1 /* 2 * Copyright (C) 2013 DroidDriver committers 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 package io.appium.droiddriver.scroll; 17 18 import android.graphics.Rect; 19 20 import io.appium.droiddriver.DroidDriver; 21 import io.appium.droiddriver.UiElement; 22 import io.appium.droiddriver.finders.Finder; 23 import io.appium.droiddriver.instrumentation.InstrumentationDriver; 24 import io.appium.droiddriver.scroll.Direction.DirectionConverter; 25 import io.appium.droiddriver.scroll.Direction.PhysicalDirection; 26 27 /** 28 * Determines whether scrolling is possible by checking whether the last child 29 * in the logical scroll direction is fully visible. This assumes the count of 30 * children is static, and {@link UiElement#getChildren} includes all children 31 * no matter if it is visible. Currently {@link InstrumentationDriver} behaves 32 * this way. 33 * <p> 34 * This does not work if a child is larger than the physical size of the 35 * container. 36 */ 37 public class StaticSentinelStrategy extends SentinelStrategy { 38 /** 39 * Defaults to FIRST_CHILD_GETTER for backward scrolling, LAST_CHILD_GETTER 40 * for forward scrolling, and the standard {@link DirectionConverter}. 41 */ 42 public static final StaticSentinelStrategy DEFAULT = new StaticSentinelStrategy( 43 FIRST_CHILD_GETTER, LAST_CHILD_GETTER, DirectionConverter.STANDARD_CONVERTER); 44 45 public StaticSentinelStrategy(Getter backwardGetter, Getter forwardGetter, 46 DirectionConverter directionConverter) { 47 super(backwardGetter, forwardGetter, directionConverter); 48 } 49 50 @Override 51 public boolean scroll(DroidDriver driver, Finder containerFinder, PhysicalDirection direction) { 52 UiElement sentinel = getSentinel(driver, containerFinder, direction); 53 UiElement container = sentinel.getParent(); 54 // If the last child in the logical scroll direction is fully visible, no 55 // more scrolling is possible 56 Rect visibleBounds = container.getVisibleBounds(); 57 if (visibleBounds.contains(sentinel.getBounds())) { 58 return false; 59 } 60 61 doScroll(container, direction); 62 return true; 63 } 64 } 65
