v17/leanback/api21/android/support/v17/leanback/transition/TransitionHelperApi21.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 android.support.v17.leanback.transition;

import android.R;
import android.annotation.TargetApi;
import android.content.Context;
import android.graphics.Rect;
import android.support.annotation.RequiresApi;
import android.transition.ChangeTransform;
import android.transition.Transition;
import android.transition.TransitionManager;
import android.view.View;
import android.view.ViewGroup;
import android.view.Window;
import android.view.animation.AnimationUtils;

@RequiresApi(21)
@TargetApi(21)
final class TransitionHelperApi21 {

    TransitionHelperApi21() {
    }

    public static void setEnterTransition(android.app.Fragment fragment, Object transition) {
        fragment.setEnterTransition((Transition)transition);
    }

    public static void setExitTransition(android.app.Fragment fragment, Object transition) {
       fragment.setExitTransition((Transition)transition);
    }

    public static void setSharedElementEnterTransition(android.app.Fragment fragment,
            Object transition) {
        fragment.setSharedElementEnterTransition((Transition)transition);
     }

    public static void addSharedElement(android.app.FragmentTransaction ft,
            View view, String transitionName) {
        ft.addSharedElement(view, transitionName);
    }

    public static Object getSharedElementEnterTransition(Window window) {
        return window.getSharedElementEnterTransition();
    }

    public static Object getSharedElementReturnTransition(Window window) {
        return window.getSharedElementReturnTransition();
    }

    public static Object getSharedElementExitTransition(Window window) {
        return window.getSharedElementExitTransition();
    }

    public static Object getSharedElementReenterTransition(Window window) {
        return window.getSharedElementReenterTransition();
    }

    public static Object getEnterTransition(Window window) {
        return window.getEnterTransition();
    }

    public static Object getReturnTransition(Window window) {
        return window.getReturnTransition();
    }

    public static Object getExitTransition(Window window) {
        return window.getExitTransition();
    }

    public static Object getReenterTransition(Window window) {
        return window.getReenterTransition();
    }

    public static Object createScale() {
        return new ChangeTransform();
    }

    public static Object createDefaultInterpolator(Context context) {
        return AnimationUtils.loadInterpolator(context, R.interpolator.fast_out_linear_in);
    }

    public static Object createChangeTransform() {
        return new ChangeTransform();
    }

    public static Object createFadeAndShortSlide(int edge) {
        return new FadeAndShortSlide(edge);
    }

    public static Object createFadeAndShortSlide(int edge, float distance) {
        FadeAndShortSlide slide = new FadeAndShortSlide(edge);
        slide.setDistance(distance);
        return slide;
    }

    public static void beginDelayedTransition(ViewGroup sceneRoot, Object transitionObject) {
        Transition transition = (Transition) transitionObject;
        TransitionManager.beginDelayedTransition(sceneRoot, transition);
    }

    public static void setTransitionGroup(ViewGroup viewGroup, boolean transitionGroup) {
        viewGroup.setTransitionGroup(transitionGroup);
    }

    public static void setEpicenterCallback(Object transitionObject,
            final TransitionEpicenterCallback callback) {
        Transition transition = (Transition) transitionObject;
        if (callback == null) {
            transition.setEpicenterCallback(null);
        } else {
            transition.setEpicenterCallback(new Transition.EpicenterCallback() {
                @Override
                public Rect onGetEpicenter(Transition transition) {
                    return callback.onGetEpicenter(transition);
                }
            });
        }
    }
}