content: /*
   * Copyright (C) 2017 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 androidx.test.espresso.contrib;
  
  /*
   * Copyright 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.
   */
  
  import static androidx.test.espresso.matcher.ViewMatchers.isAssignableFrom;
  import static androidx.test.espresso.matcher.ViewMatchers.isDisplayingAtLeast;
  import static androidx.test.espresso.matcher.ViewMatchers.withEffectiveVisibility;
  import static org.hamcrest.Matchers.allOf;
  
  import android.content.res.Resources.NotFoundException;
  import android.view.Menu;
  import android.view.MenuItem;
  import android.view.View;
  import androidx.drawerlayout.widget.DrawerLayout;
  import androidx.test.espresso.PerformException;
  import androidx.test.espresso.UiController;
  import androidx.test.espresso.ViewAction;
  import androidx.test.espresso.matcher.ViewMatchers;
  import androidx.test.espresso.util.HumanReadables;
  import com.google.android.material.navigation.NavigationView;
  import org.hamcrest.Matcher;
  
  /** View actions for interacting with {@link NavigationView} */
  public final class NavigationViewActions {
  
    private NavigationViewActions() {
      // no Instance
    }
  
    /**
     * Returns a {@link ViewAction} that navigates to a menu item in {@link NavigationView} using a
     * menu item resource id.
     *
     * <p>View constraints:
     *
     * <ul>
     *   <li>View must be a child of a {@link DrawerLayout}
     *   <li>View must be of type {@link NavigationView}
     *   <li>View must be visible on screen
     *   <li>View must be displayed on screen
     *       <ul>
     *
     * @param menuItemId the resource id of the menu item
     * @return a {@link ViewAction} that navigates on a menu item
     */
    public static ViewAction navigateTo(final int menuItemId) {
  
      return new ViewAction() {
  
        @Override
        public void perform(UiController uiController, View view) {
          NavigationView navigationView = (NavigationView) view;
          Menu menu = navigationView.getMenu();
          if (null == menu.findItem(menuItemId)) {
            throw new PerformException.Builder()
                .withActionDescription(this.getDescription())
                .withViewDescription(HumanReadables.describe(view))
                .withCause(new RuntimeException(getErrorMessage(menu, view)))
                .build();
          }
          menu.performIdentifierAction(menuItemId, 0);
        }
  
        private String getErrorMessage(Menu menu, View view) {
          String newLine = System.getProperty("line.separator");
          StringBuilder errorMessage =
              new StringBuilder("Menu item was not found, " + "available menu items:")
                  .append(newLine);
          for (int position = 0; position < menu.size(); position++) {
            errorMessage.append("[MenuItem] position=").append(position);
            MenuItem menuItem = menu.getItem(position);
            if (menuItem != null) {
              CharSequence itemTitle = menuItem.getTitle();
              if (itemTitle != null) {
                errorMessage.append(", title=").append(itemTitle);
              }
              if (view.getResources() != null) {
                int itemId = menuItem.getItemId();
                try {
                  errorMessage.append(", id=");
                  String menuItemResourceName = view.getResources().getResourceName(itemId);
                  errorMessage.append(menuItemResourceName);
                } catch (NotFoundException nfe) {
                  errorMessage.append("not found");
                }
              }
              errorMessage.append(newLine);
            }
          }
          return errorMessage.toString();
        }
  
        @Override
        public String getDescription() {
          return "click on menu item with id";
        }
  
        @Override
        public Matcher<View> getConstraints() {
          return allOf(
              isAssignableFrom(NavigationView.class),
              withEffectiveVisibility(ViewMatchers.Visibility.VISIBLE),
              isDisplayingAtLeast(90));
        }
      };
    }
  }
  