCallCardContainer.getWidth();
                    translationX *= isLayoutRtl ? 1 : -1;

                    mPrimaryCallCardContainer.setTranslationX(visible ? translationX : 0);

                    if (visible) {
                        videoViewTranslation = videoView.getWidth() / 2 - spaceBesideCallCard / 2;
                        videoViewTranslation *= isLayoutRtl ? -1 : 1;
                    }
                } else {
                    mPrimaryCallCardContainer.setTranslationY(visible ?
                            -mPrimaryCallCardContainer.getHeight() : 0);

                    if (visible) {
                        videoViewTranslation = videoView.getHeight() / 2 - spaceBesideCallCard / 2;
                    }
                }

                // Perform animation of video view.
                ViewPropertyAnimator videoViewAnimator = videoView.animate()
                        .setInterpolator(AnimUtils.EASE_OUT_EASE_IN)
                        .setDuration(mVideoAnimationDuration);
                if (mIsLandscape) {
                    videoViewAnimator
                            .translationX(videoViewTranslation)
                            .start();
                } else {
                    videoViewAnimator
                            .translationY(videoViewTranslation)
                            .start();
                }
                videoViewAnimator.start();

                // Animate the call card sliding.
                ViewPropertyAnimator callCardAnimator = mPrimaryCallCardContainer.animate()
                        .setInterpolator(AnimUtils.EASE_OUT_EASE_IN)
                        .setDuration(mVideoAnimationDuration)
                        .setListener(new AnimatorListenerAdapter() {
                            @Override
                            public void onAnimationEnd(Animator animation) {
                                super.onAnimationEnd(animation);
                                if (!visible) {
                                    mPrimaryCallCardContainer.setVisibility(View.GONE);
                                }
                            }

                            @Override
                            public void onAnimationStart(Animator animation) {
                                super.onAnimationStart(animation);
                                if (visible) {
                                    mPrimaryCallCardContainer.setVisibility(View.VISIBLE);
                                }
                            }
                        });

                if (mIsLandscape) {
                    float translationX = mPrimaryCallCardContainer.getWidth();
                    translationX *= isLayoutRtl ? 1 : -1;
                    callCardAnimator
                            .translationX(visible ? 0 : translationX)
                            .start();
                } else {
                    callCardAnimator
                            .translationY(visible ? 0 : -mPrimaryCallCardContainer.getHeight())
                            .start();
                }

                return true;
            }
        });
    }

    /**
     * Determines the amount of space below the call card for portrait layouts), or beside the
     * call card for landscape layouts.
     *
     * @return The amount of space below or beside the call card.
     */
    public float getSpaceBesideCallCard() {
        if (mIsLandscape) {
            return getView().getWidth() - mPrimaryCallCardContainer.getWidth();
        } else {
            return getView().getHeight() - mPrimaryCallCardContainer.getHeight();
        }
    }

    @Override
    public void setPrimaryName(String name, boolean nameIsNumber) {
        if (TextUtils.isEmpty(name)) {
            mPrimaryName.setText(null);
        } else {
            mPrimaryName.setText(name);

            // Set direction of the name field
            int nameDirection = View.TEXT_DIRECTION_INHERIT;
            if (nameIsNumber) {
                nameDirection = View.TEXT_DIRECTION_LTR;
            }
            mPrimaryName.setTextDirection(nameDirection);
        }
    }

    @Override
    public void setPrimaryImage(Drawable image) {
        if (image != null) {
            setDrawableToImageView(mPhoto, image);
        }
    }

    @Override
    public void setPrimaryPhoneNumber(String number) {
        // Set the number
        if (TextUtils.isEmpty(number)) {
            mPhoneNumber.setText(null);
            mPhoneNumber.setVisibility(View.GONE);
        } else {
            mPhoneNumber.setText(number);
            mPhoneNumber.setVisibility(View.VISIBLE);
            mPhoneNumber.setTextDirection(View.TEXT_DIRECTION_LTR);
        }
    }

