package com.supaur.baseactivity.swipeback;

import android.app.Activity;
import android.app.ActivityOptions;
import android.graphics.Color;
import android.graphics.drawable.ColorDrawable;
import android.os.Build;
import android.view.LayoutInflater;
import android.view.View;
import com.supaur.baseactivity.R;
import java.lang.reflect.Method;




public class SwipeBackActivityHelper {
    private Activity mActivity;

    private SwipeBackLayout mSwipeBackLayout;

    public SwipeBackActivityHelper(Activity activity) {
        mActivity = activity;
    }

    public void onActivityCreate() {
        mActivity.getWindow().setBackgroundDrawable(new ColorDrawable(Color.TRANSPARENT));
        mActivity.getWindow().getDecorView().setBackgroundDrawable(null);
        mSwipeBackLayout = (SwipeBackLayout) LayoutInflater.from(mActivity).inflate(
                R.layout.swipeback_layout, null);
    }

    public void onPostCreate() {
        mSwipeBackLayout.attachToActivity(mActivity);
    }

    public View findViewById(int id) {
        if (mSwipeBackLayout != null) {
            return mSwipeBackLayout.findViewById(id);
        }
        return null;
    }

    public SwipeBackLayout getSwipeBackLayout() {
        return mSwipeBackLayout;
    }


    /**
     * Convert a translucent themed Activity
     * {@link android.R.attr#windowIsTranslucent} to a fullscreen opaque
     * Activity.
     * <p>
     * Call this whenever the background of a translucent Activity has changed
     * to become opaque. Doing so will allow the {@link android.view.Surface} of
     * the Activity behind to be released.
     * <p>
     * This call has no effect on non-translucent activities or on activities
     * with the {@link android.R.attr#windowIsFloating} attribute.
     */
    public static void convertActivityFromTranslucent(Activity activity) {
        try {
            Method method = Activity.class.getDeclaredMethod("convertFromTranslucent");
            method.setAccessible(true);
            method.invoke(activity);
        } catch (Throwable t) {
        }
    }

    /**
     * Convert a translucent themed Activity
     * {@link android.R.attr#windowIsTranslucent} back from opaque to
     * translucent following a call to
     * {@link #convertActivityFromTranslucent(Activity)} .
     * <p>
     * Calling this allows the Activity behind this one to be seen again. Once
     * all such Activities have been redrawn
     * <p>
     * This call has no effect on non-translucent activities or on activities
     * with the {@link android.R.attr#windowIsFloating} attribute.
     */
    public static void convertActivityToTranslucent(Activity activity) {
        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.LOLLIPOP) {
            convertActivityToTranslucentAfterL(activity);
        } else {
            convertActivityToTranslucentBeforeL(activity);
        }
    }

    /**
     * Calling the convertToTranslucent method on platforms before Android 5.0
     */
    public static void convertActivityToTranslucentBeforeL(Activity activity) {
        try {
            Class<?>[] classes = Activity.class.getDeclaredClasses();
            Class<?> translucentConversionListenerClazz = null;
            for (Class clazz : classes) {
                if (clazz.getSimpleName().contains("TranslucentConversionListener")) {
                    translucentConversionListenerClazz = clazz;
                }
            }
            Method method = Activity.class.getDeclaredMethod("convertToTranslucent",
                    translucentConversionListenerClazz);
            method.setAccessible(true);
            method.invoke(activity, new Object[] {
                    null
            });
        } catch (Throwable t) {
        }
    }

    /**
     * Calling the convertToTranslucent method on platforms after Android 5.0
     */
    private static void convertActivityToTranslucentAfterL(Activity activity) {
        try {
            Method getActivityOptions = Activity.class.getDeclaredMethod("getActivityOptions");
            getActivityOptions.setAccessible(true);
            Object options = getActivityOptions.invoke(activity);

            Class<?>[] classes = Activity.class.getDeclaredClasses();
            Class<?> translucentConversionListenerClazz = null;
            for (Class clazz : classes) {
                if (clazz.getSimpleName().contains("TranslucentConversionListener")) {
                    translucentConversionListenerClazz = clazz;
                }
            }
            Method convertToTranslucent = Activity.class.getDeclaredMethod("convertToTranslucent",
                    translucentConversionListenerClazz, ActivityOptions.class);
            convertToTranslucent.setAccessible(true);
            convertToTranslucent.invoke(activity, null, options);
        } catch (Throwable t) {
        }
    }

}
