sdk/sources/android-25/com/android/systemui/statusbar/notification/NotificationViewWrapper.java

/*
 * 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.systemui.statusbar.notification;

import android.animation.Animator;
import android.animation.ValueAnimator;
import android.content.Context;
import android.graphics.ColorMatrix;
import android.service.notification.StatusBarNotification;
import android.view.NotificationHeaderView;
import android.view.View;

import com.android.systemui.Interpolators;
import com.android.systemui.statusbar.CrossFadeHelper;
import com.android.systemui.statusbar.ExpandableNotificationRow;
import com.android.systemui.statusbar.TransformableView;
import com.android.systemui.statusbar.phone.NotificationPanelView;

/**
 * Wraps the actual notification content view; used to implement behaviors which are different for
 * the individual templates and custom views.
 */
public abstract class NotificationViewWrapper implements TransformableView {

    protected final ColorMatrix mGrayscaleColorMatrix = new ColorMatrix();
    protected final View mView;
    protected final ExpandableNotificationRow mRow;
    protected boolean mDark;
    protected boolean mDarkInitialized = false;

    public static NotificationViewWrapper wrap(Context ctx, View v, ExpandableNotificationRow row) {
        if (v.getId() == com.android.internal.R.id.status_bar_latest_event_content) {
            if ("bigPicture".equals(v.getTag())) {
                return new NotificationBigPictureTemplateViewWrapper(ctx, v, row);
            } else if ("bigText".equals(v.getTag())) {
                return new NotificationBigTextTemplateViewWrapper(ctx, v, row);
            } else if ("media".equals(v.getTag()) || "bigMediaNarrow".equals(v.getTag())) {
                return new NotificationMediaTemplateViewWrapper(ctx, v, row);
            } else if ("messaging".equals(v.getTag())) {
                return new NotificationMessagingTemplateViewWrapper(ctx, v, row);
            }
            return new NotificationTemplateViewWrapper(ctx, v, row);
        } else if (v instanceof NotificationHeaderView) {
            return new NotificationHeaderViewWrapper(ctx, v, row);
        } else {
            return new NotificationCustomViewWrapper(v, row);
        }
    }

    protected NotificationViewWrapper(View view, ExpandableNotificationRow row) {
        mView = view;
        mRow = row;
    }

    /**
     * In dark mode, we draw as little as possible, assuming a black background.
     *
     * @param dark whether we should display ourselves in dark mode
     * @param fade whether to animate the transition if the mode changes
     * @param delay if fading, the delay of the animation
     */
    public void setDark(boolean dark, boolean fade, long delay) {
        mDark = dark;
        mDarkInitialized = true;
    }

    /**
     * Notifies this wrapper that the content of the view might have changed.
     * @param notification
     */
    public void notifyContentUpdated(StatusBarNotification notification) {
        mDarkInitialized = false;
    };


    protected void startIntensityAnimation(ValueAnimator.AnimatorUpdateListener updateListener,
            boolean dark, long delay, Animator.AnimatorListener listener) {
        float startIntensity = dark ? 0f : 1f;
        float endIntensity = dark ? 1f : 0f;
        ValueAnimator animator = ValueAnimator.ofFloat(startIntensity, endIntensity);
        animator.addUpdateListener(updateListener);
        animator.setDuration(NotificationPanelView.DOZE_ANIMATION_DURATION);
        animator.setInterpolator(Interpolators.LINEAR_OUT_SLOW_IN);
        animator.setStartDelay(delay);
        if (listener != null) {
            animator.addListener(listener);
        }
        animator.start();
    }

    protected void updateGrayscaleMatrix(float intensity) {
        mGrayscaleColorMatrix.setSaturation(1 - intensity);
    }

    /**
     * Update the appearance of the expand button.
     *
     * @param expandable should this view be expandable
     * @param onClickListener the listener to invoke when the expand affordance is clicked on
     */
    public void updateExpandability(boolean expandable, View.OnClickListener onClickListener) {}

    /**
     * @return the notification header if it exists
     */
    public NotificationHeaderView getNotificationHeader() {
        return null;
    }

    @Override
    public TransformState getCurrentState(int fadingView) {
        return null;
    }

    @Override
    public void transformTo(TransformableView notification, Runnable endRunnable) {
        // By default we are fading out completely
        CrossFadeHelper.fadeOut(mView, endRunnable);
    }

    @Override
    public void transformTo(TransformableView notification, float transformationAmount) {
        CrossFadeHelper.fadeOut(mView, transformationAmount);
    }

    @Override
    public void transformFrom(TransformableView notification) {
        // By default we are fading in completely
        CrossFadeHelper.fadeIn(mView);
    }

    @Override
    public void transformFrom(TransformableView notification, float transformationAmount) {
        CrossFadeHelper.fadeIn(mView, transformationAmount);
    }

    @Override
    public void setVisible(boolean visible) {
        mView.animate().cancel();
        mView.setVisibility(visible ? View.VISIBLE : View.INVISIBLE);
    }

    public int getCustomBackgroundColor() {
        return 0;
    }

    public void setShowingLegacyBackground(boolean showing) {
    }

    public void setContentHeight(int contentHeight, int minHeightHint) {
    }
}