    @Override
    public void setPrimaryLabel(String label) {
        if (!TextUtils.isEmpty(label)) {
            mNumberLabel.setText(label);
            mNumberLabel.setVisibility(View.VISIBLE);
        } else {
            mNumberLabel.setVisibility(View.GONE);
        }

    }

    @Override
    public void setPrimary(String number, String name, boolean nameIsNumber, String label,
            Drawable photo, boolean isSipCall) {
        Log.d(this, "Setting primary call");

        // set the name field.
        setPrimaryName(name, nameIsNumber);

        if (TextUtils.isEmpty(number) && TextUtils.isEmpty(label)) {
            mCallNumberAndLabel.setVisibility(View.GONE);
        } else {
            mCallNumberAndLabel.setVisibility(View.VISIBLE);
        }

        setPrimaryPhoneNumber(number);

        // Set the label (Mobile, Work, etc)
        setPrimaryLabel(label);

        showInternetCallLabel(isSipCall);

        setDrawableToImageView(mPhoto, photo);
    }

    @Override
    public void setSecondary(boolean show, String name, boolean nameIsNumber, String label,
            String providerLabel, boolean isConference) {

        if (show != mSecondaryCallInfo.isShown()) {
            updateFabPositionForSecondaryCallInfo();
        }

        if (show) {
            boolean hasProvider = !TextUtils.isEmpty(providerLabel);
            showAndInitializeSecondaryCallInfo(hasProvider);

            mSecondaryCallConferenceCallIcon.setVisibility(isConference ? View.VISIBLE : View.GONE);

            mSecondaryCallName.setText(name);
            if (hasProvider) {
                mSecondaryCallProviderLabel.setText(providerLabel);
            }

            int nameDirection = View.TEXT_DIRECTION_INHERIT;
            if (nameIsNumber) {
                nameDirection = View.TEXT_DIRECTION_LTR;
            }
            mSecondaryCallName.setTextDirection(nameDirection);
        } else {
            mSecondaryCallInfo.setVisibility(View.GONE);
        }
    }

    @Override
    public void setCallState(
            int state,
            int videoState,
            int sessionModificationState,
            DisconnectCause disconnectCause,
            String connectionLabel,
            Drawable callStateIcon,
            String gatewayNumber) {
        boolean isGatewayCall = !TextUtils.isEmpty(gatewayNumber);
        CharSequence callStateLabel = getCallStateLabelFromState(state, videoState,
                sessionModificationState, disconnectCause, connectionLabel, isGatewayCall);

        Log.v(this, "setCallState " + callStateLabel);
        Log.v(this, "DisconnectCause " + disconnectCause.toString());
        Log.v(this, "gateway " + connectionLabel + gatewayNumber);

        if (TextUtils.equals(callStateLabel, mCallStateLabel.getText())) {
            // Nothing to do if the labels are the same
            return;
        }

        // Update the call state label and icon.
        if (!TextUtils.isEmpty(callStateLabel)) {
            mCallStateLabel.setText(callStateLabel);
            mCallStateLabel.setAlpha(1);
            mCallStateLabel.setVisibility(View.VISIBLE);

            if (state == Call.State.ACTIVE || state == Call.State.CONFERENCED) {
                mCallStateLabel.clearAnimation();
            } else {
                mCallStateLabel.startAnimation(mPulseAnimation);
            }
        } else {
            Animation callStateLabelAnimation = mCallStateLabel.getAnimation();
            if (callStateLabelAnimation != null) {
                callStateLabelAnimation.cancel();
            }
            mCallStateLabel.setText(null);
            mCallStateLabel.setAlpha(0);
            mCallStateLabel.setVisibility(View.GONE);
        }

        if (callStateIcon != null) {
            mCallStateIcon.setVisibility(View.VISIBLE);
            // Invoke setAlpha(float) instead of setAlpha(int) to set the view's alpha. This is
            // needed because the pulse animation operates on the view alpha.
            mCallStateIcon.setAlpha(1.0f);
            mCallStateIcon.setImageDrawable(callStateIcon);

            if (state == Call.State.ACTIVE || state == Call.State.CONFERENCED
                    || TextUtils.isEmpty(callStateLabel)) {
                mCallStateIcon.clearAnimation();
            } else {
                if (callStateIcon instanceof AnimationDrawable) {
                    // Animate the drawable instead of the view
                    ((AnimationDrawable) callStateIcon).start();
                } else {
                    mCallStateIcon.startAnimation(mPulseAnimation);
                }
            }
        } else {
            Animation callStateIconAnimation = mCallStateIcon.getAnimation();
            if (callStateIconAnimation != null) {
                callStateIconAnimation.cancel();
            }

