material-components_material-components-android/tests/javatests/com/google/android/material/testutils/CollapsingToolbarLayoutActions.java

/*
 * Copyright (C) 2016 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.google.android.material.testutils;

import static androidx.test.espresso.matcher.ViewMatchers.isDisplayed;

import android.view.View;
import androidx.annotation.ColorInt;
import androidx.test.espresso.UiController;
import androidx.test.espresso.ViewAction;
import com.google.android.material.appbar.CollapsingToolbarLayout;
import org.hamcrest.Matcher;

public class CollapsingToolbarLayoutActions {

  public static ViewAction setContentScrimColor(@ColorInt final int color) {
    return new ViewAction() {
      @Override
      public Matcher<View> getConstraints() {
        return isDisplayed();
      }

      @Override
      public String getDescription() {
        return "Set the content scrim to a color";
      }

      @Override
      public void perform(UiController uiController, View view) {
        uiController.loopMainThreadUntilIdle();
        CollapsingToolbarLayout ctl = (CollapsingToolbarLayout) view;
        ctl.setContentScrimColor(color);
        uiController.loopMainThreadUntilIdle();
      }
    };
  }
}