v4/donut/android/support/v4/view/ViewCompatBase.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.v4.view;

import android.content.res.ColorStateList;
import android.graphics.PorterDuff;
import android.view.View;

class ViewCompatBase {

    static ColorStateList getBackgroundTintList(View view) {
        return (view instanceof TintableBackgroundView)
                ? ((TintableBackgroundView) view).getSupportBackgroundTintList()
                : null;
    }

    static void setBackgroundTintList(View view, ColorStateList tintList) {
        if (view instanceof TintableBackgroundView) {
            ((TintableBackgroundView) view).setSupportBackgroundTintList(tintList);
        }
    }

    static PorterDuff.Mode getBackgroundTintMode(View view) {
        return (view instanceof TintableBackgroundView)
                ? ((TintableBackgroundView) view).getSupportBackgroundTintMode()
                : null;
    }

    static void setBackgroundTintMode(View view, PorterDuff.Mode mode) {
        if (view instanceof TintableBackgroundView) {
            ((TintableBackgroundView) view).setSupportBackgroundTintMode(mode);
        }
    }

    static boolean isLaidOut(View view) {
        return view.getWidth() > 0 && view.getHeight() > 0;
    }
}