            // Invoke setAlpha(float) instead of setAlpha(int) to set the view's alpha. This is
            // needed because the pulse animation operates on the view alpha.
            mCallStateIcon.setAlpha(0.0f);
            mCallStateIcon.setVisibility(View.GONE);
        }

        if (VideoProfile.VideoState.isBidirectional(videoState)
                || (state == Call.State.ACTIVE && sessionModificationState
                        == Call.SessionModificationState.WAITING_FOR_RESPONSE)) {
            mCallStateVideoCallIcon.setVisibility(View.VISIBLE);
        } else {
            mCallStateVideoCallIcon.setVisibility(View.GONE);
        }
    }

    @Override
    public void setCallbackNumber(String callbackNumber, boolean isEmergencyCall) {
        if (mInCallMessageLabel == null) {
            return;
        }

        if (TextUtils.isEmpty(callbackNumber)) {
            mInCallMessageLabel.setVisibility(View.GONE);
            return;
        }

        // TODO: The new Locale-specific methods don't seem to be working. Revisit this.
        callbackNumber = PhoneNumberUtils.formatNumber(callbackNumber);

        int stringResourceId = isEmergencyCall ? R.string.card_title_callback_number_emergency
                : R.string.card_title_callback_number;

        String text = getString(stringResourceId, callbackNumber);
        mInCallMessageLabel.setText(text);

        mInCallMessageLabel.setVisibility(View.VISIBLE);
    }

    private void showInternetCallLabel(boolean show) {
        if (show) {
            final String label = getView().getContext().getString(
                    R.string.incall_call_type_label_sip);
            mCallTypeLabel.setVisibility(View.VISIBLE);
            mCallTypeLabel.setText(label);
        } else {
            mCallTypeLabel.setVisibility(View.GONE);
        }
    }

    @Override
    public void setPrimaryCallElapsedTime(boolean show, String callTimeElapsed) {
        if (show) {
            if (mElapsedTime.getVisibility() != View.VISIBLE) {
                AnimUtils.fadeIn(mElapsedTime, AnimUtils.DEFAULT_DURATION);
            }
            mElapsedTime.setText(callTimeElapsed);
        } else {
            // hide() animation has no effect if it is already hidden.
            AnimUtils.fadeOut(mElapsedTime, AnimUtils.DEFAULT_DURATION);
        }
    }

    private void setDrawableToImageView(ImageView view, Drawable photo) {
        if (photo == null) {
            photo = ContactInfoCache.getInstance(
                    view.getContext()).getDefaultContactPhotoDrawable();
        }

        if (mPrimaryPhotoDrawable == photo) {
            return;
        }
        mPrimaryPhotoDrawable = photo;

        final Drawable current = view.getDrawable();
        if (current == null) {
            view.setImageDrawable(photo);
            AnimUtils.fadeIn(mElapsedTime, AnimUtils.DEFAULT_DURATION);
        } else {
            // Cross fading is buggy and not noticable due to the multiple calls to this method
            // that switch drawables in the middle of the cross-fade animations. Just set the
            // photo directly instead.
            view.setImageDrawable(photo);
            view.setVisibility(View.VISIBLE);
        }
    }

