| /* |
| * Copyright (C) 2013 DroidDriver committers |
| * |
| * 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 io.appium.droiddriver.scroll; |
| |
| import android.graphics.Rect; |
| |
| import io.appium.droiddriver.DroidDriver; |
| import io.appium.droiddriver.UiElement; |
| import io.appium.droiddriver.finders.Finder; |
| import io.appium.droiddriver.instrumentation.InstrumentationDriver; |
| import io.appium.droiddriver.scroll.Direction.DirectionConverter; |
| import io.appium.droiddriver.scroll.Direction.PhysicalDirection; |
| |
| /** |
| * Determines whether scrolling is possible by checking whether the last child |
| * in the logical scroll direction is fully visible. This assumes the count of |
| * children is static, and {@link UiElement#getChildren} includes all children |
| * no matter if it is visible. Currently {@link InstrumentationDriver} behaves |
| * this way. |
| * <p> |
| * This does not work if a child is larger than the physical size of the |
| * container. |
| */ |
| public class StaticSentinelStrategy extends SentinelStrategy { |
| /** |
| * Defaults to FIRST_CHILD_GETTER for backward scrolling, LAST_CHILD_GETTER |
| * for forward scrolling, and the standard {@link DirectionConverter}. |
| */ |
| public static final StaticSentinelStrategy DEFAULT = new StaticSentinelStrategy( |
| FIRST_CHILD_GETTER, LAST_CHILD_GETTER, DirectionConverter.STANDARD_CONVERTER); |
| |
| public StaticSentinelStrategy(Getter backwardGetter, Getter forwardGetter, |
| DirectionConverter directionConverter) { |
| super(backwardGetter, forwardGetter, directionConverter); |
| } |
| |
| @Override |
| public boolean scroll(DroidDriver driver, Finder containerFinder, PhysicalDirection direction) { |
| UiElement sentinel = getSentinel(driver, containerFinder, direction); |
| UiElement container = sentinel.getParent(); |
| // If the last child in the logical scroll direction is fully visible, no |
| // more scrolling is possible |
| Rect visibleBounds = container.getVisibleBounds(); |
| if (visibleBounds.contains(sentinel.getBounds())) { |
| return false; |
| } |
| |
| doScroll(container, direction); |
| return true; |
| } |
| } |