    /**
     * Gets the call state label based on the state of the call or cause of disconnect.
     *
     * Additional labels are applied as follows:
     *         1. All outgoing calls with display "Calling via [Provider]".
     *         2. Ongoing calls will display the name of the provider.
     *         3. Incoming calls will only display "Incoming via..." for accounts.
     *         4. Video calls, and session modification states (eg. requesting video).
     */
    private CharSequence getCallStateLabelFromState(int state, int videoState,
            int sessionModificationState, DisconnectCause disconnectCause, String label,
            boolean isGatewayCall) {
        final Context context = getView().getContext();
        CharSequence callStateLabel = null;  // Label to display as part of the call banner

        boolean isSpecialCall = label != null;
        boolean isAccount = isSpecialCall && !isGatewayCall;

        switch  (state) {
            case Call.State.IDLE:
                // "Call state" is meaningless in this state.
                break;
            case Call.State.ACTIVE:
                // We normally don't show a "call state label" at all in this state
                // (but we can use the call state label to display the provider name).
                if (isAccount) {
                    callStateLabel = label;
                } else if (sessionModificationState
                        == Call.SessionModificationState.REQUEST_FAILED) {
                    callStateLabel = context.getString(R.string.card_title_video_call_error);
                } else if (sessionModificationState
                        == Call.SessionModificationState.WAITING_FOR_RESPONSE) {
                    callStateLabel = context.getString(R.string.card_title_video_call_requesting);
                } else if (VideoProfile.VideoState.isBidirectional(videoState)) {
                    callStateLabel = context.getString(R.string.card_title_video_call);
                }
                break;
            case Call.State.ONHOLD:
                callStateLabel = context.getString(R.string.card_title_on_hold);
                break;
            case Call.State.CONNECTING:
            case Call.State.DIALING:
                if (isSpecialCall) {
                    callStateLabel = context.getString(R.string.calling_via_template, label);
                } else {
                    callStateLabel = context.getString(R.string.card_title_dialing);
                }
                break;
            case Call.State.REDIALING:
                callStateLabel = context.getString(R.string.card_title_redialing);
                break;
            case Call.State.INCOMING:
            case Call.State.CALL_WAITING:
                if (isAccount) {
                    callStateLabel = context.getString(R.string.incoming_via_template, label);
                } else if (VideoProfile.VideoState.isBidirectional(videoState)) {
                    callStateLabel = context.getString(R.string.notification_incoming_video_call);
                } else {
                    callStateLabel = context.getString(R.string.card_title_incoming_call);
                }
                break;
            case Call.State.DISCONNECTING:
                // While in the DISCONNECTING state we display a "Hanging up"
                // message in order to make the UI feel more responsive.  (In
                // GSM it's normal to see a delay of a couple of seconds while
                // negotiating the disconnect with the network, so the "Hanging
                // up" state at least lets the user know that we're doing
                // something.  This state is currently not used with CDMA.)
                callStateLabel = context.getString(R.string.card_title_hanging_up);
                break;
            case Call.State.DISCONNECTED:
                callStateLabel = disconnectCause.getLabel();
                if (TextUtils.isEmpty(callStateLabel)) {
                    callStateLabel = context.getString(R.string.card_title_call_ended);
                }
                break;
            case Call.State.CONFERENCED:
                callStateLabel = context.getString(R.string.card_title_conf_call);
                break;
            default:
                Log.wtf(this, "updateCallStateWidgets: unexpected call: " + state);
        }
        return callStateLabel;
    }

    private void showAndInitializeSecondaryCallInfo(boolean hasProvider) {
        mSecondaryCallInfo.setVisibility(View.VISIBLE);

        // mSecondaryCallName is initialized here (vs. onViewCreated) because it is inaccessible
        // until mSecondaryCallInfo is inflated in the call above.
        if (mSecondaryCallName == null) {
            mSecondaryCallName = (TextView) getView().findViewById(R.id.secondaryCallName);
            mSecondaryCallConferenceCallIcon =
                    getView().findViewById(R.id.secondaryCallConferenceCallIcon);
            if (hasProvider) {
                mSecondaryCallProviderInfo.setVisibility(View.VISIBLE);
                mSecondaryCallProviderLabel = (TextView) getView()
                        .findViewById(R.id.secondaryCallProviderLabel);
            }
        }
    }

    public void dispatchPopulateAccessibilityEvent(AccessibilityEvent event) {
        if (event.getEventType() == AccessibilityEvent.TYPE_WINDOW_STATE_CHANGED) {
            dispatchPopulateAccessibilityEvent(event, mCallStateLabel);
            dispatchPopulateAccessibilityEvent(event, mPrimaryName);
            dispatchPopulateAccessibilityEvent(event, mPhoneNumber);
            return;
        }
        dispatchPopulateAccessibilityEvent(event, mCallStateLabel);
        dispatchPopulateAccessibilityEvent(event, mPrimaryName);
        dispatchPopulateAccessibilityEvent(event, mPhoneNumber);
        dispatchPopulateAccessibilityEvent(event, mCallTypeLabel);
        dispatchPopulateAccessibilityEvent(event, mSecondaryCallName);
        dispatchPopulateAccessibilityEvent(event, mSecondaryCallProviderLabel);

        return;
    }

    @Override
    public void setEndCallButtonEnabled(boolean enabled, boolean animate) {
        if (enabled != mFloatingActionButton.isEnabled()) {
            if (animate) {
                if (enabled) {
                    mFloatingActionButtonController.scaleIn(AnimUtils.NO_DELAY);
                } else {
                    mFloatingActionButtonController.scaleOut();
                }
            } else {
                if (enabled) {
                    mFloatingActionButtonContainer.setScaleX(1);
                    mFloatingActionButtonContainer.setScaleY(1);
                    mFloatingActionButtonContainer.setVisibility(View.VISIBLE);
                } else {
                    mFloatingActionButtonContainer.setVisibility(View.GONE);
                }
            }
            mFloatingActionButton.setEnabled(enabled);
            updateFabPosition();
        }
    }

    /**
     * Changes the visibility of the contact photo.
     *
     * @param isVisible {@code True} if the UI should show the contact photo.
     */
    @Override
    public void setPhotoVisible(boolean isVisible) {
        mPhoto.setVisibility(isVisible ? View.VISIBLE : View.GONE);
    }

    /**
     * Changes the visibility of the "manage conference call" button.
     *
     * @param visible Whether to set the button to be visible or not.
     */
    @Override
    public void showManageConferenceCallButton(boolean visible) {
        mManageConferenceCallButton.setVisibility(visible ? View.VISIBLE : View.GONE);
    }

    /**
     * Determines the current visibility of the manage conference button.
     *
     * @return {@code true} if the button is visible.
     */
    @Override
    public boolean isManageConferenceVisible() {
        return mManageConferenceCallButton.getVisibility() == View.VISIBLE;
    }

    /**
     * Get the overall InCallUI background colors and apply to call card.
     */
    public void updateColors() {
        MaterialPalette themeColors = InCallPresenter.getInstance().getThemeColors();

        if (mCurrentThemeColors != null && mCurrentThemeColors.equals(themeColors)) {
            return;
        }

        mPrimaryCallCardContainer.setBackgroundColor(themeColors.mPrimaryColor);
        mCallButtonsContainer.setBackgroundColor(themeColors.mPrimaryColor);

        mCurrentThemeColors = themeColors;
    }

    private void dispatchPopulateAccessibilityEvent(AccessibilityEvent event, View view) {
        if (view == null) return;
        final List<CharSequence> eventText = event.getText();
        int size = eventText.size();
        view.dispatchPopulateAccessibilityEvent(event);
        // if no text added write null to keep relative position
        if (size == eventText.size()) {
            eventText.add(null);
        }
    }

    public void animateForNewOutgoingCall(final Point touchPoint,
            final boolean showCircularReveal) {
        final ViewGroup parent = (ViewGroup) mPrimaryCallCardContainer.getParent();

        final ViewTreeObserver observer = getView().getViewTreeObserver();

        mPrimaryCallInfo.getLayoutTransition().disableTransitionType(LayoutTransition.CHANGING);

        observer.addOnGlobalLayoutListener(new OnGlobalLayoutListener() {
            @Override
            public void onGlobalLayout() {
                final ViewTreeObserver observer = getView().getViewTreeObserver();
                if (!observer.isAlive()) {
                    return;
                }
                observer.removeOnGlobalLayoutListener(this);

                final LayoutIgnoringListener listener = new LayoutIgnoringListener();
                mPrimaryCallCardContainer.addOnLayoutChangeListener(listener);

                // Prepare the state of views before the circular reveal animation
                final int originalHeight = mPrimaryCallCardContainer.getHeight();
                mPrimaryCallCardContainer.setBottom(parent.getHeight());

                // Set up FAB.
                mFloatingActionButtonContainer.setVisibility(View.GONE);
                mFloatingActionButtonController.setScreenWidth(parent.getWidth());
                mCallButtonsContainer.setAlpha(0);
                mCallStateLabel.setAlpha(0);
                mPrimaryName.setAlpha(0);
                mCallTypeLabel.setAlpha(0);
                mCallNumberAndLabel.setAlpha(0);

                final Animator animator = getOutgoingCallAnimator(touchPoint,
                        parent.getHeight(), originalHeight, showCircularReveal);

                animator.addListener(new AnimatorListenerAdapter() {
                    @Override
                    public void onAnimationEnd(Animator animation) {
                        setViewStatePostAnimation(listener);
                    }
                });
                animator.start();
            }
        });
    }

    public void onDialpadVisiblityChange(boolean isShown) {
        mIsDialpadShowing = isShown;
        updateFabPosition();
    }

    private void updateFabPosition() {
        int offsetY = 0;
        if (!mIsDialpadShowing) {
            offsetY = mFloatingActionButtonVerticalOffset;
            if (mSecondaryCallInfo.isShown()) {
                offsetY -= mSecondaryCallInfo.getHeight();
            }
        }

        mFloatingActionButtonController.align(
                mIsLandscape ? FloatingActionButtonController.ALIGN_QUARTER_END
                        : FloatingActionButtonController.ALIGN_MIDDLE,
                0 /* offsetX */,
                offsetY,
                true);

        mFloatingActionButtonController.resize(
                mIsDialpadShowing ? mFabSmallDiameter : mFabNormalDiameter, true);
    }

    @Override
    public void onResume() {
        super.onResume();
        // If the previous launch animation is still running, cancel it so that we don't get
        // stuck in an intermediate animation state.
        if (mAnimatorSet != null && mAnimatorSet.isRunning()) {
            mAnimatorSet.cancel();
        }

        mIsLandscape = getResources().getConfiguration().orientation
                == Configuration.ORIENTATION_LANDSCAPE;

        final ViewGroup parent = ((ViewGroup) mPrimaryCallCardContainer.getParent());
        final ViewTreeObserver observer = parent.getViewTreeObserver();
        parent.getViewTreeObserver().addOnGlobalLayoutListener(new OnGlobalLayoutListener() {
            @Override
            public void onGlobalLayout() {
                ViewTreeObserver viewTreeObserver = observer;
                if (!viewTreeObserver.isAlive()) {
                    viewTreeObserver = parent.getViewTreeObserver();
                }
                viewTreeObserver.removeOnGlobalLayoutListener(this);
                mFloatingActionButtonController.setScreenWidth(parent.getWidth());
                updateFabPosition();
            }
        });

        updateColors();
    }

    /**
     * Adds a global layout listener to update the FAB's positioning on the next layout. This allows
     * us to position the FAB after the secondary call info's height has been calculated.
     */
    private void updateFabPositionForSecondaryCallInfo() {
        mSecondaryCallInfo.getViewTreeObserver().addOnGlobalLayoutListener(
                new ViewTreeObserver.OnGlobalLayoutListener() {
                    @Override
                    public void onGlobalLayout() {
                        final ViewTreeObserver observer = mSecondaryCallInfo.getViewTreeObserver();
                        if (!observer.isAlive()) {
                            return;
                        }
                        observer.removeOnGlobalLayoutListener(this);

                        onDialpadVisiblityChange(mIsDialpadShowing);
                    }
                });
    }

    /**
     * Animator that performs the upwards shrinking animation of the blue call card scrim.
     * At the start of the animation, each child view is moved downwards by a pre-specified amount
     * and then translated upwards together with the scrim.
     */
    private Animator getShrinkAnimator(int startHeight, int endHeight) {
        final Animator shrinkAnimator =
                ObjectAnimator.ofInt(mPrimaryCallCardContainer, "bottom", startHeight, endHeight);
        shrinkAnimator.setDuration(mShrinkAnimationDuration);
        shrinkAnimator.addListener(new AnimatorListenerAdapter() {
            @Override
            public void onAnimationStart(Animator animation) {
                assignTranslateAnimation(mCallStateLabel, 1);
                assignTranslateAnimation(mCallStateIcon, 1);
                assignTranslateAnimation(mPrimaryName, 2);
                assignTranslateAnimation(mCallNumberAndLabel, 3);
                assignTranslateAnimation(mCallTypeLabel, 4);
                assignTranslateAnimation(mCallButtonsContainer, 5);

                mFloatingActionButton.setEnabled(true);
            }
        });
        shrinkAnimator.setInterpolator(AnimUtils.EASE_IN);
        return shrinkAnimator;
    }

    private Animator getRevealAnimator(Point touchPoint) {
        final Activity activity = getActivity();
        final View view  = activity.getWindow().getDecorView();
        final Display display = activity.getWindowManager().getDefaultDisplay();
        final Point size = new Point();
        display.getSize(size);

        int startX = size.x / 2;
        int startY = size.y / 2;
        if (touchPoint != null) {
            startX = touchPoint.x;
            startY = touchPoint.y;
        }

        final Animator valueAnimator = ViewAnimationUtils.createCircularReveal(view,
                startX, startY, 0, Math.max(size.x, size.y));
        valueAnimator.setDuration(mRevealAnimationDuration);
        return valueAnimator;
    }

    private Animator getOutgoingCallAnimator(Point touchPoint, int startHeight, int endHeight,
            boolean showCircularReveal) {

        final Animator shrinkAnimator = getShrinkAnimator(startHeight, endHeight);

        if (!showCircularReveal) {
            return shrinkAnimator;
        }

        final Animator revealAnimator = getRevealAnimator(touchPoint);
        final AnimatorSet animatorSet = new AnimatorSet();
        animatorSet.playSequentially(revealAnimator, shrinkAnimator);
        return animatorSet;
    }

    private void assignTranslateAnimation(View view, int offset) {
        view.setTranslationY(mTranslationOffset * offset);
        view.animate().translationY(0).alpha(1).withLayer()
                .setDuration(mShrinkAnimationDuration).setInterpolator(AnimUtils.EASE_IN);
    }

    private void setViewStatePostAnimation(View view) {
        view.setTranslationY(0);
        view.setAlpha(1);
    }

    private void setViewStatePostAnimation(OnLayoutChangeListener layoutChangeListener) {
        setViewStatePostAnimation(mCallButtonsContainer);
        setViewStatePostAnimation(mCallStateLabel);
        setViewStatePostAnimation(mPrimaryName);
        setViewStatePostAnimation(mCallTypeLabel);
        setViewStatePostAnimation(mCallNumberAndLabel);
        setViewStatePostAnimation(mCallStateIcon);

        mPrimaryCallCardContainer.removeOnLayoutChangeListener(layoutChangeListener);
        mPrimaryCallInfo.getLayoutTransition().enableTransitionType(LayoutTransition.CHANGING);
        mFloatingActionButtonController.scaleIn(AnimUtils.NO_DELAY);
    }

    private final class LayoutIgnoringListener implements View.OnLayoutChangeListener {
        @Override
        public void onLayoutChange(View v,
                int left,
                int top,
                int right,
                int bottom,
                int oldLeft,
                int oldTop,
                int oldRight,
                int oldBottom) {
            v.setLeft(oldLeft);
            v.setRight(oldRight);
            v.setTop(oldTop);
            v.setBottom(oldBottom);
        }
    }
}